/* D1 MHK public site — provincial research archive
   Palette: crimson (MSU institutional) committed strategy, paper white, ink.
   Type: Noto Serif Thai (display) + Noto Sans Thai (body). Thai-first. */

:root {
  /* CI: Maha Sarakham provincial palette (60-30-10)
     cream 45% / sage 25% / harvest 15% / terracotta 8% / forest-ink 7% */
  --crimson: #4e7a77;      /* interactive sage — white text passes AA */
  --brand: #5a8b88;        /* sage hero */
  --crimson-deep: #2a4b4a; /* deep forest teal */
  --crimson-tint: #e4ebe9; /* sage tint on cream */
  --gold: #e4c758;         /* harvest yellow — CTA */
  --terra: #b87b4c;        /* terracotta */
  --paper: #edecd4;
  --surface: #ffffff;
  --ink: #1f2421;
  --ink-soft: #47514d;
  --ink-mute: #5f6a66;
  --line: #ddd9c2;
  --line-strong: #cfc9ae;
  --ok: #2e6b46;
  --focus: #b87b4c;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-1: 0 1px 2px rgb(34 27 24 / 0.06), 0 1px 6px rgb(34 27 24 / 0.05);
  --shadow-2: 0 4px 14px rgb(34 27 24 / 0.10), 0 1px 3px rgb(34 27 24 / 0.06);
  --font-display: "Noto Serif Thai", "Noto Serif", serif;
  --font-body: "Noto Sans Thai", "Noto Sans", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

img { max-width: 100%; display: block; }

.container { max-width: 1160px; margin-inline: auto; padding-inline: 20px; }

/* ---------- Top bar + header ---------- */

.topbar {
  background: var(--crimson-deep);
  color: #f4e9e7;
  font-size: 13px;
}
.topbar-inner {
  display: flex; justify-content: space-between; gap: 16px;
  padding-block: 7px; align-items: center;
}
.topbar a { color: var(--gold); }

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 40;
}
.site-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; padding-block: 14px;
}
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }
.brand-mark {
  width: 46px; height: 46px; flex: none;
  border-radius: 12px;
  background: var(--crimson);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-size: 21px; font-weight: 700;
  box-shadow: inset 0 0 0 2px rgb(255 255 255 / 0.22);
}
.brand-text { min-width: 0; }
.brand-title {
  font-family: var(--font-display);
  font-size: 19px; font-weight: 700; line-height: 1.3;
  color: var(--crimson-deep);
  text-wrap: balance;
}
.brand-sub { font-size: 12.5px; color: var(--ink-mute); line-height: 1.3; }

.nav { display: flex; gap: 6px; align-items: center; }
.nav a {
  padding: 9px 14px; border-radius: 999px;
  color: var(--ink-soft); font-weight: 600; font-size: 15px;
  text-decoration: none;
}
.nav a:hover { background: var(--crimson-tint); color: var(--crimson-deep); text-decoration: none; }
.nav a[aria-current="page"] { background: var(--crimson); color: #fff; }

.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav {
    display: none;
    position: absolute; inset-inline: 0; top: 100%;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; padding: 10px 20px 16px;
    box-shadow: var(--shadow-2);
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 10px; border-radius: 8px; font-size: 16px; }
  .nav-toggle {
    display: inline-grid; place-items: center;
    width: 46px; height: 46px;
    border: 1px solid var(--line-strong); border-radius: 10px;
    background: var(--surface); color: var(--ink); cursor: pointer;
  }
}

/* ---------- Hero ---------- */

.hero {
  background:
    radial-gradient(1100px 500px at 85% -10%, rgb(90 139 136 / 0.20), transparent 60%),
    linear-gradient(var(--crimson-tint), var(--paper));
  border-bottom: 1px solid var(--line);
}
.hero-inner { padding-block: clamp(40px, 7vw, 84px); max-width: 780px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; color: var(--crimson-deep);
  background: rgb(255 255 255 / 0.7);
  border: 1px solid rgb(90 139 136 / 0.45);
  padding: 5px 14px; border-radius: 999px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.22;
  margin: 18px 0 12px;
  color: var(--crimson-deep);
  text-wrap: balance;
  letter-spacing: 0;
}
.hero p.lede {
  font-size: clamp(16px, 2vw, 18.5px);
  color: var(--ink-soft);
  margin: 0 0 26px;
  max-width: 62ch;
  text-wrap: pretty;
}

