/* ============================================================
   VortexGrab — Main Stylesheet
   ============================================================ */

/* --- Google Fonts & CSS Variables --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette — Dark Theme */
  --bg-primary: #080813;
  --bg-secondary: #0d0d1a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --bg-input: rgba(255,255,255,0.06);
  --bg-glass: rgba(13, 13, 26, 0.75);

  --text-primary: #f0f0ff;
  --text-secondary: #9898ba;
  --text-muted: #5a5a7a;

  --accent-purple: #a855f7;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;

  --gradient-main: linear-gradient(135deg, #a855f7 0%, #3b82f6 50%, #06b6d4 100%);
  --gradient-card: linear-gradient(135deg, rgba(168,85,247,0.1) 0%, rgba(59,130,246,0.1) 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(168,85,247,0.2) 0%, transparent 70%);

  --border-subtle: rgba(255,255,255,0.08);
  --border-accent: rgba(168,85,247,0.3);

  --shadow-card: 0 4px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.05);
  --shadow-glow: 0 0 40px rgba(168,85,247,0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --font-main: 'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
}

/* Light Theme */
body.light-theme {
  --bg-primary: #f0f4ff;
  --bg-secondary: #ffffff;
  --bg-card: rgba(0,0,0,0.03);
  --bg-card-hover: rgba(0,0,0,0.06);
  --bg-input: rgba(0,0,0,0.05);
  --bg-glass: rgba(240,244,255,0.85);
  --text-primary: #0f0f1f;
  --text-secondary: #444466;
  --text-muted: #888899;
  --border-subtle: rgba(0,0,0,0.08);
  --border-accent: rgba(168,85,247,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.05);
  --shadow-glow: 0 0 40px rgba(168,85,247,0.12);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Animated Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.dark-theme #bg-canvas { opacity: 0.5; }
.light-theme #bg-canvas { opacity: 0.15; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent-purple); border-radius: 3px; }

/* --- Typography --- */
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.2; }

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

/* --- Container --- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   THEME TOGGLE
   ============================================================ */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  backdrop-filter: blur(12px);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.theme-toggle:hover { transform: scale(1.1); border-color: var(--accent-purple); }

/* ============================================================
   NOTIFICATIONS
   ============================================================ */
.notification-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 360px;
}

.notification {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  box-shadow: var(--shadow-card);
  animation: slideIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.notification.success { border-left: 3px solid var(--accent-green); }
.notification.error   { border-left: 3px solid #ef4444; }
.notification.info    { border-left: 3px solid var(--accent-blue); }
.notification.warning { border-left: 3px solid var(--accent-yellow); }

.notification-icon { font-size: 20px; flex-shrink: 0; margin-top: 1px; }
.notification-text { flex: 1; }
.notification-title { font-weight: 600; font-size: 14px; margin-bottom: 2px; }
.notification-body  { font-size: 13px; color: var(--text-secondary); }

@keyframes slideIn {
  from { opacity: 0; transform: translateX(100%); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(100%); }
}
.notification.removing { animation: slideOut 0.3s ease forwards; }

/* ============================================================
   HEADER & NAVBAR
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.brand-accent { color: var(--accent-purple); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}
.nav-link.active {
  color: var(--accent-purple);
  background: rgba(168,85,247,0.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-subtle);
  padding: 16px 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.mobile-nav-link {
  display: block;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.mobile-nav-link:hover { color: var(--text-primary); background: var(--bg-card-hover); }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  z-index: 1;
  padding: 100px 24px 80px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 600px;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: -1;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(168,85,247,0.1);
  border: 1px solid rgba(168,85,247,0.3);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-purple);
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: fadeInDown 0.7s ease 0.1s both;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  animation: fadeInDown 0.7s ease 0.2s both;
  line-height: 1.7;
}

/* --- Search Box --- */
.search-box {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto 24px;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 6px 8px 6px 20px;
  gap: 8px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.search-input-wrapper:focus-within {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 4px rgba(168,85,247,0.1);
  background: var(--bg-card);
}

