/* 模块二：论文模块 - 论文详情页
   ========================================
   学术交流平台 - 论文详情页样式
   设计风格：与首页一致的典雅质朴
   ======================================== */

/* ===== 面包屑 ===== */
.detail-breadcrumb {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 14px 0;
    margin-top: 60px;
}

.detail-breadcrumb .breadcrumb-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.breadcrumb-path {
    display: flex;
    align-items: center;
    font-size: 13px;
    color: var(--color-text-light);
}

.breadcrumb-path a {
    color: var(--color-text-light);
    transition: color 0.3s ease;
}

.breadcrumb-path a:hover {
    color: var(--color-primary-dark);
}

.breadcrumb-path .separator {
    margin: 0 8px;
    color: var(--color-border);
}

.breadcrumb-path .current {
    color: var(--color-dark);
    font-weight: 500;
}

.breadcrumb-share {
    display: flex;
    align-items: center;
    gap: 12px;
}

.breadcrumb-share-label {
    font-size: 12px;
    color: var(--color-text-light);
}

.breadcrumb-share a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-text-light);
    font-size: 14px;
    transition: all 0.3s ease;
}

.breadcrumb-share a:hover {
    background: var(--color-primary);
    color: var(--color-dark);
}

/* ===== 详情页紧凑 Banner ===== */
.detail-hero {
    position: relative;
    height: 160px;
    overflow: hidden;
}

.detail-hero > img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-hero .paper-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(61, 52, 39, 0.9) 0%,
        rgba(91, 74, 63, 0.8) 50%,
        rgba(139, 115, 85, 0.6) 100%
    );
}

.detail-hero-content {
    position: relative;
    z-index: 2;
    padding: 32px 0 0;
}

.detail-hero-content .detail-hero-tag {
    display: inline-block;
    margin-bottom: 10px;
}

.detail-hero-content h1 {
    font-size: 24px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 1px;
    margin: 0 0 10px;
    line-height: 1.5;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.detail-hero-authors {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 0.5px;
}

.detail-hero-authors i {
    margin-right: 4px;
}

/* ===== 元数据栏 ===== */
.detail-meta-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 12px;
    color: var(--color-text-light);
}

.detail-meta-bar .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.detail-meta-bar .meta-item i {
    font-size: 12px;
    color: var(--color-primary-dark);
}

.detail-meta-bar .meta-divider {
    width: 1px;
    height: 14px;
    background: var(--color-border);
}

/* ===== 关键词 ===== */
.detail-keywords {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
}

.detail-keywords-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-brown);
    flex-shrink: 0;
}

.detail-keyword-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 3px 12px;
    background: var(--color-primary-light);
    color: var(--color-brown-medium);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.detail-keyword-tag:hover {
    background: var(--color-primary);
    color: var(--color-dark);
}

/* ===== 操作按钮 ===== */
.detail-actions {
    display: flex;
    gap: 10px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.detail-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.detail-action-btn--download {
    background: linear-gradient(135deg, var(--color-brown), var(--color-brown-medium));
    color: var(--color-primary);
    border: none;
}

.detail-action-btn--download:hover {
    background: linear-gradient(135deg, var(--color-dark), var(--color-brown));
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.detail-action-btn--share,
.detail-action-btn--cite {
    background: var(--color-white);
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
}

.detail-action-btn--share:hover,
.detail-action-btn--cite:hover {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
}

/* ===== 详情内容卡片 ===== */
.detail-card {
    background: var(--color-white);
    border-radius: 8px;
    border: 1px solid rgba(212, 197, 169, 0.5);
    margin-top: 24px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(61, 52, 39, 0.04);
}

.detail-card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-white));
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.detail-card-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
}

.detail-card-header h3 i {
    margin-right: 8px;
    color: var(--color-primary-dark);
}

.detail-card-header .toggle-btn {
    font-size: 13px;
    color: var(--color-text-light);
    cursor: pointer;
    transition: color 0.3s ease;
}

.detail-card-header .toggle-btn:hover {
    color: var(--color-primary-dark);
}

.detail-card-body {
    padding: 24px;
}

/* ===== 摘要 ===== */
.detail-abstract-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text);
    margin: 0 0 10px;
}

.detail-abstract-text .abstract-label {
    font-weight: 600;
    color: var(--color-dark);
    margin-right: 4px;
}

.detail-abstract-en {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--color-border);
}

.detail-abstract-en .abstract-label {
    font-style: italic;
}

/* ===== 正文预览 ===== */
.detail-content {
    font-size: 14px;
    line-height: 2;
    color: var(--color-text);
}

.detail-content p {
    margin-bottom: 16px;
    text-indent: 2em;
}

.detail-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-dark);
    margin: 24px 0 12px;
    letter-spacing: 0.5px;
}

.detail-content-fade {
    position: relative;
}

.detail-content-fade::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(transparent, var(--color-white));
    pointer-events: none;
}

.detail-readmore {
    text-align: center;
    padding: 20px 0 8px;
}

.detail-readmore-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 32px;
    background: linear-gradient(135deg, var(--color-brown), var(--color-brown-medium));
    color: var(--color-primary);
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.detail-readmore-btn:hover {
    background: linear-gradient(135deg, var(--color-dark), var(--color-brown));
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ===== 参考文献 ===== */
.detail-refs-list {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: ref-counter;
}

.detail-refs-list li {
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border);
    font-size: 13px;
    line-height: 1.8;
    color: var(--color-text);
    display: flex;
    gap: 10px;
}

.detail-refs-list li:last-child {
    border-bottom: none;
}

.detail-refs-list li::before {
    counter-increment: ref-counter;
    content: '[' counter(ref-counter) ']';
    font-weight: 600;
    color: var(--color-primary-dark);
    flex-shrink: 0;
    min-width: 30px;
}

/* ===== 引用导出 ===== */
.citation-tabs {
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0;
}

.citation-tabs > li > a {
    font-size: 13px;
    color: var(--color-text-light);
    border: none;
    border-bottom: 2px solid transparent;
    padding: 10px 16px;
    border-radius: 0;
    transition: all 0.3s ease;
}

.citation-tabs > li > a:hover {
    background: transparent;
    color: var(--color-dark);
    border-bottom-color: var(--color-primary-dark);
}

.citation-tabs > li.active > a,
.citation-tabs > li.active > a:hover {
    color: var(--color-dark);
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-primary-dark);
    font-weight: 600;
}

.citation-block {
    position: relative;
    background: var(--color-primary-light);
    border-radius: 4px;
    padding: 16px 20px;
    margin-top: 0;
}

.citation-block pre {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    font-size: 13px;
    line-height: 1.8;
    color: var(--color-text);
    white-space: pre-wrap;
    word-break: break-all;
}

.citation-copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--color-text-light);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.citation-copy-btn:hover {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
}

.citation-copy-btn.copied {
    background: var(--color-primary);
    border-color: var(--color-primary-dark);
    color: var(--color-dark);
}

/* ===== 侧边栏详情信息 ===== */
.detail-sidebar-info {
    padding: 16px 20px;
}

.detail-info-row {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border);
    font-size: 13px;
}

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

.detail-info-label {
    color: var(--color-text-light);
    min-width: 72px;
    flex-shrink: 0;
}

.detail-info-value {
    color: var(--color-text);
    flex: 1;
}

.detail-download-btn {
    display: block;
    text-align: center;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--color-brown), var(--color-brown-medium));
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.detail-download-btn:hover {
    background: linear-gradient(135deg, var(--color-dark), var(--color-brown));
    color: #FFFFFF;
}

.detail-download-btn i {
    margin-right: 6px;
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
    .detail-hero {
        height: 120px;
    }

    .detail-hero-content h1 {
        font-size: 18px;
    }

    .detail-actions {
        flex-wrap: wrap;
    }

    .breadcrumb-share {
        display: none;
    }
}

@media (max-width: 767px) {
    .detail-hero {
        height: 100px;
    }

    .detail-hero-content {
        padding: 20px 0 0;
    }

    .detail-hero-content h1 {
        font-size: 16px;
        letter-spacing: 0;
    }

    .detail-meta-bar {
        gap: 10px;
    }

    .detail-meta-bar .meta-divider {
        display: none;
    }

    .detail-card-body {
        padding: 16px;
    }
}