@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Lora:ital,wght@0,400;0,600;1,400&display=swap');

/* ===== RESET ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== THEME — DARK (default) ===== */
:root[data-theme="dark"] {
  --bg-primary: #0f1117;
  --bg-secondary: #161b22;
  --bg-sidebar: #13161d;
  --bg-hover: #1f2430;
  --border: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #58a6ff;
  --accent-green: #3fb950;
  --tag-bg: #1f2a3a;
  --tag-text: #79c0ff;
  --code-bg: #161b22;
  --search-bg: #21262d;
  --scrollbar: #30363d;
  --resize-handle: #30363d;
  --overlay-bg: rgba(0,0,0,0.5);
  --danger: #ff7b72;
  --danger-bg: #3d1a18;
  --success: #3fb950;
  --success-bg: #1a3d1f;
}

/* ===== THEME — LIGHT ===== */
:root[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-sidebar: #f0f2f5;
  --bg-hover: #e8ecf0;
  --border: #d0d7de;
  --text-primary: #1f2328;
  --text-secondary: #57606a;
  --text-muted: #9198a1;
  --accent: #0969da;
  --accent-green: #1a7f37;
  --tag-bg: #ddf4ff;
  --tag-text: #0969da;
  --code-bg: #f6f8fa;
  --search-bg: #ffffff;
  --scrollbar: #d0d7de;
  --resize-handle: #d0d7de;
  --overlay-bg: rgba(0,0,0,0.3);
  --danger: #cf222e;
  --danger-bg: #ffebe9;
  --success: #1a7f37;
  --success-bg: #dafbe1;
}

/* ===== BASE ===== */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Lora', Georgia, serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background 200ms ease, color 200ms ease;
  overflow: hidden;
  height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ===== LAYOUT ===== */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* --- Header --- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 20px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
  transition: background 200ms ease;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 auto;
}

.header-center {
  display: flex;
  justify-content: center;
  flex: 1 1 auto;
  max-width: 600px;
}

.header-right {
  display: flex;
  justify-content: flex-end;
  flex: 0 1 auto;
}

.hamburger-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.hamburger-btn:hover {
  color: var(--accent);
}

.sidebar-toggle-btn {
  display: flex;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 200ms ease;
}
.sidebar-toggle-btn:hover {
  color: var(--accent);
}
.sidebar-toggle-btn.active {
  color: var(--accent);
}

.header-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: opacity 200ms ease;
  text-decoration: none;
}
.header-logo:hover {
  opacity: 0.8;
  text-decoration: none;
}

.search-wrapper {
  width: 100%;
  max-width: 520px;
  position: relative;
  display: flex;
  align-items: center;
}

.search-wrapper .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
  z-index: 1;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.search-input-wrapper input {
  width: 100%;
  padding: 8px 14px 8px 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 200ms ease, background 200ms ease;
}

.search-input-wrapper input:focus {
  border-color: var(--accent);
}

.search-actions {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
}

.search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 150ms ease;
  padding: 0;
  flex-shrink: 0;
}

.search-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-secondary));
}

.search-btn.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 20%, var(--bg-secondary));
  color: var(--accent);
}

.header-menu {
  position: relative;
}

.header-menu-btn {
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border));
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease, transform 180ms ease;
}
.header-menu-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.header-menu-btn.active {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.header-menu-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 16px 36px rgba(0,0,0,0.28);
  min-width: 260px;
  z-index: 100;
  padding: 8px;
}
.header-menu-dropdown.active {
  display: block;
}

.menu-list {
  display: flex;
  flex-direction: column;
}

.menu-list-row {
  width: 100%;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: 6px;
  text-align: left;
}

.menu-list-button {
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.menu-list-button:hover,
.menu-list-select-row:hover {
  background: var(--bg-hover);
}

.menu-list-button + .menu-list-button,
.menu-list-select-row + .menu-list-button {
  margin-top: 2px;
}

.menu-list-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}

.menu-list-content {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.menu-list-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.menu-list-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.menu-select {
  width: 100%;
  padding: 4px 22px 4px 0;
  border: none;
  border-radius: 0;
  background: inherit;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: color 160ms ease;
  color-scheme: dark;
  background-color: transparent;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

