/* Dunes Unawatuna Hotel — layout and components.
   Mobile-first. Identity: dark garden shade, lantern gold, square laterite edges.
   Authored values from docs/03-design-spec.md and ../../docs/BUILD-DECISIONS.md. */

/* ---------- utilities ---------- */
*, *::before, *::after { box-sizing: border-box; }
.wrap { inline-size: 100%; max-inline-size: var(--max-w); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only { position: absolute; inline-size: 1px; block-size: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-block-size: 48px; padding: 0 var(--s-6);
  font: inherit; font-weight: 600; line-height: 1.2; text-align: center; text-decoration: none;
  border: 0; border-radius: var(--r-sm); cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.btn--primary { background: var(--c-accent); color: var(--c-accent-ink); }
.btn--primary:hover { background: #C49A3F; }
.btn--ghost { background: transparent; color: var(--c-ink); box-shadow: inset 0 0 0 1.5px var(--c-accent); }
.btn--ghost:hover { background: var(--c-tint); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  inline-size: 44px; block-size: 44px; padding: 0;
  background: transparent; color: var(--c-ink); border: 0; border-radius: var(--r-sm); cursor: pointer;
}
.icon-btn:hover { background: var(--c-tint); color: var(--c-accent); }

/* ---------- header ---------- */
.site-header {
  position: sticky; inset-block-start: 0; z-index: 20;
  background: var(--c-bg);
  min-block-size: var(--header-min);
  display: flex; align-items: center;
  border-block-end: 1px solid var(--c-line);
}
.header-inner { display: flex; align-items: center; gap: var(--s-3); }
.wordmark { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-2); color: var(--c-ink); text-decoration: none; margin-inline-end: auto; white-space: nowrap; }
.wordmark:hover { color: var(--c-accent); }

.primary-nav, .header-cta { display: none; }
/* The native switcher labels do not fit beside the wordmark below 768px;
   the drawer carries the same switcher there. */
.site-header .lang-switch { display: none; }
.primary-nav ul, .lang-switch ul, .drawer-nav ul { display: flex; align-items: center; gap: var(--s-3); margin: 0; padding: 0; list-style: none; }
.primary-nav a { display: inline-flex; align-items: center; min-block-size: 44px; color: var(--c-ink); text-decoration: none; font-weight: 500; white-space: nowrap; }
.primary-nav a:hover { color: var(--c-accent); }

/* Language switcher — active state echoes the catalogue gold bar (spec §5). */
.lang-switch a {
  display: inline-flex; align-items: center; min-block-size: 44px;
  padding-inline: var(--s-2); color: var(--c-muted); text-decoration: none;
  border-inline-start: 3px solid transparent; white-space: nowrap;
}
.lang-switch a:hover { color: var(--c-ink); }
.lang-switch a[aria-current="true"] { color: var(--c-ink); border-inline-start-color: var(--c-accent); font-weight: 600; }

.menu-toggle { display: inline-flex; align-items: center; justify-content: center; inline-size: 44px; block-size: 44px; background: transparent; color: var(--c-ink); border: 1px solid var(--c-line); cursor: pointer; }
.menu-toggle:hover { color: var(--c-accent); border-color: var(--c-accent); }

/* ---------- drawer ---------- */
.drawer {
  position: fixed; inset: 0 0 0 auto; margin: 0; padding: var(--s-4) var(--s-4) calc(var(--s-6) + env(safe-area-inset-bottom));
  inline-size: min(22rem, 88vw); max-inline-size: none; max-block-size: none; block-size: 100%;
  background: var(--c-surface); color: var(--c-ink); border: 0; border-inline-start: 1px solid var(--c-line);
  flex-direction: column; gap: var(--s-6); overscroll-behavior: contain;
}
.drawer[open] { display: flex; }
.drawer::backdrop { background: rgb(0 0 0 / .65); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }
.drawer-title { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: var(--fs-2); }
.drawer-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
.drawer-nav a { display: flex; align-items: center; min-block-size: 48px; color: var(--c-ink); text-decoration: none; font-weight: 500; border-block-end: 1px solid var(--c-line); }
.drawer-nav a:hover { color: var(--c-accent); }
.drawer .lang-switch { margin-block-start: auto; }
.drawer-cta { inline-size: 100%; }

