@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================
   VIRALVAULT DESIGN SYSTEM v2
   Modern, Dual-Theme (Light/Dark)
   ============================================ */

/* CSS Variables - Light Mode (default) */
:root {
  /* Brand Colors */
  --brand-50: #fef2f2;
  --brand-100: #fee2e2;
  --brand-200: #fecaca;
  --brand-300: #fca5a5;
  --brand-400: #f87171;
  --brand-500: #ef4444;
  --brand-600: #dc2626;
  --brand-700: #b91c1c;
  --brand-800: #991b1b;
  --brand-900: #7f1d1d;
  --brand: #ef4444;

  /* Accent Colors (Blue/Cyan) */
  --accent-50: #eff6ff;
  --accent-100: #dbeafe;
  --accent-200: #bfdbfe;
  --accent-300: #93c5fd;
  --accent-400: #60a5fa;
  --accent-500: #3b82f6;
  --accent-600: #2563eb;
  --accent-700: #1d4ed8;
  --accent: #2563eb;

  /* Surface Colors */
  --bg-0: #ffffff;
  --bg-1: #f8fafc;
  --bg-2: #f1f5f9;
  --bg-3: #e2e8f0;
  --bg-elevated: rgba(255,255,255,0.8);

  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-inverse: #f8fafc;

  /* Borders */
  --border-subtle: rgba(226,232,240,0.6);
  --border-default: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.04), 0 1px 1px -1px rgba(0,0,0,0.02);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.03);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 40px rgba(239,68,68,0.12), 0 0 80px rgba(37,99,235,0.08);

  /* Glassmorphism */
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(255,255,255,0.4);
  --glass-shadow: 0 8px 32px 0 rgba(31,38,135,0.07);

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
  --gradient-accent: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 50%, #dc2626 100%);
  --gradient-cool: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);

  /* Transitions */
  --transition-fast: all 0.15s cubic-bezier(0.4,0,0.2,1);
  --transition-base: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: all 0.5s cubic-bezier(0.4,0,0.2,1);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Chart colors */
  --chart-1: #ef4444;
  --chart-2: #3b82f6;
  --chart-3: #10b981;
  --chart-4: #f59e0b;
  --chart-5: #8b5cf6;

  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
  --bg-0: #0f172a;
  --bg-1: #1e293b;
  --bg-2: #334155;
  --bg-3: #475569;
  --bg-elevated: rgba(30,41,59,0.8);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-tertiary: #64748b;
  --text-inverse: #0f172a;

  --border-subtle: rgba(71,85,105,0.4);
  --border-default: #334155;
  --border-strong: #475569;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.2), 0 1px 1px -1px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4), 0 8px 10px -6px rgba(0,0,0,0.2);
  --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(239,68,68,0.2), 0 0 80px rgba(37,99,235,0.1);

  --glass-bg: rgba(15,23,42,0.7);
  --glass-border: rgba(255,255,255,0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0,0,0,0.4);

  --gradient-brand: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

/* ============================================
   BASE STYLES
   ============================================ */

body {
  background: var(--bg-1);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: var(--transition-base);
}

* { scroll-behavior: smooth; }

/* ============================================
   UTILITIES
   ============================================ */

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-strong {
  background: var(--glass-bg);
  backdrop-filter: blur(40px) saturate(200%);
  -webkit-backdrop-filter: blur(40px) saturate(200%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.05);
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-accent {
  background: var(--gradient-cool);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-warm {
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glow effects */
.glow {
  box-shadow: 0 0 20px rgba(239,68,68,0.15), 0 0 60px rgba(239,68,68,0.05);
}

.glow-blue {
  box-shadow: 0 0 20px rgba(37,99,235,0.15), 0 0 60px rgba(37,99,235,0.05);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(2deg); }
  66% { transform: translateY(-10px) rotate(-1deg); }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.05); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes gridMove {
  0% { transform: translateY(0); }
  100% { transform: translateY(40px); }
}

@keyframes gradientFlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.animate-slideUp { animation: slideUp 0.6s cubic-bezier(0.4,0,0.2,1) both; }
.animate-slideIn { animation: slideIn 0.4s cubic-bezier(0.4,0,0.2,1) both; }
.animate-scaleIn { animation: scaleIn 0.4s cubic-bezier(0.4,0,0.2,1) both; }

