/* =====================================================================
 * css/theme.css — heavy-metal chrome/steel-on-near-black theme
 * ---------------------------------------------------------------------
 * Dark, metallic aesthetic to match assets/met-al_logo.png. Scientific
 * content stays high-contrast and uncluttered. No external fonts/assets —
 * system font stack only, so it works fully offline.
 * ===================================================================== */

:root {
  --bg: #07080a;
  --bg-2: #0b0d10;
  --panel: #14181d;
  --panel-2: #181d23;
  --edge: #2a3037;
  --edge-2: #3a424b;
  --chrome-hi: #d7dde3;
  --chrome-lo: #6c757e;
  --steel: #9aa6b1;
  --text: #c8d0d8;
  --text-dim: #8a929b;
  --accent: #d94f30;        /* molten orange */
  --accent-2: #5fa8d3;      /* cool steel-blue */
  --ok: #5db075;
  --err: #e0625a;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 70% -10%, #15191f 0%, transparent 60%),
    linear-gradient(180deg, #0a0c0f 0%, #07080a 100%);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); }

code { font-family: var(--mono); font-size: 0.92em; }

/* ---- metallic surface mixin (via class) ---- */
.metal {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0) 14%, rgba(0,0,0,0.25) 100%),
    linear-gradient(180deg, var(--panel-2) 0%, var(--panel) 100%);
  border: 1px solid var(--edge);
  border-top-color: var(--edge-2);
  border-radius: 8px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 8px 22px rgba(0,0,0,0.45);
}

/* ---- header ---- */
header.app-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--edge);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(0,0,0,0.3)),
    linear-gradient(90deg, #0c0e12, #11151a);
  box-shadow: 0 6px 18px rgba(0,0,0,0.5);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.app-header img.logo {
  height: 64px;
  width: auto;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.6));
}
.title-block h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(180deg, var(--chrome-hi), var(--chrome-lo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}
.title-block .subtitle {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.title-block .theme-tag {
  display: inline-block;
  margin-top: 3px;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  border: 1px solid rgba(217,79,48,0.4);
  border-radius: 4px;
  padding: 1px 6px;
}
.header-spacer { flex: 1; }
.synthetic-badge {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: #1a1208;
  background: linear-gradient(180deg, #e8b964, #c2933f);
  border-radius: 4px;
  padding: 4px 9px;
  font-weight: 700;
  text-transform: uppercase;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

/* ---- layout ---- */
main {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  padding: 16px 22px 40px;
  max-width: 1500px;
  margin: 0 auto;
}
.col-controls { display: flex; flex-direction: column; gap: 14px; }
.col-results { display: flex; flex-direction: column; gap: 16px; }

.panel { padding: 14px 16px; }
.panel h2 {
  margin: 0 0 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--steel);
  border-bottom: 1px solid var(--edge);
  padding-bottom: 7px;
}
.panel h2 .sub { color: var(--text-dim); text-transform: none; letter-spacing: 0; font-weight: 400; }

.status-bar {
  font-size: 12px;
  color: var(--text-dim);
  padding: 8px 16px;
  border-radius: 6px;
}
.status-bar strong { color: var(--text); }

/* ---- facets ---- */
.facet { display: flex; flex-direction: column; gap: 4px; margin-bottom: 10px; }
.facet-label { font-size: 11px; color: var(--text-dim); letter-spacing: 0.04em; }
select, input[type="text"], input[type="number"] {
  background: #0a0c0f;
  color: var(--text);
  border: 1px solid var(--edge);
  border-radius: 5px;
  padding: 6px 8px;
  font-family: var(--sans);
  font-size: 13px;
}
select:focus, input:focus { outline: none; border-color: var(--accent-2); box-shadow: 0 0 0 2px rgba(95,168,211,0.18); }

.valid-range { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 4px; }
.valid-range input { width: 100%; }
.hint { font-size: 10.5px; color: var(--text-dim); margin-top: 6px; }

button.btn, .op-btn, .chip {
  cursor: pointer;
  border: 1px solid var(--edge-2);
  border-radius: 5px;
  color: var(--text);
  background: linear-gradient(180deg, #1c2228, #13171b);
  font-family: var(--mono);
}
button.btn:hover, .op-btn:hover, .chip:hover { border-color: var(--steel); }
button.btn { padding: 6px 12px; font-size: 12px; margin-top: 8px; }

/* ---- threshold ---- */
.thr-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
input[type="range"] { flex: 1; accent-color: var(--accent); }
#thr-num { width: 78px; }
.thr-bounds { font-size: 11px; color: var(--text-dim); }
.op-row { display: flex; gap: 6px; margin: 8px 0; flex-wrap: wrap; }
.op-btn { padding: 5px 10px; font-size: 13px; }
.op-btn.active {
  background: linear-gradient(180deg, var(--accent), #a93a22);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(217,79,48,0.4), 0 2px 6px rgba(217,79,48,0.3);
}
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.chip { padding: 3px 9px; font-size: 12px; }

/* ---- compiled query ---- */
.compiled {
  background: #060708;
  border: 1px solid var(--edge);
  border-left: 3px solid var(--accent-2);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  color: #aeb9c4;
  white-space: pre-wrap;
  overflow-x: auto;
}

