:root {
  --paper: #faf9f6;
  --paper-alt: #f1efe6;
  --ink: #1b1b18;
  --ash: #86847c;
  --ash-faint: #b3b0a5;
  --rule: #e4e1d8;
  --pine: #2f5d50;
  --pine-deep: #234840;
  --pine-soft: #e7efec;
  --amber: #e8a33d;
  --amber-soft: #fbead0;
  --radius: 6px;
  --shadow: 0 12px 36px rgba(27, 27, 24, 0.1);
}

* {
  box-sizing: border-box;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

html,
body,
#root {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, 'PingFang SC', sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 13px;
}

.serif {
  font-family: 'Fraunces', serif;
}

.mono {
  font-family: 'IBM Plex Mono', Consolas, monospace;
}

.catalog-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  color: var(--pine);
  background: var(--pine-soft);
  border: 1px solid rgba(47, 93, 80, 0.18);
  border-radius: 4px;
  padding: 1px 6px;
  white-space: nowrap;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Top bar ---------- */
.topbar {
  height: 58px;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  padding: 0 22px;
  gap: 22px;
  flex-shrink: 0;
}

.wordmark {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 600;
  font-size: 19px;
  color: var(--ink);
  white-space: nowrap;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
}

.wordmark .subtitle {
  font-family: 'IBM Plex Mono', monospace;
  font-style: normal;
  font-size: 10px;
  color: var(--ash);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.search-box {
  flex: 1;
  max-width: 540px;
  position: relative;
}

.search-box input {
  width: 100%;
  background: var(--paper-alt);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink);
  padding: 9px 14px 9px 38px;
  font-size: 13px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}

.search-box input::placeholder {
  color: var(--ash-faint);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
}

.search-box input:focus {
  border-color: var(--pine);
  background: var(--paper);
  box-shadow: 0 0 0 3px var(--pine-soft);
}

.search-box svg {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ash);
  pointer-events: none;
}

.upload-btn {
  margin-left: auto;
  background: var(--pine);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 9px 16px;
  font-size: 12.5px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: background 0.15s;
}

.upload-btn:hover {
  background: var(--pine-deep);
}

.reindex-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.reindex-message {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ash);
  white-space: nowrap;
}

.reindex-message.error {
  color: #b3432f;
}

/* ---------- Body layout ---------- */
.body {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: 272px;
  min-width: 272px;
  max-width: 272px;
  background: var(--paper-alt);
  border-right: 1px solid var(--rule);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 10px;
  flex-shrink: 0;
}

.sidebar-title {
  font-family: 'Fraunces', serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  padding: 4px 10px 12px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.sidebar-title .count {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--ash);
  font-size: 11px;
  font-weight: 400;
}

.tree-item {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink);
  white-space: nowrap;
  border-radius: 5px;
  user-select: none;
  min-width: 0;
}

.tree-item .foldername {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-item:hover {
  background: rgba(27, 27, 24, 0.045);
}

.tree-item.file-row.active {
  background: #fff;
  box-shadow: 0 0 0 1px var(--rule);
  font-weight: 500;
}

.tree-item.folder {
  color: var(--ash);
  font-weight: 500;
  font-size: 11.5px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.tree-children {
  overflow: hidden;
  padding-left: 14px;
}

.chevron {
  display: inline-flex;
  transition: transform 0.15s ease;
  color: var(--ash-faint);
  flex-shrink: 0;
}

.chevron.open {
  transform: rotate(90deg);
}

.file-row {
  padding-left: 20px;
}

.file-row .filename {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-icon {
  color: var(--ash);
  flex-shrink: 0;
}

/* ---------- Main ---------- */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.empty-state {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ash-faint);
  font-family: 'Fraunces', serif;
  font-size: 15px;
}

.doc-header {
  height: 54px;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  flex-shrink: 0;
}

.doc-path {
  color: var(--ash);
  font-size: 12.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.doc-path .sep {
  color: var(--ash-faint);
}

.doc-path .current {
  color: var(--ink);
  font-weight: 500;
}

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

.save-status {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--ash-faint);
  margin-right: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.save-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ash-faint);
}

.save-status.dirty {
  color: #a9762a;
}

.save-status.dirty .dot {
  background: var(--amber);
}

.save-status.saved {
  color: var(--pine);
}

.save-status.saved .dot {
  background: var(--pine);
}

.save-error {
  font-size: 11.5px;
  color: #a9401f;
  display: flex;
  align-items: center;
  gap: 4px;
}

.save-error button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  padding: 0;
}

.btn-save {
  background: var(--pine);
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 7px 15px;
  font-size: 12px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-save:hover {
  background: var(--pine-deep);
}

.btn-save:disabled {
  background: var(--ash-faint);
  cursor: default;
}

.btn-secondary {
  background: transparent;
  color: var(--ash);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 7px 15px;
  font-size: 12px;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--paper-alt);
}

.editor-area {
  flex: 1;
  display: flex;
  overflow: hidden;
  background: var(--paper);
}

.editor-area > div {
  flex: 1;
  min-width: 0;
}

.editor-area .cm-editor {
  height: 100%;
}

.image-preview-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  background: var(--paper);
  padding: 24px;
}

.image-preview-area img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.preview-area {
  flex: 1;
  overflow-y: auto;
  background: var(--paper);
  padding: 32px 40px;
}

.markdown-preview {
  max-width: 720px;
  margin: 0 auto;
  color: var(--ink);
  line-height: 1.7;
  font-size: 14px;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4 {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  color: var(--ink);
  margin: 1.4em 0 0.6em;
}

.markdown-preview h1 {
  font-size: 26px;
}

.markdown-preview h2 {
  font-size: 21px;
}

.markdown-preview h3 {
  font-size: 17px;
}

.markdown-preview p {
  margin: 0.8em 0;
}

.markdown-preview a {
  color: var(--pine);
}

.markdown-preview code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  background: var(--paper-alt);
  padding: 2px 5px;
  border-radius: 4px;
}

.markdown-preview pre {
  background: var(--paper-alt);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
}

.markdown-preview pre code {
  background: none;
  padding: 0;
}

.markdown-preview ul,
.markdown-preview ol {
  padding-left: 1.6em;
  margin: 0.8em 0;
}

.markdown-preview blockquote {
  border-left: 3px solid var(--rule);
  color: var(--ash);
  margin: 0.8em 0;
  padding: 2px 0 2px 16px;
}

.markdown-preview img {
  max-width: 100%;
  border-radius: var(--radius);
}

.markdown-preview table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.8em 0;
}

.markdown-preview th,
.markdown-preview td {
  border: 1px solid var(--rule);
  padding: 6px 10px;
  text-align: left;
}

/* ---------- Search overlay ---------- */
.search-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--paper);
  z-index: 10;
  overflow-y: auto;
}

.search-results-header {
  padding: 24px 30px 12px;
  color: var(--ash);
  font-size: 12.5px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.search-results-header .big-count {
  font-family: 'Fraunces', serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.result-item {
  padding: 16px 30px;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  transition: background 0.1s;
  display: flex;
  gap: 12px;
}

.result-item:hover {
  background: var(--paper-alt);
}

.result-body {
  flex: 1;
  min-width: 0;
}

.result-path {
  font-size: 12px;
  color: var(--ash);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.result-title {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  color: var(--ink);
}

.result-snippet {
  font-size: 12.5px;
  color: var(--ash);
  line-height: 1.65;
}

.result-snippet em {
  background: var(--amber-soft);
  color: #8a5a12;
  padding: 0 2px;
  border-radius: 2px;
  font-weight: 600;
  font-style: normal;
}

.no-results {
  padding: 60px 30px;
  text-align: center;
  color: var(--ash-faint);
  font-size: 13px;
}

.no-results .serif {
  display: block;
  font-size: 16px;
  color: var(--ash);
  margin-bottom: 6px;
}

/* ---------- Status bar ---------- */
.statusbar {
  height: 28px;
  background: var(--paper-alt);
  border-top: 1px solid var(--rule);
  color: var(--ash);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 18px;
  flex-shrink: 0;
}

/* ---------- Upload modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(27, 27, 24, 0.32);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--paper);
  border-radius: 10px;
  width: 460px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  margin: 0;
  font-family: 'Fraunces', serif;
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--ash);
  cursor: pointer;
  padding: 4px;
  display: flex;
}

.modal-body {
  padding: 22px;
}

.dropzone {
  border: 1.5px dashed var(--rule);
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  color: var(--ash);
  font-size: 12.5px;
  transition: all 0.15s;
  cursor: pointer;
}

.dropzone.dragover {
  border-color: var(--pine);
  background: var(--pine-soft);
  color: var(--pine-deep);
}

.dropzone svg {
  display: block;
  margin: 0 auto 12px;
  color: var(--ash-faint);
}

.dropzone.dragover svg {
  color: var(--pine);
}

.dropzone .hint {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  color: var(--ash-faint);
  margin-top: 4px;
}

.upload-error {
  margin-top: 12px;
  padding: 10px 12px;
  background: #fdece6;
  color: #a9401f;
  border-radius: 5px;
  font-size: 12px;
}

.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}