/* =========================================================
   Linux 精品导航 - 全局样式
   主题：通过 <html data-theme="dark|light"> 手动切换
   ========================================================= */

/* =========================================================
   1. 设计变量
   ========================================================= */
:root {
  --primary:       #4f46e5;
  --primary-dk:    #4338ca;
  --primary-soft:  rgba(79, 70, 229, 0.1);
  --success:       #10b981;
  --warning:       #f59e0b;
  --danger:        #ef4444;

  --bg:            #f7f8fa;
  --surface:       #ffffff;
  --surface-2:     #fafafa;
  --border:        #eaeaea;
  --border-strong: #d8d8d8;

  --text:          #1f2328;
  --text-dim:      #6b7280;
  --text-mute:     #9ca3af;

  --radius-sm:     6px;
  --radius:        10px;
  --radius-lg:     14px;
  --radius-pill:   999px;

  --shadow-sm:     0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow:        0 4px 14px rgba(0, 0, 0, 0.06);
  --shadow-lg:     0 12px 32px rgba(0, 0, 0, 0.10);

  --header-h:      64px;
  --max-w:         1280px;

  --font:          -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                   "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
                   Roboto, Helvetica, Arial, sans-serif;
  --font-mono:     ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --transition:    0.18s ease;

  --wp-image:      none;
  --wp-size:       auto;
  --wp-overlay:    transparent;
}

/* 深色模式 */
:root[data-theme="dark"] {
  --bg:            #0f1115;
  --surface:       #171a21;
  --surface-2:     #1e222b;
  --border:        #262b36;
  --border-strong: #333a49;

  --text:          #e6e8eb;
  --text-dim:      #9aa3b2;
  --text-mute:     #6b7280;

  --primary-soft:  rgba(99, 102, 241, 0.15);
  --shadow:        0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-lg:     0 12px 32px rgba(0, 0, 0, 0.55);
}

/* =========================================================
   2. Reset
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

::selection { background: var(--primary); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-mute); }

/* =========================================================
   3. 头部
   ========================================================= */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: block;
  border-radius: 8px;
}

:root[data-theme="dark"] .brand-logo {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.brand-text { min-width: 0; }

.brand-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-subtitle {
  margin: 2px 0 0;
  font-size: 0.75rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: 0.55;
  pointer-events: none;
}

.search-input {
  width: 240px;
  padding: 8px 12px 8px 34px;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

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

.search-input:focus {
  background: var(--surface);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.search-input::-webkit-search-cancel-button { -webkit-appearance: none; }

.tool-btn {
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
  white-space: nowrap;
}

.tool-btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.tool-btn:active { transform: translateY(1px); }

.tool-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.tool-btn.active:hover { background: var(--primary-dk); border-color: var(--primary-dk); }

.tool-btn.hidden { display: none; }

.lang-btn { min-width: 52px; }

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  padding: 8px 10px;
}

.icon-btn-glyph {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  color: currentColor;
  flex-shrink: 0;
}

.icon-btn-badge {
  position: absolute;
  right: -4px;
  bottom: -4px;
  font-size: 0.65rem;
  line-height: 1;
  padding: 2px 4px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* =========================================================
   4. 主内容
   ========================================================= */
.app-main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.filters-section { margin-bottom: 24px; }

.filters {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-label {
  flex-shrink: 0;
  min-width: 76px;
  padding-top: 4px;
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 500;
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1;
}

.tag-btn {
  padding: 4px 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.tag-btn:hover { background: var(--border); color: var(--text); }

.tag-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.result-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 24px;
  margin-bottom: 12px;
}

.result-count { font-size: 0.85rem; color: var(--text-dim); }

/* =========================================================
   4.1 GitGo 推广横幅（列表开始前的黄金视觉位）
   ========================================================= */
.promo-banner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 22px;
  padding: 14px 20px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, #4f46e5 0%, #7c3aed 40%, #2563eb 72%, #0ea5e9 100%);
  background-size: 170% 100%;
  background-position: 0 0;
  color: #fff;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.28);
  transition: transform var(--transition), box-shadow var(--transition),
              background-position 0.6s ease;
}

