/* 游戏柜共享主题变量，供列表页与播放页使用。 */
:root {
  color-scheme: light dark;
  --header: rgba(244, 239, 230, 0.92);
  --cover: #ded6ca;
  --tag-text: #a44b2e;
  --tag-bg: #f8dfd3;
  --panel: #ebe3d6;
  --success: #4d795a;
  --error: #b34e39;
  --focus: #21874a;
  --paper: #f4efe6;
  --ink: #202228;
  --muted: #77736c;
  --line: #d9d1c3;
  --accent: #0ec314;
  --dark: #191b20;
  --card: #fffdf9;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: 'Noto Sans SC', system-ui, sans-serif;
}
body[data-page='play'] {
  color: var(--ink);
  background: var(--paper);
}
a {
  color: inherit;
  text-decoration: none;
}
.home-link {
  font:
    500 13px system-ui,
    sans-serif;
  letter-spacing: 0;
  text-transform: none;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}
button,
input {
  font: inherit;
}
/* 两种页面共用的导航与品牌区域。 */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--header);
}
.site-header--dark {
  color: var(--ink);
  border-color: var(--line);
  background: var(--header);
}
.site-header__inner,
.page-shell,
.play-shell,
.site-footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}
.site-header__inner {
  min-height: 78px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: white;
  background: var(--accent);
  font:
    700 21px 'Space Mono',
    monospace;
}
.brand strong,
.brand small {
  display: block;
}
.brand strong {
  font-size: 16px;
  letter-spacing: 0.04em;
}
.brand small,
.header-meta,
.eyebrow,
.tool-label {
  color: var(--muted);
  font:
    11px 'Space Mono',
    monospace;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.brand--light small,
.eyebrow--light {
  color: var(--muted);
}
.header-meta {
  display: flex;
  align-items: center;
  gap: 24px;
}
.text-link {
  color: var(--accent);
  font:
    600 13px 'Noto Sans SC',
    sans-serif;
  letter-spacing: 0;
  text-transform: none;
}
.page-shell {
  padding: 62px 0 80px;
}
.toolbar,
.filter-row,
.play-heading,
.play-details,
.button-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.eyebrow {
  margin: 0 0 9px;
}
h1,
h2,
p {
  margin-top: 0;
}
h1 {
  margin-bottom: 0;
  font-size: clamp(22px, 4vw, 34px);
  letter-spacing: -0.04em;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: min(100%, 280px);
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
}
.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}
.filter-row {
  margin: 44px 0 18px;
}
.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-chip,
.button {
  border: 1px solid var(--line);
  cursor: pointer;
  transition: 0.18s ease;
}
.filter-chip {
  padding: 7px 14px;
  border-radius: 99px;
  color: var(--muted);
  background: transparent;
  font-size: 13px;
}
.filter-chip:hover,
.filter-chip.is-active {
  color: var(--paper);
  border-color: var(--ink);
  background: var(--ink);
}
.result-count {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
/* 筛选结果的卡片网格，封面与标题保持统一尺寸。 */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 12px;
}
.game-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}
.game-card:hover {
  transform: translateY(-2px);
  box-shadow: 3px 3px 0 var(--ink);
}
.game-card__cover {
  width: 60px;
  height: 60px;
  margin: 10px auto 0;
  overflow: hidden;
  background: var(--cover);
}
.game-card__cover img {
  width: 60px;
  height: 60px;
  display: block;
  object-fit: cover;
}
.game-card__body {
  padding: 8px 10px 10px;
}
.game-card__body h2 {
  margin-bottom: 3px;
  font-size: 13px;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.game-card__body p {
  min-height: 16px;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tag-row {
  display: flex;
  gap: 4px;
  min-height: 18px;
  overflow: hidden;
}
.tag-row span {
  padding: 2px 5px;
  color: var(--tag-text);
  background: var(--tag-bg);
