/* ==========================================================================
   去AI化设计：采用严谨、高对比度的瑞士现代主义排版与标准电商交易架构
   ========================================================================== */

:root {
    --bg-color: #fdfcf7;        /* 质感高雅的出版物米白色 */
    --text-color: #111111;      /* 纯粹重色，杜绝虚浮灰色 */
    --border-color: #111111;    /* 实体线条边框，增强结构感 */
    --accent-color: #bc4749;    /* 经典黑胶唱片标贴常用的复古红 */
    --card-bg: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
}

/* 顶部通知栏 */
.promo-bar {
    background-color: var(--text-color);
    color: var(--bg-color);
    text-align: center;
    padding: 8px 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
}

/* 导航栏 */
.main-header {
    background-color: var(--bg-color);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 90;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-size: 24px;
    font-weight: 900;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.brand-logo span {
    color: var(--accent-color);
}

/* 搜索框 */
.search-wrapper {
    position: relative;
    width: 40%;
    max-width: 500px;
}

#searchInput {
    width: 100%;
    padding: 10px 15px;
    padding-right: 40px;
    border: 2px solid var(--border-color);
    background-color: #fff;
    font-size: 14px;
    outline: none;
    border-radius: 0; /* 纯方角，去AI圆角感 */
}

.search-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 14px;
}

/* 购物车按钮 */
.cart-toggle-btn {
    background-color: var(--text-color);
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border-radius: 0;
    transition: background-color 0.2s;
}

.cart-toggle-btn:hover {
    background-color: var(--accent-color);
}

/* 店铺主容器 */
.store-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 工具栏 */
.store-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #ddd;
    padding-bottom: 15px;
    margin-bottom: 30px;
}

.results-count {
    font-size: 14px;
    color: #666;
}

#itemsCount {
    font-weight: bold;
    color: var(--text-color);
}

.toolbar-right select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background-color: #fff;
    font-size: 13px;
    margin-left: 10px;
    outline: none;
    border-radius: 0;
}

/* 商品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

/* 实体的、非结构模糊的商品卡片结构 */
.product-card {
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
}

.product-image-box {
    position: relative;
    width: 100%;
    padding-top: 100%; /* 1:1 绝对正方形，黑胶规格包装标准 */
    background-color: #e5e5e5;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.placeholder-vinyl-art {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
}

/* 为每种流派定制低饱和度实体工业原色 */
.art-jazz { background-color: #d1e2e9; color: #2b4c59; }
.art-rock { background-color: #ebd4d4; color: #6e2c2c; }
.art-electronic { background-color: #decbe4; color: #50315c; }
.art-hiphop { background-color: #e3ebd4; color: #435427; }

.art-artist {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.art-title {
    font-size: 18px;
    font-weight: 900;
    line-height: 1.2;
}

.product-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: var(--text-color);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 4px 8px;
    letter-spacing: 0.5px;
}

.product-details {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-meta {
    font-size: 11px;
    font-weight: 600;
    color: #777;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.product-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 2px;
}

.product-artist {
    font-size: 14px;
    color: #555;
    margin-bottom: 15px;
}

.product-footer-row {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    font-size: 18px;
    font-weight: 900;
    color: var(--text-color);
}

.add-to-cart-btn {
    background-color: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    border-radius: 0;
    transition: all 0.2s;
}

.add-to-cart-btn:hover {
    background-color: var(--text-color);
    color: #fff;
}

/* 购物车侧边栏系统 */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px; /* 默认隐藏 */
    width: 400px;
    height: 100%;
    background-color: #fff;
    box-shadow: -5px 0 30px rgba(0,0,0,0.15);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    border-left: 2px solid var(--border-color);
}

.cart-sidebar.open {
    right: 0;
}

.cart-sidebar-header {
    padding: 20px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-sidebar-header h3 {
    font-size: 18px;
    font-weight: 800;
}

.close-cart-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-color);
}

.cart-items-list {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
}

.empty-cart-msg {
    text-align: center;
    color: #888;
    margin-top: 40px;
    font-size: 14px;
}

/* 购物车具体商品行 */
.cart-item {
    display: flex;
    justify-content: space-between;
    padding-bottom: 15px;
    margin-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.cart-item-info {
    flex-grow: 1;
    padding-right: 15px;
}

.cart-item-title {
    font-size: 14px;
    font-weight: 700;
}

.cart-item-artist {
    font-size: 12px;
    color: #666;
    margin-bottom: 5px;
}

.cart-item-qty-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qty-btn {
    background: none;
    border: 1px solid var(--border-color);
    width: 22px;
    height: 22px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cart-item-qty {
    font-size: 13px;
    font-weight: 600;
}

.cart-item-right {
    text-align: right;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.cart-item-price {
    font-size: 14px;
    font-weight: 800;
}

.remove-item-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 12px;
    cursor: pointer;
    text-decoration: underline;
}

/* 结算区域 */
.cart-sidebar-footer {
    padding: 20px;
    border-top: 2px solid var(--border-color);
    background-color: var(--bg-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
}

.total-row {
    margin-top: 15px;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 900;
    border-top: 1px dashed var(--border-color);
    padding-top: 15px;
}

.checkout-btn {
    width: 100%;
    background-color: var(--text-color);
    color: #fff;
    border: none;
    padding: 15px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 0;
}

.checkout-btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

/* 遮罩层 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.4);
    z-index: 95;
    display: none;
}

.sidebar-overlay.active {
    display: block;
}

/* 页脚 */
.store-footer {
    border-top: 2px solid var(--border-color);
    background-color: #fff;
    padding: 40px 20px;
    margin-top: 60px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    color: #505050;
    letter-spacing: 0.5px;
}

.domain-tag {
    font-family: monospace;
    font-size: 13px;
    color: var(--accent-color);
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }
    .search-wrapper {
        width: 100%;
    }
    .store-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    .toolbar-right {
        width: 100%;
        display: flex;
        gap: 10px;
    }
    .toolbar-right select {
        margin-left: 0;
        flex: 1;
    }
    .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}