/* 悬停时扫过的高光 */
.promo-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg,
              transparent 32%,
              rgba(255, 255, 255, 0.30) 50%,
              transparent 68%);
  transform: translateX(-130%);
  transition: transform 0.75s ease;
  pointer-events: none;
}

.promo-banner:hover {
  transform: translateY(-2px);
  background-position: 100% 0;
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.36);
}

.promo-banner:hover::after { transform: translateX(130%); }

.promo-banner:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.promo-fire {
  flex-shrink: 0;
  font-size: 1.35rem;
  line-height: 1;
  animation: promoPulse 1.9s ease-in-out infinite;
}

@keyframes promoPulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.15); }
}

.promo-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.promo-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.promo-desc {
  font-size: 0.8rem;
  opacity: 0.9;
}

.promo-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 7px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-dk);
  background: #fff;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  transition: gap var(--transition);
}

.promo-banner:hover .promo-cta { gap: 10px; }

.promo-arrow { font-weight: 700; }

/* 深色主题下略微提亮，保持对比 */
:root[data-theme="dark"] .promo-banner {
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.5);
}

/* 窄屏：CTA 换行铺满，避免挤压文案 */
@media (max-width: 640px) {
  .promo-banner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 16px;
  }
  .promo-body { flex-basis: calc(100% - 40px); }
  .promo-cta  { width: 100%; justify-content: center; }
}

/* 尊重系统「减少动态效果」 */
@media (prefers-reduced-motion: reduce) {
  .promo-fire { animation: none; }
  .promo-banner::after { display: none; }
  .promo-banner,
  .promo-cta { transition: none; }
}

/* =========================================================
   5. 站点分组
   ========================================================= */
.results {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.group { margin: 0; scroll-margin-top: calc(var(--header-h) + 16px); }

.group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding-bottom: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--border);
}

.title-text { display: inline-flex; align-items: baseline; gap: 8px; }

.count-num { font-size: 0.8rem; font-weight: 400; color: var(--text-mute); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

/* =========================================================
   6. 站点卡片
   ========================================================= */
.site-item {
  position: relative;
  display: flex;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.site-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-1px);
  border-color: var(--border-strong);
}

.site-link {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: inherit;
  min-width: 0;
}

.site-link:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }

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

.site-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-desc {
  margin-top: 2px;
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  line-height: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: transparent;
}

.site-icon-emoji { font-size: 20px; line-height: 1; display: inline-block; }

.site-favicon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  border-radius: 4px;
  display: block;
}

.site-icon-letter {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  user-select: none;
}

.fav-btn {
  flex-shrink: 0;
  width: 40px;
  padding: 0;
  font-size: 1.15rem;
  color: var(--text-mute);
  background: transparent;
  border: none;
  border-left: 1px solid var(--border);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.fav-btn:hover { background: var(--surface-2); color: var(--warning); }
.fav-btn.faved { color: var(--warning); }

.heat-badge {
  display: inline-block;
  padding: 1px 6px;
  font-size: 0.65rem;
  font-weight: 500;
  color: #b45309;
  background: #fef3c7;
  border-radius: var(--radius-pill);
  line-height: 1.4;
}

:root[data-theme="dark"] .heat-badge {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.15);
}

mark.hl {
  padding: 0 2px;
  color: inherit;
  background: #fff3b0;
  border-radius: 2px;
}

:root[data-theme="dark"] mark.hl {
  background: rgba(251, 191, 36, 0.35);
  color: #fff;
}

/* =========================================================
   7. 分组底部
   ========================================================= */
.group-footer { margin-top: 14px; text-align: center; }

.more-btn {
  padding: 6px 20px;
  font-size: 0.8rem;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.more-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-soft);
}

.more-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--primary);
  transition: opacity var(--transition);
}

.more-link:hover { opacity: 0.75; }

/* =========================================================
   8. 空状态
   ========================================================= */
.empty { padding: 80px 20px; text-align: center; color: var(--text-dim); }

.empty-icon {
  display: block;
  margin-bottom: 12px;
  font-size: 44px;
  line-height: 1;
  opacity: 0.5;
}

