/* Chemistry network: one stage (WebGL or SVG), DOM labels and tooltip, flat legend and table. */
.cn-card .lab-chart { display: grid; gap: 12px; }
.cn-summary { margin: 0; color: var(--ink-2); font-size: .84rem; line-height: 1.5; font-variant-numeric: tabular-nums; }
.cn-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 10px 14px; }
.cn-field { display: grid; gap: 4px; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cn-field select { min-height: 36px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); padding: 0 10px; font: inherit; font-size: .85rem; letter-spacing: 0; text-transform: none; }
.cn-controls .cn-view { margin-left: 0; align-self: end; }
.cn-view button:disabled { opacity: .4; cursor: not-allowed; }
.cn-status { flex: 1 1 220px; min-width: 0; color: var(--muted); font-size: .78rem; line-height: 1.45; align-self: center; }
.cn-status:empty { display: none; }

.cn-stage { position: relative; height: clamp(360px, 40vw, 520px); border-radius: 16px; border: 1px solid #25302a; overflow: hidden; isolation: isolate; contain: layout paint;
  background: radial-gradient(ellipse 62% 58% at 50% 46%, rgba(215, 250, 129, .05), transparent 72%), radial-gradient(ellipse 40% 9% at 50% 93%, rgba(0, 0, 0, .38), transparent 72%), linear-gradient(180deg, #0d1211, #090d0c); }
.cn-stage::after { content: ''; position: absolute; inset: 0; pointer-events: none; border-radius: inherit; box-shadow: inset 0 1px rgba(241, 240, 230, .04), inset 0 0 60px rgba(0, 0, 0, .35); }
.cn-stage:has(.cn-surface:focus-visible), .cn-stage:has(.cn-a11y button:focus) { outline: 2px solid var(--s1); outline-offset: 3px; }
.cn-surface { position: absolute; inset: 0; touch-action: pan-y; cursor: grab; outline: none; -webkit-user-select: none; user-select: none; }
.cn-canvas, .cn-svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.cn-canvas[hidden], .cn-empty[hidden] { display: none; }
.cn-svg-halo { fill: #d7fa81; fill-opacity: 0; }
.cn-svg-shade { fill: #090d0c; }
.cn-svg-ring { fill: none; stroke: #d7fa81; stroke-width: 2.5; stroke-opacity: 0; }
.cn-svg-node.is-focus .cn-svg-halo { fill-opacity: .16; }
.cn-svg-node.is-focus .cn-svg-ring { stroke-opacity: 1; }
.cn-labels { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.cn-label { position: absolute; left: 0; top: 0; display: inline-flex; gap: 5px; align-items: baseline; padding: 1px 7px 2px; border-radius: 999px; background: rgba(9, 13, 12, .7); color: var(--ink-2); font-size: 11.5px; line-height: 1.35; white-space: nowrap; will-change: transform; transition: opacity .15s ease; }
.cn-label b { font-weight: 600; color: var(--ink); }
.cn-label small { color: var(--muted); font-size: 10px; font-variant-numeric: tabular-nums; }
.cn-label.is-focus { background: #d7fa81; }
.cn-label.is-focus b, .cn-label.is-focus small { color: #10160f; }
.cn-tip { position: absolute; left: 0; top: 0; z-index: 4; pointer-events: none; display: grid; gap: 3px; max-width: min(300px, calc(100% - 12px)); padding: 9px 11px; border-radius: 10px; background: #1b2420; border: 1px solid #3a473f; box-shadow: 0 12px 30px rgba(0, 0, 0, .45); color: var(--ink-2); font-size: .78rem; line-height: 1.4; opacity: 0; transition: opacity .12s ease; font-variant-numeric: tabular-nums; }
.cn-tip strong { color: var(--ink); font-size: .84rem; font-weight: 650; }
.cn-tip span:last-child { color: var(--muted); font-size: .72rem; }
.cn-tip.on { opacity: 1; }
.cn-toolbar { position: absolute; top: 10px; right: 10px; z-index: 3; display: flex; gap: 6px; }
.cn-tool { min-width: 34px; height: 32px; padding: 0 11px; border-radius: 999px; border: 1px solid #36423a; background: rgba(12, 17, 16, .8); color: var(--ink-2); font: inherit; font-size: .78rem; line-height: 1; cursor: pointer; backdrop-filter: blur(6px); }
.cn-tool:hover, .cn-tool:focus-visible { border-color: var(--s1); color: var(--ink); }
.cn-tool.on { background: #d7fa81; border-color: #d7fa81; color: #10160f; font-weight: 650; }
.cn-tool:disabled { opacity: .42; cursor: not-allowed; }
.cn-empty { position: absolute; inset: 0; z-index: 2; display: grid; place-items: center; margin: 0; padding: 24px; text-align: center; color: var(--muted); font-size: .9rem; background: rgba(9, 13, 12, .6); }
.cn-hint { margin: -4px 0 0; color: var(--muted); font-size: .74rem; line-height: 1.5; }

.cn-legend { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(0, 1.6fr); gap: 14px 28px; align-items: start; padding-top: 2px; }
.cn-key { display: flex; align-items: center; gap: 10px; min-width: 0; font-size: .8rem; color: var(--ink-2); }
.cn-key-colour { display: grid; gap: 6px; }
.cn-key-colour b { font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.cn-ramp { display: block; height: 8px; border-radius: 999px; }
.cn-ramp-ticks { display: flex; justify-content: space-between; gap: 8px; font-size: .74rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.cn-key-colour small { color: var(--muted); font-size: .74rem; line-height: 1.45; }
.cn-keys { display: grid; gap: 8px; }
.cn-key-art { width: 54px; height: 20px; flex: 0 0 54px; }
.cn-caption { margin: 0; color: var(--muted); font-size: .8rem; line-height: 1.55; max-width: 84ch; }
.cn-note { margin: 0; }
.cn-table .table-scroll { display: grid; gap: 14px; }
.cn-table td, .cn-table th { white-space: nowrap; font-variant-numeric: tabular-nums; }
.cn-table .text-link { display: inline; font-size: .8rem; background: none; border: 0; padding: 0; color: #b9d392; cursor: pointer; }
.cn-swatch { display: inline-block; width: 12px; height: 4px; border-radius: 2px; margin-right: 8px; vertical-align: middle; }
.cn-row-low td { color: var(--muted); }

@media (max-width: 760px) {
  .cn-stage { height: 380px; border-radius: 14px; }
  .cn-legend { grid-template-columns: 1fr; }
  .cn-toolbar { top: 8px; right: 8px; gap: 4px; }
  .cn-tool { height: 30px; min-width: 30px; padding: 0 9px; }
  .cn-label { font-size: 10.5px; padding: 1px 6px 2px; }
}
@media (prefers-reduced-motion: reduce) { .cn-label, .cn-tip { transition: none; } }
@media (forced-colors: active) { .cn-stage { border-color: CanvasText; } .cn-label { background: Canvas; color: CanvasText; } }