/* ============================================================
   TTube – Main Stylesheet
   Dark tube-style design · responsive · mobile-first
   ============================================================ */

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  --bg-base:       #0f0f0f;
  --bg-surface:    #1a1a1a;
  --bg-card:       #212121;
  --bg-card-hover: #2a2a2a;
  --bg-overlay:    rgba(0, 0, 0, .55);
  --text-primary:  #f1f1f1;
  --text-secondary:#aaaaaa;
  --text-muted:    #666666;
  --accent:        #ff4444;
  --accent-hover:  #e03333;
  --accent-light:  rgba(255, 68, 68, .15);
  --border:        #2e2e2e;
  --border-light:  #3a3a3a;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     14px;
  --shadow:        0 4px 20px rgba(0,0,0,.45);
  --shadow-card:   0 2px 10px rgba(0,0,0,.3);
  --header-h:      60px;
  --strip-h:       44px;
  --font:          'Inter', system-ui, -apple-system, sans-serif;
  --transition:    .18s ease;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* ── Site Header ──────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: #111;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-icon {
  color: var(--accent);
  font-size: 20px;
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Search */
.search-form {
  flex: 1;
  display: flex;
  max-width: 560px;
}
.search-input {
  flex: 1;
  height: 38px;
  padding: 0 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--accent); }
.search-btn {
  height: 38px;
  width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #fff;
  transition: background var(--transition);
}
.search-btn:hover { background: var(--accent-hover); }

/* Nav links */
.main-nav {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.nav-link {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-surface); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Category Strip ───────────────────────────────────────── */
.category-strip {
  background: #111;
  border-bottom: 1px solid var(--border);
  height: var(--strip-h);
  overflow: hidden;
}
.category-strip-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.category-strip-inner::-webkit-scrollbar { display: none; }

.cat-pill {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  flex-shrink: 0;
}
.cat-pill:hover, .cat-pill.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ── Mobile Nav ───────────────────────────────────────────── */
.mobile-nav {
  position: fixed;
  top: 0;
  left: -280px;
  width: 260px;
  height: 100%;
  background: #111;
  border-right: 1px solid var(--border);
  z-index: 200;
  padding: 70px 0 24px;
  overflow-y: auto;
  transition: left .25s ease;
}
.mobile-nav.open { left: 0; }
.mobile-nav-link {
  display: block;
  padding: 12px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
}
.mobile-nav-link:hover { color: var(--text-primary); background: var(--bg-surface); }
.mobile-nav-divider { border: none; border-top: 1px solid var(--border); margin: 8px 0; }
.mobile-nav-heading {
  padding: 8px 20px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
}

/* Overlay */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 150;
}
.overlay.visible { display: block; }

/* ── Page Heading ─────────────────────────────────────────── */
.page-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
}
.page-heading h1, .page-heading h2 {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
}
.result-count {
  font-size: 14px;
  color: var(--text-muted);
}

/* ── Video Grid ───────────────────────────────────────────── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

/* ── Video Card ───────────────────────────────────────────── */
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-card);
}
.video-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card-thumb-link { display: block; }
.card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}
.thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.video-card:hover .thumb-img { transform: scale(1.05); }

.card-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,.82);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  pointer-events: none;
}

.card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-overlay);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .card-overlay { opacity: 1; }
.play-icon {
  font-size: 40px;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,.6);
}

.card-info {
  padding: 12px 14px 14px;
}
.card-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-title a:hover { color: var(--accent); }
.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.card-dot { font-size: 10px; }

/* ── Pagination ───────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.page-numbers { display: flex; gap: 4px; }
.page-btn, .page-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  transition: all var(--transition);
}
.page-btn:hover, .page-num:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.page-num.current {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.page-btn.disabled {
  opacity: .4;
  pointer-events: none;
}
.page-ellipsis {
  display: inline-flex;
  align-items: center;
  padding: 0 4px;
  color: var(--text-muted);
}

/* ── Watch Page ───────────────────────────────────────────── */
.watch-container {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 28px;
  align-items: start;
}
.watch-main { min-width: 0; }

/* Player */
.player-wrapper {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.player-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.player-unavailable {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* Video info */
.video-info {
  margin-top: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.video-title {
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 700;
  line-height: 1.35;
}
.video-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}
.video-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-secondary);
  font-size: 14px;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  align-items: center;
  gap: 5px;
}
.stat-date { color: var(--text-muted); }

