/* Eredda School Management System - Theme Variables */
:root {
  /* Default Dark Theme */
  --primary-bg: #1a1d29;           /* Main background */
  --secondary-bg: #252837;         /* Card/panel background */
  --card-bg: #252837;               /* Card background fallback */
  --sidebar-bg: #1e213a;           /* Sidebar background */
  --accent-blue: #3b82f6;          /* Blue accent */
  --accent-purple: #8b5cf6;        /* Purple accent */
  --accent-green: #10b981;         /* Green accent (success) */
  --accent-orange: #f59e0b;        /* Orange accent (warning) */
  --accent-red: #ef4444;           /* Red accent (danger) */
  --accent-gold: #fbbf24;          /* Gold accent (aggregate) */
  
  /* Text Colors */
  --text-primary: #ffffff;         /* Primary text */
  --text-secondary: #9ca3af;       /* Secondary text */
  --text-muted: #6b7280;           /* Muted text */
  
  /* Component Colors */
  --border-color: #374151;         /* Borders */
  --hover-bg: #374151;             /* Hover states */
  --input-bg: #374151;             /* Input backgrounds */
  --dropdown-bg: #1f2433;          /* Native dropdown background */
  --form-color-scheme: dark;       /* Native control scheme */
  
  /* State Colors */
  --success-color: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --success-text: #10b981;
  --success-border: #10b981;
  --success-hover: #059669;
  
  --danger-color: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --danger-text: #ef4444;
  --danger-border: #ef4444;
  --danger-hover: #dc2626;
  
  --warning-color: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --warning-text: #f59e0b;
  --warning-border: #f59e0b;
  --warning-hover: #d97706;
  
  --info-color: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.1);
  --info-text: #3b82f6;
  --info-border: #3b82f6;
  --info-hover: #2563eb;
  
  --accent-color: #8b5cf6;
  --accent-bg: rgba(139, 92, 246, 0.1);
  --accent-border: #8b5cf6;
  --accent-hover: #7c3aed;
  
  /* Glass Effect Colors */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.25);
}

/* Light Theme */
[data-theme="light"] {
  --primary-bg: #f8fafc;           /* Light main background */
  --secondary-bg: #ffffff;         /* Light card/panel background */
  --card-bg: #ffffff;               /* Light theme card background */
  --sidebar-bg: #ffffff;           /* Light sidebar background */
  --accent-blue: #2563eb;          /* Darker blue for better contrast */
  --accent-purple: #7c3aed;        /* Darker purple for better contrast */
  --accent-green: #059669;         /* Darker green for better contrast */
  --accent-orange: #d97706;        /* Darker orange for better contrast */
  --accent-red: #dc2626;           /* Darker red for better contrast */
  --accent-gold: #d97706;          /* Darker gold for better contrast */
  
  /* Light Text Colors */
  --text-primary: #1f2937;         /* Dark text on light background */
  --text-secondary: #6b7280;       /* Medium gray text */
  --text-muted: #9ca3af;           /* Light gray text */
  
  /* Light Component Colors */
  --border-color: #e5e7eb;         /* Light borders */
  --hover-bg: #f3f4f6;             /* Light hover states */
  --input-bg: #f9fafb;             /* Light input backgrounds */
  --dropdown-bg: #ffffff;          /* Light dropdown background */
  --form-color-scheme: light;      /* Native control scheme */
  
  /* Light State Colors */
  --success-color: #059669;
  --success-bg: #d1fae5;
  --success-text: #065f46;
  --success-border: #a7f3d0;
  --success-hover: #047857;
  
  --danger-color: #dc2626;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
  --danger-border: #fecaca;
  --danger-hover: #b91c1c;
  
  --warning-color: #d97706;
  --warning-bg: #fef3c7;
  --warning-text: #92400e;
  --warning-border: #fde68a;
  --warning-hover: #b45309;
  
  --info-color: #2563eb;
  --info-bg: #dbeafe;
  --info-text: #1e40af;
  --info-border: #bfdbfe;
  --info-hover: #1d4ed8;
  
  --accent-color: #7c3aed;
  --accent-bg: #ede9fe;
  --accent-border: #c4b5fd;
  --accent-hover: #6d28d9;
  
  /* Light Glass Effect Colors */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--primary-bg);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ----- Form Elements ----- */
.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.form-control,
.form-select,
textarea.form-control {
  width: 100%;
  background-color: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  color-scheme: var(--form-color-scheme);
}