/* =========================================================
   8.5 友情链接
   ========================================================= */
.friend-links {
  max-width: var(--max-w);
  margin: 60px auto 0;
  padding: 0 20px;
}

.friend-links-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  padding-bottom: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.friend-links-title::before {
  content: '🔗';
  font-size: 1rem;
  opacity: 0.75;
}

.friend-links-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.friend-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.friend-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  border-color: var(--primary);
}

.friend-card-head { display: flex; align-items: center; gap: 12px; }

.friend-card-badge {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  line-height: 1;
  background: var(--primary-soft);
  border-radius: var(--radius);
}

.friend-card-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.friend-card-sub {
  display: block;
  margin-top: 2px;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-dim);
}

.friend-card-desc {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-dim);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.friend-card-url {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: var(--radius-pill);
}

:root[data-theme="dark"] .friend-card-badge {
  background: rgba(99, 102, 241, 0.18);
}
:root[data-theme="dark"] .friend-card-url {
  background: rgba(99, 102, 241, 0.22);
  color: #a5b4fc;
}

/* =========================================================
   9. 页脚
   ========================================================= */
.app-footer {
  max-width: var(--max-w);
  margin: 60px auto 0;
  padding: 24px 20px 32px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-mute);
  border-top: 1px solid var(--border);
}

.app-footer p { margin: 0; }
.footer-sub { margin-top: 6px !important; }

.footer-sub a {
  color: var(--primary);
  transition: opacity var(--transition);
}

.footer-sub a:hover { opacity: 0.75; }

/* =========================================================
   10. 回到顶部
   ========================================================= */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
  z-index: 90;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover { background: var(--primary-dk); }

/* =========================================================
   11. 音乐面板
   ========================================================= */
.music-panel {
  position: fixed;
  top: calc(var(--header-h) + 8px);
  right: 20px;
  width: 320px;
  max-height: calc(100vh - var(--header-h) - 32px);
  display: flex;
  flex-direction: column;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 120;
  transform: translateY(-8px) scale(0.98);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}

.music-panel.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.music-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.music-head-title { font-weight: 700; font-size: 0.95rem; }
.music-head-actions { display: flex; gap: 4px; }

.music-icon-btn {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.music-icon-btn:hover { background: var(--surface-2); color: var(--text); }
.music-icon-btn.off { opacity: 0.35; }

.music-now { margin-bottom: 10px; }

.music-title {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music-artist { font-size: 0.75rem; color: var(--text-dim); }

.music-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.music-seek {
  flex: 1;
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  background: var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.music-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  background: var(--primary);
  border-radius: 50%;
}

.music-seek::-moz-range-thumb {
  width: 12px; height: 12px; border: none;
  background: var(--primary); border-radius: 50%;
}

.music-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

.music-btn {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  color: var(--text);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.music-btn:hover { background: var(--border); }
.music-btn svg { width: 16px; height: 16px; display: block; }

.music-play {
  width: 42px;
  height: 42px;
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.music-play:hover { background: var(--primary-dk); border-color: var(--primary-dk); }
.music-play svg { width: 18px; height: 18px; }

.music-volume {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 0.7rem;
  color: var(--text-dim);
}

.music-vol-icon { width: 14px; height: 14px; flex-shrink: 0; display: block; }

.music-vol {
  flex: 1;
  height: 4px;
  appearance: none;
  -webkit-appearance: none;
  background: var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
}

.music-vol::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  background: var(--primary); border-radius: 50%;
}

.music-vol::-moz-range-thumb {
  width: 12px; height: 12px; border: none;
  background: var(--primary); border-radius: 50%;
}

.music-vol-val { min-width: 34px; text-align: right; }

.music-actions { display: flex; gap: 6px; margin-bottom: 10px; }

.music-action-btn {
  flex: 1;
  padding: 6px 10px;
  font-size: 0.78rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.music-action-btn:hover { background: var(--border); }

.music-list {
  flex: 1;
  min-height: 120px;
  max-height: 320px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-y: auto;
  border-top: 1px solid var(--border);
}

