* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Theme variables ─────────────────────────────────────────────────────── */

:root {
  --hdr-bg: #1a1a2e;
  --hdr-color: #fff;
  --page-bg: #f5f5f5;
  --doc-bg: #fff;
  --doc-color: #333;
  --heading-color: #111;
  --heading-color-2: #222;
  --sidebar-bg: #fafafa;
  --sidebar-border: #e5e7eb;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-light: #ede9fe;
  --accent-text: #6d28d9;
  --border: #e5e7eb;
  --text-muted: #6b7280;
  --text-dim: #d1d5db;
  --card-bg: #fff;
  --card-border: #e5e7eb;
  --input-border: #d1d5db;
  --mark-bg: #fef08a;
  --mark-border: #eab308;
  --mark-hover-bg: #fde047;
  --mark-active-shadow: #eab308;
  --author-bar-bg: #f8f7ff;
  --author-bar-border: #e5e7eb;
  --resizer-hover: #a78bfa;
  --thread-anchor-bg: #fef9c3;
  --thread-anchor-border: #eab308;
  --thread-anchor-color: #713f12;
  --modal-selected-bg: #fef9c3;
  --modal-selected-border: #eab308;
  --modal-selected-color: #713f12;
  --secondary: #f1f5f9;
  --secondary-hover: #e2e8f0;
  --secondary-border: #cbd5e1;
  --secondary-text: #475569;
  --secondary-light: #f8fafc;
}

[data-theme="dark"] {
  --hdr-bg: #111827;
  --hdr-color: #f9fafb;
  --page-bg: #1f2937;
  --doc-bg: #111827;
  --doc-color: #e5e7eb;
  --heading-color: #f9fafb;
  --heading-color-2: #e5e7eb;
  --sidebar-bg: #1f2937;
  --sidebar-border: #374151;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --accent-light: #1e1b4b;
  --accent-text: #a5b4fc;
  --border: #374151;
  --text-muted: #9ca3af;
  --text-dim: #4b5563;
  --card-bg: #1f2937;
  --card-border: #374151;
  --input-border: #374151;
  --mark-bg: #78350f;
  --mark-border: #d97706;
  --mark-hover-bg: #92400e;
  --mark-active-shadow: #d97706;
  --author-bar-bg: #1f2937;
  --author-bar-border: #374151;
  --resizer-hover: #818cf8;
  --thread-anchor-bg: #292524;
  --thread-anchor-border: #d97706;
  --thread-anchor-color: #fcd34d;
  --modal-selected-bg: #292524;
  --modal-selected-border: #d97706;
  --modal-selected-color: #fcd34d;
  --secondary: #1e293b;
  --secondary-hover: #263347;
  --secondary-border: #334155;
  --secondary-text: #94a3b8;
  --secondary-light: #172032;
}

[data-theme="sepia"] {
  --hdr-bg: #3d2b1f;
  --hdr-color: #f5e6d3;
  --page-bg: #ede0c8;
  --doc-bg: #faf3e8;
  --doc-color: #3d2b1f;
  --heading-color: #2a1a10;
  --heading-color-2: #3d2b1f;
  --sidebar-bg: #f5ead8;
  --sidebar-border: #d4b896;
  --accent: #8b4513;
  --accent-hover: #6b3410;
  --accent-light: #f5e6d3;
  --accent-text: #6b3410;
  --border: #d4b896;
  --text-muted: #7a6050;
  --text-dim: #b8a090;
  --card-bg: #faf3e8;
  --card-border: #d4b896;
  --input-border: #c8a882;
  --mark-bg: #f0d080;
  --mark-border: #c8960c;
  --mark-hover-bg: #e8c060;
  --mark-active-shadow: #c8960c;
  --author-bar-bg: #f5ead8;
  --author-bar-border: #d4b896;
  --resizer-hover: #8b4513;
  --thread-anchor-bg: #f0e4c0;
  --thread-anchor-border: #c8960c;
  --thread-anchor-color: #5c3317;
  --modal-selected-bg: #f0e4c0;
  --modal-selected-border: #c8960c;
  --modal-selected-color: #5c3317;
  --secondary: #e8d9c0;
  --secondary-hover: #dccba8;
  --secondary-border: #c4a882;
  --secondary-text: #5c3d1e;
  --secondary-light: #f0e8d8;
}

