:root{--bg: #0b1020;--bg-panel: #121a30;--bg-elevated: #1a2440;--border: #263355;--text: #e6ebf5;--text-dim: #93a0bd;--accent: #f59e0b;--accent-2: #38bdf8;--danger: #f87171;--radius: 12px;--checker-a: #222c49;--checker-b: #121a30;--overlay-bg: rgba(11, 16, 32, .7);--toast-error-bg: #3b1220;--toast-error-text: #fecdd3}:root[data-theme=light]{--bg: #f4f6fb;--bg-panel: #ffffff;--bg-elevated: #eef1f8;--border: #d5dcea;--text: #1e293b;--text-dim: #64748b;--accent: #d97706;--accent-2: #0284c7;--danger: #dc2626;--checker-a: #dde3ee;--checker-b: #f4f6fb;--overlay-bg: rgba(244, 246, 251, .75);--toast-error-bg: #fee2e2;--toast-error-text: #991b1b}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.topbar{display:flex;align-items:center;gap:14px;padding:14px 20px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:700;font-size:1.15rem;letter-spacing:.2px}.brand-mark{width:32px;height:32px;border-radius:8px}.tagline{color:var(--text-dim);font-size:.85rem}.theme-toggle{margin-left:auto;font-size:1.2rem}body,.panel,.btn,.preview,.topbar,.footer{transition:background-color .2s,border-color .2s,color .2s}.footer{margin-top:auto;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding:18px 20px;border-top:1px solid var(--border);color:var(--text-dim);font-size:.8rem}.footer-brand{color:var(--text-dim);font-weight:600;text-decoration:none}.footer-link{color:var(--accent);font-weight:600;text-decoration:none}.footer-link:hover{text-decoration:underline}.landing{max-width:720px;margin:0 auto;padding:48px 20px 64px;text-align:center}.landing h1{font-size:clamp(1.7rem,4.5vw,2.6rem);margin:0 0 12px}.lede{color:var(--text-dim);font-size:clamp(.95rem,2.5vw,1.1rem);line-height:1.55;margin:0 0 32px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--bg-panel);padding:44px 24px;cursor:pointer;transition:border-color .15s,background .15s}.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:var(--bg-elevated)}.dropzone-icon{width:56px;height:56px;color:var(--text)}.dropzone h2{margin:14px 0 4px;font-size:1.25rem}.dropzone p{margin:0 0 22px;color:var(--text-dim);font-size:.9rem}.dropzone-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{min-height:44px;padding:10px 18px;border-radius:10px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);font-size:.92rem;font-weight:600;cursor:pointer;transition:filter .12s,border-color .12s}.btn:hover:not(:disabled){filter:brightness(1.15);border-color:var(--accent-2)}.btn:disabled{opacity:.5;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent);color:#1a1206}.btn.ghost{background:transparent}.btn.small{min-height:36px;padding:6px 12px;font-size:.8rem}.icon-btn{min-width:44px;min-height:44px;border:none;background:transparent;color:var(--text-dim);font-size:1rem;cursor:pointer;border-radius:8px}.icon-btn:hover{color:var(--text);background:var(--bg-elevated)}.workspace{display:grid;grid-template-columns:300px 1fr;gap:18px;padding:18px 20px;flex:1;align-items:start}.sidebar{display:flex;flex-direction:column;gap:14px}.panel{background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.panel-title{display:flex;justify-content:space-between;align-items:baseline;font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.7px;color:var(--text-dim);margin-bottom:12px}.panel-value{color:var(--accent);text-transform:none;letter-spacing:0}.hint{margin:10px 0 0;font-size:.78rem;color:var(--text-dim)}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}.preset{display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-height:52px;padding:8px 12px;border:1px solid var(--border);background:var(--bg-elevated);border-radius:10px;cursor:pointer;text-align:left}.preset.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.preset-label{font-weight:700;font-size:.9rem;color:var(--text)}.preset-sub{font-size:.72rem;color:var(--text-dim)}.hint.warn{color:var(--accent);font-weight:600}.segmented{display:grid;grid-template-columns:repeat(6,1fr);gap:4px}.seg{min-height:44px;border:1px solid var(--border);background:var(--bg-elevated);color:var(--text);border-radius:8px;font-weight:700;cursor:pointer}.seg.active{background:var(--accent);border-color:var(--accent);color:#1a1206}.seg:disabled{opacity:.3;cursor:default}input[type=range]{width:100%;accent-color:var(--accent);min-height:44px;cursor:pointer}.check{display:flex;align-items:center;gap:10px;margin-top:10px;font-size:.9rem;cursor:pointer;min-height:44px}.check input{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}.palette{display:flex;flex-direction:column;gap:6px}.swatch-row{display:flex;align-items:center;gap:10px}.swatch-row.muted .swatch-meta{opacity:.4}.swatch-row input[type=color]{width:44px;height:44px;border:1px solid var(--border);border-radius:8px;background:none;padding:2px;cursor:pointer}.swatch-meta{display:flex;flex-direction:column;flex:1;min-width:0}.hex-input{width:88px;padding:4px 6px;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--text);font-size:.85rem;font-weight:600;font-family:Consolas,Courier New,monospace}.hex-input:hover{border-color:var(--border)}.hex-input:focus{border-color:var(--accent-2);background:var(--bg-elevated);outline:none}.swatch-stats{font-size:.72rem;color:var(--text-dim)}.export-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.preview-area{display:flex;flex-direction:column;gap:10px;min-width:0}.preview-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.mockup-chips{display:flex;gap:8px}.chip{width:32px;height:32px;border-radius:50%;border:2px solid var(--border);cursor:pointer;background:repeating-conic-gradient(#cbd5e1,#cbd5e1 25%,#f8fafc 0%,#f8fafc 50%) 0 0 / 12px 12px}.chip.active{border-color:var(--accent);box-shadow:0 0 0 3px #f59e0b4d}.chip.custom{position:relative;display:inline-flex;border-style:dashed;cursor:pointer}.chip.custom.active{border-style:solid}.chip-color-input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;width:100%;height:100%;cursor:pointer}.mockup-chips{display:flex;align-items:center;gap:8px}.toolbar-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.svg-holder.erasing{cursor:crosshair}.erase-hint{margin:0;font-size:.82rem;color:var(--accent);font-weight:600}.preview{position:relative;border:1px solid var(--border);border-radius:var(--radius);min-height:420px;height:calc(100vh - 220px);display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--bg-panel)}.preview.checker{background:repeating-conic-gradient(var(--checker-a) 0% 25%,var(--checker-b) 0% 50%) 0 0 / 24px 24px}.svg-holder,.original{max-width:92%;max-height:92%;display:flex;align-items:center;justify-content:center}.svg-holder svg{max-width:100%;max-height:calc(100vh - 260px);width:auto;height:auto;display:block;filter:drop-shadow(0 8px 24px rgba(0,0,0,.35))}.original{object-fit:contain}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:var(--overlay-bg);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:2;font-weight:600}.spinner{width:34px;height:34px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;top:16px;left:50%;transform:translate(-50%);z-index:10;display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;font-size:.9rem;font-weight:600}.toast.error{background:var(--toast-error-bg);border:1px solid var(--danger);color:var(--toast-error-text)}.toast-close{background:none;border:none;color:inherit;font-size:1.1rem;cursor:pointer;min-width:32px;min-height:32px}@media (max-width: 860px){.workspace{grid-template-columns:1fr;padding:14px}.preview{height:52vh;min-height:320px}.svg-holder svg{max-height:48vh}.tagline{display:none}}