/* ---------- sections ---------- */
.section { padding-block: var(--s-12); }
.section h2 { font-size: calc(var(--fs-3) * var(--scale-heading)); color: var(--c-ink); }
.lead { color: var(--c-muted); max-inline-size: 46rem; margin-block: var(--s-4) 0; }
.note { color: var(--c-muted); font-size: var(--fs-0); margin-block-start: var(--s-4); }

/* ---------- hero: catalogue-grid ---------- */
.hero { padding-block: var(--s-8) var(--s-12); }
.hero-type { max-inline-size: 34rem; }
.kicker { margin: 0 0 var(--s-2); font-family: var(--font-display); font-style: italic; font-weight: 500; font-size: var(--fs-2); color: var(--c-accent); }
.hero h1 { font-weight: 600; }
/* Reserve the measured native/fallback line counts on narrow screens. Text
   remains visible while fonts load; min sizes still grow for larger text. */
@media (max-width: 479px) {
  html[data-lang="si"] .hero h1,
  html[data-lang="ta"] .hero h1 { min-block-size: 3lh; }
  html[data-lang="ta"] .hero .kicker { min-block-size: 2lh; }
  html[data-lang="si"] .hero .subline,
  html[data-lang="ta"] .hero .subline { min-block-size: 4lh; }
}
.subline { color: var(--c-muted); margin-block: var(--s-4) 0; }
.actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-block-start: var(--s-6); }
.chips { display: flex; flex-wrap: wrap; gap: var(--s-2); margin: var(--s-6) 0 0; padding: 0; list-style: none; }
.chips li { background: var(--c-tint); border: 1px solid var(--c-line); color: var(--c-ink); font-size: var(--fs-0); font-weight: 500; padding: var(--s-2) var(--s-3); }

.cat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-3); margin: var(--s-8) 0 0; padding: 0; list-style: none; }
.cat-tile { border-inline-start: 3px solid var(--c-accent); padding-inline-start: var(--s-3); animation: hero-enter var(--hero-enter) var(--ease) both; animation-delay: calc(var(--i, 0) * var(--hero-stagger)); }
.cat-tile figure { margin: 0; }
.cat-tile__frame { position: relative; aspect-ratio: 16 / 9; background: var(--c-tint); overflow: hidden; }
.cat-tile__frame img { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; object-fit: cover; }
.cat-tile--contain .cat-tile__frame img { object-fit: contain; }
.cat-label { display: block; margin-block-start: var(--s-2); font-size: var(--fs-0); font-weight: 500; color: var(--c-ink); }
.image-note { display: block; color: var(--c-muted); font: 400 11px/1.6 var(--font-body); margin-block-start: 4px; }

@keyframes hero-enter { from { opacity: 0; } to { opacity: 1; } }

/* ---------- about ---------- */
.about-grid { display: grid; gap: var(--s-8); }
.about-copy p { margin-block: var(--s-4) 0; color: var(--c-ink); }
.highlights { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-4); margin: var(--s-8) 0 0; }
.highlights > div { border-block-start: 1px solid var(--c-line); padding-block-start: var(--s-3); }
.highlights dt { color: var(--c-muted); font-size: var(--fs-0); }
.highlights dd { margin: 0; font-weight: 500; }
.about-media { margin: 0; }
.about-media img { inline-size: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--c-tint); outline: 3px solid var(--c-accent); outline-offset: -3px; }

/* ---------- services (icons, 3x2) ---------- */
.svc-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1px; margin: var(--s-6) 0 0; padding: 1px; background: var(--c-line); list-style: none; }
.svc { background: var(--c-surface); padding: var(--s-6); }
.svc__icon { display: block; color: var(--c-accent); margin-block-end: var(--s-4); }
.svc h3 { font-size: calc(var(--fs-2) * var(--scale-heading)); }
.svc p { margin: var(--s-2) 0 0; color: var(--c-muted); }

