*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f0f2f5;color:#1a1a2e;min-height:100vh}a{color:inherit;text-decoration:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:opacity .15s,transform .1s;white-space:nowrap}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:#4f46e5;color:#fff}.btn-primary:hover:not(:disabled){background:#4338ca}.btn-danger{background:#ef4444;color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-ghost{background:transparent;color:#4f46e5;border:1px solid #4f46e5}.btn-ghost:hover:not(:disabled){background:#eef2ff}.btn-full{width:100%}.card{background:#fff;border-radius:12px;box-shadow:0 1px 4px #00000014;padding:24px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:6px}.form-group input{width:100%;padding:10px 12px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;outline:none;transition:border-color .15s}.form-group input:focus{border-color:#4f46e5}.error-msg{color:#ef4444;font-size:13px;margin-top:8px}.success-msg{color:#10b981;font-size:13px;margin-top:8px}