:root {
  --bg: #0e1217;
  --surface: #161b22;
  --surface-2: #1d242d;
  --border: #2a333f;
  --text: #e8ecf1;
  --muted: #9aa6b4;
  --accent: #f2b544;
  --accent-ink: #231703;
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 16px;
}

h1, h2 { line-height: 1.2; margin: 0 0 .5rem; }
h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); letter-spacing: -0.02em; }
h2 { font-size: 1.3rem; }
p { margin: 0 0 .75rem; }
.muted { color: var(--muted); }

/* Header */
.site-header {
  padding: 40px 0 24px;
  background:
    radial-gradient(900px 300px at 20% 0%, rgba(242, 181, 68, .10), transparent 70%),
    linear-gradient(#131922, var(--bg));
}
.eyebrow {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .78rem;
  margin-bottom: .4rem;
}
.lede { color: var(--muted); max-width: 60ch; font-size: 1.05rem; }

/* Lab layout */
.lab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
  align-items: start;
}
@media (max-width: 960px) {
  .lab { grid-template-columns: minmax(0, 1fr); }
}

.stage {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #2b3140;
}
.stage canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
}
.stage-chip {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(10, 13, 18, .6);
  backdrop-filter: blur(4px);
  font-size: .85rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.stage-note {
  left: auto;
  right: 12px;
  font-weight: 500;
  color: var(--muted);
}
.stage-note[hidden] { display: none; }
.stage-hint {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  margin: 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(10, 13, 18, .65);
  backdrop-filter: blur(4px);
  font-size: .9rem;
  white-space: nowrap;
  transition: opacity .3s;
}
.stage-hint.hidden { opacity: 0; }
@media (max-width: 520px) {
  .stage-hint { font-size: .78rem; bottom: 8px; }
  .stage-chip { font-size: .75rem; top: 8px; left: 8px; }
  .stage-note { left: auto; right: 8px; }
}

/* Panel */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: grid;
  gap: 18px;
}
.control-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.control-head label, .control-label {
  font-weight: 600;
  font-size: .95rem;
}
.control-label { display: block; margin-bottom: 8px; }
.ef-badge {
  font-weight: 800;
  font-size: 1.1rem;
  padding: 2px 12px;
  border-radius: 8px;
  background: var(--sev-color, var(--accent));
  color: var(--sev-ink, var(--accent-ink));
  transition: background .2s;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  margin: 0;
  height: 28px;
  cursor: pointer;
}
.ticks {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--muted);
  padding: 0 2px;
}
.wind { margin: 8px 0 0; font-size: .92rem; font-variant-numeric: tabular-nums; }

.objects {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.obj-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 2px 5px;
  min-width: 0;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-size: .76rem;
  line-height: 1.15;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.obj-btn:hover { border-color: #3f4b5a; }
.obj-btn[aria-pressed="true"] {
  border-color: var(--accent);
  background: rgba(242, 181, 68, .12);
}
.obj-btn canvas { width: 52px; height: 40px; }

.actions { display: flex; gap: 8px; }
.btn {
  flex: 1;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { border-color: #3f4b5a; }
.btn.primary {
  flex: 2;
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn.primary:hover { filter: brightness(1.07); }
.btn:disabled { opacity: .55; cursor: default; filter: none; }
.btn:focus-visible, .obj-btn:focus-visible, .cell:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.result {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.result-kicker {
  color: var(--muted);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 2px;
}
.result h2 { font-size: 1.5rem; margin-bottom: .4rem; }
.result-text { min-height: 4.6em; }
.meter {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  margin-top: 4px;
}
.meter span {
  height: 10px;
  border-radius: 3px;
  background: var(--surface-2);
  transition: background .2s;
}
.meter-label {
  display: flex;
  justify-content: space-between;
  font-size: .8rem;
  color: var(--muted);
  margin: 6px 0 10px;
}
.meter-label span:last-child { color: var(--text); font-weight: 600; }
.fact {
  font-size: .85rem;
  color: var(--muted);
  margin: 0;
}

/* Sections */
.block {
  margin-top: 40px;
}
.section-lede { color: var(--muted); }

.matrix-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.matrix {
  width: 100%;
  min-width: 720px;
  border-collapse: separate;
  border-spacing: 6px;
  padding: 6px;
}
.matrix th {
  font-size: .82rem;
  font-weight: 600;
  color: var(--muted);
  text-align: center;
  padding: 4px;
}
.matrix th small { display: block; font-weight: 400; font-size: .72rem; }
.matrix th[scope="row"] {
  text-align: left;
  color: var(--text);
  white-space: nowrap;
}
.row-head { display: flex; align-items: center; gap: 8px; }
.row-head canvas { width: 40px; height: 30px; }
.cell {
  width: 100%;
  min-height: 52px;
  padding: 8px 6px;
  border-radius: 8px;
  border: 2px solid transparent;
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .1s;
}
.cell:hover { transform: translateY(-1px); }
.cell[aria-current="true"] {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px #fff;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
}
@media (max-width: 800px) {
  .two-col { grid-template-columns: minmax(0, 1fr); }
}
.ef-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: grid;
  gap: 6px;
}
.ef-list li {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: .92rem;
}
.ef-list .tag {
  font-weight: 800;
  text-align: center;
  border-radius: 6px;
  padding: 2px 0;
}
.ef-list .speed { color: var(--muted); font-variant-numeric: tabular-nums; }

.safety {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
  align-self: start;
}
.safety ul { margin: 0; padding-left: 1.2em; }
.safety li { margin-bottom: 6px; }

.site-footer {
  margin-top: 40px;
  padding-top: 20px;
  padding-bottom: 40px;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--border);
}