* { box-sizing: border-box; }
        body {
            margin: 0;
            font-family: 'Segoe UI', Arial, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #0d1b2e;
        }
        .auth-shell {
            display: flex;
            width: 100%;
            max-width: 1000px;
            min-height: 560px;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.4);
        }
        .auth-panel-brand {
            flex: 1 1 40%;
            background: linear-gradient(135deg, #163B6D 0%, #1E5A8E 45%, #BD710D 100%);
            color: #fff;
            padding: 3em 2.5em;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
        }
        .auth-panel-brand h2 {
            font-size: 1.8em;
            letter-spacing: 2px;
            margin: 0 0 0.3em;
            border-bottom: 3px solid rgba(255,255,255,0.6);
            display: inline-block;
            padding-bottom: 0.3em;
        }
        .auth-panel-brand .badge {
            width: 64px;
            height: 64px;
            border: 2px solid #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8em;
            margin: 1.5em 0;
            background: rgba(0,0,0,0.15);
            padding: 10px;
        }
        .auth-panel-brand .badge img { width: 100%; height: 100%; object-fit: contain; }
        .auth-panel-brand p { opacity: 0.9; line-height: 1.5; }
        .auth-panel-form {
            flex: 1 1 60%;
            background: #12121a;
            color: #eee;
            padding: 3em 3em;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .auth-panel-form .badge {
            width: 64px;
            height: 64px;
            border: 2px solid #BD710D;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8em;
            margin-bottom: 1em;
            padding: 10px;
        }
        .auth-panel-form .badge img { width: 100%; height: 100%; object-fit: contain; }
        .auth-panel-form h1 {
            font-size: 1.6em;
            margin: 0 0 1.5em;
            text-align: center;
        }
        .auth-panel-form form { width: 100%; max-width: 340px; }
        .auth-field {
            width: 100%;
            background: #1c1c28;
            border: 1px solid #333;
            border-radius: 24px;
            padding: 0.8em 1.2em;
            margin-bottom: 1em;
            color: #eee;
            font-size: 0.95em;
        }
        .auth-field:focus { outline: none; border-color: #BD710D; }
        .auth-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85em;
            margin-bottom: 1.5em;
            color: #999;
        }
        .auth-row label { display: flex; align-items: center; gap: 0.4em; color: #ccc; }
        .auth-submit {
            width: 100%;
            background: #163B6D;
            color: #fff;
            border: none;
            border-radius: 24px;
            padding: 0.85em;
            font-size: 1em;
            font-weight: bold;
            cursor: pointer;
        }
        .auth-submit:hover { background: #1E5A8E; }
        .auth-error {
            background: rgba(189,113,13,0.15);
            border: 1px solid #BD710D;
            color: #f0b47a;
            padding: 0.6em 1em;
            border-radius: 6px;
            margin-bottom: 1em;
            font-size: 0.9em;
            width: 100%;
            max-width: 340px;
        }
        .auth-footer {
            margin-top: 2em;
            font-size: 0.75em;
            color: #666;
            text-align: center;
        }
        @media (max-width: 700px) {
            .auth-shell { flex-direction: column; }
            .auth-panel-brand { padding: 2em; }
        }