/* tamma.info — design tokens per SPEC §6 (no ad-hoc colors) */
:root {
  --paper: #F6F1E7;
  --surface: #FBF8F2;
  --ink: #2B2118;
  --ink-soft: #6B5D4F;
  --accent: #9A4F12;
  --accent-warm: #D08A3E;
  --line: #E4DACB;
  --sage: #DDE2D2;
  --sand: #EADBC4;
  --ink-deep: #221A13;      /* player page background (dark for night listening) */
  --surface-dark: #33271D;  /* player panels */
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --serif: 'Noto Serif Thai', 'Noto Serif', serif;
  --sans: 'IBM Plex Sans Thai', 'Noto Sans Thai', sans-serif;
}
html[data-textsize="2"] { font-size: 18px; }
html[data-textsize="3"] { font-size: 21px; }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
}
.serif { font-family: var(--serif); }
a { color: var(--accent); }
a:hover { color: #7A3E0E; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px;
  clip: rect(0 0 0 0); clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 50;
  background: var(--ink); color: var(--surface); padding: 10px 16px;
  border-radius: var(--radius); text-decoration: none; transition: top .15s;
}
.skip-link:focus { top: 8px; }

/* ---------- layout shell ---------- */
.shell { display: flex; min-height: 100vh; }
.sidebar { display: none; }
.column { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; padding: 0 12px; background: var(--paper);
}
.logo { font-size: 22px; font-weight: 700; color: var(--ink); text-decoration: none; }
.logo-dot { color: var(--accent); }
.topbar-actions { display: flex; gap: 8px; }

.icon-btn {
  width: 44px; height: 44px; border-radius: 22px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none;
}
.back-btn { margin-left: -4px; }

main {
  flex: 1; padding: 4px 20px 110px; display: flex; flex-direction: column; gap: 18px;
}
.page-head { display: flex; align-items: center; gap: 8px; }
.page-head h1 { margin: 0; font-size: 24px; font-weight: 700; }

/* ---------- home ---------- */
.home-hero { margin: 6px 0 0; font-size: 24px; font-weight: 600; }
.random-card {
  background: var(--ink); color: var(--surface); border-radius: var(--radius-xl);
  padding: 20px; display: flex; align-items: center; gap: 16px;
}
.random-card-kicker { margin: 0; font-size: 13px; color: #E3B57E; letter-spacing: .5px; }
.random-card h2 { margin: 0; font-size: 22px; font-weight: 700; }
.random-card-desc { margin: 0; font-size: 14px; color: #E8DFD2; }
.random-card .chip-row { margin-top: 10px; }
.random-card .chip {
  background: var(--accent-warm); color: var(--ink); border: 0; font-weight: 600;
  text-decoration: none; display: inline-flex; align-items: center; height: 44px;
  padding: 0 16px; border-radius: 22px; font-size: 14px;
}
.dharma-wheel { display: none; flex-shrink: 0; }

.section-head { display: flex; justify-content: space-between; align-items: baseline; }
.section-head h2 { margin: 0; font-size: 18px; font-weight: 600; }

.teacher-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.teacher-card {
  display: flex; flex-direction: column; gap: 8px; padding: 14px;
  border-radius: 16px; border: 1px solid var(--line); text-decoration: none; color: var(--ink);
}
.teacher-card.sand { background: var(--surface); }
.teacher-avatar {
  width: 44px; height: 44px; border-radius: 22px; background: var(--sand);
  color: #7A3E0E; display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700;
}
.teacher-avatar.sage { background: var(--sage); color: #3F4A33; }
.teacher-name { font-size: 15px; font-weight: 600; }
.teacher-sub { font-size: 12px; color: #5A4C3F; }

.series-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.series-card {
  min-height: 90px; border-radius: 16px; padding: 14px; text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; justify-content: space-between; gap: 6px;
}
.series-card.sand { background: var(--sand); }
.series-card.sage { background: var(--sage); }
.series-card-name { font-size: 16px; font-weight: 600; }
.series-card-sub { font-size: 12px; color: #4B3F33; }

