/* ============ GameHub 深色主题（仿 CrazyGames 风格） ============ */
:root {
  --bg: #121319;
  --panel: #1a1c25;
  --card: #20232e;
  --card-hover: #262a37;
  --border: #2e3242;
  --text: #f2f3f8;
  --muted: #9aa0b4;
  --accent: #9b5cff;
  --accent-2: #ec4899;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(155, 92, 255, .14), transparent 60%),
    radial-gradient(900px 400px at 5% 0%, rgba(236, 72, 153, .08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { display: block; }
.hidden { display: none !important; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

/* ---------------- 顶部导航 ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(18, 19, 25, .82);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .5px;
  flex-shrink: 0;
}

.logo img { width: 34px; height: 34px; }
.logo b { color: var(--accent); }

.search {
  flex: 1;
  max-width: 460px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  transition: border-color .2s;
}

.search:focus-within { border-color: var(--accent); }
.search-icon { color: var(--muted); flex-shrink: 0; }

.search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 14px;
}

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

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .2s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 6px 20px rgba(155, 92, 255, .35);
}

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

.btn-ghost:hover { background: var(--card-hover); }

.btn-random {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  flex-shrink: 0;
}

.btn-random:hover { border-color: var(--accent); }

/* ---------------- Hero 区 ---------------- */
.hero {
  display: flex;
  align-items: center;
  gap: 36px;
  padding: 28px 0 36px;
}

.hero-text { flex: 1; min-width: 0; }

.hero-text h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.25;
}

.grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-text p { color: var(--muted); margin: 0 0 22px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats { margin-top: 18px; color: var(--muted); font-size: 14px; }

.hero-card {
  flex-shrink: 0;
  width: 400px;
  max-width: 42vw;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}

.hero-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 14px 40px rgba(155, 92, 255, .25);
}

.hero-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }

.hero-card-info { padding: 14px 16px 16px; }
.hero-card-info b { font-size: 18px; }
.hero-card-info p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------------- 分类标签 ---------------- */
.chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  scroll-behavior: smooth;
}

.chip {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  transition: all .2s;
}

.chip:hover { color: var(--text); border-color: var(--accent); }
.chip.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
}

/* ---------------- 游戏卡片 ---------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .18s, border-color .18s, box-shadow .18s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .4);
}

.thumb {
  position: relative;
  aspect-ratio: 16/10;
  background: #000;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .25s, opacity .25s;
}

.card:hover .thumb img { transform: scale(1.06); opacity: .85; }

.thumb .badge {
  position: absolute;
  top: 8px;
  left: 8px;
}

.play-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  color: #fff;
  background: rgba(10, 10, 16, .45);
  opacity: 0;
  transition: opacity .18s;
}

.card:hover .play-hint { opacity: 1; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: rgba(155, 92, 255, .85);
  backdrop-filter: blur(4px);
}

.card-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
}

.card-name { font-size: 14.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-meta { color: var(--muted); font-size: 12.5px; flex-shrink: 0; }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  padding: 48px 0;
}

/* ---------------- 游戏页 ---------------- */
.game-page { max-width: 1000px; margin: 0 auto; }

.game-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16/10;
  max-height: 76vh;
  background: #000;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.game-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--bg);
  color: var(--muted);
  transition: opacity .4s;
  z-index: 5;
}

.loading.done { opacity: 0; pointer-events: none; }

/* 「点击开始」遮罩 */
.click-play {
  position: absolute;
  inset: 0;
  z-index: 7;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(10, 11, 16, .58);
  backdrop-filter: blur(2px);
  cursor: pointer;
}

.click-play.show { display: flex; }
.click-play.gone { display: none; }

.cp-card { text-align: center; color: #fff; }
.cp-btn { font-size: 17px; padding: 14px 36px; }
.cp-hint { margin: 14px 0 0; color: #c8cdda; font-size: 13.5px; }

.spinner {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin .9s linear infinite;
}

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

.btn-fullscreen {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 6;
  background: rgba(18, 19, 25, .75);
  border: 1px solid var(--border);
  color: #fff;
  padding: 7px 14px;
  font-size: 13px;
  backdrop-filter: blur(6px);
}

.btn-fullscreen:hover { border-color: var(--accent); }

.game-info { margin-top: 22px; }

.game-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.game-head h1 { margin: 0; font-size: 26px; }
.meta { color: var(--muted); font-size: 14px; }
.desc { color: #c8cdda; margin: 10px 0; }

.tags { display: flex; gap: 8px; flex-wrap: wrap; }

.tag {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}

.hint { color: var(--muted); font-size: 14px; margin-top: 16px; }

.related-title { margin: 36px 0 16px; font-size: 20px; }
.grid.related { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }

/* ---------------- 404 ---------------- */
.notfound { text-align: center; padding: 80px 0; }
.notfound-emoji { font-size: 72px; margin-bottom: 12px; }
.notfound h1 { font-size: 24px; }
.notfound p { color: var(--muted); margin-bottom: 24px; }

/* ---------------- 页脚 ---------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 22px 20px 30px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.footer a { color: var(--accent); }
.footer p { margin: 4px 0; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 820px) {
  .hero { flex-direction: column-reverse; gap: 20px; padding-top: 12px; }
  .hero-card { width: 100%; max-width: none; }
  .nav-inner { flex-wrap: wrap; gap: 10px; }
  .search { order: 3; max-width: none; flex-basis: 100%; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}