/* ============================================================
   论坛样式 - 完整版
   ============================================================ */

/* ============================================================
   1. 板块卡片（首页 SPA 用）
   ============================================================ */

.forum-section-card {
    background: white;
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    flex-shrink: 0;
}

.forum-section-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.forum-section-item {
    background: #f9fafb;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s ease;
}

.forum-section-item:active {
    transform: scale(0.98);
    background: #f3f4f6;
}

.forum-section-item .forum-section-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.forum-section-item .forum-section-icon.announcement { background: rgba(220, 38, 38, 0.10); color: #dc2626; }
.forum-section-item .forum-section-icon.discussion { background: rgba(37, 99, 235, 0.10); color: #2563eb; }
.forum-section-item .forum-section-icon.help { background: rgba(217, 119, 6, 0.10); color: #d97706; }
.forum-section-item .forum-section-icon.share { background: rgba(5, 150, 105, 0.10); color: #059669; }
.forum-section-item .forum-section-icon.dev { background: rgba(147, 51, 234, 0.10); color: #9333ea; }

.forum-section-item .forum-section-info {
    flex: 1;
    min-width: 0;
}

.forum-section-item .forum-section-name {
    font-size: 13px;
    font-weight: 500;
    color: #1f2937;
    line-height: 1.3;
}

.forum-section-item .forum-section-count {
    font-size: 10px;
    color: #9ca3af;
}

/* ============================================================
   2. 板块信息条（forum_posts.php 详情页专用）
   ============================================================ */

.section-info-bar {
    background: white;
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: center;
    gap: 14px;
}

.section-info-bar .icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.section-info-bar .icon.announcement { background: rgba(220, 38, 38, 0.10); color: #dc2626; }
.section-info-bar .icon.discussion { background: rgba(37, 99, 235, 0.10); color: #2563eb; }
.section-info-bar .icon.help { background: rgba(217, 119, 6, 0.10); color: #d97706; }
.section-info-bar .icon.share { background: rgba(5, 150, 105, 0.10); color: #059669; }
.section-info-bar .icon.dev { background: rgba(147, 51, 234, 0.10); color: #9333ea; }

.section-info-bar .info {
    flex: 1;
    min-width: 0;
}

.section-info-bar .info .desc {
    font-size: 13px;
    color: #6b7280;
    line-height: 1.4;
}

.section-info-bar .info .stats {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 3px;
    font-size: 12px;
    color: #9ca3af;
}

.section-info-bar .info .stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.section-info-bar .info .stats i {
    font-size: 11px;
    color: #9ca3af;
}

/* ============================================================
   3. Tab 卡片（保留用于兼容旧页面）
   ============================================================ */

.forum-tab-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

/* ============================================================
   4. 公告列表
   ============================================================ */

.forum-announcement-list {
    margin-bottom: 12px;
    flex-shrink: 0;
}

.forum-announcement-item {
    background: white;
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid #f0f0f0;
    margin-bottom: 6px;
}

.forum-announcement-item:last-child {
    margin-bottom: 0;
}

.forum-announcement-item:active {
    transform: scale(0.99);
}

.forum-announcement-icon {
    color: #dc2626;
    font-size: 14px;
    flex-shrink: 0;
}

.forum-announcement-title {
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.forum-announcement-meta {
    font-size: 11px;
    color: #9ca3af;
    flex-shrink: 0;
}

/* ============================================================
   5. 排序 Tab（板块详情页专用）
   ============================================================ */

.forum-sort-tabs {
    display: flex;
    gap: 4px;
    background: #ffffff;
    border-radius: 40px;
    padding: 3px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.forum-sort-tab {
    padding: 5px 14px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    color: #6b7280;
    background: transparent;
    border: none;
    transition: all 0.2s ease;
}

.forum-sort-tab.active {
    background: #2563EB;
    color: white;
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}

/* ============================================================
   6. 标签
   ============================================================ */

.forum-item-badge {
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 500;
    margin-right: 4px;
    flex-shrink: 0;
}

