/* extracted from login.php */
        html, body {
            margin: 0;
            padding: 0;
            width: 100%;
            height: 100%;
            font-family: system-ui, -apple-system, Segoe UI, Roboto, Apple SD Gothic Neo, Noto Sans KR, sans-serif;
        }
        body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            background-color: #e9e9e9;
            background-image: linear-gradient(rgba(233, 233, 233, 0.72), rgba(233, 233, 233, 0.72)), url('Info.png');
            background-position: center center;
            background-repeat: no-repeat;
            background-size: cover;
            background-attachment: fixed;
        }
        .topbar {
            position: relative;
            background: #212529;
            color: #fff;
            padding: 14px 20px;
            box-shadow: 0 1px 0 rgba(0,0,0,.12);
            box-sizing: border-box;
        }
        .topbar-inner {
            display: flex;
            align-items: flex-start;
            justify-content: flex-start;
            gap: 20px;
        }
        .topbar-title {
            font-weight: 700;
            font-size: 20px;
            line-height: 1.35;
            padding-top: 2px;
        }
        .login-qr-panel {
            position: absolute;
            top: 12px;
            right: 20px;
            z-index: 20;
            display: flex;
            flex-direction: column;
            align-items: center;
            width: 188px;
            padding: 10px 10px 8px;
            border-radius: 12px;
            background: rgba(53, 58, 64, .95);
            border: 1px solid rgba(255,255,255,.18);
            box-shadow: 0 14px 28px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.08);
        }
        .login-qr-title {
            margin: 0 0 8px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .02em;
            color: rgba(255,255,255,.92);
        }
        .login-qr-code {
            width: 140px;
            height: 140px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
        }
        .login-qr-code img,
        .login-qr-code canvas,
        .login-qr-code table {
            max-width: 100%;
            max-height: 100%;
        }
        .login-qr-host {
            width: 100%;
            margin: 8px 0 0;
            font-size: 11px;
            line-height: 1.35;
            color: rgba(255,255,255,.82);
            word-break: break-all;
            text-align: center;
        }
        .login-qr-empty {
            font-size: 12px;
            color: #6c757d;
            text-align: center;
            padding: 0 8px;
        }
        .wrap {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            box-sizing: border-box;
        }
        .card {
            width: 100%;
            max-width: 420px;
            background: rgba(255,255,255,.92);
            border: 1px solid rgba(0,0,0,.08);
            border-radius: 14px;
            box-shadow: 0 8px 24px rgba(0,0,0,.12);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
            padding: 24px;
            box-sizing: border-box;
        }
        h1 {
            margin: 0 0 18px;
            font-size: 24px;
        }
        .error {
            margin: 0 0 14px;
            padding: 10px 12px;
            border-radius: 10px;
            background: #f8d7da;
            color: #842029;
            border: 1px solid #f1aeb5;
            font-size: 14px;
        }
        label {
            display: block;
            margin: 0 0 8px;
            font-weight: 600;
            font-size: 14px;
        }
        input[type="text"],
        input[type="password"] {
            width: 100%;
            box-sizing: border-box;
            height: 44px;
            padding: 0 12px;
            margin: 0 0 16px;
            border: 1px solid #ced4da;
            border-radius: 10px;
            background: #fff;
            font-size: 15px;
        }
        button {
            width: 100%;
            height: 46px;
            border: 0;
            border-radius: 10px;
            background: #0d6efd;
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
        }
        button:hover {
            background: #0b5ed7;
        }
        .sub-actions {
            margin-top: 12px;
            text-align: center;
            font-size: 14px;
            color: #495057;
        }
        .sub-actions a {
            color: #0d6efd;
            text-decoration: none;
            font-weight: 700;
        }
        .footer {
            background: #212529;
            color: #fff;
            display: flex;
            justify-content: space-between;
            gap: 16px;
            padding: 10px 20px;
            font-size: 14px;
            box-sizing: border-box;
        }
        @media (max-width: 640px) {
            .topbar {
                padding-right: 20px;
            }
            .topbar-inner {
                flex-direction: column;
                align-items: center;
            }
            .topbar-title {
                text-align: center;
            }
            .login-qr-panel {
                position: static;
                width: 100%;
                max-width: 220px;
                margin: 12px auto 0;
            }
            .footer {
                flex-direction: column;
                text-align: center;
            }
        }