body {
            background: linear-gradient(135deg, #e0e7ff 0%, #f8f9fa 100%);
            display: flex;
            align-items: center;
            min-height: 100vh;
            font-family: 'Nunito', sans-serif;
        }
        .login-container {
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.12);
            border-radius: 14px;
            overflow: hidden;
            max-width: 400px;
            width: 100%;
            margin: auto;
            background: #fff;
            animation: fadeInUp 0.6s ease;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .login-header {
            background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
            color: white;
            padding: 2rem 1.5rem 1.5rem;
            text-align: center;
        }
        .login-header img {
            max-height: 70px;
            margin-bottom: 1rem;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
        }
        .login-form {
            padding: 2rem 1.5rem;
        }
        .form-label {
            font-weight: 600;
            color: #2d3748;
            font-size: 0.9rem;
        }
        .input-group-text {
            background: #f1f5f9;
            border-right: 0;
        }
        .form-control {
            border-left: 0;
        }
        .form-control:focus {
            border-color: #4e73df;
            box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.15);
        }
        .btn-login {
            background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
            border: none;
            color: white;
            padding: 0.75rem;
            font-weight: 600;
            border-radius: 6px;
            transition: all 0.3s;
        }
        .btn-login:hover {
            background: linear-gradient(135deg, #3a56c5 0%, #1a3cb4 100%);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(78, 115, 223, 0.2);
        }
        .forgot-link {
            color: #4e73df;
            font-size: 0.85rem;
            font-weight: 600;
            text-decoration: none;
        }
        .forgot-link:hover {
            color: #224abe;
            text-decoration: underline;
        }
        .login-footer {
            text-align: center;
            font-size: 0.8rem;
            color: #718096;
            padding: 1rem;
            border-top: 1px solid #edf2f7;
            background: #f9fafb;
        }