/* Component tokens follow shadcn/ui (neutral). Shell geometry, tab strip and
   the quick switcher follow the Obsidian app. One accent, used for state only. */

:root {
  --radius: 10px;
  --radius-sm: 6px;

  --background: #ffffff;
  --foreground: #0a0a0a;
  --card: #ffffff;
  --muted: #f5f5f5;
  --muted-foreground: #6b6b6b;
  --border: #e6e6e6;
  --border-strong: #d4d4d4;
  --primary: #171717;
  --primary-foreground: #fafafa;
  --accent: #6540e8;
  --accent-soft: #f1edfe;
  --warn: #a44a06;
  --warn-soft: #fdf7ec;
  --ok: #157347;

  --shell: #f7f7f6;
  --shell-rail: #fbfbfa;

  --font-sans: system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  color-scheme: light dark;
}

:root[data-theme="dark"] {
  --background: #1e1e1e;
  --foreground: #dadada;
  --card: #262626;
  --muted: #2b2b2b;
  --muted-foreground: #a6a6a6;
  --border: #363636;
  --border-strong: #474747;
  --primary: #dadada;
  --primary-foreground: #1e1e1e;
  --accent: #a88bfa;
  --accent-soft: #2c2440;
  --warn: #e9b168;
  --warn-soft: #2b2416;
  --ok: #6fce9c;

  --shell: #1a1a1a;
  --shell-rail: #212121;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --background: #1e1e1e;
    --foreground: #dadada;
    --card: #262626;
    --muted: #2b2b2b;
    --muted-foreground: #a6a6a6;
    --border: #363636;
    --border-strong: #474747;
    --primary: #dadada;
    --primary-foreground: #1e1e1e;
    --accent: #a88bfa;
    --accent-soft: #2c2440;
    --warn: #e9b168;
    --warn-soft: #2b2416;
    --ok: #6fce9c;

    --shell: #1a1a1a;
    --shell-rail: #212121;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  font-feature-settings: "palt" 1;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration: underline;
}

code,
pre,
kbd {
  font-family: var(--font-mono);
}

code {
  font-size: 1em;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 40;
  padding: 8px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* ---------- shell ---------- */

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.titlebar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 46px;
  padding: 0 12px 0 14px;
  overflow: hidden;
  background: var(--shell);
  border-bottom: 1px solid var(--border);
}

.vault {
  color: inherit;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
}

.vault:hover {
  text-decoration: none;
  opacity: 0.75;
}

.vault-icon {
  border-radius: 4px;
}

.vault-ver {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--muted-foreground);
}

.tabs {
  flex: 1 1 auto;
  display: flex;
  align-items: stretch;
  gap: 1px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  align-self: stretch;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tabs.is-scrollable {
  mask-image: linear-gradient(to right, #000 0, #000 calc(100% - 22px), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, #000 0, #000 calc(100% - 22px), transparent 100%);
}

.tab {
  flex: 0 0 auto;
  scroll-snap-align: start;
  appearance: none;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted-foreground);
  font: inherit;
  font-size: 0.95rem;
  padding: 0 11px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 120ms ease, background 120ms ease, border-color 120ms ease;
}

.tab:hover {
  color: var(--foreground);
  background: color-mix(in srgb, var(--foreground) 4%, transparent);
}

.tab[aria-current="page"] {
  color: var(--foreground);
  border-bottom-color: var(--accent);
  background: var(--background);
}

.lang {
  display: inline-flex;
  align-items: center;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--background);
  font-size: 0.95rem;
}

.lang-item {
  padding: 1px 7px;
  border-radius: 4px;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.lang-item[aria-current="true"],
.lang-item[aria-current="page"] {
  background: var(--primary);
  color: var(--primary-foreground);
}

a.lang-item:hover {
  background: var(--muted);
  color: var(--foreground);
  text-decoration: none;
}

.titlebar-tools {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 28px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--background);
  color: var(--muted-foreground);
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
}

.search-trigger:hover {
  color: var(--foreground);
  border-color: var(--border-strong);
}

.search-trigger kbd {
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--muted);
  font-size: 0.95rem;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--background);
  color: var(--muted-foreground);
  cursor: pointer;
}

.icon-btn:hover {
  color: var(--foreground);
  border-color: var(--border-strong);
}

.btn {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--background);
  color: var(--foreground);
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
}

.btn:hover {
  background: var(--muted);
  text-decoration: none;
}

.workspace {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr) 252px;
  align-items: start;
}

