/* ==========================================================================
   DevFlow - Post Content Styles
   Sections: Post Detail, Post Content Typography, Post Tags,
             Post Navigation, Related Posts, Comments, Guestbook, TOC
   ========================================================================== */

/* --------------------------------------------------------------------------
   11. Post Detail (740px single column)
   -------------------------------------------------------------------------- */

/* On post detail pages, hide sidebar and center content */
#tt-body-page .layout {
  max-width: var(--post-max);
  display: block;
}

#tt-body-page .sidebar {
  display: none;
}

.post-detail {
  max-width: var(--post-max);
  margin: 0 auto;
}

.post-header {
  margin-bottom: 36px;
}

.post-category {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 4px 10px;
  background: var(--accent-subtle);
  border-radius: 4px;
  transition: background-color var(--transition), color var(--transition);
}

.post-category:hover {
  background: var(--accent-glow);
  color: var(--accent-hover);
}

.post-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-title);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-meta-light);
}

.post-meta > *:not(:last-child)::after {
  content: '\00b7';
  margin-left: 6px;
  color: var(--text-meta-light);
  opacity: 0.5;
}

.post-author {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-section);
  font-family: var(--font-sans);
}

.post-date {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-meta-light);
}

.reading-time {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-meta-light);
}

/* --------------------------------------------------------------------------
   12. Post Content (Typography)
   -------------------------------------------------------------------------- */
.post-content {
  font-size: 16.5px;
  font-weight: 400;
  line-height: 1.78;
  color: var(--text-section);
  word-break: keep-all;
  overflow-wrap: break-word;
}

.post-content > *:first-child {
  margin-top: 0;
}

/* --- Heading Hierarchy --- */
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  scroll-margin-top: calc(var(--header-height) + 20px);
  word-break: keep-all;
}

.post-content h1 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-title);
  margin: 64px 0 16px;
  position: relative;
  padding-bottom: 12px;
}

.post-content h1::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  opacity: 0.7;
}

.post-content h2 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-title);
  margin: 56px 0 16px;
  padding-left: 16px;
  padding-bottom: 0;
  border-bottom: none;
  border-left: 3px solid var(--accent);
  position: relative;
}

.post-content h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-title);
  margin: 40px 0 12px;
}

.post-content h4 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-section);
  margin: 32px 0 8px;
}

/* Tighten headings when stacked */
.post-content h2 + h3 { margin-top: 20px; }
.post-content h3 + h4 { margin-top: 16px; }

/* --- Paragraph --- */
.post-content p {
  margin-bottom: 24px;
}

.post-content p:empty {
  margin-bottom: 12px;
}

/* --- Links --- */
.post-content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 30%, transparent);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: text-decoration-color var(--transition), color var(--transition);
}

.post-content a:hover {
  text-decoration-color: var(--accent);
}

/* --- Strong / Em --- */
.post-content strong {
  font-weight: 700;
  color: var(--text-title);
}

.post-content em {
  font-style: italic;
}

/* --- Lists --- */
.post-content ul,
.post-content ol {
  margin: 8px 0 24px;
  padding-left: 24px;
}

.post-content ul {
  list-style: disc;
}

.post-content ol {
  list-style: decimal;
}

.post-content li {
  margin-bottom: 6px;
  line-height: 1.75;
}

.post-content li::marker {
  color: var(--text-meta-light);
}

.post-content ol > li::marker {
  font-weight: 600;
  color: var(--text-meta);
}

/* Nested list spacing */
.post-content li > ul,
.post-content li > ol {
  margin-top: 6px;
  margin-bottom: 6px;
}

/* --- Blockquote --- */
.post-content blockquote {
  margin: 32px 0;
  padding: 20px 24px 20px 28px;
  background: var(--accent-subtle);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  color: var(--text-section);
  line-height: 1.7;
  position: relative;
}

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

.post-content blockquote p:last-child {
  margin-bottom: 0;
}

/* --- Images & Figures --- */
.post-content img {
  border-radius: 8px;
  margin: 32px 0;
}

.post-content figure {
  margin: 32px 0;
}

.post-content figure img {
  margin: 0;
}

.post-content figcaption {
  font-size: 13px;
  color: var(--text-meta-light);
  text-align: center;
  margin-top: 10px;
  line-height: 1.5;
}

/* --- Horizontal Rule --- */
.post-content hr {
  border: none;
  height: 2px;
  width: 48px;
  background: var(--border-list);
  margin: 56px auto;
  border-radius: 1px;
}

/* --- Tables --- */
.post-content .table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 28px 0;
  border-radius: 8px;
  border: 1px solid var(--border-list);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

/* Table outside wrapper — fallback */
.post-content > table {
  margin: 28px 0;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-list);
}

.post-content th,
.post-content td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-list);
}

.post-content th {
  font-weight: 600;
  font-size: 13px;
  color: var(--text-title);
  background: var(--bg-card);
  white-space: nowrap;
}