/* Stagger delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: 0 4px 14px rgba(239,68,68,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239,68,68,0.45);
}

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

.btn-secondary {
  background: var(--bg-2);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}

.btn-secondary:hover {
  background: var(--bg-3);
  border-color: var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: var(--bg-2);
  color: var(--text-primary);
}

.btn-shine::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s ease;
}

.btn-shine:hover::after {
  left: 100%;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-default);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

.card-glass:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-default);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-0);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition-fast);
  outline: none;
}

.input:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

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

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

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.badge-brand {
  background: var(--brand-50);
  color: var(--brand-600);
}

.badge-accent {
  background: var(--accent-100);
  color: var(--accent-700);
}

.badge-success {
  background: #dcfce7;
  color: #15803d;
}

[data-theme="dark"] .badge-brand {
  background: rgba(239,68,68,0.15);
  color: #fca5a5;
}

[data-theme="dark"] .badge-accent {
  background: rgba(37,99,235,0.15);
  color: #93c5fd;
}

/* ============================================
   TOOLTIP
   ============================================ */

.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  padding: 0.375rem 0.75rem;
  background: var(--text-primary);
  color: var(--bg-0);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 100;
}

.tooltip:hover::after {
  opacity: 1;
}

/* ============================================
   DIVIDER
   ============================================ */

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  margin: var(--space-6) 0;
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-1);
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-2);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
}

.theme-toggle:hover {
  background: var(--bg-3);
  color: var(--text-primary);
}

/* ============================================
   TOOL CONTAINER (redesign)
   ============================================ */

.tool-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.tool-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--brand-50);
  color: var(--brand-600);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

[data-theme="dark"] .tool-badge {
  background: rgba(239,68,68,0.15);
  color: #fca5a5;
}

.tool-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.tool-title .highlight {
  color: var(--brand-500);
}

.tool-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Search redesign */
.search-box {
  display: flex;
  gap: var(--space-2);
  background: var(--bg-0);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: 0.5rem;
  transition: var(--transition-base);
  margin-bottom: var(--space-6);
}

.search-box:focus-within {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 4px rgba(239,68,68,0.1);
}

.search-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-btn {
  padding: 0.75rem 1.5rem;
  background: var(--gradient-brand);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
}

.search-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(239,68,68,0.35);
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: var(--transition-base);
}

.stat-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: 1.25rem;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.stat-card .stat-label {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

/* Results */
.results-panel {
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.results-panel .panel-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
}

.results-panel .panel-header h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Video cards */
.video-list {
  display: grid;
  gap: var(--space-4);
}

.video-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.video-item:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
}

.video-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.video-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.video-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.4;
}

.video-channel {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.video-stats {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
}

.video-stats span {
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ============================================
   ADMIN PANEL REDESIGN
   ============================================ */

/* Admin Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
  background: var(--bg-0);
}

/* Sidebar */
.admin-sidebar {
  width: 260px;
  background: var(--bg-1);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 50;
  transition: var(--transition-base);
}

.admin-sidebar .sidebar-brand {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}

.admin-sidebar .sidebar-brand a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.admin-sidebar .sidebar-brand .brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.admin-sidebar .sidebar-nav {
  flex: 1;
  padding: var(--space-4);
  overflow-y: auto;
}

.admin-sidebar .nav-section {
  margin-bottom: var(--space-4);
}

.admin-sidebar .nav-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  padding: 0 var(--space-3);
  margin-bottom: var(--space-2);
}

.admin-sidebar .nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem var(--space-3);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.admin-sidebar .nav-item:hover {
  background: var(--bg-2);
  color: var(--text-primary);
}

.admin-sidebar .nav-item.active {
  background: rgba(239,68,68,0.08);
  color: var(--brand-500);
  font-weight: 600;
}

.admin-sidebar .nav-item.active .nav-icon {
  color: var(--brand-500);
}

.admin-sidebar .nav-icon {
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.admin-sidebar .sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

/* Main Panel */
.admin-main {
  flex: 1;
  margin-left: 260px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Top Bar */
.admin-topbar {
  height: 64px;
  background: var(--bg-0);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: 40;
}

