/* ===============================
   UI-003: Theme & Styling System - UTILITY CLASSES
================================ */
.hidden {
  display: none !important;
}

/* ===============================
   UI-003: Theme & Styling System - THEME VARIABLES
================================ */
:root {
  --bg-dark: #0f172a;
  --bg-panel: #1e293b;
  --bg-card: #111827;
  --text-light: #e5e7eb;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-2: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #334155;
  --radius: 12px;
}

/* ===============================
   UI-003: Theme & Styling System - GLOBAL
================================ */
/* Support for mobile viewport units */
:root {
  /* Define CSS custom properties for dynamic viewport */
  --vh: 1vh;
}

body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  /* Use dynamic viewport height for mobile browsers */
  height: calc(var(--vh, 1vh) * 100);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* Prevent pull-to-refresh on mobile */
  overscroll-behavior: none;
  /* Disable text size adjust */
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

/* ===============================
   UI-003: Theme & Styling System - MODERN TYPOGRAPHY
================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin: 0 0 1rem 0;
}

h1 {
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.1;
}

h2 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h3 {
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

p {
  line-height: 1.6;
  font-weight: 400;
}

/* ===============================
   UI-003: Theme & Styling System - APP LAYOUT
================================ */
#app {
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: 60px 1fr;
  grid-template-areas:
    "navbar navbar"
    "sidebar content";
  height: 100vh;
  /* Use dynamic viewport height for mobile browsers */
  height: calc(var(--vh, 1vh) * 100);
  /* Prevent overflow issues on mobile */
  overflow: hidden;
}

/* ===============================
   UI-003: Theme & Styling System - MODERN NAVBAR
================================ */
.navbar { 
  grid-area: navbar; 
  background: linear-gradient(135deg, var(--bg-panel) 0%, rgba(30, 41, 59, 0.95) 100%);
  backdrop-filter: blur(10px);
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  padding: 0 2rem; 
  border-bottom: 1px solid rgba(51, 65, 85, 0.3);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo svg {
  transition: transform 0.3s ease;
}

.logo:hover svg {
  transform: scale(1.1);
}

.brand-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mode-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.mode-indicator:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.mode-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

.mode-indicator.demo .mode-dot {
  background: var(--accent);
}

.mode-text {
  color: var(--text-light);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  transition: all 0.3s ease;
  cursor: pointer;
  user-select: none;
}

.user-info:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  border-color: var(--accent);
}

.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
  color: white;
  flex-shrink: 0;
}

.user-details {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.user-name {
  font-weight: 600;
  color: var(--text-light);
  font-size: 0.875rem;
}

.user-role {
  font-size: 0.7rem;
  color: var(--accent);
  font-family: 'Courier New', monospace;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: rgba(59, 130, 246, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(135deg, var(--danger), #dc2626);
  border: none;
  border-radius: 12px;
  color: white;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.logout-btn:hover {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.4);
}

.logout-btn:active {
  transform: translateY(0);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===============================
   UI-003: Theme & Styling System - MODERN SIDEBAR
================================ */
.sidebar { 
  grid-area: sidebar; 
  background: linear-gradient(180deg, var(--bg-panel) 0%, rgba(15, 23, 42, 0.95) 100%);
  backdrop-filter: blur(10px);
  border-right: 1px solid rgba(51, 65, 85, 0.3);
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 50;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.3);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.3s ease;
}

.sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-light);
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-menu li {
  margin: 0;
}

.nav-menu button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 0;
  position: relative;
  overflow: hidden;
}

.nav-menu button::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.nav-menu button:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-light);
  padding-left: 2rem;
}

.nav-menu button:hover::before {
  transform: scaleY(1);
}

.nav-menu button.active {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.15), transparent);
  color: var(--accent);
  font-weight: 600;
}

.nav-menu button.active::before {
  transform: scaleY(1);
}

.nav-menu button svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Mobile Responsive - Enhanced for Touch Devices */
@media (max-width: 768px) {
  #app {
    grid-template-columns: 1fr;
    grid-template-rows: 60px 1fr;
    grid-template-areas:
      "navbar"
      "content";
  }
  
  .navbar {
    padding: 0 1rem;
    /* Ensure navbar stays above sidebar */
    z-index: 300;
    position: relative;
  }
  
  .navbar-brand {
    gap: 1rem;
  }
  
  .brand-text {
    display: none;
  }
  
  .mode-indicator .mode-text {
    display: none;
  }
  
  .user-details {
    display: none;
  }
  
  .sidebar-toggle {
    display: flex;
    /* Larger touch target for mobile */
    min-width: 44px;
    min-height: 44px;
    padding: 8px;
  }
  
  .sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    width: 280px;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
    /* Add backdrop blur for modern effect */
    backdrop-filter: blur(10px);
  }
  
  .sidebar.open {
    left: 0;
    /* Add shadow when open */
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
  }
  
  /* Add overlay for mobile sidebar */
  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 150;
  }
  
  .sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
  }
  
  /* Improved touch targets for navigation */
  .nav-menu button {
    padding: 1rem 1.5rem;
    min-height: 48px;
    font-size: 1rem;
  }
  
  /* Better spacing for mobile content */
  #content {
    padding: 1rem;
    /* Account for mobile keyboards - use dynamic viewport */
    min-height: calc(var(--vh, 1vh) * 100 - 60px);
    height: calc(var(--vh, 1vh) * 100 - 60px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* Enhanced Mobile Phone Styles */
@media (max-width: 480px) {
  /* Fix app height for mobile browsers */
  #app {
    height: calc(var(--vh, 1vh) * 100);
    min-height: 100vh;
    min-height: calc(var(--vh, 1vh) * 100);
  }
  
  .navbar {
    padding: 0 0.75rem;
    /* Fixed height to prevent layout shifts */
    height: 60px;
    flex-shrink: 0;
  }
  
  .navbar-brand .brand-logo {
    width: 28px;
    height: 28px;
  }
  
  .sidebar {
    width: 100vw;
    left: -100vw;
    /* Use dynamic viewport height */
    height: calc(var(--vh, 1vh) * 100);
  }
  
  .sidebar.open {
    left: 0;
  }
  
  #content {
    padding: 0.75rem;
    /* Dynamic height calculation */
    height: calc(var(--vh, 1vh) * 100 - 60px);
    min-height: calc(var(--vh, 1vh) * 100 - 60px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  /* Larger touch targets for small screens */
  .btn-primary, .btn-secondary, .btn-danger {
    min-height: 44px;
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
  }
  
  /* Better form inputs for mobile */
  input, select, textarea {
    min-height: 44px;
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-light);
  }
  
  /* Fix login screen for mobile */
  #login-screen {
    height: calc(var(--vh, 1vh) * 100);
    min-height: calc(var(--vh, 1vh) * 100);
  }
}

/* Tablet Specific Optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
  .navbar {
    padding: 0 1.5rem;
  }
  
  /* Slightly larger touch targets for tablet */
  .btn-primary, .btn-secondary, .btn-danger {
    min-height: 42px;
    padding: 0.75rem 1.5rem;
  }
  
  /* Better spacing for tablet content */
  #content {
    padding: 1.25rem;
  }
  
  /* Optimize cards for tablet */
  .card {
    padding: 1.5rem;
  }
  
  /* Better table responsiveness for tablets */
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  /* Form inputs sized for tablet touch */
  input, select, textarea {
    min-height: 42px;
    padding: 0.75rem;
    font-size: 1rem;
  }
}

/* Enhanced Table Responsiveness for All Mobile Devices */
@media (max-width: 1024px) {
  .table-responsive {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .table-responsive table {
    white-space: nowrap;
  }
  
  /* Stack table data vertically on small screens */
  @media (max-width: 600px) {
    .table-responsive table,
    .table-responsive thead,
    .table-responsive tbody,
    .table-responsive th,
    .table-responsive td,
    .table-responsive tr {
      display: block;
    }
    
    .table-responsive thead tr {
      position: absolute;
      top: -9999px;
      left: -9999px;
    }
    
    .table-responsive tr {
      border: 1px solid var(--border);
      border-radius: 8px;
      margin-bottom: 1rem;
      padding: 1rem;
    }
    
    .table-responsive td {
      border: none;
      position: relative;
      padding: 0.75rem 0 0.75rem 35%;
      text-align: left;
    }
    
    .table-responsive td:before {
      content: attr(data-label);
      position: absolute;
      left: 0;
      width: 30%;
      font-weight: 600;
      color: var(--text-muted);
      text-align: left;
    }
  }
}

/* Improved Modal Responsiveness */
@media (max-width: 768px) {
  .modal-content {
    width: 95vw;
    max-width: 95vw;
    margin: 2rem auto;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
  }
  
  /* Larger close button for touch */
  .modal-close {
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
  }
}

/* Touch-Friendly Buttons and Interactive Elements */
@media (max-width: 1024px) {
  /* Ensure all clickable elements meet touch target guidelines */
  button, .btn, input[type="button"], input[type="submit"], 
  input[type="reset"], .clickable, .nav-menu button {
    min-width: 44px;
    min-height: 44px;
  }
  
  /* Better spacing between touch targets */
  .btn-group button:not(:last-child) {
    margin-right: 0.5rem;
  }
  
  /* Larger checkbox and radio inputs */
  input[type="checkbox"], input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
  }
  
  /* Touch-friendly dropdown menus */
  select {
    min-height: 44px;
    padding: 0.75rem;
    font-size: 1rem;
    cursor: pointer;
  }
  
  /* Better touch targets for icons */
  .icon-btn {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

#content { 
  grid-area: content; 
  padding:1.5rem; 
  overflow-y:auto; 
}

/* ===============================
   UI-003: Theme & Styling System - BUTTONS
================================ */
.btn-primary {
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  padding: 0.6rem 1.2rem;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--accent-2); }

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  color: var(--text-light);
  cursor: pointer;
  transition: background 0.2s;
}
.btn-secondary:hover { background: var(--border); }

.btn-danger {
  background: var(--danger);
  border: none;
  border-radius: var(--radius);
  padding: 0.5rem 1rem;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-danger:hover { background: #dc2626; }

