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/* Keep working labels legible at every viewport and respect enlarged text. */
:root{--muted:#63705d}
.tone-button small,.ingredient-name small,.palette-option small,.paint-codes,.english,.range-name,.color-inputs label,.color-area strong{font-size:max(.75rem,12px)}
.palette-info>span,.palette-panel>.panel-heading .text-button,.reference-footer p,.reference-footer .text-button,.recipe-manual,.recipe-actions button,.outline-toggle,.text-button,summary{font-size:.875rem}
.brand small{font-size:10px}
.panel-heading{flex-wrap:wrap}.panel-heading>*{min-width:0}.recipe .panel-heading h2{flex:1}
.palette-option>span:last-child{min-width:0;overflow-wrap:anywhere}.compare-color{min-width:0}.compare-color strong{overflow-wrap:anywhere}
@media(max-width:680px){.palette-panel>.panel-heading,.reference-panel>.panel-heading{flex-wrap:wrap}.palette-art{display:block;height:90px;margin:13px -18px 9px}.palette-art img{object-position:center 80%}.art-note{font-size:.75rem;top:8px}.tone-button small{overflow-wrap:anywhere}.nav-link{font-size:.875rem}nav{flex-wrap:wrap}.topbar{height:auto}.color-inputs{grid-template-columns:repeat(3,1fr)}.color-inputs label:first-child{grid-column:1/-1}}
.brand-icon{width:2.875rem;height:2.875rem;line-height:1;flex-shrink:0}
.close-button{width:2.2rem;height:2.2rem;line-height:1;padding:0}
.comparison{height:6.6rem}.color-map{height:12.8rem;min-height:205px}
/* v3: only the requested wheel view and image contrast controls. */
.wheel-stage{height:490px;min-height:360px;display:flex;align-items:center;justify-content:center;background:var(--paper);padding:24px}
#studio-color-wheel{width:min(100%,420px);max-height:100%;height:auto;aspect-ratio:1;touch-action:none;cursor:crosshair;border-radius:50%}
.contrast-control{display:flex;align-items:center;gap:13px;padding:10px 23px;border-top:1px solid var(--line);background:#fdfdfb;flex-wrap:wrap}
.contrast-control label{font-size:.875rem;white-space:nowrap}.contrast-control label span{font-size:.75rem;color:var(--muted);margin-inline-start:4px}
.contrast-control input{flex:1;min-width:90px;width:auto;margin:0}.contrast-control output{font-size:.8rem;min-width:42px;text-align:center}.contrast-control .text-button{font-size:.8rem}
.reference-toolbar>.segmented{flex-wrap:wrap}.segmented button{min-width:0}
@media(min-width:1450px){.wheel-stage{height:550px}}
@media(max-width:1150px){.wheel-stage{height:470px}}
@media(max-width:850px){.wheel-stage{height:430px}}
@media(max-width:680px){.wheel-stage{height:370px;min-height:300px;padding:20px}.contrast-control{padding:10px 13px;gap:10px}.contrast-control label{width:100%}.reference-toolbar .segmented button{flex:1 0 auto}}
@media print{.wheel-stage,.contrast-control{display:none!important}}

/* v4: functional notebook controls follow the approved palette and typography. */
.notebook-open{display:block;width:100%;margin-top:12px;background:transparent;color:inherit;border:1px solid #718777;border-radius:5px;padding:10px;font:inherit;cursor:pointer}
.notebook-fields{display:grid;grid-template-columns:1fr 1fr;gap:15px}.notebook-fields>div{min-width:0}
#notebook-form>input,#notebook-form textarea{width:100%}#notebook-form textarea{font:inherit;padding:10px;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:inherit;resize:vertical}
#notebook-form input:not([type=checkbox]){width:100%;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);padding:10px;min-height:42px}.notebook-ingredient input{padding:8px!important}
.notebook-ingredient{display:grid;grid-template-columns:minmax(0,1fr) 100px 28px;align-items:center;gap:8px;margin:10px 0}.notebook-ingredient select{min-width:0}.notebook-ingredient label{display:flex;align-items:center;gap:5px;font-size:.8rem}.notebook-ingredient input{width:70px;min-width:0}
.notebook-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}.notebook-tools .primary-button{width:auto}
.notebook-list{max-height:300px;overflow:auto}.notebook-sample{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.notebook-sample small{display:block;color:var(--muted)}.notebook-sample p{font-size:.8rem;overflow-wrap:anywhere}.notebook-sample>div:last-child{display:flex;flex-direction:column;gap:12px}
#notebook-dialog hr{border:0;border-top:1px solid var(--line);margin:22px 0}#notebook-dialog .check-row{margin-top:15px}.recipe-tip{overflow-wrap:anywhere}
@media(max-width:680px){.notebook-fields{grid-template-columns:1fr}.notebook-ingredient{grid-template-columns:minmax(0,1fr) 90px 24px}.notebook-ingredient input{width:60px}.notebook-sample{grid-template-columns:25px minmax(0,1fr)}.notebook-sample>div:last-child{grid-column:2;flex-direction:row}}
@media print{.notebook-open{display:none!important}}
/* v5: requested simplification, proportional color strips, and reference zoom. */
.studio-layout{margin-top:26px}.topbar nav{margin-inline-start:auto;width:auto}.brand small{font-size:.82rem;letter-spacing:2px}
.ingredient{display:block;padding:12px 0}.ingredient-list{margin-top:17px}.ingredient-track{position:relative;min-height:44px;background:#ffffff0a;border-radius:6px;isolation:isolate;direction:ltr;overflow:hidden;display:flex;align-items:center}
.ingredient-fill{position:absolute;left:0;top:0;bottom:0;z-index:-1}.ingredient-track strong{padding:10px 12px;font:600 .9rem/1.4 'Segoe UI',Arial,sans-serif;color:#fff;text-shadow:0 1px 3px #000,0 0 3px #000,0 0 6px #000;overflow-wrap:anywhere}
.ingredient-secondary{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-top:7px}.ingredient-secondary small{font-size:.78rem;color:#b9c9ab}.ingredient-secondary>span{font-size:.83rem;color:#ecf1e4}
.zoom-controls{display:flex;align-items:center;justify-content:center;gap:12px;padding:9px 18px;border-top:1px solid var(--line);background:#fdfdfb;direction:ltr}.zoom-step{width:38px;min-height:34px;padding:3px;font-size:1.2rem}.zoom-controls output{min-width:50px;text-align:center;font-size:.85rem;font-variant-numeric:tabular-nums}.zoom-controls .text-button{margin-inline-start:8px}
#reference-stage{touch-action:none;user-select:none}#image-canvas{transform-origin:center;flex-shrink:0;will-change:transform}#reference-stage.is-zoomed{cursor:grab}#reference-stage.is-zoomed #image-canvas{cursor:grab}#reference-stage.is-panning,#reference-stage.is-panning #image-canvas{cursor:grabbing}.image-message{font-size:.85rem;padding:12px 20px;color:var(--muted)}
.wheel-stage{height:auto;min-height:490px;flex-direction:column;gap:5px;background:radial-gradient(ellipse at 50% 40%,#ffffff 0%,#f6f6ef 75%);padding:18px 24px 25px}
#studio-color-wheel{width:min(100%,420px);height:auto;max-height:none;filter:drop-shadow(0 5px 12px #263d3008)}
.wheel-readout{display:flex;align-items:center;gap:11px;padding:8px 15px;border:1px solid var(--line);border-radius:30px;background:#fff;box-shadow:0 3px 12px #263d3007;direction:ltr}.wheel-readout i{display:block;width:25px;height:25px;border-radius:50%;border:1px solid #0002}.wheel-readout code{font-size:.82rem;color:var(--ink);letter-spacing:1px}
@media(max-width:680px){.topbar{padding:14px 5%;flex-wrap:nowrap}.topbar nav{flex-wrap:nowrap}.topbar .nav-link{white-space:nowrap;padding:10px 0}.studio-layout{margin-top:18px}.wheel-stage{min-height:340px;padding:12px 12px 22px}#studio-color-wheel{width:min(100%,340px)}.ingredient-track strong{font-size:.92rem}.zoom-controls{gap:9px;padding:8px}.brand small{font-size:.75rem}}
.reference-pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);direction:rtl;align-items:stretch;background:#eaece4}
.reference-pair #reference-stage{height:500px;min-height:0}.head-panel{min-width:0;display:flex;flex-direction:column;border-inline-start:1px solid #cdd3c7;background:#f7f8f2;overflow:hidden}
.head-heading{padding:12px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.head-heading h3{font-size:.9rem;font-weight:600}.head-heading h3 span{font-size:.75rem;font-weight:400;color:var(--muted);margin-inline-start:5px}.head-heading .text-button{font-size:.75rem}
.head-stage{min-height:220px;flex:1;position:relative;overflow:hidden;background:#eaece4}#head-canvas{display:block;width:100%;height:100%;position:absolute;inset:0;touch-action:none;cursor:grab}#head-canvas:active{cursor:grabbing}#head-status{position:absolute;inset:45% 15px auto;text-align:center;font-size:.8rem;color:var(--muted);pointer-events:none}#head-retry{position:absolute;bottom:12px;left:50%;transform:translateX(-50%)}
.head-light-controls{padding:12px 15px 0}.head-light-controls label{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;gap:10px}.head-light-controls output{font-size:.75rem;color:var(--muted)}.head-light-controls input{width:100%;margin:6px 0 10px;direction:ltr}.head-credit{padding:0 15px 10px;color:var(--muted);font-size:.65rem;direction:ltr;text-align:center}.head-credit a{text-decoration:underline}
@media(max-width:1100px){.reference-pair #reference-stage{height:460px}.head-heading{padding:10px}.head-heading h3{font-size:.8rem}.head-light-controls{padding:10px 10px 0}}
@media(max-width:680px){.reference-pair #reference-stage{height:400px}.head-stage{min-height:170px}.head-heading{padding:9px;gap:3px}.head-heading h3 span{display:block;margin:2px 0 0}.head-light-controls label{font-size:.72rem}.head-credit{font-size:.6rem;padding:0 4px 8px}.reference-pair .canvas-caption{font-size:.62rem;max-width:90%;left:6px;bottom:8px;padding:5px}}