/* ============================================================
   FluorDB — Static Read-Only Site Stylesheet
   Fully self-contained: no external font/CDN requests.
   ============================================================ */

@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('../fonts/dm-mono-latin-300-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dm-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/dm-mono-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Mono';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dm-mono-latin-400-italic.woff2') format('woff2');
}

:root {
  --bg: #0a0c0f;
  --surface: #111318;
  --surface2: #181c23;
  --border: #1f2530;
  --border2: #2a3140;
  --text: #e8eaf0;
  --text-muted: #6b7585;
  --text-dim: #3d4656;
  --accent: #00e5ff;
  --accent2: #7c3aed;
  --accent3: #10b981;
  --warn: #f59e0b;
  --danger: #ef4444;
  --radius: 6px;
  --mono: 'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  overflow-x: hidden;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 0.9rem;
  overflow-x: hidden;
  width: 100%;
}

/* ── Nav ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 12, 15, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 54px;
  flex-wrap: wrap;
  gap: 0.5rem;
}
@media (max-width: 700px) {
  nav {
    padding: 0.5rem 1rem;
    height: auto;
  }
  .nav-links {
    gap: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .nav-links a {
    padding: 0.3rem 0.5rem;
    font-size: 0.72rem;
  }
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--text);
}
.nav-brand .logo-mark {
  width: 26px; height: 26px;
  background: conic-gradient(from 0deg, #00e5ff, #7c3aed, #10b981, #f59e0b, #00e5ff);
  border-radius: 50%;
  animation: spin 8s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.nav-brand span { font-size: 1rem; font-weight: 500; letter-spacing: 0.04em; }
.nav-brand .accent { color: var(--accent); }
.nav-links { display: flex; gap: 0.2rem; }
.nav-links a {
  color: var(--text-muted); text-decoration: none;
  padding: 0.35rem 0.75rem; border-radius: var(--radius);
  font-size: 0.8rem; font-weight: 400; letter-spacing: 0.03em;
  transition: all 0.15s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text); background: var(--surface2);
}
.nav-pill {
  background: var(--surface2) !important;
  border: 1px solid var(--border2);
  color: var(--accent) !important;
}
.nav-contribute {
  color: var(--text-muted) !important;
  border-color: var(--border2) !important;
  background: transparent !important;
  font-size: 0.75rem !important;
}
.nav-contribute:hover {
  color: var(--text) !important;
  background: var(--surface2) !important;
}

/* ── Layout ── */
main { max-width: 1200px; margin: 0 auto; padding: 2rem; }
@media (max-width: 700px) {
  main { padding: 1rem; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0.45rem 1rem; border-radius: var(--radius);
  font-family: var(--mono); font-size: 0.82rem; font-weight: 400;
  cursor: pointer; border: none; text-decoration: none;
  transition: all 0.15s; letter-spacing: 0.03em;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: #33eeff; transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { color: var(--text); background: var(--surface2); }
.btn-sm { padding: 0.28rem 0.65rem; font-size: 0.75rem; }

/* ── Inputs (search box only — no forms that submit data) ── */
input[type="text"] {
  width: 100%; background: var(--surface2);
  border: 1px solid var(--border2); border-radius: var(--radius);
  color: var(--text); font-family: var(--mono); font-size: 0.85rem;
  padding: 0.55rem 0.8rem; transition: border-color 0.15s;
}
input[type="text"]:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.08);
}

/* ── Tags ── */
.tag {
  display: inline-block; padding: 0.12rem 0.55rem;
  border-radius: 100px; font-size: 0.7rem; font-weight: 400;
  letter-spacing: 0.04em;
}
.tag-cat { background: var(--surface2); color: var(--text-muted); border: 1px solid var(--border2); }

/* ── Utility ── */
.muted { color: var(--text-muted); }
.divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.72rem;
  font-family: var(--mono);
  margin-top: 4rem;
}
footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

/* ============================================================
   Home page
   ============================================================ */
.hero { padding: 2.5rem 0 2rem; text-align: center; }
.hero-eyebrow {
  font-size: 0.72rem; color: var(--accent); letter-spacing: 0.2em;
  text-transform: uppercase; margin-bottom: 0.75rem;
}
.hero-title {
  font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 500;
  line-height: 1.2; letter-spacing: -0.01em; margin-bottom: 0.9rem;
}
.hero-title .gradient {
  background: linear-gradient(135deg, #00e5ff, #7c3aed 50%, #10b981);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 0.85rem; color: var(--text-muted); max-width: 480px;
  margin: 0 auto 1.75rem; line-height: 1.7;
}
.hero-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; margin-bottom: 2.5rem; }

