/* Vietnam 2026 — single-page "Dark Luxury Travel" design (2026-08-21 brief).
   Design tokens exactly per Doron's spec (vietnam-2026-website-brief.md):
   deep blue-black bg, amber-gold accent, Heebo for Hebrew body/UI, Inter for
   numbers/secondary text. RTL is the ONLY direction — this page has no
   language toggle (see build_site.py / _v2_bilingual_multipage/ for the
   earlier bilingual multi-page version, kept as a fallback, not deleted). */

:root {
  --bg: #070B14;
  --card: #0F172A;
  --text: #F8FAFC;
  --text-soft: #94A3B8;
  --gold: #F59E0B;
  --gold-light: #FBBF24;
  --border: #1E293B;
  --radius: 18px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Heebo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.font-num { font-family: "Inter", "Heebo", sans-serif; font-variant-numeric: tabular-nums; }

/* ---- header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 20, 0.55);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.site-header.scrolled {
  background: rgba(7, 11, 20, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}
.brand-dot { width: 7px; height: 7px; border-radius: 999px; background: var(--gold); display: inline-block; }
.nav-link { color: var(--text-soft); transition: color .2s ease; }
.nav-link:hover { color: var(--gold-light); }

/* ---- hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center 40%;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(7,11,20,0.25) 0%, rgba(7,11,20,0.75) 60%, #070B14 100%);
}
.hero-title {
  font-weight: 800;
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #1a1204;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -8px rgba(245,158,11,.55); }
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,0.02);
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
}
.btn-ghost:hover { border-color: var(--gold); background: rgba(245,158,11,0.08); transform: translateY(-2px); }

/* ---- reveal-on-scroll ---- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---- cards ---- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover {
  transform: scale(1.03);
  box-shadow: 0 20px 40px -16px rgba(0,0,0,.55);
  border-color: rgba(245,158,11,0.35);
}
.section-title { font-weight: 700; }
.gold-rule {
  width: 56px; height: 3px; border-radius: 999px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
}

/* route timeline connector on wide screens */
.route-grid { position: relative; }

details.dest-more summary { cursor: pointer; list-style: none; }
details.dest-more summary::-webkit-details-marker { display: none; }
details.dest-more[open] summary .chev { transform: rotate(180deg); }
.chev { transition: transform .2s ease; }

/* gallery "coming soon" moments card */
.moments-card {
  border: 1px dashed var(--border);
  background: transparent;
}

/* focus states — visible on dark bg, meets contrast */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: var(--gold); color: #1a1204; }