/* ---------- sidebar ---------- */

.sidebar {
  position: sticky;
  top: 46px;
  height: calc(100vh - 46px);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 16px 10px 12px;
  background: var(--shell);
  border-right: 1px solid var(--border);
  font-size: 0.95rem;
}

.tree-heading {
  margin: 14px 0 4px 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted-foreground);
}

.tree-heading:first-child {
  margin-top: 0;
}

.tree-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.tree-file {
  display: flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--foreground);
  font: inherit;
  text-align: left;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-file:hover {
  background: color-mix(in srgb, var(--foreground) 5%, transparent);
  text-decoration: none;
}

.tree-file[aria-current="page"] {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.tree-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border-strong);
  flex: 0 0 auto;
}

.tree-file[aria-current="page"] .tree-dot {
  background: var(--accent);
}

.tree-file--ext {
  color: var(--muted-foreground);
}

.sidebar-foot {
  margin-top: auto;
  padding: 14px 8px 4px;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.sidebar-foot p {
  margin: 0 0 3px;
}

/* ---------- content ---------- */

.content {
  padding: 28px clamp(22px, 5vw, 60px) 96px;
  min-width: 0;
}

.content:focus {
  outline: none;
}

.doc-crumbs {
  max-width: 720px;
  margin: 0 auto 18px;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.crumb-sep {
  margin: 0 6px;
  opacity: 0.6;
}

.doc {
  max-width: 720px;
  margin: 0 auto;
}

.doc[hidden] {
  display: none;
}

h1 {
  margin: 0 0 10px;
  font-size: 1.85rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 650;
}

h2 {
  margin: 38px 0 12px;
  font-size: 1.08rem;
  line-height: 1.5;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.lede {
  margin: 0 0 14px;
  max-width: 62ch;
  color: var(--muted-foreground);
  font-size: 0.95rem;
}

.body-text {
  margin: 0 0 12px;
  max-width: 66ch;
  color: var(--muted-foreground);
  font-size: 0.95rem;
}

.body-text code {
  color: var(--foreground);
  background: var(--muted);
  padding: 1px 5px;
  border-radius: 4px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 18px;
}

.chip {
  padding: 2px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

/* properties */

.props {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 0 0 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.prop {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 13px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.prop > span {
  color: var(--muted-foreground);
  white-space: nowrap;
}

.prop p {
  margin: 0;
  text-align: right;
  overflow-wrap: anywhere;
}

.mono {
  font-size: 1em;
}

/* tables */

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 0.95rem;
  margin: 0 0 6px;
}

.table th,
.table td {
  padding: 8px 13px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: baseline;
  overflow-wrap: anywhere;
}

.table thead th {
  background: var(--muted);
  color: var(--muted-foreground);
  font-weight: 500;
  font-size: 0.95rem;
}

.table tbody tr:last-child th,
.table tbody tr:last-child td {
  border-bottom: 0;
}

.table tbody tr:not([hidden]):hover {
  background: color-mix(in srgb, var(--foreground) 3%, transparent);
}

.table tbody th {
  font-weight: 500;
}

.table code {
  background: var(--muted);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.95rem;
}

.table--num td:nth-child(2),
.table--num td:nth-child(3),
.table--num .ratio {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.table--num b {
  font-weight: 650;
}

.ratio {
  color: var(--muted-foreground);
  font-size: 0.95rem;
}

.bar {
  display: inline-block;
  position: relative;
  width: 40px;
  height: 4px;
  margin-right: 8px;
  border-radius: 999px;
  background: var(--muted);
  vertical-align: middle;
  overflow: hidden;
}

.bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: max(var(--v, 4%), 3px);
  background: var(--accent);
  border-radius: inherit;
}

.table-note {
  margin: 6px 0 0;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

/* filter */

.filterbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
}

.filterbar input {
  flex: 1 1 auto;
  min-width: 0;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--foreground);
  font: inherit;
  font-size: 0.95rem;
}

.filterbar input::placeholder {
  color: var(--muted-foreground);
}

.filterbar input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.filter-count {
  font-size: 0.95rem;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* code */

.codeblock {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  margin-bottom: 12px;
}

.codeblock-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--muted);
}

.codeblock-lang {
  padding-left: 4px;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.codeblock pre {
  margin: 0;
  padding: 12px 14px;
  overflow-x: auto;
  line-height: 1.7;
  font-size: 0.95rem;
  tab-size: 2;
}

.codeblock--wrap pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.codeblock pre[hidden] {
  display: none;
}

