:root {
  --bg: #f4f7f9;
  --panel: #ffffff;
  --text: #1a1c1f;
  --muted: #5e6670;
  --border: #d2dbe3;
  --accent: #2f6fdd;
  --scroll-track: #e7edf3;
  --scroll-thumb: #b9c5d3;
  --scroll-thumb-hover: #9fadc0;
  --menu-item-height: 34px;
}

body[data-theme="night"] {
  --bg: #0f1318;
  --panel: #151c24;
  --text: #ecf0f4;
  --muted: #a8b0ba;
  --border: #2d3742;
  --accent: #5ea0ff;
  --scroll-track: #1f2832;
  --scroll-thumb: #4d6178;
  --scroll-thumb-hover: #607792;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) var(--scroll-track);
}

*::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}

*::-webkit-scrollbar-track {
  background: var(--scroll-track);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border: 2px solid var(--scroll-track);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb:hover {
  background: var(--scroll-thumb-hover);
}

.hidden {
  display: none !important;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 85%, #dfe6ec 15%) 100%);
  color: var(--text);
}

#app-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: 48px 1fr 34px;
  grid-template-areas:
    "topbar topbar"
    "pane editor"
    "footer footer";
  width: 100%;
  height: 100%;
}

#app-shell.pane-hidden {
  grid-template-columns: 1fr;
  grid-template-areas:
    "topbar"
    "editor"
    "footer";
}

#topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  padding: 6px 12px;
}

#hamburger {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

#status-strip {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 13px;
}

#active-title {
  color: var(--text);
  font-weight: 500;
  border-radius: 6px;
  padding: 2px 6px;
  cursor: text;
}

#active-title:hover,
#active-title:focus-visible {
  background: color-mix(in srgb, var(--accent) 12%, transparent 88%);
  outline: none;
}

#active-title-input {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  padding: 2px 6px;
  min-width: 180px;
}

#active-title-input.hidden {
  display: none;
}

#active-title.hidden {
  display: none;
}

#file-pane {
  grid-area: pane;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 96%, #d9e3ef 4%);
  overflow: auto;
  padding: 10px;
}

#file-pane.hidden {
  display: none;
}

.pane-section {
  margin-bottom: 12px;
}

.pane-section label {
  display: block;
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--muted);
}

#new-doc-btn {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  padding: 8px;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

#new-doc-btn:hover {
  background: color-mix(in srgb, var(--accent) 12%, var(--panel) 88%);
}

.inline-controls {
  display: flex;
  gap: 6px;
}

.inline-controls input,
.inline-controls button,
#pane-actions button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 7px;
  padding: 6px;
}

#pane-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

#tag-filter-btn.active {
  background: #1da7a2;
  border-color: #1da7a2;
  color: #f2fffe;
}

body[data-theme="night"] #tag-filter-btn.active {
  background: #22b8b1;
  border-color: #22b8b1;
  color: #041615;
}

#active-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tag-pill {
  background: color-mix(in srgb, var(--accent) 20%, var(--panel) 80%);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-pill button {
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

#file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#file-list li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  background: var(--panel);
  cursor: pointer;
  font-size: 13px;
}

#file-list li.active {
  border-color: var(--accent);
}

#file-list li.selected {
  background: color-mix(in srgb, var(--accent) 14%, var(--panel) 86%);
}

#file-list li.active.selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent 60%);
}

#file-list li small {
  display: block;
}

.doc-search-preview {
  margin-top: 4px;
  color: var(--muted);
}

.doc-preview-hit {
  background: color-mix(in srgb, #f5a623 75%, transparent 25%);
  border-radius: 3px;
  padding: 0 1px;
}

#editor-wrap {
  grid-area: editor;
  background: transparent;
  padding: 14px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#search-bar {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  padding: 8px;
}

#search-bar input,
#search-bar select,
#search-bar button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 7px;
  padding: 6px 8px;
}

#search-prev-btn,
#search-next-btn,
#search-close-btn {
  width: 34px;
  padding: 0;
  text-align: center;
}

#editor-shell {
  position: relative;
  width: 100%;
  height: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  overflow: hidden;
}

#editor-view,
#editor-input {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 14px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow: auto;
  word-wrap: break-word;
}

#line-number-gutter {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 44px;
  padding: 14px 6px 14px 0;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 94%, var(--bg) 6%);
  color: var(--muted);
  font-size: 12px;
  line-height: 24px;
  text-align: right;
  overflow: hidden;
  pointer-events: none;
  display: none;
  z-index: 3;
}

#line-number-gutter .line-number {
  height: 24px;
}

body[data-column-numbers="enabled"] #line-number-gutter {
  display: block;
}

body[data-column-numbers="enabled"] #editor-view,
body[data-column-numbers="enabled"] #editor-input {
  padding-left: 56px;
}

#editor-view {
  pointer-events: auto;
  white-space: normal;
  z-index: 2;
}

#editor-input {
  resize: none;
  z-index: 3;
  color: var(--text);
  caret-color: var(--text);
}

#editor-input::selection {
  background: color-mix(in srgb, var(--accent) 30%, transparent 70%);
}

#editor-view .md-link {
  color: inherit;
  cursor: pointer;
}

#editor-view a {
  color: color-mix(in srgb, var(--accent) 75%, var(--text) 25%);
  text-decoration: underline;
}

#editor-view p {
  margin: 0 0 8px;
}

#editor-view h1,
#editor-view h2,
#editor-view h3,
#editor-view h4,
#editor-view h5,
#editor-view h6 {
  margin: 10px 0 6px;
  line-height: 1.3;
}

#editor-view h1 {
  font-size: 2em;
}

#editor-view h2 {
  font-size: 1.7em;
}

#editor-view h3 {
  font-size: 1.45em;
}

#editor-view h4 {
  font-size: 1.28em;
}

#editor-view h5 {
  font-size: 1.12em;
}

#editor-view h6 {
  font-size: 1em;
}

#editor-view blockquote {
  margin: 8px 0;
  border-left: 3px solid var(--border);
  padding: 0 0 0 8px;
  color: var(--muted);
}

#editor-view ul,
#editor-view ol {
  margin: 8px 0;
  padding-left: 22px;
}

#editor-view hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 10px 0;
}

#editor-view pre {
  margin: 8px 0;
  padding: 8px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 8%, var(--panel) 92%);
  border: 1px solid var(--border);
  overflow: auto;
  white-space: pre;
}

#editor-view code {
  background: color-mix(in srgb, var(--accent) 10%, var(--panel) 90%);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 3px;
}

#editor-view pre code {
  border: 0;
  background: transparent;
  padding: 0;
}

#editor-view table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0;
  table-layout: fixed;
}

#editor-view th,
#editor-view td {
  border: 1px solid var(--border);
  padding: 4px 6px;
  vertical-align: top;
  overflow-wrap: anywhere;
}

#editor-view th {
  background: color-mix(in srgb, var(--accent) 10%, var(--panel) 90%);
  text-align: left;
}

#editor-view .ProseMirror {
  min-height: 100%;
  outline: none;
  white-space: pre-wrap;
  word-wrap: break-word;
}

#editor-view .ProseMirror-selectednode {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent 55%);
}

#editor-view .md-inline-image {
  display: block;
  width: auto;
  height: auto;
  max-width: none;
  max-height: none;
  vertical-align: top;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgb(0 0 0 / 35%);
}

.modal-backdrop.hidden {
  display: none;
}

.modal-panel {
  width: min(420px, calc(100vw - 30px));
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 14px;
}

.modal-panel h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.modal-panel p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.modal-panel input,
.modal-panel select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  padding: 8px;
}

.modal-panel #modal-pick-file {
  margin-top: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}

.modal-panel .hidden {
  display: none;
}

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

.modal-actions button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
}

#editor-view .md-placeholder {
  color: var(--muted);
}

#footer {
  grid-area: footer;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 12px;
  border-top: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 12px;
}

#view-mode-tabs {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

#view-mode-tabs button {
  border: 0;
  border-right: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  padding: 3px 10px;
  font-size: 12px;
  cursor: pointer;
}

#view-mode-tabs button:last-child {
  border-right: 0;
}

#view-mode-tabs button.active {
  background: color-mix(in srgb, var(--accent) 14%, transparent 86%);
  color: var(--text);
  font-weight: 500;
}

#footer-format-mode {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.fmt-badge {
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 14%, transparent 86%);
  color: var(--text);
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  font-weight: 600;
  user-select: none;
}

body[data-view-mode="preview"] #editor-input {
  display: none;
}

body[data-view-mode="text-only"] #editor-view {
  display: none;
}

body[data-view-mode="text-only"] #editor-input {
  display: block;
}

:fullscreen #topbar,
:fullscreen #file-pane,
:fullscreen #footer,
:fullscreen #search-bar,
:fullscreen .context-menu,
:fullscreen .modal-backdrop {
  display: none !important;
}

