/* travel.tkcheng.xyz — cream/borders theme
   Matches family palette of economist.tkcheng.xyz, house.tkcheng.xyz */

:root {
  --bg: #FAF7F2;
  --surface: #FFFFFF;
  --border: #E0D8CA;
  --border-strong: #C9BFA9;
  --ink: #2A2520;
  --ink-muted: #6B6359;
  --accent: #8B5A2B;       /* warm brown */
  --accent-soft: #F1E8D8;
  --danger: #B0413E;
  --warning: #B07D2E;
  --ok: #4A7A3A;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 1px 8px rgba(0,0,0,0.03);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Sticky header ───────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 247, 242, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  max-width: 920px; margin: 0 auto;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
}
.site-header__title {
  font-weight: 700; font-size: 0.95rem;
  margin-right: auto;
}
.site-header__nav { display: flex; gap: 8px; align-items: center; }
.site-header__btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.85rem; cursor: pointer;
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--ink);
}
.site-header__btn:hover { border-color: var(--border-strong); }
.site-header__badge {
  background: var(--accent); color: white;
  border-radius: 999px; padding: 0 6px; font-size: 0.7rem;
  margin-left: 4px;
}

/* ── Page container ──────────────────────────────────────────── */
.page { max-width: 920px; margin: 0 auto; padding: 24px 16px 80px; }

/* ── Index page: scenario tiles ──────────────────────────────── */
.group-block { margin-top: 28px; }
.group-block__heading {
  font-size: 0.85rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 10px;
}
.tile-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: block; color: inherit;
  transition: border-color .15s, transform .15s;
}
.tile:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  text-decoration: none;
}
.tile__title { font-weight: 600; font-size: 1rem; margin-bottom: 2px; }
.tile__title-zh { color: var(--ink-muted); font-size: 0.85rem; }
.tile__count {
  display: inline-block; margin-top: 8px;
  font-size: 0.75rem; color: var(--ink-muted);
}

/* ── Scenario page header ────────────────────────────────────── */
.scenario-header { margin-bottom: 18px; }
.scenario-header__title { font-size: 1.5rem; font-weight: 800; margin: 4px 0; }
.scenario-header__title-zh { color: var(--ink-muted); font-size: 1rem; margin-bottom: 4px; }
.scenario-header__tagline { color: var(--ink-muted); font-size: 0.9rem; }

/* ── Dialogue card ───────────────────────────────────────────── */
.dialogue {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 24px;
}
.dialogue__heading {
  font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 10px;
}
.dialogue__line { margin-bottom: 8px; }
.dialogue__line:last-child { margin-bottom: 0; }
.dialogue__speaker { font-weight: 600; margin-right: 6px; }
.dialogue__en { display: inline; }
.dialogue__zh {
  display: block; color: var(--ink-muted); font-size: 0.9rem;
  margin-top: 2px;
}
.dialogue__play {
  margin-top: 12px;
  border: 1px solid var(--border-strong); background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 6px 12px; cursor: pointer; font-size: 0.85rem;
}

/* ── Phrase cards ────────────────────────────────────────────── */
.phrases-heading {
  font-size: 0.85rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink-muted); margin: 24px 0 10px;
}
.phrase-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
  position: relative;
}
.phrase-card__top { display: flex; align-items: flex-start; gap: 8px; }
.phrase-card__en {
  flex: 1;
  font-size: 1.05rem; font-weight: 600;
}
.phrase-card__btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  cursor: pointer; font-size: 0.95rem;
  color: var(--ink-muted);
}
.phrase-card__btn:hover { border-color: var(--border-strong); }
.phrase-card__btn--fav-on { color: var(--accent); border-color: var(--accent); }
.phrase-card__zh { color: var(--ink-muted); font-size: 0.95rem; margin-top: 2px; }
.phrase-card__divider {
  border-top: 1px dashed var(--border);
  margin: 10px 0 8px;
}
.phrase-card__use { font-size: 0.85rem; color: var(--ink); }
.phrase-card__use::before { content: "💡 USE WHEN: "; font-weight: 600; }
.phrase-card__note { font-size: 0.82rem; margin-top: 4px; color: var(--ink-muted); }
.phrase-card__note--tip::before     { content: "⚠️ TIP: "; font-weight: 600; }
.phrase-card__note--alsoSay::before { content: "🔁 ALSO SAY: "; font-weight: 600; }
.phrase-card__note--avoid::before   { content: "🚫 AVOID: "; font-weight: 600; }

/* ── Bilingual toggle (CSS-only) ─────────────────────────────── */
body.lang-en-only .dialogue__zh,
body.lang-en-only .phrase-card__zh,
body.lang-en-only .scenario-header__title-zh,
body.lang-en-only .scenario-header__tagline,
body.lang-en-only .tile__title-zh { display: none; }

body.lang-zh-only .dialogue__en,
body.lang-zh-only .phrase-card__en,
body.lang-zh-only .scenario-header__title,
body.lang-zh-only .tile__title { display: none; }

body.lang-zh-only .dialogue__zh,
body.lang-zh-only .phrase-card__zh,
body.lang-zh-only .scenario-header__title-zh,
body.lang-zh-only .tile__title-zh { display: block; font-size: 1rem; color: var(--ink); }

/* ── Prev / Next nav ─────────────────────────────────────────── */
.scenario-nav {
  display: flex; justify-content: space-between;
  margin-top: 32px; padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .site-header__title { font-size: 0.85rem; }
  .site-header__btn { padding: 5px 8px; font-size: 0.8rem; }
  .page { padding: 16px 12px 100px; }
  .tile-grid { grid-template-columns: 1fr; }
  .scenario-header__title { font-size: 1.25rem; }
  .phrase-card__en { font-size: 1rem; }
  .scenario-nav {
    position: fixed; left: 0; right: 0; bottom: 0;
    background: var(--surface); border-top: 1px solid var(--border);
    margin: 0; padding: 10px 12px;
  }
}

/* ── Print (favorites page) ──────────────────────────────────── */
@media print {
  .site-header, .scenario-nav, .phrase-card__btn { display: none; }
  .phrase-card { border: 1px solid #999; page-break-inside: avoid; }
  body { background: white; color: black; font-size: 11pt; }
}