.chart-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.chart-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; flex-wrap: wrap; gap: 0.75rem; }
.chart-title { font-size: 0.78rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; }
.axis-toggle { display: flex; gap: 0.6rem; align-items: center; }
.axis-toggle label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }
.toggle-group { display: flex; border: 1px solid var(--border2); border-radius: var(--radius); overflow: hidden; }
.toggle-btn {
  background: transparent; border: none; color: var(--text-muted);
  font-family: var(--mono); font-size: 0.75rem; padding: 0.3rem 0.75rem;
  cursor: pointer; transition: all 0.15s;
}
.toggle-btn:hover { background: var(--surface2); color: var(--text); }
.toggle-btn.active { background: var(--accent); color: #000; font-weight: 500; }
.toggle-btn.active-em { background: var(--accent3); color: #000; font-weight: 500; }
.chart-container { position: relative; height: 440px; }
.chart-hint { font-size: 0.7rem; color: var(--text-dim); text-align: center; margin-top: 0.6rem; letter-spacing: 0.04em; }

.empty-state { text-align: center; padding: 4rem 2rem; color: var(--text-muted); }
.empty-state .big { font-size: 3rem; margin-bottom: 1rem; }
.empty-state p { margin-bottom: 1.5rem; }

/* ============================================================
   Library page
   ============================================================ */
.library-header { margin-bottom: 1.5rem; }
.library-header h1 { font-size: 1.5rem; font-weight: 500; margin-bottom: 0.3rem; }

.filter-bar {
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.9rem; margin-bottom: 1.25rem;
  align-items: flex-end;
}
.filter-bar .fg { flex: 1; min-width: 160px; }
.filter-bar label {
  display: block; font-size: 0.68rem; font-weight: 500; color: var(--text-muted);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.4rem;
}

.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--border); }
thead th {
  text-align: left; padding: 0.7rem 1rem; font-size: 0.68rem; font-weight: 500;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase;
  background: var(--surface2); white-space: nowrap; user-select: none;
}
thead th.sortable { cursor: pointer; transition: color 0.15s; }
thead th.sortable:hover { color: var(--text); }
thead th.sort-active { color: var(--accent); }
.sort-arrow { display: inline-block; margin-left: 4px; font-size: 0.65rem; opacity: 0.5; }
thead th.sort-active .sort-arrow { opacity: 1; color: var(--accent); }

tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; cursor: pointer; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--surface2); }
td { padding: 0.75rem 1rem; font-size: 0.84rem; vertical-align: middle; color: var(--text); }
.td-name { font-weight: 500; }
.td-name a { color: var(--text); text-decoration: none; }
.td-name a:hover { color: var(--accent); }
.td-seq { font-size: 0.72rem; color: var(--text); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.color-swatch { display: inline-flex; align-items: center; gap: 6px; }
.swatch-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0; }

.count-label { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 0.6rem; }
.count-label .count-num { color: var(--accent); }
.empty-row td { text-align: center; padding: 3rem; color: var(--text-muted); }
.actions-cell { white-space: nowrap; }

/* ============================================================
   Detail page
   ============================================================ */
.detail-grid { display: grid; grid-template-columns: 1fr 300px; gap: 1.5rem; align-items: start; }
@media (max-width: 900px) { .detail-grid { grid-template-columns: 1fr; } }

.detail-header { margin-bottom: 1.75rem; }
.breadcrumb { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 0.6rem; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.detail-header h1 { font-size: 1.8rem; font-weight: 500; margin-bottom: 0.4rem; }
.detail-header .sub { display: flex; align-items: center; gap: 1rem; font-size: 0.82rem; color: var(--text-muted); }

.dna-block {
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 0.6rem 1rem;
  font-size: 0.88rem; letter-spacing: 0.08em; color: var(--accent3);
  word-break: break-all; margin-bottom: 1.5rem;
}
.dna-label { font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.3rem; }

.props-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 1.5rem;
}
.prop-cell { background: var(--surface); padding: 0.9rem 1.1rem; }
.prop-label { font-size: 0.68rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.25rem; }
.prop-value { font-size: 1rem; color: var(--text); }
.prop-value.big { font-size: 1.3rem; font-weight: 500; }

