:root{color-scheme:light;--paper: #f6f1e8;--panel: #fffaf0;--ink: #202522;--muted: #68716b;--line: #ddd1ba;--blue: #0b789a;--blue-dark: #07586f;--shadow: 0 18px 48px rgba(41, 35, 25, .16);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0;background:linear-gradient(135deg,rgba(0,119,168,.13),transparent 34%),linear-gradient(315deg,rgba(210,155,67,.14),transparent 30%),var(--paper);color:var(--ink)}button,input,summary{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-rows:auto minmax(0,1fr);gap:16px;padding:18px}.topbar,.workspace{border:1px solid rgba(221,209,186,.95);background:#fffaf0e6;box-shadow:var(--shadow)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px;border-radius:8px}.kicker{margin:0 0 3px;color:var(--muted);font-size:.72rem;font-weight:800;letter-spacing:0;text-transform:uppercase}h1,h2,p{margin:0}h1{font-size:clamp(1.45rem,2vw,2rem);letter-spacing:0}.topbar-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.button,.segmented-button{min-height:42px;border:1px solid var(--line);border-radius:8px;background:#fffaf0;color:var(--ink);cursor:pointer;font-weight:800}.button{display:inline-flex;align-items:center;justify-content:center;padding:0 14px}.button.primary{border-color:transparent;background:var(--blue);color:#fff}.button:disabled{cursor:not-allowed;opacity:.48}.file-button input{inline-size:1px;block-size:1px;position:absolute;opacity:0;pointer-events:none}.workspace{min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:0;overflow:hidden;border-radius:8px}.stage{position:relative;min-height:520px;display:grid;place-items:center;overflow:hidden;background:linear-gradient(90deg,rgba(32,37,34,.04) 1px,transparent 1px),linear-gradient(rgba(32,37,34,.04) 1px,transparent 1px),#eee5d4;background-size:28px 28px}.workspace.dragging .stage{outline:4px solid rgba(0,119,168,.22);outline-offset:-4px}canvas{display:none;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;box-shadow:0 20px 54px #1617144d}.stage.has-image canvas{display:block}.empty-state{display:grid;justify-items:center;gap:14px;max-width:420px;padding:28px;text-align:center}.empty-state h2{font-size:1.4rem}.empty-state p,.status-text{color:var(--muted);line-height:1.7}.stage.has-image .empty-state{display:none}.status-text{position:absolute;right:16px;bottom:16px;max-width:min(440px,calc(100% - 32px));padding:9px 12px;border-radius:8px;background:#202522d1;color:#fff;font-size:.9rem;font-weight:700}.controls{display:grid;align-content:start;gap:16px;padding:18px;border-left:1px solid var(--line);background:#fffaf0eb}.segmented{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:8px;overflow:hidden}.segmented-button{border:0;border-radius:0}.segmented-button.active{background:var(--blue-dark);color:#fff}.toggle{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800}.toggle input{inline-size:18px;block-size:18px;accent-color:var(--blue)}.control{display:grid;gap:8px}.control span,.advanced summary{color:var(--muted);font-size:.82rem;font-weight:800}input[type=range]{width:100%;accent-color:var(--blue)}.advanced{display:grid;gap:12px;padding-top:4px}.advanced summary{cursor:pointer}.advanced[open]{gap:14px}.advanced[open] summary{margin-bottom:8px}.unsupported .controls,.unsupported .topbar-actions{opacity:.5;pointer-events:none}@media(max-width:860px){.topbar,.workspace{grid-template-columns:1fr}.topbar{align-items:flex-start;flex-direction:column}.workspace{display:flex;flex-direction:column}.stage{min-height:420px}.controls{border-left:0;border-top:1px solid var(--line)}}