/* =====================================================
   ASHRAF EL SAKKA PLATFORM — Custom CSS (RTL)
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&family=Tajawal:wght@300;400;500;700;800&display=swap');

:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --primary-light: #ebf5ff;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --dark-bg: #0f172a;
  --dark-card: #1e293b;
  --dark-border: #334155;
  --sidebar-width: 280px;
  --header-height: 70px;

  /* ── Semantic tokens (light mode defaults) ── */
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --input-bg: #f8fafc;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --page-bg: #f1f5f9;
  --hover-bg: #f8fafc;
}

/* ── Dark theme overrides (toggled via class on <html>) ── */
.dark-theme {
  --card-bg: #1e293b;
  --card-border: #334155;
  --input-bg: #0f172a;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: #334155;
  --page-bg: #0f172a;
  --hover-bg: #0f172a;
}

/* ── Missing-students card dark/light compatibility ── */
.missing-student-card {
  background: var(--card-bg) !important;
  border-color: var(--border-color) !important;
  transition: box-shadow 0.2s, transform 0.15s;
}

.missing-student-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}

/* Select in missing panel */
#hw-missing-list select {
  background: var(--input-bg) !important;
  color: var(--text-primary) !important;
  border-color: var(--border-color) !important;
}

/* Missing panel box */
#hw-missing-panel {
  background: var(--card-bg);
  border-color: #fca5a5;
}

.dark-theme #hw-missing-panel {
  background: rgba(127, 29, 29, 0.15);
  border-color: #7f1d1d50;
}


/* =====================================================
   GLOBAL IMAGE OPTIMIZATION — object-fit: contain
   Ensures ALL uploaded/content images are fully visible,
   never cropped, never stretched, aspect-ratio preserved.
   ===================================================== */

/* ── Base rule: all images in content areas use contain ── */
.card img,
.card-dark img,
.modal-box img,
main img,
section img,
article img,
[id$="-list"] img,
[id$="-grid"] img,
[id$="-preview"] img,
#admin-books-list img,
#admin-student-books-list img,
#admin-videos-list img,
#admin-exams-list img,
#admin-hw-list img,
#admin-courses-grid img,
#student-books-list img,
#homework-list img,
#books-grid img,
#models-grid img {
  object-fit: contain;
  width: 100%;
  height: 100%;
}

/* ── Exceptions: elements that intentionally need cover ── */
/* Gallery items: always fill the frame edge-to-edge */
.gallery-item img,
/* Video thumbnails: should fill the 16:9 black frame */
.aspect-video img,
[class*="aspect-video"] img,
/* Hero background-style images */
.hero-gradient img,
.animate-hero-img,
/* Student dashboard course cover images on cards */
#admin-courses-grid img,
/* Landing page hero / section covers */
.object-cover {
  object-fit: cover !important;
}

/* ── Ensure container integrity: images never overflow ── */
img {
  max-width: 100%;
  display: block;
}

/* ── Book covers: contain within their fixed-ratio boxes ── */
.aspect-\[3\/4\] img,
[style*="aspect-ratio: 3/4"] img,
[style*="aspect-ratio:3/4"] img {
  object-fit: contain;
  background: #f8fafc;
  /* neutral background shows behind letterboxed images */
}

/* ── Admin book cover thumbnail (56×72px strip) ── */
#admin-books-list img {
  object-fit: contain;
  background: #eff6ff;
}

/* ── Dark mode: use dark neutral for letterbox background ── */
html.dark .aspect-\[3\/4\] img,
html.dark #admin-books-list img {
  background: #1e293b;
}



html {
  direction: rtl;
  scroll-behavior: smooth;
}

body {
  font-family: 'Cairo', 'Tajawal', sans-serif;
  background: #f1f5f9;
  color: #1e293b;
  overflow-x: hidden;
  min-height: 100vh;
  zoom: 80%;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #94a3b8;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ---- Sidebar Layout ---- */
.sidebar {
  width: var(--sidebar-width);
  bottom: 0;
  padding-bottom: 80px;
  padding-top: 0;
  position: fixed;
  right: 0;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  border-left: 1px solid #334155;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  overflow-x: hidden;
  transform: translateX(100%);
  /* Start hidden on mobile */
}

.sidebar.open {
  transform: translateX(0);
}

@media (min-width: 1025px) {
  .sidebar {
    transform: translateX(0);
    /* Always show on desktop */
    padding-top: var(--header-height);
    /* Push nav below the fixed top-header */
  }
}