:fullscreen #app-shell {
  grid-template-columns: 1fr !important;
  grid-template-rows: 1fr !important;
  grid-template-areas: "editor" !important;
}

:fullscreen #editor-wrap {
  padding: 0;
  gap: 0;
}

:fullscreen #editor-shell {
  border: 0;
  border-radius: 0;
}

.context-menu {
  position: fixed;
  z-index: 1000;
  width: 240px;
  max-height: 70vh;
  overflow-y: auto;
  overflow-x: visible;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgb(0 0 0 / 18%);
  padding: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.context-menu.hidden {
  display: none;
}

.context-menu::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.context-menu button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 7px;
  min-height: var(--menu-item-height);
  border-radius: 6px;
  cursor: pointer;
}

.context-menu button:hover {
  background: color-mix(in srgb, var(--accent) 16%, transparent 84%);
}

.menu-shortcut {
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
  margin-left: auto;
}

.context-menu hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 8px 0;
}

#link-actions-separator.hidden {
  display: none;
}

.sub-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
}

.menu-item-with-submenu {
  margin-top: 4px;
  position: relative;
}

.menu-item-with-submenu .submenu-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.menu-item-with-submenu .submenu-arrow {
  color: var(--muted);
  font-size: 11px;
}

.menu-item-with-submenu .submenu-pane {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  max-height: 70vh;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 10px 26px rgb(0 0 0 / 18%);
  padding: 8px;
  z-index: 1002;
}

.menu-item-with-submenu.open .submenu-pane {
  display: block;
}

.emoji-panel {
  padding-bottom: 10px;
}

#emoji-search {
  margin-bottom: 10px;
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 6px;
  max-height: 100%;
  overflow-y: auto;
  padding-right: 4px;
}

.emoji-grid button {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 6%, var(--panel) 94%);
  border-radius: 6px;
  font-size: 18px;
  line-height: 1;
  height: 28px;
  padding: 0;
  cursor: pointer;
}

.emoji-grid button:hover {
  background: color-mix(in srgb, var(--accent) 20%, var(--panel) 80%);
}

.tags-panel {
  width: min(480px, calc(100vw - 30px));
}

.tags-chip-list {
  min-height: 44px;
  max-height: 160px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tags-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel) 90%);
  border-radius: 999px;
  padding: 2px 6px 2px 8px;
  font-size: 12px;
}

.tags-chip-sep {
  width: 1px;
  height: 14px;
  background: var(--border);
  margin: 0 6px;
}

.tags-chip-remove {
  width: 18px;
  height: 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
}

.tag-filter-panel {
  width: min(520px, calc(100vw - 30px));
}

.tag-filter-section {
  margin-bottom: 10px;
}

.tag-filter-section h4 {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
}

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text);
}

.switch-row input {
  width: 38px;
  height: 20px;
}

.tag-results-list {
  min-height: 44px;
  max-height: 180px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-result-chip {
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel) 90%);
  color: var(--text);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
  cursor: pointer;
}

.tag-result-chip:hover {
  background: color-mix(in srgb, var(--accent) 18%, var(--panel) 82%);
}

@media (max-width: 900px) {
  :root {
    --menu-item-height: 42px;
  }

  #app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: 48px 1fr auto;
    grid-template-areas:
      "topbar"
      "editor"
      "footer";
    position: relative;
  }

  #file-pane {
    position: fixed;
    top: 48px;
    left: 0;
    bottom: 0;
    z-index: 900;
    width: min(72vw, 248px);
    max-height: none;
    border-right: 1px solid var(--border);
    border-bottom: 0;
    box-shadow: 14px 0 34px rgb(0 0 0 / 22%);
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  #app-shell:not(.pane-hidden)::before {
    content: "";
    position: fixed;
    top: 48px;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 800;
    background: rgb(10 18 28 / 20%);
  }

  body[data-theme="night"] #app-shell:not(.pane-hidden)::before {
    background: rgb(0 0 0 / 36%);
  }

  #topbar {
    position: relative;
    z-index: 950;
    padding: 6px 8px;
  }

  #editor-wrap {
    padding: 10px;
  }

  #status-strip {
    min-width: 0;
  }

  #active-title {
    display: block;
    max-width: calc(100vw - 72px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  #editor-shell {
    min-height: 0;
  }

  #footer {
    flex-wrap: wrap;
    gap: 6px 10px;
    min-height: 42px;
    height: auto;
    padding: 5px 8px;
  }

  .context-menu {
    max-width: min(94vw, 360px);
  }

  .context-menu button {
    min-height: 42px;
  }
}