[data-theme="ocean"] {
  --hdr-bg: #0c2340;
  --hdr-color: #e0f2fe;
  --page-bg: #e0f2fe;
  --doc-bg: #fff;
  --doc-color: #0c2340;
  --heading-color: #0c2340;
  --heading-color-2: #0c3560;
  --sidebar-bg: #f0f9ff;
  --sidebar-border: #bae6fd;
  --accent: #0369a1;
  --accent-hover: #0284c7;
  --accent-light: #e0f2fe;
  --accent-text: #0369a1;
  --border: #bae6fd;
  --text-muted: #0369a1;
  --text-dim: #7dd3fc;
  --card-bg: #fff;
  --card-border: #bae6fd;
  --input-border: #7dd3fc;
  --mark-bg: #bae6fd;
  --mark-border: #0284c7;
  --mark-hover-bg: #7dd3fc;
  --mark-active-shadow: #0284c7;
  --author-bar-bg: #f0f9ff;
  --author-bar-border: #bae6fd;
  --resizer-hover: #0369a1;
  --thread-anchor-bg: #e0f2fe;
  --thread-anchor-border: #0284c7;
  --thread-anchor-color: #0c2340;
  --modal-selected-bg: #e0f2fe;
  --modal-selected-border: #0284c7;
  --modal-selected-color: #0c2340;
  --secondary: #cffafe;
  --secondary-hover: #a5f3fc;
  --secondary-border: #67e8f9;
  --secondary-text: #0e4f60;
  --secondary-light: #e0fafb;
}

[data-theme="forest"] {
  --hdr-bg: #14532d;
  --hdr-color: #dcfce7;
  --page-bg: #f0fdf4;
  --doc-bg: #fff;
  --doc-color: #14532d;
  --heading-color: #052e16;
  --heading-color-2: #14532d;
  --sidebar-bg: #f0fdf4;
  --sidebar-border: #86efac;
  --accent: #15803d;
  --accent-hover: #166534;
  --accent-light: #dcfce7;
  --accent-text: #15803d;
  --border: #86efac;
  --text-muted: #16a34a;
  --text-dim: #86efac;
  --card-bg: #fff;
  --card-border: #86efac;
  --input-border: #6ee7b7;
  --mark-bg: #fef08a;
  --mark-border: #eab308;
  --mark-hover-bg: #fde047;
  --mark-active-shadow: #eab308;
  --author-bar-bg: #f0fdf4;
  --author-bar-border: #86efac;
  --resizer-hover: #15803d;
  --thread-anchor-bg: #dcfce7;
  --thread-anchor-border: #16a34a;
  --thread-anchor-color: #052e16;
  --modal-selected-bg: #dcfce7;
  --modal-selected-border: #16a34a;
  --modal-selected-color: #052e16;
  --secondary: #d1fae5;
  --secondary-hover: #a7f3d0;
  --secondary-border: #6ee7b7;
  --secondary-text: #065f36;
  --secondary-light: #ecfdf5;
}

/* ── Base ────────────────────────────────────────────────────────────────── */

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--page-bg);
  color: var(--doc-color);
  height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--hdr-bg);
  color: var(--hdr-color);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

header span {
  opacity: 0.5;
  font-weight: 400;
}

.header-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.view-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 3px;
  gap: 2px;
}

.view-toggle button {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.4px;
  transition: background 0.15s, color 0.15s;
}

.view-toggle button.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.view-toggle button:hover:not(.active) {
  color: rgba(255, 255, 255, 0.8);
}

/* Theme selector */
.theme-select {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.85);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  cursor: pointer;
  outline: none;
  transition: background 0.15s;
}

.theme-select:hover {
  background: rgba(255, 255, 255, 0.18);
}


#author-display {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

#author-display strong {
  color: rgba(255, 255, 255, 0.9);
}

#author-display button {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
}

#author-display button:hover {
  color: #fff;
  text-decoration: underline;
}

#author-display a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

#author-display a:hover {
  color: #fff;
  text-decoration: underline;
}

/* Markdown source view */
.md-source {
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--doc-color);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  padding: 0;
}