.main-content {
  margin-right: 0;
  min-height: 125vh;
  transition: margin-right 0.3s ease;
  padding-top: var(--header-height);
}

@media (min-width: 1025px) {
  .main-content {
    margin-right: var(--sidebar-width);
  }
}

/* ---- Sidebar Nav Items ---- */
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: #94a3b8;
  border-radius: 12px;
  margin: 4px 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  font-weight: 500;
}

.nav-item:hover,
.nav-item.active {
  background: rgba(26, 86, 219, 0.15);
  color: #60a5fa;
}

.nav-item.active {
  background: rgba(26, 86, 219, 0.25);
  color: #93c5fd;
  border-right: 3px solid #3b82f6;
}

.nav-item svg,
.nav-item .nav-icon {
  font-size: 20px;
  min-width: 24px;
}

/* ---- Cards ---- */
.card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 4px 20px rgba(0, 0, 0, .04);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, .12);
}

.card-dark {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 16px;
}

/* ---- Stat Cards ---- */
.stat-card {
  border-radius: 16px;
  padding: 24px;
  color: white;
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
}

/* ---- Buttons ---- */
.btn-primary {
  background: linear-gradient(135deg, #1a56db, #1e429f);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26, 86, 219, 0.35);
}

.btn-secondary {
  background: #f1f5f9;
  color: #1e293b;
  border: 1px solid #e2e8f0;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-danger {
  background: #fef2f2;
  color: #ef4444;
  border: 1px solid #fecaca;
  padding: 8px 16px;
  border-radius: 8px;
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-danger:hover {
  background: #ef4444;
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: 'Cairo', sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

/* ---- Form Inputs ---- */
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-family: 'Cairo', sans-serif;
  font-size: 15px;
  color: #1e293b;
  background: #f8fafc;
  transition: border-color 0.2s, box-shadow 0.2s;
}

/* Force native OS dropdown popup on all selects
   Tailwind CDN injects appearance:none via JS after page load,
   which converts selects to DOM-rendered and the fixed sidebar covers options */
select,
select.form-input {
  -webkit-appearance: auto !important;
  -moz-appearance: auto !important;
  appearance: auto !important;
}

select.form-input option {
  padding: 8px;
  direction: rtl;
  text-align: right;
  color: inherit;
  background: inherit;
}

.form-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: white;
}

.form-label {
  display: block;
  font-weight: 600;
  color: #374151;
  margin-bottom: 6px;
  font-size: 14px;
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
}

.badge-blue {
  background: #eff6ff;
  color: #1d4ed8;
}

.badge-green {
  background: #f0fdf4;
  color: #16a34a;
}

.badge-red {
  background: #fef2f2;
  color: #dc2626;
}

.badge-yellow {
  background: #fefce8;
  color: #ca8a04;
}

.badge-gray {
  background: #f1f5f9;
  color: #475569;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: white;
  border-radius: 20px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  transform: scale(0.95);
  transition: transform 0.2s;
  direction: rtl;
}

.modal-overlay.open .modal-box {
  transform: scale(1);
}

/* ---- Tables ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: #f8fafc;
  padding: 12px 16px;
  text-align: right;
  font-weight: 700;
  color: #475569;
  font-size: 13px;
  border-bottom: 2px solid #e2e8f0;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #f1f5f9;
  font-size: 14px;
  color: #374151;
}

.data-table tr:hover td {
  background: #f8fafc;
}

/* ---- Toast Notifications ---- */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: white;
  border-radius: 12px;
  padding: 16px 20px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  animation: slideInLeft 0.3s ease;
  border-right: 5px solid;
  direction: rtl;
  color: #1e293b;
  font-weight: 600;
}

.toast.success {
  border-color: #10b981;
  background: #f0fdf4;
  color: #065f46;
}

.toast.error {
  border-color: #ef4444;
  background: #fef2f2;
  color: #991b1b;
}

.toast.info {
  border-color: #3b82f6;
  background: #eff6ff;
  color: #1e40af;
}

/* Dark Mode Toasts */
html.dark .toast {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

html.dark .toast.success {
  background: #064e3b;
  color: #a7f3d0;
  border-color: #10b981;
}

html.dark .toast.error {
  background: #7f1d1d;
  color: #fecaca;
  border-color: #ef4444;
}

html.dark .toast.info {
  background: #1e3a8a;
  color: #bfdbfe;
  border-color: #3b82f6;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ---- Progress Bar ---- */
.progress-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 50px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #1a56db, #3b82f6);
  border-radius: 50px;
  transition: width 0.6s ease;
}