.post-content td {
  background: var(--bg-primary);
  color: var(--text-body);
}

.post-content tr:last-child td {
  border-bottom: none;
}

/* Code (inline) */
.post-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  font-weight: 500;
  padding: 2px 7px;
  background: var(--accent-subtle);
  border-radius: 4px;
  color: var(--text-title);
  border: 1px solid var(--accent-glow);
  word-break: break-all;
}

[data-theme="dark"] .post-content code {
  border-color: rgba(245, 158, 11, 0.12);
  background: rgba(245, 158, 11, 0.08);
}

/* Code (block) */
/* !important overrides Tistory/highlight.js inline style="background-color:rgb(248,248,248)"
   injected on pre elements that lack a code_XXXXX id — without it, those blocks stay white */
.post-content pre {
  margin: 32px 0;
  padding: 40px 24px 20px;
  background: var(--code-bg) !important;
  color: var(--code-text) !important;
  border-radius: 10px;
  overflow-x: auto;
  position: relative;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12), 0 1px 3px rgba(0,0,0,0.08);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

/* Terminal window dots - macOS colored */
.post-content pre::before {
  content: '';
  position: absolute;
  top: 14px;
  left: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot-red);
  box-shadow: 16px 0 0 var(--dot-yellow), 32px 0 0 var(--dot-green);
  pointer-events: none;
  opacity: 0.85;
  transition: opacity var(--transition);
}

.post-content pre:hover::before {
  opacity: 1;
}

.post-content pre::-webkit-scrollbar {
  height: 5px;
}

.post-content pre::-webkit-scrollbar-track {
  background: transparent;
}

.post-content pre::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.1);
  border-radius: 3px;
}

[data-theme="dark"] .post-content pre {
  border-color: rgba(255,255,255,0.05);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3), 0 1px 3px rgba(0,0,0,0.2);
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}

[data-theme="dark"] .post-content pre::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
}

.post-content pre code {
  padding: 0;
  background: none;
  border-radius: 0;
  border: none;
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--code-text);
  word-break: normal;
}

/* Code language label */
.code-lang-label {
  position: absolute;
  top: 8px;
  right: 48px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-meta-light);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 0;
  user-select: none;
  pointer-events: none;
  opacity: 0.6;
}

/* Code copy button */
.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(0,0,0,0.04);
  border: none;
  border-radius: 6px;
  color: var(--text-meta-light);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition), background-color var(--transition), color var(--transition);
}

.post-content pre:hover .code-copy-btn {
  opacity: 1;
}

/* Touch devices: always show copy button */
@media (hover: none) {
  .code-copy-btn {
    opacity: 0.7;
  }
}

.code-copy-btn:hover {
  background: rgba(0,0,0,0.08);
  color: var(--text-title);
}

[data-theme="dark"] .code-copy-btn {
  background: rgba(255,255,255,0.06);
}

[data-theme="dark"] .code-copy-btn:hover {
  background: rgba(255,255,255,0.12);
}

.code-copy-btn.copied {
  color: #22c55e;
}

/* --------------------------------------------------------------------------
   13. Post Tags
   -------------------------------------------------------------------------- */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border-list);
}

.tag-item {
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-mono);
  color: var(--text-meta);
  padding: 5px 12px;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid transparent;
  transition: all var(--transition);
  letter-spacing: 0.01em;
}

.tag-item::before {
  content: '#';
  color: var(--accent);
  opacity: 0.5;
  margin-right: 2px;
  transition: opacity var(--transition);
}

.tag-item:hover {
  color: var(--accent);
  background: var(--accent-subtle);
  border-color: var(--accent-glow);
}

.tag-item:hover::before {
  opacity: 1;
}

[data-theme="dark"] .tag-item:hover {
  background: var(--accent-subtle);
  border-color: rgba(245, 158, 11, 0.2);
}

/* --------------------------------------------------------------------------
   14. Post Navigation (Previous / Next)
   -------------------------------------------------------------------------- */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 48px;
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-radius: 10px;
  border: 1px solid transparent;
  transition: all var(--transition);
}

.post-nav-item:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-glow);
  transform: translateY(-1px);
}

[data-theme="dark"] .post-nav-item:hover {
  background: var(--accent-subtle);
  border-color: rgba(245, 158, 11, 0.15);
}

.post-nav-next {
  grid-column: 2;
  text-align: right;
}

.post-nav-label {
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-meta-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.post-nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-title);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   15. Related Posts
   -------------------------------------------------------------------------- */
.related-posts {
  margin-top: 48px;
}

.related-posts-title {
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-section);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.related-posts-title::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  opacity: 0.7;
}

.related-posts-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.related-posts-list li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-radius: var(--radius-btn);
  transition: background-color var(--transition);
}

.related-posts-list li a:hover {
  background: var(--bg-card);
}

.related-post-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-title);
}

.related-post-date {
  font-size: 13px;
  color: var(--text-meta-light);
  flex-shrink: 0;
  margin-left: 16px;
}

/* --------------------------------------------------------------------------
   16. Comments (Tistory default styling)
   -------------------------------------------------------------------------- */
.tt_comment_area,
.tt-comment-area {
  margin-top: 48px;
}

