:root {
  --primary: #C8102E;
  --primary-dark: #9E0C24;
  --primary-soft: #FDF1F3;
  --accent: #D4AF37;
  --bg: #F6F7F9;
  --surface: #FFFFFF;
  --border: #E5E7EB;
  --border-strong: #D1D5DB;
  --text: #1F2937;
  --muted: #6B7280;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, .05);
  --shadow-md: 0 10px 25px -5px rgba(17, 24, 39, .08), 0 8px 10px -6px rgba(17, 24, 39, .04);
  --font-head: "Bai Jamjuree", "Sarabun", "Noto Sans Thai", sans-serif;
  --font-body: "Sarabun", "Noto Sans Thai", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.3; margin: 0; }
a { color: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
dl, dd { margin: 0; }
svg { flex-shrink: 0; }
::selection { background: var(--primary); color: #fff; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--primary); color: #fff; padding: .75rem 1rem; text-decoration: none;
}
.skip-link:focus { left: 0; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: var(--surface);
  border-top: 3px solid var(--primary);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; min-width: 0; }
.brand img { height: 44px; width: auto; display: block; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border: 1px solid var(--border-strong); border-radius: 999px;
  font-size: .9rem; font-weight: 500; text-decoration: none; color: var(--text);
  transition: border-color .2s, color .2s, background-color .2s;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

/* ---------- Hero ---------- */
.hero { background: var(--surface); border-bottom: 1px solid var(--border); padding: 36px 0 28px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: .85rem; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--primary); text-decoration: underline; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--border-strong); }
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.eyebrow {
  display: inline-block; font-family: var(--font-head); font-size: .8rem; font-weight: 600;
  letter-spacing: .04em; color: var(--primary); margin-bottom: 8px;
}
.hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
.hero-lead { color: var(--muted); margin: 10px 0 0; max-width: 65ch; }
.stats { display: flex; gap: 28px; }
.stat { display: flex; flex-direction: column; }
.stat-value { font-family: var(--font-head); font-size: 1.75rem; font-weight: 700; line-height: 1; color: var(--text); font-variant-numeric: tabular-nums; }
.stat-label { font-size: .8rem; color: var(--muted); margin-top: 6px; }

.toolbar { display: flex; gap: 12px; margin-top: 24px; align-items: center; flex-wrap: wrap; }
.search { position: relative; flex: 1 1 320px; max-width: 520px; }
.search svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.search input {
  width: 100%; height: 46px; padding: 0 44px 0 42px;
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 999px;
  transition: border-color .2s, background-color .2s, box-shadow .2s;
}
.search input::placeholder { color: #9CA3AF; }
.search input:focus { outline: none; background: var(--surface); border-color: var(--primary); box-shadow: 0 0 0 4px rgba(200, 16, 46, .12); }
.search input::-webkit-search-cancel-button { display: none; }
.search-clear {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 30px; height: 30px; border: 0; border-radius: 50%; background: transparent;
  color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
}
.search-clear:hover { background: var(--border); color: var(--text); }
.kbd {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .75rem;
  padding: 2px 6px; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 4px; color: var(--muted);
}
.hint, .search-status { font-size: .85rem; color: var(--muted); }

/* ---------- Layout: 2 Columns (Main Content + Sidebar) ---------- */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  padding: 32px 20px 56px;
  align-items: start;
}

/* ---------- Report Cards List ---------- */
.reports-list { display: flex; flex-direction: column; gap: 16px; }

.report-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.report-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.report-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.report-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: .85rem;
  color: var(--muted);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.badge-year {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .85rem;
  padding: 3px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
}
.badge-new {
  font-size: .7rem;
  font-weight: 700;
  padding: 2px 8px;
  background: var(--primary);
  color: #fff;
  border-radius: 999px;
  letter-spacing: .02em;
}

.report-title-link {
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text);
}
.report-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  transition: color .2s;
}
.report-card:hover .report-title {
  color: var(--primary);
}
.report-desc {
  font-size: .925rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.55;
}

.report-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}
.btn-open-pdf {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  padding: 6px 14px;
  background: var(--primary-soft);
  border-radius: 999px;
  transition: background-color .2s, color .2s;
}
.btn-open-pdf:hover {
  background: var(--primary);
  color: #fff;
}
.file-type-pill {
  font-size: .75rem;
  font-weight: 600;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ---------- Sidebar Cards ---------- */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}
.side-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}
.side-card-title svg {
  color: var(--primary);
}
.side-info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: .875rem;
}
.side-info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.side-info-label {
  font-size: .75rem;
  color: var(--muted);
  font-weight: 600;
}
.side-info-value {
  color: var(--text);
}
.side-info-value a {
  color: var(--primary);
  text-decoration: none;
}
.side-info-value a:hover {
  text-decoration: underline;
}

.quick-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.quick-link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text);
  transition: all .2s;
}
.quick-link-item:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary);
}
.quick-link-item svg {
  color: var(--muted);
  transition: transform .2s, color .2s;
}
.quick-link-item:hover svg {
  color: var(--primary);
  transform: translateX(3px);
}

/* Empty state */
.is-hidden { display: none !important; }
.empty-state {
  text-align: center; padding: 48px 24px; color: var(--muted);
  background: var(--surface); border: 1px dashed var(--border-strong); border-radius: var(--radius);
}
.empty-state strong { display: block; font-family: var(--font-head); color: var(--text); font-size: 1.1rem; margin-bottom: 4px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); padding: 24px 0; font-size: .85rem; color: var(--muted); }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }
.trust { display: inline-flex; align-items: center; gap: 8px; }
.trust svg { color: #15803D; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { order: 2; }
  .reports-list { order: 1; }
}
@media (max-width: 640px) {
  .hero-grid { grid-template-columns: 1fr; }
  .stats { gap: 20px; }
  .hint { display: none; }
  .brand img { height: 36px; }
  .btn-ghost span { display: none; }
  .report-card { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media print {
  .site-header, .toolbar, .skip-link, .sidebar { display: none !important; }
  .layout { display: block; padding: 0; }
  .report-card { break-inside: avoid; box-shadow: none; margin-bottom: 16px; }
}