/* ---- Video Player ---- */
.video-container {
  position: relative;
  background: #000;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-container video {
  width: 100%;
  height: 100%;
}

/* Plyr YouTube embed — standard 16:9, click-proof */
.plyr__video-wrapper.plyr__video-embed {
  position: relative !important;
  aspect-ratio: 16 / 9 !important;
}

.plyr__video-wrapper.plyr__video-embed iframe {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
}

/* ---- Anti-Piracy Dynamic Watermark ---- */
.watermark-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  /* CRITICAL: never block player controls */
  overflow: hidden;
  z-index: 20;
}

.dynamic-watermark {
  position: absolute;
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
  font-weight: 700;
  font-family: 'Cairo', sans-serif;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  user-select: none;
  white-space: nowrap;
  letter-spacing: 0.5px;
  /* Use top/left transitions — these work with %-based positioning */
  transition: top 4s linear, left 4s linear;
  top: 10%;
  left: 10%;
}

/* ---- Notification Bell ---- */
.notif-bell {
  position: relative;
  cursor: pointer;
}

.notif-badge {
  position: absolute;
  top: -6px;
  left: -6px;
  background: #ef4444;
  color: white;
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.2);
  }
}

/* ---- Leaderboard ---- */
.rank-gold {
  color: #f59e0b;
}

.rank-silver {
  color: #94a3b8;
}

.rank-bronze {
  color: #b45309;
}

.rank-1 {
  background: linear-gradient(135deg, #FFF9C4, #FFF176);
  border: 2px solid #f59e0b;
}

.rank-2 {
  background: linear-gradient(135deg, #F5F5F5, #E0E0E0);
  border: 2px solid #9e9e9e;
}

.rank-3 {
  background: linear-gradient(135deg, #FFE8D6, #FFCCBC);
  border: 2px solid #b45309;
}

/* ---- Section Animations ---- */
.section-panel {
  display: none;
}

.section-panel.active {
  display: block;
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Landing Page Hero ---- */
.hero-gradient {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e429f 100%);
  position: relative;
  overflow: hidden;
}

.hero-gradient::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='10'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ---- Gallery Grid ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.gallery-item {
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.gallery-item:hover {
  transform: scale(1.03);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- File Upload ---- */
.file-drop {
  border: 2px dashed #cbd5e0;
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.file-drop:hover,
.file-drop.dragover {
  border-color: #3b82f6;
  background: #eff6ff;
}

/* ---- Quiz / Exam ---- */
.quiz-option {
  padding: 14px 20px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 15px;
}

.quiz-option:hover {
  border-color: #3b82f6;
  background: #eff6ff;
}

.quiz-option.selected {
  border-color: #3b82f6;
  background: #eff6ff;
  color: #1d4ed8;
  font-weight: 600;
}

.quiz-option.correct {
  border-color: #10b981;
  background: #f0fdf4;
  color: #065f46;
}

.quiz-option.wrong {
  border-color: #ef4444;
  background: #fef2f2;
  color: #991b1b;
}

/* ---- Loading Spinner ---- */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #e2e8f0;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: #94a3b8;
}

.empty-state svg {
  margin: 0 auto 16px;
  opacity: 0.4;
}

/* ---- Header ---- */
.top-header {
  height: var(--header-height);
  background: white;
  border-bottom: 1px solid #e2e8f0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  /* above sidebar z-40 so header always on top */
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
}

/* ---- Q&A Thread ---- */
.qa-thread {
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  overflow: hidden;
}

.qa-question {
  padding: 20px;
  background: #f8fafc;
}

.qa-answer {
  padding: 20px;
  background: white;
  border-top: 1px solid #e2e8f0;
}

.qa-answer-badge {
  background: linear-gradient(135deg, #1a56db, #1e429f);
  color: white;
  padding: 2px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
}

/* ---- Responsive: Tablet ---- */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-right: 0 !important;
  }

  .top-header {
    right: 0 !important;
    width: 100% !important;
  }
}

/* ---- Responsive: Mobile ---- */
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .main-content {
    padding: 12px;
    padding-top: calc(var(--header-height) + 12px);
  }

  .top-header {
    padding: 0 12px;
    height: var(--header-height);
  }

  .stat-card {
    padding: 14px;
  }

  .card {
    border-radius: 14px;
  }

  .modal-box {
    padding: 18px;
    margin: 10px;
    max-height: 90vh;
    width: calc(100% - 20px);
  }

