:root {
  /* Rosé Pine (main) - dark */
  --bg: #191724;
  --bg-elevated: #1f1d2e;
  --bg-tab: #26233a;
  --bg-tab-active: #191724;
  --overlay: #26233a;
  --border: #403d52;
  --text: #e0def4;
  --text-muted: #6e6a86;
  --subtle: #908caa;
  --accent: #eb6f92;
  --accent-hover: #f38fb8;
  --love: #eb6f92;
  --pine: #31748f;
  --gold: #f6c177;
  --close-hover: #eb6f92;
  --cursor: #e0def4;
  --highlight: #524f67;
  --font-sans: "Noto Sans", ui-sans-serif, system-ui, sans-serif;
  --font-serif: "Merriweather", Georgia, serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", ui-monospace, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    /* Rosé Pine Dawn - light */
    --bg: #faf4ed;
    --bg-elevated: #fffaf3;
    --bg-tab: #f2e9e1;
    --bg-tab-active: #faf4ed;
    --overlay: #f2e9e1;
    --border: #dfdad9;
    --text: #575279;
    --text-muted: #9893a5;
    --subtle: #797593;
    --accent: #b4637a;
    --accent-hover: #d7827e;
    --love: #b4637a;
    --close-hover: #b4637a;
    --cursor: #575279;
    --highlight: #cecacd;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

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

/* TUI tab bar */
.tab-bar {
  display: flex;
  align-items: stretch;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  min-height: 36px;
  flex-shrink: 0;
  font-family: var(--font-sans);
}

.tabs {
  display: flex;
  align-items: stretch;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tabs::-webkit-scrollbar {
  height: 5px;
}

.tabs::-webkit-scrollbar-thumb {
  background: var(--border);
}

.tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 10px;
  background: var(--bg-tab);
  border-right: 1px solid var(--border);
  cursor: pointer;
  white-space: nowrap;
  max-width: 220px;
  min-width: 72px;
  user-select: none;
  font-family: var(--font-sans);
}

.tab:hover {
  background: var(--bg-elevated);
  color: var(--accent-hover);
}

.tab.active {
  background: var(--bg);
  color: var(--accent);
  border-bottom: 1px solid var(--bg);
  margin-bottom: -1px;
}

.tab-title {
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.tab-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
}

.tab-close:hover {
  background: var(--close-hover);
  color: var(--text);
}

.tab-bar-actions {
  display: flex;
  align-items: center;
  padding: 0 6px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
}

.tab-bar-welcome {
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
  font-size: 13px;
  color: var(--text);
}

.tab-bar-welcome .welcome-box-row {
  margin: 0;
  gap: 0.75rem;
}

.tab-bar-welcome a,
.tab-bar-welcome .section-link {
  color: var(--accent);
  text-decoration: none;
}

.tab-bar-welcome a:hover,
.tab-bar-welcome .section-link:hover {
  text-decoration: underline;
}

.tab-bar.collapsed .tab-bar-welcome {
  display: none;
}

.btn {
  padding: 4px 8px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 14px;
}

.btn:hover {
  color: var(--accent);
  background: var(--border);
}

/* Sidebar - light panel, Rosé Pine text */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  color: var(--text);
  z-index: 100;
  transform: translateX(-100%);
  transition: transform 0.15s ease;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-sections {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-size: 13px;
}

.sidebar-sections a {
  color: var(--accent);
  text-decoration: none;
}

.sidebar-sections a:hover {
  text-decoration: underline;
}

.sidebar-sections:empty {
  display: none;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
  margin: 0;
  font-size: 13px;
  font-weight: normal;
  color: var(--text);
  letter-spacing: 0.02em;
}

.sidebar .btn.close-sidebar {
  color: var(--text);
}

.note-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
  overflow-y: auto;
}

.note-list li {
  margin: 0;
}

.note-list a {
  display: block;
  padding: 6px 12px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
}

.note-list a:hover {
  background: var(--border);
  color: var(--accent);
}

/* Content area - TUI main view */
.content {
  flex: 1;
  overflow: auto;
  position: relative;
  font-family: var(--font-serif);
  font-size: 0.96rem;
  line-height: 1.42;
}

.content::-webkit-scrollbar {
  width: 8px;
}

.content::-webkit-scrollbar-thumb {
  background: var(--border);
}

.welcome {
  padding: 1.5rem 2rem;
  color: var(--text-muted);
  font-size: 13px;
}

.welcome-box-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  white-space: nowrap;
}

.welcome-sep {
  color: var(--text-muted);
  font-weight: normal;
}

.tab-bar-welcome kbd {
  font-size: 0.7rem;
  padding: 2px 4px;
}

.section-link {
  color: var(--accent);
  text-decoration: none;
}

.section-link:hover {
  text-decoration: underline;
}

/* Latest posts cards */
.home-section {
  margin-top: 3.5rem;
}

.home-section:first-child {
  margin-top: 2rem;
}

.home-section-title {
  font-size: 2rem;
  font-weight: normal;
  font-style: normal;
  color: var(--text);
  margin: 0 0 1rem;
  text-align: center;
  font-family: var(--font-serif);
}

.cards-section {
  margin-top: 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.cards-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 8px 0;
  font-family: var(--font-sans);
  font-size: 13px;
}

.cards-pagination.hidden {
  display: none;
}

.cards-pagination-btn {
  padding: 0;
  margin: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 13px;
  cursor: pointer;
}

.cards-pagination-btn:hover:not(:disabled) {
  color: var(--accent);
}

.cards-pagination-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.cards-pagination-info {
  color: var(--text-muted);
  font-size: 12px;
}

/* Books section - match ashwinvaidya.com/books.html: centered, minimal, serif */
.books-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2rem 0;
}

.book-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  font-family: var(--font-serif);
}

.book-card:hover {
  color: var(--accent);
}

.book-cover {
  max-width: 300px;
  width: 100%;
  height: auto;
  margin-bottom: 1rem;
  display: block;
  transition: transform 0.2s ease;
}

.book-card:hover .book-cover {
  transform: scale(1.05);
}

.book-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
  font-family: var(--font-serif);
}

.book-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0;
  font-family: var(--font-serif);
}

.card {
  display: block;
  text-align: left;
  text-decoration: none;
  color: var(--text);
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-serif);
  transition: color 0.12s ease;
}

.card:hover {
  color: var(--accent);
}

.card-title {
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0 0 0.35rem;
  color: inherit;
  font-family: var(--font-serif);
}

.card-meta {
  font-size: 11px;
  font-style: italic;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  font-family: var(--font-serif);
}

.card-preview {
  font-size: 0.96rem;
  line-height: 1.42;
  color: var(--subtle);
  margin: 0;
  font-family: var(--font-serif);
}

.card:hover .card-preview {
  color: var(--text-muted);
}

/* Status bar - tmux-style segments with chevrons (Rosé Pine) */
.status-bar {
  flex-shrink: 0;
  min-height: 26px;
  font-size: 11px;
  font-family: var(--font-sans);
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
}

.status-bar-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  min-height: 26px;
}

.status-segment {
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  font-size: 11px;
  color: var(--text);
  white-space: nowrap;
}

.status-segment-left {
  background: var(--overlay);
  color: var(--text);
}

.status-bar-right {
  display: flex;
  align-items: stretch;
  cursor: pointer;
  flex-shrink: 1;
  min-width: 0;
}

.status-bar-right.hidden {
  display: none;
}

.status-chevron {
  flex-shrink: 0;
  width: 0;
  height: 0;
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
}

/* Left-pointing chevron into last (accent) segment */
.status-chevron-path {
  border-left: 10px solid transparent;
  border-right: 10px solid var(--bg-elevated);
}

.status-chevron-path--last {
  border-right-color: var(--accent);
}

.status-path-segments {
  display: flex;
  align-items: stretch;
  flex-wrap: nowrap;
  max-width: 280px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 10px;
}

/* First segments: no background, muted text */
.status-path-seg {
  display: inline-flex;
  align-items: center;
  padding: 0 6px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}

/* Last segment only: Rosé Pine accent */
.status-path-seg-last {
  background: var(--accent);
  color: var(--bg);
  padding: 0 8px;
}

@media (prefers-color-scheme: light) {
  .status-path-seg-last {
    color: #191724;
  }
}

/* Content + TOC layout */
.content-and-toc {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.toc-sidebar {
  width: 240px;
  flex-shrink: 0;
  border-left: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-sans);
}

.toc-sidebar.hidden {
  display: none;
}

.toc-header {
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--love);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.toc-nav {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.toc-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-nav li {
  margin: 0;
}

.toc-nav a {
  display: block;
  padding: 4px 14px;
  font-size: 12px;
  color: var(--love);
  text-decoration: none;
  border-left: 2px solid transparent;
}

.toc-nav a:hover {
  color: var(--accent);
}

.toc-nav .toc-h1 {
  font-weight: 600;
  color: var(--love);
  padding-top: 8px;
  margin-top: 4px;
  border-top: 1px solid var(--border);
}

.toc-nav .toc-h1:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.toc-nav .toc-h2 {
  padding-left: 20px;
  font-size: 11px;
}

.toc-nav .toc-h3 {
  padding-left: 28px;
  font-size: 11px;
  color: var(--love);
}

.toc-nav .toc-num {
  margin-right: 6px;
  color: var(--love);
  font-variant-numeric: tabular-nums;
}

.welcome.hidden {
  display: none;
}

/* Panes row: side-by-side notes, collapse when overflow */
.panes-row {
  display: none;
  flex-direction: row;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  flex: 1;
  min-height: 0;
}

.panes-row.visible {
  display: flex;
}

.pane-wrapper {
  display: flex;
  flex-direction: column;
  min-width: 280px;
  width: 500px;
  max-width: 100%;
  flex-shrink: 0;
  background: var(--bg);
  border-right: 1px solid var(--border);
  min-height: 0;
  transition:
    min-width 0.15s ease,
    width 0.15s ease;
}

.pane-wrapper.active {
  background: var(--bg);
}

.panes-row:has(.pane-wrapper.collapsed) .pane-wrapper.active {
  flex: 1 1 auto;
  min-width: 260px;
  max-width: none;
}

.pane-wrapper.collapsed {
  min-width: 48px;
  width: 48px;
  flex: 0 0 48px;
  cursor: pointer;
}

.pane-wrapper.collapsed .pane-body {
  display: none;
}

.pane-wrapper.collapsed .pane-header {
  flex-direction: column;
  padding: 8px 4px;
  min-height: 0;
  justify-content: flex-start;
  align-items: center;
}

.pane-wrapper.collapsed .pane-title {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-height: 120px;
  font-size: 11px;
  line-height: 1.3;
}

.pane-wrapper.collapsed .pane-close {
  margin: 4px 0 0;
}

/* Pane header: only visible when collapsed (stacked strip with name sideways) */
.pane-header {
  display: none;
  flex-shrink: 0;
  min-height: 40px;
  background: var(--bg-elevated);
  color: var(--text);
}

.pane-wrapper.collapsed .pane-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 0;
  padding: 8px 4px;
  min-height: 0;
  border-bottom: none;
}

.pane-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.pane-close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  border-radius: 2px;
}

.pane-close:hover {
  background: var(--close-hover);
  color: var(--text);
}

.pane-body {
  flex: 1;
  overflow: auto;
  min-height: 0;
}

.pane {
  max-width: 72ch;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  font-family: var(--font-serif);
}

.pane-preface {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--text-muted, var(--text));
  opacity: 0.85;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.pane h1 {
  font-size: 3em;
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-weight: normal;
  font-style: normal;
  color: var(--text);
  text-align: center;
  font-family: var(--font-serif);
}

.pane h2 {
  font-size: 1.1rem;
  margin: 1rem 0 0.4rem;
  font-weight: 300;
  font-style: italic;
  color: var(--text);
  font-family: var(--font-serif);
}

.pane h3 {
  font-size: 1rem;
  margin: 0.75rem 0 0.4rem;
  font-weight: 300;
  font-style: italic;
  color: var(--text-muted);
  font-family: var(--font-serif);
}

.pane p {
  margin: 0.4rem 0;
  line-height: 1.42;
  font-size: 0.96rem;
}

.pane ul,
.pane ol {
  margin: 0.4rem 0;
  padding-left: 1.5rem;
  font-size: 0.96rem;
  font-family: var(--font-serif);
}

