/* 4 款小游戏 · 组件样式（SPEC §1 双布局 / §1.3 触摸控件 / §1.6 无障碍 / §0.4 降级）
 * 继承 tokens.css 设计变量；移动端竖屏触摸控件，PC 横屏键盘。 */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-game-bg, #09090B);
  color: var(--color-foreground, #FAFAFA);
  font-family: var(--font-sans, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Roboto, sans-serif);
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

/* 顶栏 */
.site-head, .game-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-h, 56px);
  padding: var(--space-2) var(--space-4);
  padding-top: calc(var(--space-2) + env(safe-area-inset-top));
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--color-background, #09090B) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border, #27272A);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: inherit;
}
.brand-mark {
  font-size: 22px;
  color: var(--color-game-accent-warm, #FBBF24);
}
.head-nav { display: none; }
@media (min-width: 900px) {
  .head-nav { display: flex; gap: var(--space-4); }
  .head-nav a {
    color: var(--color-muted-foreground, #A1A1AA);
    text-decoration: none;
    font-size: 15px;
    padding: 6px 4px;
    border-bottom: 2px solid transparent;
  }
  .head-nav a:hover { color: var(--color-foreground, #FAFAFA); border-bottom-color: var(--color-game-accent-warm, #FBBF24); }
}

.game-title { font-size: 18px; font-weight: 700; margin: 0; letter-spacing: .5px; }
.game-btns { display: flex; gap: var(--space-2); }
.game-btns button {
  min-width: 44px;
  min-height: 44px;
  font-size: 20px;
  line-height: 1;
  border-radius: var(--radius-md, 12px);
  border: 1px solid var(--color-border, #27272A);
  background: var(--color-card, #18181B);
  color: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--dur-fade, 200ms);
}
.game-btns button:active { transform: scale(.94); }
.game-btns button:focus-visible { outline: 2px solid var(--color-game-accent-warm, #FBBF24); outline-offset: 2px; }

/* 主舞台 */
.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  min-height: calc(100dvh - var(--header-h, 56px));
}
#game-canvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border-radius: var(--radius-md, 12px);
  box-shadow: var(--shadow-md, 0 8px 24px rgba(0,0,0,.5));
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

@media (orientation: portrait) {
  #game-canvas { width: min(94vw, 380px); height: auto; aspect-ratio: auto; }
}
@media (min-width: 900px) and (orientation: landscape) {
  .stage { flex-direction: row; justify-content: center; align-items: flex-start; }
  #game-canvas { max-width: 480px; max-height: 82vh; width: auto; height: auto; }
}

/* HUD */
.hud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  width: 100%;
  max-width: 480px;
  font-family: var(--font-mono, 'SF Mono', Consolas, monospace);
}
.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 64px;
  padding: 8px 10px;
  background: var(--color-card, #18181B);
  border: 1px solid var(--color-border, #27272A);
  border-radius: var(--radius-sm, 6px);
}
.hud-item .hud-label { font-size: 11px; color: var(--color-muted-foreground, #A1A1AA); letter-spacing: 1px; }
.hud-item .hud-val { font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; }
.hud-item.hud-wide { min-width: 100px; }
.hud-item.hud-wide .hud-val { font-size: 14px; }

.hint-line {
  width: 100%;
  max-width: 480px;
  text-align: center;
  font-size: 13px;
  color: var(--color-muted-foreground, #A1A1AA);
  line-height: 1.5;
}
.hint-line kbd {
  font-family: var(--font-mono, monospace);
  font-size: 12px;
  padding: 1px 6px;
  border: 1px solid var(--color-border, #27272A);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--color-muted, #27272A);
}

/* 触摸控件层（竖屏 / coarse pointer 才显示） */
.tc-wrap {
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  width: min(94vw, 480px);
  margin: var(--space-2) auto 0;
  position: relative;
  z-index: 20;
  touch-action: none;
}
.tc-wrap .tc-btn { pointer-events: auto; }
@media (orientation: portrait) {
  .tc-wrap { display: flex; }
}
@media (pointer: coarse) and (min-width: 600px) {
  .tc-wrap { display: flex; }
}

