/* app.css — MET-AL "heavy-metal" dark theme: chrome/steel on near-black.
   Scientific content stays high-contrast and uncluttered. No external assets. */

:root {
  --bg:            #0a0b0d;
  --bg-2:          #101216;
  --panel:         #14171c;
  --panel-2:       #181c22;
  --steel:         #2a2f38;
  --steel-2:       #3a414c;
  --line:          #23272e;
  --ink:           #e8ebef;
  --ink-dim:       #aab2bd;
  --ink-faint:     #7b828d;
  --accent:        #6fd3ff;   /* cold cyan glow */
  --accent-warm:   #ffb648;
  --danger:        #ff6b6b;
  --chrome-hi:     #cfd6df;
  --radius:        9px;
  --radius-sm:     6px;
  --shadow:        0 2px 10px rgba(0,0,0,.55);
  --font: "Inter", "Helvetica Neue", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Menlo", "Consolas", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background:
    radial-gradient(1200px 600px at 70% -10%, #15191f 0%, rgba(21,25,31,0) 60%),
    linear-gradient(180deg, #0c0e11 0%, #060708 100%);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

body {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  height: 100vh;
  overflow: hidden;
}

/* ---------------- Header ---------------- */
.app-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(38,43,51,.55) 0%, rgba(12,14,17,.9) 100%);
  box-shadow: var(--shadow);
}
.app-header .logo {
  height: 46px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.8));
}
.app-title {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  border-left: 1px solid var(--steel);
  padding-left: 16px;
}
.app-title .t1 {
  font-weight: 700;
  letter-spacing: .14em;
  font-size: 13px;
  text-transform: uppercase;
  background: linear-gradient(180deg, #f4f7fb 0%, #9aa3ae 55%, #5e6671 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.app-title .t2 {
  color: var(--ink-faint);
  font-size: 11.5px;
  letter-spacing: .03em;
}
.header-spacer { flex: 1; }
.theme-tag {
  font-size: 11px;
  color: var(--ink-dim);
  text-align: right;
  border: 1px solid var(--steel);
  border-radius: 999px;
  padding: 4px 12px;
  background: linear-gradient(180deg, rgba(58,65,76,.4), rgba(20,23,28,.6));
}
.theme-tag b { color: var(--accent); }
.synthetic-badge {
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #0a0b0d;
  font-weight: 800;
  background: linear-gradient(180deg, #ffd27a, #f0a93a);
  border-radius: 5px;
  padding: 3px 8px;
  margin-left: 10px;
}

/* ---------------- Controls ---------------- */
#controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: stretch;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
}
.ctl-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 10px;
  background: linear-gradient(180deg, rgba(36,40,48,.55), rgba(16,18,22,.75));
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
}
.ctl-head { display: flex; align-items: baseline; gap: 8px; }
.ctl-title {
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--chrome-hi);
}
.ctl-hint { font-size: 10.5px; color: var(--ink-faint); }
.ctl-body { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.mini-hint { font-size: 10px; color: var(--ink-faint); width: 100%; }

/* metric chips */
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--steel-2);
  background: linear-gradient(180deg, #20242b, #14171c);
  color: var(--ink-dim);
  border-radius: 7px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  transition: border-color .12s, color .12s, transform .06s;
  font-family: var(--mono);
}
.chip:hover { color: var(--ink); border-color: var(--accent); }
.chip:active { transform: translateY(1px); }
.chip .swatch {
  width: 9px; height: 9px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25);
  background: transparent;
}
.chip .chip-lt { font-size: 9px; color: var(--ink-faint); letter-spacing: .05em; }
.chip.active { color: var(--ink); border-color: var(--steel-2); background: linear-gradient(180deg,#2b323b,#1a1e24); }
.chip.primary {
  border-color: var(--accent);
  color: #eaf8ff;
  box-shadow: 0 0 0 1px rgba(111,211,255,.35), 0 0 12px rgba(111,211,255,.18);
}
.chip.primary .chip-lt { color: var(--accent); }