.chart-card.detail { padding: 1.25rem; margin-bottom: 1.5rem; }
.chart-card h3 { font-size: 0.72rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.9rem; }
.chart-container.detail { height: 220px; }

.sidebar-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; margin-bottom: 1rem; }
.sidebar-card h3 {
  font-size: 0.68rem; font-weight: 500; color: var(--text-muted);
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.65rem;
  padding-bottom: 0.5rem; border-bottom: 1px solid var(--border);
}
.meta-row { display: flex; justify-content: space-between; align-items: baseline; padding: 0.35rem 0; font-size: 0.78rem; border-bottom: 1px solid var(--border); }
.meta-row:last-child { border-bottom: none; }
.meta-key { color: var(--text-muted); flex-shrink: 0; margin-right: 0.5rem; }
.meta-val { text-align: right; max-width: 65%; word-break: break-all; }

.actions-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.description-block {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--radius);
  padding: 0.9rem 1.1rem; margin-bottom: 1.5rem;
  font-size: 0.87rem; line-height: 1.7; color: var(--text);
}

/* ============================================================
   Spectra viewer
   ============================================================ */
.viewer-header { margin-bottom: 1.75rem; }
.viewer-header h1 { font-size: 1.5rem; font-weight: 500; margin-bottom: 0.3rem; }
.viewer-layout { display: grid; grid-template-columns: 240px 1fr; gap: 1.5rem; align-items: start; }
@media (max-width: 800px) { .viewer-layout { grid-template-columns: 1fr; } }

.material-list { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.material-list-header { padding: 0.65rem 1rem; background: var(--surface2); border-bottom: 1px solid var(--border); font-size: 0.68rem; font-weight: 500; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; }
.material-item { display: flex; align-items: center; gap: 0.65rem; padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); cursor: pointer; transition: background 0.1s; user-select: none; }
.material-item:last-child { border-bottom: none; }
.material-item:hover { background: var(--surface2); }
.item-check { width: 15px; height: 15px; border-radius: 3px; border: 2px solid var(--border2); flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 9px; transition: all 0.15s; }
.item-color-bar { width: 4px; height: 32px; border-radius: 2px; flex-shrink: 0; }
.item-info { flex: 1; min-width: 0; }
.item-name { font-size: 0.82rem; font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.item-wavelengths { font-size: 0.68rem; color: var(--text-muted); }

.chart-card.viewer { padding: 1.5rem; }
.chart-container.viewer { height: 400px; }
.type-toggle-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; }
.type-toggle-row label { font-size: 0.68rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; margin: 0; }

.btn-row { display: flex; gap: 0.5rem; margin-top: 0.75rem; flex-wrap: wrap; }
.empty-msg { padding: 3rem; text-align: center; color: var(--text-muted); font-size: 0.88rem; }
.empty-msg a { color: var(--accent); }

/* ── Family tree (scoped to a single cluster's lineage, on the detail page) ── */
.family-tree-sub { font-size: 0.7rem; color: var(--text-dim); margin-bottom: 0.75rem; }
.family-tree-scroll { overflow: auto; min-height: 80px; max-height: 360px; border-radius: var(--radius); background: #0d0f13; }
.tree-node-label { font-family: var(--mono); font-size: 10px; fill: var(--text); }
.tree-node-circle { stroke: #000; stroke-width: 1.5px; cursor: pointer; }
.tree-node-circle:hover { stroke: var(--accent); stroke-width: 2.5px; }
.tree-node-circle.current { cursor: default; }
.tree-edge { stroke: var(--border2); stroke-width: 1.5px; fill: none; }
.tree-empty { padding: 1.25rem 1rem; text-align: center; font-size: 0.78rem; color: var(--text-dim); }

/* ── EC method color badges (library table) ── */
.ec-badge    { border-radius: 3px; padding: 1px 4px; font-size: 0.77em; display: inline-block; }
.ec-fcs      { background: rgba(100,200,255,0.15); border: 1px solid rgba(100,200,255,0.4); color: #7dd3fc; }
.ec-dna      { background: rgba(100,235,140,0.15); border: 1px solid rgba(100,235,140,0.4); color: #86efac; }
.ec-icpoes   { background: rgba(255,150,190,0.15); border: 1px solid rgba(255,150,190,0.4); color: #f9a8d4; }

/* ── Reference header tag ── */
.ref-header {
  font-size: 0.66rem; font-weight: 500; color: var(--accent);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.3rem;
}