/* =========================================================
   健康问答 - 专属样式
   ========================================================= */

/* ========== 页面头部 Banner ========== */
.qa-hero {
    background: var(--gradient-hero);
    padding: 70px 0 90px;
    position: relative;
    overflow: hidden;
}
.qa-hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(201,169,97,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.qa-hero::after {
    content: '';
    position: absolute;
    bottom: -30%; left: -5%;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(181,72,90,0.2) 0%, transparent 70%);
    border-radius: 50%;
}
.qa-hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
}
.qa-hero .eyebrow {
    display: inline-block;
    padding: 6px 20px;
    border: 1px solid rgba(201, 169, 97, 0.5);
    border-radius: var(--radius-full);
    color: var(--color-accent-light);
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: var(--space-md);
}
.qa-hero h1 {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.qa-hero h1 em {
    font-style: normal;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.qa-hero p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    max-width: 560px;
    margin: 0 auto;
}

/* 搜索框 */
.qa-search {
    max-width: 600px;
    margin: 36px auto 0;
    display: flex;
    gap: 12px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 8px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(201, 169, 97, 0.25);
}
.qa-search input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 15px;
    padding: 12px 20px;
    font-family: inherit;
}
.qa-search input::placeholder { color: rgba(255,255,255,0.5); }
.qa-search button {
    background: var(--gradient-gold);
    color: var(--color-bg-dark);
    border: none;
    padding: 12px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    font-size: 15px;
    transition: transform .2s;
}
.qa-search button:hover { transform: scale(1.03); }

/* ========== 主内容区 ========== */
.qa-main {
    max-width: var(--container-max);
    margin: -50px auto 0;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--space-lg);
}

/* ========== 问答列表 ========== */
.qa-list-section {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-lg);
}
.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border-light);
}
.section-title .bar {
    width: 4px; height: 22px;
    background: var(--gradient-gold);
    border-radius: 2px;
}
.section-title h2 {
    font-family: var(--font-serif);
    font-size: 22px;
    color: var(--color-text);
}
.section-title .count {
    margin-left: auto;
    color: var(--color-text-muted);
    font-size: 13px;
}

.qa-item {
    padding: var(--space-md) 0;
    border-bottom: 1px dashed var(--color-border-light);
    transition: padding .2s;
    cursor: pointer;
}
.qa-item:last-child { border-bottom: none; }
.qa-item:hover { padding-left: 12px; }
.qa-item-head {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 10px;
}
.qa-q-icon {
    flex-shrink: 0;
    width: 28px; height: 28px;
    border-radius: 8px;
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    font-family: var(--font-serif);
}
.qa-q-title {
    flex: 1;
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.5;
    transition: color .2s;
}
.qa-item:hover .qa-q-title { color: var(--color-accent-light); }
.qa-q-date {
    flex-shrink: 0;
    text-align: right;
    font-size: 13px;
    color: var(--color-text-muted);
}
.qa-q-date .d { font-size: 16px; font-weight: 600; color: var(--color-accent-light); font-family: var(--font-serif); }
.qa-q-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 13px;
    color: var(--color-text-muted);
    margin-left: 40px;
    flex-wrap: wrap;
}
.qa-q-meta .meta-item { display: flex; align-items: center; gap: 4px; }
.qa-q-meta .divider { color: var(--color-border); }

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}
.page-btn {
    min-width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-card);
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 14px;
    transition: all .2s;
    font-family: inherit;
}
.page-btn:hover { border-color: var(--color-accent); color: var(--color-accent-light); }
.page-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
}
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ========== 侧边栏 ========== */
.qa-sidebar { display: flex; flex-direction: column; gap: var(--space-lg); }
.side-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-md);
    overflow: hidden;
}
.side-card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--space-md);
}
.side-card-title .icon {
    width: 32px; height: 32px;
    border-radius: 10px;
    background: var(--gradient-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-dark);
    font-size: 16px;
}
.side-card-title h3 {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-text);
}

