:root {
  color-scheme: light;
  --ink: #211d19;
  --muted: #6d6358;
  --paper: #f8f0e4;
  --line: rgba(33, 29, 25, 0.14);
  --accent: #b8422b;
  --gold: #c9943f;
  --green: #3e6b58;
  --shadow: 0 24px 80px rgba(72, 45, 24, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 8%, rgba(201, 148, 63, 0.24), transparent 26rem),
    linear-gradient(135deg, #f9f1e8 0%, #edf2e7 52%, #f5e7dc 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

.app-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 24px;
}

.hero {
  min-height: calc(100vh - 48px);
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(300px, 0.78fr);
  gap: 34px;
  align-items: center;
}

.cover-wrap {
  position: relative;
  aspect-ratio: 4 / 5;
  min-height: 420px;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
  background: #efe2d2;
}

.cover,
.cover-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.cover {
  object-fit: cover;
  object-position: center center;
  z-index: 2;
}

.cover-fallback {
  background:
    linear-gradient(160deg, rgba(184, 66, 43, 0.9), rgba(201, 148, 63, 0.72) 42%, rgba(62, 107, 88, 0.72)),
    url("https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=1200&q=75");
  background-size: cover;
  background-position: center;
}

.content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.date {
  margin: 0;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-family: "STSong", "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  font-size: clamp(58px, 8vw, 108px);
  line-height: 0.94;
  letter-spacing: 0;
}

.brand-lockup {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand-cn {
  margin: 0;
  color: var(--accent);
  font-family: "Hannotate SC", "Xingkai SC", "Kaiti SC", "STKaiti", "Songti SC", serif;
  font-size: clamp(25px, 3.8vw, 40px);
  font-weight: 700;
  letter-spacing: 0;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  min-height: 64px;
  max-width: 430px;
  font-family: "Kaiti SC", "STKaiti", "Songti SC", serif;
  font-size: 22px;
  line-height: 1.45;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(116px, 1fr));
  gap: 12px;
  width: min(360px, 100%);
}

.stats div {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.stats span {
  display: block;
  font-size: 28px;
  font-weight: 800;
}

.stats small {
  color: var(--muted);
  font-size: 13px;
}

.start-button {
  width: min(320px, 100%);
  min-height: 58px;
  border: 0;
  border-radius: 8px;
  background: var(--ink);
  color: #fffaf4;
  font-size: 19px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(33, 29, 25, 0.22);
}

.start-button:active {
  transform: translateY(1px);
}

.player-zone {
  margin: 4px 0 26px;
  aspect-ratio: 16 / 9;
  background: rgba(33, 29, 25, 0.08);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

#player,
#player iframe {
  width: 100%;
  height: 100%;
}

.playlist {
  padding-bottom: 42px;
}

.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 12px;
}

.section-title h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0;
}

.section-title span {
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.track {
  display: grid;
  grid-template-columns: 30px 40px 1fr auto 32px;
  gap: 10px;
  align-items: center;
  min-height: 78px;
  border-bottom: 1px solid var(--line);
}

.track.dragging {
  opacity: 0.5;
  background: rgba(184, 66, 43, 0.06);
}

.track-body {
  cursor: pointer;
}

.track-body:hover .track-title {
  color: var(--accent);
}

.track-handle,
.track-remove {
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
}

.track-handle {
  touch-action: none;
  cursor: grab;
  font-size: 18px;
  padding: 14px 6px;
}

.track-handle:active {
  cursor: grabbing;
}

.track-remove {
  font-size: 22px;
  line-height: 1;
  padding: 10px;
}

.track-remove:hover {
  color: var(--accent);
}

.track-index {
  color: var(--gold);
  font-weight: 900;
}

.track-title {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.3;
}

.track-note {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.track-time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.track.active .track-title {
  color: var(--accent);
}

.playlist-hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.playlist-actions {
  padding: 16px 0 4px;
}

.add-track-button {
  width: 100%;
  min-height: 48px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: none;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.add-track-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.track-picker {
  position: fixed;
  inset: 0;
  background: rgba(33, 29, 25, 0.4);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 20;
}

.track-picker[hidden] {
  display: none;
}

.track-picker-panel {
  width: min(560px, 100%);
  max-height: 80vh;
  background: var(--paper);
  border-radius: 16px 16px 0 0;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.track-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.track-picker-header h3 {
  margin: 0;
  font-size: 18px;
}

.close-picker-button {
  border: 0;
  background: none;
  font-size: 26px;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  padding: 4px 8px;
}

.track-picker-list {
  overflow-y: auto;
  max-height: 60vh;
  padding: 8px 20px 24px;
}

.track-picker-group {
  margin: 16px 0 6px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.track-picker-group:first-child {
  margin-top: 4px;
}

.track-picker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.track-picker-row .track-title {
  font-size: 15px;
}

.track-picker-row .track-note {
  margin: 2px 0 0;
}

.track-add-button {
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: none;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 12px;
  cursor: pointer;
  white-space: nowrap;
}

.track-add-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.track-picker-empty {
  color: var(--muted);
  font-size: 14px;
  padding: 12px 0;
}

@media (max-width: 760px) {
  .app-shell {
    padding: 16px;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 10px;
  }

  .cover-wrap {
    min-height: auto;
    aspect-ratio: 1 / 1;
    max-height: 40vh;
  }

  .cover {
    object-position: center 32%;
  }

  h1 {
    font-size: 56px;
  }

  .subtitle {
    min-height: 52px;
    font-size: 18px;
  }

  .content {
    gap: 13px;
  }

  .stats div {
    padding: 10px 0;
  }

  .track {
    grid-template-columns: 22px 28px 1fr 30px;
    grid-template-rows: auto auto;
  }

  .track-handle {
    grid-column: 1;
    grid-row: 1;
  }

  .track-index {
    grid-column: 2;
    grid-row: 1;
  }

  .track-body {
    grid-column: 3;
    grid-row: 1;
  }

  .track-remove {
    grid-column: 4;
    grid-row: 1;
  }

  .track-time {
    grid-column: 3;
    grid-row: 2;
    justify-self: start;
    padding-bottom: 12px;
  }
}

/* 自托管音频条（播放古琴/经咒时显示） */
#audio-player {
  width: 100%;
  margin-top: 10px;
}