.menu-select option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

[data-theme="dark"] .menu-select,
[data-theme="dark"] .menu-select option {
  background-color: #1e1e1e;
  color: #e0e0e0;
}
.menu-select:hover, .menu-select:focus {
  color: var(--accent);
}

.menu-list-select {
  margin-top: 1px;
}

/* Force dark mode on all select elements */
select {
  color-scheme: dark;
}

[data-theme="dark"] select,
[data-theme="dark"] select option {
  background-color: #161b22 !important;
  color: #e6edf3 !important;
}

[data-theme="light"] select,
[data-theme="light"] select option {
  background-color: #f6f8fa !important;
  color: #1f2328 !important;
}

/* Custom Dropdown Styles */
.custom-dropdown {
  position: relative;
  width: 100%;
}

.custom-dropdown-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color 200ms ease, background 200ms ease;
}

.custom-dropdown-trigger:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}

.custom-dropdown-trigger[aria-expanded="true"] {
  border-color: var(--accent);
}

.custom-dropdown-selected {
  flex: 1;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  max-height: 240px;
  overflow-y: auto;
  z-index: 1000;
  list-style: none;
  padding: 3px;
  margin: 0;
}

.custom-dropdown.open .custom-dropdown-menu {
  display: block;
}

.custom-dropdown-option {
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-primary);
  transition: background 150ms ease, color 150ms ease;
}

.custom-dropdown-option:hover,
.custom-dropdown-option:focus {
  background: var(--bg-hover);
  color: var(--accent);
}

.custom-dropdown-option.selected {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
}

/* Sidebar dropdown specific */
.sidebar-dropdown {
  padding: 0 16px 12px;
  position: relative;
}

.sidebar-dropdown .custom-dropdown-menu {
  position: fixed;
  z-index: 10000;
  left: auto;
  right: auto;
  width: auto;
  min-width: 200px;
}

.sidebar-dropdown .custom-dropdown-trigger {
  background: var(--bg-sidebar);
}

/* Menu list dropdown specific */
.menu-list-select-row .custom-dropdown {
  margin-top: 4px;
}

.menu-list-select-row .custom-dropdown-trigger {
  padding: 6px 10px;
  font-size: 0.78rem;
  background: var(--bg-primary);
}

.main-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* --- Mobile overlay --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--overlay-bg);
  z-index: 199;
}
.sidebar-overlay.active {
  display: block;
}

/* --- Sidebar --- */
.sidebar {
  width: 280px;
  min-width: 200px;
  max-width: 500px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: background 200ms ease, transform 300ms ease;
  flex-shrink: 0;
}

.sidebar.hidden {
  transform: translateX(-100%);
  width: 0;
  min-width: 0;
  border-right: none;
}


/* --- Sidebar filter --- */
.sidebar-filter {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.sidebar-filter-input-wrapper {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.sidebar-filter-input-wrapper input {
  width: 100%;
  padding: 6px 10px 6px 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--search-bg);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  outline: none;
  transition: border-color 200ms ease;
}

.sidebar-filter-input-wrapper input:focus {
  border-color: var(--accent);
}

.sidebar-filter-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  z-index: 1;
}

.sidebar-filter-actions {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
}

.sidebar-filter-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  transition: all 150ms ease;
  padding: 0;
  flex-shrink: 0;
}

.sidebar-filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-secondary));
}

.sidebar-filter-btn.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 20%, var(--bg-secondary));
  color: var(--accent);
}

/* --- Sidebar tabs --- */
.sidebar-tabs {
  display: flex;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  padding: 0 8px;
  gap: 2px;
  background: var(--bg-sidebar);
}

.sidebar-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 9px 8px 8px;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
  margin-bottom: -1px;
  white-space: nowrap;
}

.sidebar-tab:hover {
  color: var(--text-primary);
}

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

.sidebar-tab .icon {
  flex-shrink: 0;
  color: inherit;
}

/* --- Sidebar tab panels --- */
.sidebar-tab-panel {
  display: none;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scroll-behavior: smooth;
  flex-direction: column;
}