  /* Course video modal: fix grid on mobile */
  #add-course-video-modal .grid-cols-3,
  #add-course-video-modal .grid-cols-2 {
    grid-template-columns: 1fr !important;
  }

  #add-course-video-modal .col-span-2 {
    grid-column: span 1 !important;
  }

  /* Grid adjustments (Targeted) */
  #admin-courses-grid,
  #landing-courses-grid,
  #books-grid,
  #features-grid {
    grid-template-columns: 1fr !important;
  }

  /* Table scroll */
  .overflow-x-auto {
    -webkit-overflow-scrolling: touch;
  }

  .data-table {
    font-size: 13px;
  }

  .data-table th,
  .data-table td {
    padding: 8px 10px;
    white-space: nowrap;
  }

  /* Flex alignment issues fixed by removing global wrap */
  .flex.items-start {
    gap: 8px;
  }

  /* Buttons */
  .btn-primary,
  .btn-secondary,
  .btn-success,
  .btn-danger {
    padding: 8px 14px;
    font-size: 13px;
  }

  /* Typography */
  h2 {
    font-size: 1.25rem !important;
  }

  h3 {
    font-size: 1rem !important;
  }

  /* Form inputs slightly bigger for touch */
  .form-input {
    padding: 10px 14px;
    font-size: 15px;
    min-height: 44px;
  }

  select.form-input {
    min-height: 44px;
    appearance: auto !important;
    -webkit-appearance: auto !important;
    -moz-appearance: auto !important;
  }

  /* Gallery mobile grid */
  .gallery-item {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
  }

  /* Video player */
  .aspect-video {
    aspect-ratio: 16/9;
  }

  /* Toast mobile */
  .toast {
    max-width: calc(100vw - 24px);
    left: 12px;
  }
}

/* ---- Responsive: Small Phones ---- */
@media (max-width: 420px) {
  .main-content {
    padding: 8px;
    padding-top: calc(var(--header-height) + 8px);
  }

  .grid.grid-cols-2 {
    grid-template-columns: 1fr !important;
  }

  .stat-card {
    padding: 12px;
  }

  .card {
    padding: 12px;
  }

  .modal-box {
    padding: 14px;
    margin: 6px;
  }

  h2 {
    font-size: 1.1rem !important;
  }

  .btn-primary,
  .btn-secondary,
  .btn-success,
  .btn-danger {
    padding: 7px 12px;
    font-size: 12px;
  }

  .data-table th,
  .data-table td {
    padding: 6px 8px;
    font-size: 12px;
  }
}

/* Mobile sidebar toggle button */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: white;
  border: 1px solid #e2e8f0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

@media (max-width: 1024px) {
  .mobile-menu-btn {
    display: flex;
  }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
  body {
    background: white;
  }

  .no-print,
  .sidebar,
  .top-header {
    display: none !important;
  }

  .main-content {
    margin: 0 !important;
    padding: 0 !important;
  }
}

html.dark select option {
  background-color: #1e1e1e !important;
  color: #e5e7eb !important;
}

html.dark select.form-input {
  background-color: #1e1e1e !important;
  color: #e5e7eb !important;
  border-color: #444 !important;
}

/* =====================================================
   GLOBAL HIGH-END DARK MODE
   ===================================================== */
html.dark body,
html.dark {
  background: #121212 !important;
  color: #e5e7eb !important;
  color-scheme: dark;
}

html.dark .card,
html.dark .modal-box,
html.dark .section-panel,
html.dark .form-input,
html.dark .top-header,
html.dark .bg-white {
  background-color: #1e1e1e !important;
  border-color: #333 !important;
  color: #e5e7eb !important;
}

html.dark .sidebar {
  background: linear-gradient(180deg, #121212 0%, #1a1a1a 100%) !important;
  border-left-color: #333 !important;
}

/* Typography Overrides */
html.dark .text-slate-800,
html.dark .text-slate-700,
html.dark .text-gray-800,
html.dark .text-gray-700,
html.dark .text-slate-900 {
  color: #f3f4f6 !important;
}

html.dark .text-slate-500,
html.dark .text-slate-600,
html.dark .text-gray-500,
html.dark .text-gray-600,
html.dark .text-slate-400 {
  color: #9ca3af !important;
}

/* Backgrounds & Borders */
html.dark .bg-slate-50,
html.dark .bg-slate-100,
html.dark .bg-gray-50,
html.dark .bg-slate-200 {
  background-color: #262626 !important;
  border-color: #333 !important;
}

html.dark .border-slate-100,
html.dark .border-slate-200,
html.dark .border-gray-200,
html.dark .border-b {
  border-color: #333 !important;
}