.music-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 4px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.music-list-item:hover { background: var(--surface-2); }
.music-list-item.active { background: var(--primary-soft); }

.music-list-idx {
  width: 22px;
  text-align: center;
  font-size: 0.7rem;
  color: var(--text-mute);
  flex-shrink: 0;
}

.music-list-info { flex: 1; min-width: 0; }

.music-list-name {
  font-size: 0.82rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music-list-artist { font-size: 0.7rem; color: var(--text-mute); }

.music-list-del {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-mute);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.music-list-del:hover { color: var(--danger); background: var(--surface-2); }

.music-list-empty {
  padding: 20px 10px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-mute);
}

/* =========================================================
   12. 壁纸面板
   ========================================================= */
.wp-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 110;
}

.wp-overlay.show { opacity: 1; pointer-events: auto; }

.wp-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 120;
}

.wp-panel.show {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.wp-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.wp-head-title { font-weight: 700; font-size: 0.95rem; }

.wp-custom { display: flex; gap: 8px; margin-bottom: 12px; }

.wp-url {
  flex: 1;
  padding: 8px 10px;
  font-size: 0.82rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
}

.wp-url:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.wp-apply {
  padding: 8px 16px;
  font-size: 0.82rem;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.wp-apply:hover { background: var(--primary-dk); }

.wp-grid {
  flex: 1;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
}

.wp-item {
  position: relative;
  padding-top: 62%;
  background: var(--surface-2) center/cover no-repeat;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.wp-item:hover { transform: translateY(-1px); }
.wp-item.active { border-color: var(--primary); }

.wp-name {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 4px 8px;
  font-size: 0.7rem;
  color: #fff;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =========================================================
   12.5 设置面板
   ========================================================= */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
  z-index: 110;
}

.settings-overlay.show { opacity: 1; pointer-events: auto; }

.settings-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 120;
  overflow-y: auto;
}

.settings-panel.show {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.settings-head-title { font-weight: 700; font-size: 1.05rem; }

.settings-section { margin-bottom: 18px; }
.settings-section:last-of-type { margin-bottom: 8px; }

.settings-section-title {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 600;
}

.settings-section-desc {
  margin: 0 0 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.5;
}

.settings-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.settings-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-dim);
  transition: color var(--transition);
}

.settings-radio input[type="radio"] {
  accent-color: var(--primary);
  cursor: pointer;
}

.settings-radio:hover { color: var(--text); }

.settings-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.settings-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
}

.settings-btn:hover { background: var(--border); border-color: var(--border-strong); }
.settings-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.settings-btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.settings-btn-primary:hover {
  background: var(--primary-dk);
  border-color: var(--primary-dk);
}

.settings-btn-block {
  width: 100%;
  flex: none;
}

.settings-stats {
  font-size: 0.78rem;
  color: var(--text-mute);
  text-align: center;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
}

/* =========================================================
   12.6 分类排序列表
   ========================================================= */
.category-order-list {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  max-height: 320px;
  overflow-y: auto;
  background: var(--surface-2);
  overflow-anchor: none;
}

.category-order-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  transition: background var(--transition), opacity var(--transition);
}

.category-order-item:last-child { border-bottom: none; }

.category-order-item:hover { background: var(--border); }

.category-order-item.dragging {
  opacity: 0.45;
  background: var(--primary-soft);
  cursor: grabbing;
}

.category-order-item.drop-target {
  box-shadow: inset 0 2px 0 0 var(--primary);
}

.category-order-handle {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
  color: var(--text-mute);
  font-size: 0.95rem;
  line-height: 1;
  cursor: grab;
}

.category-order-item.dragging .category-order-handle { cursor: grabbing; }

.category-order-name {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-order-index {
  flex-shrink: 0;
  font-size: 0.72rem;
  color: var(--text-mute);
  font-variant-numeric: tabular-nums;
  min-width: 20px;
  text-align: right;
}

/* =========================================================
   12.7 站点状态
   ========================================================= */

/* 状态角标（卡片右上角） */
.site-status-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  font-size: 0.65rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-pill);
  pointer-events: none;
  z-index: 2;
  white-space: nowrap;
}