.sidebar-tab-panel.active {
  display: flex;
  flex-direction: column;
}

.sidebar-tab-panel::-webkit-scrollbar {
  width: 6px;
}
.sidebar-tab-panel::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 3px;
}

#sidebar-panel-vaults .sidebar-dropdown {
  padding: 10px 12px 6px;
}

.tree-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 0;
  transition: background 120ms ease, color 120ms ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tree-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.tree-item.active {
  background: var(--bg-hover);
  color: var(--accent);
}
.tree-item.focused {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--text-primary);
  box-shadow: inset 2px 0 0 var(--accent);
}
.tree-item.path-selected {
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  color: var(--accent);
  box-shadow: inset 0 0 0 2px var(--accent), inset 2px 0 0 var(--accent);
  border-radius: 6px;
  animation: pathPulse 1.5s ease-out;
}
@keyframes pathPulse {
  0% { background: color-mix(in srgb, var(--accent) 40%, transparent); }
  100% { background: color-mix(in srgb, var(--accent) 20%, transparent); }
}
.tree-item.filtered-out {
  display: none;
}

.tree-item .icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--text-muted);
}
.tree-item.active .icon {
  color: var(--accent);
}
.tree-item.vault-item .icon {
  color: var(--accent-green);
}

.tree-children {
  padding-left: 16px;
  overflow: hidden;
}

.tree-children.collapsed {
  display: none;
}
.tree-children.filtered-out {
  display: none;
}

.filter-results-header {
  margin-top: 8px;
}

.filter-results-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 4px 0 10px 12px;
}

.filter-result-item {
  align-items: flex-start;
  white-space: normal;
  overflow: visible;
  border-radius: 6px;
}

.filter-result-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  white-space: normal;
}

.filter-result-primary {
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.filter-result-secondary {
  color: var(--text-muted);
  font-size: 0.75rem;
  word-break: break-all;
  opacity: 0.8;
}

.sidebar-filter-empty {
  padding: 12px 16px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.filter-highlight {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--accent);
  padding: 0 2px;
  border-radius: 4px;
}

/* --- Tag Cloud --- */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 14px 16px 16px;
  align-content: flex-start;
}

.tag-item {
  display: inline-block;
  padding: 2px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  cursor: pointer;
  transition: opacity 150ms ease;
  line-height: 1.4;
}
.tag-item:hover {
  opacity: 0.8;
}
.tag-item.filtered-out {
  display: none;
}

/* --- Sidebar resize handle (horizontal) --- */
.sidebar-resize-handle {
  width: 5px;
  cursor: ew-resize;
  background: transparent;
  flex-shrink: 0;
  transition: background 150ms ease, opacity 300ms ease;
  z-index: 10;
}
.sidebar-resize-handle:hover,
.sidebar-resize-handle.active {
  background: var(--accent);
  opacity: 0.5;
}
.sidebar-resize-handle.hidden {
  width: 0;
  opacity: 0;
  pointer-events: none;
}

/* --- Content Area --- */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: clamp(16px, 3vw, 40px) clamp(16px, 4vw, 40px) 60px;
  transition: background 200ms ease;
  min-width: 0;
}
.content-area::-webkit-scrollbar {
  width: 8px;
}
.content-area::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 4px;
}

/* Welcome */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}
.welcome h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem;
  color: var(--text-secondary);
}
.welcome p {
  font-size: 0.95rem;
  max-width: 400px;
}

/* Breadcrumb */
.breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}
.breadcrumb span {
  cursor: pointer;
  color: var(--text-secondary);
  transition: color 120ms ease;
}
.breadcrumb span:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  cursor: default;
  color: var(--text-muted);
}
.breadcrumb .sep:hover {
  color: var(--text-muted);
}

/* File header */
.file-header {
  margin-bottom: 20px;
}
.file-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.file-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}
.file-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  margin-right: 6px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: opacity 150ms ease, transform 100ms ease;
}
.file-tag:hover {
  opacity: 0.8;
  transform: translateY(-1px);
}
.file-actions {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.btn-action {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-action:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.btn-action.active {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--tag-bg);
}

