/* Tokens follow the dataviz reference palette (light + selected dark steps). */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f2f1ed;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #1c5cab;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --diverge-mid: #f0efec;
  --diverge-neg: #2a78d6;
  --diverge-pos: #e34948;
  --seq: #cde2fb, #9ec5f4, #6da7ec, #3987e5, #256abf, #1c5cab, #104281;
  --header: #13233a;
  --header-ink: #f0efec;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321; --ink: #f0efec; --ink-2: #c3c2b7;
    --muted: #898781; --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
    --accent: #6da7ec; --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70;
    --diverge-mid: #383835; --diverge-neg: #3987e5; --diverge-pos: #e66767;
    --header: #101826; --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321; --ink: #f0efec; --ink-2: #c3c2b7;
  --muted: #898781; --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
  --accent: #6da7ec; --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70;
  --diverge-mid: #383835; --diverge-neg: #3987e5; --diverge-pos: #e66767;
  --header: #101826; --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--page); color: var(--ink);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: 1.9rem; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 .8em; }
small, .muted { color: var(--ink-2); }
.num, td.num { font-variant-numeric: tabular-nums; text-align: right; }

/* --- header ------------------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 1000; display: flex; align-items: center; gap: 20px;
  padding: 10px 24px; background: var(--header); color: var(--header-ink);
}
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand span { display: flex; flex-direction: column; line-height: 1.15; }
.brand small { color: #aab3c2; font-size: .75rem; }
#nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; scrollbar-width: none; }
#nav a {
  color: #c9d1dd; text-decoration: none; padding: 7px 12px; border-radius: 8px; white-space: nowrap;
  font-size: .93rem;
}
#nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
#nav a.active { background: rgba(255,255,255,.14); color: #fff; font-weight: 600; }
.icon-btn {
  border: 1px solid var(--border); background: transparent; color: inherit; border-radius: 8px;
  width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer; font-size: 1.1rem;
}
.topbar .icon-btn { border-color: rgba(255,255,255,.2); }
.icon-btn svg { width: 18px; height: 18px; }

main { flex: 1; width: 100%; max-width: 1360px; margin: 0 auto; padding: 24px; }
main:focus { outline: none; }
.loading { padding: 80px 0; text-align: center; color: var(--muted); }
.error { padding: 16px; border-radius: 10px; background: color-mix(in srgb, #d03b3b 12%, var(--surface)); }
.footer { padding: 18px 24px 28px; font-size: .8rem; color: var(--muted); text-align: center; }

/* --- building blocks ------------------------------------------------------------------ */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px 20px; box-shadow: var(--shadow); min-width: 0;
}
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head h2, .card-head h3 { margin: 0; }
.grid { display: grid; gap: 18px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }
.stack > * + * { margin-top: 18px; }
@media (max-width: 960px) { .cols-2, .cols-3 { grid-template-columns: minmax(0, 1fr); } .span-2 { grid-column: auto; } }

.hero { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 28px; align-items: end; margin-bottom: 20px; }
.hero .lead { font-size: 1.05rem; color: var(--ink-2); max-width: 70ch; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--muted); font-weight: 600; margin-bottom: 6px; }
@media (max-width: 960px) { .hero { grid-template-columns: minmax(0, 1fr); } }

.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; }
.tile .v { font-size: 1.55rem; font-weight: 650; letter-spacing: -0.01em; }
.tile .l { font-size: .78rem; color: var(--ink-2); }
@media (max-width: 560px) { .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--border); background: var(--surface); color: var(--ink); border-radius: 999px;
  padding: 5px 12px; font: inherit; font-size: .86rem; cursor: pointer; text-decoration: none;
}
.chip:hover { border-color: var(--accent); }
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.on .muted { color: inherit; opacity: .8; }
.controls { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; margin-bottom: 10px; }
.controls label { font-size: .84rem; color: var(--ink-2); display: inline-flex; gap: 6px; align-items: center; }
select, input[type="range"] { font: inherit; font-size: .88rem; }
select {
  background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 8px;
}

table { border-collapse: collapse; width: 100%; font-size: .87rem; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--grid); text-align: left; vertical-align: top; }
th { color: var(--ink-2); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
.table-wrap { overflow-x: auto; }

.plot { width: 100%; min-height: 320px; }
.note { font-size: .82rem; color: var(--ink-2); }
.badge { display: inline-block; font-size: .72rem; padding: 1px 7px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--border); }
.swatch { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; border: 1px solid var(--border); }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .8rem; color: var(--ink-2); }

