#colour-lab{padding:0;border:0;width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;overflow:hidden;background:var(--paper);color:var(--ink)}
.lab-shell{height:100%;max-width:1600px;margin:auto;padding:0 clamp(14px,4vw,64px) 12px;display:flex;flex-direction:column}.lab-top{flex:0 0 86px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--ink)}.lab-top h2{font-size:24px;font-weight:400}.lab-top small{display:block;color:var(--muted);font-size:10px;letter-spacing:.1em;margin-top:6px}.lab-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;grid-template-rows:minmax(0,1fr) auto;flex:1;min-height:0}.lab-preview{grid-row:1/3;min-height:0;min-width:0;display:flex;flex-direction:column;padding:12px 26px 0 0}.lab-toolbar{flex:0 0 44px;display:flex;justify-content:space-between;align-items:center;font-size:11px;gap:8px}.lab-toolbar>div{display:flex;gap:6px}.lab-toolbar button{font-size:12px;padding:4px 6px}.lab-toolbar button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.lab-stage{position:relative;flex:1;min-height:0;display:flex;align-items:center;justify-content:center;background:var(--stage);overflow:hidden}.lab-stage:before{content:'';position:absolute;inset:18px;border:1px solid #c9c9c9;pointer-events:none}.lab-stage canvas{display:block;position:relative;max-width:100%;touch-action:none;box-shadow:0 16px 24px #00000019;cursor:crosshair}.lab-status{flex:0 0 34px;font-size:10px;display:flex;align-items:center;color:var(--muted);line-height:1.6}.lab-controls{min-height:0;min-width:0;overflow:auto;overscroll-behavior:contain;border-left:1px solid var(--line);padding:28px 0 8px 24px;scrollbar-width:thin}.lab-section{padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--line)}.lab-section h3{font-size:14px;font-weight:500;margin:0 0 14px}.lab-section p{font-size:11px;line-height:1.8;color:var(--muted);margin-top:12px}.lab-presets{display:grid;gap:7px}.lab-preset{display:flex;align-items:center;gap:12px;padding:8px;border:1px solid var(--line);text-align:left;width:100%;min-height:44px}.lab-preset img{width:calc(100% - 90px);height:20px;object-fit:fill}.lab-preset span{font-size:11px;white-space:nowrap}.lab-preset[aria-pressed=true]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}.lab-original-swatch{height:20px;width:calc(100% - 90px);background:linear-gradient(90deg,#111,#fff)}.lab-actions{display:flex;gap:6px;grid-column:2;padding:12px 0 0 24px;border-left:1px solid var(--line)}.lab-quiet{font-size:11px;color:var(--muted)}.lab-record{display:flex;gap:18px;flex-wrap:wrap}.lab-record button{font-size:11px;min-height:36px;text-decoration:underline;text-underline-offset:4px}.lab-presets button:disabled{opacity:.5}.lab-tools{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.lab-tools button,.lab-versions button{background:var(--panel);font-size:12px;padding:4px}.lab-tools .active,.lab-versions .active{background:var(--ink);color:var(--paper)}.lab-versions{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin-bottom:14px}.lab-brushes{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:3px;margin:12px 0}.lab-brushes button{display:flex;align-items:center;justify-content:center;min-width:0;min-height:42px;border:1px solid var(--line);padding:3px}.lab-brushes img{display:block;width:100%;max-width:26px;height:26px;background:#333;object-fit:contain;pointer-events:none}.lab-brushes button.active{background:var(--ink);border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);color:var(--paper)}.lab-colors{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;margin:12px 0}.lab-colors button{display:grid;place-items:center;padding:4px;min-height:32px;border:1px solid transparent}.lab-colors i{display:block;background:var(--swatch);width:23px;height:23px;border-radius:50%;box-shadow:inset 0 0 0 1px #0002}.lab-colors .active{border-color:var(--ink)}.lab-controls .slider-row{grid-template-columns:4em minmax(0,1fr) 4ch;font-size:12px;gap:9px}.lab-chem-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;border:1px solid var(--ink);padding:10px;font-size:13px}.lab-controls[aria-busy=true]{opacity:.6;pointer-events:none}#lab-export-dialog img{display:block;max-width:100%;max-height:65dvh;margin:auto}#lab-export-dialog{z-index:10}#lab-export-dialog p{font-size:12px;line-height:1.8}
@media(max-width:900px){.lab-top{flex-basis:66px}.lab-top h2{font-size:20px}.lab-top small{font-size:9px}.lab-grid{display:flex;flex-direction:column}.lab-preview{flex:0 0 auto;padding:4px 0 0}.lab-stage{flex:none;height:clamp(200px,42dvh,440px)}.lab-status{flex-basis:30px}.lab-controls{flex:1;border-left:0;border-top:1px solid var(--line);padding:14px 0}.lab-presets{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}.lab-preset{gap:6px;padding:6px}.lab-preset img,.lab-original-swatch{width:calc(100% - 58px)}.lab-preset span{font-size:10px}.lab-actions{flex:0 0 auto;border:0;padding:8px 0 0}.lab-section{padding-bottom:14px;margin-bottom:14px}.lab-toolbar button{font-size:11px}.lab-stage:before{inset:10px}.lab-toolbar{flex-basis:40px}.lab-controls .slider-row{min-height:40px}}
@media(max-height:650px) and (max-width:900px){.lab-top{flex-basis:52px}.lab-stage{height:180px}.lab-top small{display:none}}