.icon-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  transition: transform 0.2s, opacity 0.2s, background-color 0.2s;
  padding: 6px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.icon-btn:hover { 
  transform: scale(1.1); 
  opacity: 1;
}
.icon-btn.edit { 
  color: var(--accent); 
}
.icon-btn.edit:hover {
  background-color: rgba(59, 130, 246, 0.1);
}
.icon-btn.delete { 
  color: var(--danger); 
}
.icon-btn.delete:hover {
  background-color: rgba(239, 68, 68, 0.1);
}
.icon-btn svg {
  display: block;
}

/* ===============================
   UI-003: Theme & Styling System - LOGIN
================================ */
#login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.login-box {
  background: var(--bg-panel);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 6px 16px rgba(0,0,0,0.6);
  text-align: center;
  width: 380px;
  min-width: 320px;
  max-width: 90vw;
  box-sizing: border-box;
}

.login-box form {
  width: 100%;
}

/* Ensure all login box children take full width */
#school-id-container,
#cached-school-display,
#twofa-screen {
  width: 100%;
  box-sizing: border-box;
}

#cached-school-display > div {
  width: 100%;
  box-sizing: border-box;
}

.login-header {
  margin-bottom: 2rem;
}

.login-header h1 {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--accent);
  margin: 0 0 0.5rem 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  letter-spacing: -0.05em;
  line-height: 1.1;
}

.login-slogan {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin: 0;
  font-style: italic;
  font-weight: 400;
  opacity: 0.9;
  letter-spacing: 0.01em;
  line-height: 1.2;
  white-space: nowrap;
}
#login-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.login-box input {
  width: 100%;
  max-width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-light);
  text-align: left;
  box-sizing: border-box;
}
.login-box input:focus { 
  outline: 1px solid var(--accent); 
}

.login-box .btn-primary {
  width: 100%;
  max-width: 100%;
  margin-top: 0.5rem;
}

.login-footer {
  margin-top: 1.5rem;
  text-align: center;
}

.forgot-password-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.forgot-password-link:hover {
  color: #2563eb;
  text-decoration: underline;
}

/* ===============================
   UI-003: Theme & Styling System - ACADEMICS CONTENT
================================ */
.academics-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.academics-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.academics-section .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.academics-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
}

.academics-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* ===============================
   UI-003: Theme & Styling System - USER MANAGEMENT CONTENT
================================ */
.user-management-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.user-filters-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.user-filters-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.user-filters-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

.user-filters-section .search-input {
  padding: 0.5rem;
  width: 200px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.user-filters-section .filter-group {
  display: flex !important;
  flex-direction: row !important;
  gap: 0.5rem !important;
  align-items: center !important;
  width: 200px !important;
  background: none !important;
  border: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
}

.user-filters-section .filter-group .filter-select {
  padding: 0.4rem 0.6rem !important;
  border-radius: 6px !important;
  border: 1px solid var(--border) !important;
  background: var(--bg-card) !important;
  color: var(--text-light) !important;
  font-size: 0.85rem !important;
  flex: 1 !important;
  min-width: 0 !important;
  width: auto !important;
  margin: 0 !important;
}

.filters {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.25rem;
}

.filter-group .filter-select {
  border: none;
  background: transparent;
  margin: 0;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: background-color 0.2s;
}

.filter-group .filter-select:hover {
  background: var(--bg-card);
}

.filter-group .filter-select:focus {
  background: var(--bg-card);
  outline: 1px solid var(--accent);
}

.search-input {
  padding: 0.5rem;
  width: 200px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
}

.filter-select {
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
  min-width: 120px;
}

.users-display-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.users-display-section .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.users-display-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
}

.users-display-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

.pagination {
  margin-top: 1rem;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ===============================
   UI-003: Theme & Styling System - LOGS CONTENT
================================ */
.logs-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.logs-filters-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.logs-filters-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.logs-filters-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

.logs-filters {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.logs-filters .filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 120px;
}

.logs-filters .filter-group label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.logs-filters .filter-group .filter-select {
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
}

.logs-filters .filter-group .btn-secondary {
  margin-top: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.logs-display-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.logs-pagination {
  margin-top: 1rem;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.message-pagination {
  margin-top: 1rem;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.message-pagination .pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

/* ===============================
   UI-003: Theme & Styling System - SETTINGS CONTENT
================================ */
.settings-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.settings-content .settings-grid {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.settings-content .settings-actions {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

/* ===============================
   UI-003: Theme & Styling System - ANALYTICS CONTENT
================================ */
.analytics-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.analytics-filters-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.analytics-filters-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.analytics-filters-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

.analytics-filters-section .filters {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.analytics-filters-section .filter-group {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.25rem;
}

.analytics-filters-section .filter-group .filter-select {
  border: none;
  background: transparent;
  margin: 0;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  transition: background-color 0.2s;
}

.analytics-filters-section .filter-group .filter-select:hover {
  background: var(--bg-card);
}

.analytics-filters-section .filter-group .filter-select:focus {
  background: var(--bg-card);
  outline: 1px solid var(--accent);
}

.analytics-filters-section .search-input {
  padding: 0.5rem;
  width: 200px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
}

.analytics-filters-section .filter-select {
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  font-size: 0.9rem;
  min-width: 120px;
}

.analytics-charts-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* ===============================
   UI-003: Theme & Styling System - MESSAGE CENTER CONTENT
================================ */
.message-center-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.message-controls-row {
  display: grid;
  grid-template-columns: auto auto;
  gap: 1rem;
  margin-bottom: 1.5rem;
  justify-content: start;
}

@media (max-width: 768px) {
  .message-controls-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.message-filters-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  max-width: 400px;
  width: fit-content;
}

.message-filters-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem 0;
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 600;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.message-filters-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.message-filters-section .filter-group {
  display: flex !important;
  flex-direction: row !important;
  gap: 0.5rem !important;
  align-items: center !important;
  width: 100% !important;
  background: none !important;
  border: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
}

.message-filters-section .filter-group select {
  padding: 0.4rem 0.6rem !important;
  border-radius: 6px !important;
  border: 1px solid var(--border) !important;
  background: var(--bg-card) !important;
  color: var(--text-light) !important;
  font-size: 0.85rem !important;
  flex: 1 !important;
  min-width: 0 !important;
  width: auto !important;
  margin: 0 !important;
}

.message-summary-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  max-width: 250px;
  width: fit-content;
}

.message-summary-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem 0;
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 600;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.message-summary-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.message-summary {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.summary-item {
  padding: 0.4rem 0.8rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.9rem;
}

.message-display-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.message-display-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.message-display-section h3 svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* ===============================
   UI-003: Theme & Styling System - MODE INDICATOR
================================ */
.mode-indicator {
  font-weight: bold;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.mode-indicator.demo { background: var(--accent); color: white; }
.mode-indicator.production { background: var(--success); color: white; }

/* ===============================
   UI-003: Theme & Styling System - GRADEBOOK (Modern + Clean)
================================ */
.gradebook-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  text-align: center;
  margin-top: 1rem;
  overflow: hidden;
}

.gradebook-table th,
.gradebook-table td {
  border: 1px solid var(--border);
  padding: 0.6rem;
  text-align: center;
  vertical-align: middle;
}

.gradebook-table th {
  background: var(--bg-panel);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 2;
}

.gradebook-table .student-col {
  text-align: left;
  font-weight: 600;
  background: var(--bg-panel);
  position: sticky;
  left: 0;
  z-index: 3;
}

/* Week Header */
.week-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.week-label {
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}
.week-header input[type="date"] {
  font-size: 0.75rem;
  padding: 2px 4px;
  width: 80px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-light);
}
.week-header .delete-btn {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.8rem;
  transition: transform 0.2s;
}
.week-header .delete-btn:hover { transform: scale(1.2); }

/* Grade input aligned with week */
.grade-input {
  width: 80px;
  text-align: center;
  padding: 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-dark);
  color: var(--text-light);
}
.grade-input:focus { border-color: var(--accent); outline: none; }

/* Average + Letter */
.gradebook-table td.average,
.gradebook-table td.letter {
  font-weight: 600;
  text-align: center;
}

/* Row striping */
.gradebook-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.03);
}
.gradebook-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.1);
  cursor: pointer;
}

/* ===============================
   UI-003: Theme & Styling System - ASSIGNMENTS (Unchanged)
================================ */
.assignments-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.assignments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.school-years-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(500px, 1fr));
  gap: 1rem;
}

/* ===============================
   CLICKABLE USER ELEMENTS
=============================== */

.clickable-user-card {
  cursor: pointer !important;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  position: relative;
}

.clickable-user-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border-color: var(--primary);
  background-color: var(--bg-secondary);
}

/* Ensure icons inside clickable cards don't get affected by transforms */
.clickable-user-card:hover svg,
.clickable-user-card:hover .user-avatar,
.clickable-user-card:hover .status-badge {
  transform: none !important;
}

.clickable-user-row {
  cursor: pointer !important;
  transition: all 0.3s ease;
}

.clickable-user-row:hover {
  background-color: var(--bg-secondary) !important;
  /* Removed transform: scale(1.01) to prevent affecting navbar */
}

/* Ensure icons inside clickable rows don't get affected by transforms */
.clickable-user-row:hover svg,
.clickable-user-row:hover .user-avatar,
.clickable-user-row:hover .status-badge {
  transform: none !important;
}

/* Navbar avatar - simple and clean */
.navbar-actions .user-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  flex-shrink: 0;
}

.navbar-actions .user-avatar:hover {
  transform: scale(1.05);
}

/* User dropdown menu */
.navbar-actions .user-avatar .user-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  z-index: 1000;
  min-width: 200px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.navbar-actions .user-avatar .user-dropdown.show {
  display: block;
  animation: dropdownSlide 0.2s ease-out;
}

@keyframes dropdownSlide {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Dropdown items */
.navbar-actions .user-avatar .dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--text-light);
  cursor: pointer;
  transition: background-color 0.2s ease;
  font-size: 0.9rem;
}

.navbar-actions .user-avatar .dropdown-item:hover {
  background: var(--bg-panel);
}

.navbar-actions .user-avatar .dropdown-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* User ID item (non-clickable) */
.navbar-actions .user-avatar .user-id-item {
  cursor: default;
  font-weight: 500;
  color: var(--text-primary);
}

.navbar-actions .user-avatar .user-id-item:hover {
  background: transparent;
}

/* Logout item */
.navbar-actions .user-avatar .logout-item {
  color: var(--danger);
}