/* Tables & Lists */
html.dark .hover\:bg-slate-50:hover,
html.dark .hover\:bg-slate-100:hover,
html.dark .hover\:bg-blue-50:hover {
  background-color: #2a2a2a !important;
}

/* Gradients that break dark mode */
html.dark .bg-gradient-to-r.from-slate-50 {
  background-image: none !important;
  background-color: #1e1e1e !important;
}

/* Specialized Overrides */
html.dark .qa-thread {
  border-color: #333 !important;
}

html.dark .qa-question {
  background-color: #262626 !important;
}

html.dark .qa-answer {
  background-color: #1e1e1e !important;
  border-top-color: #333 !important;
}

html.dark .btn-secondary {
  background-color: #262626 !important;
  color: #e5e7eb !important;
  border-color: #444 !important;
}

html.dark .btn-secondary:hover {
  background-color: #333 !important;
}

/* Keep Primary colors intact, just update any local conflicting logic */
html.dark .nav-item:hover,
html.dark .nav-item.active {
  background: rgba(26, 86, 219, 0.25) !important;
}

/* =====================================================
   YOUTUBE PLYR PLAYER — Anti-Branding Masks
   ===================================================== */
.plyr__video-wrapper {
  position: relative !important;
  z-index: 1 !important;
  overflow: hidden !important;
  background: #000;
}

.plyr__video-wrapper iframe {
  z-index: 1 !important;
}

/* Controls above masks */
.plyr__controls {
  z-index: 200 !important;
}

/* Watermark above everything */
.watermark-wrapper {
  z-index: 999999 !important;
}

/* =====================================================
   EXAM QUIZ OPTIONS (Instant Feedback)
   ===================================================== */
.quiz-option {
  padding: 16px;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  background: white;
  transition: all 0.2s;
  color: #1e293b;
}

.quiz-option.clickable:hover {
  background: #f8fafc;
}

.quiz-state-correct {
  border-color: #10b981 !important;
  background: #ecfdf5 !important;
  color: #047857 !important;
}

.quiz-state-wrong {
  border-color: #ef4444 !important;
  background: #fef2f2 !important;
  color: #b91c1c !important;
}

.quiz-state-disabled {
  opacity: 0.6;
  pointer-events: none;
}

/* Dark Mode Quiz Overrides */
html.dark .quiz-option {
  background: #262626;
  border-color: #444;
  color: #e5e7eb;
}

html.dark .quiz-option.clickable:hover {
  background: #333;
}

html.dark .quiz-state-correct {
  background: rgba(16, 185, 129, 0.15) !important;
  border-color: #10b981 !important;
  color: #34d399 !important;
}

html.dark .quiz-state-wrong {
  background: rgba(239, 68, 68, 0.15) !important;
  border-color: #ef4444 !important;
  color: #f87171 !important;
}


/* =====================================================
   PREMIUM PLYR YOUTUBE PLAYER — Professional Redesign
   Inspired by TutorLMS / Modern E-learning Platforms
   ===================================================== */

/* ---- Poster image (thumbnail shown before play) ---- */
.plyr__poster {
  background-size: cover !important;
  background-position: center !important;
}

/* ---- THE OVERLAID PLAY BUTTON — Big, Solid, Stunning ---- */
.plyr__control--overlaid {
  background-color: #1a2744 !important;
  /* Deep dark navy — fully opaque 100% */
  background: #1a2744 !important;
  /* Force override completely */
  opacity: 1 !important;
  width: 90px !important;
  height: 90px !important;
  border-radius: 50% !important;
  border: none !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0 !important;
  cursor: pointer !important;
  /* Very subtle shadow, no transparency to background */
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5) !important;
  transition: transform 0.2s ease, background-color 0.2s ease !important;

  /* Force it dead center */
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  z-index: 100 !important;
}

.plyr__control--overlaid:hover {
  background-color: #1a56db !important;
  /* Brighter blue on hover */
  background: #1a56db !important;
  transform: translate(-50%, -50%) scale(1.1) !important;
}

.plyr__control--overlaid:active {
  transform: translate(-50%, -50%) scale(0.95) !important;
}

.plyr__control--overlaid svg {
  width: 36px !important;
  height: 36px !important;
  fill: #ffffff !important;
  position: relative !important;
  left: 4px !important;
  /* Optical centering for play triangle */
}

