/* ═══════════════════════════════════════════════════════════════════════════
   PURE NOTES — PRIVATE, LOCAL-FIRST WORKSPACE
   style.css — Warm Amber & Muted Slate Palette, Layouts & Feature Components
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── 1. Warm Amber & Muted Slate Design Tokens (Zero Blue/Purple) ───────── */
:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  /* Light Mode — Warm Alabaster & Muted Slate/Zinc */
  --bg-app: #f6f6f4;
  --bg-surface: #ffffff;
  --bg-sidebar: #f9f9f8;
  --bg-secondary: #efefec;
  --bg-tertiary: #e4e4e0;

  --border-subtle: #ecece8;
  --border-light: #e2e2dd;
  --border-focus: #d97706;

  --text-main: #18181b;
  --text-secondary: #52525b;
  --text-muted: #8e8e96;
  --text-inverse: #ffffff;

  /* Warm Amber Accent Palette */
  --accent-primary: #d97706;
  --accent-primary-hover: #b45309;
  --accent-subtle: rgba(217, 119, 6, 0.1);
  --accent-subtle-hover: rgba(217, 119, 6, 0.18);
  --accent-glow: rgba(245, 158, 11, 0.25);

  --btn-primary-bg: #d97706;
  --btn-primary-hover: #b45309;
  --btn-primary-text: #ffffff;

  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --danger-subtle: rgba(220, 38, 38, 0.08);

  --success: #16a34a;
  --warning: #f59e0b;

  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Dense Code Editor Typography (Exact Integer Pixel Line-Height) */
  --editor-font-size: 13px;
  --editor-line-height: 19px;
}

/* ── Matte Obsidian Dark Mode Variables ──────────────────────────────────── */
html.dark {
  --bg-app: #09090b;
  --bg-surface: #111113;
  --bg-sidebar: #0c0c0e;
  --bg-secondary: #18181b;
  --bg-tertiary: #27272a;

  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-light: rgba(255, 255, 255, 0.08);
  --border-focus: #f59e0b;

  --text-main: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-inverse: #09090b;

  --accent-primary: #f59e0b;
  --accent-primary-hover: #d97706;
  --accent-subtle: rgba(245, 158, 11, 0.14);
  --accent-subtle-hover: rgba(245, 158, 11, 0.22);
  --accent-glow: rgba(245, 158, 11, 0.32);

  --btn-primary-bg: #f59e0b;
  --btn-primary-hover: #d97706;
  --btn-primary-text: #09090b;

  --danger-subtle: rgba(220, 38, 38, 0.15);
}

/* ── Global Override of All Legacy Indigo/Purple Tailwind Classes ────────── */
.bg-indigo-600 {
  background-color: var(--btn-primary-bg) !important;
  color: var(--btn-primary-text) !important;
}
.hover\:bg-indigo-700:hover {
  background-color: var(--btn-primary-hover) !important;
  color: var(--btn-primary-text) !important;
}
.bg-indigo-500 {
  background-color: var(--accent-primary) !important;
}
.bg-indigo-50,
.bg-indigo-50\/70,
.bg-indigo-500\/10,
html.dark .dark\:bg-indigo-500\/10,
html.dark .dark\:bg-indigo-500\/15,
html.dark .dark\:bg-indigo-950\/20 {
  background-color: var(--accent-subtle) !important;
}
.hover\:bg-indigo-50:hover,
.hover\:bg-indigo-100:hover,
.hover\:bg-indigo-50\/40:hover,
html.dark .dark\:hover\:bg-indigo-500\/20:hover,
html.dark .dark\:hover\:bg-indigo-500\/10:hover,
html.dark .dark\:hover\:bg-indigo-500\/5:hover {
  background-color: var(--accent-subtle-hover) !important;
}
.text-indigo-500,
.text-indigo-600,
.text-indigo-700,
.hover\:text-indigo-500:hover,
.hover\:text-indigo-600:hover,
.group:hover .group-hover\:text-indigo-600,
html.dark .dark\:text-indigo-300,
html.dark .dark\:text-indigo-400,
html.dark .group:hover .dark\:group-hover\:text-indigo-400 {
  color: var(--accent-primary) !important;
}
.border-indigo-500,
.border-indigo-400,
.border-indigo-200,
.border-indigo-200\/50,
.border-indigo-200\/40,
.focus\:border-indigo-400:focus,
.focus\:border-indigo-500:focus,
.hover\:border-indigo-300:hover,
.hover\:border-indigo-400:hover,
.group:hover .group-hover\:border-indigo-500,
html.dark .dark\:border-indigo-500\/20,
html.dark .dark\:border-indigo-500\/30,
html.dark .dark\:hover\:border-indigo-500:hover,
html.dark .dark\:hover\:border-indigo-500\/30:hover {
  border-color: var(--accent-primary) !important;
}
.shadow-indigo-600\/20,
.dark\:hover\:shadow-indigo-500\/5:hover {
  --tw-shadow-color: var(--accent-glow) !important;
  box-shadow: 0 2px 8px var(--accent-glow) !important;
}

