/* 音乐收藏 - 样式（浅色默认，深色可选） */
:root {
  --bg: #f6f8fb;
  --card-bg: #ffffff;
  --topbar-bg: rgba(255,255,255,0.92);
  --text: #1f2937;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --hover-bg: #f3f4f6;
  --btn-bg: #ffffff;
  --btn-border: #d1d5db;
  --btn-hover: #f3f4f6;
  --accent: #4d8cff;
  --accent-soft: rgba(77,140,255,0.1);
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.08);
}
[data-theme="dark"] {
  --bg: #0f1115;
  --card-bg: #161a21;
  --topbar-bg: rgba(15,17,21,0.92);
  --text: #e6e8eb;
  --text-secondary: #8b94a3;
  --text-tertiary: #6b7383;
  --border: #1f242b;
  --border-strong: #2a2f38;
  --hover-bg: #1c2028;
  --btn-bg: #1c2028;
  --btn-border: #2a2f38;
  --btn-hover: #252a34;
  --accent: #4d8cff;
  --accent-soft: rgba(77,140,255,0.15);
  --shadow: none;
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.2s, color 0.2s;
  -webkit-text-size-adjust: 100%;
}
body { min-height: 100vh; min-height: 100dvh; overflow-x: hidden; }

/* ============ Topbar ============ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--topbar-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.topbar-left { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; }
.logo svg { width: 22px; height: 22px; display: block; }
.topbar h1 { font-size: 17px; font-weight: 700; letter-spacing: 0.3px; white-space: nowrap; }
.count { font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.topbar-actions { display: flex; gap: 8px; flex-shrink: 0; }
.icon-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  border-radius: 8px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  padding: 0;
}
.icon-btn:hover { background: var(--btn-hover); }
.icon-btn svg { width: 18px; height: 18px; pointer-events: none; }

/* ============ Filter ============ */
.filter-bar {
  padding: 12px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 56px;
  z-index: 49;
  display: flex; flex-direction: column; gap: 10px;
}
.search-wrap {
  position: relative;
  display: flex; align-items: center;
}
.search-ic {
  position: absolute; left: 12px;
  width: 16px; height: 16px;
  color: var(--text-secondary);
  pointer-events: none;
}
.search-wrap input {
  width: 100%;
  padding: 10px 14px 10px 36px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}
.search-wrap input:focus { border-color: var(--accent); }
.filter-group {
  display: flex; align-items: center;
  gap: 8px;
}
.filter-label {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 1px;
}
.chips {
  display: flex; gap: 5px; overflow-x: auto;
  scrollbar-width: none; -ms-overflow-style: none;
  flex: 1;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0;
  padding: 4px 11px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  border-radius: 14px;
  font-size: 11px;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4px;
  transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
  min-height: 28px;
}
.chip:hover { background: var(--btn-hover); }
.chip.active { background: var(--text); color: var(--bg); border-color: var(--text); font-weight: 600; }
.chip-cnt {
  font-size: 10px;
  opacity: 0.7;
  background: rgba(0,0,0,0.08);
  padding: 0 5px;
  border-radius: 7px;
}
.chip.active .chip-cnt { background: rgba(255,255,255,0.2); }

.artist-bar {
  padding: 8px 20px;
  background: var(--accent-soft);
  color: var(--text);
  font-size: 13px;
  display: flex; align-items: center; justify-content: space-between;
}
.artist-bar a {
  color: var(--accent);
  text-decoration: none;
  font-size: 12px;
  padding: 2px 8px;
  border: 1px solid var(--accent);
  border-radius: 4px;
}

/* ============ Main ============ */
.main {
  max-width: 920px;
  margin: 0 auto;
  padding: 20px;
}
.cat-section { margin-bottom: 24px; }
.cat-title {
  display: flex; align-items: baseline; gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.cat-name { color: var(--text); }
.cat-count {
  font-size: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  padding: 1px 7px;
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}
.songs { display: flex; flex-direction: column; gap: 8px; }

/* ============ Song Card ============ */
.song {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow);
}
.song:hover { border-color: var(--border-strong); box-shadow: var(--shadow-hover); }
.song-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
}
.song-rank {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  font-variant-numeric: tabular-nums;
}
.song-meta { flex: 1; min-width: 0; }
.song-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.song-artist {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.song-tags {
  display: flex; flex-wrap: wrap; gap: 4px;
  margin-top: 5px;
}
.tag, .scene {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 500;
}
.scene {
  background: rgba(255,140,0,0.12);
  color: #d97706;
}
[data-theme="dark"] .scene {
  background: rgba(255,140,0,0.2);
  color: #fb923c;
}
.expand-btn {
  flex-shrink: 0;
  width: 32px; height: 32px;
  border: 1px solid var(--btn-border);
  background: transparent;
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s, background 0.15s;
  padding: 0;
}
.expand-btn:hover { background: var(--hover-bg); }
.expand-btn .ic-down { width: 16px; height: 16px; transition: transform 0.2s; }
.song.expanded .expand-btn { transform: rotate(180deg); background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