.forum-item-badge.sticky { background: rgba(220, 38, 38, 0.10); color: #dc2626; }
.forum-item-badge.essence { background: rgba(147, 51, 234, 0.10); color: #9333ea; }
.forum-item-badge.question { background: rgba(217, 119, 6, 0.10); color: #d97706; }
.forum-item-badge.solved { background: rgba(5, 150, 105, 0.10); color: #059669; }
.forum-item-badge.locked { background: rgba(107, 114, 128, 0.10); color: #6b7280; }

/* ============================================================
   7. 帖子详情
   ============================================================ */

.forum-detail-card {
    background: white;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    margin-bottom: 12px;
}

.forum-detail-card .author {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.forum-detail-card .author .avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
}

.forum-detail-card .author .info {
    flex: 1;
}

.forum-detail-card .author .info .name {
    font-weight: 600;
    font-size: 15px;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.forum-detail-card .author .info .time {
    font-size: 12px;
    color: #9ca3af;
    margin-top: 2px;
}

.forum-detail-card .title {
    font-size: 19px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 12px;
    line-height: 1.4;
}

.forum-detail-card .content {
    font-size: 15px;
    color: #4b5563;
    line-height: 1.8;
    white-space: pre-wrap;
    word-break: break-word;
}

.forum-detail-card .actions {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid #f3f4f6;
    flex-wrap: wrap;
}

.forum-detail-card .actions button {
    background: transparent;
    border: none;
    font-size: 13px;
    color: #6b7280;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.forum-detail-card .actions button:hover {
    background: #f3f4f6;
}

.forum-detail-card .actions button.liked {
    color: #ef4444;
}

.forum-detail-card .actions button.favorited {
    color: #f59e0b;
}

.forum-detail-card .resource-link {
    margin-top: 12px;
    padding: 10px 14px;
    background: #f8faff;
    border-radius: 10px;
    border: 1px solid #e0e7ff;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.forum-detail-card .resource-link:active {
    transform: scale(0.99);
}

.forum-detail-card .resource-link img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.forum-detail-card .resource-link .info {
    flex: 1;
    font-size: 13px;
    color: #1f2937;
}

.forum-admin-actions {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #f3f4f6;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.forum-admin-actions button {
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.forum-admin-actions button:active {
    transform: scale(0.97);
}

.forum-admin-actions .btn-primary {
    background: #dbeafe;
    color: #2563EB;
}

.forum-admin-actions .btn-danger {
    background: #fee2e2;
    color: #dc2626;
}

.forum-admin-actions .btn-warning {
    background: #fef3c7;
    color: #d97706;
}

/* ============================================================
   8. 回复
   ============================================================ */

.forum-reply-item {
    background: white;
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    margin-bottom: 8px;
    transition: all 0.2s ease;
}

.forum-reply-item .author {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.forum-reply-item .author .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.forum-reply-item .author .name {
    font-weight: 600;
    font-size: 13px;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.forum-reply-item .author .time {
    font-size: 11px;
    color: #9ca3af;
    margin-left: auto;
}

.forum-reply-item .content {
    font-size: 14px;
    color: #4b5563;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.forum-reply-item .actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #f5f5f5;
    flex-wrap: wrap;
}

.forum-reply-item .actions button {
    background: transparent;
    border: none;
    font-size: 12px;
    color: #9ca3af;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 2px 6px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.forum-reply-item .actions button:hover {
    background: #f3f4f6;
}

.forum-reply-item .actions button.liked {
    color: #ef4444;
}

.forum-reply-item .actions .accept-btn {
    color: #059669;
    font-weight: 500;
}

.forum-reply-item.accepted {
    background: #f0fdf4;
    box-shadow: 0 1px 4px rgba(16, 185, 129, 0.10);
}

.forum-reply-item .accepted-badge {
    font-size: 11px;
    padding: 1px 10px;
    border-radius: 12px;
    background: #10b981;
    color: white;
    font-weight: 500;
}