/* ── Typography & Global Resets ─────────────────────────────────────────── */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--accent-subtle-hover) !important;
  color: var(--text-main) !important;
}

/* ── Scrollbars ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #d4d4d0;
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #a1a1aa;
}
html.dark ::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
}
html.dark ::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* ── Smooth Theme Transitions ───────────────────────────────────────────── */
html.theme-transition,
html.theme-transition *,
html.theme-transition *::before,
html.theme-transition *::after {
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.2s ease, box-shadow 0.25s ease !important;
}

/* ── Premium Theme Toggle SVG Icon Transitions ──────────────────────────── */
.theme-toggle-btn {
  position: relative;
  overflow: hidden;
}

.theme-svg-icon {
  width: 15px;
  height: 15px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: center center;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1), color 0.25s ease !important;
  will-change: transform, opacity;
  pointer-events: none;
}

html:not(.dark) .theme-svg-icon.sun-icon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-90deg) scale(0.5);
}

html:not(.dark) .theme-svg-icon.moon-icon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

html.dark .theme-svg-icon.sun-icon {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

html.dark .theme-svg-icon.moon-icon {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg) scale(0.5);
}

html.dark .theme-toggle-btn:hover .theme-svg-icon.sun-icon {
  transform: translate(-50%, -50%) rotate(18deg) scale(1.08);
}

html:not(.dark) .theme-toggle-btn:hover .theme-svg-icon.moon-icon {
  transform: translate(-50%, -50%) rotate(-14deg) scale(1.08);
}

/* ── Focus Outline ──────────────────────────────────────────────────────── */
*:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ── 3. Hide Editor Toolbar & Header Bar on Home View ───────────────────── */
body.is-home-view #app-header,
body.is-home-view #tabs-header-container,
body.is-home-view #status-bar,
body.is-home-view .editor-toolbar,
body.is-home-view .editor-header-actions {
  display: none !important;
}

/* ── Logo Background Integration ────────────────────────────────────────── */
.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background-color: transparent !important;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: -0.5px;
  user-select: none;
  box-shadow: none !important;
  flex-shrink: 0;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

#brand-logo-container:hover .logo {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ── Animated Notebook Logo & Blinking Cursor ───────────────────────────── */
.logo-svg {
  width: 18px;
  height: 18px;
  display: block;
}

@keyframes blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}

.logo-cursor {
  animation: blink 1.05s steps(1, end) infinite;
  fill: var(--accent-primary);
}


/* ── 4. Collapsed Sidebar Layout & Smooth 0.3s Transitions ──────────────── */
#sidebar {
  background-color: var(--bg-sidebar) !important;
  width: 18rem;
  transition: width 0.3s ease, min-width 0.3s ease, transform 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
  overflow-x: hidden;
}

@media (min-width: 640px) {
  #sidebar {
    width: 19rem;
  }
}

#sidebar,
#sidebar * {
  transition: width 0.3s ease, padding 0.3s ease, margin 0.3s ease, opacity 0.25s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.25s ease;
}

#sidebar.sidebar-hidden {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
}

#sidebar.collapsed {
  width: 60px !important;
  min-width: 60px !important;
  align-items: center !important;
}