/* Markdown view block highlight (inside <pre>) */
.md-source mark.cmt-highlight {
  background: var(--mark-bg);
  border-bottom: 2px solid var(--mark-border);
  cursor: pointer;
  border-radius: 2px;
  padding: 1px 0;
  transition: background 0.15s;
}

.md-source mark.cmt-highlight:hover {
  background: var(--mark-hover-bg);
}

.md-source mark.cmt-highlight.active {
  background: var(--mark-hover-bg);
  box-shadow: 0 0 0 2px var(--mark-active-shadow);
}


.layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Document pane */
.doc-pane {
  flex: 1;
  overflow-y: auto;
  padding: 40px 60px;
  background: var(--doc-bg);
  position: relative;
}

.doc-content {
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.75;
  padding-left: 20px;
  /* gutter for annotation bars */
}

/* ── Markdown content styles ─────────────────────────────────────────────── */

.doc-content h1,
.doc-content h2,
.doc-content h3,
.doc-content h4,
.doc-content h5,
.doc-content h6 {
  position: relative;
}

.heading-anchor {
  display: inline-flex;
  align-items: center;
  margin-left: 0.4em;
  color: var(--heading-color-2);
  opacity: 0;
  text-decoration: none;
  vertical-align: middle;
  transition: opacity 0.15s;
}

.doc-content h1:hover .heading-anchor,
.doc-content h2:hover .heading-anchor,
.doc-content h3:hover .heading-anchor,
.doc-content h4:hover .heading-anchor,
.doc-content h5:hover .heading-anchor,
.doc-content h6:hover .heading-anchor {
  opacity: 0.5;
}

.heading-anchor:hover {
  opacity: 1 !important;
}

.doc-content h1 {
  font-size: 1.9em;
  font-weight: 700;
  margin: 0 0 0.4em;
  color: var(--heading-color);
  line-height: 1.2;
}

.doc-content h2 {
  font-size: 1.4em;
  font-weight: 700;
  margin: 2em 0 0.5em;
  color: var(--heading-color-2);
  line-height: 1.3;
}

.doc-content h3 {
  font-size: 1.15em;
  font-weight: 700;
  margin: 1.6em 0 0.4em;
  color: var(--heading-color-2);
}

.doc-content h4 {
  font-size: 1em;
  font-weight: 700;
  margin: 1.4em 0 0.3em;
  color: var(--heading-color-2);
}

.doc-content h5,
.doc-content h6 {
  font-size: 0.9em;
  font-weight: 700;
  margin: 1.2em 0 0.3em;
  color: var(--text-muted);
}

.doc-content p {
  margin: 0 0 1em;
}

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

.doc-content ul,
.doc-content ol {
  margin: 0 0 1em 1.5em;
}

.doc-content li {
  margin-bottom: 0.25em;
}

.doc-content li>ul,
.doc-content li>ol {
  margin: 0.25em 0 0.25em 1.25em;
}

.doc-content blockquote {
  margin: 0 0 1em;
  padding: 0.5em 0 0.5em 1em;
  border-left: 3px solid var(--border);
  color: var(--text-muted);
  font-style: italic;
}

.doc-content blockquote p {
  margin-bottom: 0;
}

.doc-content pre {
  margin: 0 0 1em;
  padding: 1em 1.25em;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: visible;
  /* keep ::before gutter bar visible; code handles scrolling */
}

.doc-content pre code {
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  font-size: 0.85em;
  background: none;
  border: none;
  padding: 0;
  color: var(--doc-color);
  display: block;
  overflow-x: auto;
}

.doc-content code {
  font-family: 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  font-size: 0.875em;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.15em 0.4em;
  color: var(--doc-color);
}

.doc-content a {
  color: var(--accent);
  text-decoration: none;
}

.doc-content a:hover {
  text-decoration: underline;
}

.doc-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1em;
  font-size: 0.9em;
}

.doc-content th,
.doc-content td {
  border: 1px solid var(--border);
  padding: 0.5em 0.75em;
  text-align: left;
}

.doc-content th {
  background: var(--page-bg);
  font-weight: 600;
}

.doc-content tr:nth-child(even) td {
  background: var(--page-bg);
}

.doc-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* ── Block highlight (comment anchors) ───────────────────────────────────── */
/* Bar lives in the 20px gutter to the LEFT of text via ::before.
   No margin/padding/box-shadow changes on the element itself. */

