/* METACYC(LE) — orrery aesthetic. brass + walnut + verdigris + ivory.
 * 4th distinct flavor per CLAUDE.md aesthetic-variety rule.
 * The vibe: precision instrument cabinet, late-19th-century observatory.
 */

:root {
  --walnut-0: #1a120a;
  --walnut-1: #221709;
  --walnut-2: #2c1e0d;
  --walnut-rim: #3d2a14;
  --brass-0: #c9a25a;
  --brass-1: #a98744;
  --brass-deep: #8a6932;
  --verdigris: #6b8f7b;
  --verdigris-deep: #3f5d51;
  --oxblood: #a0322a;
  --ivory-0: #f0e6d2;
  --ivory-1: #d4c7ad;
  --ivory-2: #9b8e76;
  --shadow-deep: rgba(0, 0, 0, 0.55);
  --font-display: 'Major Mono Display', 'IBM Plex Mono', monospace;
  --font-sans: 'Familjen Grotesk', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', monospace;
  --pad: 22px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    /* a barely-visible engraved circle in the corner */
    radial-gradient(900px 700px at 88% 92%, rgba(201, 162, 90, 0.05), transparent 65%),
    /* warm pool of light from above */
    radial-gradient(1200px 500px at 50% -10%, rgba(201, 162, 90, 0.08), transparent 70%),
    /* fine wood-grain — repeating slow horizontals */
    repeating-linear-gradient(
      0deg,
      transparent 0 18px,
      rgba(255, 215, 145, 0.012) 18px 19px
    ),
    linear-gradient(180deg, var(--walnut-0) 0%, var(--walnut-1) 100%);
  color: var(--ivory-0);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

/* ---------- top brass strip ---------- */
.brass-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px var(--pad);
  border-bottom: 1px solid var(--walnut-rim);
  background:
    linear-gradient(180deg, rgba(201, 162, 90, 0.06) 0%, transparent 100%),
    var(--walnut-1);
  color: var(--ivory-1);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.strip-left, .strip-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand {
  color: var(--brass-0);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.1em;
}

.rivet {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brass-1);
  box-shadow: 0 0 0 1px var(--walnut-2), 0 1px 1px rgba(0,0,0,0.6) inset;
}

.surface-name {
  color: var(--ivory-1);
  letter-spacing: 0.15em;
}

.strip-right a {
  transition: color 0.18s;
}
.strip-right a:hover { color: var(--brass-0); }

/* ---------- main grid ---------- */
.orrery-shell {
  width: min(1600px, 100%);
  margin: 0 auto;
  padding: 26px var(--pad) 26px;
}

.toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.title-block {
  display: grid;
  gap: 5px;
}

.kicker {
  margin: 0;
  color: var(--brass-0);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: var(--ivory-0);
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.04em;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--ivory-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: end;
}

.controls label {
  display: grid;
  gap: 4px;
  color: var(--ivory-2);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.controls select,
.controls button {
  height: 38px;
  border: 1px solid var(--brass-deep);
  background: var(--walnut-2);
  color: var(--ivory-0);
  font: 500 12px var(--font-mono);
  padding: 0 12px;
  letter-spacing: 0.06em;
}

.controls button {
  cursor: pointer;
  text-transform: uppercase;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}

.controls select:focus,
.controls button:focus,
.controls button:hover {
  border-color: var(--brass-0);
  color: var(--brass-0);
  outline: none;
  background: rgba(201, 162, 90, 0.04);
}

#help-toggle {
  width: 38px;
  padding: 0;
  border-radius: 50%;
  font-weight: 700;
}

/* ---------- breadcrumb ---------- */
.crumb-trail {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.4rem 0 0.8rem;
  font: 400 0.78rem var(--font-mono);
  color: var(--ivory-2);
  letter-spacing: 0.05em;
}
.crumb-trail .crumb {
  border: 1px solid var(--walnut-rim);
  padding: 0.18rem 0.55rem;
  cursor: pointer;
  background: var(--walnut-2);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.crumb-trail .crumb:hover {
  border-color: var(--brass-0);
  color: var(--brass-0);
}
.crumb-trail .crumb.root { border-style: dashed; }
.crumb-trail .crumb.tip {
  border-color: var(--brass-0);
  color: var(--brass-0);
  cursor: default;
}
.crumb-trail .crumb.tip:hover { background: transparent; }
.crumb-trail .crumb-sep {
  color: var(--walnut-rim);
  user-select: none;
}

/* ---------- stage ---------- */
.stage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}

.viz-panel, .meta-panel {
  border: 1px solid var(--walnut-rim);
  background:
    linear-gradient(180deg, var(--walnut-2) 0%, var(--walnut-1) 100%);
  position: relative;
}

.viz-panel {
  min-height: 760px;
  overflow: hidden;
  /* engraved inner border */
  box-shadow:
    inset 0 0 0 1px rgba(201, 162, 90, 0.06),
    inset 0 0 24px rgba(0, 0, 0, 0.5);
}

