.product-page {
    padding: 2rem 0 3rem;
}

.product-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
    gap: 2rem;
    align-items: start;
}

.product-gallery,
.product-details,
.product-description-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-sizing: border-box;
}

.main-product-image {
    width: 100%;
    max-width: 100%;
    border-radius: 6px;
    display: block;
    margin-bottom: 1rem;
}

.thumbnail-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.thumbnail-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid #ddd;
    box-sizing: border-box;

    transition: transform 0.15s ease, border-color 0.15s ease;
}

.thumbnail-image:hover {
    transform: scale(1.05);
    border-color: #666;
}

.thumbnail-image.active {
    border-color: #111;
}


.product-details {
    position: sticky;
    top: 1.5rem;
}

.product-details h1 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.9rem;
    line-height: 1.2;
}

.product-short-description {
    margin: 0 0 1rem;
    color: #444;
    line-height: 1.5;
}

.product-price {
    font-size: 1.25rem;
    font-weight: bold;
    margin: 1rem 0 1.25rem;
}

.product-field {
    margin-bottom: 1rem;
}

.product-field label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: bold;
}

.product-field input,
.product-field select {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.field-help {
    display: block;
    margin-top: 0.35rem;
    color: #666;
    font-size: 0.9rem;
}

.order-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.order-actions button,
.order-actions .checkout-link,
.shop-button {
    flex: 1;
    padding: 0.7rem;
    background: #21201e;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    box-sizing: border-box;
}

.order-actions button:hover,
.order-actions .checkout-link:hover,
.shop-button:hover {
    background: #444;
}

.product-note {
    margin-top: 1rem;
    color: #555;
    font-size: 0.95rem;
}

.product-description-section {
    margin-top: 2rem;
}

.product-description-card h2,
.product-description-card h3 {
    margin-top: 1.4rem;
}

.product-description-card h2:first-child,
.product-description-card h3:first-child {
    margin-top: 0;
}

.product-description-card p {
    line-height: 1.65;
}

.product-description-card ul {
    padding-left: 1.25rem;
    line-height: 1.6;
}

.shop-grid-section {
    padding: 2rem 0 3rem;
}

.shop-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.shop-card {
    background: #fff;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.shop-card img {
    width: 100%;
    max-width: 100%;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.shop-card h3 {
    margin-top: 0;
}

@media (max-width: 850px) {
    .product-layout,
    .shop-grid {
        grid-template-columns: 1fr;
    }

    .product-details {
        position: static;
        top: auto;
    }

    .order-actions {
        flex-direction: column;
    }
}

.cart-page-section {
    padding: 2rem 0 3rem;
}

.cart-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.cart-items-panel,
.cart-summary-panel {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-sizing: border-box;
}

.cart-item-card {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #ddd;
}

.cart-item-card:last-child {
    border-bottom: none;
}

.cart-item-image-wrap {
    width: 100%;
}

.cart-item-image {
    width: 100%;
    border-radius: 6px;
    display: block;
}

.cart-item-details h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.cart-item-details p {
    margin: 0.35rem 0;
}

.cart-item-price {
    margin-top: 0.75rem;
    font-size: 1.05rem;
}

.remove-item-button,
.secondary-button,
#checkout-button {
    padding: 0.7rem 1rem;
    background: #21201e;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    box-sizing: border-box;
}

.remove-item-button:hover,
.secondary-button:hover,
#checkout-button:hover {
    background: #444;
}

.secondary-button {
    background: #666;
}

.secondary-button:hover {
    background: #555;
}

.summary-line {
    display: flex;
    justify-content: space-between;
    margin: 0.75rem 0;
}

.total-line {
    font-size: 1.2rem;
    font-weight: bold;
    padding-top: 0.75rem;
    border-top: 1px solid #ddd;
}

.cart-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.cart-help-text {
    margin-top: 1rem;
    color: #666;
    font-size: 0.92rem;
}

.empty-cart-message {
    text-align: center;
    padding: 2rem 1rem;
}

.empty-cart-message .shop-button {
    display: inline-block;
    margin-top: 1rem;
}

@media (max-width: 850px) {
    .cart-layout {
        grid-template-columns: 1fr;
    }

    .cart-item-card {
        grid-template-columns: 1fr;
    }

    .cart-item-image {
        max-width: 220px;
    }
}


.cart-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #21201e;
    color: white;
    padding: 12px 16px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 999;
}


/* Product description style */
.product-quick-guide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 0 0 22px 0;
    padding: 16px;
    background: #21201e;
    border: 1px solid #3a3835;
    border-radius: 10px;
    box-sizing: border-box;
}

.guide-item {
    display: flex;
    flex-direction: column;
    padding: 12px 14px;
    background: #2b2926;
    border: 1px solid #3f3c38;
    border-radius: 8px;
    box-sizing: border-box;
}

.guide-item strong {
    color: #c8ccd2;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.guide-item span {
    color: #e3e5e8;
    font-size: 0.95rem;
    line-height: 1.45;
}

.product-details-dropdown {
    margin: 20px 0 0 0;
    border: 1px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    background: #f7f7f7;
}

.product-details-dropdown summary {
    cursor: pointer;
    list-style: none;
    padding: 14px 16px;
    font-weight: 600;
    color: #c8ccd2;
    background: #21201e;
    user-select: none;
}

.product-details-dropdown summary::-webkit-details-marker {
    display: none;
}

.product-details-dropdown summary::after {
    content: "+";
    float: right;
    color: #c8ccd2;
    font-size: 1.1rem;
    line-height: 1;
}

.product-details-dropdown[open] summary::after {
    content: "−";
}

.product-details-inner {
    padding: 16px 18px;
    background: #fff;
    border-top: 1px solid #ddd;
    color: #333;
    line-height: 1.65;
}

.product-details-inner p,
.product-details-inner li {
    color: #333;
}

.product-details-inner strong {
    color: #21201e;
}

.product-details-inner ul {
    padding-left: 1.25rem;
    line-height: 1.6;
}

@media (max-width: 700px) {
    .product-quick-guide {
        grid-template-columns: 1fr;
    }
}


.product-details-dropdown summary {
    position: relative;
}

.product-details-dropdown summary::after {
    transition: transform 0.2s ease;
}

.product-details-dropdown[open] summary::after {
    transform: rotate(45deg);
}

.guide-item strong {
    color: #c8ccd2;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}


.underline {
    border-bottom: 2px solid #555;
    display: inline-block;
    padding-bottom: .25px;
}