/* 主布局 */
.main-layout { display: flex; gap: 24px; padding: 24px 20px; align-items: flex-start; position: relative; z-index: 1; }
.content { flex: 1; min-width: 0; }
.sidebar { width: 280px; flex-shrink: 0; display: flex; flex-direction: column; gap: 20px; }

/* 分类筛选 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.filter-item {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    background: rgba(30, 27, 75, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(138, 43, 226, 0.3);
    color: #b8b8d0;
    transition: all 0.3s;
}
.filter-item:hover {
    border-color: #a78bfa;
    color: #a78bfa;
    box-shadow: 0 0 15px rgba(138, 43, 226, 0.3);
}
.filter-item.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 0 20px rgba(138, 43, 226, 0.5);
}

/* 文章卡片 */
.article-card {
    background: rgba(30, 27, 75, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 22px 24px;
    margin-bottom: 16px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s;
    border: 1px solid rgba(138, 43, 226, 0.2);
    position: relative;
    overflow: hidden;
}
.article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(138, 43, 226, 0.1), transparent);
    transition: left 0.5s;
}
.article-card:hover::before {
    left: 100%;
}
.article-card:hover {
    box-shadow: 0 8px 30px rgba(138, 43, 226, 0.4), 0 0 20px rgba(138, 43, 226, 0.2);
    transform: translateY(-4px);
    border-color: #a78bfa;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: #8b8ba0; margin-bottom: 10px; }
.meta-category {
    background: rgba(138, 43, 226, 0.2);
    color: #a78bfa;
    padding: 1px 8px;
    border-radius: 10px;
    border: 1px solid rgba(138, 43, 226, 0.3);
}
.article-title {
    font-size: 18px;
    font-weight: 600;
    color: #e8e8f0;
    margin-bottom: 10px;
    line-height: 1.4;
    transition: all 0.3s;
}
.article-card:hover .article-title {
    color: #a78bfa;
    text-shadow: 0 0 10px rgba(138, 43, 226, 0.5);
}
.article-summary {
    font-size: 14px;
    color: #b8b8d0;
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 4px; }

/* 侧边栏组件 */
.widget {
    background: rgba(30, 27, 75, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 18px 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(138, 43, 226, 0.2);
}
.widget-title {
    font-size: 15px;
    font-weight: 600;
    color: #e8e8f0;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(138, 43, 226, 0.3);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hot-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    cursor: pointer;
    border-bottom: 1px solid rgba(138, 43, 226, 0.1);
    transition: all 0.3s;
}
.hot-item:last-child { border-bottom: none; }
.hot-item:hover {
    transform: translateX(5px);
}
.hot-item:hover .hot-title {
    color: #a78bfa;
    text-shadow: 0 0 10px rgba(138, 43, 226, 0.3);
}
.hot-rank {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(138, 43, 226, 0.3);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.hot-rank.rank-1 {
    background: transparent;
    box-shadow: none;
}
.hot-rank.rank-2 {
    background: transparent;
    box-shadow: none;
}
.hot-rank.rank-3 {
    background: transparent;
    box-shadow: none;
}
.hot-title {
    font-size: 13px;
    color: #b8b8d0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all 0.3s;
}
.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }