/**
 * 团购大厅 - 前端样式
 * 子比主题风格兼容，响应式布局
 */

/* ========== 基础容器 ========== */
.knn-gbh-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ========== 页面头部 ========== */
.knn-gbh-header {
    text-align: center;
    padding: 40px 0 30px;
}

.knn-gbh-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--main-color, #333);
    margin: 0 0 10px;
}

.knn-gbh-desc {
    font-size: 14px;
    color: #999;
    margin: 0;
}

/* ========== 筛选栏 ========== */
.knn-gbh-filters {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding: 12px 20px;
    background: var(--main-bg-color, #fff);
    border-radius: 12px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

.knn-gbh-tabs {
    display: flex;
    gap: 4px;
}

.knn-gbh-tab {
    padding: 8px 20px;
    border: none;
    background: transparent;
    color: #666;
    font-size: 14px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s;
    font-weight: 500;
}

.knn-gbh-tab:hover {
    background: var(--focus-color-opacity1, rgba(0,150,136, 0.08));
    color: var(--focus-color, #009688);
}

.knn-gbh-tab.active {
    background: var(--focus-color, #009688);
    color: #fff;
}

.knn-gbh-sort-select {
    padding: 6px 12px;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    font-size: 13px;
    color: #666;
    background: var(--main-bg-color, #fff);
    cursor: pointer;
    outline: none;
}

.knn-gbh-sort-select:focus {
    border-color: var(--focus-color, #009688);
}

/* ========== 活动卡片网格 ========== */
.knn-gbh-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.knn-gbh-card {
    background: var(--main-bg-color, #fff);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.knn-gbh-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.knn-gbh-card-link {
    text-decoration: none;
    color: inherit;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 封面图 */
.knn-gbh-card-cover {
    position: relative;
    padding-top: 56.25%; /* 16:9 */
    overflow: hidden;
    background: #f5f5f5;
}

.knn-gbh-card-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.knn-gbh-card:hover .knn-gbh-card-cover img {
    transform: scale(1.05);
}

.knn-gbh-card-cover-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    font-size: 32px;
    background: #f5f5f5;
}

/* 类型标签 */
.knn-gbh-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    z-index: 1;
}

.knn-gbh-badge-shop {
    background: linear-gradient(135deg, #ee4d2d, #c0392b);
}

.knn-gbh-badge-article {
    background: linear-gradient(135deg, #11998e, #38ef7d);
}

.knn-gbh-groups-count {
    position: absolute;
    bottom: 10px;
    right: 10px;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    color: #fff;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
}

/* 信息区 */
.knn-gbh-card-info {
    padding: 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.knn-gbh-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--main-color, #333);
    margin: 0 0 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.knn-gbh-card-price {
    margin-bottom: 8px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.knn-gbh-price-original {
    font-size: 12px;
    color: #bbb;
    text-decoration: line-through;
}

.knn-gbh-price-group {
    font-size: 18px;
    font-weight: 700;
    color: #e74c3c;
}

.knn-gbh-card-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.knn-gbh-meta-item {
    font-size: 12px;
    color: #999;
}

.knn-gbh-meta-item i {
    margin-right: 3px;
}

.knn-gbh-card-countdown {
    font-size: 12px;
    color: #e74c3c;
    margin-top: auto;
}

.knn-gbh-card-countdown i {
    margin-right: 4px;
}

/* 操作按钮 */
.knn-gbh-card-action {
    padding: 0 14px 14px;
}

.knn-gbh-btn-join {
    display: block;
    text-align: center;
    padding: 10px;
    background: linear-gradient(135deg, var(--focus-color, #009688), var(--focus-color, #00796b));
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.3s;
}

.knn-gbh-btn-join:hover {
    opacity: 0.85;
    color: #fff;
}

/* ========== 拼团列表区 ========== */
.knn-gbh-section {
    margin-bottom: 30px;
}

.knn-gbh-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--main-color, #333);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--focus-color, #009688);
    display: flex;
    align-items: center;
    gap: 8px;
}

.knn-gbh-section-hint {
    font-size: 12px;
    color: #999;
    font-weight: 400;
    margin-left: auto;
}

.knn-gbh-groups {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.knn-gbh-group-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    background: var(--main-bg-color, #fff);
    border-radius: 12px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.05);
    transition: box-shadow 0.3s;
}

.knn-gbh-group-row:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

/* 缩略图 */
.knn-gbh-group-cover {
    width: 56px;
    height: 56px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
    background: #f5f5f5;
}

.knn-gbh-group-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.knn-gbh-group-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    font-size: 18px;
}

/* 信息 */
.knn-gbh-group-info {
    flex: 1;
    min-width: 0;
}

.knn-gbh-group-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--main-color, #333);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.knn-gbh-badge-small {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 10px;
    color: #fff;
    vertical-align: middle;
    margin-right: 4px;
}

.knn-gbh-group-meta {
    font-size: 12px;
}

.knn-gbh-group-price {
    color: #e74c3c;
    font-weight: 600;
}

/* 团长 */
.knn-gbh-group-leader {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.knn-gbh-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.knn-gbh-leader-name {
    font-size: 12px;
    color: #666;
    max-width: 60px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 进度条 */
.knn-gbh-group-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    min-width: 120px;
}

.knn-gbh-progress-bar {
    flex: 1;
    height: 6px;
    background: #eee;
    border-radius: 3px;
    overflow: hidden;
}

.knn-gbh-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--focus-color, #009688), #38ef7d);
    border-radius: 3px;
    transition: width 0.5s;
}