.form-control:focus,
.form-select:focus,
textarea.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control[disabled],
.form-select[disabled],
textarea.form-control[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-select {
  appearance: none;
  background-color: var(--input-bg);
  background-image: linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%), linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 13px) calc(50% - 3px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 42px;
}

.form-select option,
.form-select optgroup {
  background-color: var(--dropdown-bg);
  color: var(--text-primary);
}

.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.form-check input[type='checkbox'] {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  appearance: none;
  position: relative;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-check input[type='checkbox']:checked {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
}

.form-check input[type='checkbox']:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 6px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.form-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

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

/* Login Page Styles */
.login-container {
  min-height: 100vh;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.login-container::before {
  display: none;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 25px 50px var(--glass-shadow);
  width: 100%;
  max-width: 450px;
  position: relative;
  z-index: 1;
}

.logo-section {
  text-align: center;
  margin-bottom: 30px;
}

.logo {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 20px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: white;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.school-name {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

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

.form-group {
  margin-bottom: 25px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
}

.form-input {
  width: 100%;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 16px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.btn-primary {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(59, 130, 246, 0.4);
}

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

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--accent-red);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  backdrop-filter: blur(10px);
}

/* Dashboard Layout */
.dashboard-layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
  width: 280px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  height: 100dvh; /* Dynamic viewport height for better mobile support */
  max-height: 100vh;
  max-height: 100dvh;
  overflow-y: auto;
  z-index: 1000;
  transition: transform 0.3s ease;
  padding-bottom: env(safe-area-inset-bottom); /* Account for mobile safe areas */
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

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

.sidebar-subtitle {
  font-size: 12px;
  color: var(--text-secondary);
}

.sidebar-nav {
  flex: 1;
  padding: 20px 0;
}

.nav-section {
  margin-bottom: 32px;
}

.nav-section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  padding: 0 20px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  background: var(--hover-bg);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-blue);
  color: white;
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--accent-purple);
}

.nav-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
  background: var(--hover-bg);
}

/* Mobile Overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-overlay.active {
  opacity: 1;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height */
  max-height: 100vh;
  max-height: 100dvh;
  overflow-x: hidden;
}

.top-header {
  background: var(--secondary-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 4px 0;
}

.header-left p {
  color: var(--text-secondary);
  margin: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.user-profile:hover {
  background: var(--hover-bg);
}

.user-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 14px;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-role {
  font-size: 12px;
  color: var(--text-secondary);
}

.user-profile-dropdown {
  position: relative;
}

.user-profile-dropdown .dropdown-content {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  min-width: 200px;
  padding: 6px 0;
  box-shadow: 0 25px 45px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  z-index: 150;
}

.user-profile-dropdown .dropdown-content.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.2s ease;
}

.dropdown-item i {
  width: 18px;
  text-align: center;
  color: var(--text-secondary);
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.dropdown-divider {
  height: 1px;
  margin: 6px 0;
  background: rgba(255, 255, 255, 0.1);
}

.content-area {
  flex: 1;
  padding: 32px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
}

.stat-icon.blue { background-color: var(--accent-blue); }
.stat-icon.purple { background-color: var(--accent-purple); }
.stat-icon.green { background-color: var(--accent-green); }
.stat-icon.orange { background-color: var(--accent-orange); }
.stat-icon.gold { background-color: #fbbf24; }

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

.stat-change {
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.positive { color: var(--accent-green); }
.stat-change.negative { color: var(--accent-red); }

/* Mobile Responsive Design */
@media (max-width: 1024px) {
  .content-area {
    padding: 24px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
  }
}

@media (max-width: 768px) {
  /* Show mobile menu button */
  .mobile-menu-btn {
    display: block;
  }
  
  /* Hide sidebar by default on mobile */
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }
  
  /* Show sidebar when active */
  .sidebar.mobile-active {
    transform: translateX(0);
  }
  
  /* Show overlay when sidebar is active */
  .mobile-overlay.active {
    display: block;
  }
  
  /* Adjust main content for mobile */
  .main-content {
    margin-left: 0;
  }
  
  /* Mobile header adjustments */
  .top-header {
    padding: 10px 12px;
    flex-wrap: nowrap;
    gap: 6px;
    align-items: center;
  }
  
  .header-left {
    flex: 0 0 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  
  .header-left h1 {
    font-size: 20px;
  }

  /* Hide stacked title/welcome block to reduce header height on mobile */
  .header-title-group {
    display: none;
  }

  .header-right {
    flex: 1 1 auto;
    min-width: 0;
    justify-content: flex-end;
    gap: 4px;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .header-right::-webkit-scrollbar {
    display: none;
  }

