/* -------------------------------------------------------------
 * CORE DESIGN SYSTEM & VARIABLES
 * ------------------------------------------------------------- */
:root {
  /* Common variables */
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --max-width: 1400px;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --glass-bg: rgba(17, 24, 39, 0.75);
  --glass-border: rgba(255, 255, 255, 0.06);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --primary: #ef4444; /* Vibrant Red */
  --primary-hover: #dc2626; /* Crimson */
  --primary-light: rgba(239, 68, 68, 0.15);
  --accent: #ffffff; /* White Accent */
  --accent-hover: #f3f4f6;
  --accent-light: rgba(255, 255, 255, 0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: rgba(239, 68, 68, 0.15);
  --warning: #f59e0b;
  --card-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.6);
  --glow-shadow: 0 0 20px rgba(239, 68, 68, 0.25);
  --scrollbar-thumb: #374151;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(15, 23, 42, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --primary: #dc2626; /* Crimson Red */
  --primary-hover: #b91c1c; /* Deep Red */
  --primary-light: rgba(220, 38, 38, 0.08);
  --accent: #f8fafc; /* Premium White */
  --accent-hover: #e2e8f0;
  --accent-light: rgba(248, 250, 252, 0.15);
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-light: rgba(220, 38, 38, 0.1);
  --warning: #d97706;
  --card-shadow: 0 10px 25px -10px rgba(15, 23, 42, 0.06);
  --glow-shadow: 0 0 20px rgba(220, 38, 38, 0.15);
  --scrollbar-thumb: #cbd5e1;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Helper Classes */
.hidden { display: none !important; }
.col-full { grid-column: 1 / -1 !important; }
.mobile-only { display: none; }

/* -------------------------------------------------------------
 * BUTTONS & INTERACTIVE ELEMENTS
 * ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--glow-shadow);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}
.btn-secondary:hover {
  background-color: var(--glass-bg);
  border-color: var(--primary);
}

.btn-tertiary {
  background: transparent;
  color: var(--text-secondary);
}
.btn-tertiary:hover {
  color: var(--text-primary);
  background-color: var(--primary-light);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background-color: var(--danger-hover);
  transform: translateY(-1px);
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}
.icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

/* -------------------------------------------------------------
 * APP SHELL LAYOUT
 * ------------------------------------------------------------- */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header Styling */
.app-header {
  height: 70px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

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

.logo-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: #ffffff;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.brand-text h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-text span {
  font-size: 0.75rem;
  color: var(--primary);
  font-weight: 600;
  display: block;
}

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

/* Profile Switcher Menu */
.profile-switcher {
  position: relative;
}

.profile-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.profile-btn:hover {
  border-color: var(--primary);
  background-color: var(--glass-bg);
}

.profile-btn .avatar {
  background-color: var(--primary);
  color: #ffffff;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.profile-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  box-shadow: var(--card-shadow);
  border-radius: var(--radius-md);
  width: 210px;
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 110;
}
.profile-menu.show {
  display: flex;
  animation: slideDown var(--transition-fast);
}

.profile-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.profile-menu-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}
.profile-menu-item.active {
  color: var(--primary);
  font-weight: 700;
  background-color: var(--primary-light);
}

/* Light/Dark Toggle Icon Visibility */
[data-theme="dark"] .light-icon { display: block; }
[data-theme="dark"] .dark-icon { display: none; }
[data-theme="light"] .light-icon { display: none; }
[data-theme="light"] .dark-icon { display: block; }

/* Body Elements */
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar Navigation */
.app-sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 16px;
  transition: all var(--transition-normal);
  z-index: 90;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.nav-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding-left: 12px;
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}
.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}
.nav-item.active {
  color: var(--primary);
  background-color: var(--primary-light);
  box-shadow: inset 3px 0 0 var(--primary);
}

.sidebar-footer {
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
  color: var(--text-muted);
}
.sidebar-footer p {
  font-size: 0.8rem;
  font-weight: 600;
}
.sidebar-footer small {
  font-size: 0.7rem;
}

/* Main Workspace Content */
.app-content {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
  background-color: var(--bg-primary);
}

/* -------------------------------------------------------------
 * DASHBOARD VIEW
 * ------------------------------------------------------------- */
.dashboard-welcome {
  margin-bottom: 32px;
}
.dashboard-welcome h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}
.dashboard-welcome p {
  color: var(--text-secondary);
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 36px;
}

.stat-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  padding: 24px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}
.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-light);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.stat-icon.blue { background-color: var(--primary-light); color: var(--primary); }
.stat-icon.green { background-color: var(--accent-light); color: var(--accent); }
.stat-icon.orange { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }

.stat-details h3 {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.stat-details span {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* Category Dashboard Grid */
.section-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.categories-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.course-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}
.course-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.3);
}