/* Action buttons */
.video-actions {
  display: flex;
  gap: 10px;
}
.btn-like, .btn-share {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
}
.btn-like:hover, .btn-share:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.btn-like.liked {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

/* Tags */
.video-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.tag-pill {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.tag-pill:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Description */
.video-description {
  margin-top: 14px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  max-height: 80px;
  overflow: hidden;
  position: relative;
}
.video-description.expanded { max-height: none; }
.desc-toggle {
  display: inline-block;
  margin-top: 6px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}
.desc-toggle:hover { color: var(--accent); }

/* Models in watch page */
.video-models-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.section-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.models-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.model-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 30px;
  transition: all var(--transition);
}
.model-chip:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}
.model-chip-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-card);
}
.model-chip-name { font-size: 14px; font-weight: 500; }

/* Related sidebar */
.watch-sidebar { min-width: 0; }
.related-list { display: flex; flex-direction: column; gap: 12px; }
.related-item {
  display: flex;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.related-item:hover { background: var(--bg-surface); }
.related-thumb {
  position: relative;
  flex-shrink: 0;
  width: 140px;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 6px;
  overflow: hidden;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.related-duration {
  position: absolute;
  bottom: 4px;
  right: 4px;
  background: rgba(0,0,0,.82);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
}
.related-info { flex: 1; min-width: 0; }
.related-title {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-views {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Model Hero ───────────────────────────────────────────── */
.model-hero {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.model-avatar-wrap {
  flex-shrink: 0;
}
.model-avatar-lg {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-light);
}
.model-name {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 700;
}
.model-video-count {
  margin-top: 4px;
  font-size: 14px;
  color: var(--text-muted);
}
.model-description {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.65;
}

/* ── Search Page ──────────────────────────────────────────── */
.search-hero-form {
  margin: 24px 0 32px;
}
.search-hero-inner {
  display: flex;
  max-width: 640px;
  margin: 0 auto;
}
.search-hero-input {
  flex: 1;
  height: 48px;
  padding: 0 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
}
.search-hero-input:focus { border-color: var(--accent); }
.search-hero-btn {
  height: 48px;
  padding: 0 22px;
  background: var(--accent);
  border: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  transition: background var(--transition);
}
.search-hero-btn:hover { background: var(--accent-hover); }

.search-tips {
  max-width: 480px;
  margin: 0 auto;
  padding: 32px 0;
}
.search-tips h2 {
  font-size: 18px;
  margin-bottom: 14px;
  color: var(--text-secondary);
}
.search-tips ul { display: flex; flex-direction: column; gap: 10px; }
.search-tips li {
  font-size: 14px;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
}
.search-tips li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── Empty & Error States ─────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state p { font-size: 16px; margin-bottom: 16px; }

.error-404 {
  text-align: center;
  padding: 80px 20px;
}
.error-404 h1 { font-size: 36px; margin-bottom: 16px; }

/* ── Button ───────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  padding: 10px 22px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: background var(--transition);
  border: none;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }

/* ── Categories Page ──────────────────────────────────────── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}
.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.category-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--bg-card-hover);
}
.category-card-icon {
  font-size: 32px;
}
.category-card-name {
  font-size: 15px;
  font-weight: 600;
}
.category-card-count {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Models Page ───────────────────────────────────────────── */
.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
}
.model-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.model-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--bg-card-hover);
}
.model-card-avatar-wrap {
  flex-shrink: 0;
}
.model-card-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-light);
  transition: border-color var(--transition);
}
.model-card:hover .model-card-avatar {
  border-color: var(--accent);
}
.model-card-name {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}
.model-card-count {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: #111;
  border-top: 1px solid var(--border);
  padding: 48px 16px 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 12px; }
.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 280px;
}
.footer-links h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-admin-link a {
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-admin-link a:hover { color: var(--text-primary); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1100px) {
  .watch-container {
    grid-template-columns: 1fr;
  }
  .watch-sidebar {
    border-top: 1px solid var(--border);
    padding-top: 24px;
  }
  .related-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
  }
  .related-item { flex-direction: column; }
  .related-thumb { width: 100%; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .search-form { max-width: none; }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand { grid-column: 1/-1; }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .video-grid  { grid-template-columns: 1fr 1fr; gap: 10px; }
  .card-info   { padding: 8px 10px 10px; }
  .card-title  { font-size: 13px; }

  .video-meta-row { flex-direction: column; align-items: flex-start; }
  .model-hero { flex-direction: column; text-align: center; }
}

@media (max-width: 360px) {
  .video-grid { grid-template-columns: 1fr; }
}