/* ---------- gallery (masonry-3) ---------- */
.masonry { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-3); align-items: start; margin: var(--s-6) 0 0; padding: 0; list-style: none; }
.masonry.is-masonry { grid-auto-rows: 8px; row-gap: var(--s-2); }
.masonry.is-masonry .tile-item { grid-row-end: span var(--span, 1); }
.tile-item { min-inline-size: 0; }
.tile { position: relative; display: block; inline-size: 100%; padding: 0; border: 0; background: var(--c-tint); aspect-ratio: 4 / 3; cursor: zoom-in; }
.tile-item:nth-child(1) .tile, .tile-item:nth-child(4) .tile { aspect-ratio: 3 / 4; }
.tile-item:nth-child(3) .tile, .tile-item:nth-child(6) .tile { aspect-ratio: 1 / 1; }
.tile img { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; object-fit: cover; }
.tile:hover img { opacity: .92; }
.badge {
  position: absolute; inset-block-end: 0; inset-inline-start: 0; z-index: 1;
  font-size: 11px; font-weight: 500; line-height: 1;
  padding: var(--s-2) var(--s-2);
  color: var(--c-bg); background: rgb(212 168 75 / .85);
}
.tile:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }

/* ---------- trust ---------- */
.trust-item { margin-block-start: var(--s-6); }
.trust-score { margin: 0; font-family: var(--font-display); font-weight: 700; font-size: calc(var(--fs-4) * var(--scale-heading)); line-height: var(--lh-heading); color: var(--c-accent); }
.trust-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--s-2); margin: var(--s-2) 0 0; color: var(--c-muted); }
.trust-source { font-weight: 600; }
.disclaimer { margin-block-start: var(--s-4); color: var(--c-muted); font-size: var(--fs-0); max-inline-size: 46rem; }

/* ---------- contact ---------- */
.contact-grid { display: grid; gap: var(--s-8); }
.contact-rows { display: grid; gap: var(--s-4); margin: var(--s-6) 0 0; }
.contact-rows > div { display: grid; grid-template-columns: 8rem minmax(0, 1fr); gap: var(--s-3); border-block-start: 1px solid var(--c-line); padding-block-start: var(--s-3); }
.contact-rows dt { color: var(--c-muted); font-size: var(--fs-0); }
.contact-rows dd { margin: 0; font-weight: 500; }
.hours-note { margin-block-start: var(--s-6); color: var(--c-muted); }
.map-title { font-size: calc(var(--fs-2) * var(--scale-heading)); }
.map-card { position: relative; aspect-ratio: 4 / 3; margin-block-start: var(--s-4); background: var(--c-tint); border: 1px solid var(--c-line); display: grid; place-items: center; place-content: center; gap: var(--s-4); padding: var(--s-6); }
.map-static { color: var(--c-accent); }
.map-card iframe { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; border: 0; }
.map-link-row { margin-block-start: var(--s-3); }

/* ---------- footer + plinth ---------- */
.site-footer { position: relative; margin-block-start: var(--s-16); padding-block: calc(12px + var(--s-8)) calc(var(--s-8) + var(--sticky-cta-h)); background: var(--c-bg); }
.site-footer::before { content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; block-size: 12px; background: var(--c-accent); }
.footer-inner { display: grid; gap: var(--s-3); }
.footer-tagline { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: var(--fs-2); }
.footer-socials { display: flex; gap: var(--s-4); margin: 0; padding: 0; list-style: none; }
.footer-links, .footer-rights, .footer-built { margin: 0; color: var(--c-muted); font-size: var(--fs-0); }
.preview-notice { margin-block-start: var(--s-6); padding-block-start: var(--s-4); border-block-start: 1px solid var(--c-line); display: grid; gap: var(--s-2); }
.preview-notice p { margin: 0; color: var(--c-muted); font-size: var(--fs-0); max-inline-size: 52rem; }
.offer-line a { font-weight: 600; }