/* Hide text labels & secondary controls when collapsed */
#sidebar.collapsed .sidebar-label,
#sidebar.collapsed #btn-cmd-palette-trigger kbd,
#sidebar.collapsed #folders-tree,
#sidebar.collapsed #tag-filter-select,
#sidebar.collapsed .tag-filter-container,
#sidebar.collapsed #bulk-action-bar,
#sidebar.collapsed #btn-toggle-bulk,
#sidebar.collapsed .note-item-text,
#sidebar.collapsed .note-tags-preview,
#sidebar.collapsed .folders-header {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Collapsed Header: stack logo and controls cleanly centered */
#sidebar.collapsed > div:first-child {
  width: 100% !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.35rem !important;
  padding: 0.6rem 0 !important;
}

#sidebar.collapsed > div:first-child > div:last-child {
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.2rem !important;
  width: 100% !important;
}

#sidebar.collapsed #brand-logo-container {
  justify-content: center !important;
  margin: 0 auto !important;
}

/* Collapsed Primary Action Icons (New Note, Folder, Search) — Centered */
#sidebar.collapsed > div:nth-child(2) {
  width: 100% !important;
  padding: 0.4rem 0 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.35rem !important;
}

#sidebar.collapsed .grid-cols-2 {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  gap: 0.35rem !important;
}

#sidebar.collapsed #btn-new-note,
#sidebar.collapsed #btn-new-folder,
#sidebar.collapsed #btn-cmd-palette-trigger {
  width: 36px !important;
  height: 32px !important;
  min-height: 32px !important;
  padding: 0 !important;
  margin: 0 auto !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0 !important;
}

#sidebar.collapsed #btn-cmd-palette-trigger > span {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  gap: 0 !important;
  margin: 0 !important;
}

/* Collapsed Secondary View Icons (All, Favs, Trash) — Centered */
#sidebar.collapsed #sidebar-nav-views {
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 0.4rem 0 !important;
  gap: 0.25rem !important;
}

#sidebar.collapsed #sidebar-nav-views > div {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
  gap: 0.25rem !important;
}

#sidebar.collapsed #sidebar-nav-views button {
  width: 36px !important;
  height: 32px !important;
  padding: 0 !important;
  margin: 0 auto !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

/* Collapsed Notes List Items — Centered */
#sidebar.collapsed #notes-list-container {
  width: 100% !important;
  padding: 0.35rem 0 !important;
}

#sidebar.collapsed #notes-list {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  width: 100% !important;
}

#sidebar.collapsed .note-item {
  width: 36px !important;
  height: 36px !important;
  padding: 0 !important;
  margin: 0 auto 0.25rem auto !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

#sidebar.collapsed .note-item > div {
  justify-content: center !important;
  align-items: center !important;
}

#sidebar.collapsed .note-icon {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 !important;
}

/* Collapsed Footer Navigation Icons (Graph, Stats, Settings) — Centered */
#sidebar.collapsed #sidebar-footer {
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.25rem !important;
  padding: 0.5rem 0 !important;
}

#sidebar.collapsed #sidebar-footer button {
  width: 36px !important;
  height: 32px !important;
  padding: 0 !important;
  margin: 0 auto !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

#sidebar-overlay {
  transition: opacity 0.25s ease;
}
#sidebar-overlay.overlay-hidden {
  opacity: 0;
  pointer-events: none;
}

/* ── Compact Sidebar Button Sizing ("+ Note", "Folder", Search) ─────────── */
#sidebar > div:nth-child(2) {
  padding: 0.375rem 0.5rem !important;
}

.btn-sidebar-action,
#btn-new-note,
#btn-new-folder,
#btn-cmd-palette-trigger {
  height: 24px !important;
  min-height: 24px !important;
  padding: 0.125rem 0.5rem !important;
  font-size: 11px !important;
  line-height: 1 !important;
  border-radius: 6px !important;
  gap: 0.3rem !important;
}

.ic {
  width: 12px;
  height: 12px;
  display: inline-block;
  vertical-align: -1px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

.note-item {
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.note-item:hover {
  transform: translateX(2px);
}
.note-item.active {
  background-color: var(--accent-subtle) !important;
  border-color: rgba(217, 119, 6, 0.35) !important;
}

/* ── Multi-Tab Bar ──────────────────────────────────────────────────────── */
#tabs-bar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#tabs-bar::-webkit-scrollbar {
  display: none;
}