.navbar-actions .user-avatar .logout-item:hover {
  background: rgba(231, 76, 60, 0.1);
  color: var(--danger);
}

.navbar-actions .user-avatar .logout-item svg {
  color: var(--danger);
}

/* Dropdown divider */
.navbar-actions .user-avatar .dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 0.25rem 0;
}

/* Ensure navbar avatar SVG is also protected */
.navbar-actions .user-avatar svg {
  width: 18px !important;
  height: 18px !important;
  transform: none !important;
  transition: none !important;
}
.assignment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.assignment-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
}
.assignment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.assignment-actions { display: flex; gap: 6px; }
.assignment-meta { margin: 0.5rem 0; }
.assignment-due-date { 
  font-size: 0.9rem; 
  color: var(--accent); 
  font-weight: 500;
  margin: 0;
}
.assignment-desc { font-size: 0.85rem; color: var(--text-muted); }

.upload-block {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  width: 100%;
}
.upload-block input[type="file"] {
  flex: 0 1 auto;
  max-width: 200px;
  padding: 0.3rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-light);
  font-size: 0.8rem;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
}
.upload-block button {
  flex-shrink: 0;
  padding: 0.4rem 0.8rem;
  font-size: 1.2rem;
}

.submission-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.85rem;
}
.submission-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
.submission-list li strong { color: var(--success); }
.submission-list li .muted { font-size: 0.75rem; color: var(--text-muted); }

.submission {
  margin-top: 0.5rem;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.04);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
}
.submission a {
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
}
.submission a:hover { text-decoration: underline; }
.submission small { color: var(--text-muted); font-size: 0.75rem; }
.submission .btn-danger { 
  flex-shrink: 0; 
  align-self: flex-end;
  margin-top: 0.3rem;
}

/* ===============================
   UI-003: Theme & Styling System - MODERN PREVIEW BUTTON
================================ */
.preview-btn {
  width: 32px !important;
  height: 32px !important;
  min-width: 32px !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: 8px !important;
  font-size: 14px !important;
  background: var(--bg-panel) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-light) !important;
  transition: all 0.2s ease !important;
  cursor: pointer !important;
}

.preview-btn:hover {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: white !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3) !important;
}

.preview-btn:active {
  transform: translateY(0) !important;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.2) !important;
}

.submission-file {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.submission-file p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-light);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.submission-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.submissions-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.no-submissions {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 1rem;
  background: rgba(255,255,255,0.02);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* Compact Submission Display with Grade Badge */
.submission-header-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.submission-grade-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.8rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--border);
}

.grade-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.grade-badge.graded {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--accent);
}

.grade-badge.pending {
  background: rgba(255, 193, 7, 0.05);
  border: 1px solid rgba(255, 193, 7, 0.3);
  color: #ffc107;
}

.grade-badge svg {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
}

.grade-badge span {
  font-weight: 500;
}

/* Grading Modal Styles */
.grading-modal-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}

.grading-modal-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.grading-modal-header .student-info h3 {
  margin: 0 0 0.3rem 0;
  color: var(--text-primary);
  font-size: 1.3rem;
}

.grading-modal-header .assignment-title {
  margin: 0;
  color: var(--text-light);
  font-size: 0.9rem;
}

.grading-modal-header .submission-info {
  margin-top: 0.5rem;
}

.grading-modal-header .submission-info small {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.grading-modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.submission-preview-section h4,
.grading-form-section h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.8rem 0;
  color: var(--text-light);
  font-size: 1rem;
  font-weight: 600;
}

.submission-preview-section h4 svg,
.grading-form-section h4 svg {
  width: 16px;
  height: 16px;
}

.file-preview-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.file-preview-box .file-name {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.grade-inputs-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.input-group label {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
}

.form-input {
  padding: 0.6rem 0.8rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  padding: 0.8rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s ease;
}

.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.previous-grade-info {
  margin-top: 0.5rem;
  text-align: right;
}

.previous-grade-info small {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-style: italic;
}

.grading-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* Student Grade Display Styles */
.student-grade-display {
  margin-top: 1rem;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(99, 102, 241, 0.05));
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius);
}

.student-grade-display .grade-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
  color: var(--accent);
}

.student-grade-display .grade-header svg {
  width: 16px;
  height: 16px;
}

.student-grade-display .grade-header h6 {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.grade-score-display {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.score-large {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.score-percentage {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  padding: 0.4rem 0.8rem;
  background: rgba(59, 130, 246, 0.15);
  border-radius: var(--radius);
}

.teacher-feedback-display {
  margin-top: 0.8rem;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.teacher-feedback-display strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-light);
}

.teacher-feedback-display p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.graded-date {
  margin-top: 0.5rem;
  text-align: right;
}

.graded-date small {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-style: italic;
}

.pending-grade-notice {
  margin-top: 1rem;
  padding: 0.8rem;
  background: rgba(255, 193, 7, 0.05);
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #ffc107;
}

.pending-grade-notice svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.pending-grade-notice span {
  font-size: 0.85rem;
  font-style: italic;
}

/* Compact Student Grade Display */
.student-grade-display-compact {
  margin-top: 0.8rem;
  padding: 0.8rem;
  background: rgba(59, 130, 246, 0.08);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.grade-score-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.6rem;
}

.grade-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
}

.grade-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

.teacher-feedback-compact {
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.feedback-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 0.3rem;
}

.feedback-text {
  font-size: 0.85rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.pending-grade-notice-compact {
  margin-top: 0.8rem;
  padding: 0.6rem;
  background: rgba(255, 193, 7, 0.05);
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #ffc107;
}

.pending-grade-notice-compact svg {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
}

.pending-grade-notice-compact span {
  font-size: 0.85rem;
}

/* ===============================
   UI-003: Theme & Styling System - MODERN LOGS INTERFACE
   Clean, sharp, and modern audit logs design
================================ */

/* Logs Container */
.logs-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

/* Logs Header */
.logs-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.logs-title h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logs-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.logs-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Export Button */
.btn-export {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-export:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn-export svg {
  width: 16px;
  height: 16px;
}

/* Logs Filters */
.logs-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.filter-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.btn-clear {
  padding: 0.75rem 1rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  align-self: flex-end;
}

.btn-clear:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

/* Logs Content - Removed conflicting styles */

.logs-table-container {
  min-height: 400px;
}

/* Log Cards */
.log-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  transition: all 0.2s ease;
  position: relative;
}

.log-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transform: translateY(-1px);
}

.log-card:last-child {
  margin-bottom: 0;
}

/* Log Header */
.log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
}

.log-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.log-action-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.log-action-badge.log-action-danger {
  background: rgba(231, 76, 60, 0.1);
  color: #e74c3c;
  border: 1px solid rgba(231, 76, 60, 0.2);
}

.log-action-badge.log-action-success {
  background: rgba(46, 204, 113, 0.1);
  color: #2ecc71;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.log-action-badge.log-action-warning {
  background: rgba(241, 196, 15, 0.1);
  color: #f1c40f;
  border: 1px solid rgba(241, 196, 15, 0.2);
}

.log-action-badge.log-action-info {
  background: rgba(52, 152, 219, 0.1);
  color: #3498db;
  border: 1px solid rgba(52, 152, 219, 0.2);
}

.log-action-badge.log-action-primary {
  background: rgba(155, 89, 182, 0.1);
  color: #9b59b6;
  border: 1px solid rgba(155, 89, 182, 0.2);
}

.log-action-badge.log-action-secondary {
  background: rgba(149, 165, 166, 0.1);
  color: #95a5a6;
  border: 1px solid rgba(149, 165, 166, 0.2);
}

.log-timestamp {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
}

.log-time {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.log-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Log Content */
.log-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.log-details {
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.log-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.user-role {
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.user-role.user-role-admin {
  background: rgba(231, 76, 60, 0.1);
  color: #e74c3c;
}

.user-role.user-role-teacher {
  background: rgba(52, 152, 219, 0.1);
  color: #3498db;
}

.user-role.user-role-student {
  background: rgba(46, 204, 113, 0.1);
  color: #2ecc71;
}

.log-category-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

.log-category-badge svg {
  color: var(--accent);
  flex-shrink: 0;
  width: 12px;
  height: 12px;
}

.log-category {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
}

.log-category svg {
  color: var(--accent);
  flex-shrink: 0;
}

.log-id {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Courier New', monospace;
  background: var(--bg-panel);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Event Context Modal */
.event-context-modal {
  max-width: 800px;
  max-height: 80vh;
  overflow-y: auto;
}

.event-context-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--border);
}

.event-context-header h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
}

.event-context-header svg {
  color: var(--accent);
}

.event-context-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.context-section {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

.context-section h4 {
  margin: 0 0 1rem 0;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.context-section h4::before {
  content: '';
  width: 4px;
  height: 16px;
  background: var(--accent);
  border-radius: 2px;
}

.context-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.context-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.context-item label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.context-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: 'Courier New', monospace;
  background: var(--bg-light);
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  word-break: break-all;
}

.context-value.success {
  color: var(--success);
  background: rgba(46, 204, 113, 0.1);
  border-color: var(--success);
}

.context-value.error {
  color: var(--error);
  background: rgba(231, 76, 60, 0.1);
  border-color: var(--error);
}

.context-value.info {
  color: var(--text-muted);
  background: rgba(108, 117, 125, 0.1);
  border-color: var(--text-muted);
}

/* Hover effect for clickable log cards */
.log-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
}

.log-card:hover .log-action-badge {
  transform: scale(1.02);
}

.log-card:hover .log-category-badge {
  transform: scale(1.02);
}

/* Mobile responsiveness for event context modal */
@media (max-width: 768px) {
  .event-context-modal {
    max-width: 95vw;
    max-height: 90vh;
  }
  
  .context-grid {
    grid-template-columns: 1fr;
  }
  
  .event-context-header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
}

/* Empty State */
.logs-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  text-align: center;
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.logs-empty h3 {
  margin: 0 0 0.5rem 0;
  color: var(--text-secondary);
  font-size: 1.25rem;
}

.logs-empty p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Pagination */
.logs-pagination {
  margin-top: 1rem;
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.logs-pagination .pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.pagination-info {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-pagination {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-pagination:hover:not(:disabled) {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-pagination:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-pages {
  display: flex;
  gap: 0.5rem;
}