.admin-topbar .page-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.admin-topbar .topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Content Area */
.admin-content {
  flex: 1;
  padding: var(--space-6);
  overflow: auto;
}

/* Dashboard Stats */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.dashboard-card {
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.dashboard-card:hover::before {
  opacity: 1;
}

.dashboard-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-default);
}

.dashboard-card .card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.dashboard-card .card-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.dashboard-card .card-trend {
  font-size: 0.875rem;
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dashboard-card .card-trend.up {
  color: #10b981;
}

.dashboard-card .card-trend.down {
  color: #ef4444;
}

/* Admin Forms */
.admin-form {
  max-width: 800px;
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.admin-form .form-group {
  margin-bottom: var(--space-6);
}

.admin-form .form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.admin-form .form-hint {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* Switches */
.form-switch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  background: var(--bg-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-3);
  border-radius: var(--radius-full);
  transition: 0.3s ease;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: var(--radius-full);
  transition: 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--brand-500);
}

.toggle-switch input:checked + .toggle-slider::after {
  transform: translateX(22px);
}

/* Tables */
.admin-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.admin-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  background: var(--bg-1);
  border-bottom: 1px solid var(--border-subtle);
}

.admin-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.admin-table tr:hover td {
  background: var(--bg-1);
}

/* ============================================
   DOCUMENTATION PAGE REDESIGN
   ============================================ */

.doc-sidebar {
  width: 300px;
  background: var(--bg-0);
  border-right: 1px solid var(--border-subtle);
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 40;
}

.doc-sidebar .doc-brand {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}

.doc-sidebar .doc-brand h2 {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.doc-sidebar .doc-brand p {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.doc-sidebar .doc-nav {
  padding: var(--space-4);
}

.doc-sidebar .doc-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem var(--space-3);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-fast);
  margin-bottom: 0.25rem;
}

.doc-sidebar .doc-nav a:hover {
  background: var(--bg-2);
  color: var(--text-primary);
}

.doc-sidebar .doc-nav a.active {
  background: rgba(239,68,68,0.08);
  color: var(--brand-500);
  font-weight: 600;
}

.doc-content {
  margin-left: 300px;
  padding: var(--space-12) var(--space-8);
  max-width: 800px;
}

.doc-content h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.doc-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: var(--space-12) 0 var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--border-default);
  color: var(--text-primary);
}

.doc-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: var(--space-8) 0 var(--space-3);
  color: var(--brand-500);
  padding-left: var(--space-3);
  border-left: 3px solid var(--brand-500);
}

.doc-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

.doc-content ul,
.doc-content ol {
  margin-left: var(--space-6);
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

.doc-content li {
  margin-bottom: var(--space-2);
}

.doc-content code {
  background: var(--bg-2);
  color: var(--brand-500);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.875em;
  font-family: 'SFMono-Regular', Consolas, monospace;
}

.doc-content pre {
  background: var(--bg-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

.doc-content pre code {
  background: none;
  padding: 0;
}

.doc-alert {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid;
  margin: var(--space-6) 0;
}

.doc-alert.info {
  background: var(--accent-50);
  border-left-color: var(--accent-500);
}

.doc-alert.success {
  background: #f0fdf4;
  border-left-color: #22c55e;
}

[data-theme="dark"] .doc-alert.info {
  background: rgba(37,99,235,0.1);
}

[data-theme="dark"] .doc-alert.success {
  background: rgba(34,197,94,0.1);
}

/* Mobile */
@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }
  .admin-sidebar.open {
    transform: translateX(0);
  }
  .admin-main {
    margin-left: 0;
  }
  .doc-sidebar {
    transform: translateX(-100%);
  }
  .doc-sidebar.open {
    transform: translateX(0);
  }
  .doc-content {
    margin-left: 0;
  }
  .video-item {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   LOADING & TOASTS
   ============================================ */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--bg-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: slideIn 0.3s ease both;
  min-width: 300px;
}

.toast.success {
  border-left: 4px solid #22c55e;
}

.toast.error {
  border-left: 4px solid #ef4444;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--bg-2) 25%, var(--bg-3) 50%, var(--bg-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .tool-title { font-size: 2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .tool-title { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .video-item { grid-template-columns: 1fr; }
  .search-box { flex-direction: column; }
  .dashboard-stats { grid-template-columns: 1fr; }
}