.knn-gbh-progress-text {
    font-size: 12px;
    color: #666;
    white-space: nowrap;
}

/* 倒计时 */
.knn-gbh-group-countdown {
    font-size: 12px;
    color: #e74c3c;
    flex-shrink: 0;
    min-width: 80px;
    text-align: center;
}

/* 参团按钮 */
.knn-gbh-group-action {
    flex-shrink: 0;
}

.knn-gbh-btn-join-small {
    display: inline-block;
    padding: 6px 18px;
    background: var(--focus-color, #009688);
    color: #fff;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: opacity 0.3s;
}

.knn-gbh-btn-join-small:hover {
    opacity: 0.85;
    color: #fff;
}

/* ========== 空状态 ========== */
.knn-gbh-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #ccc;
}

.knn-gbh-empty i {
    font-size: 48px;
    margin-bottom: 12px;
    display: block;
}

.knn-gbh-empty p {
    font-size: 14px;
    margin: 0;
}

/* ========== 加载更多 ========== */
.knn-gbh-pagination {
    text-align: center;
    padding: 20px 0;
}

.knn-gbh-load-more {
    padding: 10px 40px;
    border: 1px solid #e5e5e5;
    background: var(--main-bg-color, #fff);
    color: #666;
    border-radius: 24px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.knn-gbh-load-more:hover {
    border-color: var(--focus-color, #009688);
    color: var(--focus-color, #009688);
}

.knn-gbh-load-more:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.knn-gbh-load-more i {
    margin-left: 4px;
}

/* ========== 加载动画 ========== */
.knn-gbh-loading {
    text-align: center;
    padding: 30px;
    color: #999;
}

.knn-gbh-loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ddd;
    border-top-color: var(--focus-color, #009688);
    border-radius: 50%;
    animation: knn-gbh-spin 0.8s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes knn-gbh-spin {
    to { transform: rotate(360deg); }
}

/* ========== 响应式 ========== */
@media (max-width: 1199px) {
    .knn-gbh-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {
    .knn-gbh-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .knn-gbh-header {
        padding: 24px 0 20px;
    }

    .knn-gbh-title {
        font-size: 22px;
    }

    .knn-gbh-filters {
        flex-direction: column;
        gap: 10px;
        padding: 12px;
    }

    .knn-gbh-tabs {
        width: 100%;
        justify-content: center;
    }

    .knn-gbh-tab {
        padding: 6px 14px;
        font-size: 13px;
    }

    .knn-gbh-sort {
        width: 100%;
    }

    .knn-gbh-sort-select {
        width: 100%;
    }

    /* 拼团列表转垂直布局 */
    .knn-gbh-group-row {
        flex-wrap: wrap;
        gap: 10px;
        padding: 12px;
    }

    .knn-gbh-group-info {
        flex: 1 1 calc(100% - 72px);
    }

    .knn-gbh-group-leader,
    .knn-gbh-group-progress,
    .knn-gbh-group-countdown {
        min-width: 0;
    }

    .knn-gbh-group-progress {
        flex: 1;
        min-width: 80px;
    }

    .knn-gbh-price-group {
        font-size: 16px;
    }
}

@media (max-width: 479px) {
    .knn-gbh-cards {
        grid-template-columns: 1fr;
    }

    .knn-gbh-group-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .knn-gbh-group-cover {
        width: 100%;
        height: 120px;
    }

    .knn-gbh-group-progress {
        width: 100%;
    }

    .knn-gbh-group-action {
        width: 100%;
    }

    .knn-gbh-btn-join-small {
        display: block;
        text-align: center;
        width: 100%;
        padding: 10px;
    }
}

/* ========== 暗色模式 ========== */
body.dark-theme .knn-gbh-card,
body.dark-theme .knn-gbh-filters,
body.dark-theme .knn-gbh-group-row {
    background: var(--main-bg-color, #1e1e1e);
}

body.dark-theme .knn-gbh-sort-select {
    background: var(--main-bg-color, #1e1e1e);
    border-color: #444;
    color: #ccc;
}

body.dark-theme .knn-gbh-tab {
    color: #aaa;
}

body.dark-theme .knn-gbh-tab.active {
    color: #fff;
}

body.dark-theme .knn-gbh-card-title,
body.dark-theme .knn-gbh-group-title {
    color: #e0e0e0;
}

body.dark-theme .knn-gbh-load-more {
    background: #2a2a2a;
    border-color: #444;
    color: #aaa;
}

body.dark-theme .knn-gbh-progress-bar {
    background: #333;
}

/* 立即开团按钮 */
body.dark-theme .knn-gbh-btn-join {
    background: linear-gradient(135deg, var(--focus-color, #009688), var(--focus-color, #00796b)) !important;
    color: #fff !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

body.dark-theme .knn-gbh-btn-join:hover {
    color: #fff !important;
}

/* 参团按钮 */
body.dark-theme .knn-gbh-btn-join-small {
    background: var(--focus-color, #009688) !important;
    color: #fff !important;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

body.dark-theme .knn-gbh-btn-join-small:hover {
    color: #fff !important;
}

/* 加载更多按钮 hover */
body.dark-theme .knn-gbh-load-more:hover {
    border-color: var(--focus-color, #009688);
    color: var(--focus-color, #009688);
}

/* 封面占位符 */
body.dark-theme .knn-gbh-card-cover-placeholder,
body.dark-theme .knn-gbh-group-cover {
    background: #2a2a2a;
}