  .header-right > * {
    flex-shrink: 0;
  }

  .academic-context-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-right: 0;
    padding: 0;
    border-radius: 6px;
    background: transparent;
    flex-wrap: nowrap;
    width: auto;
    display: none;
  }

  .academic-context-controls .context-select {
    width: auto;
    min-width: 120px;
    max-width: 170px;
    padding: 4px 8px;
    font-size: 11px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
  }

  .context-column {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: auto;
    max-width: 180px;
  }

  .context-label {
    font-size: 11px;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .theme-toggle {
    width: 52px;
    height: 26px;
    border-radius: 14px;
    border-width: 1.25px;
  }

  .theme-toggle-slider {
    width: 20px;
    height: 20px;
    top: 3px;
    left: 3px;
  }

  .theme-toggle-icon {
    font-size: 10px;
  }

  [data-theme="light"] .theme-toggle-slider {
    transform: translateX(26px);
  }
  
  /* Hide user info text on mobile */
  .user-info {
    display: none;
  }
  
  /* Mobile content area */
  .content-area {
    padding: 16px;
  }

  .main-content > .content {
    padding: 16px;
  }
  
  /* Mobile stats grid */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .stat-card {
    padding: 20px;
  }
  
  .stat-value {
    font-size: 28px;
  }
}

@media (max-width: 480px) {
  .top-header {
    padding: 8px 10px;
  }
  
  .header-left h1 {
    font-size: 18px;
  }

  .header-right {
    padding-bottom: 2px;
    gap: 4px;
  }

  .academic-context-controls {
    padding: 0;
    gap: 4px;
  }

  .academic-context-controls .context-select {
    width: auto;
    min-width: 110px;
    max-width: 160px;
    font-size: 11px;
    padding: 4px 8px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
  }
  
  .content-area {
    padding: 12px;
  }

  .main-content > .content {
    padding: 12px;
  }
  
  .stat-card {
    padding: 16px;
  }
  
  .stat-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
  
  .stat-value {
    font-size: 24px;
  }
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.chart-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
}

.chart-header {
  margin-bottom: 20px;
}

.chart-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--accent-blue);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }
.mt-4 { margin-top: 16px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 16px; }
.hidden { display: none; }

/* Logout Button */
.logout-btn {
  background: linear-gradient(135deg, var(--accent-red), #dc2626);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.logout-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Theme Toggle Styles */
.theme-toggle {
  position: relative;
  width: 64px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  backdrop-filter: blur(10px);
  user-select: none;
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  background: linear-gradient(135deg, var(--accent-blue-light), var(--accent-blue));
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.theme-toggle-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, #ffffff, #f0f0f0);
  border-radius: 50%;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  z-index: 2;
}

[data-theme="light"] .theme-toggle-slider {
  transform: translateX(32px);
  background: linear-gradient(135deg, #ffffff, #f8f9fa);
}

.theme-toggle-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0.6;
}

.theme-toggle-icon.sun {
  right: 6px;
}

.theme-toggle-icon.moon {
  left: 6px;
}

[data-theme="light"] .theme-toggle-icon.sun {
  opacity: 1;
  color: #FF8F00;
}

[data-theme="light"] .theme-toggle-icon.moon {
  opacity: 0.3;
}

[data-theme="light"] .theme-toggle {
  background: linear-gradient(135deg, #FFA726, #FFB74D);
}

[data-theme="light"] .theme-toggle:hover {
  background: linear-gradient(135deg, #FFB74D, #FFA726);
}

/* Header Right Adjustments */
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Floating Theme Toggle for Login Page */
.theme-toggle-floating {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  width: 56px;
  height: 28px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

[data-theme="light"] .theme-toggle-floating {
  background: rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

/* Prevent theme toggle text selection */
.theme-toggle * {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* Debug styles for theme toggle */
.theme-toggle[data-debug="true"] {
  border: 2px solid red !important;
}

/* Global box-sizing */
* {
  box-sizing: border-box;
}

/* Light theme specific overrides */
[data-theme="light"] .sidebar {
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .glass-card {
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .stat-card {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .stat-card:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .chart-card {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .btn-primary {
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

[data-theme="light"] .btn-primary:hover {
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

/* Assignment System Styles */
.main-content {
    padding: 0;
    background: var(--primary-bg);
    min-height: 100vh;
}

.main-content > .content {
    padding: 20px 24px 24px;
}

.page-header {
    background: var(--secondary-bg);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.page-title {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-title i {
    color: var(--accent-blue);
}