.copy {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--background);
  color: var(--muted-foreground);
  font: inherit;
  font-size: 0.95rem;
  padding: 2px 8px;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
}

.copy:hover {
  color: var(--foreground);
}

.seg {
  display: inline-flex;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
}

.seg-item {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted-foreground);
  font: inherit;
  font-size: 0.95rem;
  padding: 2px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.seg-item[aria-pressed="true"] {
  background: var(--primary);
  color: var(--primary-foreground);
}

/* callouts */

.callout {
  margin: 16px 0 6px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--muted);
  font-size: 0.95rem;
}

.callout p {
  margin: 0;
}

.callout-title {
  margin-bottom: 3px !important;
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--accent);
}

.callout--warn {
  border-color: color-mix(in srgb, var(--warn) 28%, var(--border));
  background: var(--warn-soft);
}

.callout--warn .callout-title {
  color: var(--warn);
}

.callout--info .callout-title {
  color: var(--muted-foreground);
}

.list {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.list li {
  margin-bottom: 5px;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  border-top: 1px solid var(--border);
}

.steps li {
  position: relative;
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  grid-template-areas: "n title" "n body";
  column-gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  grid-area: n;
  font-size: 0.95rem;
  color: var(--accent);
  padding-top: 2px;
}

.steps b {
  grid-area: title;
  font-size: 0.95rem;
  font-weight: 600;
}

.steps span {
  grid-area: body;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.steps code {
  background: var(--muted);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--foreground);
}

/* figures */

.figure {
  margin: 0 0 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.figure-zoom {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.figure img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--border);
  transition: opacity 140ms ease;
}

.figure-zoom:hover img {
  opacity: 0.92;
}

.figure figcaption {
  padding: 8px 12px;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.docnav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 720px;
  margin: 44px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.docnav-btn {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--foreground);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.docnav-btn:hover {
  background: var(--muted);
}

.docnav-next {
  align-items: flex-end;
  text-align: right;
}

.docnav-dir {
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.docnav-name {
  font-size: 0.95rem;
}

.noscript {
  margin: 0;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--warn-soft);
  font-size: 0.95rem;
}

/* ---------- rail ---------- */

.rail {
  position: sticky;
  top: 46px;
  height: calc(100vh - 46px);
  overflow-y: auto;
  padding: 20px 14px 24px;
  background: var(--shell-rail);
  border-left: 1px solid var(--border);
  font-size: 0.95rem;
}

.rail-block + .rail-block {
  margin-top: 24px;
}

.rail h2 {
  margin: 0 0 7px;
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--muted-foreground);
}

.outline,
.rail-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.outline a,
.rail-links a {
  display: block;
  padding: 3px 9px;
  border-radius: 5px;
  color: var(--foreground);
}

.outline a:hover,
.rail-links a:hover {
  background: var(--muted);
  text-decoration: none;
}

.outline a[aria-current="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.rail-note {
  margin: 24px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* ---------- status bar ---------- */

.statusbar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 27px;
  padding: 0 12px;
  border-top: 1px solid var(--border);
  background: var(--shell);
  font-size: 0.95rem;
  color: var(--muted-foreground);
  font-variant-numeric: tabular-nums;
}

.sep {
  width: 1px;
  height: 10px;
  background: var(--border);
}

.status-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  padding: 1px 4px;
  border-radius: 4px;
  cursor: pointer;
}

.status-btn:hover {
  color: var(--foreground);
  background: var(--muted);
}

/* ---------- palette ---------- */

.palette {
  width: min(560px, calc(100vw - 28px));
  margin: 12vh auto auto;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--card);
  color: var(--foreground);
  box-shadow: 0 24px 64px -24px rgb(0 0 0 / 45%);
}

.palette::backdrop {
  background: rgb(10 10 10 / 32%);
}

.palette-inner {
  padding: 0;
}

.palette-input {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 13px;
  border-bottom: 1px solid var(--border);
  color: var(--muted-foreground);
}

.palette-input input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--foreground);
  font: inherit;
  font-size: 0.95rem;
}

.palette-input input:focus {
  outline: none;
}

.palette-input kbd {
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--muted);
  font-size: 0.95rem;
}

.palette-list {
  margin: 0;
  padding: 6px;
  list-style: none;
  max-height: min(52vh, 420px);
  overflow-y: auto;
}

.palette-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
}

.palette-item[aria-selected="true"] {
  background: var(--accent-soft);
  color: var(--accent);
}

.palette-kind {
  margin-left: auto;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.palette-item[aria-selected="true"] .palette-kind {
  color: var(--accent);
}