/* --- map ------------------------------------------------------------------------------ */
#map { height: 480px; border-radius: 10px; z-index: 0; }
.hole-label {
  background: var(--header); color: #fff; font-weight: 700; font-size: 12px; border-radius: 6px;
  padding: 1px 6px; border: 1px solid rgba(255,255,255,.6); white-space: nowrap;
}
.leaflet-popup-content { font: 13px/1.45 system-ui, sans-serif; }
.leaflet-container { background: var(--surface-2); }

/* --- hole page -------------------------------------------------------------------------- */
.hole-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(320px, 1fr); gap: 18px; align-items: start; }
@media (max-width: 1100px) { .hole-layout { grid-template-columns: minmax(0, 1fr); } }
.sticky { position: sticky; top: 72px; }
@media (max-width: 1100px) { .sticky { position: static; } }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 8px 16px; margin: 8px 0 14px; }
.facts div { font-size: .8rem; color: var(--ink-2); }
.facts b { display: block; color: var(--ink); font-size: 1rem; font-weight: 600; }
.lithbar { display: flex; height: 16px; border-radius: 6px; overflow: hidden; gap: 2px; margin: 6px 0 8px; }
.lithbar span { display: block; height: 100%; }
.box-photo img { width: 100%; border-radius: 8px; display: block; cursor: zoom-in; background: var(--surface-2); }
.box-nav { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 8px 0; }
.interval-desc { border-left: 3px solid var(--accent); padding: 4px 0 4px 10px; margin: 10px 0; font-size: .9rem; }
.el-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 4px; font-size: .78rem; }
.el-grid div { background: var(--surface-2); border-radius: 6px; padding: 4px 6px; }
.el-grid b { font-size: .86rem; }
.el-grid .bdl { color: var(--muted); }
.strip { display: flex; gap: 8px; overflow-x: auto; padding: 4px 2px 10px; scroll-snap-type: x proximity; }
.strip figure { margin: 0; flex: none; width: 150px; scroll-snap-align: start; cursor: pointer; }
.strip img { width: 150px; height: 100px; object-fit: cover; border-radius: 6px; display: block; border: 2px solid transparent; }
.strip figure.on img { border-color: var(--accent); }
.strip figcaption { font-size: .72rem; color: var(--ink-2); margin-top: 3px; }

/* --- galleries ------------------------------------------------------------------------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; }
.gallery figure { margin: 0; cursor: zoom-in; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; display: block; background: var(--surface-2); }
.gallery figcaption { font-size: .76rem; color: var(--ink-2); margin-top: 4px; line-height: 1.35; }
.collection-title { margin: 22px 0 8px; display: flex; gap: 8px; align-items: baseline; }

.lightbox {
  position: fixed; inset: 0; z-index: 2000; background: rgba(8, 10, 14, .92); display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 56px; align-items: center; color: #eee;
}
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 10px; max-height: 100vh; padding: 20px 0; }
.lightbox img { max-width: 100%; max-height: calc(100vh - 120px); object-fit: contain; border-radius: 6px; }
.lightbox figcaption { font-size: .9rem; text-align: center; max-width: 900px; }
.lightbox figcaption a { color: #9ec5f4; }
.lightbox .icon-btn { color: #fff; border-color: rgba(255,255,255,.25); margin: auto; width: 42px; height: 42px; font-size: 1.5rem; }
.lb-close { position: absolute; top: 14px; right: 14px; }

/* --- library -------------------------------------------------------------------------- */
.doc-list { display: grid; gap: 10px; }
.doc-item { display: block; text-decoration: none; color: inherit; }
.doc-item:hover { border-color: var(--accent); }
.prose { max-width: 78ch; }
.prose p { text-align: pretty; }
.figure-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.figure-grid figure { margin: 0; cursor: zoom-in; }
.figure-grid img { width: 100%; border-radius: 6px; border: 1px solid var(--border); background: #fff; display: block; }
.figure-grid figcaption { font-size: .78rem; color: var(--ink-2); margin-top: 4px; }
.glossary dt { font-weight: 600; margin-top: 10px; }
.glossary dd { margin: 2px 0 0; color: var(--ink-2); }
.xrd-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.xrd-card { text-align: left; font: inherit; color: inherit; cursor: pointer; }
.xrd-card.on { border-color: var(--accent); outline: 2px solid var(--accent); }