:root {
  --fg: #1b1d22;
  --muted: #586068;
  --bg: #fafbfc;
  --panel: #ffffff;
  --accent: #2b6cb0;
  --border: #e3e6ea;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0 0.6rem;
}
.site-header h1 { margin: 0 0 0.1rem; font-size: 1.4rem; }
.site-header .tagline { margin: 0 0 0.6rem; color: var(--muted); }
.site-header nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}
.site-header nav a.active, .site-header nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

main { padding: 1.5rem 0 3rem; }
h2 { font-size: 1.4rem; margin-top: 0.5rem; }
.small { color: var(--muted); font-size: 0.88rem; }

.intro p { font-size: 1.05rem; max-width: 60ch; }

.breadcrumb { margin: 0 0 0.25rem; font-size: 0.85rem; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.cite-inline { color: var(--muted); font-weight: 400; font-size: 0.85em; }
.card-sub { margin: 0.1rem 0 0.5rem; color: var(--muted); font-size: 0.9rem; }
.tag {
  display: inline-block; font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase;
  background: #eef2f6; color: var(--muted); padding: 0.15rem 0.55rem; border-radius: 100px; margin-bottom: 0.5rem;
}
.atlas-picker { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.card.big { padding: 1.6rem 1.5rem; }
.card.big h2 { font-size: 1.3rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.card {
  display: block; padding: 1.1rem 1.2rem;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  text-decoration: none; color: var(--fg);
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-1px); }
.card h2 { margin: 0 0 0.4rem; font-size: 1.1rem; color: var(--accent); }
.card p { margin: 0; color: var(--muted); font-size: 0.93rem; }

.citation { margin-top: 2rem; }
.citation blockquote {
  margin: 0.6rem 0; padding: 0.8rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--panel); border-radius: 0 6px 6px 0;
  font-size: 0.95rem;
}

footer { padding: 1.5rem 0; border-top: 1px solid var(--border); margin-top: 2rem; }

/* Plates page */
.plane-tabs { display: flex; gap: 0.4rem; margin: 1rem 0; flex-wrap: wrap; }
.tab {
  padding: 0.45rem 1rem; border: 1px solid var(--border); background: var(--panel);
  border-radius: 6px; cursor: pointer; font-size: 0.95rem; color: var(--fg);
}
.tab.active { background: var(--accent); color: white; border-color: var(--accent); }
.thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.8rem; }
.thumb {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  padding: 0.4rem; cursor: pointer; text-align: center; font-size: 0.85rem;
  color: var(--muted);
}
.thumb img { width: 100%; display: block; border-radius: 4px; }
.thumb:hover { border-color: var(--accent); }

.lightbox {
  position: fixed; inset: 0; background: rgba(0,0,0,0.85);
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  padding: 2rem; z-index: 100;
}
.lightbox.hidden { display: none; }
.lightbox img { max-width: 100%; max-height: 85vh; background: white; }
.lightbox-caption { color: white; margin-top: 0.6rem; font-size: 0.95rem; }
.lightbox-close {
  position: absolute; top: 1rem; right: 1.4rem; background: none; border: none;
  color: white; font-size: 2.2rem; cursor: pointer;
}

/* Regions table */
#region-search {
  width: 100%; max-width: 420px;
  padding: 0.55rem 0.75rem; font-size: 1rem;
  border: 1px solid var(--border); border-radius: 6px; background: var(--panel);
}
.region-table { width: 100%; border-collapse: collapse; margin-top: 0.8rem; background: var(--panel); }
.region-table th, .region-table td {
  text-align: left; padding: 0.5rem 0.7rem; border-bottom: 1px solid var(--border); font-size: 0.93rem;
}
.region-table th { color: var(--muted); font-weight: 600; background: #f1f3f5; }
.swatch { display: inline-block; width: 18px; height: 18px; border-radius: 4px; vertical-align: middle; }
.region-table tr.hidden { display: none; }

/* Viewer */
.container.viewer-page { max-width: 1400px; }
.viewer-page .viewer-shell {
  display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1rem; margin-top: 0.8rem;
}
@media (max-width: 720px) {
  .viewer-page .viewer-shell { grid-template-columns: 1fr; }
}
.viewer-stage { display: flex; flex-direction: column; gap: 0.6rem; }
.primary-wrap, .locator-wrap { position: relative; }
#nv-primary {
  width: 100%; aspect-ratio: 1 / 1; height: clamp(520px, 70vh, 820px);
  background: black; border-radius: 6px; display: block;
}
#nv-locator {
  width: 100%; height: clamp(140px, 18vh, 200px);
  background: black; border-radius: 6px; display: block;
}
.plate-readout {
  position: absolute; left: 0.7rem; top: 0.6rem;
  background: rgba(0,0,0,0.55); color: #fff; padding: 0.2rem 0.55rem;
  border-radius: 4px; font-size: 0.85rem; pointer-events: none;
}
.hover-label {
  position: absolute; pointer-events: none;
  background: rgba(0,0,0,0.78); color: #fff;
  padding: 0.25rem 0.55rem; border-radius: 4px;
  font-size: 0.88rem; line-height: 1.25;
  max-width: 18rem; white-space: nowrap;
  transform: translate(0.7rem, 0.7rem);
  z-index: 5;
}
.hover-label.hidden { display: none; }
.hover-label b { font-weight: 700; margin-right: 0.3rem; }
.locator-label {
  position: absolute; left: 0.7rem; top: 0.5rem;
  background: rgba(0,0,0,0.55); color: #fff; padding: 0.1rem 0.45rem;
  border-radius: 4px; font-size: 0.75rem; pointer-events: none;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.viewer-side {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 1rem;
}
.region-readout { margin-bottom: 1rem; }
.readout-label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.readout-name-row { display: flex; align-items: center; gap: 0.5rem; margin: 0.25rem 0; }
.readout-swatch {
  display: inline-block; width: 18px; height: 18px; border-radius: 4px;
  border: 1px solid var(--border); background: transparent; flex: 0 0 auto;
}
.readout-name { font-size: 1.35rem; font-weight: 600; }
.controls { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 1rem; }
.controls label { font-size: 0.9rem; }
.controls input[type="range"] { width: 100%; }
.plane-picker {
  border: 1px solid var(--border); border-radius: 6px; padding: 0.4rem 0.6rem 0.5rem;
  display: flex; flex-direction: column; gap: 0.25rem;
}
.plane-picker legend { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; padding: 0 0.3rem; }
.plane-picker label { display: flex; align-items: center; gap: 0.4rem; }

/* Print: when a single plate is opened in the lightbox or on a dedicated print, hide chrome */
@media print {
  .site-header, footer, .plane-tabs, .lightbox-close, .controls, .viewer-side, .locator-wrap, .plate-readout, .locator-label, .hover-label, nav, #region-search { display: none !important; }
  body { background: white; }
  .lightbox { position: static; padding: 0; background: white; }
  .lightbox img { max-height: none; width: 100%; }
  .container { max-width: 100%; padding: 0; }
}