/* Post Cards */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.post-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.post-card-content {
  padding: 24px;
}

.post-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.post-category {
  color: var(--color-primary);
  font-weight: 600;
}

.post-date {
  display: flex;
  align-items: center;
  gap: 4px;
}

.post-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.post-title a {
  color: var(--text-primary);
  text-decoration: none;
}

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

.post-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  padding: 4px 10px;
  background-color: rgba(0, 102, 204, 0.1);
  color: var(--color-primary);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

[data-theme="dark"] .tag {
  background-color: rgba(91, 159, 255, 0.1);
}

.post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--divider-color);
}

.post-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.read-more {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
}

.read-more:hover {
  color: var(--color-accent);
}

/* Post Detail */
.post-detail {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 40px;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.3s, border-color 0.3s;
}

.post-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--divider-color);
}

.post-detail-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

.post-detail-meta {
  display: flex;
  gap: 24px;
  align-items: center;
  font-size: 14px;
  color: var(--text-secondary);
}

.post-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  margin-top: 32px;
  margin-bottom: 16px;
  font-weight: 700;
  color: var(--text-primary);
  scroll-margin-top: 96px;
}

.post-content h1 {
  font-size: 32px;
}

.post-content h2 {
  font-size: 28px;
}

.post-content h3 {
  font-size: 24px;
}

.post-content h4 {
  font-size: 20px;
}

.post-content p {
  margin-bottom: 16px;
}

.post-content code {
  background-color: var(--bg-secondary);
  color: var(--color-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  font-family: 'Courier New', monospace;
}

.post-content pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 16px;
}

.post-content pre code {
  background: none;
  color: var(--text-primary);
  padding: 0;
}

.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: 16px;
  margin: 16px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.post-content ul,
.post-content ol {
  margin-left: 24px;
  margin-bottom: 16px;
}

.post-content li {
  margin-bottom: 8px;
}

.post-content a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.post-content a:hover {
  border-bottom-color: var(--color-primary);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 16px;
  font-size: 15px;
}

.post-content th,
.post-content td {
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  text-align: left;
}

.post-content th {
  background-color: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.post-content tr:nth-child(even) td {
  background-color: var(--bg-secondary);
}

/* Back to list */
.back-to-list {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 16px;
  transition: color 0.2s;
}

.back-to-list:hover {
  color: var(--color-primary);
}

/* TOC (Table of Contents) */
.toc-sidebar {
  position: sticky;
  top: 104px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}

.toc-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
}

.toc-item {
  margin-bottom: 8px;
}

.toc-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  display: block;
  padding: 4px 0;
  transition: color 0.2s;
}

.toc-link:hover {
  color: var(--color-primary);
}

.toc-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Comments Section */
.comments-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--divider-color);
}

.comments-header {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.comment-form {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 32px;
}

.comment-form-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.comment-input,
.comment-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-family: 'Pretendard', sans-serif;
  font-size: 14px;
  transition: all 0.2s;
}

.comment-input:focus,
.comment-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

[data-theme="dark"] .comment-input:focus,
[data-theme="dark"] .comment-textarea:focus {
  box-shadow: 0 0 0 3px rgba(91, 159, 255, 0.1);
}

.comment-textarea {
  min-height: 100px;
  resize: vertical;
  grid-column: 1 / -1;
}

.submit-btn {
  padding: 10px 24px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

.submit-btn:hover {
  background-color: var(--color-accent);
}

/* Comment List */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.comment {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: background-color 0.3s, border-color 0.3s;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.comment-author {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 15px;
}

.comment-date {
  font-size: 13px;
  color: var(--text-secondary);
}

.comment-body {
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
}

/* Empty State - 게시글 없음 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 500px;
  padding: 60px 40px;
  text-align: center;
}

.empty-icon {
  font-size: 80px;
  margin-bottom: 24px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.empty-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.empty-text {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.empty-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.empty-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
  color: white;
}

/* Empty Comments - 댓글 없음 */
.empty-comments {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Search */
.search-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.search-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'Pretendard', sans-serif;
  font-size: 14px;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
  padding: 24px 0;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
}

.page-btn:hover {
  background-color: var(--bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.page-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

.page-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.page-ellipsis {
  padding: 0 8px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Responsive Pagination */
@media (max-width: 768px) {
  .pagination {
    gap: 4px;
    flex-wrap: wrap;
  }

  .page-btn {
    min-width: 36px;
    height: 36px;
    font-size: 13px;
  }
}