.tab-item {
  transition: all 0.15s ease;
  user-select: none;
}
.tab-item:hover {
  background-color: rgba(0, 0, 0, 0.04);
}
html.dark .tab-item:hover {
  background-color: rgba(255, 255, 255, 0.06);
}
.tab-item.active {
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--accent-primary);
  color: var(--text-main);
  font-weight: 500;
}
html.dark .tab-item.active {
  background-color: #111113;
}

/* ── Editor Container & Viewing Modes ───────────────────────────────────── */
.editor-mode-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: 100%;
  gap: 0;
}

.editor-mode-write {
  display: flex;
  height: 100%;
  width: 100%;
}

.editor-mode-preview {
  display: flex;
  height: 100%;
  width: 100%;
}

/* ── Text Density & Exact 1:1 Line Numbers Gutter Alignment ────────────── */
.editor-gutter-wrapper {
  display: flex;
  position: relative;
  flex: 1;
  height: 100%;
  overflow: hidden;
  align-items: stretch;
}

#editor-line-numbers,
.line-numbers {
  font-family: var(--font-mono) !important;
  font-size: var(--editor-font-size) !important;
  line-height: var(--editor-line-height) !important;
  color: var(--text-muted);
  user-select: none;
  text-align: right;
  padding-top: 8px !important;
  padding-bottom: 64px !important;
  padding-left: 12px !important;
  padding-right: 10px !important;
  border-top: 0 !important;
  border-bottom: 0 !important;
  border-left: 0 !important;
  border-right: 1px solid var(--border-light);
  background-color: transparent;
  overflow: hidden;
  opacity: 0.55;
  margin: 0 !important;
  box-sizing: border-box !important;
  pointer-events: none;
  flex-shrink: 0;
  min-width: 44px;
  font-variant-ligatures: none;
  letter-spacing: 0px !important;
}

#note-content,
.editor-textarea {
  font-family: var(--font-mono) !important;
  font-size: var(--editor-font-size) !important;
  line-height: var(--editor-line-height) !important;
  padding-top: 8px !important;
  padding-bottom: 64px !important;
  padding-left: 14px !important;
  padding-right: 20px !important;
  border: 0 !important;
  margin: 0 !important;
  resize: none;
  min-height: 100%;
  tab-size: 2;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
  box-sizing: border-box !important;
  font-variant-ligatures: none;
  letter-spacing: 0px !important;
}

.line-num {
  display: block;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  box-sizing: border-box;
  text-align: right;
  user-select: none;
  font-family: inherit !important;
  font-size: inherit !important;
  line-height: var(--editor-line-height) !important;
}

.editor-meta {
  padding-top: 0.6rem !important;
  padding-bottom: 0.2rem !important;
}

.tags-container {
  margin-top: 0.2rem !important;
  margin-bottom: 0.2rem !important;
}

.editor-divider {
  margin-top: 0.3rem !important;
  margin-bottom: 0 !important;
}

/* ── Markdown Body & Prose ──────────────────────────────────────────────── */
.markdown-body {
  font-size: var(--editor-font-size);
  line-height: var(--editor-line-height);
  color: var(--text-main);
}
.markdown-body > *:first-child { margin-top: 0; }
.markdown-body > *:last-child  { margin-bottom: 0; }

.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  color: var(--text-main);
  font-weight: 600;
  line-height: 1.3;
  margin-top: 1.1em;
  margin-bottom: 0.35em;
  scroll-margin-top: 4rem;
}
.markdown-body h1 { font-size: 1.4rem; font-weight: 700; border-bottom: 1px solid var(--border-light); padding-bottom: 0.25em; }
.markdown-body h2 { font-size: 1.2rem; border-bottom: 1px solid var(--border-light); padding-bottom: 0.2em; }
.markdown-body h3 { font-size: 1.05rem; }
.markdown-body h4 { font-size: 0.95rem; }

.markdown-body p { margin: 0.5em 0; }
.markdown-body ul, .markdown-body ol { margin: 0.5em 0; padding-left: 1.4em; }
.markdown-body ul { list-style-type: disc; }
.markdown-body ol { list-style-type: decimal; }
.markdown-body li { margin: 0.15em 0; }

.markdown-body blockquote {
  border-left: 3px solid var(--accent-primary);
  padding: 0.4em 0.8em;
  margin: 0.75em 0;
  color: var(--text-secondary);
  background-color: var(--accent-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.markdown-body code:not(pre code) {
  font-family: var(--font-mono);
  background-color: var(--accent-subtle);
  color: var(--accent-primary);
  padding: 0.15em 0.35em;
  border-radius: var(--radius-sm);
  font-size: 0.88em;
}