.lab-order{display:grid;grid-template-columns:1fr 1fr;gap:6px}.lab-order button{padding:8px 3px;border:1px solid var(--line);font-size:11px;min-height:40px;white-space:nowrap}.lab-order button[aria-pressed=true]{color:var(--paper);background:var(--ink);border-color:var(--ink)}.lab-order-section h3{margin-bottom:10px}.lab-order-section p{min-height:2.8em;margin-bottom:0}

.lab-brushes button[data-brush="square"]{position:relative}
.lab-brushes button[data-brush="square"]::before{content:"";position:absolute;width:26px;height:26px;background:#333;pointer-events:none}
.lab-brushes button[data-brush="square"] img{position:relative;z-index:1;background:transparent;transform:scale(.2);transform-origin:center}

/* Colour swatches keep the image visible; each preset remembers its tonal distribution. */
.lab-presets{grid-template-columns:minmax(0,1fr)}
.lab-preset-row{display:grid;grid-template-columns:minmax(0,1fr) 116px;gap:12px;align-items:center}
.lab-preset-row:first-child .lab-preset{grid-column:1/-1}
.lab-preset-row .lab-preset{min-width:0;padding:7px;min-height:38px}
.lab-preset-row .lab-preset img{width:100%;height:22px}
.lab-preset-row .lab-original-swatch{flex:1;width:auto}
.lab-distribution{display:grid;grid-template-columns:minmax(0,1fr) 32px;gap:6px;align-items:center;min-width:0;font-size:10px;color:var(--muted)}
.lab-distribution output{text-align:right;font-variant-numeric:tabular-nums}
.lab-distribution input{appearance:none;-webkit-appearance:none;width:100%;min-width:0;height:36px;margin:0;background:transparent;cursor:ew-resize;touch-action:pan-y}
.lab-distribution input::-webkit-slider-runnable-track{height:2px;background:#bdbdbd}
.lab-distribution input::-webkit-slider-thumb{appearance:none;width:8px;height:16px;background:var(--ink);border:0;border-radius:0;margin-top:-7px}
.lab-distribution input::-moz-range-track{height:2px;background:#bdbdbd}
.lab-distribution input::-moz-range-thumb{width:8px;height:16px;background:var(--ink);border:0;border-radius:0}
.lab-preset-row.selected .lab-distribution{color:var(--ink)}
.lab-controls[aria-busy=true] .lab-distribution{pointer-events:auto}

.lab-controls[aria-busy=true][data-adjusting=true]{opacity:1}

.lab-toner-heading{display:grid;grid-template-columns:minmax(0,1fr) 116px;gap:12px;align-items:center;margin-bottom:14px}.lab-toner-heading h3{margin:0}.lab-toner-heading span{font-size:10px;color:var(--muted);text-align:right}

.lab-top{gap:20px}
.lab-brand{display:flex;align-items:center;gap:22px;min-width:0}
.lab-brand .brand-logo{display:block;flex:none;width:160px;height:auto;max-height:64px}
.lab-brand h2{font-size:20px;white-space:nowrap}
#lab-close{flex:none;white-space:nowrap}
@media(max-width:900px){.lab-top{gap:12px}.lab-brand{gap:14px}.lab-brand .brand-logo{width:128px;max-height:51px}.lab-brand h2{font-size:16px}}
@media(max-width:420px){.lab-top{gap:10px}.lab-brand{gap:10px}.lab-brand .brand-logo{width:100px;max-height:40px}.lab-brand h2{font-size:15px}}
@media(max-height:650px) and (max-width:900px){.lab-brand .brand-logo{width:100px;max-height:40px}}

