/* Assembly guide — matches Hex shop dark aesthetic */
:root {
  --bg: #121418;
  --panel: #1c2028;
  --line: #2e3542;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --hex: #3d8bfd;
  --pent: #f0a202;
  --window: #7dcea0;
  --door: #c45c8a;
  --accent: #7dcea0;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.4 system-ui, sans-serif; }
#c { display: block; width: 100%; height: 100%; }
.ui {
  position: absolute; top: 12px; left: 12px; width: min(400px, calc(100% - 24px));
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
  backdrop-filter: blur(8px); max-height: calc(100% - 24px); overflow: auto;
}
h1 { font-size: 15px; margin: 0 0 4px; font-weight: 650; }
.sub { margin: 0 0 8px; color: var(--muted); font-size: 12px; }
h2 { font-size: 12px; margin: 12px 0 6px; font-weight: 650; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.row { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
button {
  background: #2a3140; color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font: inherit;
}
button:hover:not(:disabled) { border-color: #4a5568; }
button.active { background: #3a5a8a; border-color: var(--hex); }
button:disabled { opacity: 0.35; cursor: not-allowed; }
.step { width: 100%; text-align: left; font-size: 12px; padding: 5px 8px; }
.dims { color: var(--muted); font-size: 12px; white-space: pre-wrap; margin: 6px 0 0; }
.hint { color: var(--muted); font-size: 12px; margin-top: 8px; }
.hint a { color: var(--accent); }
.hint code { font-size: 11px; color: #c8d0dc; }
.legend span { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }
.cutbox {
  background: #161a22; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-size: 12px; color: var(--muted); white-space: pre-wrap;
  margin-top: 4px;
}
.navrow { display: flex; gap: 6px; align-items: center; margin: 8px 0; }
.navrow .spacer { flex: 1; color: var(--muted); font-size: 12px; text-align: center; }
.cutbox strong { color: var(--text); font-weight: 600; }

.ring-nav { margin: 6px 0 2px; }
.ring-label { color: var(--muted); font-size: 11px; margin-bottom: 4px; }
button.ring { font-size: 11px; padding: 4px 8px; }
button.ring.active { background: #3a5a8a; border-color: var(--hex); }