:root {
  --bg: #e6f4f1;
  --card: rgba(255, 255, 255, 0.82);
  --text: #102a2e;
  --muted: #5e7478;
  --border: rgba(13, 148, 136, 0.28);
  --accent: #0f766e;
  --accent-2: #2563eb;
  --accent-soft: #ccfbf1;
  --thai: #be123c;
  --read: #64748b;
  --active-bg: #fef08a;
  --active-text: #713f12;
  --shadow: 0 16px 42px rgba(15, 118, 110, 0.14);
  --font-display: 'Outfit', 'Segoe UI', sans-serif;
  --font-thai: 'Sarabun', 'Tahoma', sans-serif;
}

html.dark body,
body.dark {
  --bg: #071819;
  --card: rgba(15, 35, 38, 0.88);
  --text: #e5f7f5;
  --muted: #91aaa9;
  --border: rgba(94, 234, 212, 0.25);
  --accent: #2dd4bf;
  --accent-2: #60a5fa;
  --accent-soft: #134e4a;
  --thai: #fda4af;
  --read: #78918f;
  --active-bg: #fde047;
  --active-text: #422006;
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.34);
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 16px;
  padding-bottom: calc(26px + env(safe-area-inset-bottom, 0px));
  color: var(--text);
  font-family: var(--font-display);
  background:
    radial-gradient(820px 460px at 8% -8%, rgba(45, 212, 191, 0.24), transparent 60%),
    radial-gradient(720px 420px at 100% 0%, rgba(96, 165, 250, 0.18), transparent 55%),
    var(--bg);
}

.wrap { max-width: 940px; margin: 0 auto; }

.tm-hero-read-along {
  background:
    radial-gradient(700px 300px at 12% 0%, rgba(94, 234, 212, 0.26), transparent 62%),
    linear-gradient(145deg, #083344, #0f766e 52%, #1d4ed8) !important;
}

.tm-hero h1 .th,
.tm-lead .th {
  display: block;
  margin-top: 4px;
  font-family: var(--font-thai);
}

.tm-hero h1 .th { font-size: 0.72em; }
.tm-lead .th { opacity: 0.9; }

.ra-panel {
  margin-top: 14px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.ra-panel h2,
.ra-panel h3 { margin: 0; }

.ra-direction-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-left: 5px solid var(--accent-2);
}
.ra-direction {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  min-width: min(100%, 360px);
}
.ra-direction button {
  display: grid;
  gap: 2px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 13px;
  color: var(--text);
  background: var(--card);
  font: inherit;
  cursor: pointer;
}
.ra-direction button strong { font-size: .9rem; }
.ra-direction button span { color: var(--muted); font-size: .68rem; }
.ra-direction button.active {
  border-color: var(--accent-2);
  color: #fff;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-2) 24%, transparent);
}
.ra-direction button.active span { color: rgba(255,255,255,.82); }

.ra-sub {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.ra-passage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 9px;
  margin-top: 13px;
}

.ra-passage-card {
  display: flex;
  gap: 10px;
  min-height: 94px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.ra-passage-card:hover,
.ra-passage-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.ra-passage-icon { font-size: 1.5rem; line-height: 1.2; }
.ra-passage-card span:last-child { display: flex; flex-direction: column; gap: 2px; }
.ra-passage-card strong { font-size: 0.9rem; }
.ra-passage-card em {
  color: var(--muted);
  font-size: 0.86rem;
  font-style: normal;
  font-weight: 700;
}
.ra-passage-card strong.th-primary {
  color: var(--text);
  font-family: var(--font-thai);
  font-size: 1rem;
}
.ra-passage-card em.th-secondary {
  color: var(--thai);
  font-family: var(--font-thai);
}
.ra-passage-card small { color: var(--muted); font-size: 0.7rem; font-weight: 700; }

.ra-reader-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.ra-title-th {
  margin: 3px 0 0;
  color: var(--thai);
  font-family: var(--font-thai);
  font-size: 1.05rem;
  font-weight: 700;
}
.ra-reader-head h2.th-primary { font-family: var(--font-thai); font-size: 1.35rem; }
.ra-title-th.en-secondary {
  color: var(--muted);
  font-family: var(--font-display);
  font-size: .95rem;
}

.ra-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.ra-options label { display: inline-flex; align-items: center; gap: 5px; }
.ra-options select {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--card);
  color: var(--text);
  font: inherit;
}

.ra-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.ra-control {
  min-height: 43px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.ra-control.primary {
  min-width: 220px;
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.ra-progress {
  height: 7px;
  margin-top: 13px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, var(--border) 58%, transparent);
}

.ra-progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--accent-2);
  transition: width 0.18s linear;
}

.ra-progress-label {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.ra-status {
  min-height: 1.4em;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}
.ra-status.ok { color: var(--accent); }
.ra-status.bad { color: #dc2626; }

.ra-text {
  margin-top: 15px;
  padding: clamp(14px, 3vw, 24px);
  border: 1px solid var(--border);
  border-radius: 18px;
  background: color-mix(in srgb, var(--card) 88%, transparent);
}

.ra-sentence {
  margin: 0;
  padding: 12px 10px;
  border-left: 3px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.ra-sentence + .ra-sentence { margin-top: 8px; }
.ra-sentence:hover { background: color-mix(in srgb, var(--accent-soft) 45%, transparent); }
.ra-sentence.speaking {
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft) 52%, transparent);
}
.ra-secondary {
  margin-top: 4px;
  padding-top: 5px;
  border-top: 1px dashed color-mix(in srgb, var(--border) 70%, transparent);
}

.ra-th {
  margin: 0;
  font-family: var(--font-thai);
  font-size: clamp(1.42rem, 4vw, 2rem);
  font-weight: 600;
  line-height: 1.9;
}
.ra-line.active-line { color: var(--text); }
.ra-line.active-line::before {
  content: "▶";
  margin-right: 6px;
  color: var(--accent);
  font: 700 .65em var(--font-display);
}

.ra-token {
  display: inline;
  padding: 2px 3px;
  border-radius: 6px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition: color 0.12s, background 0.12s, transform 0.12s;
}

.ra-token.read { color: var(--read); }
.ra-token.active {
  color: var(--active-text);
  background: var(--active-bg);
  outline: 2px solid color-mix(in srgb, var(--active-bg) 70%, var(--accent));
  font-weight: 800;
}

.ra-roman,
.ra-en { margin: 4px 3px 0; line-height: 1.45; }
.ra-roman { color: var(--accent-2); font-size: 0.82rem; font-style: italic; }
.ra-en { color: var(--muted); font-size: 0.9rem; font-weight: 600; }
.ra-en-first .ra-sentence > .ra-en {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.16rem, 3vw, 1.55rem);
  line-height: 1.75;
  font-weight: 700;
}
.ra-en-first .ra-secondary .ra-th {
  color: var(--muted);
  font-size: clamp(1rem, 3vw, 1.28rem);
  line-height: 1.65;
}

.ra-tip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.ra-tip div {
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 12px;
}
.ra-tip strong { display: block; color: var(--accent); font-size: 0.78rem; }
.ra-tip span { display: block; margin-top: 3px; color: var(--muted); font-size: 0.76rem; }

.ra-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 15px;
  margin-top: 18px;
  padding: 12px 4px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
}
.ra-footer a { color: var(--accent); font-weight: 700; text-decoration: none; }

.mobile-dock { display: none; }

.sc-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  align-items: flex-end;
  justify-content: center;
  padding: 12px;
  background: rgba(15, 23, 42, 0.6);
}
.sc-menu-overlay.open { display: flex; }
.sc-menu-sheet {
  width: min(480px, 100%);
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  backdrop-filter: blur(18px);
}
.sc-menu-sheet h3 { margin: 0 0 12px; }
.sc-menu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sc-menu-grid a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}
.sc-menu-grid .th { color: var(--thai); font-family: var(--font-thai); }
.sc-menu-grid .en { color: var(--muted); font-size: 0.72rem; }
.sc-menu-close {
  width: 100%;
  margin-top: 11px;
  padding: 9px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--text);
  font: inherit;
  font-weight: 800;
}

@media (max-width: 900px) {
  body { padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  .mobile-dock {
    display: grid;
    position: fixed;
    z-index: 9998;
    right: 0;
    bottom: 0;
    left: 0;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 4px;
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--border);
    background: color-mix(in srgb, #071819 92%, transparent);
    backdrop-filter: blur(14px);
  }
  .mobile-dock a,
  .mobile-dock button {
    display: flex;
    min-height: 55px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    padding: 4px 2px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 13px;
    background: rgba(255, 255, 255, 0.07);
    color: #e2e8f0;
    font: inherit;
    font-size: 0.62rem;
    font-weight: 700;
    line-height: 1.1;
    text-decoration: none;
  }
  .mobile-dock .primary { border-color: #2dd4bf; background: rgba(15, 118, 110, 0.68); }
  .dock-ico { font-size: 1.08rem; }
  .dock-th { font-family: var(--font-thai); font-size: 0.67rem; }
}

@media (max-width: 640px) {
  body { padding: 9px; padding-bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  .ra-panel { padding: 12px; border-radius: 16px; }
  .ra-passage-grid { grid-template-columns: 1fr 1fr; }
  .ra-passage-card { min-height: 88px; padding: 9px; }
  .ra-options { margin-top: 4px; }
  .ra-control.primary { width: 100%; }
  .ra-text { padding: 8px; }
  .ra-sentence { padding: 10px 6px; }
  .ra-tip { grid-template-columns: 1fr; }
  .ra-direction-panel { align-items: stretch; flex-direction: column; }
  .ra-direction { width: 100%; min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}