* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Noto Sans Lao', 'Kanit', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fc 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 20px;
            color: #5a5c69;
        }

        .auth-container {
            width: 100%;
            max-width: 450px;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            overflow: hidden;
            transition: transform 0.3s ease;
        }

        .auth-container:hover {
            transform: translateY(-5px);
        }

        .auth-header {
            background: linear-gradient(135deg, #202C45 0%, #202C45 100%);
            color: white;
            padding: 2rem;
            text-align: center;
            position: relative;
            font-family: "Noto Sans Lao", "Phetsarath OT", "Saysettha OT", "Saysettha MX", sans-serif;
        }

        .auth-header h2 {
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .auth-header p {
            opacity: 0.9;
        }

        .auth-body {
            padding: 2rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
            position: relative;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: #5a5c69;
        }

        .input-group {
            position: relative;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem 0.75rem 3rem;
            border: 2px solid #e3e6f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.3s;
        }

        .form-control:focus {
            border-color: #4e73df;
            box-shadow: 0 0 0 0.25rem rgba(78, 115, 223, 0.25);
        }

        .input-icon {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: #6c757d;
            z-index: 5;
        }

        .btn-login {
            background: linear-gradient(135deg, #202C45 0%, #202C45 100%);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            cursor: pointer;
            width: 100%;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(78, 115, 223, 0.4);
        }

        .btn-login:active {
            transform: translateY(0);
        }

        .btn-login::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 5px;
            height: 5px;
            background: rgba(255, 255, 255, 0.5);
            opacity: 0;
            border-radius: 100%;
            transform: scale(1, 1) translate(-50%);
            transform-origin: 50% 50%;
        }

        .btn-login:focus:not(:active)::after {
            animation: ripple 1s ease-out;
        }

        @keyframes ripple {
            0% {
                transform: scale(0, 0);
                opacity: 0.5;
            }

            100% {
                transform: scale(20, 20);
                opacity: 0;
            }
        }

        .alert {
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
        }

        .alert-danger {
            background-color: rgba(231, 74, 59, 0.1);
            border: 1px solid #e74a3b;
            color: #e74a3b;
        }

        .alert-icon {
            margin-right: 0.75rem;
            font-size: 1.2rem;
        }

        .auth-footer {
            text-align: center;
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e3e6f0;
        }

        .auth-footer a {
            color: #4e73df;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .auth-footer a:hover {
            color: #2e59d9;
            text-decoration: underline;
        }

        .password-toggle {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #6c757d;
            z-index: 5;
        }

        .security-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            margin-top: 1.5rem;
            color: #6c757d;
            font-size: 0.9rem;
        }

        @media (max-width: 576px) {
            .auth-container {
                max-width: 100%;
            }

            .auth-header,
            .auth-body {
                padding: 1.5rem;
            }
        }

        .logo {
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .logo img {
            height: 60px;
        }

        .language-switcher {
            position: absolute;
            top: 1rem;
            right: 1rem;
        }

        .btn-language {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }

        .btn-language:hover {
            background: rgba(255, 255, 255, 0.3);
        }