:root {
  --accent: #6c5ce7;
  --accent-soft: rgba(108, 92, 231, 0.18);
  --bg: #0d0f14;
  --bg-elev: rgba(22, 24, 32, 0.78);
  --bg-input: rgba(15, 17, 23, 0.6);
  --panel: rgba(20, 22, 28, 0.72);
  --panel-solid: #15171d;
  --text: #f1f4fa;
  --text-dim: #c2c8d3;
  --text-faint: #8a93a3;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.24);
  --hover: rgba(255, 255, 255, 0.05);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --radius: 16px;
}

/* 浅色主题覆盖 */
[data-theme="light"] {
  --accent: #6c5ce7;
  --accent-soft: rgba(108, 92, 231, 0.14);
  --bg: #f4f6fb;
  --bg-elev: rgba(255, 255, 255, 0.82);
  --bg-input: #ffffff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-solid: #ffffff;
  --text: #1a1d27;
  --text-dim: #6b7180;
  --text-faint: #9aa3b2;
  --line: rgba(15, 20, 35, 0.08);
  --line-strong: rgba(15, 20, 35, 0.16);
  --hover: rgba(15, 20, 35, 0.04);
  --shadow: 0 8px 24px rgba(15, 20, 35, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 背景层 */
#bg-layer {
  position: fixed; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  transition: background-image 0.6s ease, opacity 0.6s ease;
  opacity: 0.55;
}
#bg-overlay {
  position: fixed; inset: 0; z-index: 0;
  background: radial-gradient(120% 120% at 50% 0%, rgba(14,15,19,0.2), rgba(14,15,19,0.85));
}

/* 频谱画布：铺满全屏，置于最顶层（最高优先级，始终可见，且不拦截点击） */
#spectrum {
  position: fixed; inset: 0; z-index: 9999;
  width: 100%; height: 100%;
  pointer-events: none;
}

/* 屏幕中央歌词区块：上一段 + 当前 + 下一段 */
#lyrics-box {
  position: fixed; inset: 0; z-index: 30;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 10px; text-align: center;
  pointer-events: none;
  padding: 0 6vw;
}
.lyric-line {
  max-width: 88vw;
  line-height: 1.3;
  word-break: break-word;
  transition: opacity .25s, transform .25s, color .25s;
}
.lyric-prev, .lyric-next {
  font-size: 18px;
  color: var(--text-dim);
  opacity: 0.45;
}
.lyric-cur {
  font-size: 30px; font-weight: 700;
  color: var(--text);
  opacity: 1;
  text-shadow: 0 2px 18px rgba(0,0,0,0.55);
  transform: scale(1.02);
}
@media (max-width: 720px) {
  .lyric-prev, .lyric-next { font-size: 15px; }
  .lyric-cur { font-size: 23px; }
}
/* 浅色主题下中央亮色文字需加深描边以保证可读 */
[data-theme="light"] .lyric-cur {
  text-shadow: 0 2px 14px rgba(255,255,255,0.6);
}
[data-theme="light"] .lyric-prev, [data-theme="light"] .lyric-next {
  color: #4a5160;
}

/* 左上角登录状态 */
#auth-panel {
  position: fixed; top: 18px; left: 18px; z-index: 20;
  display: flex; align-items: center; gap: 10px;
  background: var(--panel); backdrop-filter: blur(14px);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px 6px 6px; max-width: 320px;
}
#auth-panel .ava {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent-soft); object-fit: cover;
  border: 1px solid var(--line);
}
#auth-panel .meta { line-height: 1.2; overflow: hidden; }
#auth-panel .name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#auth-panel .sub { font-size: 11px; color: var(--text-dim); white-space: nowrap; }
.badge-admin {
  display: inline-block; font-size: 10px; padding: 1px 6px; border-radius: 6px;
  background: var(--accent); color: #fff; margin-left: 6px; vertical-align: middle;
}
.auth-btn {
  border: 1px solid var(--line); background: transparent; color: var(--text);
  padding: 7px 14px; border-radius: 999px; cursor: pointer; font-size: 13px;
  transition: 0.15s;
}
.auth-btn:hover { border-color: var(--accent); color: var(--accent); }
.auth-btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.auth-btn.primary:hover { filter: brightness(1.1); color: #fff; }

/* 主布局 */
#app {
  position: relative; z-index: 10;
  height: 100%; display: flex; flex-direction: column;
  padding: 90px 26px 22px; gap: 18px;
}
#now-playing {
  display: flex; gap: 22px; align-items: center;
  background: var(--panel); backdrop-filter: blur(16px);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 24px; max-width: 760px; margin: 0 auto;
  transition: 0.6s;
}
#cover {
  width: 96px; height: 96px; border-radius: 14px; object-fit: cover;
  background: var(--accent-soft); border: 1px solid var(--line); flex: none;
}
.np-info { flex: 1; min-width: 0; }
.np-title { font-size: 20px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.np-artist { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