/* segmented control */
.segmented {
  display: inline-flex;
  border: 1px solid var(--steel-2);
  border-radius: 7px;
  overflow: hidden;
  background: #12151a;
}
.seg {
  border: 0;
  background: transparent;
  color: var(--ink-dim);
  font-size: 12px;
  padding: 5px 10px;
  cursor: pointer;
  border-right: 1px solid var(--steel);
  transition: background .12s, color .12s;
  font-family: var(--mono);
}
.seg:last-child { border-right: 0; }
.seg:hover { color: var(--ink); background: rgba(111,211,255,.06); }
.seg.active {
  color: #eaf8ff;
  background: linear-gradient(180deg, rgba(111,211,255,.22), rgba(111,211,255,.07));
  box-shadow: inset 0 0 0 1px rgba(111,211,255,.3);
}

/* filter pills */
.filter-wrap { display: flex; gap: 14px; flex-wrap: wrap; }
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group-label {
  font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint);
}
.filter-group.disabled { opacity: .4; pointer-events: none; }
.pills { display: flex; gap: 4px; flex-wrap: wrap; }
.pill {
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--steel);
  background: #15181d;
  color: var(--ink-faint);
  border-radius: 999px;
  padding: 3px 9px;
  font-size: 11.5px;
  cursor: pointer;
  transition: all .12s;
  font-family: var(--mono);
}
.pill .pill-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: transparent; visibility: hidden;
  border: 1px solid rgba(255,255,255,.2);
}
.pill:hover { border-color: var(--accent); color: var(--ink); }
.pill.on {
  color: var(--ink);
  border-color: var(--steel-2);
  background: linear-gradient(180deg, #262c34, #181c21);
}
.pill:not(.on) { text-decoration: line-through; opacity: .55; }

/* toggle + reset + readout */
.toggle {
  display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--steel-2);
  background: linear-gradient(180deg,#20242b,#14171c);
  color: var(--ink-dim);
  border-radius: 7px; padding: 5px 10px; font-size: 12px; cursor: pointer;
}
.toggle .led {
  width: 9px; height: 9px; border-radius: 50%;
  background: #2a2f38; border: 1px solid #444b56;
  box-shadow: inset 0 0 2px rgba(0,0,0,.6);
}
.toggle.on { color: #eaf8ff; border-color: var(--accent); }
.toggle.on .led { background: var(--accent); box-shadow: 0 0 8px var(--accent); border-color: var(--accent); }
.btn-reset {
  border: 1px solid var(--steel-2);
  background: linear-gradient(180deg,#2a1d1d,#1a1414);
  color: #ffb3b3; border-radius: 7px; padding: 5px 12px; font-size: 12px; cursor: pointer;
}
.btn-reset:hover { border-color: var(--danger); color: #ffd7d7; }
.readout {
  font-size: 12px; color: var(--ink-dim);
  font-family: var(--mono);
  padding: 4px 0;
}
.readout strong { color: var(--accent); font-size: 13px; }
.ro-dim { color: var(--ink-faint); }
.ro-brush { color: var(--accent-warm); }

/* ---------------- Main grid (views) ---------------- */
.app-main {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  grid-template-rows: 1fr 1fr;
  grid-template-areas:
    "line  table"
    "facet facet";
  gap: 12px;
  padding: 12px 16px;
  min-height: 0;
  overflow: hidden;
}
.panel {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.03);
  display: flex; flex-direction: column;
  min-height: 0; min-width: 0;
  position: relative;
}
.panel-line  { grid-area: line; }
.panel-table { grid-area: table; }
.panel-facet { grid-area: facet; }
.panel-head {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(42,47,56,.5), rgba(16,18,22,.2));
  border-radius: var(--radius) var(--radius) 0 0;
}
.panel-head .pview {
  font-size: 10px; font-weight: 800; letter-spacing: .14em;
  color: #0a0b0d; background: linear-gradient(180deg,#cfd6df,#8d96a1);
  border-radius: 4px; padding: 2px 7px;
}
.panel-head .ptitle { font-size: 12.5px; font-weight: 600; color: var(--ink); }
.panel-head .phint { font-size: 11px; color: var(--ink-faint); margin-left: auto; }
.panel-body { flex: 1; min-height: 0; min-width: 0; position: relative; padding: 6px 8px 8px; }

