/* ========================================
   ธรรมบทอรรถกถา — Design System
   ใช้ร่วมกันระหว่าง index.html + dhammabada.html
   ======================================== */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Sarabun:ital,wght@0,300;0,400;0,600;0,700;1,400&family=Prompt:wght@400;500;600;700;800&display=swap');

/* ── Color Variables ── */
:root {
  /* Gold palette */
  --gold-50: #fdf8ef;
  --gold-100: #f5eed8;
  --gold-200: #e8ddc0;
  --gold-400: #c9a227;
  --gold-500: #a88420;
  --gold-600: #8a6d1b;
  --gold-700: #6b5518;
  --gold-800: #4a3a10;
  --gold-900: #2a1a08;
  --cream: #faf6ef;
  --rule: #d4b896;

  /* Light mode */
  --bg: var(--cream);
  --bg-card: #fff;
  --bg-card-hover: #fdf8ef;
  --text: var(--gold-900);
  --text-secondary: var(--gold-600);
  --text-muted: var(--gold-500);
  --text-faint: rgba(138,109,27,.7);
  --heading: var(--gold-800);
  --border: var(--gold-200);
  --border-hover: var(--gold-400);
  --shadow: 8px 12px 28px rgba(42,26,8,.1), 0 2px 8px rgba(42,26,8,.05);
  --shadow-hover: 8px 16px 36px rgba(42,26,8,.18), 0 4px 12px rgba(42,26,8,.08);

  /* Reader specific */
  --reader-bg: var(--cream);
  --reader-text: var(--gold-900);
  --reader-text-secondary: var(--gold-600);
  --reader-topbar-bg: rgba(250,246,239,.95);
  --reader-topbar-border: rgba(201,162,39,.2);
  --reader-topbar-title: var(--gold-800);
  --reader-navbar-bg: rgba(250,246,239,.97);
  --reader-navbar-border: rgba(201,162,39,.2);
  --reader-sec-title-color: var(--gold-700);
  --reader-sec-title-bg: rgba(201,162,39,.08);
  --reader-verse-bg: linear-gradient(135deg, var(--gold-100), var(--gold-200));
  --reader-verse-color: var(--gold-800);
  --reader-scrollbar: rgba(201,162,39,.3);
  --reader-img-cap: var(--gold-600);
  --reader-intro-h2: var(--gold-700);
  --reader-intro-h2-border: rgba(201,162,39,.3);
}

/* ── Dark Mode ── */
[data-theme="dark"] {
  --bg: #1a1008;
  --bg-card: #2a1a0a;
  --bg-card-hover: #3a2a1a;
  --text: #d4c8b8;
  --text-secondary: #a89880;
  --text-muted: #e8c96a;
  --text-faint: rgba(201,162,39,.7);
  --heading: #e8ddc0;
  --border: rgba(201,162,39,.25);
  --border-hover: var(--gold-400);
  --shadow: 8px 12px 28px rgba(0,0,0,.4), 0 2px 8px rgba(0,0,0,.2);
  --shadow-hover: 8px 16px 36px rgba(0,0,0,.5), 0 4px 12px rgba(0,0,0,.3);

  --reader-bg: #1e1008;
  --reader-text: #d4c8b8;
  --reader-text-secondary: #a89880;
  --reader-topbar-bg: rgba(26,8,6,.9);
  --reader-topbar-border: rgba(201,162,39,.15);
  --reader-topbar-title: rgba(255,255,255,.7);
  --reader-navbar-bg: rgba(26,8,6,.95);
  --reader-navbar-border: rgba(201,162,39,.15);
  --reader-sec-title-color: #e8c96a;
  --reader-sec-title-bg: rgba(201,162,39,.1);
  --reader-verse-bg: linear-gradient(135deg, #2a2010, #1e1808);
  --reader-verse-color: #e8d8c0;
  --reader-scrollbar: rgba(201,162,39,.3);
  --reader-img-cap: #a89880;
  --reader-intro-h2: #e8c96a;
  --reader-intro-h2-border: rgba(201,162,39,.25);
}

/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Sarabun', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
h1, h2, h3, .font-headline,
.sec-title, .cover-title, .ch-num, .ch-sub,
.home-title, .card-title, .vol-title {
  font-family: 'Prompt', sans-serif;
}

/* ── Theme Toggle Button ── */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 10px;
  transition: all .2s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}