/* 进度与控制 */
#controls {
  max-width: 760px; margin: 0 auto; width: 100%;
  background: var(--panel); backdrop-filter: blur(16px);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 20px;
}
.seek-row { display: flex; align-items: center; gap: 12px; }
.time { font-size: 12px; color: var(--text-dim); width: 44px; text-align: center; font-variant-numeric: tabular-nums; }
input[type="range"].seek {
  -webkit-appearance: none; appearance: none; flex: 1; height: 6px;
  border-radius: 999px; background: var(--line); outline: none; cursor: pointer;
}
input[type="range"].seek::-webkit-slider-thumb {
  -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: 2px solid #fff;
}
input[type="range"].seek::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%; background: var(--accent);
  cursor: pointer; border: 2px solid #fff;
}
.btns { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 12px; }
.round {
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line);
  background: transparent; color: var(--text); display: grid; place-items: center;
  cursor: pointer; transition: 0.15s;
}
.round:hover { border-color: var(--accent); color: var(--accent); }
.round.play { width: 56px; height: 56px; background: var(--accent); border-color: var(--accent); color: #fff; }
.round.play:hover { filter: brightness(1.1); color: #fff; }
.round svg { width: 20px; height: 20px; fill: currentColor; }
.round.play svg { width: 24px; height: 24px; }
.vol-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; justify-content: center; }
.vol-row input[type="range"] { width: 160px; -webkit-appearance: none; height: 4px; border-radius: 999px; background: var(--line); }
.vol-row input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); cursor: pointer; }

/* 歌单 */
#playlist-wrap {
  flex: 1; min-height: 0; max-width: 760px; margin: 0 auto; width: 100%;
  background: var(--panel); backdrop-filter: blur(16px);
  border: 1px solid var(--line); border-radius: var(--radius);
  display: flex; flex-direction: column; overflow: hidden;
}
#playlist-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
#playlist-head h3 { font-size: 14px; font-weight: 600; }
#search { flex: 1; background: var(--bg); border: 1px solid var(--line); color: var(--text); border-radius: 999px; padding: 7px 14px; font-size: 13px; outline: none; }
#search:focus { border-color: var(--accent); }
#playlist { overflow-y: auto; padding: 6px; flex: 1; }
.track {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border-radius: 10px; cursor: pointer; transition: 0.12s;
}
.track:hover { background: var(--accent-soft); }
.track.active { background: var(--accent-soft); border: 1px solid var(--accent); }
.track .t-idx { width: 22px; text-align: center; color: var(--text-dim); font-size: 12px; }
.track .t-cover { width: 38px; height: 38px; border-radius: 8px; object-fit: cover; background: var(--accent-soft); }
.track .t-main { flex: 1; min-width: 0; }
.track .t-title { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track .t-sub { font-size: 12px; color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track .t-dur { font-size: 12px; color: var(--text-dim); font-variant-numeric: tabular-nums; }

/* 模态框 */
.modal-mask {
  position: fixed; inset: 0; z-index: 50; background: rgba(0,0,0,0.6);
  display: none; align-items: center; justify-content: center; backdrop-filter: blur(4px);
}
.modal-mask.show { display: flex; }
.modal {
  width: 360px; max-width: 92vw; background: var(--panel-solid);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
.modal h2 { font-size: 18px; margin-bottom: 16px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 6px; }
.field input {
  width: 100%; background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 10px; padding: 10px 12px; font-size: 14px; outline: none;
}
.field input:focus { border-color: var(--accent); }
.modal .switch-link { font-size: 12px; color: var(--text-dim); margin-top: 12px; text-align: center; }
.modal .switch-link a { color: var(--accent); cursor: pointer; }
.modal .row { display: flex; gap: 10px; }
.modal .row .auth-btn { flex: 1; text-align: center; }

/* 设置面板 */
#settings-panel .field { display: flex; align-items: center; justify-content: space-between; }
#settings-panel input[type="color"] { width: 44px; height: 30px; border: none; background: none; cursor: pointer; }
.seg-row { display: flex; align-items: center; gap: 10px; }
.seg-row input[type="range"] { flex: 1; }
.seg-row .val { font-size: 13px; width: 42px; text-align: right; color: var(--text-dim); }

/* 顶右工具 */
#tools { position: fixed; top: 18px; right: 18px; z-index: 20; display: flex; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line);
  background: var(--panel); color: var(--text); display: grid; place-items: center;
  cursor: pointer; backdrop-filter: blur(10px); transition: 0.15s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn svg { width: 20px; height: 20px; fill: currentColor; }

/* 提示 */
#toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(20px);
  z-index: 80; background: var(--panel-solid); border: 1px solid var(--line);
  color: var(--text); padding: 12px 20px; border-radius: 999px; font-size: 13px;
  opacity: 0; transition: 0.25s; pointer-events: none; max-width: 90vw;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }

.limited-note { font-size: 12px; color: #ffb454; margin-top: 8px; text-align: center; }

/* ============================================================
   浅色主题下：背景遮罩与播放控件的微调
   ============================================================ */
[data-theme="light"] #bg-overlay {
  background: radial-gradient(120% 120% at 50% 0%, rgba(255, 255, 255, 0.05), rgba(244, 246, 251, 0.75));
}
[data-theme="light"] #bg-layer { opacity: 0.35; filter: saturate(1.05); }
[data-theme="light"] .round.play { color: #fff; }
[data-theme="light"] input[type="range"].seek::-webkit-slider-thumb { border-color: var(--bg-elev-solid); }
[data-theme="light"] input[type="range"].seek::-moz-range-thumb { border-color: var(--bg-elev-solid); }
[data-theme="light"] .limited-note { color: #d97a00; }

/* ============================================================
   主题切换按钮（主页右上角工具栏）
   ============================================================ */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--text); display: grid; place-items: center;
  cursor: pointer; backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: 0.18s;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); transform: rotate(15deg); }
.theme-toggle svg { width: 18px; height: 18px; fill: currentColor; }
[data-theme="dark"]  .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"]  .theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun  { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }