:root{--ink:#233b39;--muted:#647773;--paper:#f8f6ef;--green:#22665b;--line:#dbe3da;--accent:#f5d576}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}header{display:flex;align-items:center;gap:18px;padding:18px 4vw;background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;margin-right:auto}.brand b{font-size:24px;letter-spacing:3px}.brand small{display:block;color:var(--muted);font-size:12px}.logo{font-size:45px;color:var(--green)}.author{font-size:13px;color:var(--muted)}button,.button,select,input,textarea{font:inherit}button,.button{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);border-radius:10px;padding:10px 14px;min-height:44px;transition:background .15s}button:hover,.button:hover{background:#edf3ed}button:disabled{opacity:.45;cursor:default}button.primary,button.active,nav button.active{background:var(--green);border-color:var(--green);color:white}.danger{color:#a3362b}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:3px solid #d89625;outline-offset:3px}nav{display:flex;gap:8px;padding:16px 4vw;overflow:auto;white-space:nowrap}nav button{border:0;background:transparent}main{max-width:1600px;margin:auto;padding:12px 4vw 35px}.heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}h1{font:500 clamp(27px,3vw,40px)/1.2 Georgia,serif;margin:6px 0 10px}p{margin:8px 0}.eyebrow{letter-spacing:2px;font-size:11px;font-weight:700;color:var(--green)}#subtitle{color:var(--muted);font-size:15px}.pill{background:#f2e6be;padding:10px 18px;border-radius:30px;white-space:nowrap;font-size:14px}.studio{display:grid;grid-template-columns:230px minmax(0,1fr);gap:22px}aside{background:#fff;border:1px solid var(--line);padding:20px;border-radius:18px}h2{font-size:16px;margin:0 0 15px}aside button{width:100%;margin:4px 0}label{display:block;font-size:13px;margin:10px 0;color:var(--muted)}select,input:not([type=checkbox]),textarea{display:block;width:100%;margin-top:5px;border:1px solid var(--line);padding:9px;border-radius:8px;background:#fff;color:var(--ink)}input[type=color]{height:45px;padding:3px}input[type=range]{padding:0;accent-color:var(--green)}.check{display:flex;align-items:center;gap:7px;color:var(--ink)}input[type=checkbox]{width:18px;height:18px;accent-color:var(--green)}.pair{display:flex;gap:5px}.pair button{padding:9px 4px}hr{border:0;border-top:1px solid var(--line);margin:20px 0}.boardWrap{min-width:0}.boardHeader{display:flex;justify-content:space-between;gap:10px;padding:10px 5px;font-size:11px;letter-spacing:1px}#status{letter-spacing:0;text-align:right;color:var(--green);font-size:12px}canvas{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:18px;touch-action:none;background:#e9f0e8}.measure{display:flex;justify-content:space-around;gap:10px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;margin-top:12px;font-size:13px}.measure b{margin-left:9px;font-size:18px}.under,.note{font-size:12px;color:var(--muted);margin:12px 5px}.swatches{display:flex;flex-wrap:wrap;gap:6px}.swatches button{width:27px;min-height:27px;height:27px;border-radius:50%;padding:0;margin:0;border:2px solid #fff;box-shadow:0 0 0 1px #ccc}#paintInfo{font-size:13px}.galleryBar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:20px 0}.galleryBar label{margin:0}#cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px}.card img{width:100%;border-radius:8px}.card p{font-size:13px}.card button{margin:3px}footer{padding:20px 4vw;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}a{color:var(--green)}dialog{max-width:680px;width:90%;border:1px solid