.btn-page {
  width: 40px;
  height: 40px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-page:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.btn-page.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
  .logs-header {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  
  .logs-filters {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .log-header {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
  }
  
  .log-header-left {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
  
  .log-timestamp {
    align-items: flex-start;
    text-align: left;
  }
  
  .log-meta {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
  
  .logs-pagination {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .pagination-controls {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ===============================
   UI-004: Theme & Styling System - MODERN GRADEBOOK INTERFACE
   Clean, sharp, and modern gradebook design
================================ */

/* Gradebook Container */
.gradebook-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0;
}

/* Gradebook Header */
.gradebook-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.gradebook-title h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-light);
}

.gradebook-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

.gradebook-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* View Toggle */
.view-toggle {
  display: flex;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}

.view-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-btn:hover {
  background: var(--bg-card);
  color: var(--text-light);
}

.view-btn.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.view-btn svg {
  width: 16px;
  height: 16px;
}

/* Gradebook Content */
.gradebook-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  min-height: 400px;
}

.gradebook-classes {
  padding: 1.5rem;
}

/* Gradebook Cards */
.gradebook-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.gradebook-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.gradebook-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.gradebook-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* Card Header */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.card-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-light);
  flex: 1;
}

.card-status {
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-status.status-active {
  background: rgba(46, 204, 113, 0.1);
  color: #2ecc71;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.card-status.status-inactive {
  background: rgba(149, 165, 166, 0.1);
  color: #95a5a6;
  border: 1px solid rgba(149, 165, 166, 0.2);
}

/* Card Content */
.card-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.class-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.info-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1rem;
  background: var(--bg-panel);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.info-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.info-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.info-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-light);
}

/* Card Actions */
.card-actions {
  display: flex;
  justify-content: center;
}

.btn-view {
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-view:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Gradebook Table */
.gradebook-table-container {
  overflow-x: auto;
}

.gradebook-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
}

.gradebook-table th {
  background: var(--bg-panel);
  color: var(--text-light);
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  border-bottom: 2px solid var(--border);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.gradebook-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.gradebook-table tbody tr {
  cursor: pointer;
  transition: all 0.2s ease;
}

.gradebook-table tbody tr:hover {
  background: var(--bg-panel);
}

.class-name strong {
  display: block;
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.class-name small {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.status-active {
  background: rgba(46, 204, 113, 0.1);
  color: #2ecc71;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.status-badge.status-inactive {
  background: rgba(149, 165, 166, 0.1);
  color: #95a5a6;
  border: 1px solid rgba(149, 165, 166, 0.2);
}

.status-badge.submitted {
  background: rgba(52, 152, 219, 0.1);
  color: #3498db;
  border: 1px solid rgba(52, 152, 219, 0.2);
}

.status-badge.submitted-late {
  background: rgba(255, 165, 0, 0.1);
  color: #ff9800;
  border: 1px solid rgba(255, 165, 0, 0.3);
}

/* ===============================
   Modern Gradebook Enhancements
================================ */

/* Gradebook Grade Display */
.grade-display {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  min-width: 60px;
}

.grade-display:hover {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(59, 130, 246, 0.12));
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
}

.grade-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  opacity: 0.5;
  font-weight: 500;
  min-width: 60px;
}

.assignment-points {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Enhanced Gradebook Header */
.gradebook-header {
  display: grid;
  grid-template-columns: 220px repeat(auto-fit, minmax(120px, 1fr)) 110px 90px;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, var(--bg-panel), #1a2332);
  border: 1px solid var(--border);
  border-radius: 12px 12px 0 0;
  font-weight: 700;
  color: var(--text-light);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Enhanced Gradebook Rows */
.gradebook-row {
  display: grid;
  grid-template-columns: 220px repeat(auto-fit, minmax(120px, 1fr)) 110px 90px;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: none;
  align-items: center;
  transition: all 0.2s ease;
  position: relative;
}

.gradebook-row:last-child {
  border-radius: 0 0 12px 12px;
}

.gradebook-row:hover {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.05), var(--bg-card));
  border-left: 3px solid var(--accent);
  padding-left: calc(1.5rem - 2px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Student Info in Gradebook */
.gradebook-row .student-info {
  text-align: left;
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.gradebook-row .student-info .student-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-light);
}

.gradebook-row .student-info .student-id {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Week/Assignment Column Headers */
.gradebook-header .week-col {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.week-header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  width: 100%;
}

.week-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-light);
  cursor: default;
  transition: color 0.2s ease;
  text-align: center;
  line-height: 1.3;
}

/* Grade Column Cells */
.grade-col-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
}

/* Average and Letter Grade Styling */
.gradebook-row .average-display {
  text-align: center;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  min-width: 70px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.gradebook-row .letter-grade {
  text-align: center;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
  min-width: 60px;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}

/* Grade Colors - Enhanced */
.average-display.excellent,
.letter-grade.excellent {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.08));
  color: #22c55e;
  border-color: rgba(34, 197, 94, 0.3);
}

.average-display.good,
.letter-grade.good {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.08));
  color: #3b82f6;
  border-color: rgba(59, 130, 246, 0.3);
}

.average-display.average,
.letter-grade.average {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.08));
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.3);
}

.average-display.poor,
.letter-grade.poor {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(239, 68, 68, 0.08));
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.3);
}

/* Hover effects for grades */
.average-display:hover,
.letter-grade:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Gradebook Stats Enhancement */
.gradebook-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: linear-gradient(135deg, var(--bg-panel), #1a2332);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border-color: var(--accent);
}

.stat-icon {
  display: none;
}

.stat-info {
  flex: 1;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* Empty State Enhancement */
.gradebook-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--bg-card), #0d1117);
  border: 2px dashed var(--border);
  border-radius: 12px;
  margin: 2rem 0;
}

.gradebook-empty-state .empty-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.gradebook-empty-state h3 {
  margin: 0 0 0.75rem 0;
  font-size: 1.5rem;
  color: var(--text-light);
  font-weight: 700;
}

.gradebook-empty-state p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 500px;
}

.status-badge.graded {
  background: rgba(46, 204, 113, 0.1);
  color: #2ecc71;
  border: 1px solid rgba(46, 204, 113, 0.2);
}

.btn-action {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-action:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
}

/* Empty State */
.gradebook-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  opacity: 0.6;
}

.gradebook-empty h3 {
  margin: 0 0 0.75rem 0;
  color: var(--text-light);
  font-size: 1.5rem;
  font-weight: 600;
}

.gradebook-empty p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
  max-width: 400px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .gradebook-header {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  
  .gradebook-cards {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .class-info {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .info-item {
    flex-direction: row;
    text-align: left;
    padding: 0.75rem;
  }
  
  .info-icon {
    margin-right: 0.75rem;
    margin-bottom: 0;
  }
  
  .gradebook-table-container {
    font-size: 0.9rem;
  }
  
  .gradebook-table th,
  .gradebook-table td {
    padding: 0.75rem 0.5rem;
  }
}

@media (max-width: 480px) {
  .gradebook-classes {
    padding: 1rem;
  }
  
  .gradebook-card {
    padding: 1rem;
  }
  
  .card-header {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
  }
  
  .view-toggle {
    flex-direction: column;
    width: 100%;
  }
  
  .view-btn {
    justify-content: center;
  }
}

/* Legacy Badge Support */
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: capitalize;
}

.badge.success { background: var(--success); color: #fff; }
.badge.warning { background: var(--warning); color: #fff; }
.badge.danger  { background: var(--danger);  color: #fff; }
.badge.primary { background: var(--accent); color: #fff; }
.badge.secondary { background: var(--bg-panel); color: var(--text-light); }

/* ===============================
   UI-003: Theme & Styling System - LOG ROLE BADGES
   Subtle, professional colors for roles
================================ */
.badge.role-admin {
  background: rgba(239, 68, 68, 0.15); /* soft red */
  color: #ef4444;                      /* red text */
  font-weight: 600;
}

.badge.role-teacher {
  background: rgba(34, 197, 94, 0.15); /* soft green */
  color: #22c55e;                      /* green text */
  font-weight: 600;
}

.badge.role-student {
  background: rgba(59, 130, 246, 0.15); /* soft blue */
  color: #3b82f6;                       /* blue text */
  font-weight: 600;
}

.badge.role-system,
.badge.role-unknown {
  background: rgba(148, 163, 184, 0.15); /* soft gray */
  color: #94a3b8;                        /* muted gray */
  font-weight: 600;
}
/* ===============================
   UI-003: Theme & Styling System - LOG TABLE FONT (Readable + Sleek)
================================ */
#logBody, #logBody td, #logBody th {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.2px;
}


/* ===============================
   UI-003: Theme & Styling System - DATA MANAGEMENT
================================ */
.data-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.data-actions button {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.data-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.data-actions .btn-primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
}

.data-actions .btn-secondary {
  background: var(--bg-panel);
  color: var(--text-light);
  border: 1px solid var(--border);
}

.data-actions .btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
}

.data-actions input[type="file"] {
  display: none;
}

@media (max-width: 768px) {
  .data-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .data-actions button {
    width: 100%;
  }
}

/* ===============================
   DASH-001: Student Dashboard Widgets
   =============================== */

.dashboard-header {
  margin-bottom: 2rem;
}

.dashboard-header h2 {
  margin: 0 0 0.5rem 0;
  color: var(--text-light);
}

.dashboard-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.dashboard-widgets {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.dashboard-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.dashboard-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.widget-header h3 {
  margin: 0;
  color: var(--text-light);
  font-size: 1.2rem;
}

.widget-content {
  min-height: 200px;
}

/* Upcoming Assignments Widget */
.assignments-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.assignment-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.assignment-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.assignment-item.overdue {
  border-left: 4px solid #e74c3c;
  background: rgba(231, 76, 60, 0.05);
}

.assignment-item.due-soon {
  border-left: 4px solid #f39c12;
  background: rgba(243, 156, 18, 0.05);
}

.assignment-item.active {
  border-left: 4px solid #3498db;
  background: rgba(52, 152, 219, 0.05);
}

.assignment-item.no-due-date {
  border-left: 4px solid #95a5a6;
  background: rgba(149, 165, 166, 0.05);
}

.assignment-info {
  flex: 1;
  margin-right: 1rem;
}

.assignment-info h4 {
  margin: 0 0 0.25rem 0;
  color: var(--text-light);
  font-size: 1rem;
}