.searchbox { display: flex; gap: 10px; }
.searchbox input[type="search"] {
  flex: 1; min-width: 0;
  font-family: var(--font-body); font-size: 17px;
  padding: 15px 18px;
  border: 1.5px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-1);
}
.searchbox input[type="search"]::placeholder { color: var(--ink-mute); }
.searchbox button {
  flex: none;
  font-family: var(--font-body); font-size: 16.5px; font-weight: 700;
  padding: 15px 26px; min-height: 52px;
  background: var(--gold); color: #1f2421;
  border: 0; border-radius: 14px; cursor: pointer;
  box-shadow: var(--shadow-1);
}
.searchbox button:hover { background: #d9b73e; }

.hero-stats {
  display: flex; flex-wrap: wrap; gap: 10px 26px;
  margin-top: 24px; font-size: 14.5px; color: var(--ink-soft);
}
.hero-stats strong {
  font-family: var(--font-display);
  font-size: 20px; color: var(--crimson-deep); margin-right: 5px;
}

/* ---------- Sections ---------- */

.section { padding-block: clamp(34px, 5vw, 58px); }
.section + .section { padding-top: 0; }

.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 22px;
  border-bottom: 2px solid var(--crimson);
  padding-bottom: 10px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 27px);
  margin: 0; color: var(--ink);
  text-wrap: balance;
}
.section-head .more { font-weight: 600; white-space: nowrap; font-size: 15px; }

/* ---------- Cards (whole-card click) ---------- */

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(262px, 1fr));
  gap: 22px;
}

.card {
  position: relative;
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform .22s cubic-bezier(.22,.8,.36,1), box-shadow .22s ease, border-color .22s ease;
}
.card:hover, .card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: rgb(184 123 76 / 0.55);
}
.card-media {
  aspect-ratio: 16 / 10; overflow: hidden;
  background:
    repeating-linear-gradient(-45deg, var(--crimson-tint) 0 14px, #fff 14px 28px);
}
.card-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .3s cubic-bezier(.22,.8,.36,1);
}
.card:hover .card-media img { transform: scale(1.04); }
.card-body { padding: 15px 17px 17px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.card-meta {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-size: 12.5px; font-weight: 600;
}
.chip {
  background: var(--crimson-tint); color: var(--crimson-deep);
  padding: 2.5px 10px; border-radius: 999px;
}
.chip.gold { background: rgba(228 199 88 / 0.4); color: #57430e; }
.card-title {
  font-family: var(--font-display);
  font-size: 17.5px; line-height: 1.45; font-weight: 700;
  margin: 0; color: var(--ink);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  text-wrap: balance;
}
.card-sub { font-size: 13.5px; color: var(--ink-mute); }

/* the whole card is the link */
.card-link { position: absolute; inset: 0; z-index: 1; border-radius: var(--radius-lg); }
.card:hover .card-link { text-decoration: none; }

/* ---------- Filters (browser page) ---------- */

.filterbar {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-1);
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 12px;
  position: sticky; top: 78px; z-index: 30;
}
@media (max-width: 980px) { .filterbar { grid-template-columns: 1fr 1fr; position: static; } }
@media (max-width: 560px) { .filterbar { grid-template-columns: 1fr; } }

.field label {
  display: block; font-size: 12.5px; font-weight: 600;
  color: var(--ink-mute); margin-bottom: 4px;
}
.field select, .field input {
  width: 100%;
  font-family: var(--font-body); font-size: 15px;
  padding: 10px 12px; min-height: 46px;
  border: 1.5px solid var(--line-strong); border-radius: 10px;
  background: var(--surface); color: var(--ink);
}
.resultbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 14px; margin: 22px 0 18px; font-size: 14.5px; color: var(--ink-soft);
}
.resultbar .clear { font-weight: 600; }

/* ---------- Pagination ---------- */
.paginator { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-top: 34px; }
.paginator a, .paginator span {
  min-width: 44px; min-height: 44px;
  display: inline-grid; place-items: center; padding-inline: 12px;
  border-radius: 10px; border: 1px solid var(--line-strong);
  font-weight: 600; font-size: 15px; color: var(--ink-soft);
  background: var(--surface);
}
.paginator .current { background: var(--crimson); color: #fff; border-color: var(--crimson); }
.paginator a:hover { border-color: var(--crimson); color: var(--crimson-deep); text-decoration: none; }

/* ---------- Empty state ---------- */
.empty {
  text-align: center; padding: 60px 20px;
  border: 1.5px dashed var(--line-strong); border-radius: var(--radius-lg);
  background: var(--surface);
}
.empty .glyph { font-size: 40px; margin-bottom: 8px; }
.empty h3 { font-family: var(--font-display); margin: 0 0 6px; font-size: 20px; }
.empty p { margin: 0 0 16px; color: var(--ink-mute); }

/* ---------- Detail page ---------- */

.crumbs { font-size: 13.5px; color: var(--ink-mute); padding-block: 18px; }
.crumbs a { color: var(--ink-mute); }

.detail-head {
  background: linear-gradient(var(--crimson-tint), var(--paper));
  border-bottom: 1px solid var(--line);
}
.detail-head-inner { padding-block: clamp(26px, 4vw, 46px); }
.detail-head h1 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 38px); line-height: 1.3;
  margin: 10px 0 14px; color: var(--crimson-deep);
  text-wrap: balance; max-width: 30ch;
}
.detail-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px 22px; margin-top: 16px;
}
.detail-meta div { font-size: 14.5px; }
.detail-meta dt { font-weight: 600; color: var(--ink-mute); font-size: 12.5px; }
.detail-meta dd { margin: 2px 0 0; }

.detail-body {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px;
  gap: 36px; padding-block: 34px 60px;
}
@media (max-width: 900px) { .detail-body { grid-template-columns: 1fr; } }

.detail-figure {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line); background: var(--surface);
  box-shadow: var(--shadow-1);
}
.detail-figure img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.detail-figure figcaption { padding: 10px 14px; font-size: 13px; color: var(--ink-mute); }

.prose-section { margin-bottom: 30px; }
.prose-section h2 {
  font-family: var(--font-display); font-size: 20px;
  color: var(--crimson-deep);
  border-bottom: 2px solid var(--crimson);
  padding-bottom: 8px; margin: 0 0 12px;
}
.prose-section p { white-space: pre-line; overflow-wrap: anywhere; }

.aside-box {
  background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 20px; box-shadow: var(--shadow-1);
}
.aside-box h3 {
  font-family: var(--font-display); font-size: 17px; margin: 0 0 12px;
  color: var(--ink);
}
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: 14px; }
.kv dt { color: var(--ink-mute); }
.kv dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 46px; padding: 10px 20px;
  border: 1.5px solid var(--crimson); border-radius: 12px;
  color: var(--crimson-deep); font-weight: 600; font-size: 15px;
  background: var(--surface);
}
.btn-secondary:hover { background: var(--crimson-tint); text-decoration: none; }

/* ---------- Org strip ---------- */
.org-strip { display: flex; flex-wrap: wrap; gap: 12px; }
.org-strip a {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 9px 18px;
  font-weight: 600; font-size: 14.5px; color: var(--ink-soft);
  box-shadow: var(--shadow-1);
}
.org-strip a:hover { border-color: var(--crimson); color: var(--crimson-deep); text-decoration: none; }
.org-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--crimson); }

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 60px;
  background: var(--crimson-deep);
  color: #edecd4;
}
.site-footer-inner {
  display: flex; flex-wrap: wrap; gap: 20px 40px;
  justify-content: space-between; align-items: center;
  padding-block: 30px;
}
.site-footer a { color: var(--gold); }
.footer-note { font-size: 13.5px; line-height: 1.7; }
.footer-note strong { color: #fff; }

/* ---------- Motion ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
.rise { animation: rise .5s cubic-bezier(.22,.8,.36,1) both; }
.rise-2 { animation: rise .5s .08s cubic-bezier(.22,.8,.36,1) both; }
.rise-3 { animation: rise .5s .16s cubic-bezier(.22,.8,.36,1) both; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .card:hover { transform: none; }
  .card:hover .card-media img { transform: none; }
}

/* ---------- Rich text (detail sections) ---------- */
.prose-html { color: var(--ink); overflow-wrap: anywhere; }
.prose-html p { margin: 0 0 12px; }
.prose-html ol, .prose-html ul { margin: 0 0 12px; padding-left: 26px; }
.prose-html li { margin-bottom: 6px; }
.prose-html strong { color: var(--ink); }
.prose-html img { border-radius: 10px; margin: 10px 0; }
.prose-html a { word-break: break-word; }