.continue-list { display: flex; flex-direction: column; gap: 8px; }
.continue-item {
  display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--line); text-decoration: none; color: var(--ink);
}
.continue-item .ci-title { font-size: 15px; font-weight: 500; }
.continue-item .ci-sub { font-size: 12px; color: var(--ink-soft); }
.ci-bar { height: 4px; border-radius: 2px; background: var(--line); overflow: hidden; }
.ci-bar > span { display: block; height: 4px; background: var(--accent); }

/* ---------- chips / filters ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  min-height: 44px; padding: 0 14px; display: inline-flex; align-items: center;
  border-radius: 22px; background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); font-size: 14px; text-decoration: none;
}
.filter-label { margin: 0 0 6px; font-size: 13px; font-weight: 600; color: var(--ink-soft); }
.filters { display: flex; flex-direction: column; gap: 6px; }
.filter-chip[aria-pressed="true"] {
  background: var(--ink); color: var(--surface); border-color: var(--ink); font-weight: 600;
}

/* ---------- random ---------- */
.random-stage {
  flex-grow: 1; border-radius: 24px; background: var(--ink); color: var(--surface);
  padding: 20px; min-height: 240px;
}
.random-pane { display: flex; flex-direction: column; justify-content: center; gap: 12px; height: 100%; }
#randomResult { align-items: center; text-align: center; }
#randomIntro, #randomEmpty { align-items: center; text-align: center; }
.random-art { width: 168px; height: 224px; display: flex; align-items: center; justify-content: center; }
.random-art svg, .random-art img { width: 100%; height: 100%; object-fit: contain; border-radius: 20px; }
.random-art img { object-fit: cover; border: 1px solid #4A3A2C; box-shadow: 0 4px 18px rgba(0,0,0,.35); }
.random-art svg { padding: 12px; box-sizing: border-box; }
.random-intro-text { margin: 0; font-size: 20px; font-weight: 600; line-height: 1.5; }
.random-intro-sub { margin: 0; font-size: 14px; color: #F0E6D8; line-height: 1.6; }
.random-empty-text { margin: 0; font-size: 16px; line-height: 1.6; color: #F0E6D8; text-align: center; }
.random-result-kicker { margin: 0; font-size: 13px; color: #EFC08A; letter-spacing: .5px; }
.random-result-title { margin: 0; font-size: 26px; font-weight: 700; line-height: 1.4; }
.random-result-teacher { margin: 0; font-size: 15px; color: #F5EDE1; }
.random-result-series { margin: 0; }
.random-result-series > span {
  display: inline-block; padding: 4px 12px; border-radius: 14px;
  background: #4A3A2C; font-size: 13px; color: #F5EDE1;
}
.random-result-dur { margin: 0; font-size: 13px; color: #E8DFD2; }
.random-result-actions { display: flex; gap: 10px; margin-top: 8px; align-items: stretch; }
.btn-primary {
  flex-grow: 1; min-height: 52px; border-radius: 26px; border: 0;
  background: var(--accent-warm); color: var(--ink-deep);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 16px; text-decoration: none;
}
.btn-ghost {
  min-height: 52px; padding: 0 18px; border-radius: 26px; border: 1px solid #6B5A48;
  background: transparent; color: var(--surface);
  display: inline-flex; align-items: center; font-weight: 600; text-decoration: none;
}
.btn-round {
  width: 52px; height: 52px; border-radius: 26px; border: 1px solid #6B5A48;
  background: transparent; color: var(--surface);
  display: inline-flex; align-items: center; justify-content: center;
}
.btn-spin {
  height: 60px; border-radius: 30px; border: 0; background: var(--accent); color: #fff;
  font-size: 18px; font-weight: 600; display: flex; align-items: center; justify-content: center; gap: 10px;
}
.random-options { display: flex; flex-direction: column; gap: 8px; }
.toggle-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 48px; padding: 0 14px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); font-size: 14px;
}
.toggle-track {
  width: 44px; height: 26px; border-radius: 13px; background: #B9AC9A;
  display: flex; align-items: center; padding: 3px; justify-content: flex-start;
}
.toggle-knob { width: 20px; height: 20px; border-radius: 10px; background: #fff; display: block; }
.toggle-row[aria-pressed="true"] .toggle-track { background: var(--accent); justify-content: flex-end; }