/* Hide the native YouTube play button by ensuring our poster and button are solid */
.plyr.plyr--youtube.plyr--paused .plyr__poster,
.plyr.plyr--youtube.plyr--stopped .plyr__poster {
  opacity: 1 !important;
  z-index: 99 !important;
  background-color: #000 !important;
}

/* ---- Bottom Controls Bar — Sleek Gradient ---- */
.plyr__controls {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.4) 60%, transparent 100%) !important;
  padding: 32px 16px 12px !important;
  border-radius: 0 0 12px 12px !important;
  z-index: 200 !important;
}

/* Control buttons hover state */
.plyr__controls .plyr__control {
  background: transparent !important;
  border-radius: 6px !important;
  transition: background 0.18s ease !important;
}

.plyr__controls .plyr__control:hover {
  background: rgba(255, 255, 255, 0.18) !important;
}

/* ---- Progress / Seek Bar ---- */
.plyr--full-ui input[type=range] {
  color: #3b82f6 !important;
}

.plyr__progress input[type=range]::-webkit-slider-thumb {
  width: 14px !important;
  height: 14px !important;
}

/* ---- Volume Control ---- */
.plyr__volume input[type=range] {
  color: #3b82f6 !important;
}

/* ---- Time display ---- */
.plyr__time {
  font-family: 'Cairo', monospace !important;
  font-size: 13px !important;
  color: rgba(255, 255, 255, 0.9) !important;
}

/* ---- Full Player wrapper border ---- */
.plyr--video {
  border-radius: 12px !important;
  overflow: hidden !important;
  background: #000 !important;
}

/* =========================================================
   HOMEWORK RESPONSIVE RULES
   ========================================================= */

/* Submissions table: horizontally scrollable on small screens */
.card.overflow-hidden {
  overflow-x: auto;
}

/* Mobile padding for section panels */
@media (max-width: 640px) {
  .section-panel {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }

  /* Submissions header buttons stack on mobile */
  #hw-submissions-view .flex.flex-wrap {
    gap: 0.5rem;
  }

  /* Admin homework card action row full-width on very small screens */
  #admin-hw-list .flex.flex-wrap.gap-2.mt-3 button {
    flex: 1 1 calc(33% - 0.5rem);
    min-width: 0;
  }

  /* Student homework page title */
  #section-homework h2 {
    font-size: 1.25rem;
  }
}

/* Ensure the hw submit modal is not wider than the screen */
#hw-submit-modal .modal-box {
  max-width: min(440px, 96vw);
}

/* Resend HW modal mobile fix */
#resend-hw-modal .modal-box {
  max-width: min(440px, 96vw);
  margin: 1rem;
}

/* Hero Image Animation */
@keyframes floatHero {

  0%,
  100% {
    transform: translateY(0) scale(1);
  }

  50% {
    transform: translateY(-12px) scale(1.015);
  }
}

.animate-hero-img {
  animation: floatHero 6s ease-in-out infinite;
  transform-origin: bottom center;
}

/* ═══════════════════════════════════════════════
   Admin Course-Videos Section — Playlist Cards
═══════════════════════════════════════════════ */
.cv-custom-scrollbar::-webkit-scrollbar {
  width: 5px;
}

.cv-custom-scrollbar::-webkit-scrollbar-thumb {
  background: #c7d2fe;
  border-radius: 99px;
}

.cv-custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

/* Compact playlist card */
.cv-playlist-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 12px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background 0.18s, border-color 0.18s, box-shadow 0.18s;
  background: #fff;
}

.cv-playlist-item:hover {
  background: #eef2ff;
  border-color: #c7d2fe;
}

.cv-playlist-item.active {
  background: linear-gradient(135deg, #eef2ff, #e0e7ff);
  border-color: #818cf8;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.cv-playlist-item .cv-thumb {
  width: 64px;
  height: 44px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: #e2e8f0;
}

.cv-playlist-item .cv-thumb-placeholder {
  width: 64px;
  height: 44px;
  border-radius: 8px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cv-playlist-item .cv-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #e2e8f0;
  color: #64748b;
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cv-playlist-item.active .cv-num {
  background: #6366f1;
  color: #fff;
}

.cv-playlist-item .cv-info {
  flex: 1;
  min-width: 0;
}

.cv-playlist-item .cv-info .cv-title {
  font-size: 12px;
  font-weight: 700;
  color: #1e293b;
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.cv-playlist-item.active .cv-info .cv-title {
  color: #4338ca;
}