.cmt-block-highlight {
  position: relative;
  cursor: pointer;
  transition: background 0.15s;
}

.cmt-block-highlight::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--mark-border);
  border-radius: 2px;
  pointer-events: none;
  opacity: 0.6;
}

/* Message count — sits just left of the bar, aligned to the first line */
.cmt-block-highlight::after {
  content: attr(data-cmt-count);
  position: absolute;
  left: -36px;
  top: 0;
  width: 18px;
  text-align: right;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--mark-border);
  pointer-events: none;
  opacity: 0.55;
}

.cmt-block-highlight:hover {
  background: rgba(234, 179, 8, 0.08);
}

.cmt-block-highlight:hover::before,
.cmt-block-highlight:hover::after {
  opacity: 1;
}

.cmt-block-highlight.cmt-block-active {
  background: rgba(234, 179, 8, 0.13);
}

.cmt-block-highlight.cmt-block-active::before {
  opacity: 1;
  width: 3px;
}

.cmt-block-highlight.cmt-block-active::after {
  opacity: 1;
}



/* For list items, the default left:-16px bar lands on the bullet marker.
   Shift both the bar and count badge further left to clear it. */
li.cmt-block-highlight::before {
  left: -26px;
}

li.cmt-block-highlight::after {
  left: -46px;
}


/* Add comment button */
#add-comment-btn {
  position: fixed;
  display: none;
  background: var(--hdr-bg);
  color: var(--hdr-color);
  border: none;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  z-index: 100;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transform: translateX(-50%);
}

#add-comment-btn:hover {
  opacity: 0.9;
}

/* Sidebar resizer */
.sidebar-resizer {
  width: 4px;
  background: var(--border);
  cursor: col-resize;
  flex-shrink: 0;
  transition: background 0.15s;
}

.sidebar-resizer:hover,
.sidebar-resizer.dragging {
  background: var(--resizer-hover);
}

/* Sidebar toggle button in header */
.btn-sidebar-toggle {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: rgba(255, 255, 255, 0.7);
  padding: 4px 9px;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}

.btn-sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

/* Sidebar */
.sidebar {
  width: 320px;
  background: var(--sidebar-bg);
  border-left: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.2s ease;
}

.sidebar.collapsed {
  width: 0 !important;
  min-width: 0;
  border-left: none;
}

.sidebar-resizer.hidden {
  display: none;
}

.sidebar-header {
  padding: 16px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#comment-count {
  background: var(--border);
  color: var(--doc-color);
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 11px;
}

.comments-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.comment-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.comment-card:hover {
  border-color: var(--accent);
}

.comment-card.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.comment-card.orphaned {
  border-color: #fca5a5;
  background: #fff7f7;
}

.comment-anchor {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.comment-anchor.orphaned-label {
  color: #ef4444;
  font-style: normal;
  font-weight: 600;
}

.comment-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--doc-color);
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}

.comment-date {
  font-size: 10px;
  color: var(--text-dim);
}

.delete-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 4px;
  border-radius: 3px;
  line-height: 1;
}

.delete-btn:hover {
  color: #ef4444;
  background: #fee2e2;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  padding: 40px 20px;
}

/* Thread list card extras */
.reply-count {
  background: var(--accent-light);
  color: var(--accent-text);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 10px;
  font-weight: 700;
  margin-left: auto;
  margin-right: 6px;
  white-space: nowrap;
}

.thread-sep {
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
  margin: 4px 0;
  letter-spacing: 2px;
}

.comment-text.last {
  color: var(--text-muted);
  font-style: italic;
}

/* Thread conversation view */
.thread-back {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.thread-back:hover {
  color: var(--accent-hover);
}

.thread-anchor {
  background: var(--thread-anchor-bg);
  border-left: 3px solid var(--thread-anchor-border);
  padding: 8px 10px;
  font-size: 12px;
  color: var(--thread-anchor-color);
  border-radius: 3px;
  margin: 12px;
  font-style: italic;
}

.message-bubble {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 0 12px 8px;
}

.message-bubble .message-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--doc-color);
}

