:root{--bg: #0f172a;--surface: #1e293b;--surface-hover: #334155;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--primary: #6366f1;--primary-hover: #818cf8;--radius: 12px;color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--bg);color:var(--text)}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1.5rem 1rem 2rem;gap:1.25rem;max-width:900px;margin:0 auto}.header{text-align:center}.header h1{font-size:2rem;font-weight:700;letter-spacing:-.03em;background:linear-gradient(135deg,#818cf8,#c084fc,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:var(--text-muted);font-size:.9rem;margin-top:.25rem}.template-selector{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;width:100%}.template-thumb{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:.5rem;border-radius:var(--radius);border:2px solid transparent;background:var(--surface);cursor:pointer;transition:all .15s;color:var(--text-muted);font-size:.75rem;font-weight:500;min-width:80px}.template-thumb:hover{background:var(--surface-hover)}.template-thumb.active{border-color:var(--primary);color:var(--text);background:var(--surface-hover)}.template-preview{width:56px;height:56px;border-radius:8px;overflow:hidden;background:#fff}.canvas-area{width:100%;display:flex;justify-content:center}.canvas-card{width:100%;max-width:500px;aspect-ratio:1;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 32px #0000004d}.canvas-card svg{display:block;width:100%;height:100%}.controls{width:100%;max-width:500px;display:flex;flex-direction:column;gap:1rem}.palette{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;padding:.75rem;background:var(--surface);border-radius:var(--radius)}.swatch{width:32px;height:32px;border-radius:8px;border:2px solid var(--border);cursor:pointer;transition:all .15s;position:relative}.swatch:hover{transform:scale(1.15)}.swatch.active{border-color:var(--text);box-shadow:0 0 0 2px var(--primary);transform:scale(1.15)}.custom-picker{display:flex;align-items:center;justify-content:center;background:var(--surface-hover)!important;font-size:1.1rem;font-weight:700;color:var(--text-muted);overflow:hidden}.custom-picker input[type=color]{position:absolute;width:100%;height:100%;opacity:0;cursor:pointer}.toolbar{display:flex;gap:.5rem;justify-content:center}.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem 1rem;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.85rem;font-weight:500;cursor:pointer;transition:all .15s}.btn:hover:not(:disabled){background:var(--surface-hover)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn.primary{background:var(--primary);border-color:var(--primary)}.btn.primary:hover{background:var(--primary-hover)}@media(max-width:540px){.app{padding:1rem .75rem 1.5rem}.header h1{font-size:1.5rem}.canvas-card{max-width:100%}.swatch{width:28px;height:28px}.template-thumb{min-width:64px;padding:.35rem}.template-preview{width:44px;height:44px}}