#checkoutAuthModal {
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            background-color: rgba(0, 0, 0, 0.4) !important;
        }

        #checkoutAuthModal .modal-content {
            background: #8E1A34;
            border: 0;
            border-radius: 16px;
            box-shadow: 0 18px 45px rgba(0, 0, 0, 0.32);
            color: #F8F9FA;
            overflow: hidden;
        }

        #checkoutAuthModal .modal-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.22);
            padding: 1.5rem 1.5rem 1rem;
            position: relative;
            justify-content: center;
        }

        #checkoutAuthModal .modal-title {
            color: #FFFFFF;
            font-weight: 700;
            letter-spacing: 0.01em;
            text-align: center;
        }

        #checkoutAuthModal .modal-header .btn-close {
            position: absolute;
            right: 1.5rem;
        }

        #checkoutAuthModal .modal-body {
            padding: 1.5rem;
        }

        #checkoutAuthModal .modal-body p {
            color: #F8F9FA;
            font-size: 1rem;
            line-height: 1.65;
        }

        #checkoutAuthModal .checkout-auth-btn {
            border-radius: 999px;
            font-weight: 700;
            padding: 0.7rem 1.35rem;
            text-decoration: none;
            transition: background-color .2s ease, color .2s ease, transform .2s ease;
        }

        #checkoutAuthModal .checkout-auth-btn:hover {
            transform: translateY(-2px);
        }

        #checkoutAuthModal .checkout-auth-guest {
            border: 1px solid #FFFFFF;
            color: #FFFFFF;
        }

        #checkoutAuthModal .checkout-auth-guest:hover {
            background: #FFFFFF;
            color: #8E1A34;
        }

        #checkoutAuthModal .checkout-auth-login {
            background: #FFFFFF;
            border: 1px solid #FFFFFF;
            color: #8E1A34;
        }

        #checkoutAuthModal .checkout-auth-login:hover {
            background: rgba(255, 255, 255, 0.86);
            color: #6F1228;
        }