/* ========================================
   Article Detail Page Styles
   ======================================== */

.article-hero {
    background-color: #1E5E6B;
    padding: 4rem 0;
}

.article-hero-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.article-breadcrumb a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    text-decoration: underline;
}

.article-breadcrumb span {
    color: rgba(255, 255, 255, 0.5);
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin: 0 0 1.5rem;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-meta span:not(:last-child)::after {
    content: '|';
    margin-left: 0.5rem;
    color: rgba(255, 255, 255, 0.5);
}

.article-main {
    padding: 4rem 0;
}

.article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: opacity 0.2s ease;
}

.back-link:hover {
    opacity: 0.7;
}

.back-link svg {
    width: 14px;
    height: 14px;
}

.article-content {
    background-color: var(--white);
}

.article-excerpt {
    font-size: 1.125rem;
    color: var(--text-light);
    margin: 0 0 3rem;
    line-height: 1.7;
    padding-left: 1.25rem;
    border-left: 4px solid var(--primary-color);
}

.article-body {
    color: var(--text-gray);
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-gray);
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body h2:last-child {
    font-size: 18px;
    padding-top: 1.5rem;
    margin-top: 2rem;
    border-bottom: none;
    border-top: 1px solid var(--border-gray);
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 2rem 0 0.75rem;
}

.article-body p {
    font-size: 1rem;
    line-height: 1.75;
    margin: 0 0 1.25rem;
}

.article-body p:last-child {
    margin-bottom: 0;
}

.article-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 2rem;
}

.article-list li {
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 0.5rem;
    color: var(--text-gray);
    padding-left: 1.5rem;
    position: relative;
}

.article-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.625rem;
    width: 24px;
    height: 2px;
    background-color: var(--accent-blue);
}

.article-references {
    list-style: decimal;
    padding-left: 1.75rem;
    margin: 1rem 0 2.5rem;
}

.article-references li {
    font-size: 13px;
    line-height: 1.75;
    margin-bottom: 1rem;
    color: var(--text-gray);
}

.article-references li:last-child {
    margin-bottom: 0;
}

.article-references a {
    color: var(--primary-light);
    text-decoration: none;
}

.article-references a:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    margin-top: 1.5rem;
    transition: opacity 0.2s ease;
}

.back-link:hover {
    opacity: 0.7;
}

.back-link svg {
    width: 14px;
    height: 14px;
}

@media (max-width: 768px) {
    .article-hero {
        padding: 2.5rem 0;
    }
    
    .article-title {
        font-size: 1.75rem;
    }
    
    .article-meta {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .article-main {
        padding: 2rem 0;
    }
    
    .article-excerpt {
        font-size: 1rem;
        margin-bottom: 2rem;
        padding-left: 1rem;
    }
    
    .article-body h2 {
        font-size: 1.25rem;
        margin-top: 2rem;
    }
    
    .article-body h3 {
        font-size: 1.125rem;
    }
    
    .article-body p {
        font-size: 0.9375rem;
    }
    
    .article-list li {
        font-size: 0.9375rem;
    }
    
    .article-references li {
        font-size: 0.875rem;
    }
}