:root { --bg: #F4F3EF; --fg: #161616; --mute: #6B6B66; --rule: #D6D5CE; --card: #FFFFFF; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --bg: #101010; --fg: #ECEBE6; --mute: #8E8E88; --rule: #2A2A28; --card: #181818; } }
:root[data-theme="dark"] { --bg: #101010; --fg: #ECEBE6; --mute: #8E8E88; --rule: #2A2A28; --card: #181818; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 14px/1.45 "Inter", system-ui, sans-serif; }
.lab-head { padding: 32px 24px 16px; max-width: 1400px; margin: 0 auto; }
.lab-kicker { font: 11px "Azeret Mono", ui-monospace, monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--mute); }
.lab-head h1 { font: 500 32px/1.1 "Inter", system-ui, sans-serif; margin: 8px 0 10px; letter-spacing: -.01em; }
.lab-intro { max-width: 760px; margin: 0 0 6px; }
.lab-insp { max-width: 760px; margin: 0 0 12px; color: var(--mute); font-size: 13px; }
.lab-top { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px 48px; align-items: start; }
.lab-top .lab-intro { max-width: 560px; font-size: 15px; }
.lab-legend { margin: 10px 0 8px; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 12px; align-content: start; }
.lab-legend dt { font: 500 10px/1.6 "Azeret Mono", ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; color: var(--fg); }
.lab-legend dd { margin: 0; color: var(--mute); line-height: 1.35; }
@media (max-width: 900px) { .lab-top { grid-template-columns: 1fr; } }
/* Sticky control bar: three groups (colourway, dials, seed) with a mono eyebrow each, all controls 28px tall, one type size. */
.lab-bar { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--rule); box-shadow: 0 1px 0 var(--rule), 0 6px 16px -12px rgba(0, 0, 0, .35); }
.lab-bar .lab-controls { max-width: 1400px; margin: 0 auto; padding: 8px 24px 10px; border: 0; gap: 0 28px; align-items: flex-end; }
.lab-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; padding: 12px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); font-size: 13px; }
.lab-grp { display: flex; flex-direction: column; gap: 4px; padding: 2px 0; }
.lab-eyebrow { font: 10px/1 "Azeret Mono", ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.lab-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.lab-bar select, .lab-bar input[type="number"], .lab-bar button { height: 28px; box-sizing: border-box; font: 12px "Azeret Mono", ui-monospace, monospace; background: var(--card); color: var(--fg); border: 1px solid var(--rule); border-radius: 0; padding: 0 9px; transition-property: background-color, border-color, scale; transition-duration: 150ms; transition-timing-function: ease-out; }
.lab-bar select { max-width: 240px; padding-right: 24px; }
.lab-bar input[type="number"] { width: 84px; }
.lab-bar button { cursor: pointer; }
@media (hover: hover) { .lab-bar button:hover { border-color: var(--fg); } }
.lab-bar button:not(:disabled):active { scale: 0.96; }
.lab-pair { display: inline-flex; }
.lab-pair button + button { margin-left: -1px; }
.lab-pair button:first-child:last-child { }
.lab-pair #lab-prev, .lab-pair #lab-next { width: 28px; padding: 0; }
.lab-dials { gap: 16px; }
.lab-dial { display: grid; grid-template-columns: 68px 96px 52px; align-items: center; gap: 6px; height: 28px; font-size: 12px; }
.lab-dial span { color: var(--fg); }
.lab-dial output { font: 10px "Azeret Mono", ui-monospace, monospace; letter-spacing: .04em; text-transform: uppercase; color: var(--mute); }
.lab-dial input[type="range"] { width: 96px; height: 28px; margin: 0; accent-color: var(--fg); background: transparent; }
.lab-bar .lab-sw { height: 28px; box-sizing: border-box; }
.lab-bar .lab-sw i { height: 26px; }
.lab-keys { margin-left: auto; align-self: flex-end; height: 28px; line-height: 28px; font: 10px/28px "Azeret Mono", ui-monospace, monospace; letter-spacing: .04em; color: var(--mute); white-space: nowrap; }
@media (max-width: 1180px) { .lab-keys { display: none; } }
@media (max-width: 720px) { .lab-bar .lab-controls { padding: 8px 16px; gap: 6px 16px; } .lab-dials { flex-wrap: wrap; gap: 4px 12px; } .lab-bar select { max-width: 170px; } }
@media (prefers-reduced-motion: reduce) { .lab-bar button { transition: none; } .lab-bar button:not(:disabled):active { scale: 1; } }
.lab-controls select, .lab-controls input, .lab-controls button, .lab-a button { font: 12px "Azeret Mono", ui-monospace, monospace; background: var(--card); color: var(--fg); border: 1px solid var(--rule); padding: 5px 8px; border-radius: 0; }
.lab-controls input { width: 90px; }
.lab-note { color: var(--mute); font-size: 12px; }
.lab-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; padding: 20px 24px 64px; max-width: 1400px; margin: 0 auto; }
.lab-fig { margin: 0; background: var(--card); border: 1px solid var(--rule); display: flex; flex-direction: column; }
.lab-fig.wide { grid-column: 1 / -1; }
.lab-art { line-height: 0; }
.lab-art svg, .lab-art canvas { width: 100%; height: auto; display: block; }
.lab-fig figcaption { padding: 10px 12px 12px; border-top: 1px solid var(--rule); }
.lab-t { font-size: 13px; } .lab-t b { font: 500 11px "Azeret Mono", ui-monospace, monospace; margin-right: 6px; color: var(--mute); }
.lab-n { color: var(--mute); font-size: 12px; margin: 4px 0 8px; }
.lab-a { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.lab-a button { padding: 3px 7px; cursor: pointer; } .lab-a button[disabled] { opacity: .35; cursor: default; }
.lab-seed { font: 11px "Azeret Mono", ui-monospace, monospace; color: var(--mute); margin-left: auto; }
.lab-err { white-space: pre-wrap; font: 11px ui-monospace, monospace; color: #c22; padding: 12px; line-height: 1.3; }
@media (max-width: 520px) { .lab-grid { grid-template-columns: 1fr; padding: 16px; } .lab-head { padding: 24px 16px 12px; } }
.lab-sw { display: inline-flex; border: 1px solid var(--rule); }
.lab-sw i { display: block; width: 18px; height: 18px; }
.lab-fig.span2 { grid-column: span 2; } .lab-fig.span3 { grid-column: span 3; }
@media (max-width: 760px) { .lab-fig.span2, .lab-fig.span3 { grid-column: 1 / -1; } }
.lab-sec { grid-column: 1 / -1; padding: 24px 0 0; border-top: 1px solid var(--rule); margin-top: 8px; }
.lab-sec h2 { font: 500 18px/1.2 "Inter", system-ui, sans-serif; margin: 0 0 4px; } .lab-sec p { margin: 0; color: var(--mute); font-size: 13px; max-width: 760px; }