.search-icon { color: var(--text-muted); flex-shrink: 0; }

.url-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 15px;
  padding: 10px 0;
  min-width: 0;
}
.url-input::placeholder { color: var(--text-muted); }

.paste-btn, .clear-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card-hover);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.paste-btn:hover { color: var(--accent-purple); border-color: var(--border-accent); }
.clear-btn { padding: 8px 12px; font-size: 16px; }
.clear-btn:hover { color: #ef4444; border-color: rgba(239,68,68,0.4); }

.fetch-btn {
  background: var(--gradient-main);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 16px 36px;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-display);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(168,85,247,0.4);
}
.fetch-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(168,85,247,0.5);
}
.fetch-btn:active { transform: translateY(0); }
.fetch-btn.loading .btn-text { opacity: 0.5; }
.fetch-btn.loading .btn-spinner { display: block; }
.btn-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* URL Type Badges */
.url-types {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  animation: fadeInUp 0.7s ease 0.4s both;
}
.url-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  cursor: default;
}
.url-badge:hover { border-color: var(--border-accent); color: var(--accent-purple); }

/* ============================================================
   VIDEO INFO SECTION
   ============================================================ */
.video-info-section {
  position: relative;
  z-index: 1;
  padding: 20px 0 40px;
}

.video-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
  animation: fadeInUp 0.4s ease;
}

.thumbnail-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg-card-hover);
}
.video-thumbnail { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumbnail-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.thumbnail-wrapper:hover .thumbnail-overlay { opacity: 1; }
.play-icon { font-size: 40px; color: white; text-shadow: 0 2px 8px rgba(0,0,0,0.6); }
.video-duration-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

.video-card-info { display: flex; flex-direction: column; gap: 12px; }
.video-title { font-size: 20px; font-weight: 700; line-height: 1.3; }
.video-meta { display: flex; flex-wrap: wrap; gap: 16px; }
.meta-item { display: flex; align-items: center; gap: 5px; font-size: 13px; color: var(--text-secondary); }
.meta-item svg { flex-shrink: 0; }

.video-description-wrapper { position: relative; }
.video-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-description.expanded { -webkit-line-clamp: unset; }
.desc-toggle {
  background: none;
  border: none;
  color: var(--accent-purple);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 0;
  margin-top: 4px;
  transition: var(--transition);
}
.desc-toggle:hover { opacity: 0.8; }

/* --- Download Tabs --- */
.download-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 4px;
  margin-bottom: 20px;
  border: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.tab-btn {
  flex: 1;
  min-width: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  border: none;
  background: none;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text-primary); background: var(--bg-card-hover); }
.tab-btn.active {
  background: var(--gradient-main);
  color: white;
  box-shadow: 0 4px 15px rgba(168,85,247,0.3);
}

/* --- Format Grid --- */
.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.format-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.format-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-main);
  opacity: 0;
  transition: var(--transition);
}
.format-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.format-card:hover::before { opacity: 0.04; }
.format-card.recommended { border-color: var(--accent-purple); }

.format-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(168,85,247,0.15);
  color: var(--accent-purple);
}
.format-badge.hd { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.format-badge.fhd { background: rgba(16,185,129,0.15); color: var(--accent-green); }
.format-badge.uhd { background: rgba(245,158,11,0.15); color: var(--accent-yellow); }

.format-resolution { font-size: 22px; font-weight: 800; font-family: var(--font-display); }
.format-info { font-size: 12px; color: var(--text-muted); }
.format-size { font-size: 12px; color: var(--text-secondary); font-weight: 500; }

.format-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.2);
  color: var(--accent-purple);
  border-radius: var(--radius-md);
  padding: 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  margin-top: 4px;
}
.format-download-btn:hover { background: var(--gradient-main); color: white; border-color: transparent; }

/* --- Audio Options --- */
.audio-options { display: flex; flex-direction: column; gap: 24px; }
.options-title { font-size: 16px; font-weight: 600; margin-bottom: 12px; }