.assignment-class {
  margin: 0 0 0.25rem 0;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.assignment-desc {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.assignment-due {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  min-width: 120px;
}

.due-date {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  white-space: nowrap;
}

.due-date.overdue {
  color: #e74c3c;
  background: rgba(231, 76, 60, 0.1);
}

.due-date.due-soon {
  color: #f39c12;
  background: rgba(243, 156, 18, 0.1);
}

.no-due-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

.due-date-text {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.overdue-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.overdue-section h4 {
  margin: 0 0 0.75rem 0;
  color: var(--danger);
  font-size: 0.9rem;
  font-weight: 600;
}

.overdue-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.no-assignments {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: 2rem;
}

.more-assignments {
  text-align: center;
  color: var(--accent);
  font-size: 0.9rem;
  margin-top: 1rem;
  font-weight: 500;
}

/* Quick Stats Widget */
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  background: var(--bg-dark);
  border-radius: 8px;
  margin-bottom: 1rem;
}

.stat-item:last-child {
  margin-bottom: 0;
}

.stat-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
}

/* Responsive Design for Dashboard */
@media (max-width: 768px) {
  .dashboard-widgets {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .dashboard-row {
    grid-template-columns: 1fr;
  }
  
  .assignment-item {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .assignment-due {
    align-items: flex-start;
    margin-top: 0.5rem;
    min-width: auto;
  }
  
  .widget-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* ===============================
   MSG-001: Message Center System
   =============================== */

/* Message Center Widget (replaces Quick Stats) - Uses existing quick-stats styles */

/* Message Preview Widget */
.message-preview-widget {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.message-preview-widget:hover {
  background: var(--hover-bg);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.message-preview-widget.unread {
  border-left: 4px solid var(--primary-color);
  background: var(--primary-bg);
}

.message-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  gap: 0.5rem;
}

.message-count {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.unread-count {
  background: var(--primary-color);
  color: white;
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.view-all-btn {
  background: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.view-all-btn:hover {
  background: var(--secondary-hover);
  transform: translateY(-1px);
}

/* Teacher Class Summary Widget */
.class-summary-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-item {
  text-align: center;
  padding: 1rem;
  background: var(--card-bg);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.recent-classes h4 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1rem;
}

.class-summary-item {
  padding: 0.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.class-summary-item:hover {
  background: var(--hover-bg);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.class-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.class-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.student-count {
  color: var(--text-muted);
}

.class-status {
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: capitalize;
}

.class-status.active {
  background: var(--success-bg);
  color: var(--success-color);
}

.class-status.inactive {
  background: var(--danger-bg);
  color: var(--danger-color);
}

/* Message Detail Styling */
.message-detail {
  padding: 1rem 0;
}

.message-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.message-sender {
  font-weight: 600;
  color: var(--text-primary);
}

.message-timestamp {
  color: var(--text-muted);
}

.message-content {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.message-actions {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  border-radius: 6px;
}

.btn-icon {
  padding: 0;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-icon:hover {
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.btn-icon.btn-primary {
  color: var(--primary);
}

.btn-icon.btn-primary:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-icon.btn-secondary {
  color: var(--text-secondary);
}

.btn-icon.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border);
  color: var(--text-primary);
}

.btn-icon.btn-danger {
  color: var(--danger);
}

.btn-icon.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.btn-icon:active {
  transform: translateY(0);
}

/* Admin Message Actions */
.admin-message-actions {
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--border-color);
  background: var(--card-bg);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  min-height: 2.5rem;
}

.admin-message-card {
  position: relative;
  transition: all 0.2s ease;
}

.admin-message-card:hover .admin-message-actions {
  background: var(--hover-bg);
}

.admin-message-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Modern Admin Message Center - Table Style */
.admin-message-center {
  padding: 0;
  max-width: 1400px;
  margin: 0 auto;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.page-title h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.page-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.message-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 1rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.controls-left {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.filter-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.filter-group select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  min-width: 150px;
  transition: all 0.2s ease;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-bg);
}

.controls-right {
  display: flex;
  align-items: center;
}

.message-summary {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.summary-item {
  padding: 0.5rem 1rem;
  background: var(--primary-bg);
  color: var(--primary-color);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.modern-table-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.message-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

.message-table thead {
  background: var(--bg-primary);
  border-bottom: 2px solid var(--border-color);
}

.message-table th {
  padding: 1rem 1.5rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
}

.message-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.message-row {
  cursor: pointer;
  transition: all 0.2s ease;
}

.message-row:hover {
  background: var(--hover-bg);
}

.message-row.unread {
  background: var(--primary-bg);
  border-left: 3px solid var(--primary-color);
}

.message-row:last-child td {
  border-bottom: none;
}

/* Table Cell Styling */
.sender-cell {
  width: 200px;
}

.sender-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sender-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.sender-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.subject-cell {
  width: 300px;
}

.subject-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.subject-text {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.3;
}

.message-preview {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.recipients-cell {
  width: 120px;
}

.recipients-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.recipients-icon {
  font-size: 0.9rem;
  width: 16px;
  height: 16px;
  margin-right: 6px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.recipients-text {
  color: var(--text-muted);
  font-weight: 500;
}

.category-cell {
  width: 120px;
}

.category-badge {
  background: var(--secondary-color);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}

.no-category {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.85rem;
}

.time-cell {
  width: 100px;
}

.time-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.status-cell {
  width: 100px;
}

.status-indicator {
  display: flex;
  align-items: center;
}

.status-badge {
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.unread {
  background: var(--primary-bg);
  color: var(--primary-color);
}

.status-badge.read {
  background: var(--success-bg);
  color: var(--success-color);
}

.actions-cell {
  width: 120px;
}

.table-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.table-actions .btn-sm {
  padding: 0.4rem;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.table-actions .btn-sm:hover {
  transform: translateY(-1px);
}

.no-messages-cell {
  text-align: center;
  padding: 3rem 1.5rem;
}

.no-messages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.no-messages-icon {
  font-size: 3rem;
  opacity: 0.5;
}

.no-messages h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.25rem;
}

.no-messages p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Admin Message Recipients (Legacy - keeping for compatibility) */
.admin-message-recipients {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.recipient-label {
  font-weight: 600;
  color: var(--text-muted);
}

.recipient-list {
  color: var(--text-primary);
  font-weight: 500;
}

.message-preview-content {
  position: relative;
  transition: all 0.2s ease;
}

.message-preview-content[onclick] {
  cursor: pointer;
  padding: 0.75rem;
  margin: -0.75rem;
  border-radius: var(--border-radius);
}

.message-preview-content[onclick]:hover {
  background: var(--hover-bg);
  transform: translateX(4px);
}

.message-preview-subject {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.message-preview-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.message-preview-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.message-sender {
  font-weight: 500;
  color: var(--text-primary);
}

.message-time {
  color: var(--text-muted);
}

.unread-indicator {
  position: absolute;
  top: 0;
  right: 0;
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
}

/* Message Preview Modal */
.recent-messages {
  max-width: 600px;
}

.recent-messages-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.recent-messages-header h4 {
  margin: 0 0 0.5rem 0;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
}

.recent-messages-header small {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.recent-messages-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 400px;
  overflow-y: auto;
}

.message-preview-item {
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.message-preview-item:hover {
  background: var(--hover-bg);
  border-color: var(--primary-color);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.message-preview-item.unread {
  border-left: 3px solid var(--primary-color);
  background: var(--primary-bg);
}

.message-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.message-sender {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.message-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.message-subject {
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
  font-size: 0.95rem;
}

.message-preview-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
  line-height: 1.4;
}

.unread-dot {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
}

/* Message Detail Modal */
.message-detail {
  max-width: 600px;
}

.message-detail-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.message-detail-header h4 {
  margin: 0 0 0.75rem 0;
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 700;
}

.message-meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.message-meta .sender {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.message-meta .timestamp {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.message-content {
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.message-category {
  background: var(--primary-bg);
  color: var(--primary-color);
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-block;
}

/* Admin Message Center */
.admin-message-center {
  max-width: 1200px;
  margin: 0 auto;
}

.admin-message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.admin-message-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.admin-message-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.message-stats {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Message Filters */
.message-filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.message-filters select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  min-width: 150px;
}

.message-filters select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-bg);
}

/* Admin Message Cards */
.admin-messages-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-message-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.admin-message-card:hover {
  background: var(--hover-bg);
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.admin-message-card.unread {
  border-left: 4px solid var(--primary-color);
  background: var(--primary-bg);
}

.admin-message-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.admin-message-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.admin-sender-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.message-category-badge {
  background: var(--primary-color);
  color: white;
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.admin-message-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.admin-message-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.unread-indicator {
  width: 8px;
  height: 8px;
  background: var(--primary-color);
  border-radius: 50%;
}

.admin-message-content {
  margin-top: 0.5rem;
}

.admin-message-subject {
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
}

.admin-message-preview {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.5;
}

/* Send Message Form */
.send-message-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.send-message-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.send-message-form label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.send-message-form input,
.send-message-form select,
.send-message-form textarea {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
}

.send-message-form input:focus,
.send-message-form select:focus,
.send-message-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px var(--primary-bg);
}

.send-message-form textarea {
  resize: vertical;
  min-height: 120px;
}

.recipients-info {
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

.recipients-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.no-messages {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.no-messages-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.no-messages h3 {
  margin: 0 0 0.5rem 0;
  color: var(--text-primary);
  font-size: 1.2rem;
}

.no-messages p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .admin-message-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .admin-message-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .message-filters {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .message-filters select {
    min-width: 100%;
  }
  
  .admin-message-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .admin-message-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .admin-message-meta {
    align-self: flex-end;
  }
}

/* ===============================
   ACAD-007: Attendance Management System
   =============================== */

.attendance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.attendance-header h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--text-light);
  font-size: 1.3rem;
}

.attendance-header h3 svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.attendance-controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.attendance-controls input[type="date"] {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.9rem;
}

.attendance-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.stat-card .stat-number {
  display: block;
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-card .stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.attendance-table {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.attendance-table-header {
  display: grid;
  grid-template-columns: 2fr 1.5fr 2fr;
  background: var(--bg-dark);
  padding: 1rem;
  font-weight: 600;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
}