.course-card-banner {
  height: 120px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  padding: 20px;
  text-align: center;
}
.course-card-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.85;
  z-index: 1;
}
.course-card-banner.beauty::before { background: linear-gradient(135deg, #ec4899, #8b5cf6); }
.course-card-banner.tailor::before { background: linear-gradient(135deg, #f59e0b, #ec4899); }
.course-card-banner.computer::before { background: linear-gradient(135deg, #3b82f6, #10b981); }

.course-banner-content {
  position: relative;
  z-index: 2;
}
.course-banner-content i {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.course-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.course-card-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.course-progress-container {
  margin-bottom: 24px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.progress-label { color: var(--text-secondary); }
.progress-pct { color: var(--primary); }

.progress-bar-bg {
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(to right, var(--primary), var(--accent));
  border-radius: var(--radius-full);
  width: 0%;
  transition: width var(--transition-slow);
}

.course-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
}
.course-card-footer span {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* -------------------------------------------------------------
 * CATEGORY DETAIL VIEW
 * ------------------------------------------------------------- */
.category-header {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.category-title-info h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.category-title-info p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.category-stats-summary {
  display: flex;
  gap: 24px;
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  padding: 16px 24px;
  border-radius: var(--radius-md);
}
.category-stat-item {
  text-align: center;
}
.category-stat-item span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
}
.category-stat-item strong {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* Filter controls */
.controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.filter-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
}
.filter-group select {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  outline: none;
  cursor: pointer;
}
.filter-group select:focus {
  border-color: var(--primary);
}

/* Video Grid List */
.videos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
}
.video-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-light);
  box-shadow: 0 12px 25px -5px rgba(0, 0, 0, 0.4);
}

.video-thumbnail-wrapper {
  aspect-ratio: 16/9;
  position: relative;
  background-color: #000000;
  overflow: hidden;
}

.video-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}
.video-card:hover .video-thumbnail {
  transform: scale(1.05);
}

.play-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.video-card:hover .play-overlay {
  opacity: 1;
}

.play-trigger-btn {
  background-color: var(--primary);
  color: #ffffff;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.5);
  transform: scale(0.9);
  transition: transform var(--transition-fast);
}
.video-card:hover .play-trigger-btn {
  transform: scale(1);
}

.video-duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background-color: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
}

.video-completed-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background-color: var(--primary);
  color: #ffffff;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
  z-index: 5;
}

.video-card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.video-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
}
.video-difficulty-badge {
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.video-difficulty-badge.beginner { background-color: var(--primary-light); color: var(--primary); }
.video-difficulty-badge.intermediate { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }
.video-difficulty-badge.advanced { background-color: var(--danger-light); color: var(--danger); }

.video-card-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.video-card-body p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

/* -------------------------------------------------------------
 * VIDEO PLAYER VIEW
 * ------------------------------------------------------------- */
.player-page-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.player-main-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.video-wrapper {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #000;
  border: 1px solid var(--glass-border);
  box-shadow: var(--card-shadow);
}
.video-wrapper iframe, .video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.player-info-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--card-shadow);
}

.player-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 16px;
}

.player-title-info h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.player-meta-tags {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}
.player-meta-tags span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}

/* Completion Checkbox */
.completion-wrapper {
  display: flex;
  align-items: center;
}

.completion-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-primary);
  border: 1.5px solid var(--glass-border);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}
.completion-checkbox-label:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.completion-checkbox-label input {
  display: none;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--text-muted);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: transparent;
  transition: all var(--transition-fast);
}

.completion-checkbox-label input:checked + .checkbox-custom {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.completion-checkbox-label.completed {
  border-color: var(--primary);
  color: var(--primary);
  background-color: var(--primary-light);
}

.player-description h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.player-description p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Side Drawer (Tabs for Notes and Comments) */
.player-side-col {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  height: max-content;
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.tab-headers {
  display: flex;
  border-bottom: 1px solid var(--glass-border);
  background-color: var(--bg-tertiary);
}

.tab-btn {
  flex: 1;
  padding: 14px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.tab-btn:hover {
  color: var(--text-primary);
}
.tab-btn.active {
  color: var(--primary);
  background-color: var(--bg-secondary);
  border-bottom: 2px solid var(--primary);
}

.tab-content-panel {
  padding: 20px;
}

/* Notes Pad */
.notes-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.notes-textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 12px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  resize: vertical;
  min-height: 150px;
  outline: none;
  transition: border-color var(--transition-fast);
}
.notes-textarea:focus {
  border-color: var(--primary);
}

/* Comments Section */
.comments-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 4px;
}

.comment-item {
  background-color: var(--bg-primary);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--primary);
}
.comment-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.comment-author { color: var(--primary); }
.comment-date { color: var(--text-muted); }
.comment-text {
  font-size: 0.82rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.comment-form {
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--glass-border);
  padding-top: 12px;
}
.comment-input {
  flex: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  outline: none;
}
.comment-input:focus {
  border-color: var(--primary);
}