.pane code {
  background: var(--bg-elevated);
  padding: 0.15em 0.35em;
  border: 1px solid var(--border);
  font-size: 0.9em;
}

.pane pre {
  background: var(--bg-elevated);
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  overflow-x: auto;
  font-size: 12px;
}

.pane pre code {
  background: none;
  padding: 0;
  border: none;
}

.pane blockquote {
  margin: 0.5rem 0;
  padding-left: 1rem;
  border-left: 2px solid var(--border);
  color: var(--text-muted);
  font-size: 0.96rem;
  font-family: var(--font-serif);
}

/* Images and iframes: constrain to pane width, no overflow */
.pane img {
  max-width: 100%;
  height: auto;
  display: block;
}

.pane iframe {
  max-width: 100%;
}

/* All links in note content - Rosé Pine (no default blue) */
.pane a {
  color: var(--accent);
  text-decoration: none;
}

.pane a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.pane .wiki-link {
  color: var(--accent);
  text-decoration: none;
}

.pane .wiki-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* Wiki-link hover preview */
.wiki-preview {
  position: fixed;
  z-index: 200;
  max-width: 360px;
  max-height: 240px;
  overflow: auto;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  line-height: 1.42;
  color: var(--text);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  pointer-events: none;
  display: none;
}

.wiki-preview[aria-hidden="false"] {
  display: block;
}

.wiki-preview-title {
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 0.95rem;
}

.wiki-preview-body {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.pane.hidden {
  display: none;
}

/* Mobile / small: single pane, hide TOC */
@media (max-width: 768px) {
  .toc-sidebar {
    display: none;
  }

  .panes-row {
    overflow-x: hidden;
  }

  .pane-wrapper {
    display: none;
    width: 100%;
    min-width: 100%;
    max-width: 100%;
  }

  .pane-wrapper.active {
    display: flex;
  }

  .pane-wrapper.collapsed {
    display: none;
  }

  .pane-wrapper.collapsed.active {
    display: flex;
    min-width: 100%;
    width: 100%;
  }

  .pane-wrapper .pane-body {
    display: block;
  }

  .pane-wrapper .pane-header .pane-title {
    writing-mode: horizontal-tb;
    transform: none;
    max-height: none;
  }
}

/* Fuzzy search - TUI / fzf style */
.fuzzy-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 15vh 20px 0;
  z-index: 200;
}

.fuzzy-overlay.open {
  display: flex;
}

.fuzzy-dialog {
  width: 100%;
  max-width: 60ch;
  background: var(--bg);
  border: 1px solid var(--border);
  overflow: hidden;
  font-family: var(--font-sans);
}

.fuzzy-dialog .fuzzy-input-wrap {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.fuzzy-prompt {
  padding: 10px 0 10px 14px;
  font-size: 14px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.fuzzy-input {
  flex: 1;
  padding: 10px 14px;
  font-size: 14px;
  font-family: var(--font-sans);
  border: none;
  background: var(--bg);
  color: var(--text);
  outline: none;
  caret-color: var(--cursor);
}

.fuzzy-input::placeholder {
  color: var(--text-muted);
}

.fuzzy-results {
  list-style: none;
  margin: 0;
  padding: 2px 0 6px;
  max-height: 300px;
  overflow-y: auto;
  font-size: 13px;
}

.fuzzy-results li {
  margin: 0;
  padding: 6px 14px;
  cursor: pointer;
  border-left: 2px solid transparent;
}

.fuzzy-results li:hover,
.fuzzy-results li[aria-selected="true"] {
  background: var(--bg-elevated);
  color: var(--accent);
}

.fuzzy-results li[aria-selected="true"] {
  border-left-color: var(--accent);
}

.fuzzy-results .no-results {
  color: var(--text-muted);
  cursor: default;
  padding: 12px 14px;
}

.fuzzy-results .no-results:hover {
  background: transparent;
  color: var(--text-muted);
}

.fuzzy-hint {
  padding: 4px 14px 8px;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

kbd {
  font-family: var(--font-sans);
  padding: 2px 5px;
  font-size: 0.75rem;
  background: var(--bg-tab);
  border: 1px solid var(--border);
  color: var(--text-muted);
}