/* ============================================================
   VideoHub Premium Dark Theme — Vanilla CSS
   ============================================================ */

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

/* ---------- Design Tokens ---------- */
:root {
  --bg-base:      #0a0e1a;
  --bg-surface:   #111827;
  --bg-card:      #161d2e;
  --bg-card-hover:#1c2540;
  --border:       rgba(255,255,255,.07);
  --border-hover: rgba(255,255,255,.15);

  --primary:      #e63757;
  --primary-glow: rgba(230,55,87,.35);
  --accent:       #7c3aed;

  --text-1:       #f1f5f9;
  --text-2:       #94a3b8;
  --text-3:       #64748b;

  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    18px;

  --shadow-card:  0 4px 24px rgba(0,0,0,.45);
  --shadow-hover: 0 12px 40px rgba(0,0,0,.65);
  --transition:   .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: #2a3450; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,14,26,.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

/* Logo */
.logo {
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -.04em;
  color: var(--text-1);
  flex-shrink: 0;
}
.logo span { color: var(--primary); }

/* Nav */
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition), background var(--transition);
}
.nav a:hover, .nav a.active {
  color: var(--text-1);
  background: rgba(255,255,255,.07);
}

/* Search */
.search-form {
  margin-left: auto;
  display: flex;
  gap: 8px;
}
.search-input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-1);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  width: 220px;
  outline: none;
  transition: border-color var(--transition), width var(--transition);
}
.search-input:focus { border-color: var(--primary); width: 280px; }
.search-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition);
}
.search-btn:hover { opacity: .85; }

/* ============================================================
   LAYOUT
   ============================================================ */
.layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
}
.layout.full { grid-template-columns: 1fr; }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1em;
  background: var(--primary);
  border-radius: 99px;
  margin-right: 10px;
  vertical-align: middle;
}
.section-more {
  margin-left: auto;
  font-size: .8rem;
  color: var(--primary);
  font-weight: 500;
}
.section-more:hover { text-decoration: underline; }

/* ============================================================
   VIDEO GRID
   ============================================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.video-grid.large {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

/* Video Card */
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-hover);
}

.card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-surface);
}
.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.video-card:hover .card-thumb img { transform: scale(1.07); }

.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.8) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-card:hover .card-overlay { opacity: 1; }

.play-btn {
  width: 52px;
  height: 52px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 8px var(--primary-glow);
  transition: transform .2s;
}
.play-btn:hover { transform: scale(1.1); }
.play-btn svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }

.hot-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 99px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.server-count {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,.7);
  color: var(--text-2);
  font-size: .7rem;
  padding: 2px 8px;
  border-radius: 99px;
}

.card-body { padding: 12px; flex: 1; }
.card-title {
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text-1);
  margin-bottom: 6px;
  transition: color var(--transition);
}
.video-card:hover .card-title { color: var(--primary); }

.card-meta {
  font-size: .75rem;
  color: var(--text-3);
  display: flex;
  gap: 10px;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar { display: flex; flex-direction: column; gap: 28px; }

.widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.widget-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: .875rem;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -.01em;
}
.widget-body { padding: 12px; }

.cat-list { display: flex; flex-direction: column; gap: 4px; }
.cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  color: var(--text-2);
  transition: background var(--transition), color var(--transition);
}
.cat-item:hover { background: rgba(255,255,255,.06); color: var(--text-1); }
.cat-count {
  background: rgba(255,255,255,.08);
  border-radius: 99px;
  padding: 1px 8px;
  font-size: .7rem;
}

/* ============================================================
   HOT VIDEOS ROW (Scrollable)
   ============================================================ */
.hot-row {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}
.hot-row::-webkit-scrollbar { display: none; }
.hot-card {
  flex-shrink: 0;
  width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition);
}
.hot-card:hover { transform: translateY(-3px); }
.hot-thumb { aspect-ratio: 16/9; overflow: hidden; }
.hot-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.hot-card:hover .hot-thumb img { transform: scale(1.06); }
.hot-body { padding: 8px; }
.hot-title {
  font-size: .75rem;
  font-weight: 600;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   VIDEO PLAYER PAGE
   ============================================================ */
.player-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 28px;
}

.player-wrap {
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  box-shadow: var(--shadow-card), 0 0 0 1px var(--border);
  margin-bottom: 20px;
}
.player-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
}
.player-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  color: var(--text-3);
  font-size: .875rem;
  background: #000;
}

/* Loading spinner */
.player-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255,255,255,.1);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* HLS / Iframe mode badges */
.player-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.player-badge--hls {
  background: rgba(34,197,94,.15);
  border: 1px solid rgba(34,197,94,.3);
  color: #4ade80;
}
.player-badge--iframe {
  background: rgba(99,102,241,.15);
  border: 1px solid rgba(99,102,241,.3);
  color: #818cf8;
}


.video-title-h1 {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.3;
  margin-bottom: 12px;
}

.server-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.server-btn {
  padding: 7px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-2);
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.server-btn:hover { border-color: var(--primary); color: var(--text-1); }
.server-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.info-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}
.info-box h3 { font-size: .875rem; color: var(--text-3); margin-bottom: 8px; }
.info-box p  { font-size: .875rem; color: var(--text-2); line-height: 1.7; }

.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tag {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  color: var(--text-2);
  padding: 4px 12px;
  border-radius: 99px;
  font-size: .75rem;
  transition: background var(--transition), color var(--transition);
}
.tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============================================================
   CATEGORY CHIPS
   ============================================================ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.cat-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  transition: all var(--transition);
}
.cat-chip:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px var(--primary-glow);
  transform: translateY(-2px);
}
.cat-chip-name { font-size: .875rem; font-weight: 700; margin-bottom: 4px; }
.cat-chip-count { font-size: .75rem; color: var(--text-3); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination-wrap { margin-top: 32px; display: flex; justify-content: center; }
.pagination-wrap nav { display: flex; gap: 4px; }
.pagination-wrap span, .pagination-wrap a {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: .875rem;
  color: var(--text-2);
  transition: all var(--transition);
}
.pagination-wrap a:hover { border-color: var(--primary); color: var(--text-1); }
.pagination-wrap [aria-current] {
  background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 700;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-3);
}
.empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty h2 { font-size: 1.1rem; color: var(--text-2); }

/* ============================================================
   SEARCH PAGE
   ============================================================ */
.search-page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.search-page-meta { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.search-keyword {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -.02em;
}
.search-count { font-size: .875rem; color: var(--text-3); }
.search-page-form { display: flex; gap: 8px; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--text-3);
  font-size: .8rem;
  margin-top: 64px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .layout { grid-template-columns: 1fr; }
  .player-layout { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .header-inner { padding: 0 16px; gap: 16px; }
  .nav { display: none; }
  .search-input { width: 150px; }
  .search-input:focus { width: 190px; }
  .layout, .player-layout { padding: 16px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}