/* Content Aggregator Frontend Styles - 对齐OneNav WP主题 */

/* ===== CSS Variables ===== */
:root {
    --ca-primary: #6366f1;
    --ca-primary-dark: #4f46e5;
    --ca-primary-light: #eef2ff;
    --ca-accent: #10b981;
    --ca-accent-dark: #059669;
    --ca-accent-light: #ecfdf5;
    --ca-text: #0f172a;
    --ca-text-secondary: #334155;
    --ca-text-light: #64748b;
    --ca-text-muted: #94a3b8;
    --ca-bg: #f1f5f9;
    --ca-bg-white: #ffffff;
    --ca-bg-card: #ffffff;
    --ca-border: #e2e8f0;
    --ca-border-light: #f1f5f9;
    --ca-shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --ca-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --ca-shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --ca-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --ca-radius: 10px;
    --ca-radius-lg: 14px;
    --ca-radius-xl: 20px;
    --ca-radius-full: 9999px;
    --ca-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Wrapper ===== */
.ca-articles-wrapper {
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.ca-all-articles {
    margin-top: 24px;
}

/* ===== Header ===== */
.ca-articles-header {
    margin-bottom: 24px;
    padding: 28px 32px;
    background: linear-gradient(135deg, var(--ca-primary) 0%, var(--ca-primary-dark) 100%);
    border-radius: var(--ca-radius-lg);
    border-bottom: none;
    color: #fff;
}

.ca-keyword-title {
    font-size: 1.6em;
    color: #fff;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ca-article-count {
    font-size: 0.55em;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
    background: rgba(255,255,255,0.15);
    padding: 4px 12px;
    border-radius: var(--ca-radius-full);
}

.ca-section-title {
    font-size: 1.6em;
    color: #fff;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ca-section-title i {
    font-size: 0.9em;
    opacity: 0.85;
}

/* ===== Keyword Highlight ===== */
.ca-keyword-highlight {
    background: linear-gradient(120deg, #fde68a 0%, #fbbf24 100%);
    color: #92400e;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

/* ===== 匹配关键词标签 ===== */
.ca-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.ca-matched-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex-shrink: 0;
}

.ca-matched-keyword {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    white-space: nowrap;
    box-shadow: 0 2px 6px rgba(234, 88, 12, 0.35);
    transition: all 0.2s ease;
}

.ca-matched-keyword:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(234, 88, 12, 0.45);
}

/* ===== Keyword Tag ===== */
.ca-keyword-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--ca-primary-light);
    color: var(--ca-primary);
    padding: 5px 14px;
    border-radius: var(--ca-radius-full);
    font-size: 0.8em;
    font-weight: 600;
    margin-bottom: 10px;
    transition: var(--ca-transition);
}

.ca-keyword-tag:hover {
    background: var(--ca-primary);
    color: #fff;
}

/* ===== Articles Grid ===== */
.ca-articles-grid {
    display: grid;
    gap: 20px;
}

.ca-columns-1 { grid-template-columns: 1fr; }
.ca-columns-2 { grid-template-columns: repeat(2, 1fr); }
.ca-columns-3 { grid-template-columns: repeat(3, 1fr); }
.ca-columns-4 { grid-template-columns: repeat(4, 1fr); }

/* ===== Article Item ===== */
.ca-article-item {
    background: var(--ca-bg-card);
    border-radius: var(--ca-radius);
    overflow: hidden;
    box-shadow: var(--ca-shadow);
    transition: var(--ca-transition);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--ca-border-light);
}

.ca-article-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--ca-shadow-lg);
    border-color: var(--ca-border);
}

.ca-article-thumbnail {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.ca-article-thumbnail::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(transparent, rgba(0,0,0,0.03));
}

.ca-article-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ca-article-item:hover .ca-article-thumbnail img {
    transform: scale(1.06);
}

.ca-article-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.ca-article-title {
    margin: 0 0 10px;
    font-size: 1.1em;
    font-weight: 600;
    line-height: 1.5;
}

.ca-article-title a {
    color: var(--ca-text);
    text-decoration: none;
    transition: var(--ca-transition);
}

.ca-article-title a:hover {
    color: var(--ca-primary);
}

.ca-article-excerpt {
    color: var(--ca-text-light);
    font-size: 0.9em;
    line-height: 1.7;
    margin: 0 0 14px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ca-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 0.8em;
    color: var(--ca-text-muted);
    padding-top: 14px;
    border-top: 1px solid var(--ca-border-light);
}

.ca-meta-date,
.ca-meta-author {
    display: flex;
    align-items: center;
    gap: 5px;
}

.ca-meta-date i,
.ca-meta-author i {
    font-size: 12px;
    color: var(--ca-text-muted);
}

/* ===== Article Keyword ===== */
.ca-article-keyword {
    margin-bottom: 10px;
}

/* ===== Load More Button ===== */
.ca-load-more-wrapper {
    text-align: center;
    margin-top: 32px;
}

.ca-load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 36px;
    background: var(--ca-primary);
    color: #fff;
    border: none;
    border-radius: var(--ca-radius-full);
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--ca-transition);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.ca-load-more-btn:hover {
    background: var(--ca-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.ca-load-more-btn:active {
    transform: translateY(0);
}

.ca-load-more-btn:disabled {
    background: var(--ca-border);
    color: var(--ca-text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ===== Error & No Articles ===== */
.ca-error,
.ca-no-articles {
    text-align: center;
    padding: 48px 24px;
    background: var(--ca-bg-card);
    border-radius: var(--ca-radius);
    color: var(--ca-text-light);
    font-size: 1em;
    border: 1px solid var(--ca-border-light);
}

.ca-error {
    background: #fef2f2;
    color: #dc2626;
    border-color: #fecaca;
}

/* ===== Related Keywords Section (内链循环) ===== */
.ca-related-keywords-section,
.ca-taxonomy-related-section {
    margin-top: 36px;
    padding: 28px 32px;
    background: var(--ca-bg-card);
    border-radius: var(--ca-radius-lg);
    border: 1px solid var(--ca-border-light);
    box-shadow: var(--ca-shadow);
}

.ca-related-section-title {
    font-size: 1.3em;
    color: var(--ca-text);
    margin: 0 0 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.ca-related-section-title i {
    color: var(--ca-primary);
    font-size: 0.9em;
}

.ca-related-keywords-list {
    display: grid;
    gap: 16px;
}

.ca-related-keyword-item {
    padding: 16px 20px;
    background: var(--ca-bg);
    border-radius: var(--ca-radius);
    border: 1px solid transparent;
    transition: var(--ca-transition);
}

.ca-related-keyword-item:hover {
    border-color: var(--ca-primary);
    background: var(--ca-primary-light);
}

.ca-related-keyword-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-decoration: none;
    color: var(--ca-text);
}

.ca-keyword-name {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1em;
}

.ca-keyword-name i {
    color: var(--ca-primary);
    font-size: 0.85em;
}

.ca-keyword-count {
    font-size: 0.85em;
    color: var(--ca-text-light);
    background: rgba(99, 102, 241, 0.1);
    color: var(--ca-primary);
    padding: 4px 12px;
    border-radius: var(--ca-radius-full);
    font-weight: 500;
}

.ca-related-articles {
    margin: 12px 0 0;
    padding-left: 24px;
    list-style: none;
}

.ca-related-articles li {
    margin-bottom: 6px;
}

.ca-related-articles li:last-child {
    margin-bottom: 0;
}

/* ===== 聚合标题标签云 (ca_keyword_cloud) ===== */
.ca-keyword-cloud-wrap {
    margin: 16px 0;
    padding: 14px 16px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.ca-keyword-cloud-wrap .ca-cloud-header {
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px dashed #cbd5e1;
}

.ca-keyword-cloud-wrap .ca-cloud-title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: #334155;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ca-keyword-cloud-wrap .ca-cloud-title .fa {
    color: var(--ca-primary, #6366f1);
}

.ca-keyword-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.ca-keyword-cloud .ca-cloud-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    font-size: 13px;
    line-height: 1.5;
    color: #475569;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.ca-keyword-cloud .ca-cloud-tag:hover {
    color: #ffffff;
    background: var(--ca-primary, #6366f1);
    border-color: var(--ca-primary, #6366f1);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
}

/* 部分匹配的聚合标题（中优先级） */
.ca-keyword-cloud .ca-cloud-tag-partial {
    color: #1e40af;
    background: #eff6ff;
    border-color: #bfdbfe;
}

.ca-keyword-cloud .ca-cloud-tag-partial:hover {
    color: #ffffff;
    background: #3b82f6;
    border-color: #3b82f6;
    box-shadow: 0 4px 10px rgba(59, 130, 246, 0.3);
}

/* 高度相关的聚合标题（最高优先级，醒目展示） */
.ca-keyword-cloud .ca-cloud-tag-related {
    color: #ffffff;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    border-color: #4f46e5;
    font-weight: 500;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
}

.ca-keyword-cloud .ca-cloud-tag-related:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
    border-color: #4338ca;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(99, 102, 241, 0.4);
}

/* 响应式适配移动端 */
@media (max-width: 768px) {
    .ca-keyword-cloud-wrap {
        padding: 10px 12px;
    }
    .ca-keyword-cloud-wrap .ca-cloud-title {
        font-size: 14px;
    }
    .ca-keyword-cloud .ca-cloud-tag {
        font-size: 12px;
        padding: 4px 10px;
    }
}

.ca-related-articles a {
    font-size: 0.9em;
    color: var(--ca-text-secondary);
    text-decoration: none;
    transition: var(--ca-transition);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ca-related-articles a:hover {
    color: var(--ca-primary);
    text-decoration: underline;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .ca-columns-3 { grid-template-columns: repeat(2, 1fr); }
    .ca-columns-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .ca-articles-header {
        padding: 20px;
    }

    .ca-keyword-title,
    .ca-section-title {
        font-size: 1.3em;
    }

    .ca-columns-2,
    .ca-columns-3,
    .ca-columns-4 {
        grid-template-columns: 1fr;
    }

    .ca-article-thumbnail {
        height: 180px;
    }

    .ca-article-content {
        padding: 16px;
    }

    .ca-related-keywords-section,
    .ca-taxonomy-related-section {
        padding: 20px;
    }

    .ca-related-section-title {
        font-size: 1.15em;
    }

    .ca-related-keyword-item {
        padding: 14px 16px;
    }
}