body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Nunito', sans-serif;
        }

        .login-card {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            overflow: hidden;
            max-width: 450px;
            width: 100%;
        }

        .login-header {
            background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
            color: white;
            padding: 2.5rem 2rem;
            text-align: center;
        }

        .login-header i {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .login-header h3 {
            margin: 0;
            font-weight: 600;
        }

        .login-body {
            padding: 2.5rem 2rem;
        }

        .form-control {
            border-radius: 10px;
            padding: 0.75rem 1rem;
            border: 1px solid #d1d3e2;
        }

        .form-control:focus {
            border-color: #4e73df;
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
        }

        .input-group-text {
            background-color: #f8f9fc;
            border-radius: 10px 0 0 10px;
            border-right: none;
        }

        .btn-login {
            background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
            border: none;
            border-radius: 10px;
            padding: 0.75rem;
            font-weight: 600;
            color: white;
            transition: all 0.3s;
        }

        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(78, 115, 223, 0.4);
            color: white;
        }

        .alert {
            border-radius: 10px;
        }

        .form-check-input:checked {
            background-color: #4e73df;
            border-color: #4e73df;
        }

        .forgot-password {
            color: #4e73df;
            text-decoration: none;
            font-size: 0.9rem;
        }

        .forgot-password:hover {
            text-decoration: underline;
        }