/**
 * 前端筛选器样式
 * 设计参考截图中的深色背景筛选区域
 */

/* ===== 筛选器容器 ===== */
.kpf-filter-container {
    background-color: #1a1a2e;
    padding: 24px 28px;
    border-radius: 4px;
    margin-bottom: 30px;
}

.kpf-filter-form {
    width: 100%;
}

/* ===== 四列下拉框行 ===== */
.kpf-filter-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    align-items: end;
}

/* ===== 单个字段 ===== */
.kpf-filter-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.kpf-filter-field label {
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
    margin: 0;
    padding: 0;
}

/* ===== 下拉选择框 ===== */
.kpf-select {
    width: 100%;
    padding: 9px 32px 9px 12px;
    background-color: #ffffff;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 14px;
    color: #333;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M6 8L0 0h12z' fill='%23666'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color 0.2s, box-shadow 0.2s;
    height: 40px;
}

.kpf-select:focus {
    outline: none;
    border-color: #e6b800;
    box-shadow: 0 0 0 2px rgba(230,184,0,0.2);
}

.kpf-select:disabled {
    background-color: #f0f0f0;
    color: #999;
    cursor: not-allowed;
    opacity: 0.7;
}

/* 下拉框加载状态 */
.kpf-select.kpf-loading {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 50 50'%3E%3Ccircle cx='25' cy='25' r='20' fill='none' stroke='%23666' stroke-width='5' stroke-dasharray='31.4 31.4' transform='rotate(-90 25 25)'%3E%3CanimateTransform attributeName='transform' type='rotate' from='0 25 25' to='360 25 25' dur='0.8s' repeatCount='indefinite'/%3E%3C/circle%3E%3C/svg%3E");
    background-size: 16px;
}

/* ===== 按钮区域 ===== */
.kpf-filter-buttons {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.kpf-btn {
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.2s;
}

/* 重置按钮 */
.kpf-btn-reset {
    background-color: #ffffff;
    color: #1a1a2e;
    border: 1px solid #ffffff;
}

.kpf-btn-reset:hover {
    background-color: #f0f0f0;
}

/* 搜索按钮 */
.kpf-btn-search {
    background-color: #1a1a2e;
    color: #ffffff;
    border: 1px solid #ffffff;
}

.kpf-btn-search:hover {
    background-color: #e6b800;
    color: #1a1a2e;
    border-color: #e6b800;
}

/* ===== 未找到提示链接 ===== */
.kpf-not-found-link {
    margin-top: 12px;
    color: rgba(255,255,255,0.6);
    font-size: 12px;
}

.kpf-not-found-link .kpf-contact-link {
    color: #e63946;
    font-weight: 600;
    text-decoration: underline;
}

.kpf-not-found-link .kpf-contact-link:hover {
    color: #ff6b6b;
}

/* ===== 分类页内嵌模式 ===== */
.kpf-filter-archive {
    background-color: #1a1a2e;
    margin-bottom: 24px;
}

/* 当前筛选状态标题栏 */
.kpf-archive-filter-title {
    padding: 10px 0 0;
    margin-bottom: 12px;
}

.kpf-active-filter-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(230, 184, 0, 0.15);
    border: 1px solid rgba(230, 184, 0, 0.4);
    color: #e6b800;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    flex-wrap: wrap;
}

.kpf-active-filter-label strong {
    color: #ffffff;
    font-weight: 600;
}

/* ===== 搜索结果区域 ===== */
.kpf-results-container {
    margin-top: 30px;
}

.kpf-results-title {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 6px;
    text-transform: uppercase;
}

.kpf-results-summary {
    color: #555;
    font-size: 14px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid #f0f0f0;
}

.kpf-results-summary strong {
    color: #1a1a2e;
}

/* 无结果提示 */
.kpf-no-results {
    padding: 30px;
    text-align: center;
    color: #666;
    font-size: 15px;
    background: #f9f9f9;
    border-radius: 4px;
    border: 1px dashed #ddd;
}

/* ===== 产品网格（继承WooCommerce样式，添加少量补充） ===== */
.kpf-products-grid {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* 每行3列产品网格 */
.kpf-products-grid.columns-3 > li {
    width: calc(33.333% - 14px);
    margin: 0 !important;
    float: none !important;
}

/* 确保产品图片容器比例 */
.kpf-products-grid .woocommerce-loop-product__link img {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== 响应式布局 ===== */
@media (max-width: 1024px) {
    .kpf-filter-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .kpf-products-grid.columns-3 > li {
        width: calc(50% - 10px);
    }
}

@media (max-width: 600px) {
    .kpf-filter-container {
        padding: 16px;
    }

    .kpf-filter-row {
        grid-template-columns: 1fr;
    }

    .kpf-filter-buttons {
        flex-direction: column;
    }

    .kpf-btn {
        width: 100%;
        text-align: center;
    }

    .kpf-products-grid.columns-3 > li {
        width: 100%;
    }
}