/* ---------- library / series ---------- */
.library-count, .teacher-summary { margin: 0; color: var(--ink-soft); font-size: 14px; }
.search-box { display: flex; flex-direction: column; gap: 6px; }
.search-input-wrap {
  height: 48px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px; padding: 0 14px;
}
.search-input-wrap input { flex-grow: 1; border: 0; background: transparent; font-size: 15px; color: var(--ink); outline: none; min-width: 0; }
.search-submit { margin-top: 4px; flex-grow: 0; }
.series-list { display: flex; flex-direction: column; }
.series-row { padding: 12px 0; border-bottom: 1px solid var(--line); }
.series-row-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.series-row-head h2 { margin: 0; font-size: 17px; font-weight: 600; }
.series-row-sub { margin: 4px 0 0; font-size: 13px; color: var(--ink-soft); }
.feed-link { font-size: 13px; white-space: nowrap; }

.subgroup { display: flex; flex-direction: column; gap: 4px; }
.subgroup-title { margin: 10px 0 4px; font-size: 17px; font-weight: 600; }
.track-list { list-style: none; margin: 0; padding: 0; }
.track-row {
  min-height: 64px; display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); padding: 6px 0;
}
.track-no { width: 28px; font-size: 14px; color: var(--ink-soft); flex-shrink: 0; }
.track-row-main { flex-grow: 1; display: flex; flex-direction: column; min-width: 0; }
.track-row-title { font-size: 15px; font-weight: 500; }
.track-row-sub { font-size: 12px; color: #5A4C3F; }
.track-row-dur { font-size: 13px; color: #5A4C3F; flex-shrink: 0; }

/* ---------- track page (dark) ---------- */
.track-page { --tc: var(--surface); }
.track-head .track-context { margin: 0; font-size: 13px; color: var(--ink-soft); }
.track-head h1 { margin: 4px 0; font-size: 26px; font-weight: 700; line-height: 1.4; }
.track-meta { margin: 0; font-size: 15px; color: var(--ink-soft); }

.player-card {
  background: var(--ink-deep); color: var(--surface); border-radius: var(--radius-xl);
  padding: 20px; display: flex; flex-direction: column; gap: 16px;
}
.player-seek { display: flex; flex-direction: column; gap: 8px; }
.player-seek input[type="range"] {
  width: 100%; height: 44px; margin: 0; accent-color: var(--accent-warm); background: transparent;
}
.player-times { display: flex; justify-content: space-between; font-size: 13px; color: #E8DFD2; }
.player-controls { display: flex; align-items: center; justify-content: space-between; padding: 0 8px; }
.player-side-btn {
  width: 56px; height: 56px; border: 0; background: transparent; color: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 11px;
}
.play-big {
  width: 84px; height: 84px; border-radius: 42px; border: 0;
  background: var(--accent-warm); color: var(--ink-deep);
  display: inline-flex; align-items: center; justify-content: center;
}
#playerBar .play-big { width: 44px; height: 44px; border-radius: 22px; }
#playerBar .play-big svg { width: 20px; height: 20px; }
.ic-pause { display: none; }
.playing .ic-play { display: none; }
.playing .ic-pause { display: block; }

.player-grid4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.pg-cell {
  min-height: 64px; border-radius: 14px; border: 0; background: var(--surface-dark); color: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  font-size: 12px; text-decoration: none; text-align: center; padding: 4px;
}
.pg-select {
  border: 0; background: transparent; color: var(--surface); font-size: 15px; font-weight: 600;
  font-family: inherit; min-width: 44px; text-align: center;
}
.pg-select option { color: var(--ink); }
.pg-big { font-size: 14px; font-weight: 600; color: inherit; }
.pg-label { font-size: 11px; color: #E8DFD2; }
.pg-link:visited .pg-big { color: inherit; }

.resume-box {
  border-radius: 14px; background: var(--surface-dark); padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.resume-box p { margin: 0; }
.resume-actions { display: flex; gap: 10px; }

.track-links { display: flex; flex-direction: column; gap: 10px; }
.track-sibling {
  display: flex; flex-direction: column; gap: 4px; min-height: 56px; padding: 10px 12px;
  border-radius: 14px; background: var(--surface); border: 1px solid var(--line);
  text-decoration: none; color: var(--ink); justify-content: center;
}
.ts-title { font-size: 15px; font-weight: 500; }
.ts-dur { font-size: 12px; color: var(--ink-soft); }
.btn-outline {
  height: 48px; border-radius: 24px; border: 1px solid var(--accent); color: var(--accent);
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 15px; font-weight: 600; text-decoration: none;
}

/* ---------- help ---------- */
.key-list div { display: flex; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.key-list dt { min-width: 90px; font-weight: 600; }
.key-list dd { margin: 0; }
kbd {
  background: var(--surface); border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 6px; padding: 2px 8px; font-family: var(--sans);
}
.help-list li { margin-bottom: 6px; }

/* ---------- mini player bar ---------- */
.playerbar[hidden] { display: none; }
.playerbar {
  position: fixed; left: 12px; right: 12px; bottom: calc(72px + 8px); z-index: 30;
  border-radius: 14px; background: var(--ink-deep); color: var(--surface);
  display: flex; flex-direction: column; gap: 0; padding: 4px 8px 6px;
}
.playerbar-row { display: flex; align-items: center; gap: 6px; width: 100%; }
.playerbar-info { flex-grow: 1; display: flex; flex-direction: column; text-decoration: none; color: var(--surface); min-width: 0; padding: 2px 0; }
.playerbar-title { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.playerbar-sub { font-size: 12px; color: #E8DFD2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#playerBar .icon-btn { border: 0; background: transparent; color: var(--surface); }
.pb-side {
  width: 44px; min-height: 44px; border: 0; background: transparent; color: var(--surface);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0; padding: 2px 0; border-radius: 8px;
}
.pb-15 { font-size: 10px; line-height: 1.2; color: #E8DFD2; }
.playerbar-seek { display: flex; align-items: center; gap: 8px; width: 100%; }
.playerbar-seek input[type="range"] { flex: 1; height: 24px; margin: 0; accent-color: var(--accent-warm); background: transparent; }
.pb-time { font-size: 11px; color: #E8DFD2; font-variant-numeric: tabular-nums; flex-shrink: 0; }

/* ---------- bottom nav ---------- */
.bottom-nav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 25; height: 72px;
  display: flex; border-top: 1px solid var(--line); background: var(--surface);
}
.bottom-nav a {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; text-decoration: none; color: var(--ink-soft); font-size: 12px; min-width: 44px;
}
.bottom-nav a.is-active { color: var(--accent); font-weight: 600; }

/* ---------- desktop ---------- */
@media (min-width: 900px) {
  .sidebar {
    display: flex; flex-direction: column; gap: 6px; width: 250px; flex-shrink: 0;
    background: var(--surface); border-right: 1px solid var(--line);
    padding: 28px 18px; position: sticky; top: 0; height: 100vh;
  }
  .sidebar .logo { padding: 0 12px 20px; font-size: 26px; }
  .side-nav a, .side-teachers a {
    height: 48px; padding: 0 14px; border-radius: 12px; color: var(--ink);
    display: flex; align-items: center; font-size: 15px; text-decoration: none; min-width: 44px;
  }
  .side-teachers a { padding-left: 32px; }
  .side-nav a.is-active { background: var(--sand); font-weight: 600; }
  .side-nav a:hover { background: var(--sand); }
  .side-teachers-label { margin: 24px 14px 8px; font-size: 13px; font-weight: 600; color: var(--ink-soft); }
  .side-request { margin: 16px 14px 0; padding: 10px 12px; border-radius: 12px; background: var(--sand); font-size: 13px; line-height: 1.6; color: #4B3F33; }
  .side-request a { font-weight: 600; word-break: break-all; }
  .side-foot { margin-top: auto; padding: 0 14px; font-size: 12px; line-height: 1.6; color: var(--ink-soft); }
  .mobile-logo { display: none; }
  main { padding: 16px 48px 40px; max-width: 1060px; }
  .home-hero { font-size: 32px; }
  .random-card { padding: 36px 40px; }
  .random-card h2 { font-size: 36px; }
  .dharma-wheel { display: block; }
  .bottom-nav { display: none; }
  .playerbar { left: 298px; right: 96px; max-width: 964px; bottom: 20px; }
  .series-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .series-card { min-height: 110px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}