:root {
            --primary-navy: #1a375d;
            --accent-blue: #2c5282;
            --border-light: #e2e8f0;
        }

        body {
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: #f0f4f8;
        }

        .login-card {
            width: 100%;
            max-width: 400px;
            border: 1px solid var(--border-light);
            border-radius: 16px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.05);
            background: white;
            overflow: hidden;
        }

        .login-header {
            background-color: var(--primary-navy);
            padding: 1.8rem;
        }

        .form-label {
            font-weight: 600;
            color: var(--primary-navy);
            font-size: 0.85rem;
        }

        .input-group-text {
            border-radius: 8px 0 0 8px;
            background-color: #f8f9fa;
        }

        .form-control {
            padding: 0.75rem;
            border-radius: 8px;
            border: 1px solid #cbd5e0;
        }

        .password-toggle {
            cursor: pointer;
            border-radius: 0 8px 8px 0 !important;
        }

        .btn-login {
            background-color: var(--accent-blue);
            color: white;
            border: none;
            padding: 0.8rem;
            border-radius: 8px;
            font-weight: bold;
        }

        .btn-login:hover {
            background-color: var(--primary-navy);
        }

        /* Mobile tweaks */
        @media (max-width: 576px) {
            body {
                padding: 1rem;
                align-items: center;
            }

            .login-card {
                margin-top: 2rem;
                border-radius: 12px;
            }
        }