  font-size: 10px;
  white-space: nowrap;
}
.empty-state {
  padding: 50px 0;
  color: var(--muted);
  text-align: center;
}
/* 本机存档导入导出入口及操作反馈。 */
.backup-panel {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 68px;
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.backup-panel h2,
.play-details h2 {
  margin-bottom: 8px;
  font-size: 24px;
  letter-spacing: -0.04em;
}
.backup-panel p:not(.eyebrow),
.details-copy > p:not(.eyebrow) {
  max-width: 530px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 15px;
  color: var(--ink);
  background: transparent;
  font-size: 13px;
  white-space: nowrap;
}
.button:hover {
  transform: translateY(-1px);
}
.button--dark {
  color: white;
  border-color: var(--dark);
  background: var(--dark);
}
.button--light {
  background: var(--card);
}
.button--outline {
  color: inherit;
  border-color: currentColor;
}
.button--accent {
  color: white;
  border-color: var(--accent);
  background: var(--accent);
}
.status-text {
  min-height: 20px;
  margin: 12px 0 0;
  color: var(--success);
  font-size: 12px;
}
.status-text--error {
  color: var(--error);
}
.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 20px 0 30px;
  color: var(--muted);
  font:
    11px 'Space Mono',
    monospace;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}
/* 游戏播放页：标题、Ruffle 容器和游戏说明。 */
.play-shell {
  padding: 52px 0 70px;
}
.play-heading {
  color: var(--ink);
  align-items: end;
}
.play-heading h1 {
  font-size: clamp(28px, 5vw, 46px);
}
.play-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.player-frame {
  margin-top: 28px;
  padding: 12px;
  background: #0d0e11;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
}
.player-container {
  display: grid;
  place-items: center;
  width: min(100%, 960px);
  aspect-ratio: 4 / 3;
  margin: 0 auto;
  overflow: hidden;
  background: #050506;
}
.player-container ruffle-player {
  display: block;
  width: 100%;
  height: 100%;
}
.loading-state {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #96959a;
  font-size: 13px;
}
.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid #555;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.play-details {
  align-items: start;
  margin-top: 42px;
  padding-top: 25px;
  border-top: 1px solid var(--line);
  color: var(--ink);
}
.save-tools {
  min-width: 280px;
}
.save-tools .tool-label {
  margin-bottom: 12px;
  color: var(--muted);
}
/* 窄屏下调整网格、工具栏和播放器，保留可操作的按钮尺寸。 */
@media (max-width: 700px) {
  .site-header__inner,
  .page-shell,
  .play-shell,
  .site-footer {
    width: min(100% - 24px, 1180px);
  }
  .site-header__inner {
    min-height: 66px;
  }
  .header-meta {
    gap: 10px;
  }
  .header-meta .text-link {
    display: none;
  }
  .page-shell,
  .play-shell {
    padding-top: 36px;
  }
  .toolbar,
  .play-heading,
  .play-details,
  .backup-panel {
    display: block;
  }
  .search-box {
    margin-top: 25px;
  }
  .filter-row {
    margin-top: 30px;
  }
  .backup-panel .button-row,
  .play-heading .button-row,
  .play-details .button-row {
    margin-top: 20px;
    justify-content: start;
  }
  .site-footer {
    display: block;
    line-height: 2;
  }
  .player-frame {
    margin-top: 20px;
    padding: 6px;
  }
  .player-container,
  .player-container ruffle-player {
    width: 100%;
  }
}

/* 跟随系统主题覆盖背景、边框和文本颜色。 */
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #191b20;
    --ink: #f8f5ee;
    --muted: #b2afa8;
    --line: #494c55;
    --card: #24272e;
    --header: rgba(25, 27, 32, 0.92);
    --cover: #353942;
    --tag-text: #ffc2a6;
    --tag-bg: #503328;
    --panel: #292c33;
    --success: #9ac6a7;
    --error: #ffac98;
    --focus: #70d996;
  }
  .button--dark {
    border-color: var(--line);
    background: var(--card);
  }
}