body {
    font-family: "Segoe UI", sans-serif;
    background: #f5f5f5;
    padding: 20px;
}
.cart-container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 12px;
}
.cart-item-des{
    width: 100%;
    height: fit-content;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cart-item {
    display: flex;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.cart-item img {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    margin-right: 15px;
}

.item-info {
    flex: 1;
}

.item-name {
    font-size: 17px;
    font-weight: bold;
}

.price {
    color: #d9534f;
    font-weight: bold;
}

.quantity-box {
    display: flex;
    align-items: center;
    gap: 8px;
}

.quantity-box button {
    width: 28px;
    height: 28px;
    border: none;
    background: #333;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

.remove-btn {
    background: #e9e9e9;
    color: rgb(0, 0, 0);
    border: none;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    margin-left: 15px;
}

.total-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: center;
    margin-top: 20px;
    font-size: 20px;
    font-weight: bold;
}
/* Nút thanh toán */
.pay-btn {
    padding: 12px 20px;
    background: #000000;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 17px;
    font-weight: 600;
    transition: 0.25s;
}
.pay-btn:hover {
    background: #005dc7;
}
.contact-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.55);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.contact-card {
    width: 90%;
    max-width: 500px;
    background: #fff;
    padding: 25px 30px;
    border-radius: 16px;
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
    position: relative;
    animation: fadeUp 0.3s ease;
    text-align: center;
    border: 1px solid #e5e5e5;
}
@keyframes fadeUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
.close-btn {
    position: absolute;
    top: 12px;
    right: 14px;
    background: #ff4d4d;
    border: none;
    color: white;
    width: 28px;
    height: 28px;
    font-size: 17px;
    border-radius: 50%;
    cursor: pointer;
}
.close-btn:hover {
    background: #d93838;
}
.qr-img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    margin-bottom: 20px;
    border-radius: 10px;
}
.contact-title {
    font-size: 26px;
    margin-bottom: 10px;
    font-weight: 600;
}
.contact-sub {
    font-size: 18px;
    margin-bottom: 15px;
    color: #555;
    font-weight: 500;
    text-transform: uppercase;
}
.contact-list {
    list-style: none;
    padding-left: 0;
}

.contact-list li {
    background: #f8f9fa;
    border-left: 4px solid #007bff;
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 12px;
    text-align: left;
}

.contact-list a {
    color: #007bff;
    font-weight: 500;
    word-break: break-all;
}
.contact-list a:hover {
    text-decoration: underline;
}

.tag {
    font-weight: 700;
    color: #333;
}
@media (max-width: 768px) {
    .contact-card {
        width: 90%;
        padding: 20px;
        border-radius: 14px;
    }

    .qr-img {
        width: 140px;
        height: 140px;
    }

    .contact-title {
        font-size: 22px;
    }

    .contact-sub {
        font-size: 16px;
    }

    .contact-list li {
        font-size: 15px;
        padding: 10px 12px;
    }
}
@media(max-width:500px){
h1{
    font-size: 1.5em;
}
    .cart-container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 10px;
    border-radius: 9px;
}
.cart-item {
    display: block;
    align-items: center;
    justify-content: space-between;
    padding: 8px;
    border-bottom: 1px solid #eee;
}

.cart-item img {
    width: 97%;
    height: inherit;
    border-radius: 7px;
    margin-right: 15px;
}

.item-info {
    flex: 1;
    font-size: xx-small;
}

.item-name {
    font-size: 8px;
    font-weight: bold;
}

.price {
    color: #d9534f;
    font-weight: bold;
}

.quantity-box {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: xx-small;
}

.quantity-box button {
    width: 18px;
    height: 18px;
    border: none;
    background: #333;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

.remove-btn {
    border: none;
    padding: 3px 5px;
    border-radius: 6px;
    cursor: pointer;
    margin-left: 5px;
    font-size: xx-small;
}

.total-box {
    text-align: right;
    margin-top: 5px;
    font-size: xx-small;
    font-weight: bold;
}
}
@media (max-width: 480px) {
    .contact-card {
        width: 94%;
        padding: 18px;
        border-radius: 12px;
    }

    .qr-img {
        width: 120px;
        height: 120px;
        margin-bottom: 15px;
    }

    .contact-title {
        font-size: 20px;
        line-height: 26px;
    }

    .contact-sub {
        font-size: 14px;
    }

    .contact-list li {
        font-size: 14px;
        padding: 9px 10px;
        border-left-width: 3px;
    }

    .close-btn {
        width: 26px;
        height: 26px;
        font-size: 15px;
        top: 10px;
        right: 10px;
    }

    .pay-btn {
        padding: 12px 20px;
        font-size: 10px;
    }
}

/* Màn hình cực nhỏ dưới 360px */
@media (max-width: 360px) {
    .qr-img {
        width: 100px;
        height: 100px;
    }

    .contact-title {
        font-size: 18px;
    }

    .contact-list li {
        font-size: 13px;
        padding: 8px;
    }
}