:root {
            --primary-color: #E91E63;
            --secondary-color: #FFC107;
            --dark-color: #2C3E50;
            --light-bg: #e9e9e9;
        }
        
        * {
            font-family: 'Poppins', sans-serif;
        }
        
        body {
            background-color: var(--light-bg);
            color: var(--dark-color);
            a, .btn-link{
                text-decoration: none;
                color: var(--dark-color);
            }
        }
        
        .hero-section {
            /* background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%); */
            padding: 60px 0;
            position: relative;
        }
        
        .robot-img {
            /* max-width: 35%; */
            height: auto;
        }
        
        .logo-title {
            max-width: 400px;
            height: auto;
        }
        
        .description-text {
            font-size: 1rem;
            line-height: 1.8;
            color: #555;
            text-align: justify;
        }
        
        #why-section {
            background-color: white;
            right: 0;
        }

        .why-section {
            /* background-color: white; */
            padding: 60px 0;
        }
        
        .why-section h2 {
            font-weight: 700;
            font-size: 2.5rem;
            margin-bottom: 40px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .reason-item {
            margin-bottom: 30px;
        }
        
        .reason-item h4 {
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        
        .reason-item p {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        .subscription-section {
            /* background-color: var(--light-bg); */
            padding: 60px 0;
        }
        
        .subscription-section h2 {
            font-weight: 700;
            font-size: 2.5rem;
            margin-bottom: 40px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .form-control, .form-select {
            border-radius: 0;
            border: 1px solid #ddd;
            padding: 12px 15px;
            font-size: 0.95rem;
        }
        
        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(233, 30, 99, 0.25);
        }
        
        .form-label {
            font-weight: 500;
            color: var(--dark-color);
            margin-bottom: 8px;
            text-transform: uppercase;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
        }
        
        .pricing-box {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            background-color: #2C3E50;
            min-height: 250px;
            color: white;
            padding: 20px;
            text-align: center;
            justify-content: center;
            align-items: center;
            margin: 30px 0;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 3px solid transparent;
        }
        
        .pricing-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        
        .pricing-box.selected {
            border-color: var(--secondary-color);
            background-color: #34495e;
        }
        
        .pricing-box h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0;
        }
        
        .pricing-box p {
            margin: 10px 0 0 0;
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        .commitment-text {
            background-color: white;
            padding: 30px;
            margin: 30px 0;
            border-left: 4px solid var(--primary-color);
        }
        
        .commitment-text p {
            margin: 8px 0;
            font-size: 0.9rem;
            font-style: italic;
            color: #555;
        }
        
        .btn-subscribe {
            background-color: var(--primary-color);
            color: white;
            padding: 15px 50px;
            border: none;
            font-size: 1.2rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: all 0.3s ease;
            width: 100%;
            margin-top: 20px;
        }
        
        .btn-subscribe:hover {
            background-color: #c2185b;
            color: lightgray;
            transform: translateY(-2px);
            box-shadow: 0 5px 20px rgba(233, 30, 99, 0.4);
        }
        
        .btn-subscribe:disabled {
            background-color: #ccc;
            cursor: not-allowed;
        }
        
        .robot-left {
            position: absolute;
            left: -8em;
            max-width: 500px;
            margin-bottom: 30px;
        }
            
            /* Décalage de la colonne de droite en desktop */
        @media (min-width: 992px) {
            .hero-right-column {
                padding-top: 20%;
            }
        }

        /* Centrage en tablette/mobile */
        @media (max-width: 991px) {
            .hero-section .text-center {
                text-align: center !important;
            }

            .hero-section img {
                margin-left: auto;
                margin-right: auto;
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                padding: 40px 0;
            }
            
            .robot-img, .logo-title {
                max-width: 300px;
            }
            
            #why-section {
                margin-top: 60%;
                opacity: 0.8;
            }
            
            .why-section h2, .subscription-section h2 {
                font-size: 2rem;
            }
            
            .pricing-box {
                margin: 15px 0;
            }
        }
        
        .error-message {
            color: #dc3545;
            font-size: 0.9rem;
            margin-top: 5px;
            display: none;
        }
        
        .loading-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0,0,0,0.7);
            z-index: 9999;
            justify-content: center;
            align-items: center;
        }
        
        .loading-overlay.active {
            display: flex;
        }
        
        .spinner {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(255,255,255,0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }