:root{--bg: #0b0b0f;--bg-2: #15151c;--fg: #f4f4f6;--fg-dim: #a0a0ae;--line: #2a2a36;--accent-detect: rgba(255, 255, 255, .55);--accent-target: #00b7c2;--accent-match: #e5247a;--accent-uncertain: #f5a524;--radius: 14px;--shadow: 0 6px 24px rgba(0, 0, 0, .35);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);min-height:100vh}.topbar{display:flex;align-items:baseline;gap:12px;padding:18px 24px;border-bottom:1px solid var(--line)}.topbar h1{margin:0;font-size:20px;font-weight:600;letter-spacing:-.01em}.tag{color:var(--fg-dim);font-size:12px;text-transform:uppercase;letter-spacing:.05em}.app{padding:24px;max-width:1200px;margin:0 auto}.dropzone{border:2px dashed var(--line);border-radius:var(--radius);padding:64px 24px;text-align:center;transition:border-color .15s ease,background .15s ease;cursor:pointer}.dropzone.dragover{border-color:var(--accent-target);background:#00b7c20f}.dropzone-label{display:flex;flex-direction:column;gap:6px;cursor:pointer}.dropzone-label strong{font-size:18px;font-weight:600}.dropzone-label span{color:var(--fg-dim);font-size:14px}.stage{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:24px;align-items:start}@media(max-width:720px){.stage{grid-template-columns:1fr}}.canvas-wrap{background:var(--bg-2);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative}#canvas{display:block;width:100%;height:auto;cursor:crosshair;touch-action:manipulation}.sidebar{display:flex;flex-direction:column;gap:16px}.status{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;font-size:14px;line-height:1.45;min-height:48px}.status.error{border-color:#c0392b;color:#ff8a80}.legend{display:flex;flex-direction:column;gap:8px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;font-size:13px;color:var(--fg-dim)}.swatch{display:inline-block;width:14px;height:14px;border-radius:4px;margin-right:8px;vertical-align:middle}.swatch.detected{background:#fff8}.swatch.target{background:var(--accent-target)}.swatch.match{background:var(--accent-match)}.match-info{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;font-size:14px}.match-info .row{display:flex;justify-content:space-between;margin:4px 0}.match-info .row span:last-child{font-variant-numeric:tabular-nums}.match-info.uncertain{border-color:var(--accent-uncertain)}.btn-secondary{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-2);color:var(--fg);border:1px solid var(--line);border-radius:10px;padding:10px 14px;font-size:14px;cursor:pointer;transition:border-color .15s ease}.btn-secondary:hover{border-color:var(--accent-target)}.help{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;font-size:13px;color:var(--fg-dim);line-height:1.5}.help summary{cursor:pointer;color:var(--fg);font-weight:500}.help p{margin:8px 0 0}.progress{display:block;margin-top:8px;height:6px;background:var(--line);border-radius:4px;overflow:hidden}.progress>span{display:block;height:100%;background:var(--accent-target);transition:width .2s ease}