body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #f4f6f9;
  color: #333;
}

.navbar {
  background: #222;
  color: white;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar a {
  color: white;
  margin-right: 15px;
  text-decoration: none;
}

.navbar a.active {
  text-decoration: underline;
}

.container {
  flex: 1;
  display: flex;
  height: calc(100vh - 50px);
}

.sidebar {
  width: 300px;
  background: #fff;
  border-right: 1px solid #ddd;
  padding: 10px;
  overflow-y: auto;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.main textarea {
  flex: 1;
  font-size: 1rem;
  padding: 20px;
  border: none;
  outline: none;
  resize: none;
  background: #fff;
}

h2 {
  margin: 10px 0;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  padding: 6px;
  border-radius: 4px;
  cursor: pointer;
}

li:hover {
  background: #eee;
}

li.active {
  background: #dfefff;
}

.delete {
  color: red;
  float: right;
  cursor: pointer;
}

input[type=text] {
  width: 100%;
  padding: 6px;
  margin: 6px 0;
  box-sizing: border-box;
}

.editable {
  display: inline-block;
}

.editable[contenteditable="true"] {
  background: #fff9c4;
  padding: 2px 4px;
}

#note-title {
  padding: 10px 20px;
  background: #fff;
  border-bottom: 1px solid #ccc;
  margin: 0;
}

body.notes-page {
  background: #f7f6f3;
  color: #2f3437;
}

body.notes-page .navbar {
  background: #1f1f1f;
  position: sticky;
  top: 0;
  z-index: 10;
}

body.notes-page .notes-shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  flex: 1;
  min-height: 0;
}

body.notes-page .notes-sidebar {
  background: #f2f1ed;
  border-right: 1px solid #dedcd5;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-y: auto;
}

body.notes-page .workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

body.notes-page .workspace-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b6e70;
}

body.notes-page .workspace-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: #0f1115;
}

body.notes-page .sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

body.notes-page .section-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: #444;
}

body.notes-page .sidebar-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d4d2cc;
  border-radius: 8px;
  background: #fff;
  box-sizing: border-box;
  font-size: 0.9rem;
}

body.notes-page .sidebar-input:focus {
  outline: 2px solid #4586ff33;
  border-color: #4586ff;
}

body.notes-page .sidebar-input.hidden {
  display: none;
}

body.notes-page .icon-button,
body.notes-page .primary-button {
  border: none;
  background: transparent;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  color: #333;
  transition: background 0.2s ease;
}

body.notes-page .icon-button:hover,
body.notes-page .primary-button:hover {
  background: #e4e3df;
}

body.notes-page .icon-button.subtle {
  color: #8f8f8f;
  padding: 6px;
}

body.notes-page .primary-button {
  background: #2f3437;
  color: #fff;
  padding: 6px 12px;
  font-weight: 600;
}

body.notes-page .primary-button[disabled] {
  background: #d3d0c9;
  color: #8b8984;
  cursor: not-allowed;
}

body.notes-page .folders-list,
body.notes-page .notes-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

body.notes-page .folder-item,
body.notes-page .note-item {
  background: transparent;
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  transition: background 0.2s ease;
}

body.notes-page .folder-item:hover,
body.notes-page .note-item:hover {
  background: #e7e5df;
}

body.notes-page .folder-item.active,
body.notes-page .note-item.active {
  background: #d9e4ff;
  box-shadow: inset 0 0 0 1px #8aa9ff;
}

body.notes-page .folder-content,
body.notes-page .note-item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

body.notes-page .folder-content {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

body.notes-page .folder-icon {
  font-size: 1.1rem;
}

body.notes-page .note-item-title {
  font-weight: 600;
  color: #1b1f23;
}

body.notes-page .note-item-meta {
  font-size: 0.75rem;
  color: #737373;
}

body.notes-page .note-item.hidden,
body.notes-page .folder-item.hidden {
  display: none;
}

body.notes-page .notes-list.empty::before {
  content: 'Select a space to view its pages.';
  font-size: 0.85rem;
  color: #7a7a7a;
}

body.notes-page .notes-editor {
  background: #fbfbf9;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

body.notes-page .sidebar-toggle {
  display: none;
  align-self: flex-start;
  margin: 16px 24px 0 24px;
  background: #ffffff;
  border: 1px solid #d4d2cc;
  border-radius: 10px;
  font-weight: 600;
  gap: 6px;
}

body.notes-page .editor-wrapper {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px 48px 120px 48px;
  height: 100%;
  overflow-y: auto;
}

body.notes-page .editor-wrapper.hidden {
  display: none;
}

body.notes-page .empty-state {
  margin: auto;
  text-align: center;
  color: #6f6f6f;
}

body.notes-page .empty-state.hidden {
  display: none;
}

body.notes-page .note-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

body.notes-page .note-title {
  font-size: 2.2rem;
  font-weight: 600;
  outline: none;
  min-height: 42px;
}

body.notes-page .note-title:empty::before {
  content: attr(data-placeholder);
  color: #a7a7a7;
}

body.notes-page .note-meta {
  font-size: 0.85rem;
  color: #878787;
}

body.notes-page .note-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid #e0dfda;
  padding: 8px 12px;
  border-radius: 12px;
  width: fit-content;
  box-shadow: 0 8px 16px rgba(15, 17, 21, 0.08);
}

body.notes-page .note-toolbar .toolbar-icon {
  font-weight: 700;
}

body.notes-page .note-toolbar .toolbar-divider {
  width: 1px;
  height: 20px;
  background: #ddd;
  margin: 0 4px;
}

body.notes-page .note-content {
  flex: 1;
  min-height: 400px;
  font-size: 1rem;
  line-height: 1.6;
  outline: none;
  color: #2f3437;
}

body.notes-page .note-content:empty::before {
  content: attr(data-placeholder);
  color: #a7a7a7;
}

body.notes-page .note-content h1,
body.notes-page .note-content h2,
body.notes-page .note-content h3 {
  margin-top: 24px;
  margin-bottom: 12px;
  font-weight: 600;
}

body.notes-page .note-content h1 {
  font-size: 1.8rem;
}

body.notes-page .note-content h2 {
  font-size: 1.4rem;
}

body.notes-page .note-content blockquote {
  border-left: 3px solid #a2b3ff;
  padding-left: 12px;
  color: #5b5e63;
  margin: 20px 0;
  font-style: italic;
}

body.notes-page .note-content pre {
  background: #282c34;
  color: #f8f8f2;
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

body.notes-page .note-toolbar .note-image-input {
  display: none;
}

body.notes-page .note-content figure.note-image-block {
  margin: 24px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

body.notes-page .note-content figure.note-image-block img {
  max-width: 100%;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 17, 21, 0.18);
}

body.notes-page .note-content figure.note-image-block figcaption {
  font-size: 0.85rem;
  color: #6f7378;
  outline: none;
}

body.notes-page .note-content figure.note-image-block figcaption:empty::before {
  content: attr(data-placeholder);
  color: #b1b5ba;
}

body.notes-page .note-content .todo-line {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
}

body.notes-page .note-content .todo-line input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

body.notes-page .note-content .note-divider,
body.notes-page .note-content hr {
  border: none;
  height: 1px;
  background: #dedede;
  margin: 24px 0;
}

body.notes-page .slash-menu {
  position: absolute;
  background: #ffffff;
  border: 1px solid #e2e2e2;
  border-radius: 12px;
  box-shadow: 0 16px 32px rgba(15, 17, 21, 0.12);
  width: 260px;
  padding: 12px 0;
  display: none;
  flex-direction: column;
  z-index: 20;
}

body.notes-page .slash-menu.visible {
  display: flex;
}

body.notes-page .slash-hint {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7d7d7d;
  padding: 0 16px 8px;
}

body.notes-page #slash-options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

body.notes-page #slash-options li {
  padding: 10px 16px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

body.notes-page #slash-options li.active {
  background: #f2f6ff;
}

body.notes-page #slash-options li.empty {
  cursor: default;
  color: #9a9a9a;
}

body.notes-page .slash-option-label {
  font-weight: 600;
  color: #2f3437;
}

body.notes-page .slash-option-description {
  font-size: 0.85rem;
  color: #6d6f73;
}

body.notes-page .mobile-sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 17, 21, 0.32);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 9;
  display: none;
}

body.notes-page.notes-sidebar-open .mobile-sidebar-backdrop {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 900px) {
  body.notes-page .notes-shell {
    grid-template-columns: 1fr;
    position: relative;
  }

  body.notes-page .notes-sidebar {
    position: fixed;
    top: var(--notes-navbar-height, 56px);
    left: 0;
    width: min(88vw, 320px);
    height: calc(100vh - var(--notes-navbar-height, 56px));
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 0 12px 32px rgba(15, 17, 21, 0.18);
    z-index: 11;
    padding: 20px 18px 32px;
  }

  body.notes-page.notes-sidebar-open .notes-sidebar {
    transform: translateX(0);
  }

  body.notes-page.notes-sidebar-open {
    overflow: hidden;
  }

  body.notes-page .mobile-sidebar-backdrop {
    display: block;
  }

  body.notes-page .notes-editor {
    overflow: visible;
    min-height: calc(100vh - var(--notes-navbar-height, 56px));
  }

  body.notes-page .sidebar-toggle {
    display: inline-flex;
    align-items: center;
    position: fixed;
    top: calc(var(--notes-navbar-height, 56px) + 12px);
    left: auto;
    right: 16px;
    z-index: 12;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(6px);
  }

  body.notes-page.notes-sidebar-open .sidebar-toggle {
    background: #ffffff;
  }

  body.notes-page .editor-wrapper {
    padding: 24px 20px 80px 20px;
  }

  body.notes-page .note-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  body.notes-page .note-title {
    font-size: 1.8rem;
  }

  body.notes-page .note-toolbar {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 8px;
    overflow-x: auto;
  }

  body.notes-page .note-content {
    font-size: 0.95rem;
  }

  body.notes-page .empty-state {
    padding: 0 24px;
  }
}