/* ---- contingency table ---- */
.ct-wrap { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
table.contingency { border-collapse: collapse; }
table.contingency th, table.contingency td {
  border: 1px solid var(--edge-2);
  padding: 8px 14px;
  text-align: center;
  font-family: var(--mono);
}
table.contingency th { background: #11151a; color: var(--text-dim); font-weight: 600; font-size: 11px; }
table.contingency td .cell-val { font-size: 18px; color: var(--chrome-hi); }
table.contingency td .cell-tag { font-size: 9.5px; color: var(--text-dim); display: block; }
.ct-cell-a { background: rgba(93,176,117,0.08); }
.ct-cell-b { background: rgba(217,79,48,0.08); }
.ct-cell-c { background: rgba(217,79,48,0.08); }
.ct-cell-d { background: rgba(95,168,211,0.06); }
.ct-total { font-size: 13px; color: var(--text-dim); }
.ct-total strong { color: var(--chrome-hi); font-size: 16px; font-family: var(--mono); }

/* ---- stat grid ---- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px;
}
.stat-card {
  position: relative;
  background: linear-gradient(180deg, #171c21, #11141880);
  border: 1px solid var(--edge);
  border-radius: 7px;
  padding: 10px 8px 8px;
  text-align: center;
  transition: border-color 0.12s, transform 0.12s;
  cursor: help;
}
.stat-card:hover, .stat-card:focus {
  border-color: var(--accent-2);
  transform: translateY(-1px);
  outline: none;
  z-index: 5;
}
.stat-val {
  font-family: var(--mono);
  font-size: 20px;
  color: var(--chrome-hi);
  letter-spacing: -0.01em;
}
.stat-name { font-size: 11px; color: var(--steel); margin-top: 2px; letter-spacing: 0.03em; }
.stat-tip {
  display: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: calc(100% + 6px);
  width: 230px;
  background: #0a0c0f;
  border: 1px solid var(--edge-2);
  border-radius: 6px;
  padding: 9px 11px;
  z-index: 30;
  box-shadow: 0 10px 26px rgba(0,0,0,0.6);
  text-align: left;
}
.stat-card:hover .stat-tip, .stat-card:focus .stat-tip { display: block; }
.tip-full { font-size: 11.5px; color: var(--text); margin-bottom: 5px; }
.tip-formula code { color: var(--accent-2); font-size: 11.5px; }
.tip-meta { font-size: 10.5px; color: var(--text-dim); margin-top: 5px; }

.cnt-context {
  display: flex;
  gap: 18px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-dim);
}
.cnt-context strong { color: var(--chrome-hi); font-family: var(--mono); }

/* ---- diagrams ---- */
.diagram-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.diagram-card { padding: 14px 16px 10px; }
.diagram-card canvas { width: 100%; height: 360px; display: block; border-radius: 6px; }
.diagram-card .cap { font-size: 11px; color: var(--text-dim); margin-top: 6px; }

/* ---- fidelity ---- */
.fid-ctc { font-size: 11.5px; color: var(--text-dim); margin-bottom: 10px; }
.fid-ctc span { margin-right: 6px; }
#fidelity-rows h4 { margin: 14px 0 6px; font-size: 12px; color: var(--steel); letter-spacing: 0.05em; }
table.fid-table { width: 100%; border-collapse: collapse; font-size: 12px; }
table.fid-table th {
  text-align: left; color: var(--text-dim); font-weight: 600; font-size: 11px;
  border-bottom: 1px solid var(--edge); padding: 5px 8px;
}
table.fid-table td { border-bottom: 1px solid #1b2026; padding: 6px 8px; vertical-align: top; }
table.fid-table code { color: var(--accent-2); }
.fid-full { font-size: 10.5px; color: var(--text-dim); }

/* ---- future architecture ---- */
.future-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.future-item {
  border: 1px dashed var(--edge-2);
  border-radius: 6px;
  padding: 10px 12px;
  background: rgba(95,168,211,0.03);
}
.future-item .ft-name { color: var(--accent-2); font-family: var(--mono); font-size: 13px; }
.future-item .ft-desc { font-size: 11.5px; color: var(--text-dim); margin-top: 4px; }
.future-note {
  font-size: 11px; color: var(--text-dim); margin-top: 10px;
  border-left: 3px solid var(--accent); padding-left: 10px;
}

/* ---- drop zone ---- */
.drop-zone {
  border: 1.5px dashed var(--edge-2);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  transition: border-color 0.12s, background 0.12s;
}
.drop-zone.drag { border-color: var(--accent); background: rgba(217,79,48,0.06); color: var(--text); }
.drop-zone label.file-pick {
  display: inline-block; margin-top: 6px; cursor: pointer;
  color: var(--accent-2); text-decoration: underline;
}
.drop-zone input[type="file"] { display: none; }
.drop-note { font-size: 11px; margin-top: 8px; }
.drop-note.ok { color: var(--ok); }
.drop-note.err { color: var(--err); }

/* ---- meta panel ---- */
#meta-info { font-size: 11.5px; line-height: 1.7; }
#meta-info code { color: var(--steel); }
#meta-info strong { color: var(--accent); }

footer.app-footer {
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
  padding: 18px;
  border-top: 1px solid var(--edge);
}

@media (max-width: 980px) {
  main { grid-template-columns: 1fr; }
  .diagram-grid { grid-template-columns: 1fr; }
  .future-grid { grid-template-columns: 1fr; }
}