@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
        
        :root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --secondary: #7209b7;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --light-gray: #e9ecef;
            --success: #4cc9f0;
            --border-radius: 12px;
            --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            color: var(--dark);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            width: 100%;
            max-width: 480px;
        }
        
        .card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }
        
        .card-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 25px 30px;
            text-align: center;
        }
        
        .card-header h1 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .card-header p {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        .card-body {
            padding: 30px;
        }
        
        .integration-options {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 20px;
        }
        
        .integration-option {
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            padding: 25px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 15px;
            position: relative;
        }
        
        .integration-option:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .integration-option.active {
            border-color: var(--primary);
            background-color: rgba(67, 97, 238, 0.05);
        }
        
        .option-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .option-content h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 5px;
        }
        
        .option-content p {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 0;
        }
        
        .option-check {
            position: absolute;
            top: 15px;
            right: 15px;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            border: 2px solid var(--light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        
        .integration-option.active .option-check {
            background-color: var(--primary);
            border-color: var(--primary);
        }
        
        .option-check i {
            color: white;
            font-size: 0.7rem;
            opacity: 0;
            transition: var(--transition);
        }
        
        .integration-option.active .option-check i {
            opacity: 1;
        }
        
        .btn-container {
            margin-top: 30px;
            display: flex;
            gap: 15px;
        }
        
        .btn {
            flex: 1;
            padding: 14px 20px;
            border: none;
            border-radius: var(--border-radius);
            font-family: 'Poppins', sans-serif;
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
        }
        
        .btn-outline {
            background: transparent;
            color: var(--gray);
            border: 1px solid var(--light-gray);
        }
        
        .btn-outline:hover {
            background-color: var(--light-gray);
            color: var(--dark);
        }
        
        .security-note {
            margin-top: 25px;
            padding: 15px;
            background-color: rgba(76, 201, 240, 0.1);
            border-radius: var(--border-radius);
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }
        
        .security-note i {
            color: var(--success);
            font-size: 1.2rem;
            margin-top: 2px;
        }
        
        .security-note p {
            font-size: 0.85rem;
            color: var(--gray);
            margin: 0;
        }
        
        .card-footer {
            padding: 20px 30px;
            background-color: var(--light);
            text-align: center;
            border-top: 1px solid var(--light-gray);
        }
        
        .card-footer p {
            font-size: 0.8rem;
            color: var(--gray);
            margin: 0;
        }
        
        .card-footer a {
            color: var(--primary);
            font-weight: 500;
        }
        
        @media (max-width: 576px) {
            .card-header, .card-body, .card-footer {
                padding: 20px;
            }
            
            .integration-option {
                padding: 20px;
            }
            
            .btn-container {
                flex-direction: column;
            }
        }