/* ---------- sticky CTA ---------- */
.sticky-cta {
  position: fixed; inset-inline: 0; inset-block-end: 0; z-index: 30;
  display: flex; justify-content: center;
  padding: var(--s-3) var(--gutter) calc(var(--s-3) + env(safe-area-inset-bottom));
  background: var(--c-surface); border-block-start: 1px solid var(--c-line);
}
.sticky-cta .btn { inline-size: 100%; max-inline-size: 28rem; }
body:has(dialog[open]) { overflow: hidden; }
body:has(dialog[open]) .sticky-cta { visibility: hidden; }

/* ---------- gallery viewer ---------- */
.lightbox {
  inline-size: min(64rem, 94vw); max-inline-size: none; max-block-size: 92vh; margin: auto; padding: 0;
  background: var(--c-surface); color: var(--c-ink); border: 1px solid var(--c-line);
  flex-direction: column; gap: var(--s-3); overscroll-behavior: contain;
}
.lightbox[open] { display: flex; }
.lightbox::backdrop { background: rgb(0 0 0 / .8); }
.viewer-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); padding: var(--s-3); border-block-end: 1px solid var(--c-line); }
.badge--viewer { position: static; }
.viewer-image { position: relative; display: grid; place-items: center; background: var(--c-tint); min-block-size: 12rem; }
.viewer-image img { inline-size: 100%; block-size: auto; max-block-size: 62vh; object-fit: contain; margin-inline: auto; }
.viewer-caption { margin: 0; padding-inline: var(--s-4); color: var(--c-muted); font-size: var(--fs-0); }
.viewer-controls { display: flex; align-items: center; justify-content: center; gap: var(--s-6); padding: var(--s-3) var(--s-3) var(--s-4); }
.viewer-count { color: var(--c-muted); font-variant-numeric: tabular-nums; }

/* ---------- image failure state ---------- */
.image-unavailable { position: relative; background: var(--c-tint); }
.image-unavailable img { visibility: hidden; }
.image-unavailable::after {
  content: attr(data-fallback-label);
  position: absolute; inset-inline: var(--s-3); inset-block-end: var(--s-3);
  color: var(--c-muted); font-size: var(--fs-0);
}

/* ---------- 480px ---------- */
@media (min-width: 480px) {
  .svc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- mobile lead catalogue tile: portrait art direction ---------- */
@media (max-width: 768px) {
  .cat-tile--lead .cat-tile__frame { aspect-ratio: 4 / 5; }
}

/* ---------- 768px ---------- */
@media (min-width: 768px) {
  .site-header .lang-switch { display: block; }
  .section { padding-block: var(--s-16); }
  .svc-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .masonry { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .highlights { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cat-tile { padding-inline-start: var(--s-4); }
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .preview-notice { grid-column: 1 / -1; }
}

/* ---------- 1024px ---------- */
@media (min-width: 1024px) {
  .header-cta { display: inline-flex; }
  .sticky-cta { display: none; }
  .site-footer { padding-block-end: var(--s-12); }
  .about-grid { grid-template-columns: 7fr 5fr; align-items: start; gap: var(--s-12); }
  .contact-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  .hero { padding-block: var(--s-12) var(--s-16); }
  .cat-grid { margin-block-start: var(--s-12); }
}

/* ---------- 1280px: the authored desktop header row ---------- */
@media (min-width: 1280px) {
  .primary-nav { display: block; }
  .menu-toggle { display: none; }
  /* Tamil navigation and native switcher labels run long; the row stays on one
     64px line with a tight gap and a smaller switcher until there is more room. */
  .header-inner { gap: var(--s-2); }
  .site-header .lang-switch a { font-size: var(--fs-0); }
  .header-cta { padding-inline: var(--s-4); }
}

/* ---------- 1440px: full-size header type ---------- */
@media (min-width: 1440px) {
  .header-inner { gap: var(--s-4); }
  .site-header .lang-switch a { font-size: var(--fs-1); }
  .header-cta { padding-inline: var(--s-6); }
}