/* Match the darkroom's header and editing controls. */
.lab-shell{padding:var(--top) clamp(20px,4vw,64px) max(12px,var(--bottom))}
.lab-top.topbar{flex:0 0 clamp(64px,12vh,112px);gap:20px}
.lab-brand.brand{gap:16px}
.lab-brand.brand .brand-logo{width:160px;max-height:72px}
.lab-top-actions.top-actions{gap:28px}
.lab-top-actions .edition{font-size:13px;letter-spacing:.08em;color:var(--muted);white-space:nowrap}
.lab-top-actions .text-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;font-size:13px;font-weight:400;line-height:1.3;text-decoration:underline;text-underline-offset:5px;padding:4px 0;white-space:nowrap}
.lab-grid{grid-template-columns:minmax(0,1fr) 352px}
.lab-preview{padding:16px 28px 0 0}
.lab-toolbar.preview-head{flex:0 0 44px;font-size:12px;color:var(--muted)}
.lab-toolbar .history-actions{display:flex;align-items:center;gap:6px}
.lab-toolbar #lab-undo,.lab-toolbar #lab-redo{width:auto;min-width:44px;padding:4px 6px;font-size:13px;line-height:1.3;white-space:nowrap}
.lab-toolbar .text-button{font-size:13px;text-decoration:underline;text-underline-offset:5px;padding:4px 0;margin-left:8px}
.lab-toolbar #lab-compare[aria-pressed=true]{background:transparent;color:var(--ink);text-decoration-thickness:2px}
.lab-controls{padding:32px 0 20px 26px}
.lab-section h3{font-size:15px;font-weight:500;margin-bottom:16px}
.lab-toner-heading h3{margin-bottom:0}
.lab-order button{background:var(--panel);border-color:transparent;font-size:13px;min-height:44px}
.lab-order button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.lab-preset-row .lab-preset{min-height:44px}
.lab-tools button,.lab-versions button{min-height:44px;font-size:13px;padding:10px 4px}
.lab-chem-toggle{min-height:44px;font-size:13px}
.lab-record button{min-height:44px;font-size:13px}
.lab-controls .slider-row{grid-template-columns:4em minmax(0,1fr) 5ch;gap:12px;min-height:40px;font-size:13px}
.lab-controls .slider-row output{font-size:12px}
.lab-distribution input{height:38px}
.lab-distribution input::-webkit-slider-thumb{width:11px;height:20px;margin-top:-9px}
.lab-distribution input::-moz-range-thumb{width:11px;height:20px}
.lab-actions{padding-left:26px}

@media(max-width:900px){
 .lab-shell{padding:calc(var(--top) + var(--native-toolbar,0px)) max(12px,env(safe-area-inset-right,0px)) max(12px,var(--bottom)) max(12px,env(safe-area-inset-left,0px))}
 .lab-top.topbar{flex-basis:64px;gap:12px}
 .lab-brand.brand .brand-logo{width:128px;max-height:51px}
 .lab-top-actions.top-actions{gap:12px}
 .lab-top-actions .edition{display:none}
 .lab-preview{padding:4px 0 0}
 .lab-toolbar.preview-head{flex-basis:38px}
 .lab-controls{padding:14px 0 16px}
 .lab-actions{padding:8px 0 0}
}
@media(max-width:500px){
 .lab-brand.brand .brand-logo{width:94px;max-height:38px}
 .lab-top-actions.top-actions{gap:8px}
 .lab-toolbar #lab-undo,.lab-toolbar #lab-redo{padding:4px 6px}
 .lab-toolbar .text-button{font-size:11px;margin-left:3px}
}
@media(max-width:360px){.lab-top.topbar{gap:6px}.lab-brand.brand .brand-logo{width:82px}.lab-top-actions.top-actions{gap:6px}.lab-top-actions .text-button{font-size:12px}}
@media(max-width:900px) and (max-height:650px){.lab-top.topbar{flex-basis:52px}.lab-brand.brand .brand-logo{width:105px;max-height:42px}}

/* Separate the chemistry introduction from the mode selector. */
#lab-chemical>p:first-child{margin-bottom:3px}

.lab-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:6px;gap:6px}
#lab-close{border:0;outline:none;box-shadow:none}
.lab-top-actions .text-button,
.lab-top-actions .text-button:focus {
  text-decoration-style: solid;
  text-decoration-thickness: 1px;
}
.lab-top-actions .text-button:focus {
  outline: none;
  box-shadow: none;
}
#web-share-url{display:block;width:100%;min-width:0;min-height:44px;margin:12px 0;padding:8px;border:1px solid var(--line);font:inherit;font-size:12px;background:transparent;color:inherit}
#web-share-dialog p{font-size:12px;line-height:1.8;margin:12px 0}