.quality-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.quality-card {
  cursor: pointer;
  position: relative;
}
.quality-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.quality-card-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 16px;
  background: var(--bg-card);
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
}
.quality-card:hover .quality-card-content { border-color: var(--border-accent); }
.quality-card input:checked ~ .quality-card-content {
  border-color: var(--accent-purple);
  background: rgba(168,85,247,0.08);
  box-shadow: 0 0 0 3px rgba(168,85,247,0.15);
}
.quality-badge {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--text-primary);
}
.quality-badge.popular { color: var(--accent-purple); }
.quality-badge.premium { color: var(--accent-yellow); }
.quality-label { font-size: 14px; font-weight: 600; }
.quality-desc { font-size: 12px; color: var(--text-muted); }

.format-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.format-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.format-pill:hover { border-color: var(--border-accent); color: var(--accent-purple); }
.format-pill.active { background: var(--gradient-main); color: white; border-color: transparent; }

.download-audio-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--gradient-main);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 18px 36px;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-display);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(168,85,247,0.4);
  align-self: flex-start;
}
.download-audio-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(168,85,247,0.5); }

/* --- Subtitles --- */
.subtitle-options { display: flex; flex-direction: column; gap: 20px; }
.subtitle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  min-height: 80px;
}
.subtitle-loading { display: flex; align-items: center; gap: 10px; color: var(--text-muted); grid-column: 1/-1; }

.subtitle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.subtitle-card:hover { border-color: var(--border-accent); }
.subtitle-lang { font-size: 14px; font-weight: 600; }
.subtitle-type { font-size: 11px; color: var(--text-muted); }
.subtitle-download-btn {
  margin-top: 6px;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.2);
  color: var(--accent-blue);
  border-radius: var(--radius-sm);
  padding: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}
.subtitle-download-btn:hover { background: var(--accent-blue); color: white; }

.subtitle-format-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
}
.subtitle-format-select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}
.subtitle-format-select:focus { border-color: var(--accent-purple); }

.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
}
.toggle-label input { display: none; }
.toggle-switch {
  width: 44px;
  height: 24px;
  background: var(--bg-card-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
}
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}
.toggle-label input:checked ~ .toggle-switch { background: var(--accent-purple); border-color: var(--accent-purple); }
.toggle-label input:checked ~ .toggle-switch::after { transform: translateX(20px); background: white; }

/* --- Thumbnail Download --- */
.thumbnail-quality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.thumbnail-download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: var(--transition);
}
.thumbnail-download-card:hover { border-color: var(--border-accent); }
.thumbnail-preview-img { width: 100%; border-radius: var(--radius-sm); margin-bottom: 10px; }
.thumbnail-quality-label { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.thumbnail-quality-size { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.thumbnail-dl-btn {
  width: 100%;
  background: rgba(6,182,212,0.15);
  border: 1px solid rgba(6,182,212,0.2);
  color: var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.thumbnail-dl-btn:hover { background: var(--accent-cyan); color: white; }

/* --- Progress --- */
.download-progress-section { margin-top: 20px; animation: fadeInUp 0.3s ease; }
.progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-glow);
}
.progress-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.progress-filename { font-size: 14px; font-weight: 600; flex: 1; margin-right: 12px; }
.cancel-download-btn {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
  color: #ef4444;
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.cancel-download-btn:hover { background: #ef4444; color: white; }
.progress-bar-wrapper { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.progress-bar { flex: 1; height: 8px; background: var(--bg-card-hover); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--gradient-main); border-radius: 4px; transition: width 0.3s ease; }
.progress-percent { font-size: 14px; font-weight: 700; min-width: 40px; text-align: right; }
.progress-stats { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); }

/* ============================================================
   PLAYLIST SECTION
   ============================================================ */
.playlist-section {
  padding: 40px 24px;
  position: relative;
  z-index: 1;
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-header.centered { flex-direction: column; align-items: center; text-align: center; }
.section-title {
  font-size: 26px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-subtitle { font-size: 16px; color: var(--text-secondary); margin-top: 8px; }

