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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
            background: #0a0a0a;
            background-image: 
                radial-gradient(at 0% 0%, rgba(102, 126, 234, 0.15) 0px, transparent 50%),
                radial-gradient(at 100% 0%, rgba(118, 75, 162, 0.15) 0px, transparent 50%),
                radial-gradient(at 100% 100%, rgba(102, 126, 234, 0.15) 0px, transparent 50%);
            min-height: 100vh;
            padding: 15px;
        }

        .container {
            max-width: 680px;
            margin: 30px auto;
            background: rgba(255, 255, 255, 0.98);
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            overflow: hidden;
        }

        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 35px 25px;
            text-align: center;
        }

        .badge {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 15px;
            border: 1px solid rgba(255,255,255,0.3);
        }

        .header h1 {
            font-size: 22px;
            font-weight: 800;
            color: white;
            line-height: 1.3;
            margin-bottom: 15px;
        }

        .header .highlight {
            font-size: 32px;
            display: block;
            background: linear-gradient(to right, #ffd700, #ffed4e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 900;
            margin: 8px 0;
        }

        .header .subheadline {
            font-size: 16px;
            color: rgba(255,255,255,0.95);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .benefits-stack {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin: 20px 0;
        }

        .benefit-item {
            background: rgba(255,255,255,0.15);
            padding: 10px 15px;
            border-radius: 10px;
            color: white;
            font-size: 14px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
            border: 1px solid rgba(255,255,255,0.2);
        }

        .benefit-item::before {
            content: '✓';
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            background: rgba(255,255,255,0.3);
            border-radius: 50%;
            font-weight: bold;
            flex-shrink: 0;
        }

        .date-badge {
            background: rgba(0,0,0,0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            color: white;
            margin-top: 15px;
            border: 1px solid rgba(255,255,255,0.3);
        }

        .content {
            padding: 35px 25px;
        }

        .section-title {
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: #667eea;
            margin-bottom: 25px;
            text-align: center;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #1a1a1a;
            font-weight: 600;
            font-size: 15px;
        }

        .required {
            color: #e74c3c;
        }

        .whatsapp-row {
            display: flex;
            gap: 10px;
        }

        .whatsapp-ddi {
            flex: 0 0 90px;
        }

        .whatsapp-numero {
            flex: 1;
        }

        input[type="text"],
        input[type="email"],
        input[type="tel"],
        select,
        textarea {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #e8e8e8;
            border-radius: 10px;
            font-size: 16px;
            font-family: inherit;
            transition: all 0.3s;
            background: white;
            color: #1a1a1a;
        }

        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
        }

        textarea {
            min-height: 100px;
            resize: vertical;
        }

        .helper-text {
            font-size: 13px;
            color: #666;
            margin-top: 6px;
            line-height: 1.4;
        }

        .error-message {
            color: #e74c3c;
            font-size: 13px;
            margin-top: 6px;
            display: none;
            font-weight: 500;
        }

        .submit-btn {
            width: 100%;
            padding: 16px 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 15px;
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
            line-height: 1.3;
        }

        .submit-btn:active {
            transform: scale(0.98);
        }

        .submit-btn:disabled {
            background: #bdc3c7;
            cursor: not-allowed;
        }

        .confirmation-screen {
            display: none;
            text-align: center;
            padding: 20px 0;
        }

        .success-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 25px;
            background: linear-gradient(135deg, #52c234 0%, #27ae60 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            color: white;
            box-shadow: 0 10px 40px rgba(82, 194, 52, 0.3);
        }

        .confirmation-title {
            font-size: 26px;
            font-weight: 800;
            color: #1a1a1a;
            margin-bottom: 12px;
        }

        .confirmation-subtitle {
            font-size: 17px;
            color: #666;
            margin-bottom: 6px;
        }

        .confirmation-name {
            font-size: 22px;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 30px;
        }

        .confirmation-message {
            color: #444;
            font-size: 16px;
            line-height: 1.6;
            margin-bottom: 35px;
            font-weight: 600;
        }

        .whatsapp-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            width: 100%;
            padding: 20px 30px;
            background: linear-gradient(135deg, #25D366 0%, #20BA5A 100%);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 700;
            font-size: 17px;
            transition: all 0.3s;
            box-shadow: 0 12px 35px rgba(37, 211, 102, 0.35);
        }

        .whatsapp-btn:active {
            transform: scale(0.98);
        }

        .whatsapp-icon {
            font-size: 24px;
        }

        .loading {
            display: none;
            text-align: center;
            padding: 50px 20px;
        }

        .spinner {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            border: 4px solid rgba(102, 126, 234, 0.1);
            border-top: 4px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .loading-text {
            color: #666;
            font-size: 16px;
            font-weight: 500;
        }

        .container.confirmation-mode .header {
            display: none;
        }

        @media (min-width: 641px) {
            body {
                padding: 20px;
            }

            .container {
                margin: 60px auto;
                border-radius: 24px;
            }
            
            .header {
                padding: 60px 40px;
            }
            
            .header h1 {
                font-size: 36px;
            }

            .header .highlight {
                font-size: 44px;
            }

            .header .subheadline {
                font-size: 20px;
            }

            .benefit-item {
                font-size: 15px;
                padding: 12px 20px;
            }

            .date-badge {
                padding: 15px 30px;
                font-size: 17px;
            }
            
            .content {
                padding: 50px 40px;
            }

            .submit-btn {
                padding: 20px;
                font-size: 18px;
            }

            .submit-btn:hover:not(:disabled) {
                transform: translateY(-2px);
                box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
            }

            .success-icon {
                width: 100px;
                height: 100px;
                font-size: 50px;
                margin-bottom: 30px;
            }

            .confirmation-title {
                font-size: 32px;
            }

            .confirmation-name {
                font-size: 26px;
            }

            .confirmation-message {
                font-size: 17px;
            }

            .whatsapp-btn {
                width: auto;
                padding: 22px 45px;
                font-size: 19px;
            }

            .whatsapp-btn:hover {
                transform: translateY(-3px);
                box-shadow: 0 18px 45px rgba(37, 211, 102, 0.45);
            }

            .confirmation-screen {
                padding: 30px 0;
            }
        }