.message-bubble .message-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
}

.message-author {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
}

.message-bubble .message-date {
  font-size: 10px;
  color: var(--text-dim);
}

.message-meta-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.message-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.message-bubble:hover .message-actions {
  opacity: 1;
  pointer-events: auto;
}

.msg-action-link {
  font-size: 10px;
  color: var(--text-dim);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  line-height: 1;
}

.msg-action-link:hover {
  color: var(--doc-color);
}

.msg-delete-link {
  color: #c0392b99;
}

.msg-delete-link:hover {
  color: #c0392b;
}

.msg-edit-form {
  margin-top: 8px;
}

.msg-edit-form textarea {
  width: 100%;
  box-sizing: border-box;
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--doc-color);
  resize: vertical;
  font-family: inherit;
  line-height: 1.5;
}

.msg-edit-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.msg-edit-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  margin-top: 6px;
}

.msg-edit-actions .btn-cancel {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
}

.msg-edit-actions .btn-cancel:hover {
  background: var(--border);
  color: var(--doc-color);
}

.msg-edit-actions .btn-save {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 5px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-weight: 500;
}

.msg-edit-actions .btn-save:hover {
  background: var(--accent-hover);
}

.msg-edit-actions .btn-save:disabled {
  opacity: 0.5;
  cursor: default;
}

.msg-delete-confirm {
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
}

/* Reply area */
.reply-area {
  border-top: 1px solid var(--border);
  padding: 12px;
  background: var(--card-bg);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reply-area textarea {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  resize: none;
  outline: none;
  line-height: 1.5;
  min-height: 64px;
  background: var(--doc-bg);
  color: var(--doc-color);
}

.reply-area textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.reply-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-delete-thread {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
}

.btn-delete-thread:hover {
  color: #ef4444;
}

.btn-reply {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

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

.btn-reply:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Sidebar tabs */
.sidebar-tabs {
  display: flex;
  flex: 1;
}

.sidebar-tab {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0 4px 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.sidebar-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.sidebar-tab:hover:not(.active) {
  color: var(--doc-color);
}

.tab-count {
  background: var(--border);
  color: var(--doc-color);
  border-radius: 10px;
  padding: 1px 6px;
  font-size: 10px;
  margin-left: 4px;
}

.sidebar-tab.active .tab-count {
  background: var(--accent-light);
  color: var(--accent-text);
}


.resolved-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent-text);
  background: var(--accent-light);
  border-radius: 10px;
  padding: 1px 7px;
  margin-left: auto;
  margin-right: 6px;
  white-space: nowrap;
}

/* Resolved banner inside thread view */
.resolved-banner {
  background: var(--author-bar-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  margin: 0 12px 8px;
  font-size: 12px;
  color: var(--doc-color);
}

.resolved-banner strong {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

/* Split resolve button */
.resolve-btn-group {
  position: relative;
  display: flex;
}

.btn-resolve-main {
  background: var(--secondary);
  color: var(--secondary-text);
  border: 1px solid var(--secondary-border);
  border-right: none;
  padding: 6px 11px;
  border-radius: 6px 0 0 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.btn-resolve-main:hover {
  background: var(--secondary-hover);
}

.btn-resolve-arrow {
  background: var(--secondary);
  color: var(--secondary-text);
  border: 1px solid var(--secondary-border);
  padding: 6px 7px;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  font-size: 10px;
  line-height: 1;
}

.btn-resolve-arrow:hover {
  background: var(--secondary-hover);
}

.resolve-dropdown {
  position: absolute;
  bottom: calc(100% + 4px);
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  overflow: hidden;
  z-index: 50;
  min-width: 200px;
}

.resolve-dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--doc-color);
  cursor: pointer;
  white-space: nowrap;
}

.resolve-dropdown button:hover {
  background: var(--page-bg);
}

/* Resolve-with-comment inline form */
.resolve-form {
  border-top: 1px dashed var(--secondary-border);
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.resolve-form textarea {
  width: 100%;
  border: 1px solid var(--secondary-border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  font-family: inherit;
  resize: none;
  outline: none;
  min-height: 60px;
  background: var(--secondary-light);
  color: var(--secondary-text);
}

.resolve-form textarea:focus {
  border-color: var(--secondary-border);
  box-shadow: 0 0 0 2px var(--secondary);
}