/* -------------------------------------------------------------
 * ADMINISTRATION MANAGER VIEW
 * ------------------------------------------------------------- */
.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}
.admin-header h2 {
  font-size: 1.6rem;
  font-weight: 800;
}

/* Analytics Row */
.admin-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

/* Table Card */
.table-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.table-filter-bar {
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.table-search-wrapper {
  position: relative;
  width: 250px;
}
.table-search-wrapper i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.table-search-input {
  width: 100%;
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 8px 12px 8px 36px;
  font-family: var(--font-main);
  font-size: 0.85rem;
  outline: none;
}
.table-search-input:focus {
  border-color: var(--primary);
}

.table-wrapper {
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.admin-table th {
  background-color: var(--bg-tertiary);
  padding: 14px 20px;
  font-weight: 700;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--glass-border);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.admin-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--glass-border);
  vertical-align: middle;
}
.admin-table tr:last-child td {
  border-bottom: none;
}
.admin-table tr:hover td {
  background-color: var(--bg-primary);
}

.table-thumbnail {
  width: 64px;
  aspect-ratio: 16/9;
  border-radius: 4px;
  object-fit: cover;
  background-color: #000;
}

.table-title-col {
  max-width: 240px;
}
.table-video-title {
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}
.table-video-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.table-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: capitalize;
}
.table-badge.beautician { background-color: rgba(236, 72, 153, 0.1); color: #ec4899; }
.table-badge.tailoring { background-color: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.table-badge.computer { background-color: rgba(59, 130, 246, 0.1); color: #3b82f6; }

.table-actions {
  display: flex;
  gap: 8px;
}
.action-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}
.action-btn.edit {
  background-color: var(--primary-light);
  color: var(--primary);
}
.action-btn.edit:hover {
  background-color: var(--primary);
  color: #ffffff;
}
.action-btn.delete {
  background-color: var(--danger-light);
  color: var(--danger);
}
.action-btn.delete:hover {
  background-color: var(--danger);
  color: #ffffff;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}
.empty-state i {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.empty-state p {
  font-size: 0.95rem;
}

/* -------------------------------------------------------------
 * MODAL DIALOGS
 * ------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 460px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-normal);
  overflow: hidden;
}
.modal-overlay.show .modal-card {
  transform: translateY(0) scale(1);
}

.modal-lg {
  max-width: 680px;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--bg-tertiary);
}
.modal-header h2 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
}
.close-modal-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition-fast);
}
.close-modal-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  max-height: 70vh;
  overflow-y: auto;
}
.modal-subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

/* Forms Styling */
.form-group {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.input-icon-wrapper {
  position: relative;
}
.input-icon-wrapper i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
}
.input-icon-wrapper input {
  padding-left: 40px !important;
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font-main);
  font-size: 0.88rem;
  outline: none;
  width: 100%;
  transition: border-color var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.helper-text {
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.helper-text strong {
  color: var(--text-secondary);
}

.error-banner {
  background-color: var(--danger-light);
  color: var(--danger);
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background-color: var(--bg-tertiary);
}

/* Animations */
@keyframes slideDown {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* -------------------------------------------------------------
 * RESPONSIVE ADAPTATIONS
 * ------------------------------------------------------------- */
@media (max-width: 900px) {
  .player-page-layout {
    grid-template-columns: 1fr;
  }
  .admin-stats-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-only {
    display: flex;
  }
  
  .app-sidebar {
    position: fixed;
    top: 70px;
    left: -260px;
    bottom: 0;
    width: 260px;
    height: calc(100vh - 70px);
    transition: left var(--transition-normal);
  }
  .app-sidebar.active {
    left: 0;
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.4);
  }
  
  .app-content {
    padding: 20px;
  }
  
  .category-header {
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
  }
  
  .category-stats-summary {
    width: 100%;
    justify-content: space-around;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 500px) {
  .header-actions .btn span {
    display: none;
  }
  .header-actions .btn {
    padding: 10px;
  }
  .admin-stats-row {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------
 * AUTHENTICATION PAGE LAYOUT
 * ------------------------------------------------------------- */
.auth-page-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--bg-primary);
  padding: 20px;
  transition: all var(--transition-normal);
}

.auth-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  width: 100%;
  max-width: 420px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.auth-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}

.auth-logo .logo-icon {
  width: 52px;
  height: 52px;
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.auth-logo h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.auth-tagline {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--glass-border);
  background-color: var(--bg-primary);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
}

.auth-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 3px solid transparent;
}
.auth-tab-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}
.auth-tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: var(--bg-secondary);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: slideDown var(--transition-fast);
}

/* User Profile Display Header */
.profile-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.profile-display .avatar {
  background-color: var(--primary);
  color: #ffffff;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

/* Local file mode warning banner */
.file-warning-banner {
  background-color: var(--bg-primary);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--warning);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  line-height: 1.5;
}

.file-warning-banner i {
  color: var(--warning);
  font-size: 1.1rem;
  margin-top: 2px;
}

.file-warning-banner a:hover {
  text-decoration: none !important;
}