.cv-playlist-item .cv-info .cv-date {
  font-size: 10px;
  color: #94a3b8;
  margin-top: 2px;
}

/* Dark mode for playlist */
html.dark .cv-playlist-item {
  background: var(--dark-card, #1e293b) !important;
  border-color: #334155 !important;
}

html.dark .cv-playlist-item:hover {
  background: #2a3548 !important;
  border-color: #475569 !important;
}

html.dark .cv-playlist-item.active {
  background: rgba(99, 102, 241, 0.15) !important;
  border-color: #6366f1 !important;
}

html.dark .cv-playlist-item .cv-thumb {
  background: #334155 !important;
}

html.dark .cv-playlist-item .cv-num {
  background: #334155 !important;
  color: #cbd5e1 !important;
}

html.dark .cv-playlist-item.active .cv-num {
  background: #6366f1 !important;
  color: #fff !important;
}

html.dark .cv-playlist-item .cv-info .cv-title {
  color: #f1f5f9 !important;
}

html.dark .cv-playlist-item.active .cv-info .cv-title {
  color: #818cf8 !important;
}

@media (min-width: 1280px) {
  #course-videos-list-wrapper {
    max-height: 680px !important;
  }
}

@media (min-width: 768px) and (max-width: 1279px) {
  #course-videos-list-wrapper {
    max-height: 460px !important;
  }
}

/* Student Videos Playlist — responsive heights */
@media (min-width: 768px) {
  #section-videos #videos-list {
    max-height: 480px !important;
  }
}

@media (min-width: 1280px) {
  #section-videos #videos-list {
    max-height: 680px !important;
  }
}

/* Active lesson row indicator (RTL: border on right) */
.lesson-item-row.border-r-4 {
  border-right: 4px solid #2563eb !important;
  padding-right: calc(0.75rem - 4px);
}

/* Fix: remove white background flash when clicking lesson buttons */
#videos-list button:focus,
#videos-list button:active {
  outline: none;
  background-color: transparent !important;
}


/* =====================================================
   GLOBAL DIM MODE (NAVY BLUE)
   ===================================================== */
html.dim body,
html.dim {
  background: #070c17 !important;
  color: #e5e7eb !important;
  color-scheme: dark;
}

html.dim .card,
html.dim .modal-box,
html.dim .section-panel,
html.dim .form-input,
html.dim .top-header,
html.dim .bg-white {
  background-color: #0d1526 !important;
  border-color: rgba(59, 130, 246, 0.15) !important;
  color: #e5e7eb !important;
}

html.dim .sidebar {
  background: linear-gradient(180deg, #080d1a 0%, #0d1526 60%, #0f1f3a 100%) !important;
  border-left-color: rgba(59, 130, 246, 0.15) !important;
}

html.dim .text-slate-800,
html.dim .text-slate-700,
html.dim .text-gray-800,
html.dim .text-gray-700,
html.dim .text-slate-900 {
  color: #f1f5f9 !important;
}

html.dim .text-slate-500,
html.dim .text-slate-600,
html.dim .text-gray-500,
html.dim .text-gray-600,
html.dim .text-slate-400 {
  color: #94a3b8 !important;
}

html.dim .bg-slate-50,
html.dim .bg-slate-100,
html.dim .bg-gray-50,
html.dim .bg-slate-200 {
  background-color: rgba(255, 255, 255, 0.03) !important;
  border-color: rgba(255, 255, 255, 0.06) !important;
}

html.dim .border-slate-100,
html.dim .border-slate-200,
html.dim .border-gray-200,
html.dim .border-b {
  border-color: rgba(255, 255, 255, 0.06) !important;
}

html.dim select option {
  background-color: #0d1526 !important;
  color: #e5e7eb !important;
}

html.dim select.form-input {
  background-color: #1a2035 !important;
  color: #e5e7eb !important;
  border-color: rgba(255,255,255,0.12) !important;
}