.attendance-table-header .student-col {
  text-align: left;
}

.attendance-table-header .status-col {
  text-align: center;
}

.attendance-table-header .actions-col {
  text-align: center;
}

.attendance-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 2fr;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: background-color 0.2s ease;
}

.attendance-row:hover {
  background: var(--bg-hover);
}

.attendance-row:last-child {
  border-bottom: none;
}

.student-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.student-name {
  font-weight: 500;
  color: var(--text-light);
  font-size: 1rem;
}

.student-id {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-display {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.present {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.status-badge.absent {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-badge.late {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-badge.unmarked {
  background: rgba(107, 114, 128, 0.1);
  color: #6b7280;
  border: 1px solid rgba(107, 114, 128, 0.3);
}

.status-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  width: 100%;
}

.status-actions button {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.status-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.status-actions button.active {
  font-weight: 600;
}

/* Attendance Status Icon Buttons */
.btn-icon.btn-present {
  color: var(--success);
}

.btn-icon.btn-present:hover {
  background: rgba(34, 197, 94, 0.1);
  border-color: var(--success);
}

.btn-icon.btn-present.active {
  background: var(--success);
  color: white;
  border-color: var(--success);
}

.btn-icon.btn-absent {
  color: var(--danger);
}

.btn-icon.btn-absent:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
}

.btn-icon.btn-absent.active {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.btn-icon.btn-late {
  color: var(--warning);
}

.btn-icon.btn-late:hover {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
}

.btn-icon.btn-late.active {
  background: var(--warning);
  color: white;
  border-color: var(--warning);
}

.attendance-marking {
  text-align: center;
}

.attendance-marking p {
  margin-bottom: 1.5rem;
  color: var(--text-light);
  font-size: 1.1rem;
}

.bulk-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.bulk-actions button {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.bulk-actions button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Responsive Design for Attendance */
@media (max-width: 768px) {
  .attendance-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .attendance-controls {
    width: 100%;
    justify-content: space-between;
  }
  
  .attendance-table-header,
  .attendance-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  
  .attendance-table-header {
    display: none;
  }
  
  .attendance-row {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 0.5rem;
  }
  
  .student-info {
    text-align: center;
    margin-bottom: 0.5rem;
  }
  
  .status-display {
    margin-bottom: 0.5rem;
    justify-content: center;
  }
  
  .status-actions {
    justify-content: center;
    align-items: center;
  }
  
  .bulk-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ===============================
   ANALYTICS DASHBOARD STYLES
   MSG-ANALYTICS-001: Message Analytics - Analytics dashboard styling
================================ */

.analytics-dashboard {
  padding: 0;
  background: transparent;
}

.analytics-header {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.header-title h2 {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  font-size: 28px;
  font-weight: 600;
}

.header-subtitle {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.analytics-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.analytics-overview {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.overview-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
}

.overview-stat {
  text-align: center;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.overview-stat .stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.overview-stat .stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.analytics-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 20px;
}

.report-card {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  padding: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
  overflow: hidden;
}

.report-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.report-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.report-card:hover::before {
  transform: scaleX(1);
}

.report-card .card-content {
  flex: 1;
}

.report-card .card-content h3 {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 600;
}

.report-card .card-content p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

.card-arrow {
  font-size: 24px;
  color: var(--text-secondary);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.report-card:hover .card-arrow {
  color: var(--primary-color);
  transform: translateX(4px);
}

/* Report Pages */
.report-page {
  padding: 0;
  background: transparent;
}

.report-header {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.report-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-back {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  padding: 8px 0;
  transition: color 0.2s ease;
  align-self: flex-start;
}

.btn-back:hover {
  color: var(--primary-color);
}

.report-title h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 28px;
  font-weight: 600;
}

.report-title p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
}

.report-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.report-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.report-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.report-section h3 {
  margin: 0 0 20px 0;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.metrics-grid-large {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.metric-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.metric-card .metric-icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  border-radius: 8px;
}

.metric-card .metric-content {
  flex: 1;
}

.metric-card .metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.metric-card .metric-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.user-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.user-group-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.user-group-card h4 {
  margin: 0 0 16px 0;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
}

.performance-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.performance-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.performance-card h4 {
  margin: 0 0 12px 0;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}

.performance-card .metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.metric-trend {
  font-size: 14px;
  font-weight: 600;
}

.metric-trend.positive {
  color: var(--success-color);
}

.metric-trend.stable {
  color: var(--text-secondary);
}

.export-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.export-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 24px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.export-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-color: var(--primary-color);
}

.export-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.export-card h3 {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
}

.export-card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.4;
}

/* Professional Analytics Styles */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.summary-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.summary-card h4 {
  margin: 0 0 12px 0;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}

.summary-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 8px 0;
}

.summary-detail {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
}

.analysis-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.analysis-card h4 {
  margin: 0 0 16px 0;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
}

.role-breakdown {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.role-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--card-bg);
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.role-label {
  font-weight: 600;
  color: var(--text-primary);
}

.role-metrics {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
}

.role-metrics span {
  font-size: 14px;
  color: var(--text-secondary);
}

.heatmap {
  display: grid;
  grid-template-columns: 60px repeat(7, 1fr);
  gap: 2px;
  font-size: 12px;
}

.heatmap-header {
  display: contents;
}

.heatmap-label {
  font-weight: 600;
  color: var(--text-primary);
  padding: 8px;
  text-align: center;
}

.heatmap-day {
  font-weight: 600;
  color: var(--text-primary);
  padding: 8px;
  text-align: center;
}

.heatmap-row {
  display: contents;
}

.heatmap-hour {
  font-size: 11px;
  color: var(--text-secondary);
  padding: 8px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.heatmap-cell {
  width: 100%;
  height: 20px;
  border-radius: 2px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.heatmap-cell:hover {
  opacity: 0.8;
}

.usage-metrics {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.insights-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.insight-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.insight-card h4 {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}

.insight-card p {
  margin: 0 0 12px 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.4;
}

.insight-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-color);
}

.recommendations {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.recommendation-item {
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid;
}

.recommendation-item.warning {
  background: rgba(251, 191, 36, 0.1);
  border-left-color: #f59e0b;
}

.recommendation-item.info {
  background: rgba(59, 130, 246, 0.1);
  border-left-color: #3b82f6;
}

.recommendation-item.success {
  background: rgba(34, 197, 94, 0.1);
  border-left-color: #22c55e;
}

.recommendation-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.recommendation-description {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.4;
}

.risk-analysis {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.risk-analysis p {
  margin: 0 0 16px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.risk-metrics {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.risk-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.risk-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.risk-count {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.engagement-index {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.engagement-index p {
  margin: 0 0 16px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.engagement-metrics {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.engagement-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.engagement-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.engagement-count {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.user-management-metrics {
  display: flex;
  flex-direction: column;
  gap: 12px;
}


.no-data {
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
  padding: 20px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* Modern Chart.js Analytics Dashboard - Matching Webapp Theme */
.analytics-dashboard {
  background: var(--bg-dark);
  min-height: 100vh;
  color: var(--text-light);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
}

.analytics-header {
  background: var(--bg-panel);
  color: var(--text-light);
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.analytics-header h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-light);
}

.analytics-nav {
  display: flex;
  justify-content: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-button {
  padding: 1.2rem 2.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-bottom: 3px solid transparent;
  position: relative;
  overflow: hidden;
}

.nav-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left 0.5s;
}

.nav-button:hover::before {
  left: 100%;
}

.nav-button:hover {
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-light);
  transform: translateY(-2px);
}

.nav-button.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
  border-bottom-color: var(--accent);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.2);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}

.filter-section {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  flex: 1;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.filter-group label {
  font-weight: 600;
  color: var(--text-light);
  margin: 0;
  font-size: 0.95rem;
}

.filter-group select {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-light);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.refresh-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.refresh-btn:hover::before {
  left: 100%;
}

.refresh-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.refresh-btn:active {
  transform: translateY(0);
}

.analytics-container {
  padding: 2rem;
}

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.kpi-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.kpi-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.kpi-card h4 {
  margin: 0 0 1rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.kpi-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  line-height: 1;
}

.dashboard {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.dashboard.active {
  display: grid;
}

.chart-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.chart-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.chart-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.chart-card h3 {
  margin: 0 0 1.5rem 0;
  font-size: 1.3rem;
  color: var(--text-light);
  font-weight: 700;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.75rem;
  position: relative;
}

.chart-card h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 1px;
}

.chart-card canvas {
  width: 100% !important;
  height: 250px !important;
  border-radius: 8px;
}

/* Responsive Design - Matching Webapp Theme */
@media (max-width: 1024px) {
  .analytics-header h2 {
    font-size: 2rem;
  }
  
  .kpis {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .dashboard {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }
}

@media (max-width: 768px) {
  .analytics-header {
    padding: 1rem;
  }
  
  .analytics-header h2 {
    font-size: 1.25rem;
  }
  
  .analytics-nav {
    flex-direction: column;
    padding: 0 1rem;
  }
  
  .nav-button {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 0.5rem;
  }
  
  .filters {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    padding: 1.5rem 1rem;
  }
  
  .filter-group {
    justify-content: space-between;
  }
  
  .kpis {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .kpi-card {
    padding: 1.5rem;
  }
  
  .kpi-value {
    font-size: 2rem;
  }
  
  .dashboard {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .chart-card {
    padding: 1.5rem;
  }
  
  .chart-card canvas {
    height: 200px !important;
  }
  
  .analytics-container {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .analytics-header {
    padding: 0.75rem;
  }
  
  .analytics-header h2 {
    font-size: 1.125rem;
  }
  
  .kpi-card {
    padding: 1.25rem;
  }
  
  .kpi-value {
    font-size: 1.8rem;
  }
  
  .chart-card {
    padding: 1.25rem;
  }
  
  .chart-card h3 {
    font-size: 1.1rem;
  }
  
  .chart-card canvas {
    height: 180px !important;
  }
}

.analytics-card {
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: all 0.3s ease;
}

.analytics-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-primary);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-icon {
  font-size: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  border-radius: 8px;
}

.card-title h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
}

.card-content {
  padding: 24px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.metric-item {
  text-align: center;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.card-details {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.card-details h4 {
  margin: 0 0 16px 0;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}

.breakdown-item {
  margin-bottom: 16px;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.breakdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.breakdown-name {
  font-weight: 600;
  color: var(--text-primary);
}