/* line plot */
.plot-wrap { position: absolute; inset: 6px 8px 8px; }
.plot-svg { display: block; width: 100%; height: 100%; }
.grid { stroke: #1c2026; stroke-width: 1; }
.grid-x { stroke: #161a1f; }
.ref-line { stroke: #4a525d; stroke-dasharray: 4 4; stroke-width: 1; }
.axis-label { fill: var(--ink-faint); font-size: 10px; font-family: var(--mono); }
.axis-label.sm { font-size: 8.5px; }
.axis-title { fill: var(--ink-dim); font-size: 11px; font-weight: 600; }
.series-line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.series-line.thin { stroke-width: 1.4; }
.series-dot { stroke: #0a0b0d; stroke-width: .6; }
.series-dot.out { opacity: .28; }
.ci-band { opacity: .14; stroke: none; }
.brush-mask { fill: rgba(8,9,11,.62); }
.brush-active { fill: rgba(111,211,255,.05); stroke: rgba(111,211,255,.35); stroke-width: 1; }
.capture { cursor: crosshair; }
.capture.dragging { cursor: ew-resize; }
.legend-text { fill: var(--ink-dim); font-size: 11px; font-family: var(--mono); }

/* tooltip */
.tooltip {
  position: absolute; z-index: 20; pointer-events: none;
  min-width: 150px;
  background: linear-gradient(180deg, rgba(28,32,39,.98), rgba(14,16,20,.98));
  border: 1px solid var(--steel-2);
  border-radius: var(--radius-sm);
  box-shadow: 0 6px 18px rgba(0,0,0,.6);
  padding: 7px 9px;
  font-size: 11.5px;
}
.tt-head { font-family: var(--mono); color: var(--ink); margin-bottom: 5px; font-size: 11px; }
.tt-head b { color: var(--accent); }
.tt-row { display: grid; grid-template-columns: 10px 1fr auto auto; gap: 6px; align-items: center; padding: 1px 0; }
.tt-dot { width: 8px; height: 8px; border-radius: 50%; }
.tt-key { color: var(--ink-dim); font-family: var(--mono); }
.tt-val { color: var(--ink); font-family: var(--mono); font-weight: 700; }
.tt-ci { color: var(--ink-faint); font-family: var(--mono); font-size: 10px; }
.tt-foot { color: var(--ink-faint); font-size: 10px; margin-top: 5px; border-top: 1px solid var(--line); padding-top: 4px; }

