/* Post Detail Styles */
.post-header {
    background: var(--gray-light);
    padding: 60px 0 40px;
}

.post-header-content {
    max-width: 800px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    transition: gap 0.3s ease;
}

.back-link:hover {
    gap: 0.75rem;
}

.back-link::before {
    content: '←';
}

.post-topic {
    font-size: 0.78rem;
    color: var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    background: var(--bg-alt);
    border: 1px solid var(--gray-border);
    padding: 6px 16px;
    border-radius: 999px;
    display: inline-block;
    margin-bottom: 1rem;
}

.post-title {
    line-height: 1.15;
    margin-bottom: 1rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: var(--text-soft);
    font-size: 0.95rem;
}

.post-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Post Content */
.post-content-wrapper {
    padding: 60px 0;
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
}

.post-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.post-body h1 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.post-body h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    border-bottom: 2px solid var(--gray-border);
    padding-bottom: 0.5rem;
}

.post-body h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.post-body h4 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.post-body p {
    margin-bottom: 1.5rem;
}

.post-body ul, .post-body ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.post-body li {
    margin-bottom: 0.5rem;
}

.post-body img {
    width: 100%;
    height: auto;
    border-radius: var(--r-md);
    margin: 2rem 0;
    box-shadow: var(--shadow-sm);
}

.post-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--text-soft);
}

.post-body a {
    color: var(--primary-color);
    text-decoration: underline;
}

.post-body a:hover {
    text-decoration: none;
}

/* Post Actions */
.post-actions {
    display: flex;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-border);
}

/* Post Metadata Section */
.post-metadata-section {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--paper);
    border-radius: var(--r-md);
    border: 1px solid var(--gray-border);
    box-shadow: var(--shadow-sm);
}

.metadata-title {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.metadata-grid {
    display: grid;
    gap: 1.25rem;
}

.metadata-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.metadata-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metadata-value {
    color: var(--text-color);
    line-height: 1.6;
}

.keywords-list {
    color: var(--primary-color);
    font-weight: 500;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-download svg {
    width: 20px;
    height: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .post-title {
        font-size: 1.75rem;
    }
    
    .post-header {
        padding: 40px 0 30px;
    }
    
    .post-content-wrapper {
        padding: 40px 0;
    }
    
    .post-body {
        font-size: 1rem;
    }
    
    .post-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

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

    .post-actions .btn {
        flex: 1;
        text-align: center;
    }
}