body{color:#1a1a1a;background-color:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background:linear-gradient(135deg,#e3f2fd,#bbdefb);min-height:100vh;font-family:Arial,Helvetica,sans-serif}.app{justify-content:center;align-items:center;min-height:100vh;display:flex}.app-container{width:100%;max-width:1200px;padding:20px}.btn{color:#fff;cursor:pointer;background-color:#2563eb;border:none;border-radius:8px;padding:12px 22px;font-size:16px;font-weight:600;transition:all .3s}.btn:hover{background-color:#1d4ed8;transform:translateY(-2px)}.btn:active{transform:scale(.98)}.btn:disabled{cursor:not-allowed;background-color:#9ca3af}input,select{border:1px solid #cbd5e1;border-radius:8px;outline:none;width:100%;margin:10px 0;padding:12px;font-size:15px}input:focus,select:focus{border-color:#2563eb}.card{background:#fff;border-radius:12px;padding:30px;box-shadow:0 6px 18px #0000001f}