:root{--bg-color:#0b0f19;--card-bg:#151c2e;--primary:#3b82f6;--primary-hover:#2563eb;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--text-main:#f8fafc;--text-muted:#94a3b8;--border-color:#1e293b;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);font-family:var(--font-family);flex-direction:column;min-height:100vh;display:flex}header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex}header h1{letter-spacing:-.025em;color:var(--primary);font-size:1.25rem;font-weight:700}.nav-links a{color:var(--text-muted);margin-left:1.5rem;font-size:.9rem;text-decoration:none;transition:color .2s}.nav-links a:hover,.nav-links a.active{color:var(--text-main)}main{flex:1;width:100%;max-width:900px;margin:0 auto;padding:2rem}.hero{text-align:center;margin-bottom:3rem}.hero h2{margin-bottom:.75rem;font-size:2.25rem}.hero p{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:1.1rem}.action-cards{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:3rem;display:grid}.card{background:var(--card-bg);border:1px solid var(--border-color);text-align:center;color:inherit;border-radius:12px;padding:2rem;text-decoration:none;transition:transform .2s,border-color .2s}.card:hover{border-color:var(--primary);transform:translateY(-4px)}.card .icon{margin-bottom:1rem;font-size:3rem}.card h3{margin-bottom:.5rem;font-size:1.5rem}.card p{color:var(--text-muted);font-size:.95rem}.btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;text-decoration:none;transition:background .2s;display:inline-block}.btn:hover{background:var(--primary-hover)}.btn-secondary{background:#334155}.btn-secondary:hover{background:#475569}.drop-zone{border:2px dashed var(--border-color);text-align:center;cursor:pointer;background:#0f172a;border-radius:12px;padding:3rem 1.5rem;transition:border-color .2s,background .2s}.drop-zone.dragover{border-color:var(--primary);background:#1e293b}.file-info{background:var(--card-bg);border:1px solid var(--border-color);border-radius:8px;margin:1.5rem 0;padding:1.25rem}.canvas-container{background:gray;border-radius:8px;justify-content:center;align-items:center;max-width:-moz-fit-content;max-width:fit-content;margin:1.5rem auto;padding:20px;display:flex}.canvas-container:fullscreen{background:gray;border-radius:0;justify-content:center;align-items:center;width:100vw;max-width:none;height:100vh;margin:0;display:flex}.canvas-container:fullscreen{background:gray;border-radius:0;justify-content:center;align-items:center;width:100vw;max-width:none;height:100vh;margin:0;display:flex}:-webkit-any(.canvas-container:fullscreen canvas,.canvas-container:-webkit-full-screen canvas){object-fit:contain;max-width:calc(100vw - 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