* { box-sizing: border-box; }

/* Match native controls to the active theme. */
html { min-height: 100%; background: var(--fo-page); color-scheme: dark; }
[data-theme="light"] { color-scheme: light; }

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  cursor: default;
  background: var(--fo-page);
  color: var(--fo-text);
  font: var(--fs-body)/var(--lh-body) var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* 100vw can include the scrollbar and overflow the viewport. */
  overflow-x: hidden;
}
body > #app { min-height: 100vh; display: flex; flex-direction: column; }
[v-cloak] { display: none !important; }

::selection { background: var(--color-accent); color: var(--color-on-accent); }

a { cursor: pointer; color: var(--color-accent); text-decoration: none; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
.site-main p a, .empty-state a, .breadcrumbs a { text-decoration: underline; }
p { margin: 0 0 var(--gap-md); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
textarea:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.muted { color: var(--fo-muted); }
code {
  color: var(--color-accent);
  background: var(--fo-surface-hover);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.skip-link {
  position: absolute; top: -48px; left: var(--gap-md);
  background: var(--color-accent); color: var(--color-on-accent);
  padding: 10px 16px; border-radius: var(--fo-radius-control);
  font-weight: 600; font-size: var(--fs-ui); z-index: 200;
  transition: top .15s ease;
}
.skip-link:focus { top: var(--gap-md); text-decoration: none; }


h1, h2, h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--fo-text);
}
h1 { font-size: var(--fs-h1); margin: 0 0 var(--gap-sm); }
h2 { font-size: var(--fs-h2); font-weight: 600; margin: var(--gap-32) 0 var(--gap-12); }
h3 { font-size: var(--fs-h3); font-weight: 600; margin: var(--gap-lg) 0 var(--gap-sm); letter-spacing: -0.01em; }

.page-title { position: relative; padding-left: 16px; }
.page-title::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px;
  background: var(--color-accent); transform: skewX(-12deg);
}

.page-heading { margin-bottom: var(--gap-32); }
.page-heading.compact { margin-bottom: var(--gap-lg); }
.page-heading-row {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: var(--gap-md); flex-wrap: wrap;
}
.page-heading h1, .page-heading-row h1 { margin-bottom: var(--gap-sm); }
.page-kicker {
  display: inline-flex; align-items: center; gap: var(--gap-sm);
  margin-bottom: var(--gap-sm); color: var(--color-accent);
  font-size: var(--fs-small); font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase;
}
.page-kicker::before {
  content: ''; width: 28px; height: 3px;
  background: var(--color-accent); transform: skewX(-16deg);
}
.page-description {
  max-width: var(--content-readable); margin: 0;
  color: var(--fo-muted); font-size: 17px; line-height: 1.55;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--gap-sm);
  margin: var(--gap-lg) 0 var(--gap-sm);
  padding-bottom: var(--gap-xs);
  border-bottom: var(--border-w) solid var(--fo-line);
}
.section-head h2 { margin: 0; padding-bottom: 0; border-bottom: none; }
.section-head .section-head-link {
  font-size: var(--fs-ui);
  font-weight: 600;
  white-space: nowrap;
}


.site-main {
  position: relative;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--gap-32) var(--container-pad) 64px;
  flex: 1 0 auto;
}

.row { display: flex; gap: var(--gap-sm); flex-wrap: wrap; align-items: center; margin-bottom: var(--gap-sm); }
.row:last-child { margin-bottom: 0; }
.row .spacer { flex: 1 1 var(--gap-lg); min-width: var(--gap-lg); }
.flush-top { margin-top: 0 !important; }
.flush-bottom { margin-bottom: 0 !important; }
.space-top { margin-top: var(--gap-12); }
.code-block { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; }
.text-block { white-space: pre-line; }
.heading-action { float: right; margin-left: var(--gap-sm); }


.clickable { cursor: pointer; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--fo-surface-hover); border: var(--border-w) solid var(--fo-line);
  border-radius: var(--fo-radius-control);
  padding: 4px 10px; font-size: var(--fs-small);
}
.chip a { color: var(--fo-muted); }
.chip a:hover { color: var(--color-danger); text-decoration: none; }
.chip--current { border-color: var(--color-accent); color: var(--color-accent); }

.divider { border: none; border-top: var(--border-w) solid var(--fo-line); margin: var(--gap-md) 0; }

.empty-state {
  color: var(--fo-muted);
  padding: var(--gap-lg) 0;
  font-size: var(--fs-ui);
  border-top: var(--border-w) dashed var(--fo-line);
  margin-top: var(--gap-sm);
}
.fo-empty { display: grid; place-items: center; gap: 12px; padding: 25px; text-align: center; }
/* Author display:grid overrides the browser's default [hidden] rule. */
.fo-empty[hidden] { display: none; }
.fo-empty img { width: 104px; height: 115px; object-fit: contain; }
.fo-empty p { max-width: 32ch; color: var(--fo-muted); font-size: var(--fs-ui); margin: 0; }
.fo-empty strong { display: block; color: var(--fo-text); font-size: var(--fs-h3); }
.notice {
  display: grid; grid-template-columns: 4px minmax(0, 1fr); gap: var(--gap-12);
  margin: var(--gap-md) 0; padding: var(--gap-md);
  background: var(--fo-surface); border: var(--border-w) solid var(--fo-line);
  clip-path: var(--fo-shape-panel); color: var(--fo-muted);
}
.notice::before { content: ''; display: block; border-radius: 2px; background: var(--color-accent); }
.notice-danger::before { background: var(--color-danger); }
.notice-warning::before { background: var(--color-warning); }
.notice-success::before { background: var(--color-success); }
.notice > :last-child { margin-bottom: 0; }
.mobile-label { display: none; }