:root {
    --shopify-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --shopify-black: #121212;
    --shopify-dark-gray: #4a4a4a;
    --shopify-light-gray: #e5e5e5;
    --shopify-border: #e1e3e5;
    --shopify-bg-gray: #f5f5f5;
    --shopify-accent: #000000; /* Shopify 默认多为黑色强调色 */
    --shopify-danger: #d72c0d;
    --shopify-success: #008060;
}

body.mall-page {
    font-family: var(--shopify-font);
    color: var(--shopify-black);
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
}

/* --- Navigation --- */
.mall-navbar {
    background: #fff;
    border-bottom: 1px solid var(--shopify-border);
    padding: 1rem 0;
    box-shadow: none !important; /* 去除阴影，追求扁平化 */
}

.mall-navbar .navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--shopify-black);
    letter-spacing: -0.5px;
}

.mall-navbar .nav-link {
    color: var(--shopify-dark-gray);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.mall-navbar .nav-link:hover {
    color: var(--shopify-black);
}

/* --- Buttons --- */
.btn-shopify-primary {
    background-color: var(--shopify-black);
    color: #fff;
    border: 1px solid var(--shopify-black);
    border-radius: 4px; /* 轻微圆角 */
    padding: 10px 24px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    width: 100%;
    display: inline-block;
    text-align: center;
    cursor: pointer;
}

.btn-shopify-primary:hover {
    background-color: #333;
    border-color: #333;
    color: #fff;
    transform: translateY(-1px);
}

.btn-shopify-outline {
    background-color: transparent;
    color: var(--shopify-black);
    border: 1px solid var(--shopify-border);
    border-radius: 4px;
    padding: 8px 20px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-shopify-outline:hover {
    border-color: var(--shopify-black);
}

/* --- Product Card (Grid) --- */
.shopify-card {
    border: none;
    background: #fff;
    transition: all 0.3s ease;
    height: 100%;
}

.shopify-card:hover .product-img-wrap img {
    transform: scale(1.05);
}

.product-img-wrap {
    position: relative;
    overflow: hidden;
    padding-bottom: 100%; /* 1:1 Square images */
    background-color: #f4f4f4;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.product-img-wrap img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover; /* 确保图片填满 */
    object-position: center;
    transition: transform 0.5s ease;
}

.quick-add-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: #fff;
    border: 1px solid var(--shopify-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    color: var(--shopify-black);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.product-img-wrap:hover .quick-add-btn {
    opacity: 1;
    transform: translateY(0);
}

.quick-add-btn:hover {
    background: var(--shopify-black);
    color: #fff;
}

.shopify-card-body {
    text-align: left;
}

.shopify-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--shopify-black);
    text-decoration: none;
    display: block;
}

.shopify-card-title:hover {
    text-decoration: underline;
    color: var(--shopify-black);
}

.shopify-card-price {
    font-size: 0.95rem;
    color: var(--shopify-dark-gray);
}

/* --- Cart Drawer (Slide-out) --- */
.cart-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.cart-drawer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.cart-drawer {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    max-width: 90%;
    height: 100%;
    background: #fff;
    z-index: 1050;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
}

.cart-drawer.active {
    right: 0;
}

.cart-drawer-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--shopify-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-drawer-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
}

.cart-drawer-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--shopify-dark-gray);
    transition: color 0.2s;
}

.cart-drawer-close:hover {
    color: var(--shopify-black);
}

.cart-drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.cart-drawer-item {
    display: flex;
    gap: 15px;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #f1f1f1;
    padding-bottom: 1.5rem;
}

.cart-drawer-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid #eee;
}

.cart-item-details {
    flex: 1;
}

.cart-item-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    display: block;
    color: var(--shopify-black);
    text-decoration: none;
}

.cart-item-price {
    font-size: 0.9rem;
    color: var(--shopify-dark-gray);
}

.cart-item-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.5rem;
}

.qty-selector-sm {
    display: flex;
    border: 1px solid var(--shopify-border);
    border-radius: 4px;
}

.qty-selector-sm button {
    background: none;
    border: none;
    padding: 2px 8px;
    cursor: pointer;
    color: var(--shopify-black);
}

.qty-selector-sm input {
    width: 30px;
    border: none;
    text-align: center;
    font-size: 0.85rem;
    padding: 0;
    -moz-appearance: textfield;
}

.cart-remove-btn {
    font-size: 0.8rem;
    color: var(--shopify-dark-gray);
    text-decoration: underline;
    cursor: pointer;
    background: none;
    border: none;
}

.cart-remove-btn:hover {
    color: var(--shopify-danger);
}

.cart-drawer-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--shopify-border);
    background: #f9f9f9;
}

.cart-subtotal {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.1rem;
}

/* --- Filters Sidebar (Index) --- */
.filter-sidebar {
    padding-right: 2rem;
}

.filter-section {
    margin-bottom: 2rem;
}

.filter-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.filter-list li {
    margin-bottom: 0.5rem;
}

.filter-link {
    color: var(--shopify-dark-gray);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.filter-link:hover, .filter-link.active {
    color: var(--shopify-black);
    font-weight: 500;
    text-decoration: underline;
}

/* --- Product Detail --- */
.pdp-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.pdp-price {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.pdp-description {
    line-height: 1.8;
    color: var(--shopify-dark-gray);
    margin-top: 2rem;
}

/* --- Input Group Fixes --- */
.input-group {
    display: flex !important;
    width: 100%;
    position: relative;
}

.input-group .form-control {
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
}

.input-group .btn {
    z-index: 2;
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
    margin-left: -1px; /* Align borders */
}