/* ---------------- Table ---------------- */
.panel-table .panel-body { padding: 0; display: flex; flex-direction: column; }
.table-head-bar {
  display: flex; align-items: baseline; gap: 8px;
  padding: 7px 12px; border-bottom: 1px solid var(--line);
  font-size: 11px;
}
.th-metric { font-family: var(--mono); font-weight: 700; color: var(--accent); font-size: 13px; }
.th-sub { color: var(--ink-faint); }
.th-spark-hint { color: var(--ink-faint); margin-left: auto; font-size: 10px; }
.table-scroll { overflow: auto; flex: 1; }
.summary-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.summary-table thead th {
  position: sticky; top: 0; z-index: 2;
  background: linear-gradient(180deg,#1c2027,#14171c);
  color: var(--ink-dim);
  font-size: 10px; letter-spacing: .08em; text-transform: uppercase;
  text-align: right; padding: 7px 10px;
  border-bottom: 1px solid var(--steel);
  white-space: nowrap;
}
.summary-table th.h-group { text-align: left; }
.summary-table th.sortable { cursor: pointer; }
.summary-table th.sortable:hover { color: var(--ink); }
.summary-table th.sort-desc::after { content: " ▾"; color: var(--accent); }
.summary-table th.sort-asc::after  { content: " ▴"; color: var(--accent); }
.summary-table td { padding: 5px 10px; text-align: right; border-bottom: 1px solid #181b20; }
.data-row { cursor: pointer; transition: background .1s; }
.data-row:hover { background: rgba(111,211,255,.06); }
.data-row.selected { background: linear-gradient(90deg, rgba(111,211,255,.16), rgba(111,211,255,.05)); }
.data-row.selected td { border-bottom-color: rgba(111,211,255,.25); }
.data-row.dimmed { opacity: .4; }
.cell-group { text-align: left !important; }
.row-swatch { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 7px; vertical-align: middle; border: 1px solid rgba(255,255,255,.18); }
.row-key { font-family: var(--mono); color: var(--ink); }
.cell-num { font-family: var(--mono); color: var(--ink); }
.cell-num.sub { color: var(--ink-faint); font-size: 11px; }
.cell-n { font-family: var(--mono); color: var(--ink-faint); font-size: 11px; }
.cell-spark { text-align: center; width: 120px; }
.spark { display: block; margin: 0 auto; }
.spark-line { fill: none; stroke-width: 1.5; }

/* ---------------- Facets ---------------- */
.panel-facet .panel-body { display: flex; flex-direction: column; padding: 0; }
.facet-head {
  display: flex; gap: 10px; align-items: baseline;
  padding: 7px 12px; border-bottom: 1px solid var(--line); font-size: 11px;
}
.facet-title { font-weight: 600; color: var(--ink); }
.facet-sub { color: var(--ink-faint); }
.facet-grid {
  flex: 1; min-height: 0; overflow: auto;
  display: grid;
  grid-template-columns: repeat(var(--facet-cols, 3), 1fr);
  gap: 8px; padding: 10px;
}
.facet-grid.empty { display: flex; align-items: center; justify-content: center; }
.facet-empty { color: var(--ink-faint); font-size: 13px; }
.facet-empty b { color: var(--accent); }
.facet-cell {
  display: flex; flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(10,12,15,.5);
  min-height: 150px;
}
.facet-cap {
  font-size: 10.5px; font-family: var(--mono); color: var(--ink-dim);
  padding: 4px 8px; border-bottom: 1px solid var(--line);
  background: rgba(28,32,39,.4);
}
.facet-plot { flex: 1; position: relative; min-height: 110px; }
.facet-svg { display: block; width: 100%; height: 100%; }

/* ---------------- Footer ---------------- */
.app-footer {
  display: flex; align-items: center; gap: 14px;
  padding: 7px 18px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16,18,22,.6), rgba(6,7,8,.9));
  font-size: 11px; color: var(--ink-faint);
}
.app-footer .syn { color: var(--accent-warm); font-weight: 700; }
.app-footer .sep { color: var(--steel-2); }
.app-footer a { color: var(--ink-dim); text-decoration: none; border-bottom: 1px dotted var(--steel-2); }
#data-meta { font-family: var(--mono); }

/* boot status */
#boot-status {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--ink-dim); font-family: var(--mono); font-size: 13px; z-index: 50;
  background: var(--bg);
}
#boot-status.boot-error { color: var(--danger); padding: 40px; text-align: center; }

/* focus visibility for a11y */
button:focus-visible, .pill:focus-visible, .seg:focus-visible, .chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* responsive: stack on narrow screens */
@media (max-width: 900px) {
  .app-main {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    grid-template-areas: "line" "table" "facet";
    overflow: auto;
  }
  body { overflow: auto; height: auto; min-height: 100vh; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}