/* Frontmatter collapsible */
.frontmatter-toggle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 12px;
  user-select: none;
}
.frontmatter-toggle:hover {
  color: var(--text-secondary);
}
.frontmatter-content {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  display: none;
}
.frontmatter-content.open {
  display: block;
}

/* --- Raw source view --- */
.raw-source-view {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-top: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  line-height: 1.55;
  max-height: 70vh;
  overflow-y: auto;
}

/* --- Markdown Rendered Content --- */
.md-content h1, .md-content h2, .md-content h3,
.md-content h4, .md-content h5, .md-content h6 {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  margin: 1.4em 0 0.5em;
  color: var(--text-primary);
}
.md-content h1 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.md-content h2 { font-size: 1.25rem; }
.md-content h3 { font-size: 1.1rem; }

.md-content p {
  margin: 0.6em 0;
}

.md-content ul, .md-content ol {
  padding-left: 1.6em;
  margin: 0.5em 0;
}

.md-content li {
  margin: 0.25em 0;
}

.md-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 16px;
  margin: 0.8em 0;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-radius: 0 6px 6px 0;
}

.md-content code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  border: 1px solid var(--border);
}

.md-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 0.8em 0;
}
.md-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.55;
}

.md-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8em 0;
  font-size: 0.92rem;
}
.md-content th, .md-content td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.md-content th {
  background: var(--bg-secondary);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 0.85rem;
}

.md-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 0.6em 0;
}

.md-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5em 0;
}

.md-content .task-list-item {
  list-style: none;
  margin-left: -1.2em;
}
.md-content .task-list-item input[type="checkbox"] {
  margin-right: 6px;
}

/* Wikilinks */
.wikilink {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
  cursor: pointer;
}
.wikilink:hover {
  opacity: 0.8;
}
.wikilink-missing {
  color: var(--text-muted);
  border-bottom: 1px dashed var(--text-muted);
  cursor: default;
}

/* Image placeholders */
.image-not-found {
  display: inline-block;
  padding: 8px 12px;
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px dashed var(--danger);
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  cursor: help;
}

/* Markdown images */
.file-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 16px 0;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.file-content a img {
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.file-content a img:hover {
  opacity: 0.85;
}

/* --- Search Results --- */
.search-results {
  padding: 0;
}
.search-results-header {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.search-results-summary-text {
  display: inline;
}
.search-results-active-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.search-results-active-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  line-height: 1.2;
}
.search-results-active-tag-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0;
}
.search-result-item {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}
.search-result-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}
.search-result-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.search-result-vault {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent-green);
  margin-bottom: 4px;
}
.search-result-snippet {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.search-result-snippet .search-highlight {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  color: var(--accent);
  font-weight: 600;
  padding: 1px 3px;
  border-radius: 3px;
}
.search-result-title .search-highlight {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
  color: var(--accent);
  font-weight: 700;
  padding: 1px 3px;
  border-radius: 3px;
}
.search-result-tags {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.search-result-tags .file-tag {
  font-size: 0.7rem;
  padding: 1px 6px;
}

/* --- Loading indicator --- */
.loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-muted);
  gap: 12px;
}
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Editor Modal --- */
.editor-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: var(--overlay-bg);
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.editor-modal.active {
  display: flex;
}
.help-container {
  max-width: 960px;
}
.editor-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 1200px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 10;
}
.editor-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 600;
}
.editor-actions {
  display: flex;
  gap: 6px;
}
.editor-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 150ms ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.editor-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.editor-btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.editor-btn.primary:hover {
  opacity: 0.9;
}
.editor-btn.danger:hover {
  color: var(--danger);
  border-color: var(--danger);
}
.editor-body {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow-y: auto;
  overflow-x: hidden;
}
.help-body {
  padding: 0;
  background: radial-gradient(circle at top right, color-mix(in srgb, var(--accent) 10%, transparent), transparent 30%), var(--bg-primary);
}
.help-content {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}
.help-content h1,
.help-content h2,
.help-content h3 {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}
.help-content h1 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}
.help-content h2 {
  font-size: 1.05rem;
  margin: 24px 0 10px;
}
.help-content h3 {
  font-size: 0.9rem;
  margin: 16px 0 6px;
  color: var(--text-secondary);
}
.help-content p {
  margin: 0 0 12px;
  color: var(--text-secondary);
}
.help-content code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-primary);
}

.help-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 1fr);
  gap: 22px;
  align-items: stretch;
  padding: 22px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--border));
  border-radius: 18px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, transparent), transparent 45%), color-mix(in srgb, var(--bg-secondary) 92%, var(--bg-primary));
  margin-bottom: 26px;
}

.help-kicker {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  margin-bottom: 12px;
}

.help-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.help-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-primary) 72%, transparent);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.8rem;
}

.help-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.help-mini-window {
  width: 100%;
  max-width: 320px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border));
  background: color-mix(in srgb, var(--bg-primary) 88%, black 12%);
  box-shadow: 0 18px 44px rgba(0,0,0,0.28);
}

.help-mini-window-bar {
  display: flex;
  gap: 7px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.help-mini-window-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 45%, var(--text-muted));
}

.help-mini-window-body {
  display: flex;
  min-height: 190px;
}

.help-mini-sidebar {
  width: 72px;
  background: color-mix(in srgb, var(--bg-secondary) 92%, black 8%);
  border-right: 1px solid var(--border);
}

.help-mini-content {
  flex: 1;
  padding: 16px;
}

.help-mini-line {
  height: 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-muted) 28%, transparent);
  margin-bottom: 10px;
}

.help-mini-line.short {
  width: 62%;
}

.help-mini-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0;
}

.help-mini-tags span {
  padding: 3px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--text-primary);
  font-size: 0.72rem;
}

.help-mini-card {
  height: 64px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-secondary) 94%, white 6%), var(--bg-primary));
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 26px;
}

.help-card {
  padding: 18px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-secondary) 92%, var(--bg-primary));
}

.help-card-icon {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.help-section {
  margin-top: 26px;
}

.help-feature-list,
.help-steps,
.help-checklist,
.help-tip-grid {
  display: grid;
  gap: 14px;
}

.help-feature-item,
.help-step,
.help-check-item,
.help-tip-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-secondary) 92%, var(--bg-primary));
}

.help-feature-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
}

.help-feature-emoji {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  font-size: 1.4rem;
}

.help-steps {
  counter-reset: step;
}

.help-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
}

.help-step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

.help-check-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  align-items: start;
}

.help-check-item span {
  font-size: 1rem;
  line-height: 1.4;
}

.help-check-item p {
  margin-bottom: 0;
}

.help-tip-panel {
  margin-top: 28px;
}

.help-tip-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.help-tip-card {
  padding: 16px;
}
.cm-editor {
  height: auto;
  min-height: 100%;
  font-size: 0.9rem;
}
.cm-scroller {
  font-family: 'JetBrains Mono', monospace;
  overflow-y: auto !important;
  overflow-x: auto !important;
  height: auto;
  min-height: 100%;
  max-width: 100%;
}
.fallback-editor {
  width: 100%;
  min-height: 100%;
  height: auto;
  border: none;
  outline: none;
  resize: none;
  padding: 16px;
  background: var(--code-bg);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  box-sizing: border-box;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Mobile editor */
@media (max-width: 768px) {
  .editor-modal {
    padding: 0;
    align-items: stretch;
  }
  .editor-container {
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
    height: 100vh;
    overflow: hidden;
  }
  .editor-header {
    padding: 10px 12px;
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--bg-primary);
  }
  .editor-title {
    font-size: 0.85rem;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .editor-actions {
    gap: 4px;
  }
  .editor-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
  }
  .editor-body {
    flex: 1;
    min-height: 0;
    overflow: auto;
  }
  .cm-editor {
    height: auto;
    min-height: 100%;
  }
  .cm-scroller {
    overflow: auto !important;
    height: auto;
    min-height: 100%;
  }
  .fallback-editor {
    min-height: 100%;
    height: auto;
  }
  .search-results-header {
    align-items: flex-start;
  }
}

/* --- No-select during resize --- */
body.resizing {
  user-select: none;
  -webkit-user-select: none;
  cursor: ew-resize;
}
body.resizing-v {
  user-select: none;
  -webkit-user-select: none;
  cursor: ns-resize;
}

/* --- Responsive — Tablet --- */
@media (max-width: 1024px) {
  .sidebar {
    width: 240px;
    min-width: 200px;
  }
}

/* --- Responsive — Mobile --- */
@media (max-width: 768px) {
  .hamburger-btn {
    display: flex;
  }
  
  .sidebar-toggle-btn {
    display: none;
  }

  .header {
    gap: 6px;
    padding: 8px 10px;
  }

  .header-left {
    flex: 0 0 auto;
    gap: 8px;
  }

  .header-center {
    flex: 1;
    max-width: none;
  }

  .header-right {
    flex: 0 0 auto;
  }

  .header-logo {
    font-size: 0.95rem;
    gap: 6px;
  }

  .search-wrapper {
    max-width: none;
  }

  .search-wrapper input {
    padding: 6px 10px 6px 32px;
    font-size: 0.8rem;
  }

  .header-menu-btn {
    padding: 8px 10px;
  }

  .header-menu-dropdown {
    right: -8px;
    min-width: 240px;
  }

   .sidebar-quick-select {
     padding: 0 16px 12px;
   }

   .sidebar-quick-select select {
     color-scheme: dark;
     background-color: var(--bg-secondary);
     color: var(--text-primary);
   }

   [data-theme="dark"] .sidebar-quick-select select {
     background-color: #1e1e1e;
     color: #e0e0e0;
   }

   .sidebar-panel-toggle {
     padding: 8px 12px 10px;
   }

   .tag-cloud {
     padding: 0 12px 12px;
   }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    width: 280px !important;
    min-width: 280px !important;
    max-width: 85vw !important;
    transform: translateX(-100%);
    transition: transform 250ms ease, background 200ms ease;
    box-shadow: none;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0,0,0,0.3);
  }

  .sidebar-resize-handle {
    display: none;
  }

  .tag-resize-handle {
    display: none;
  }

  .tag-cloud-section {
    height: auto;
    max-height: 200px;
    min-height: 80px;
  }

  #vault-panel-content {
    max-height: none;
  }
  #tag-panel-content {
    max-height: none;
  }

   .help-content {
     padding: 20px 16px 28px;
   }

   .help-hero {
     grid-template-columns: 1fr;
     padding: 18px;
   }

   .help-grid,
   .help-tip-grid {
     grid-template-columns: 1fr;
   }

  .content-area {
    padding: 16px 12px 60px;
  }

  .file-title {
    font-size: 1.2rem;
  }

  .file-actions {
    flex-wrap: wrap;
  }
}

/* --- Configuration Modal --- */
.config-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 40px;
}

.config-section {
  margin-bottom: 28px;
}

.config-section h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.config-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.config-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
  min-height: 32px;
}

.config-filter-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  border: 1px solid color-mix(in srgb, var(--tag-text) 30%, transparent);
}

.config-filter-badge.disabled {
  opacity: 0.5;
}

.config-filter-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0;
  font-size: 1.1rem;
  line-height: 1;
}

.config-filter-remove:hover {
  opacity: 0.7;
}

.config-filter-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: 0;
  font-size: 0.9rem;
}

.config-add-pattern {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.config-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  outline: none;
  transition: border-color 200ms ease;
}

.config-input:focus {
  border-color: var(--accent);
}

.config-btn-add {
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 150ms ease;
}

.config-btn-add:hover {
  opacity: 0.9;
}

.config-regex-preview {
  padding: 8px 12px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.config-regex-preview code {
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  background: transparent;
  border: none;
  padding: 0;
}

/* --- Toast notifications --- */
.toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.toast {
  padding: 10px 20px;
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 250ms ease, transform 250ms ease;
  pointer-events: auto;
  max-width: 420px;
  text-align: center;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}
.toast-error {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}
.toast-success {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
}

/* --- Tree loading indicator --- */
.tree-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
}