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

.content-card {
    background: var(--secondary-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
}

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

.card-body {
    padding: 24px;
}

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

/* Stats Grid for Assignment Pages */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.stat-icon.blue { background: var(--accent-blue); }
.stat-icon.green { background: var(--accent-green); }
.stat-icon.orange { background: var(--accent-orange); }
.stat-icon.purple { background: var(--accent-purple); }
.stat-icon.red { background: var(--accent-red); }

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--accent-blue);
    color: white;
}

.btn.btn-primary,
.btn.btn-secondary {
    width: auto;
    padding: 12px 18px;
    border-radius: 10px;
    box-shadow: none;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--hover-bg);
}

.btn-outline-primary {
    background: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
}

.btn-outline-primary:hover {
    background: var(--accent-blue);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    line-height: 1.4;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

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

.form-input::placeholder {
    color: var(--text-muted);
}

.form-select {
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    padding-right: 44px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 12px;
}

.form-select::-ms-expand {
    display: none;
}

.form-input:disabled,
.form-select:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

textarea.form-input {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon i {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
}

.input-with-icon .form-input {
    padding-left: 44px;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.filter-bar .filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 180px;
}

.filter-bar .filter-group .form-input,
.filter-bar .filter-group .form-select {
    min-width: 200px;
}

.filter-bar .btn {
    align-self: stretch;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    gap: 8px;
}

.form-grid {
    display: grid;
    gap: 20px;
}

.form-grid.two-column {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.form-grid .span-2 {
    grid-column: span 2;
}

@media (max-width: 768px) {
    .form-grid.two-column {
        grid-template-columns: 1fr;
    }

    .form-grid .span-2 {
        grid-column: span 1;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-bar .filter-group {
        width: 100%;
        min-width: 0;
    }

    .filter-bar .filter-group .form-input,
    .filter-bar .filter-group .form-select,
    .filter-bar .btn {
        width: 100%;
        min-width: 0;
    }
}

.dashboard-grid {
    display: grid;
    gap: 24px;
}

.dashboard-grid.two-column {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* Table Styles */
.table-responsive {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

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

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    color: var(--text-primary);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.stat-icon--blue {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.stat-icon--green {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.stat-icon--amber {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-icon--purple {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.table-inline-form {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.table-inline-form form {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.table-inline-form .form-input {
    min-width: 150px;
    padding: 10px 14px;
    font-size: 14px;
}

.table-inline-form .btn-primary,
.table-inline-form .btn-secondary {
    width: auto;
    padding: 10px 18px;
    border-radius: 10px;
}

/* Alert Styles */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
    color: var(--accent-orange);
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
}

/* Badge Styles */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.badge-secondary {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-secondary);
}

/* Risk Watchlist */
.risk-watchlist-card .card-header {
    align-items: center;
}

.risk-watchlist-card .card-meta {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.risk-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.risk-summary .badge {
    font-weight: 600;
    padding: 6px 12px;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
}

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

.risk-row {
    display: flex;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(15, 23, 42, 0.55);
    border-left: 4px solid var(--accent-blue);
    line-height: 1.45;
}

.risk-row.risk-high {
    border-left-color: var(--accent-red);
}

.risk-row.risk-medium {
    border-left-color: var(--accent-orange);
}

.risk-row.risk-low {
    border-left-color: var(--accent-green);
}

.risk-dot {
    margin-top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-blue);
    flex-shrink: 0;
}

.risk-row.risk-high .risk-dot {
    background: var(--accent-red);
}

.risk-row.risk-medium .risk-dot {
    background: var(--accent-orange);
}

.risk-row.risk-low .risk-dot {
    background: var(--accent-green);
}

.risk-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.risk-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.risk-class {
    font-size: 0.72rem;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.risk-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.risk-score {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.82rem;
}

.risk-factor {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 8px;
    background: rgba(148, 163, 184, 0.08);
}

.risk-meta .badge {
    font-size: 0.72rem;
    padding: 4px 10px;
    letter-spacing: 0.05em;
}

.risk-meta span,
.risk-factor span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.empty-state h4 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.empty-state p {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto;
}

/* Assignment Specific Styles */
.assignment-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-top: 12px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-item i {
    color: var(--accent-blue);
}

.assignment-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.filters-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    align-items: end;
}

.filter-actions {
    display: flex;
    gap: 12px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 16px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .assignment-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .filters-form {
        grid-template-columns: 1fr;
    }
    
    .filter-actions {
        flex-direction: column;
    }
}