.resolve-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.btn-resolve-cancel {
  background: none;
  border: 1px solid var(--input-border);
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  color: var(--doc-color);
}

.btn-resolve-cancel:hover {
  background: var(--page-bg);
}

.btn-resolve-confirm {
  background: var(--secondary-border);
  color: var(--secondary-text);
  border: none;
  padding: 5px 11px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.btn-resolve-confirm:hover {
  background: var(--secondary-hover);
}

/* Block multi-thread view */
.block-thread-section {
  display: flex;
  flex-direction: column;
}

.block-thread-section .thread-anchor {
  margin: 12px 12px 6px;
}

.block-thread-section .message-bubble {
  margin: 0 12px 6px;
}

.block-thread-sep {
  border-top: 1px solid var(--border);
  margin: 8px 0;
}

.block-thread-reply {
  padding: 6px 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.block-thread-reply textarea {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
  font-family: inherit;
  resize: none;
  outline: none;
  line-height: 1.5;
  background: var(--doc-bg);
  color: var(--doc-color);
}

.block-thread-reply textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.block-thread-reply-actions {
  display: flex;
  justify-content: flex-end;
}

/* Expand / collapse thread buttons */
.expand-thread-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
  white-space: nowrap;
}

.expand-thread-btn:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.collapse-thread-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.collapse-thread-btn:hover {
  color: var(--doc-color);
}

/* Expanded card */
.comment-card.expanded {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.comment-card.expanded .comment-anchor {
  margin-bottom: 8px;
}

/* Message bubbles inside expanded card (no outer margin needed) */
.comment-card .message-bubble {
  margin: 0 0 6px;
  border-radius: 6px;
}

.comment-card .message-bubble:last-of-type {
  margin-bottom: 0;
}

/* Inline reply form inside card */
.inline-reply-form {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.inline-reply-form textarea {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 12px;
  font-family: inherit;
  resize: none;
  outline: none;
  line-height: 1.5;
  background: var(--doc-bg);
  color: var(--doc-color);
}

.inline-reply-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.inline-reply-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
}

/* Inline resolved banner (inside card, no outer margin) */
.resolved-banner.inline-resolved {
  margin: 0 0 8px;
}

/* Card footer: collapse + delete */
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* Add comment modal */
#comment-modal,
#name-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#comment-modal.open,
#name-modal.open {
  display: flex;
}

.modal-box {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 24px;
  width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-box h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--heading-color);
}

.modal-box p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.modal-selected-text {
  background: var(--modal-selected-bg);
  border-left: 3px solid var(--modal-selected-border);
  padding: 8px 10px;
  font-size: 12px;
  color: var(--modal-selected-color);
  border-radius: 3px;
  margin-bottom: 14px;
  white-space: pre-wrap;
  max-height: 80px;
  overflow-y: auto;
}

.cross-block-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-style: italic;
}

.modal-box input[type="text"],
.modal-box textarea {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 10px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  background: var(--doc-bg);
  color: var(--doc-color);
}

.modal-box textarea {
  resize: vertical;
  min-height: 80px;
}

.modal-box input[type="text"]:focus,
.modal-box textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 12px;
}

.btn-cancel {
  background: none;
  border: 1px solid var(--input-border);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--doc-color);
}

.btn-cancel:hover {
  background: var(--page-bg);
}

.btn-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

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

.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Index pages ─────────────────────────────────────────────────────────── */

.index-page {
  min-height: 100vh;
  background: var(--page-bg);
  padding: 48px 24px;
}

.index-container {
  max-width: 760px;
  margin: 0 auto;
}

.index-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--heading-color);
  margin-bottom: 32px;
}

.index-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.index-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--doc-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.index-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.index-card__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  width: 32px;
  text-align: center;
}

.index-card__body {
  flex: 1;
  min-width: 0;
}

.index-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-text);
  margin-bottom: 2px;
}

.index-card:hover .index-card__title {
  text-decoration: underline;
}

.index-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.index-card__arrow {
  color: var(--text-muted);
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ── Breadcrumbs ─────────────────────────────────────────────────────────── */

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumbs a {
  color: var(--accent-text);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--text-muted) !important;
  font-weight: 400 !important;
}