.playlist-header-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}

.batch-format-row { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.batch-select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
  flex: 1;
  max-width: 260px;
}
.batch-select:focus { border-color: var(--accent-purple); }

.playlist-batch-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.batch-download-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-main);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}
.batch-download-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(168,85,247,0.4); }

.select-all-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.select-all-btn:hover { border-color: var(--border-accent); color: var(--accent-purple); }

.playlist-items { display: flex; flex-direction: column; gap: 10px; }
.playlist-item {
  display: grid;
  grid-template-columns: 30px 140px 1fr auto;
  gap: 14px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: var(--transition);
}
.playlist-item:hover { border-color: var(--border-accent); }
.playlist-item-thumb { border-radius: var(--radius-sm); width: 100%; height: 78px; object-fit: cover; }
.playlist-item-info { display: flex; flex-direction: column; gap: 4px; }
.playlist-item-title { font-size: 14px; font-weight: 600; line-height: 1.3; }
.playlist-item-meta { font-size: 12px; color: var(--text-muted); }
.playlist-item-status { font-size: 13px; font-weight: 600; padding: 4px 10px; border-radius: var(--radius-full); }
.playlist-item-status.pending { background: rgba(168,85,247,0.1); color: var(--accent-purple); }
.playlist-item-status.done { background: rgba(16,185,129,0.1); color: var(--accent-green); }
.playlist-item-status.error { background: rgba(239,68,68,0.1); color: #ef4444; }

.playlist-progress-section { margin-top: 20px; }
.playlist-progress-bar { height: 6px; background: var(--bg-card-hover); border-radius: 3px; overflow: hidden; margin-bottom: 8px; }
.playlist-progress-fill { height: 100%; background: var(--gradient-main); border-radius: 3px; transition: width 0.4s ease; }

/* ============================================================
   QUEUE SECTION
   ============================================================ */
.queue-section { padding: 40px 24px; position: relative; z-index: 1; }
.clear-queue-btn {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
  color: #ef4444;
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}
.clear-queue-btn:hover { background: #ef4444; color: white; }
.queue-list { display: flex; flex-direction: column; gap: 10px; }
.queue-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: var(--transition);
}
.queue-thumb { width: 56px; height: 36px; border-radius: 4px; object-fit: cover; flex-shrink: 0; }
.queue-info { flex: 1; min-width: 0; }
.queue-title { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.queue-format { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.queue-progress { flex: 1; max-width: 200px; }
.queue-progress-bar { height: 4px; background: var(--bg-card-hover); border-radius: 2px; overflow: hidden; }
.queue-progress-fill { height: 100%; background: var(--gradient-main); border-radius: 2px; transition: width 0.3s ease; }
.queue-status { font-size: 12px; color: var(--text-muted); margin-top: 2px; text-align: right; }
.queue-remove-btn { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 16px; transition: var(--transition); padding: 4px; }
.queue-remove-btn:hover { color: #ef4444; }

/* ============================================================
   FEATURES SECTION
   ============================================================ */
.features-section {
  padding: 80px 24px;
  position: relative;
  z-index: 1;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-accent); box-shadow: var(--shadow-glow); }
.feature-card:hover::after { opacity: 1; }
.feature-icon { font-size: 36px; margin-bottom: 16px; display: block; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* ============================================================
   STATS BANNER
   ============================================================ */
.stats-banner {
  background: var(--gradient-main);
  padding: 48px 24px;
  position: relative;
  z-index: 1;
  overflow: hidden;
}
.stats-banner::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='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.stats-row {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.stat-item { flex: 1; text-align: center; padding: 0 24px; }
.stat-number { display: block; font-size: 40px; font-weight: 900; font-family: var(--font-display); color: white; }
.stat-label { font-size: 14px; color: rgba(255,255,255,0.75); font-weight: 500; }
.stat-divider { width: 1px; height: 60px; background: rgba(255,255,255,0.25); flex-shrink: 0; }

/* ============================================================
   HISTORY SECTION
   ============================================================ */
.history-section { padding: 60px 24px; position: relative; z-index: 1; }
.history-actions { display: flex; gap: 10px; }