.forum-reply-item .children {
    margin-left: 42px;
    margin-top: 10px;
    padding-left: 12px;
    border-left: 2px solid #e5e7eb;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.forum-reply-item .children .forum-reply-item {
    background: #fafafa;
    box-shadow: none;
    margin-bottom: 0;
}

/* ============================================================
   9. 回复输入框
   ============================================================ */

.forum-reply-input {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid #f3f4f6;
    padding: 10px 16px;
    display: flex;
    gap: 10px;
    align-items: center;
    z-index: 100;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.03);
}

.forum-reply-input textarea {
    flex: 1;
    border: 1px solid #e5e7eb;
    border-radius: 24px;
    padding: 10px 16px;
    font-size: 14px;
    resize: none;
    font-family: inherit;
    min-height: 44px;
    max-height: 120px;
    outline: none;
    transition: border-color 0.2s ease;
}

.forum-reply-input textarea:focus {
    border-color: #2563EB;
}

.forum-reply-input .send-btn {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border: none;
    border-radius: 24px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
    transition: all 0.2s ease;
}

.forum-reply-input .send-btn:active {
    transform: scale(0.96);
}

.forum-reply-input .send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.forum-sub-reply-hint {
    font-size: 12px;
    color: #2563EB;
    background: #eff6ff;
    padding: 4px 12px;
    border-radius: 20px;
    flex-shrink: 0;
    cursor: pointer;
    display: none;
}

.forum-sub-reply-hint .cancel {
    color: #9ca3af;
    margin-left: 6px;
}

.forum-sub-reply-hint .cancel:hover {
    color: #ef4444;
}

/* ============================================================
   10. 动态流列表（SPA 首页用）- 修复左右边距
   ============================================================ */

.forum-feed-list {
    padding: 8px 0 20px 0;
    gap: 8px;
    display: flex;
    flex-direction: column;
}

.forum-feed-item {
    display: block;
    padding: 14px 16px;
    cursor: pointer;
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    border: 1px solid #f0f0f0;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

.forum-feed-item:active {
    transform: scale(0.99);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.forum-feed-item .feed-title {
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 6px;
    flex-wrap: wrap;
}

.forum-feed-item .feed-title .title-text {
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.forum-feed-item .feed-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
    font-size: 12px;
    color: #9ca3af;
    flex-wrap: wrap;
}

.forum-feed-item .feed-meta .meta-tag {
    color: #2563EB;
    background: rgba(37, 99, 235, 0.06);
    padding: 0 8px;
    border-radius: 4px;
    font-weight: 500;
}

.forum-feed-item .feed-meta .meta-time {
    margin-left: auto;
    color: #9ca3af;
    flex-shrink: 0;
}

/* ============================================================
   11. 板块标签
   ============================================================ */

.forum-section-tabs-wrapper {
    background: white;
    border-radius: 40px;
    padding: 4px;
    margin-bottom: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.forum-section-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 4px;
    min-width: max-content;
    padding: 0 2px;
}

.forum-section-tab {
    flex: 0 0 auto;
    text-align: center;
    padding: 6px 16px;
    background: transparent;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #6b7280;
    border: none;
    font-family: inherit;
}

.forum-section-tab.active {
    background: #2563EB;
    color: white;
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
}

.forum-section-tab:active {
    transform: scale(0.95);
}

/* ============================================================
   12. 论坛专属：吸顶 Tab 导航（横向铺满）
   ============================================================ */

.forum-filter-sticky .filter-bar {
    padding: 0;
}

.forum-tab-nav {
    display: flex;
    justify-content: space-around;
    gap: 0;
    padding: 0 0;
    background: #f5f7fb;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.forum-tab-item {
    position: relative;
    flex: 1;
    text-align: center;
    padding: 10px 0 8px 0;
    font-size: 14px;
    font-weight: 500;
    color: #9ca3af;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s ease;
    font-family: inherit;
}

.forum-tab-item:active {
    transform: scale(0.96);
}

.forum-tab-item.active {
    color: #2563EB;
    font-weight: 600;
}

.forum-tab-item.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 20px;
    height: 2.5px;
    background: #2563EB;
    border-radius: 2px;
    transition: all 0.25s ease;
}