.site-status-badge.status-fail {
  color: #b45309;
  background: #fef3c7;
  border: 1px solid #fde68a;
}

.site-status-badge.status-warn {
  color: #92400e;
  background: #fef9c3;
  border: 1px solid #fde68a;
}

:root[data-theme="dark"] .site-status-badge.status-fail {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.18);
  border-color: rgba(251, 191, 36, 0.35);
}

:root[data-theme="dark"] .site-status-badge.status-warn {
  color: #fcd34d;
  background: rgba(252, 211, 77, 0.15);
  border-color: rgba(252, 211, 77, 0.3);
}

/* 失效站点卡片降权 */
.site-item.status-fail {
  opacity: 0.68;
}

.site-item.status-fail:hover {
  opacity: 1;
}

/* 站点状态区块的时间提示 */
.settings-status-time {
  margin-bottom: 10px;
  font-size: 0.75rem;
  color: var(--text-mute);
  text-align: center;
}

/* 刷新按钮的加载态 */
.settings-btn.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* =========================================================
   13. 页面背景
   ========================================================= */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: var(--wp-image, none);
  background-size: var(--wp-size, auto);
  background-position: center;
  background-repeat: no-repeat;
  z-index: -2;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--wp-overlay, transparent);
  z-index: -1;
  pointer-events: none;
}

body[data-has-wallpaper="1"] .app-header {
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

/* =========================================================
   14. Toast
   ========================================================= */
.toast-root {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 200;
  pointer-events: none;
}

.toast {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: min(420px, calc(100vw - 32px));
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .22s ease, transform .22s ease;
  pointer-events: auto;
}

.toast-enter { opacity: 1; transform: translateY(0); }
.toast-leave { opacity: 0; transform: translateY(8px); }

.toast-success { border-color: var(--success); }
.toast-warning { border-color: var(--warning); }
.toast-error   { border-color: var(--danger); }

.toast-close {
  background: transparent; border: none;
  color: var(--text-mute);
  font-size: 1rem; cursor: pointer;
}

/* =========================================================
   15. 响应式
   ========================================================= */
@media (max-width: 960px) {
  .search-input { width: 200px; }
}

@media (max-width: 720px) {
  .header-inner {
    padding: 10px 14px;
    flex-direction: column;
    align-items: stretch;
  }

  .brand { justify-content: center; }
  .toolbar { justify-content: stretch; }
  .search-wrap { flex: 1; }
  .search-input { width: 100%; }
  .app-main { padding: 16px 14px 32px; }
  .filters { padding: 12px; }
  .filter-row { gap: 8px; }
  .filter-label { min-width: 100%; padding-top: 0; }

  .grid { grid-template-columns: 1fr; gap: 10px; }

  .back-to-top { right: 16px; bottom: 16px; }

  .music-panel {
    right: 12px; left: 12px;
    width: auto;
    top: calc(var(--header-h) + 8px);
  }

  .wp-panel { width: calc(100vw - 24px); max-height: calc(100vh - 96px); }
  .wp-grid { grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }

  .settings-panel { width: calc(100vw - 24px); padding: 16px; }
  .category-order-list { max-height: 240px; }

  .friend-links { margin-top: 40px; padding: 0 14px; }
  .friend-links-list { grid-template-columns: 1fr; gap: 12px; }
  .friend-card { padding: 14px; }
  .friend-card-badge { width: 36px; height: 36px; font-size: 20px; }
}

@media (max-width: 420px) {
  .brand-title { font-size: 1rem; }
  .tool-btn { padding: 7px 10px; font-size: 0.8rem; }
  .settings-actions { flex-direction: column; }
}

/* =========================================================
   16. 无障碍与动效
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* =========================================================
   17. 打印
   ========================================================= */
@media print {
  .app-header, .filters-section, .back-to-top, .fav-btn,
  .group-footer, .music-panel, .wp-panel, .wp-overlay,
  .settings-panel, .settings-overlay, .toast-root {
    display: none !important;
  }
  .site-item { break-inside: avoid; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .friend-links { break-inside: avoid; }
  body::before, body::after { display: none; }
}