.history-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover { border-color: var(--border-accent); color: var(--accent-purple); }
.filter-btn.active { background: rgba(168,85,247,0.15); border-color: var(--accent-purple); color: var(--accent-purple); }

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

.history-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 16px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: var(--transition);
  animation: fadeInUp 0.3s ease;
}
.history-item:hover { border-color: var(--border-accent); }
.history-thumb { width: 100%; height: 60px; border-radius: var(--radius-sm); object-fit: cover; }
.history-info { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.history-title { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta { font-size: 12px; color: var(--text-muted); }
.history-type-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.history-type-badge.video { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
.history-type-badge.audio { background: rgba(16,185,129,0.15); color: var(--accent-green); }
.history-type-badge.playlist { background: rgba(245,158,11,0.15); color: var(--accent-yellow); }
.history-actions-row { display: flex; gap: 8px; align-items: center; }
.history-redownload-btn {
  background: var(--gradient-main);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.history-redownload-btn:hover { opacity: 0.85; }
.history-delete-btn {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  border-radius: var(--radius-md);
  padding: 8px;
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
}
.history-delete-btn:hover { border-color: rgba(239,68,68,0.4); color: #ef4444; }

.empty-state { text-align: center; padding: 60px 24px; color: var(--text-muted); }
.empty-icon { font-size: 52px; margin-bottom: 16px; }
.empty-state h3 { font-size: 18px; margin-bottom: 8px; color: var(--text-secondary); }
.empty-state p { font-size: 14px; }

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
  padding: 80px 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-content { display: flex; flex-direction: column; gap: 16px; }
.about-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
.about-links { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.about-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-purple);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.about-link:hover { gap: 12px; opacity: 0.8; }

.about-tech h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.tech-stack { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.tech-badge {
  background: var(--bg-card-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.tech-badge:hover { border-color: var(--border-accent); color: var(--accent-purple); }
.legal-notice {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 24px 30px;
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-tagline { font-size: 14px; color: var(--text-muted); margin-top: 4px; }
.footer-links h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: var(--text-secondary); letter-spacing: 0.5px; text-transform: uppercase; }
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--accent-purple); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid var(--border-subtle); flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 13px; color: var(--text-muted); }
.footer-status { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #ef4444; }
.status-dot.live { background: var(--accent-green); animation: pulse-dot 2s infinite; }

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 440px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  animation: fadeInUp 0.3s ease;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 24px 28px 0; }
.modal-header h3 { font-size: 18px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 20px; cursor: pointer; transition: var(--transition); padding: 4px; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 20px 28px 28px; display: flex; flex-direction: column; gap: 16px; }
.modal-body p { font-size: 14px; color: var(--text-secondary); }
.modal-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.modal-input:focus { border-color: var(--accent-purple); }
.modal-actions { display: flex; gap: 10px; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  background: var(--gradient-main);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary:hover { opacity: 0.9; }
.btn-ghost {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost:hover { border-color: var(--border-accent); color: var(--accent-purple); }
.btn-ghost.danger:hover { border-color: rgba(239,68,68,0.4); color: #ef4444; }

/* --- Spinner --- */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-subtle);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .video-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .quality-cards { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero { padding: 60px 24px 60px; }
  .hero-title { letter-spacing: -1px; }
  .hero-subtitle { font-size: 16px; }
  .stats-row { flex-direction: column; gap: 28px; }
  .stat-divider { width: 60px; height: 1px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .history-item { grid-template-columns: 80px 1fr; }
  .history-actions-row { grid-column: 1/-1; }
  .playlist-item { grid-template-columns: 24px 1fr; }
  .playlist-item-thumb { display: none; }
  .download-tabs { flex-wrap: wrap; }
  .tab-btn { min-width: 80px; font-size: 12px; padding: 10px 12px; }
  .theme-toggle { top: 12px; right: 80px; }
}

@media (max-width: 480px) {
  .search-input-wrapper { flex-wrap: wrap; padding: 8px 12px; }
  .format-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
}