/* =========================================================
   Bangkok Recommendations / Conference Website
   Shared stylesheet
   ========================================================= */

:root {
  /* Colour palette — calm, institutional, policy-oriented */
  --color-navy-deep: #0f2438;
  --color-navy: #173b5c;
  --color-navy-light: #2c5a82;
  --color-teal: #0f6e66;
  --color-teal-light: #e3f1ee;
  --color-gold: #b1822f;
  --color-gold-light: #f6ecd9;

  --color-bg: #f7f8f7;
  --color-bg-alt: #eef2f3;
  --color-surface: #ffffff;
  --color-border: #d9e1e3;

  --color-text: #1f2933;
  --color-text-muted: #51606b;
  --color-text-on-dark: #f3f6f7;
  --color-text-on-dark-muted: #c4d3da;

  --status-not-started: #707b85;
  --status-in-progress: #1f6fb2;
  --status-completed: #1f8a4c;
  --status-delayed: #b3413b;

  --max-width: 1140px;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(15, 36, 56, 0.08);
  --shadow-md: 0 4px 16px rgba(15, 36, 56, 0.12);

  --font-base: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Reset & base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: var(--color-teal); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy-deep);
  line-height: 1.25;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(1.9rem, 3vw, 2.6rem); }
h2 { font-size: clamp(1.5rem, 2.4vw, 2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--color-navy-deep);
  color: #fff; padding: 0.6em 1em; z-index: 1000;
}
.skip-link:focus { left: 0; }

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 56px 0; }
.section--alt { background: var(--color-bg-alt); }
.section--navy { background: var(--color-navy-deep); color: var(--color-text-on-dark); }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy p, .section--navy li { color: var(--color-text-on-dark-muted); }
.section-head { margin-bottom: 2rem; max-width: 760px; }
.section-head .eyebrow { display: block; }
.grid {
  display: grid;
  gap: 24px;
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* ---------- Eyebrow / labels ---------- */
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-teal);
}
.section--navy .eyebrow { color: var(--color-gold-light); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.4em;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--color-teal); color: #fff; }
.btn-primary:hover { background: #0b554f; }
.btn-secondary { background: transparent; border-color: rgba(255,255,255,0.6); color: #fff; }
.btn-secondary:hover { background: rgba(255,255,255,0.12); }
.btn-outline { background: transparent; border-color: var(--color-navy); color: var(--color-navy); }
.btn-outline:hover { background: var(--color-navy); color: #fff; }
.btn-sm { padding: 0.4em 0.9em; font-size: 0.85rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-navy-deep);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
}
.brand small {
  display: block;
  font-weight: 500;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 10px;
  cursor: pointer;
}
.main-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
  flex-wrap: wrap;
}
.main-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--color-navy);
  font-weight: 600;
  font-size: 0.92rem;
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  background: var(--color-teal-light);
  color: var(--color-teal);
  text-decoration: none;
}
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; align-items: center; gap: 6px; }
  .main-nav {
    display: none;
    width: 100%;
    border-top: 1px solid var(--color-border);
  }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; padding: 10px 0; }
  .site-header__bar { flex-wrap: wrap; }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--color-navy-deep) 0%, var(--color-navy) 60%, var(--color-teal) 130%);
  color: #fff;
  padding: 64px 0 56px;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
}
.hero h1 { color: #fff; margin-bottom: 0.5em; }
.hero p.lead { font-size: 1.1rem; color: var(--color-text-on-dark-muted); max-width: 560px; }
.hero .meta-row {
  display: flex; flex-wrap: wrap; gap: 18px; margin: 1.4em 0;
  font-size: 0.92rem; color: var(--color-text-on-dark-muted);
}
.hero .meta-row strong { color: #fff; display: block; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }
.hero .cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5em; }
.hero-figure img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  background: #fff;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: 0.4em; }
.card .muted { color: var(--color-text-muted); font-size: 0.92rem; }
.card-list { display: grid; gap: 18px; }

