body {
            background-color: #f4f7f6;
            font-family: 'Nunito', sans-serif;
        }

        .payment-wrapper {
            margin-top: 100px;
            margin-bottom: 50px;
        }

        .payment-card {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            border: none;
            overflow: hidden;
        }

        .payment-header {
            background: linear-gradient(#d9534f);
            color: white;
            padding: 30px;
            text-align: center;
        }

        .payment-header h1 {
            font-weight: 800;
            font-style: italic;
            text-transform: uppercase;
            margin: 0;
            font-size: 1.8rem;
            letter-spacing: 1px;
        }

        .payment-body {
            padding: 40px;
        }

        .form-label {
            font-weight: 700;
            color: #444;
            text-transform: uppercase;
            font-size: 0.85rem;
        }

        .input-custom {
            border: 2px solid #eee;
            border-radius: 8px;
            padding: 12px;
            font-weight: 700;
            color: #d9534f;
            transition: border-color 0.3s;
        }

        .input-custom:focus {
            border-color: #d9534f;
            box-shadow: none;
        }

        /* Style pour l'élément de carte Stripe */
        #card-element {
            padding: 15px;
            border: 2px solid #eee;
            border-radius: 8px;
            background: #fcfcfc;
            margin-bottom: 20px;
        }

        #payer {
            background-color: #d9534f;
            border: none;
            padding: 16px;
            font-weight: 800;
            letter-spacing: 1px;
            border-radius: 8px;
            transition: all 0.3s;
            margin-top: 10px;
        }

        #payer:hover {
            background-color: #c9302c;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(217, 83, 79, 0.3);
        }

        #payer:disabled {
            background-color: #ccc;
            transform: none;
        }

        .security-footer {
            text-align: center;
            color: #888;
            font-size: 0.8rem;
            margin-top: 25px;
        }

        .security-footer i {
            color: #5cb85c;
            margin-right: 5px;
        }