:root {
  --bg: #f5f5f7;
  --bg-secondary: #ffffff;
  --text: #111111;
  --text-secondary: #555555;
  --border: #cccccc;
  --hover: #f0f0f0;
  --accent: #000000;
  --accent-text: #ffffff;
  --danger: #c0392b;
  --shadow: 0 4px 16px rgba(0,0,0,0.06);
  --navbar-height: 52px;
  --search-height: 50px;
  --player-controls-height: 70px;
  --right-panel-width: 280px;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: 12px;
}

[data-theme="dark"] {
  --bg: #1a1a1a;
  --bg-secondary: #2a2a2a;
  --text: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border: #3a3a3a;
  --hover: #333333;
  --accent: #ffffff;
  --accent-text: #000000;
  --danger: #e74c3c;
  --shadow: 0 4px 16px rgba(0,0,0,0.3);
  --glass-bg: rgba(40, 40, 40, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.3s ease, color 0.3s ease;
  height: 100dvh;
  height: 100vh;
}

/* 隐藏工具类：用于控制显示/隐藏 */
.hidden {
  display: none;
}

/* ===== 导航栏 ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  flex-shrink: 0;
  z-index: 30;
  transition: background 0.3s ease, border-color 0.3s ease;
  gap: 0.5rem;
}
.navbar .logo { font-size: 1.2rem; font-weight: 700; letter-spacing: 3px; cursor: pointer; color: var(--text); white-space: nowrap; }
.navbar .user-area { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; white-space: nowrap; }
.navbar .user-area .avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-text); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 600; }
.btn { padding: 0.35rem 0.75rem; border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text); font-size: 0.8rem; cursor: pointer; border-radius: 6px; transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease; white-space: nowrap; }
.btn:hover { background: var(--hover); }
.btn:active { background: var(--bg-secondary); }
.btn-dark { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn-dark:hover { background: var(--text-secondary); }
.btn-outline { background: transparent; border: 1px solid var(--border); }
.btn-outline:hover { background: var(--hover); }
.icon-btn { background: none; border: none; cursor: pointer; color: var(--text); font-size: 1.2rem; padding: 0.25rem; display: inline-flex; align-items: center; justify-content: center; transition: transform 0.15s, color 0.2s ease; }
.icon-btn:hover { transform: scale(1.15); }
.icon-btn.small { font-size: 1rem; }
.icon-btn.play-main { font-size: 1.8rem; }
.icon-btn.active { color: var(--accent); }
#mobile-fav-btn { display: none; }

/* 帮助按钮 */
.help-btn { background: none; border: none; cursor: pointer; color: var(--text); font-size: 1.2rem; padding: 0.25rem; display: inline-flex; align-items: center; justify-content: center; }

/* 法律声明按钮（移动端） */
.legal-btn {
  display: none;
  background: rgba(128, 128, 128, 0.3);
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text);
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}
.legal-btn:hover { background: rgba(128, 128, 128, 0.5); }

/* VIP 徽章 */
.vip-badge { display: inline-block; padding: 0.2em 0.6em; border-radius: 12px; font-size: 0.7rem; font-weight: 600; margin-left: 0.5rem; border: 1px solid transparent; vertical-align: middle; transition: all 0.3s ease; }
.vip-0 { background: #d0ebff; color: #004085; border-color: #b8daff; }
.vip-1 { background: #ffeeba; color: #856404; border-color: #ffeeba; }
.vip-2 { background: #1a1a1a; color: #ffd700; border-color: #ffd700; }

/* ===== 主布局 ===== */
.main { display: flex; flex: 1; overflow: hidden; position: relative; }

/* ===== 左侧面板 ===== */
.left-panel { flex: 1; display: flex; flex-direction: column; min-width: 0; border-right: 1px solid var(--border); transition: border-color 0.3s ease; z-index: 1; position: relative; }

.search-area { display: flex; gap: 0.5rem; padding: 0.75rem; border-bottom: 1px solid var(--border); flex-shrink: 0; background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); transition: border-color 0.3s ease, background 0.3s ease; }
.search-area input { flex: 1; padding: 0.55rem 1rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; outline: none; background: var(--bg-secondary); color: var(--text); transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease; min-width: 0; }
.search-area input:focus { background: var(--bg); border-color: var(--text-secondary); }

.song-list { flex: 1; overflow-y: auto; padding: 0.25rem 0; }
.song-item { display: flex; align-items: center; padding: 0.55rem 0.75rem; cursor: pointer; transition: background 0.2s ease; gap: 0.75rem; }
.song-item:hover { background: var(--hover); }
.song-item.playing { background: var(--bg-secondary); }
.song-item .index { width: 24px; text-align: center; font-size: 0.85rem; color: var(--text-secondary); flex-shrink: 0; }
.song-item.playing .index { color: var(--accent); font-weight: 700; }
.song-item .info { flex: 1; min-width: 0; }
.song-item .info .name { font-size: 0.95rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.song-item .info .meta { font-size: 0.8rem; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.song-item .fav-btn, .song-item .dl-btn { background: none; border: none; font-size: 1rem; cursor: pointer; color: var(--text-secondary); transition: color 0.2s ease, transform 0.15s; padding: 0.25rem; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; }
.song-item .fav-btn { font-size: 1.2rem; }
.song-item .fav-btn:hover { transform: scale(1.2); }
.song-item .dl-btn:hover { transform: scale(1.2); }
.song-item .fav-btn.active { color: var(--accent); }

/* 歌曲封面 */
.song-cover { width: 40px; height: 40px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.fav-cover { width: 32px; height: 32px; border-radius: 4px; object-fit: cover; flex-shrink: 0; }

/* ===== 右侧收藏面板 ===== */
.right-panel { width: var(--right-panel-width, 280px); flex-shrink: 0; display: flex; flex-direction: column; border-left: 1px solid var(--border); background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); transition: transform 0.3s ease, border-color 0.3s ease; z-index: 20; }
.right-panel .panel-title { padding: 0.75rem; font-weight: 600; font-size: 0.9rem; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; color: var(--text); gap: 0.5rem; }
.right-panel .panel-title .count { font-size: 0.75rem; color: var(--text-secondary); font-weight: 400; }
.right-panel .close-btn { display: none; background: none; border: none; color: var(--text-secondary); font-size: 1.2rem; cursor: pointer; }
.right-panel .back-btn { display: none; background: none; border: none; color: var(--text); font-size: 1.2rem; cursor: pointer; padding: 0 0.25rem; line-height: 1; }

/* 收藏夹列表 */
.playlist-list { flex: 1; overflow-y: auto; padding: 0.25rem 0; }
.playlist-item { display: flex; align-items: center; padding: 0.6rem 0.75rem; cursor: pointer; gap: 0.5rem; transition: background 0.2s ease; }
.playlist-item:hover { background: var(--hover); }
.playlist-item .playlist-name { flex: 1; font-size: 0.9rem; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.playlist-item .playlist-count { font-size: 0.75rem; color: var(--text-secondary); margin-right: 0.25rem; }
.playlist-item .playlist-actions { display: flex; gap: 0.25rem; }
.playlist-item .action-btn { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 0.9rem; padding: 0.1rem 0.25rem; transition: color 0.2s ease, transform 0.15s; }
.playlist-item .action-btn:hover { color: var(--accent); transform: scale(1.1); }
.playlist-item .action-btn.delete:hover { color: var(--danger); }

/* 新建收藏夹区域 */
.new-playlist-area { padding: 0.5rem 0.75rem; border-top: 1px solid var(--border); flex-shrink: 0; }
.new-playlist-area .btn { width: 100%; }

/* 歌曲列表（在收藏夹内） */
.favorites-list { flex: 1; overflow-y: auto; padding: 0.25rem 0; }
.favorites-list .fav-item { display: flex; align-items: center; padding: 0.5rem 0.75rem; cursor: pointer; gap: 0.5rem; transition: background 0.2s ease; }
.favorites-list .fav-item:hover { background: var(--hover); }
.favorites-list .fav-item .fav-name { flex: 1; font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.favorites-list .fav-item .fav-artist { font-size: 0.75rem; color: var(--text-secondary); }
.favorites-list .fav-item .remove-btn, .favorites-list .fav-item .dl-btn { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 1rem; padding: 0.25rem; transition: color 0.2s ease; display: inline-flex; align-items: center; justify-content: center; }
.favorites-list .fav-item .remove-btn:hover { color: var(--danger); }
.favorites-list .fav-item .dl-btn:hover { color: var(--accent); }
.empty-hint { color: var(--text-secondary); font-size: 0.85rem; text-align: center; padding: 1.5rem 0; }

/* ===== 播放器 ===== */
.player { border-top: 1px solid var(--border); background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); flex-shrink: 0; display: flex; flex-direction: column; transition: background 0.3s ease, border-color 0.3s ease; z-index: 40; }

/* 歌词小面板（桌面端默认） */
.lyrics-panel { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; border-bottom: none; background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); position: relative; }
.lyrics-panel.open { max-height: 260px; border-bottom: 1px solid var(--border); }
.lyrics-content { padding: 1rem; text-align: center; font-size: 0.9rem; color: var(--text-secondary); overflow-y: auto; max-height: 240px; scroll-behavior: smooth; }
.lyrics-content .lyric-line { padding: 0.25rem 0; cursor: pointer; transition: color 0.2s ease, font-size 0.2s ease; line-height: 1.6; }
.lyrics-content .lyric-line:hover { color: var(--text); }
.lyrics-content .lyric-line.current { color: var(--accent); font-weight: 700; font-size: 1rem; }
.lyrics-content .no-lyrics { padding: 1.5rem 0; font-size: 0.85rem; }

/* 全屏按钮 */
.lyrics-fullscreen-btn { position: absolute; top: 0.5rem; right: 1.5rem; background: none; border: none; font-size: 1.2rem; cursor: pointer; color: var(--text-secondary); z-index: 10; display: none; transition: color 0.2s ease, transform 0.15s; }
.lyrics-fullscreen-btn:hover { color: var(--accent); transform: scale(1.2); }
.lyrics-panel.open .lyrics-fullscreen-btn { display: inline-block; }

/* 全屏歌词浮层 */
#lyrics-overlay { position: fixed; left: 0; right: var(--right-panel-width, 280px); top: calc(var(--navbar-height, 52px) + var(--search-height, 50px)); bottom: var(--player-controls-height, 70px); background: var(--bg); z-index: 1000; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 20px; overflow: hidden; }
#lyrics-overlay-close { position: absolute; top: 10px; right: 40px; font-size: 1.5rem; background: none; border: none; cursor: pointer; color: var(--text); }
#lyrics-overlay-content { width: 100%; max-height: 100%; overflow-y: auto; text-align: center; font-size: 1.2rem; color: var(--text-secondary); }
#lyrics-overlay-content .lyric-line { padding: 0.25rem 0; cursor: pointer; }
#lyrics-overlay-content .lyric-line.current { color: var(--accent); font-weight: 700; }

/* 移动端全屏歌词浮层覆盖整个左侧区域 */
@media (max-width: 768px) { #lyrics-overlay { right: 0; } }

/* 收藏夹选择弹窗 */
.fav-select-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.3);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  z-index: 2100; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
}
.fav-select-overlay.show { opacity: 1; pointer-events: auto; }
.fav-select-dialog {
  background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border); border-radius: 16px;
  box-shadow: var(--shadow); width: 320px; max-width: 90vw;
  padding: 1.5rem; text-align: center;
}
.fav-select-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.fav-select-list { max-height: 300px; overflow-y: auto; margin-bottom: 1rem; text-align: left; }
.fav-select-item { display: flex; align-items: center; padding: 0.5rem 0.25rem; gap: 0.5rem; cursor: pointer; }
.fav-select-item label { flex: 1; cursor: pointer; color: var(--text); }
.fav-select-item input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; cursor: pointer; }
.fav-select-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* 帮助/设置弹窗 */
.help-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 2500; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
.help-overlay.show { opacity: 1; pointer-events: auto; }
.help-dialog, .settings-dialog { background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); border: 1px solid var(--glass-border); border-radius: 16px; box-shadow: var(--shadow); width: 360px; max-width: 90vw; padding: 2rem; text-align: center; max-height: 80vh; overflow-y: auto; }
.help-dialog .help-title, .settings-dialog .settings-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.help-dialog .help-content { font-size: 0.95rem; color: var(--text-secondary); text-align: left; }
.help-dialog .help-faq { margin-bottom: 0.5rem; }
.help-dialog .help-question, .help-dialog .help-answer { line-height: 1.6; }
.help-dialog .help-close, .settings-dialog .help-close { margin-top: 1.5rem; padding: 0.5rem 1.5rem; border: 1px solid var(--border); background: var(--bg-secondary); border-radius: 8px; cursor: pointer; font-size: 0.9rem; }
.settings-dialog .setting-item { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.5rem; }
.settings-dialog .setting-label { font-size: 0.95rem; color: var(--text); }
.settings-dialog .setting-desc { font-size: 0.8rem; color: var(--text-secondary); text-align: left; margin-bottom: 1rem; }
.settings-dialog .settings-divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.settings-dialog .help-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.settings-dialog .help-content { font-size: 0.95rem; color: var(--text-secondary); text-align: left; }
.settings-dialog .help-faq { margin-bottom: 0.5rem; }
.settings-dialog .help-question, .settings-dialog .help-answer { line-height: 1.6; }

/* 提前传输歌词滑动条 */
.setting-control {
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
}
.offset-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.offset-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

/* 帮助按钮（在设置弹窗内） */
#show-help-btn {
  width: 100%;
  margin: 1rem 0;
}

/* 清除缓存按钮 */
#clear-cache-btn {
  width: 100%;
  margin: 0.5rem 0 1rem 0;
}

/* 开关样式 */
.switch { position: relative; display: inline-block; width: 48px; height: 26px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border); transition: 0.3s; border-radius: 26px; }
.slider:before { position: absolute; content: ""; height: 20px; width: 20px; left: 3px; bottom: 3px; background-color: var(--bg-secondary); transition: 0.3s; border-radius: 50%; }
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(22px); }

/* 播放器控制条 */
.player-controls { display: flex; align-items: center; gap: 0.75rem; padding: 0.5rem 1rem; flex-wrap: wrap; }
.player-controls .song-detail { width: 160px; min-width: 100px; flex: 1 0 auto; }
.player-controls .song-detail .player-name { font-weight: 600; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.player-controls .song-detail .player-artist { font-size: 0.75rem; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-controls .ctrl-group { display: flex; align-items: center; gap: 0.5rem; flex: 0 0 auto; }
.progress-area { display: flex; align-items: center; gap: 0.5rem; flex: 1 1 100%; order: 3; width: 100%; margin-top: 0.25rem; }
.progress-area .time { font-size: 0.75rem; color: var(--text-secondary); min-width: 35px; text-align: center; }
.progress-slider { -webkit-appearance: none; appearance: none; flex: 1; height: 4px; background: var(--border); border-radius: 2px; outline: none; cursor: pointer; }
.progress-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); cursor: pointer; }
.volume-group { display: flex; align-items: center; gap: 0.25rem; width: 100px; flex: 0 0 auto; }
.volume-slider { -webkit-appearance: none; appearance: none; width: 60px; height: 3px; background: var(--border); border-radius: 2px; outline: none; cursor: pointer; }
.volume-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); cursor: pointer; }

/* 下载模态框 */
.download-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 2000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
.download-overlay.show { opacity: 1; pointer-events: auto; }
.download-dialog { background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); border: 1px solid var(--glass-border); border-radius: 16px; box-shadow: var(--shadow); width: 320px; max-width: 90vw; padding: 1.5rem; text-align: center; }
.download-dialog .dialog-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1.5rem; color: var(--text); word-break: break-all; }
.download-dialog .dialog-btns { display: flex; flex-direction: column; gap: 0.75rem; }
.download-dialog .dialog-btn { padding: 0.65rem 1rem; border: 1px solid var(--border); background: var(--bg-secondary); color: var(--text); font-size: 0.95rem; cursor: pointer; border-radius: 8px; transition: background 0.2s ease; }
.download-dialog .dialog-btn:hover { background: var(--hover); }
.download-dialog .dialog-cancel { margin-top: 0.75rem; padding: 0.5rem; background: none; border: none; color: var(--text-secondary); font-size: 0.85rem; cursor: pointer; text-decoration: underline; }

/* 登录/注册 */
.auth-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); z-index: 100; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.auth-overlay.hidden { display: none; }
.auth-card { width: 100%; max-width: 380px; padding: 2rem 1.5rem; border: 1px solid var(--glass-border); border-radius: 16px; background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur)); box-shadow: var(--shadow); text-align: center; margin-bottom: 70px; }
.auth-card .auth-logo { font-size: 2rem; font-weight: 700; letter-spacing: 6px; margin-bottom: 0.5rem; color: var(--text); }
.auth-card .auth-subtitle { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.auth-card input { width: 100%; padding: 0.65rem 1rem; margin-bottom: 0.75rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; outline: none; background: var(--bg-secondary); color: var(--text); }
.auth-card input:focus { background: var(--bg); border-color: var(--text-secondary); }
.auth-card .btn { width: 100%; padding: 0.65rem; margin-top: 0.5rem; font-size: 0.95rem; font-weight: 600; letter-spacing: 2px; }
.auth-card .auth-toggle { margin-top: 1rem; font-size: 0.85rem; color: var(--text-secondary); cursor: pointer; text-decoration: underline; }
.auth-card .auth-error { color: var(--danger); font-size: 0.85rem; margin-top: 0.5rem; min-height: 1.2em; }

/* 法律声明（登录卡片内） */
.legal-notice {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
  text-align: center;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}
.legal-notice p { margin: 0.2rem 0; }

/* 法律声明弹窗 */
.legal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); backdrop-filter: blur(4px); z-index: 2600; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.2s ease; }
.legal-overlay.show { opacity: 1; pointer-events: auto; }
.legal-dialog { background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); border: 1px solid var(--glass-border); border-radius: 16px; box-shadow: var(--shadow); width: 340px; max-width: 90vw; padding: 1.5rem; text-align: center; }
.legal-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.legal-content p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; margin: 0.3rem 0; }
.legal-dialog .btn { margin-top: 1rem; width: 100%; }

/* 底部提示条 */
.footer-notice {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--accent-text);
  padding: 0.3rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  z-index: 2000;
  opacity: 0.9;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: var(--shadow);
  max-width: 90vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 登录遮罩显示时隐藏底部提示条 */
.auth-overlay:not(.hidden) ~ .footer-notice { display: none; }

/* Toast */
.toast { position: fixed; bottom: 100px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); color: var(--text); border: 1px solid var(--glass-border); padding: 0.75rem 1.5rem; border-radius: 24px; font-size: 0.9rem; opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease; z-index: 300; max-width: 80vw; text-align: center; box-shadow: var(--shadow); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 响应式 */
@media (max-width: 768px) {
  .navbar { padding: 0.5rem 0.75rem; }
  .navbar .logo { font-size: 1rem; letter-spacing: 2px; }
  .navbar .user-area .avatar { width: 24px; height: 24px; font-size: 0.7rem; }
  .navbar .user-area span { display: none; }
  .btn { padding: 0.3rem 0.6rem; font-size: 0.75rem; }
  #mobile-fav-btn { display: inline-flex; }
  .right-panel { position: absolute; top: 0; right: -280px; height: 100%; width: 280px; box-shadow: var(--shadow); }
  .right-panel.open { right: 0; }
  .right-panel .close-btn { display: block; }
  .player-controls { gap: 0.5rem; padding: 0.5rem 0.75rem; }
  .player-controls .song-detail { width: 120px; }
  .player-controls .ctrl-group .icon-btn.small { font-size: 1rem; }
  .player-controls .play-main { font-size: 1.6rem; }
  .progress-area { order: 3; width: 100%; margin-top: 0.25rem; }
  .volume-group { display: none; }

  /* 修复：歌词面板绝对定位，不再挤压主内容 */
  .player { position: relative; }
  .lyrics-panel {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    z-index: 50;
    transition: max-height 0.35s ease;
    border-bottom: none;
  }
  .lyrics-panel.open { max-height: 200px; border-bottom: 1px solid var(--border); }
  .lyrics-content { max-height: 180px; }

  /* 移动端提示条：1秒后消失 */
  .footer-notice {
    position: fixed;
    bottom: 90px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    padding: 0.3rem 1rem;
    max-width: 90vw;
    animation: footerNoticeHide 1s ease 1s forwards;
  }
  @keyframes footerNoticeHide {
    0% { opacity: 0.9; transform: translateX(-50%); }
    100% { opacity: 0; transform: translateX(-50%) translateY(10px); visibility: hidden; }
  }

  .legal-btn { display: inline-flex; margin-left: 0.5rem; }
  .auth-card { margin-bottom: 70px; }
}

@media (max-width: 480px) {
  .song-item { padding: 0.45rem 0.5rem; gap: 0.5rem; }
  .song-item .index { width: 20px; font-size: 0.75rem; }
  .song-item .info .name { font-size: 0.9rem; }
  .song-item .info .meta { font-size: 0.75rem; }
  .search-area { padding: 0.5rem; }
  .search-area input { font-size: 0.9rem; padding: 0.5rem 0.75rem; }
}