#orrery-canvas {
  display: block;
  width: 100%;
  height: min(80vh, 900px);
  min-height: 720px;
  cursor: grab;
}
#orrery-canvas:active { cursor: grabbing; }

.canvas-overlay {
  position: absolute;
  bottom: 12px;
  left: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: none;
  font: 400 0.75rem var(--font-mono);
  color: var(--ivory-2);
  letter-spacing: 0.04em;
}

.legend {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  background: rgba(26, 18, 10, 0.65);
  border: 1px solid var(--walnut-rim);
  padding: 0.35rem 0.7rem;
}
.legend-swatch {
  display: inline-block;
  width: 0.65rem; height: 0.65rem;
  border-radius: 50%;
  margin-right: 0.3rem;
  vertical-align: -1px;
}
.legend-swatch.alive { background: var(--brass-0); box-shadow: 0 0 6px rgba(201, 162, 90, 0.6); }
.legend-swatch.stagnant { background: var(--verdigris); }
.legend-swatch.broken { background: var(--oxblood); }

.loading-hint {
  margin: 0;
  font-style: italic;
  color: var(--ivory-2);
  background: rgba(26, 18, 10, 0.55);
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--walnut-rim);
}
.loading-hint.hidden { display: none; }

/* ---------- help overlay ---------- */
.help-overlay {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(26, 18, 10, 0.94);
  border: 1px solid var(--brass-deep);
  padding: 1rem 1.2rem 1.1rem;
  max-width: 320px;
  z-index: 5;
  font: 400 0.82rem var(--font-mono);
  color: var(--ivory-0);
  letter-spacing: 0.03em;
  box-shadow: 0 14px 32px var(--shadow-deep);
}
.help-overlay.hidden { display: none; }
.help-overlay h3 {
  margin: 0 0 0.55rem;
  font: 400 0.95rem var(--font-display);
  letter-spacing: 0.16em;
  color: var(--brass-0);
}
.help-overlay ul { list-style: none; margin: 0 0 0.65rem; padding: 0; }
.help-overlay li { margin: 0.28rem 0; }
.help-overlay kbd {
  background: rgba(201, 162, 90, 0.12);
  border: 1px solid var(--brass-deep);
  padding: 0 0.4rem;
  font-family: inherit;
  color: var(--brass-0);
}
.help-overlay .help-hint {
  margin: 0.4rem 0 0;
  font-style: italic;
  color: var(--ivory-2);
}

/* ---------- meta panel ---------- */
.meta-panel {
  position: sticky;
  top: 12px;
  max-height: calc(100vh - 24px);
  overflow: auto;
  padding: 16px;
}

.meta-empty {
  margin: 0;
  color: var(--ivory-2);
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.08em;
}

.meta-panel h2 {
  margin: 0 0 10px;
  color: var(--ivory-0);
  font: 400 22px var(--font-display);
  letter-spacing: 0.06em;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 14px;
}

.meta-pill {
  border: 1px solid var(--walnut-rim);
  color: var(--ivory-1);
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.meta-pill.state-alive { border-color: var(--brass-0); color: var(--brass-0); }
.meta-pill.state-stagnant { border-color: var(--verdigris); color: var(--verdigris); }
.meta-pill.state-broken { border-color: var(--oxblood); color: var(--oxblood); }

.meta-panel p {
  color: var(--ivory-1);
  margin: 8px 0;
}

.meta-section-title {
  display: block;
  margin: 14px 0 6px;
  color: var(--ivory-2);
  font: 600 10px var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.meta-list {
  display: grid;
  gap: 5px;
}

.meta-item {
  border: 1px solid var(--walnut-rim);
  background: var(--walnut-2);
  color: var(--ivory-1);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 7px 9px;
  letter-spacing: 0.04em;
}
.meta-item .item-state {
  display: inline-block;
  width: 0.55rem; height: 0.55rem;
  border-radius: 50%;
  margin-right: 0.45rem;
  vertical-align: 0;
}
.meta-item .item-state.alive { background: var(--brass-0); }
.meta-item .item-state.stagnant { background: var(--verdigris); }
.meta-item .item-state.broken { background: var(--oxblood); }

/* ---------- footer ---------- */
.brass-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px var(--pad) 22px;
  color: var(--ivory-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-top: 1px solid var(--walnut-rim);
  margin-top: 12px;
}
.brass-foot #live-stamp {
  color: var(--brass-0);
  font-variant-numeric: tabular-nums;
}
.brass-foot #live-stamp.stale { color: var(--oxblood); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .toolbar, .brass-strip { flex-direction: column; align-items: flex-start; }
  .stage-grid { grid-template-columns: 1fr; }
  .meta-panel { position: static; max-height: none; }
}

@media (max-width: 680px) {
  :root { --pad: 14px; }
  h1 { font-size: 32px; }
  .viz-panel { min-height: 580px; }
  #orrery-canvas { min-height: 580px; height: 70vh; }
}