var(--line);border-radius:18px;padding:28px;color:var(--ink)}dialog::backdrop{background:#173c3866}.close{float:right}li{margin-bottom:12px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:14px 22px;border-radius:12px;max-width:90%;display:none;z-index:20}[hidden]{display:none!important}.legal{max-width:850px;background:white;padding:40px;margin:30px auto;border-radius:15px}.legal h2{margin-top:26px}@media(max-width:900px){.author{display:none}.studio{grid-template-columns:180px minmax(0,1fr)}aside{padding:12px}main{padding:10px 2vw}.heading{align-items:start}.pill{font-size:12px;padding:8px}.boardHeader{display:block}#status{display:block;text-align:left}.measure{font-size:11px}.measure b{font-size:15px}}@media(max-width:620px){header{padding:10px}.brand b{font-size:20px}.brand small{font-size:10px}.studio{display:flex;flex-direction:column-reverse}.heading{display:block}.pill{display:inline-block;margin-top:5px}aside{padding:15px}aside>div{display:flex;gap:8px;flex-wrap:wrap;align-items:center}aside button{width:auto}aside h2,aside p{width:100%}aside label{max-width:200px}.pair{display:inline-flex}.boardHeader{font-size:10px}nav{padding:8px}nav button{padding:8px;font-size:13px}.legal{padding:20px;margin:10px}.measure{padding:10px}}@media print{header,nav,aside,footer,.heading,.boardHeader,.under,#gallery,dialog,#toast{display:none!important}main{padding:0}.studio{display:block}canvas{border:0;max-height:85vh;object-fit:contain}.measure{border:0}body{background:white}}

/* v1.3: use the viewport, keeping Euclidean shapes at a uniform scale. */
body:has(#workspace){height:100dvh;display:flex;flex-direction:column;overflow:hidden}
body:has(#workspace) header{padding:7px 16px;gap:12px;flex:none}
body:has(#workspace) .logo{font-size:32px}
body:has(#workspace) .brand b{font-size:21px}
body:has(#workspace) nav{padding:5px 16px;flex:none}
body:has(#workspace) main{max-width:none;width:100%;margin:0;padding:4px 16px 6px;flex:1;min-height:0;overflow:auto}
#workspace{height:100%;display:flex;flex-direction:column;min-height:0}
.heading{margin-bottom:8px;flex:none}.heading .eyebrow{display:none}
.heading h1{font-size:clamp(23px,2vw,30px);margin:0 0 3px}
.heading #subtitle{margin:0;font-size:13px}
.studio{flex:1;min-height:0;grid-template-columns:220px minmax(0,1fr);gap:12px}
.studio aside{min-height:0;overflow:auto;padding:12px;border-radius:12px}
.studio aside button{padding:7px 10px;margin:3px 0}.studio h2{margin-bottom:8px}
.boardWrap{min-height:0;display:flex;flex-direction:column}
.boardHeader{padding:4px 5px;flex:none}
#board{width:100%;height:100%;min-height:0;flex:1;object-fit:contain;border-radius:12px}
.measure{flex:none;padding:7px 10px;margin-top:6px}.under{flex:none;margin:5px;font-size:11px}
body:has(#workspace) footer{padding:5px 16px;flex:none;font-size:11px}
@media(max-width:900px){.studio{grid-template-columns:175px minmax(0,1fr)}.boardHeader{font-size:10px}#status{font-size:11px}}
@media(max-width:620px){body:has(#workspace){height:auto;min-height:100dvh;overflow:auto}body:has(#workspace) main{overflow:visible;padding:6px}#workspace{height:auto}.studio{display:flex;min-height:auto}.studio aside{overflow:visible}.boardWrap{min-height:0}#board{flex:none;height:auto;aspect-ratio:1100/680}.heading #subtitle{font-size:12px}.heading .pill{padding:4px 10px}.under{font-size:10px}}
@media print{body:has(#workspace){height:auto;overflow:visible}#board{height:auto;flex:none}.studio aside{display:none}}

/* v1.4: bitmap and hit testing fill the viewport, without inert letterbox bands. */
#board{object-fit:fill;flex-basis:0;min-width:0}
@media(max-width:620px){#board{flex-basis:auto}}