.tc-dpad {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(2, 56px);
  gap: 6px;
  background: rgba(255,255,255,.06);
  border-radius: var(--radius-md, 12px);
  padding: 8px;
  touch-action: none;
}
.dpad-grid {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(3, 56px);
  gap: 4px;
}
.dpad-grid .dp-up { grid-column: 2; grid-row: 1; }
.dpad-grid .dp-left { grid-column: 1; grid-row: 2; }
.dpad-grid .dp-right { grid-column: 3; grid-row: 2; }
.dpad-grid .dp-down { grid-column: 2; grid-row: 3; }

.tc-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.tc-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.12);
  color: #FAFAFA;
  font-size: 20px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  transition: background 120ms, transform 120ms;
}
.tc-btn:hover { background: rgba(255,255,255,.2); }
.tc-btn.active { background: var(--color-game-accent-warm, #FBBF24); color: #09090B; transform: scale(.94); }
.tc-btn:focus-visible { outline: 2px solid var(--color-game-accent-warm, #FBBF24); outline-offset: 2px; }
.tc-dp { border-radius: 14px; }
.tc-rot { background: rgba(168,85,247,.35); }
.tc-hard { background: rgba(239,68,68,.3); }
.tc-jump { background: rgba(34,211,238,.35); font-size: 16px; }

/* 首页门户 */
.portal {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
}
.banner { text-align: center; padding: var(--space-6) 0 var(--space-4); }
.banner h1 { font-size: clamp(26px, 5vw, 40px); margin: 0 0 var(--space-2); }
.banner-sub { color: var(--color-muted-foreground, #A1A1AA); line-height: 1.7; margin: 0; }

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
.game-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: var(--color-card, #18181B);
  border: 1px solid var(--color-border, #27272A);
  border-radius: var(--radius-lg, 20px);
  overflow: hidden;
  transition: transform var(--dur-step, 300ms) var(--ease-story, ease), border-color var(--dur-fade, 200ms);
}
.game-card:hover { transform: translateY(-4px); border-color: var(--color-game-accent-warm, #FBBF24); }
.game-card:focus-visible { outline: 2px solid var(--color-game-accent-warm, #FBBF24); outline-offset: 2px; }
.thumb {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background-color: #0E0E11;
  background-size: cover;
  background-position: center;
}
.card-body { padding: var(--space-4); display: flex; flex-direction: column; gap: 6px; }
.card-en { font-size: 13px; letter-spacing: 2px; color: var(--color-game-accent-warm, #FBBF24); font-weight: 700; }
.card-cn { font-size: 20px; font-weight: 700; }
.card-desc { color: var(--color-muted-foreground, #A1A1AA); font-size: 14px; line-height: 1.6; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.card-tags i {
  font-style: normal;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--color-muted, #27272A);
  color: var(--color-foreground, #FAFAFA);
}
.card-cta {
  padding: var(--space-3) var(--space-4);
  font-weight: 700;
  color: var(--color-game-accent-warm, #FBBF24);
  border-top: 1px solid var(--color-border, #27272A);
}

/* 页脚 */
.site-foot {
  text-align: center;
  padding: var(--space-4);
  padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
  color: var(--color-muted-foreground, #A1A1AA);
  font-size: 14px;
  border-top: 1px solid var(--color-border, #27272A);
}
.site-foot a {
  color: var(--color-game-accent-warm, #FBBF24);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 2px;
}

/* 降级提示（D3） */
.fallback-msg {
  max-width: 480px;
  margin: 10vh auto;
  padding: var(--space-6);
  text-align: center;
  background: var(--color-card, #18181B);
  border: 1px solid var(--color-border, #27272A);
  border-radius: var(--radius-lg, 20px);
  line-height: 1.7;
}

/* 低性能 / reduced-motion：关屏震 / 闪烁 / 过渡（§0.4 D5） */
@media (prefers-reduced-motion: reduce) {
  .game-card, .tc-btn, .game-btns button { transition: none; }
  .game-card:hover { transform: none; }
}

/* 无横向滚动（L2） */
html, body { overflow-x: hidden; }