.breakdown-count {
  color: var(--text-secondary);
  font-size: 14px;
}

.breakdown-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.breakdown-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
  border-radius: 3px;
  transition: width 0.3s ease;
}

.breakdown-stats {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
}

.breakdown-read {
  color: var(--accent-color);
  font-weight: 600;
}

.breakdown-unread {
  color: var(--text-secondary);
}

.message-preview {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.message-preview:last-child {
  border-bottom: none;
}

.message-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.message-status.read {
  background: var(--success-color);
}

.message-status.unread {
  background: var(--warning-color);
}

.message-info {
  flex: 1;
}

.message-subject {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
  margin-bottom: 2px;
}

.message-meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.user-groups {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.user-group h4 {
  margin: 0 0 12px 0;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
}

.group-metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--border-color);
}

.metric-row:last-child {
  border-bottom: none;
}

.trends-container {
  display: flex;
  gap: 16px;
}

.trend-item {
  flex: 1;
  text-align: center;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.trend-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.trend-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.trend-indicator {
  font-size: 16px;
}

.trend-indicator.positive {
  color: var(--success-color);
}

.trend-indicator.negative {
  color: var(--error-color);
}

.trend-indicator.stable {
  color: var(--text-secondary);
}

.activity-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.activity-item {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.activity-icon {
  font-size: 20px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  border-radius: 6px;
}

.activity-info {
  flex: 1;
}

.activity-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
  margin-bottom: 2px;
}

.activity-count {
  color: var(--text-secondary);
  font-size: 12px;
}

.activity-feed-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.activity-feed-item:last-child {
  border-bottom: none;
}

.activity-details {
  flex: 1;
}

.activity-action {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
  margin-bottom: 2px;
}

.activity-user {
  color: var(--text-secondary);
  font-size: 12px;
  margin-bottom: 2px;
}

.activity-time {
  color: var(--text-secondary);
  font-size: 11px;
}

.performance-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.performance-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.performance-label {
  color: var(--text-secondary);
  font-size: 14px;
}

.performance-value {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 16px;
}

.performance-trend {
  color: var(--success-color);
  font-size: 14px;
}

.insight-item {
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 8px;
}

.insight-item:last-child {
  margin-bottom: 0;
}

.insight-text {
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.4;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
  border-radius: 6px;
}

.analytics-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.analytics-section h3 {
  margin: 0 0 20px 0;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
  font-size: 24px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  border-radius: 8px;
}

.stat-content {
  flex: 1;
}

.stat-number {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.category-performance {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.category-item {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 16px;
  border: 1px solid var(--border-color);
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.category-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 16px;
}

.category-count {
  color: var(--text-secondary);
  font-size: 14px;
}

.category-stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-bar {
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  overflow: hidden;
}

.stat-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
  border-radius: 4px;
  transition: width 0.3s ease;
}

.stat-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.read-rate {
  color: var(--accent-color);
  font-weight: 600;
  font-size: 14px;
}

.unread-count {
  color: var(--text-secondary);
  font-size: 14px;
}

.engagement-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.engagement-card {
  background: var(--bg-primary);
  border-radius: 8px;
  padding: 20px;
  border: 1px solid var(--border-color);
}

.engagement-card h4 {
  margin: 0 0 16px 0;
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 600;
}

.engagement-metrics {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.metric:last-child {
  border-bottom: none;
}

.metric-label {
  color: var(--text-secondary);
  font-size: 14px;
}

.metric-value {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 16px;
}

.recent-activity {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.activity-item:hover {
  background: var(--hover-bg);
}

.activity-icon {
  font-size: 20px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  border-radius: 6px;
}

.activity-content {
  flex: 1;
}

.activity-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
  margin: 0 0 4px 0;
}

.activity-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 12px;
}

.activity-sender {
  color: var(--text-secondary);
}

.activity-time {
  color: var(--text-secondary);
}

.activity-status {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.activity-status.read {
  background: var(--success-bg);
  color: var(--success-color);
}

.activity-status.unread {
  background: var(--warning-bg);
  color: var(--warning-color);
}

.no-data {
  text-align: center;
  color: var(--text-secondary);
  font-style: italic;
  padding: 20px;
  margin: 0;
}

/* Responsive Design for Analytics */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .header-actions {
    width: 100%;
    justify-content: flex-start;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .engagement-stats {
    grid-template-columns: 1fr;
  }
  
  .activity-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

/* ===============================
   SETTINGS-001: Settings Page Styles
   =============================== */

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.settings-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.settings-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.settings-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
}

.settings-card-header svg {
  flex-shrink: 0;
  opacity: 0.9;
}

.settings-card-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: white;
}

.settings-card-content {
  padding: 1.5rem;
}

.settings-card h3 {
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-group input[readonly],
.form-group input.disabled,
.form-group input[disabled] {
  background: var(--bg-panel);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* Info banner for important notes */
.info-banner {
  padding: 12px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.info-banner strong {
  color: var(--text-light);
  font-weight: 600;
}

/* Settings form input text handling */
.form-group input[type="text"] {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  box-sizing: border-box;
}

.form-group input[type="text"]:focus {
  white-space: normal;
  overflow: visible;
  text-overflow: initial;
}

.checkbox-group {
  margin-bottom: 0.75rem;
}

.checkbox-group:last-child {
  margin-bottom: 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  color: var(--text-light);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.checkbox-label:hover {
  color: var(--accent);
}

.checkbox-label input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  position: relative;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-size: 12px;
  font-weight: bold;
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.button-group button {
  width: 100%;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.button-group button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.info-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.info-item:last-child {
  border-bottom: none;
}

.info-item label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.info-item span {
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.9rem;
}

.settings-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin-top: 2rem;
  padding: 2rem;
  border-top: 1px solid var(--border);
}

.settings-actions button {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 140px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.settings-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* General Settings specific styling */
.settings-card:first-child .form-group {
  max-width: 100%;
}

.settings-card:first-child .form-group input {
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

/* Storage Breakdown Modal Styling */
.storage-breakdown {
  padding: 1rem;
}

.storage-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.storage-summary h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.3rem;
}

.storage-summary h3 svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

.total-size {
  font-size: 1.1rem;
  color: var(--text-light);
  margin: 0 0 1rem 0;
}

.storage-bar {
  width: 100%;
  height: 12px;
  background: var(--bg-dark);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.storage-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}

.storage-limit {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.storage-categories h4 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 1.1rem;
}

.storage-categories h4 svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.storage-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.category-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-light);
  font-size: 0.95rem;
}

.category-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.category-icon svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.category-size {
  font-weight: 600;
  color: var(--accent);
  font-size: 0.9rem;
}

.category-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-dark);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.category-fill {
  height: 100%;
  transition: width 0.3s ease;
  border-radius: 4px;
}

.category-details {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.storage-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.storage-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex: 1;
  padding: 0.75rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.storage-actions button svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.storage-actions .btn-secondary {
  background: var(--bg-panel);
  color: var(--text-light);
  border: 1px solid var(--border);
}

.storage-actions .btn-secondary:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.storage-actions .btn-danger {
  background: var(--danger);
  color: white;
}

.storage-actions .btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

/* Responsive Design for Settings */
@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .settings-card {
    padding: 1rem;
  }
  
  .settings-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .settings-actions button {
    width: 100%;
  }
  
  .button-group {
    gap: 0.5rem;
  }
  
  .info-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

/* ===============================
   MODERN TEACHER GRADEBOOK UI
   Clean, sharp, and modern gradebook interface
================================ */

.gradebook-teacher-container {
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.gradebook-header {
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  color: white;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gradebook-title h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.gradebook-subtitle {
  margin: 0.5rem 0 0 0;
  opacity: 0.9;
  font-size: 0.95rem;
}

.gradebook-actions .btn-primary {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.gradebook-actions .btn-primary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.gradebook-content {
  padding: 2rem;
}

.gradebook-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: all 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.stat-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border-radius: 8px;
  color: white;
}

.stat-info {
  flex: 1;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.gradebook-table-wrapper {
  background: var(--bg-panel);
  border-radius: 8px;
  overflow-x: auto;
  overflow-y: visible;
  border: 1px solid var(--border);
  max-width: 100%;
}

.gradebook-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.gradebook-table th {
  background: var(--bg-dark);
  color: var(--text-light);
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.gradebook-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.student-column {
  width: 200px;
  min-width: 200px;
  position: sticky;
  left: 0;
  background: var(--bg-dark);
  z-index: 5;
}

.week-column {
  min-width: 180px;
  width: 180px;
  text-align: center;
}

.average-column,
.letter-column {
  width: 80px;
  text-align: center;
  background: var(--bg-panel);
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.week-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  padding: 0.5rem;
  min-height: 80px;
}

.week-label {
  font-weight: 600;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.2s;
  text-align: center;
  word-wrap: break-word;
  line-height: 1.2;
  max-width: 100%;
  font-size: 0.85rem;
}

.week-label:hover {
  background: rgba(59, 130, 246, 0.1);
}

.week-date-input {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-light);
  text-align: center;
  width: 120px;
  min-width: 120px;
  margin: 0 auto;
  display: block;
}

.week-delete-btn {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.week-delete-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  transform: scale(1.1);
}

.student-row:hover {
  background: rgba(59, 130, 246, 0.05);
}

/* Gradebook Header and Rows (like attendance) */
.gradebook-header {
  display: grid;
  grid-template-columns: 200px repeat(auto-fit, minmax(80px, 1fr)) 100px 80px;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px 8px 0 0;
  font-weight: 600;
  color: var(--text-light);
  font-size: 0.9rem;
}

.gradebook-row {
  display: grid;
  grid-template-columns: 200px repeat(auto-fit, minmax(80px, 1fr)) 100px 80px;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: none;
  align-items: center;
  transition: background 0.2s ease;
}

.gradebook-row:last-child {
  border-radius: 0 0 8px 8px;
}

.gradebook-row:hover {
  background: var(--bg-hover);
}

.gradebook-header .student-col {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  justify-content: flex-start;
  text-align: left;
}

/* Student info uses global .student-info styles */
.gradebook-row .student-info {
  text-align: left;
  align-self: center;
}

.gradebook-header .week-col {
  text-align: center;
}

.gradebook-header .average-col,
.gradebook-header .grade-col {
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.week-header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.week-label {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.week-label:hover {
  color: var(--accent);
}