/* ============ Lyrics ============ */
.lyrics-wrap {
  border-top: 1px solid var(--border);
  background: var(--hover-bg);
  animation: slideDown 0.2s ease;
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.lyrics {
  padding: 16px 20px;
  font-size: 13px;
  line-height: 2;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-serif, "Songti SC", "Microsoft YaHei", serif;
  max-height: 60vh;
  overflow-y: auto;
}
.lyrics-actions {
  display: flex; justify-content: flex-end;
  padding: 8px 16px 12px;
  border-top: 1px solid var(--border);
}
.copy-btn {
  padding: 6px 14px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--text);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.copy-btn:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { background: var(--accent); color: white; border-color: var(--accent); }

/* ============ Empty ============ */
.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.empty p { font-size: 14px; }
.empty a {
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
}

/* ============ Footer ============ */
.footer {
  padding: 24px 20px 40px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
}

/* ============ Mobile ============ */
@media (max-width: 600px) {
  .topbar { padding: 10px 12px; }
  .topbar h1 { font-size: 15px; }
  .count { font-size: 11px; }
  .filter-bar { padding: 10px 12px; top: 50px; gap: 8px; }
  .filter-label { display: none; }
  .chips { margin: 0 -12px; padding: 0 12px; }
  .chip { padding: 3px 9px; font-size: 10px; min-height: 26px; }
  .main { padding: 14px 12px; }
  .cat-title { font-size: 12px; }
  .song-head { padding: 12px 14px; }
  .song-rank { width: 24px; height: 24px; font-size: 11px; }
  .song-title { font-size: 13px; }
  .song-tags .tag, .song-tags .scene { font-size: 9px; padding: 0 5px; }
  .lyrics { padding: 14px 16px; font-size: 12.5px; line-height: 1.9; }
}

/* ============ 歌手页面 ============ */
.back-link {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s;
}
.back-link:hover { background: var(--hover-bg); color: var(--text); }
.back-link svg { width: 18px; height: 18px; }

.artists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.artist-card {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  box-shadow: var(--shadow);
  -webkit-tap-highlight-color: transparent;
}
.artist-card:hover { transform: translateY(-2px); border-color: var(--border-strong); box-shadow: var(--shadow-hover); }
.artist-card:active { transform: scale(0.98); }

.artist-avatar {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
  color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  font-weight: 700;
}
.artist-avatar-lg { width: 96px; height: 96px; font-size: 44px; }

.artist-info { flex: 1; min-width: 0; }
.artist-name {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.artist-en {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 2px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.artist-meta { display: flex; gap: 4px; margin-top: 6px; font-size: 10px; color: var(--text-secondary); overflow: hidden; }
.meta-pill { background: var(--accent-soft); color: var(--accent); padding: 1px 6px; border-radius: 8px; font-weight: 500; }
.meta-dim { color: var(--text-tertiary); font-size: 10px; }
.artist-count { display: flex; align-items: center; gap: 4px; margin-top: 6px; font-size: 11px; color: var(--text-secondary); }
.artist-count svg { width: 12px; height: 12px; }

.artist-hero {
  display: flex; gap: 20px;
  padding: 20px;
  background: linear-gradient(135deg, var(--accent-soft) 0%, transparent 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 20px;
}
.artist-hero-info { flex: 1; min-width: 0; }
.artist-hero-name { font-size: 24px; font-weight: 700; line-height: 1.2; margin: 0 0 4px; }
.artist-hero-en { font-size: 13px; color: var(--text-tertiary); margin: 0 0 10px; }
.artist-hero-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.artist-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 0; }
.info-item { margin: 0; }
.info-item dt { font-size: 10px; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.5px; margin: 0 0 2px; }
.info-item dd { font-size: 13px; color: var(--text); margin: 0; }

.bio-section, .songs-section { margin-bottom: 24px; }
.section-title { font-size: 16px; font-weight: 600; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.section-title::before { content: ''; display: block; width: 3px; height: 16px; background: var(--accent); border-radius: 2px; }
.bio-text { font-size: 14px; line-height: 1.8; color: var(--text); background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; }

.back-section { margin: 30px 0; text-align: center; }
.back-link-big { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border: 1px solid var(--btn-border); border-radius: 8px; color: var(--text-secondary); text-decoration: none; font-size: 14px; transition: all 0.15s; }
.back-link-big:hover { color: var(--text); background: var(--hover-bg); }
.back-link-big svg { width: 16px; height: 16px; }

@media (max-width: 600px) {
  .artists-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .artist-card { padding: 10px 12px; gap: 10px; }
  .artist-avatar { width: 40px; height: 40px; font-size: 18px; }
  .artist-name { font-size: 14px; }
  .artist-hero { flex-direction: column; align-items: center; text-align: center; padding: 16px; }
  .artist-hero-tags { justify-content: center; }
  .artist-info-grid { grid-template-columns: repeat(2, 1fr); }
}