.markdown-body pre {
  margin: 0.75em 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: #18181b;
}

/* ── Home Dashboard Card Grid ────────────────────────────────────────────── */
.home-note-card {
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.home-note-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary) !important;
  box-shadow: 0 4px 12px var(--accent-glow);
}

html.dark .home-note-card:hover {
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
}

html.dark .markdown-body pre {
  background: #0c0c0e;
  border-color: rgba(255, 255, 255, 0.1);
}

.markdown-body a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 2em 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 0.9em;
}
.markdown-body th {
  background-color: var(--bg-secondary);
  padding: 0.6em 1em;
  text-align: left;
  font-weight: 600;
  border: 1px solid var(--border-light);
}
.markdown-body td {
  padding: 0.6em 1em;
  border: 1px solid var(--border-light);
}

/* ── Interactive Task List Checkboxes ───────────────────────────────────── */
.markdown-body .task-list-item {
  list-style-type: none;
  margin-left: -1.4em;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.markdown-body .task-checkbox,
.markdown-body input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  border: 1.5px solid var(--text-muted);
  border-radius: 4px;
  background-color: transparent;
  cursor: pointer;
  display: inline-grid;
  place-content: center;
  transition: all 0.15s ease;
  vertical-align: middle;
  transform: translateY(2px);
  flex-shrink: 0;
}

.markdown-body .task-checkbox:checked,
.markdown-body input[type="checkbox"]:checked {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.markdown-body .task-checkbox:checked::before,
.markdown-body input[type="checkbox"]:checked::before {
  content: "";
  width: 0.48rem;
  height: 0.28rem;
  border-left: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(-45deg) translate(1px, -1px);
}

.markdown-body .task-checkbox:hover,
.markdown-body input[type="checkbox"]:hover {
  border-color: var(--accent-primary);
}

/* ── Code Blocks with Runner UI ─────────────────────────────────────────── */
.code-block-wrapper {
  margin: 1.1em 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  background: #18181b;
}
html.dark .code-block-wrapper {
  background: #0c0c0e;
  border-color: rgba(255, 255, 255, 0.08);
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0.85rem;
  background: #27272a;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #a1a1aa;
}
html.dark .code-block-header {
  background: #18181b;
}

.code-block-header .lang-tag {
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--accent-primary);
}

.code-block-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-code-action {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #d4d4d8;
  padding: 0.22rem 0.55rem;
  border-radius: 4px;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.15s ease;
}
.btn-code-action:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
}
.btn-code-run {
  background: #d97706;
  color: #ffffff;
}
.btn-code-run:hover {
  background: #b45309;
}

.code-block-content {
  margin: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  padding: 0.85rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #e4e4e7;
  overflow-x: auto;
}

/* Code Runner Output Drawer */
.code-output-container {
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  background: #111113;
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #fde68a;
  max-height: 240px;
  overflow-y: auto;
}
html.dark .code-output-container {
  background: #070708;
}

.code-output-container.output-error {
  color: #fca5a5;
  background: #1a0808;
}

.code-output-iframe {
  width: 100%;
  height: 220px;
  border: none;
  background: #ffffff;
  border-radius: 4px;
}

/* ── Wiki-links & Backlinks ──────────────────────────────────────────────── */
.wiki-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.12rem 0.45rem;
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border-radius: 9999px;
  font-size: 0.85em;
  font-weight: 500;
  text-decoration: none !important;
  border: 1px solid rgba(217, 119, 6, 0.25);
  cursor: pointer;
  transition: all 0.15s ease;
}
.wiki-link:hover {
  background: var(--accent-subtle-hover);
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

/* ── Zen Mode ────────────────────────────────────────────────────────────── */
#app.zen-mode #sidebar,
#app.zen-mode #tabs-header-container,
#app.zen-mode #app-header,
#app.zen-mode #toc-dock,
#app.zen-mode #backlinks-dock {
  display: none !important;
}

#app.zen-mode #main-workspace {
  width: 100vw !important;
  max-width: 100vw !important;
}

#app.zen-mode #editor-wrapper {
  max-width: 820px;
  margin: 0 auto;
  padding-top: 5vh;
}

#btn-exit-zen {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  opacity: 0.3;
  transition: opacity 0.2s ease, transform 0.15s ease;
}
#btn-exit-zen:hover {
  opacity: 1;
  transform: scale(1.05);
}

/* ── Table of Contents Side-Dock ─────────────────────────────────────────── */
.toc-dock {
  width: 240px;
  border-left: 1px solid var(--border-light);
  background-color: var(--bg-surface);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.toc-dock.dock-hidden {
  display: none;
}
.toc-item {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.28rem 0.5rem;
  border-radius: 6px;
  display: block;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: all 0.15s ease;
}
.toc-item:hover {
  color: var(--accent-primary);
  background-color: var(--accent-subtle);
  transform: translateX(3px);
}
.toc-item.depth-1 { padding-left: 0.5rem; font-weight: 600; }
.toc-item.depth-2 { padding-left: 1.25rem; font-weight: 500; }
.toc-item.depth-3 { padding-left: 2rem; color: var(--text-muted); }

/* ── Lock Screen Overlay (Client-Side Encryption) ────────────────────────── */
.lock-screen-overlay {
  position: absolute;
  inset: 0;
  z-index: 30;
  background-color: var(--bg-surface);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

@keyframes shake-anim {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}
.shake {
  animation: shake-anim 0.4s ease-in-out;
}

/* ── Mind Map / Graph Canvas ─────────────────────────────────────────────── */
#graph-canvas {
  width: 100%;
  height: 100%;
  cursor: grab;
}
#graph-canvas:active {
  cursor: grabbing;
}

/* ── 14-Day Heatmap Grid (Warm Amber Scale) ──────────────────────────────── */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  gap: 6px;
}
.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background-color: var(--border-light);
  transition: transform 0.15s ease;
}
.heatmap-cell:hover {
  transform: scale(1.2);
}
.heatmap-cell.level-0 { background-color: rgba(161, 161, 170, 0.2); }
.heatmap-cell.level-1 { background-color: #fde68a; }
.heatmap-cell.level-2 { background-color: #f59e0b; }
.heatmap-cell.level-3 { background-color: #d97706; }
.heatmap-cell.level-4 { background-color: #92400e; }

html.dark .heatmap-cell.level-0 { background-color: rgba(255, 255, 255, 0.05); }
html.dark .heatmap-cell.level-1 { background-color: #78350f; }
html.dark .heatmap-cell.level-2 { background-color: #b45309; }
html.dark .heatmap-cell.level-3 { background-color: #f59e0b; }
html.dark .heatmap-cell.level-4 { background-color: #fde68a; }

/* ── Drag and Drop Overlay ───────────────────────────────────────────────── */
#drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(217, 119, 6, 0.12);
  backdrop-filter: blur(6px);
  border: 3px dashed var(--accent-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}
#drop-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── Fullscreen Shared Note Viewer ───────────────────────────────────────── */
#sharedNoteModal {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: var(--bg-app);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
}

#sharedNoteModal.hidden {
  display: none !important;
}

/* ── Print / PDF Styles ──────────────────────────────────────────────────── */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    height: auto !important;
    overflow: visible !important;
  }
  #sidebar, #tabs-header-container, #app-header, #status-bar, 
  #toc-dock, #backlinks-dock, #btn-exit-zen, .btn-code-action, 
  .code-output-container, #toast-container, .modal-backdrop, #shareModal {
    display: none !important;
  }
  #main-workspace, #editor-scroll, #editor-wrapper, #editor {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: visible !important;
  }
  #note-title {
    font-size: 24pt !important;
    margin-bottom: 12pt !important;
    color: #000000 !important;
  }
  #markdown-preview {
    display: block !important;
    font-size: 11pt !important;
    color: #000000 !important;
  }
  #editor-gutter-wrapper {
    display: none !important;
  }
}

/* ── Floating Animation & Toasts ────────────────────────────────────────── */
@keyframes toast-slide-in {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toast-slide-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(16px) scale(0.96); }
}
.toast-enter { animation: toast-slide-in 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.toast-exit { animation: toast-slide-out 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

.theme-spin { transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1); }
.theme-spin.spin { transform: rotate(360deg); }

/* ── Select & Option Dark Mode Styles ───────────────────────────────────── */
select {
  color-scheme: dark light;
  background-color: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-light);
}
option {
  background-color: var(--bg-surface);
  color: var(--text-main);
}
html.dark select,
html.dark option {
  color-scheme: dark;
  background-color: #18181b;
  color: #f4f4f5;
}

/* ── Hide Number Input Spin Arrows ──────────────────────────────────────── */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}


/* ── Unified Lucide Stroke-Based SVG Icons ──────────────────────────────── */
.lucide-svg {
  display: inline-block;
  vertical-align: middle;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
}

.lucide-svg.fill-current {
  fill: currentColor;
}

@keyframes svg-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.svg-spin {
  animation: svg-spin 0.9s linear infinite;
}


/* ── Note Card Hover Quick-Action Bar ───────────────────────────────────── */
.card-quick-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-2px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.home-note-card:hover .card-quick-actions,
.home-note-card:focus-within .card-quick-actions {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.card-quick-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.12s ease;
}

.card-quick-btn:hover {
  background-color: var(--bg-secondary);
  color: var(--text-main);
  transform: scale(1.06);
}

.card-quick-btn.active-pin {
  color: var(--accent-primary);
}

.card-quick-btn.active-fav {
  color: #f43f5e;
}

.card-quick-btn.btn-delete:hover {
  background-color: var(--danger-subtle);
  color: var(--danger);
}


/* ── Lock Screen Overlay Hidden State Fix (Prevent Blocking Editor Input) ── */
.lock-screen-overlay.hidden {
  display: none !important;
  pointer-events: none !important;
  visibility: hidden !important;
}

/* ── Editor Textarea Input Responsiveness & Sizing ──────────────────────── */
#editor-wrapper {
  min-height: 0;
}

#editor-canvas-container {
  flex: 1 1 auto;
  min-height: 320px;
}

#editor-write-pane {
  flex: 1 1 auto;
  min-height: 0;
  height: 100%;
}

.editor-gutter-wrapper {
  min-height: 300px;
  height: 100%;
}

#note-content,
.editor-textarea {
  pointer-events: auto !important;
  user-select: text !important;
  -webkit-user-select: text !important;
  position: relative;
  z-index: 10;
  width: 100%;
  height: 100%;
  min-height: 100%;
  flex: 1 1 auto;
  cursor: text;
}

#note-title {
  pointer-events: auto !important;
  user-select: text !important;
  -webkit-user-select: text !important;
  position: relative;
  z-index: 10;
}

/* ── Toolbar Action Icon Vertical Alignment ─────────────────────────────── */
.editor-toolbar,
.editor-header-actions {
  display: flex;
  align-items: center;
}

.editor-toolbar button,
.editor-header-actions button,
#editor-mode-switcher button {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  vertical-align: middle !important;
  line-height: 1 !important;
}

.editor-toolbar button > span,
.editor-header-actions button > span,
#icon-favorite,
#icon-pin,
#icon-lock,
#collapse-icon {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  vertical-align: middle !important;
  line-height: 1 !important;
}

.editor-toolbar svg,
.editor-header-actions svg,
.lucide-svg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
}

.card-quick-btn.btn-restore:hover {
  background-color: var(--accent-subtle);
  color: var(--accent-primary);
}


/* ── Shared Note Route Isolation (/s/[id]) ──────────────────────────────── */
html.is-shared-route #app,
html.is-shared-route #sidebar,
html.is-shared-route #sidebar-overlay,
html.is-shared-route #home-view,
html.is-shared-route #main-workspace,
html.is-shared-route #cmd-palette-modal,
html.is-shared-route #app-header,
html.is-shared-route #tabs-header-container,
html.is-shared-route #status-bar,
body.is-shared-view #app,
body.is-shared-view #sidebar,
body.is-shared-view #sidebar-overlay,
body.is-shared-view #home-view,
body.is-shared-view #main-workspace,
body.is-shared-view #cmd-palette-modal,
body.is-shared-view #app-header,
body.is-shared-view #tabs-header-container,
body.is-shared-view #status-bar {
  display: none !important;
}

html.is-shared-route #sharedNoteModal,
body.is-shared-view #sharedNoteModal {
  display: flex !important;
}

#shared-brand-link:hover .logo {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}