.week-date-input {
  width: 100%;
  max-width: 120px;
  padding: 0.25rem;
  font-size: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-panel);
  color: var(--text-primary);
}

.week-delete-btn {
  margin-top: 0.25rem;
}

.grade-col-cell {
  display: flex;
  justify-content: center;
  align-items: center;
}

.grade-input {
  width: 60px;
  padding: 0.4rem;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-panel);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.grade-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-card);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.gradebook-row .average-display,
.gradebook-row .letter-grade {
  text-align: center;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.average-display,
.letter-grade {
  text-align: center;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
}

.average-display.excellent,
.letter-grade.excellent {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
}

.average-display.good,
.letter-grade.good {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
}

.average-display.average,
.letter-grade.average {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.average-display.poor,
.letter-grade.poor {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Legacy styles */
.student-cell {
  position: sticky;
  left: 0;
  background: var(--bg-card);
  z-index: 2;
  padding: 1rem !important;
  border-right: 1px solid var(--border);
}

.student-info-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.student-info-cell .student-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.student-info-cell .student-id {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Legacy student-info for non-gradebook use */
.student-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.student-info .student-name {
  font-weight: 600;
  color: var(--text-light);
}

.student-username {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.grade-cell {
  text-align: center;
  padding: 0.75rem;
  vertical-align: middle;
  width: 180px;
}

.grade-input {
  width: 70px;
  text-align: center;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text-light);
  font-weight: 500;
  transition: all 0.2s;
  margin: 0 auto;
  display: block;
}

.grade-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-panel);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.grade-input:hover {
  border-color: var(--accent);
}

.average-cell,
.letter-cell {
  text-align: center;
  background: var(--bg-panel);
}

.average-display {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.5rem;
  border-radius: 6px;
  display: inline-block;
  min-width: 40px;
}

.letter-grade {
  font-size: 1.2rem;
  font-weight: 700;
  padding: 0.5rem;
  border-radius: 6px;
  display: inline-block;
  min-width: 30px;
}

/* Grade color coding */
.excellent {
  background: #10b981;
  color: white;
}

.good {
  background: #3b82f6;
  color: white;
}

.average {
  background: #f59e0b;
  color: white;
}

.poor {
  background: #ef4444;
  color: white;
}

.gradebook-empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
}

.gradebook-empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.gradebook-empty-state h3 {
  margin: 0 0 0.5rem 0;
  color: var(--text-light);
}

.gradebook-empty-state p {
  margin: 0;
  font-size: 0.95rem;
}

/* ===============================
   STUDENT GRADEBOOK CENTERING
   Center week titles and grades in student view
=============================== */

.gradebook-table tbody td {
  text-align: center;
  vertical-align: middle;
  padding: 1rem;
}

.gradebook-table tbody td.average,
.gradebook-table tbody td.letter {
  font-weight: 700;
  font-size: 1.1rem;
}

/* Student grade display styling */
.grade-display {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.5rem;
  border-radius: 6px;
  display: inline-block;
  min-width: 40px;
  text-align: center;
}

.grade-display.excellent {
  background: #10b981;
  color: white;
}

.grade-display.good {
  background: #3b82f6;
  color: white;
}

.grade-display.average {
  background: #f59e0b;
  color: white;
}

.grade-display.poor {
  background: #ef4444;
  color: white;
}

/* ===============================
   UI-003: Theme & Styling System - LIGHT THEME
================================ */

/* Light Theme - Modern Professional */
.theme-light {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-dark: #f1f5f9;
  --bg-panel: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #1e293b;
  --border: #e2e8f0;
  --accent: #3b82f6;
  --accent-2: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
}

.theme-light body {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.theme-light .card,
.theme-light .settings-card,
.theme-light .modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.theme-light .btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.theme-light .btn-primary:hover {
  background: var(--accent-2);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.theme-light .btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.theme-light .btn-secondary:hover {
  background: var(--bg-dark);
  border-color: var(--accent);
}

.theme-light .btn-danger {
  background: var(--danger);
  color: white;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.theme-light .btn-danger:hover {
  background: #dc2626;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.theme-light .form-group input,
.theme-light .form-group select,
.theme-light .form-group textarea {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.theme-light .form-group input:focus,
.theme-light .form-group select:focus,
.theme-light .form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.theme-light .nav-item {
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.theme-light .nav-item:hover {
  color: var(--accent);
  background: var(--bg-dark);
}

.theme-light .nav-item.active {
  color: var(--accent);
  background: var(--bg-secondary);
  box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
}

.theme-light .sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
}

.theme-light .content {
  background: var(--bg-primary);
}

.theme-light .attendance-header,
.theme-light .settings-card h3 {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.theme-light .navbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.theme-light .user-info {
  color: var(--text-primary);
}

.theme-light .user-role {
  color: var(--text-secondary);
}

.theme-light .logout-btn {
  color: var(--text-primary);
  background: var(--bg-dark);
  border: 1px solid var(--border);
}

.theme-light .logout-btn:hover {
  background: var(--accent);
  color: white;
}

.theme-light .sidebar-title {
  color: var(--text-primary);
}

.theme-light .nav-menu button {
  color: var(--text-secondary);
  background: transparent;
  border: none;
  transition: all 0.2s ease;
}

.theme-light .nav-menu button:hover {
  color: var(--accent);
  background: var(--bg-dark);
}

.theme-light .nav-menu button.active {
  color: var(--accent);
  background: var(--bg-secondary);
  box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
}

.theme-light .toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.theme-light .modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.theme-light .modal-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.theme-light .modal-body {
  background: var(--bg-card);
  color: var(--text-primary);
}

.theme-light .modal-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.theme-light .table {
  background: var(--bg-card);
  color: var(--text-primary);
}

.theme-light .table th {
  background: var(--bg-dark);
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.theme-light .table td {
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.theme-light .table tr:hover {
  background: var(--bg-dark);
}

.theme-light .info-item {
  color: var(--text-primary);
}

.theme-light .info-item label {
  color: var(--text-secondary);
}

.theme-light .info-item span {
  color: var(--accent);
}

.theme-light .settings-grid {
  gap: 1.5rem;
}

.theme-light .settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.theme-light .settings-card h3 {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.theme-light .form-group label {
  color: var(--text-primary);
  font-weight: 500;
}

.theme-light .form-group input,
.theme-light .form-group select {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.theme-light .form-group input:focus,
.theme-light .form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.theme-light .settings-actions {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem;
  margin-top: 2rem;
  border-radius: 8px;
}

.theme-light .settings-actions button {
  transition: all 0.2s ease;
  padding: 0.75rem 2rem;
  font-weight: 500;
  min-width: 140px;
}

.theme-light .settings-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* ===============================
   SECTION DIVIDERS
================================ */

.section-divider {
  height: 1px;
  background: var(--border);
  margin: 1rem 0;
  border: none;
}

/* ===============================
   GRADE BADGES
================================ */

.grade-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
}

.grade-badge.grade-a {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.grade-badge.grade-b {
  background: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.grade-badge.grade-c {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.grade-badge.grade-d {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ===============================
   UI-003: Modern Segmented Toggle Control
================================ */
.view-toggle-segmented {
  display: inline-flex;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.view-toggle-segmented .segment {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.view-toggle-segmented .segment svg {
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.view-toggle-segmented .segment span {
  font-size: 0.8125rem;
}

.view-toggle-segmented .segment:hover {
  color: var(--text-light);
  background: rgba(255, 255, 255, 0.05);
}

.view-toggle-segmented .segment:hover svg {
  opacity: 1;
}

.view-toggle-segmented .segment.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.view-toggle-segmented .segment.active svg {
  opacity: 1;
}

.view-toggle-segmented .segment:active {
  transform: scale(0.98);
}

/* ===============================
   Modern Button Enhancements
================================ */

/* Modern Primary Button */
.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  letter-spacing: 0.025em;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* Modern Secondary Button */
.btn-secondary {
  background: var(--bg-panel);
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

/* Modern Icon Buttons */
.btn-icon {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-icon:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.btn-icon.btn-primary:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
}

.btn-icon.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-icon.btn-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
}

/* Modern Edit/Delete Icon Buttons */
.icon-btn {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 1.1rem;
}

.icon-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.icon-btn.edit:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
}

.icon-btn.delete:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
}

.icon-btn:active {
  transform: translateY(0) scale(1);
}

/* Modern Enrollment Buttons */
#selectAllBtn, #removeAllBtn {
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#selectAllBtn:hover, #removeAllBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

#selectAllBtn:active, #removeAllBtn:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

/* ===============================
   Toggle Switch Styles for Preferences
   =============================== */

.toggle-group {
  margin-bottom: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.2s ease;
}

.toggle-group:last-child {
  border-bottom: none;
}

.toggle-group:hover {
  background-color: var(--bg-hover);
  border-radius: 8px;
  padding: 0.75rem;
  margin: 0 -0.75rem 0.75rem -0.75rem;
}

.toggle-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 0.95rem;
  position: relative;
  user-select: none;
}

.toggle-label-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex-grow: 1;
}

.toggle-title {
  font-weight: 500;
  color: var(--text-light);
  font-size: 0.95rem;
}

.toggle-description {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.toggle-input {
  display: none;
}

.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  background-color: var(--bg-dark);
  border: 2px solid var(--border);
  border-radius: 13px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
  cursor: pointer;
}

.toggle-switch::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--text-light);
  top: 2px;
  left: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-input:checked + .toggle-switch {
  background-color: var(--accent);
  border-color: var(--accent);
}

.toggle-input:checked + .toggle-switch::before {
  transform: translateX(22px);
  background-color: white;
}

.toggle-label:hover .toggle-switch {
  border-color: var(--accent);
}

.toggle-input:focus + .toggle-switch {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  border-color: var(--accent);
}

/* Light theme adjustments for toggles */
.theme-light .toggle-switch {
  background-color: #e2e8f0;
  border-color: #cbd5e1;
}

.theme-light .toggle-switch::before {
  background-color: white;
}

.theme-light .toggle-input:checked + .toggle-switch {
  background-color: var(--accent);
  border-color: var(--accent);
}

.theme-light .toggle-input:checked + .toggle-switch::before {
  background-color: white;
}

.theme-light .toggle-label:hover .toggle-switch {
  border-color: var(--accent);
}