/* =====================
   玩法论坛主容器
   ===================== */
.forum-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 120px 1.5rem 4rem;
}

.forum-page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.forum-page-header h1 {
    font-size: 2.2rem;
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.forum-page-header .subtitle {
    color: var(--gray);
    font-size: 1rem;
}

.forum-page-header .divider {
    width: 40px;
    height: 3px;
    background: var(--primary);
    margin: 1rem auto;
    border-radius: 2px;
}

/* =====================
   版块组（大分类标题）
   ===================== */
.forum-group {
    margin-bottom: 2.5rem;
}

.forum-group-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gray);
    font-weight: 600;
    padding: 0 0 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 0;
}

/* =====================
   论坛版块行
   ===================== */
.forum-table {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.forum-row {
    display: grid;
    grid-template-columns: 52px 1fr 120px 120px;
    align-items: center;
    padding: 0;
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
    text-decoration: none;
    color: inherit;
}

.forum-row:last-child {
    border-bottom: none;
}

.forum-row:hover {
    background: #f8faff;
}

/* 图标列 */
.forum-row-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 100%;
    padding: 1.25rem 0;
    color: var(--primary);
    font-size: 1.4rem;
}

/* 版块名+描述列 */
.forum-row-info {
    padding: 1.25rem 1rem;
    min-width: 0;
}

.forum-row-info .board-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.forum-row-info .board-desc {
    font-size: 0.8rem;
    color: var(--gray);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 帖子数列 */
.forum-row-stats {
    text-align: center;
    padding: 1.25rem 0.5rem;
    border-left: 1px solid var(--border);
}

.forum-row-stats .stat-num {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
}

.forum-row-stats .stat-label {
    font-size: 0.72rem;
    color: var(--gray);
    margin-top: 0.25rem;
}

/* 最新帖子列 */
.forum-row-latest {
    text-align: left;
    padding: 1.25rem 1rem;
    border-left: 1px solid var(--border);
    min-width: 0;
}

.forum-row-latest .latest-title {
    font-size: 0.82rem;
    color: var(--dark);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.2rem;
}

.forum-row-latest .latest-time {
    font-size: 0.72rem;
    color: var(--gray);
}

/* 表头 */
.forum-header-row {
    display: grid;
    grid-template-columns: 52px 1fr 120px 120px;
    background: var(--gray-bg);
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.forum-header-row span {
    padding: 0.6rem 1rem;
}

.forum-header-row span:first-child {
    text-align: center;
}

.forum-header-row span:nth-child(3),
.forum-header-row span:nth-child(4) {
    text-align: center;
    border-left: 1px solid var(--border);
}

/* 空状态 */
.forum-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--gray);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.forum-empty i {
    font-size: 3rem;
    opacity: 0.3;
    margin-bottom: 1rem;
    display: block;
}

.forum-empty a {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.6rem 1.5rem;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 0.875rem;
    text-decoration: none;
    transition: var(--transition);
}

.forum-empty a:hover {
    opacity: 0.85;
}

/* 管理员添加按钮 */
.forum-admin-bar {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.btn-add-board,
.btn-add-article {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.1rem;
    border-radius: var(--radius);
    font-size: 0.82rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.btn-add-board {
    background: var(--primary);
    color: var(--white);
}

.btn-add-board:hover {
    opacity: 0.85;
    color: var(--white);
}

.btn-add-article {
    background: var(--white);
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-add-article:hover {
    background: var(--primary);
    color: var(--white);
}

/* 响应式 */
@media (max-width: 640px) {
    .forum-row,
    .forum-header-row {
        grid-template-columns: 44px 1fr 70px;
    }
    
    .forum-row-latest,
    .forum-header-row span:nth-child(4) {
        display: none;
    }
    
    .forum-row-icon {
        width: 44px;
        font-size: 1.1rem;
    }
}