/* ---------- 移除旧 Tab 卡片外层 ---------- */
.forum-tab-card {
    background: transparent;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
    margin: 0;
}

/* ============================================================
   13. 响应式
   ============================================================ */

/* ---------- 小屏手机（< 480px） ---------- */
@media (max-width: 480px) {
    .forum-section-card {
        padding: 10px 12px;
    }
    .forum-section-grid {
        gap: 5px;
    }
    .forum-section-item {
        padding: 6px 10px;
        gap: 8px;
    }
    .forum-section-item .forum-section-icon {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    .forum-section-item .forum-section-name {
        font-size: 12px;
    }
    .forum-section-item .forum-section-count {
        font-size: 9px;
    }

    .section-info-bar {
        padding: 10px 12px;
        gap: 10px;
    }
    .section-info-bar .icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
    .section-info-bar .info .desc {
        font-size: 12px;
    }
    .section-info-bar .info .stats {
        font-size: 11px;
        gap: 10px;
    }

    .forum-detail-card {
        padding: 14px;
    }
    .forum-detail-card .title {
        font-size: 17px;
    }
    .forum-detail-card .content {
        font-size: 14px;
    }

    .forum-reply-item {
        padding: 12px 14px;
    }
    .forum-reply-item .children {
        margin-left: 28px;
    }

    .forum-reply-input {
        padding: 8px 12px;
    }
    .forum-reply-input textarea {
        font-size: 13px;
        padding: 8px 14px;
    }
    .forum-reply-input .send-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .forum-section-tab {
        font-size: 11px;
        padding: 5px 12px;
    }

    /* 论坛吸顶 + Tab（横向铺满） */
    .forum-tab-nav {
        gap: 0;
        padding: 0 0;
    }
    .forum-tab-item {
        font-size: 13px;
        padding: 8px 0 6px 0;
    }
    .forum-tab-item.active::after {
        width: 16px;
        height: 2px;
    }

    .forum-feed-list {
        padding: 6px 0 16px 0;
        gap: 6px;
    }
    .forum-feed-item {
        padding: 12px 14px;
        border-radius: 10px;
    }
    .forum-feed-item .feed-title {
        font-size: 13px;
    }
    .forum-feed-item .feed-meta {
        font-size: 11px;
        gap: 8px;
    }
}

/* ---------- 极小屏（< 380px） ---------- */
@media (max-width: 380px) {
    .forum-tab-nav {
        gap: 0;
        padding: 0 0;
    }
    .forum-tab-item {
        font-size: 12px;
        padding: 6px 0 4px 0;
    }
    .forum-tab-item.active::after {
        width: 14px;
        height: 2px;
    }
    .forum-feed-list {
        padding: 4px 0 12px 0;
        gap: 4px;
    }
    .forum-feed-item {
        padding: 10px 12px;
    }
    .forum-feed-item .feed-title {
        font-size: 12px;
    }
}

/* ---------- 中屏手机（481-767px） ---------- */
@media (min-width: 481px) and (max-width: 767px) {
    .forum-section-grid {
        gap: 7px;
    }
    .forum-tab-nav {
        gap: 0;
        padding: 0 0;
    }
}

/* ---------- 平板（768px 以上） ---------- */
@media (min-width: 768px) {
    .forum-section-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    .forum-section-card {
        padding: 14px 16px;
    }
    .forum-section-item .forum-section-name {
        font-size: 14px;
    }

    .section-info-bar {
        padding: 14px 18px;
    }

    .forum-detail-card {
        padding: 20px;
    }

    .forum-section-tab {
        padding: 8px 24px;
        font-size: 13px;
    }

    .forum-tab-nav {
        gap: 0;
        padding: 0 0;
    }
}

/* ---------- 桌面（1024px 以上） ---------- */
@media (min-width: 1024px) {
    .forum-section-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1400px) {
    .forum-section-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}