.palette-empty {
  margin: 0;
  padding: 16px;
  text-align: center;
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

/* ---------- lightbox ---------- */

.lightbox {
  width: min(1100px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--card);
  color: var(--foreground);
  overflow: auto;
}

.lightbox::backdrop {
  background: rgb(10 10 10 / 60%);
}

.lightbox img {
  display: block;
  width: 100%;
  height: auto;
}

.lightbox p {
  margin: 0;
  padding: 9px 13px;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--muted-foreground);
}

.lightbox-close {
  position: sticky;
  top: 8px;
  float: right;
  margin: 8px;
  padding: 3px 9px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--foreground);
  font: inherit;
  font-size: 0.95rem;
  cursor: pointer;
}

/* ---------- toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translate(-50%, 12px);
  padding: 7px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--foreground);
  font-size: 0.95rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 50;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- responsive ---------- */

@media (max-width: 1120px) {
  .workspace {
    grid-template-columns: 224px minmax(0, 1fr);
  }

  .rail {
    display: none;
  }
}

@media (max-width: 880px) {
  .workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    position: static;
    height: auto;
    padding: 9px 10px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .tree {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .tree::-webkit-scrollbar {
    display: none;
  }

  .tree-heading,
  .sidebar-foot,
  .tree-list:last-of-type {
    display: none;
  }

  .tree-list {
    display: contents;
  }

  .tree-file {
    width: auto;
    padding: 4px 9px;
    border: 1px solid var(--border);
    white-space: nowrap;
  }

  .tree-dot {
    display: none;
  }

  .content {
    padding: 22px 16px 72px;
  }

  .doc-crumbs {
    margin-bottom: 12px;
  }

  .props {
    grid-template-columns: minmax(0, 1fr);
  }

  .tab {
    padding: 0 8px;
    font-size: 0.95rem;
  }

  .vault-name,
  .search-label,
  .search-trigger kbd {
    display: none;
  }

  .search-trigger {
    width: 28px;
    padding: 0;
    justify-content: center;
  }
}

@media (max-width: 720px) {
  .titlebar-tools .btn {
    display: none;
  }
}

@media (max-width: 520px) {
  .vault-ver {
    display: none;
  }

  h1 {
    font-size: 1.5rem;
  }

  .statusbar > span:nth-child(3),
  .statusbar > span:nth-child(5) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .titlebar,
  .sidebar,
  .rail,
  .statusbar,
  .copy,
  .seg,
  .filterbar,
  .doc-crumbs,
  .toast,
  .figure-zoom {
    display: none !important;
  }

  .workspace {
    display: block;
  }

  .content {
    padding: 0;
  }

  .doc[hidden] {
    display: block !important;
  }

  .figure img {
    border: 0;
  }
}

/* ---------- motion ---------- */

:root {
  --dur-1: 130ms;
  --dur-2: 210ms;
  --dur-3: 360ms;
  --ease-out: cubic-bezier(.22, .61, .36, 1);
}

.btn,
.tab,
.chip,
.copy,
.seg-item,
.search-trigger,
.figure-zoom,
.tabs a {
  transition:
    color var(--dur-2) var(--ease-out),
    background-color var(--dur-2) var(--ease-out),
    border-color var(--dur-2) var(--ease-out),
    transform var(--dur-1) var(--ease-out);
}

.btn:hover,
.figure-zoom:hover {
  border-color: var(--foreground);
  background: var(--muted);
}

.btn:active,
.copy:active,
.seg-item:active,
.search-trigger:active {
  transform: translateY(1px);
  transition-duration: 60ms;
}

.tab:active {
  transform: translateY(1px);
  transition-duration: 60ms;
}

.copy.is-copied {
  border-color: var(--accent);
  color: var(--accent);
}

.filterbar input,
.palette input {
  transition:
    border-color var(--dur-2) var(--ease-out),
    box-shadow var(--dur-2) var(--ease-out),
    background-color var(--dur-2) var(--ease-out);
}

.filterbar input:focus,
.palette input:focus {
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.table tbody tr {
  transition: background-color var(--dur-2) var(--ease-out);
}

.figure img {
  transition: transform var(--dur-3) var(--ease-out), opacity var(--dur-2) var(--ease-out);
}

.figure-zoom:hover img {
  transform: scale(1.005);
}

.palette,
.palette-panel,
.lightbox {
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:active,
  .tab:active,
  .copy:active,
  .seg-item:active,
  .search-trigger:active,
  .figure-zoom:hover img {
    transform: none !important;
  }
}