:root {
  --bg: #111111;
  --header: #000000;
  --ink: #f2f2f2;
  --muted: #9a9a9a;
  --cat: #2b2b2b;
  --accent: #e10600;
  --accent-hover: #ff1a12;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
  --radius: 8px;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.site-header {
  background: var(--header);
  border-bottom: 3px solid var(--accent);
}

.header-top {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 16px 10px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: #fff;
  flex-shrink: 0;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.search-box {
  flex: 1;
  display: flex;
  min-width: 0;
  max-width: 720px;
  margin-left: auto;
}

.search-box input {
  flex: 1;
  min-width: 0;
  height: 40px;
  border: 0;
  border-radius: 4px 0 0 4px;
  padding: 0 14px;
  font: inherit;
  color: #222;
  background: #fff;
  outline: none;
}

.search-box input::placeholder {
  color: #999;
}

.search-btn {
  width: 48px;
  height: 40px;
  border: 0;
  border-radius: 0 4px 4px 0;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.search-btn:hover {
  background: var(--accent-hover);
}

.cat-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  padding: 8px 16px 14px;
  max-width: 1200px;
  margin: 0 auto;
}

.cat-btn {
  height: 40px;
  border: 0;
  border-radius: 6px;
  background: var(--cat);
  color: #fff;
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s;
}

.cat-btn:hover:not(.is-active) {
  background: #3a3a3a;
}

.cat-btn.is-active {
  background: var(--accent);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 16px 56px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  appearance: none;
  border: 0;
  padding: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
  animation: rise 0.45s ease both;
  transition: transform 0.2s ease;
}

.card-link {
  display: block;
  text-decoration: none;
}

.card:hover {
  transform: translateY(-3px);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  overflow: hidden;
  background: #2a2a2a;
  box-shadow: var(--shadow);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.card:hover .thumb img {
  transform: scale(1.04);
}

.duration {
  position: absolute;
  right: 8px;
  bottom: 8px;
  margin: 0;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 0.75rem;
}

.card-title {
  margin: 10px 2px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: #ececec;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 48px 0;
}

.pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid #333;
  border-radius: 8px;
  background: #1c1c1c;
  color: #eee;
  font: inherit;
  cursor: pointer;
}

.page-btn:hover:not(:disabled):not(.is-active) {
  border-color: var(--accent);
  color: #fff;
}

.page-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-ellipsis {
  color: var(--muted);
  padding: 0 4px;
}

/* Detail page */
.topbar,
.topbar-detail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  background: var(--header);
  border-bottom: 3px solid var(--accent);
}

.load-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.82);
  color: #fff;
  z-index: 2;
}

.load-overlay[hidden] {
  display: none;
}

.load-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.load-text {
  margin: 0;
  font-size: 0.95rem;
  color: #ddd;
}

.load-count {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.topbar .brand,
.topbar-detail .brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  letter-spacing: 0.04em;
}

.back-link {
  color: #ddd;
  text-decoration: none;
  font-weight: 500;
}

.back-link:hover {
  color: #fff;
}

.detail-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 56px;
}

.detail-status {
  color: var(--muted);
}

.detail-missing {
  padding: 48px 0;
}

.detail-missing h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(240px, 0.9fr);
  gap: 24px;
  align-items: start;
  animation: rise 0.45s ease both;
}

.video-shell {
  position: relative;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.detail-video #video,
#video {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(70vh, 640px);
  display: block;
  background: #000;
  object-fit: contain;
}

.detail-info h1 {
  margin: 0 0 16px;
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  font-weight: 700;
  line-height: 1.35;
}

.meta-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.meta-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.meta-list strong {
  color: var(--ink);
  font-weight: 600;
}

.player-meta {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 0.9rem;
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

.primary-link:hover {
  background: var(--accent-hover);
}

.related {
  margin-top: 36px;
}

.related h2 {
  margin: 0 0 14px;
  font-size: 1.2rem;
}

.related-grid {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .cat-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header-top {
    flex-wrap: wrap;
    gap: 10px;
  }

  .search-box {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin-left: 0;
  }

  .cat-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .cat-btn {
    height: 36px;
    font-size: 0.82rem;
  }

  .grid,
  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .card-title {
    font-size: 0.84rem;
    min-height: 2.5em;
  }

  main,
  .detail-main {
    padding: 16px 12px 48px;
  }
}