/* Tistory comment write form */
.tt_comment_area .tt-box-write,
.tt-comment-area .tt-box-write,
.tt_comment_area .tt-area-write,
.tt-comment-area .tt-area-write,
.tt-comment-write {
  display: block;
}

.tt_comment_area .tt-box-textarea,
.tt-comment-area .tt-box-textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-list);
  border-radius: var(--radius-img);
  transition: border-color var(--transition);
}

.tt_comment_area .tt-box-textarea:focus-within,
.tt-comment-area .tt-box-textarea:focus-within {
  border-color: var(--accent);
}

.tt_comment_area textarea,
.tt-comment-area textarea {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-body);
  background: transparent;
}

.tt_comment_area .tt-btn-register,
.tt-comment-area .tt-btn-register {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition);
}

.tt_comment_area .tt-btn-register:hover,
.tt-comment-area .tt-btn-register:hover {
  background: var(--accent-hover);
}

/* Tistory comment list items */
.tt-comment-cont,
.tt_comment_area .tt-comment-cont {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-list);
}

.tt_comment_area .tt_desc,
.tt-comment-area .tt_desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
}

.tt_comment_area .tt_date,
.tt-comment-area .tt_date {
  font-size: 12px;
  color: var(--text-meta-light);
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   17. Guestbook
   -------------------------------------------------------------------------- */
.guestbook {
  padding: 0;
}

.guestbook .section-title {
  font-size: 24px;
  margin-bottom: 8px;
}

.guestbook-desc {
  font-size: 14px;
  color: var(--text-meta);
  margin-bottom: 32px;
}

/* Guestbook comment area styling */
.guestbook .tt_comment_area,
.guestbook .tt-comment-area {
  margin-top: 0;
  display: block !important;
}

/* Ensure Tistory comment write form is visible */
.guestbook .tt_comment_area .tt-box-write,
.guestbook .tt-comment-area .tt-box-write,
.guestbook .tt-comment-write,
.guestbook .tt_comment_area .tt-area-write,
.guestbook .tt-comment-area .tt-area-write {
  display: block !important;
}

/* Guestbook comment write form */
.guestbook .tt_comment_area .tt_box_textarea,
.guestbook .tt-comment-area .tt_box_textarea {
  background: var(--bg-card);
  border: 1px solid var(--bg-card);
  border-radius: var(--radius-img);
  transition: border-color var(--transition);
}

.guestbook .tt_comment_area .tt_box_textarea:focus-within,
.guestbook .tt-comment-area .tt_box_textarea:focus-within {
  border-color: var(--accent, #3b82f6);
}

.guestbook .tt_comment_area textarea,
.guestbook .tt-comment-area textarea {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-body);
  background: transparent;
}

/* Guestbook comment list */
.guestbook .tt_comment_area .tt-comment-cont,
.guestbook .tt-comment-area .tt-comment-cont {
  padding: 20px 0;
  border-bottom: 1px solid var(--bg-card);
}

.guestbook .tt_comment_area .tt_desc,
.guestbook .tt-comment-area .tt_desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
}

.guestbook .tt_comment_area .tt_date,
.guestbook .tt-comment-area .tt_date {
  font-size: 12px;
  color: var(--text-meta);
}

/* Guestbook on its own page — give main content more room */
#tt-body-guestbook .main-content {
  min-height: 400px;
}

/* --------------------------------------------------------------------------
   18. TOC (Table of Contents)
   -------------------------------------------------------------------------- */
.toc {
  display: none;
}

#tt-body-page .toc {
  display: none;
}

#tt-body-page .toc.active {
  display: block;
  position: static;
  width: 100%;
  margin-bottom: 36px;
  padding: 16px 20px;
  background: var(--bg-card);
  border-radius: 12px;
}

.toc-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-meta-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  padding-bottom: 0;
  border-bottom: none;
  cursor: pointer;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin: 0;
  padding: 0;
  line-height: 1.3;
}

.toc-list a {
  display: block;
  padding: 4px 0 4px 12px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-meta);
  text-decoration: none;
  line-height: 1.4;
  border-left: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* h1: top-level */
.toc-list a.toc-h1 {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-title);
  padding-left: 8px;
}

/* h2: main section */
.toc-list a.toc-h2 {
  font-weight: 500;
  font-size: 13px;
  color: var(--text-body);
  padding-left: 12px;
}

/* h3: sub-item — subdued */
.toc-list a.toc-h3 {
  font-weight: 400;
  font-size: 12px;
  color: var(--text-meta);
  padding-left: 24px;
  opacity: 0.8;
}

/* h4: deeply nested */
.toc-list a.toc-h4 {
  font-weight: 400;
  font-size: 11px;
  color: var(--text-meta-light);
  padding-left: 36px;
  opacity: 0.7;
}

/* active state */
.toc-list a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  opacity: 1;
  font-weight: 600;
}

.toc-list a:hover {
  color: var(--text-title);
  opacity: 1;
}