/* ---------- Stat strip ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
@media (max-width: 700px) { .stat-strip { grid-template-columns: repeat(2, 1fr); } }
.stat { padding: 10px; }
.stat .num { font-size: 2.1rem; font-weight: 800; color: var(--color-teal); display: block; }
.section--navy .stat .num { color: var(--color-gold-light); }
.stat .label { font-size: 0.85rem; color: var(--color-text-muted); }
.section--navy .stat .label { color: var(--color-text-on-dark-muted); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
th { background: var(--color-bg-alt); color: var(--color-navy-deep); font-weight: 700; }
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius); }
.table-wrap table { border: none; }
.table-wrap th:first-child, .table-wrap td:first-child { padding-left: 16px; }

/* ---------- Badges / status pills ---------- */
.badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 3px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge--final { background: var(--color-teal-light); color: var(--color-teal); }
.badge--draft { background: var(--color-gold-light); color: var(--color-gold); }
.badge--reviewed { background: #e4ecf6; color: var(--color-navy); }
.badge--pending { background: #eee; color: #666; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; font-weight: 700; }
.status-pill::before { content: ""; width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.status-not-started::before { background: var(--status-not-started); }
.status-in-progress::before { background: var(--status-in-progress); }
.status-completed::before { background: var(--status-completed); }
.status-delayed::before { background: var(--status-delayed); }
.status-not-started { color: var(--status-not-started); }
.status-in-progress { color: var(--status-in-progress); }
.status-completed { color: var(--status-completed); }
.status-delayed { color: var(--status-delayed); }

/* ---------- Placeholder / coming soon blocks ---------- */
.placeholder {
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  text-align: center;
}
.placeholder strong { color: var(--color-navy); display: block; margin-bottom: 4px; }

/* ---------- Timeline (programme / process) ---------- */
.timeline { border-left: 3px solid var(--color-teal-light); margin-left: 6px; padding-left: 24px; }
.timeline-item { position: relative; padding-bottom: 28px; }
.timeline-item::before {
  content: ""; position: absolute; left: -32px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-teal); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--color-teal-light);
}
.timeline-item .time { font-weight: 700; color: var(--color-navy); font-size: 0.85rem; }

/* ---------- Agenda / day tabs ---------- */
.day-tabs { display: flex; gap: 8px; margin-bottom: 1.5rem; flex-wrap: wrap; }
.day-tab {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-weight: 700;
  cursor: pointer;
  color: var(--color-navy);
}
.day-tab[aria-selected="true"] { background: var(--color-navy-deep); color: #fff; border-color: var(--color-navy-deep); }
.day-panel { display: none; }
.day-panel.is-active { display: block; }
.session-row { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--color-border); }
.session-row:last-child { border-bottom: none; }
.session-row .time { font-weight: 700; color: var(--color-navy); font-size: 0.88rem; }
.session-row h4 { margin: 0 0 4px; font-size: 1.02rem; }
.session-row .details { color: var(--color-text-muted); font-size: 0.92rem; }
@media (max-width: 640px) {
  .session-row { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Filters (documents / gallery) ---------- */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 14px; margin-bottom: 1.6rem;
}
.filter-bar input[type="search"], .filter-bar select {
  padding: 8px 10px; border: 1px solid var(--color-border); border-radius: var(--radius);
  font-family: var(--font-base); font-size: 0.92rem;
}
.filter-bar label { font-size: 0.85rem; color: var(--color-text-muted); display: flex; flex-direction: column; gap: 4px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-deep);
  color: var(--color-text-on-dark-muted);
  padding: 48px 0 28px;
  margin-top: 64px;
  font-size: 0.92rem;
}
.site-footer h4 { color: #fff; font-size: 0.95rem; margin-bottom: 0.8em; }
.site-footer a { color: var(--color-text-on-dark-muted); }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  margin-top: 32px; padding-top: 18px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 0.82rem;
}

/* ---------- Misc ---------- */
.logo-strip-img { border-radius: var(--radius); border: 1px solid var(--color-border); background: #fff; padding: 10px; }
.breadcrumb { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1rem; }
.breadcrumb a { color: var(--color-text-muted); }
.two-col { display: grid; grid-template-columns: 2fr 1fr; gap: 36px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.callout {
  border-left: 4px solid var(--color-teal);
  background: var(--color-teal-light);
  padding: 16px 20px;
  border-radius: var(--radius);
}
.callout--gold { border-left-color: var(--color-gold); background: var(--color-gold-light); }
.empty-state { text-align: center; padding: 40px 20px; color: var(--color-text-muted); }