:root{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#0f172a}*{box-sizing:border-box}body{margin:0;min-height:100vh}.app{max-width:640px;margin:0 auto;padding:3rem 1.5rem}header h1{font-size:2.5rem;font-weight:800;margin:0 0 .5rem;letter-spacing:-.02em}.info{color:#94a3b8;font-size:.875rem;font-family:ui-monospace,monospace;margin:0 0 2rem}.add-form{display:flex;gap:.5rem;margin-bottom:1.5rem}.add-form input{flex:1;padding:.75rem 1rem;border-radius:8px;border:1px solid #334155;background:#1e293b;color:#fff;font-size:1rem}.add-form input:focus{outline:none;border-color:#3b82f6}.add-form button{padding:.75rem 1.5rem;border-radius:8px;border:none;background:#3b82f6;color:#fff;font-weight:600;cursor:pointer}.add-form button:hover{background:#2563eb}.add-form button:disabled{opacity:.5;cursor:not-allowed}ul{list-style:none;padding:0;margin:0}li{padding:.75rem 1rem;background:#1e293b;border-radius:8px;margin-bottom:.5rem;font-family:ui-monospace,monospace;font-size:.875rem}.empty{text-align:center;color:#64748b;padding:2rem}