.hot-list { list-style: none; counter-reset: hot; }
.hot-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: padding .2s;
}
.hot-item:last-child { border-bottom: none; }
.hot-item:hover { padding-left: 6px; }
.hot-item::before {
    counter-increment: hot;
    content: counter(hot);
    flex-shrink: 0;
    width: 22px; height: 22px;
    border-radius: 6px;
    background: var(--color-bg-soft);
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    margin-top: 2px;
}
.hot-item:nth-child(1)::before { background: var(--gradient-primary); color: #fff; }
.hot-item:nth-child(2)::before { background: var(--color-primary-light); color: #fff; }
.hot-item:nth-child(3)::before { background: var(--color-accent); color: #fff; }
.hot-item .hot-text {
    flex: 1;
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.hot-item:hover .hot-text { color: var(--color-accent-light); }
.hot-item .hot-views {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* 广告位 */
.ad-box {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.ad-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(201,169,97,0.3), transparent 50%);
}
.ad-box .ad-tag {
    display: inline-block;
    padding: 3px 14px;
    background: rgba(201,169,97,0.25);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--color-accent-light);
    margin-bottom: 12px;
    position: relative;
}
.ad-box h4 {
    font-family: var(--font-serif);
    font-size: 20px;
    margin-bottom: 10px;
    position: relative;
}
.ad-box p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 16px;
    position: relative;
}
.ad-box .ad-btn {
    display: inline-block;
    padding: 9px 26px;
    background: var(--gradient-gold);
    color: var(--color-bg-dark);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 14px;
    position: relative;
    transition: transform .2s;
}
.ad-box .ad-btn:hover { transform: scale(1.05); color: var(--color-bg-dark); }

/* ========== 问答详情页 ========== */
.qa-detail-wrap {
    max-width: var(--container-max);
    margin: -50px auto 0;
    padding: 0 var(--space-md);
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: var(--space-lg);
}
.detail-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-xl);
}
.detail-header {
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-lg);
}
.detail-title {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}
.detail-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--color-text-muted);
}
.detail-meta .meta-item { display: flex; align-items: center; gap: 5px; }
.detail-meta .date-right {
    margin-left: auto;
    text-align: right;
    font-family: var(--font-serif);
}
.detail-meta .date-right .big-date {
    font-size: 18px;
    color: var(--color-accent-light);
    font-weight: 600;
}

/* 作者信息 */
.author-box {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: var(--space-lg);
    padding: 16px 20px;
    background: var(--color-bg-soft);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}
.author-avatar {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--gradient-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}
.author-info { flex: 1; }
.author-info .name { font-weight: 600; font-size: 16px; color: var(--color-text); }
.author-info .identity { font-size: 13px; color: var(--color-text-secondary); margin-top: 2px; }

/* 回答内容 */
.answer-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: var(--space-md);
}
.answer-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: break-word;
}
.answer-time {
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px dashed var(--color-border-light);
    font-size: 13px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 相关/最新 列表（侧边栏和底部共用） */
.related-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: padding .2s;
}
.related-item:last-child { border-bottom: none; }
.related-item:hover { padding-left: 6px; }
.related-item .q-icon {
    flex-shrink: 0;
    width: 24px; height: 24px;
    border-radius: 6px;
    background: rgba(201, 169, 97, 0.15);
    color: var(--color-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    margin-top: 2px;
}
.related-item .r-body { flex: 1; min-width: 0; }
.related-item .r-title {
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 4px;
}
.related-item:hover .r-title { color: var(--color-accent-light); }
.related-item .r-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* 底部最新问答区 */
.latest-section {
    max-width: var(--container-max);
    margin: var(--space-xl) auto 0;
    padding: 0 var(--space-md);
}
.latest-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}
.latest-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: all .3s;
}
.latest-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent-light);
}
.latest-card .lc-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}
.latest-card .lc-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--gradient-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
.latest-card .lc-info { flex: 1; min-width: 0; }
.latest-card .lc-name { font-size: 13px; font-weight: 600; color: var(--color-text); }
.latest-card .lc-id { font-size: 11px; color: var(--color-text-muted); }
.latest-card .lc-views { font-size: 12px; color: var(--color-text-muted); }
.latest-card .lc-q {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.latest-card .lc-a {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.latest-card .lc-foot {
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-muted);
}
.latest-card .lc-more { color: var(--color-accent-light); font-weight: 600; }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }

/* ========== 返回按钮 ========== */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: var(--space-md);
    cursor: pointer;
    transition: color .2s;
}
.back-btn:hover { color: var(--color-accent-light); }

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .qa-main, .qa-detail-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .qa-hero { padding: 50px 0 70px; }
    .qa-hero h1 { font-size: 30px; }
    .detail-card { padding: var(--space-md); }
    .detail-title { font-size: 20px; }
    .latest-grid { grid-template-columns: 1fr; }
    .qa-list-section { padding: var(--space-md); }
}