:root{--bg-color: #0f172a;--card-bg: #1e293b;--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #3b82f6;--accent-hover: #2563eb;--input-bg: #334155;--border-color: #475569;font-family:Inter,system-ui,-apple-system,sans-serif}body{margin:0;padding:0;background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center}*{box-sizing:border-box}h1,h2,h3,p{margin:0}button{cursor:pointer;font-family:inherit}.container{width:100%;max-width:1200px;padding:2rem;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}@media(max-width:768px){.container{grid-template-columns:1fr;gap:2rem}}.card{background:var(--card-bg);border-radius:1rem;padding:2rem;box-shadow:0 25px 50px -12px #00000040;border:1px solid var(--border-color)}.control-group{margin-bottom:1.5rem}.control-group label{display:block;color:var(--text-secondary);margin-bottom:.5rem;font-size:.875rem;font-weight:500}.input-field{width:100%;padding:.75rem 1rem;background:var(--input-bg);border:1px solid var(--border-color);border-radius:.5rem;color:var(--text-primary);font-size:1rem;transition:border-color .2s}.input-field:focus{outline:none;border-color:var(--accent-color)}.color-inputs{display:flex;gap:1rem}.color-picker-wrapper{flex:1;display:flex;align-items:center;gap:.5rem;background:var(--input-bg);padding:.5rem;border-radius:.5rem;border:1px solid var(--border-color)}input[type=color]{-webkit-appearance:none;border:none;width:32px;height:32px;border-radius:4px;background:none;cursor:pointer;padding:0}input[type=color]::-webkit-color-swatch-wrapper{padding:0}input[type=color]::-webkit-color-swatch{border:none;border-radius:4px}.btn{width:100%;padding:1rem;background:linear-gradient(135deg,var(--accent-color),var(--accent-hover));color:#fff;border:none;border-radius:.5rem;font-weight:600;font-size:1rem;transition:transform .1s,opacity .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}.btn:hover{opacity:.9}.btn:active{transform:scale(.98)}.preview-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px}.qr-wrapper{background:#fff;padding:2rem;border-radius:1rem;box-shadow:0 0 40px #3b82f61a;display:flex;justify-content:center;align-items:center}.qr-wrapper canvas{width:300px!important;height:300px!important;max-width:100%}.title{font-size:2.5rem;font-weight:800;background:linear-gradient(to right,#60a5fa,#a855f7);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:2rem;letter-spacing:-.05em}