/* =====================================================
   GLOBAL SEPIA MODE (EYE SAVER / READING MODE)
   ===================================================== */
html.sepia body,
html.sepia {
  background: #f4ecd8 !important;
  color: #5c4b37 !important;
}

html.sepia .card,
html.sepia .modal-box,
html.sepia .section-panel,
html.sepia .form-input,
html.sepia .top-header,
html.sepia .bg-white {
  background-color: #fcf9f2 !important;
  border-color: #e6dcc5 !important;
  color: #5c4b37 !important;
}

html.sepia .sidebar {
  background: linear-gradient(180deg, #f0e6d2 0%, #f4ecd8 60%, #fcf9f2 100%) !important;
  border-left-color: #e6dcc5 !important;
}

html.sepia .text-slate-800,
html.sepia .text-slate-700,
html.sepia .text-gray-800,
html.sepia .text-gray-700,
html.sepia .text-slate-900,
html.sepia h1,
html.sepia h2,
html.sepia h3,
html.sepia h4 {
  color: #4a3b2c !important;
}

html.sepia .text-slate-500,
html.sepia .text-slate-600,
html.sepia .text-gray-500,
html.sepia .text-gray-600,
html.sepia .text-slate-400 {
  color: #7a6a58 !important;
}

html.sepia .bg-slate-50,
html.sepia .bg-slate-100,
html.sepia .bg-gray-50,
html.sepia .bg-slate-200 {
  background-color: #f0e6d2 !important;
  border-color: #e6dcc5 !important;
}

html.sepia .border-slate-100,
html.sepia .border-slate-200,
html.sepia .border-gray-200,
html.sepia .border-b {
  border-color: #e6dcc5 !important;
}

html.sepia select option {
  background-color: #fcf9f2 !important;
  color: #5c4b37 !important;
}

/* =====================================================
   SECTION HEIGHT FIX (To prevent layout cutting)
   ===================================================== */
.section-panel {
  min-height: calc(125vh - 70px);
}

/* =====================================================
   CUSTOM SELECT DROPDOWN (replaces native <select>)
   Fixes RTL popup positioning + z-index issues
   ===================================================== */
.csw {
  position: relative;
  width: 100%;
  display: inline-block;
}

.csw-display {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-family: 'Cairo', 'Tajawal', sans-serif;
  font-size: 15px;
  color: #1e293b;
  background: #f8fafc;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 48px;
  box-sizing: border-box;
}

.csw-display:hover {
  border-color: #94a3b8;
}

.csw-display.open {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: white;
}

.csw-arrow {
  flex-shrink: 0;
  transition: transform 0.2s;
  font-style: normal;
  font-size: 12px;
  color: #64748b;
}

.csw-display.open .csw-arrow {
  transform: rotate(180deg);
}

.csw-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  left: 0;
  background: #fff;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.14);
  z-index: 99999;
  max-height: 260px;
  overflow-y: auto;
  overflow-x: hidden;
}

.csw-dropdown.open {
  display: block;
}

.csw-item {
  padding: 10px 16px;
  cursor: pointer;
  font-family: 'Cairo', 'Tajawal', sans-serif;
  font-size: 14px;
  color: #1e293b;
  text-align: right;
  transition: background 0.12s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.csw-item:first-child { border-radius: 10px 10px 0 0; }
.csw-item:last-child  { border-radius: 0 0 10px 10px; }

.csw-item:hover {
  background: #eff6ff;
  color: #1d4ed8;
}

.csw-item.selected {
  background: #eff6ff;
  color: #1d4ed8;
  font-weight: 600;
}

/* Dark mode */
html.dark .csw-display,
html.dim .csw-display {
  background: #1e1e1e;
  color: #e5e7eb;
  border-color: #444;
}

html.dark .csw-display.open,
html.dim .csw-display.open {
  background: #252525;
  border-color: #3b82f6;
}

html.dark .csw-dropdown,
html.dim .csw-dropdown {
  background: #1e1e1e;
  border-color: #444;
}

html.dark .csw-item,
html.dim .csw-item {
  color: #e5e7eb;
}

html.dark .csw-item:hover,
html.dim .csw-item:hover {
  background: rgba(59, 130, 246, 0.15);
  color: #93c5fd;
}

html.dark .csw-item.selected,
html.dim .csw-item.selected {
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

html.dim .csw-display {
  background: #0d1526;
  border-color: rgba(59,130,246,0.3);
}

html.dim .csw-dropdown {
  background: #0d1526;
  border-color: rgba(59,130,246,0.3);
}

html.dim .csw-item:hover,
html.dim .csw-item.selected {
  background: rgba(59, 130, 246, 0.18);
}

/* Sepia mode */
html.sepia .csw-display {
  background: #fcf9f2;
  color: #5c4b37;
  border-color: #c4a882;
}

html.sepia .csw-dropdown {
  background: #fcf9f2;
  border-color: #c4a882;
}

html.sepia .csw-item {
  color: #5c4b37;
}

html.sepia .csw-item:hover,
html.sepia .csw-item.selected {
  background: #f0e6d3;
}