/* ---------- Slideshow (fade) ---------- */
.slider { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-1); border: 1px solid var(--line); background: #2a4b4a; aspect-ratio: 6 / 5; max-height: 78vh; }
@media (max-width: 700px) { .slider { aspect-ratio: 1 / 1; } }
.slider-slide {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden;
  transition: opacity .7s ease, visibility 0s linear .7s;
}
.slider-slide.on {
  opacity: 1; visibility: visible;
  transition: opacity .7s ease;
  z-index: 1;
}
.slider-slide img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  transform: scale(1.001);
}
.slider-slide.on img { animation: slowzoom 5.6s ease-out forwards; }
@keyframes slowzoom { from { transform: scale(1.001); } to { transform: scale(1.05); } }
.slider-cap {
  position: absolute; inset-inline: 0; bottom: 0;
  background: linear-gradient(transparent, rgb(30 8 12 / 0.82));
  color: #fff; padding: 46px 22px 16px;
  font-size: 15px; font-weight: 600;
}
.slider-cap a { color: #fff; }
.slider-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: 0; cursor: pointer;
  background: rgb(255 255 255 / 0.85); color: var(--ink);
  display: grid; place-items: center;
  box-shadow: var(--shadow-1); font-size: 20px; line-height: 1; z-index: 3;
}
.slider-btn:hover { background: #fff; }
.slider-btn.prev { left: 12px; }
.slider-btn.next { right: 12px; }
.slider-dots { position: absolute; bottom: 14px; right: 18px; display: flex; gap: 8px; z-index: 3; }
.slider-dot { width: 11px; height: 11px; border-radius: 50%; border: 0; padding: 0; cursor: pointer; background: rgb(255 255 255 / 0.5); transition: background .3s, transform .3s; }
.slider-dot.on { background: #fff; transform: scale(1.25); }

/* ---------- Map view ---------- */
.view-toggle { display: inline-flex; border: 1.5px solid var(--line-strong); border-radius: 12px; overflow: hidden; }
.view-toggle button {
  min-height: 44px; padding: 8px 18px; border: 0; cursor: pointer;
  background: var(--surface); color: var(--ink-soft); font-weight: 600; font-size: 15px;
  font-family: var(--font-body);
}
.view-toggle button.on { background: var(--crimson); color: #fff; }
#research-map { height: clamp(420px, 65vh, 640px); border-radius: var(--radius-lg); border: 1px solid var(--line); box-shadow: var(--shadow-1); z-index: 1; }
.map-note { font-size: 13.5px; color: var(--ink-mute); margin-top: 10px; }

/* ---------- Map clusters & pins (d1 CI) ---------- */
.d1-cluster-wrap { background: none !important; border: 0 !important; }
.d1-cluster {
  display: grid; place-items: center;
  border-radius: 50%;
  color: #fff; font-weight: 700; font-family: var(--font-body);
  box-shadow: 0 2px 8px rgb(31 36 33 / 0.35), inset 0 0 0 3px rgb(255 255 255 / 0.35);
  text-align: center; line-height: 1.05;
}
.d1-cluster span { display: block; transform: translateY(1px); }
.d1c-s   { width: 42px; height: 42px; font-size: 14px; background: #4e7a77; }
.d1c-m   { width: 52px; height: 52px; font-size: 16px; background: #b87b4c; }
.d1c-l   { width: 62px; height: 62px; font-size: 18px; background: #c2601f; }
.d1c-xl  { width: 74px; height: 74px; font-size: 21px; background: #a33224; }
.d1-cluster-wrap:hover .d1-cluster { filter: brightness(1.12); }

.d1-pin-wrap { background: none !important; border: 0 !important; }
.d1-pin {
  width: 34px; height: 34px; border-radius: 50% 50% 50% 4px;
  transform: rotate(-45deg);
  display: grid; place-items: center;
  background: #2a4b4a; color: #fff;
  font-size: 15px;
  box-shadow: 0 2px 6px rgb(31 36 33 / 0.4), inset 0 0 0 2px rgb(255 255 255 / 0.4);
  transition: transform .15s ease;
}
.d1-pin i { transform: rotate(45deg); font-style: normal; display: block; margin-top: 2px; font-size: 16px; }
.d1-pin-org { background: #b87b4c; }
.d1-pin-wrap:hover .d1-pin { transform: rotate(-45deg) scale(1.15); }

#research-map .leaflet-popup-content { font-family: var(--font-body); font-size: 14px; line-height: 1.6; }
#research-map .leaflet-popup-content-wrapper { border-radius: 12px; }