* {
  box-sizing: border-box;
}

:root {
  --border-radius-xs: 0.0625rem;
  --border-radius-sm: 0.125rem;
  --border-radius-md: 0.25rem;
  --border-radius-lg: 0.5rem;
  --border-radius-full: 99rem;
}

html {
  height: 100%;
  width: 100%;
  /* Prevent rubber-band effect when scrolling via touchpad on macOS. */
  overscroll-behavior: none;
  cursor: default;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  color: var(--color-text-primary);
  background-color: var(--color-surface-base);
}

a,
a:link,
a:visited,
a:hover,
a:active,
a:focus {
  color: inherit;
  text-decoration: none;
  background: transparent;
  cursor: pointer;
}

a {
  display: inline;
  font-weight: inherit;
  font-style: inherit;
  font-size: inherit;
  line-height: inherit;
  font-family: inherit;
}

::selection {
  background: var(--color-feedback-warning-border);
  color: var(--color-text-primary);
}

.global-flex {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.global-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  border-radius: var(--border-radius-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}
.global-icon-button:hover,
.global-icon-button:focus-visible {
  background-color: var(--color-surface-subtle);
  color: var(--color-text-primary);
}

.global-tab {
  padding-left: 0.5rem;
  border-left: 1px solid var(--color-border-mid);
  margin-left: 1rem;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  column-gap: 0.5rem;
}

.global-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface-strong);
  border-radius: var(--border-radius-sm);
  height: 1.5rem;
  padding: 0 0.5rem;
  min-width: 1.5rem;
  font: var(--txt-body-s-regular);
  flex-shrink: 0;
}

.global-counter-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  min-width: 1.25rem;
  padding: 0.125rem 0.25rem;
  border-radius: 1px;
  background-color: var(--color-surface-alpha-subtle);
  color: var(--color-text-secondary);
  font: var(--txt-body-s-regular);
  flex-shrink: 0;
}

.global-link {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.global-link:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

:root {
  .global-os-theme-radicle {
    --os-size: 16px;
    --os-handle-border-radius: 4px;
    --os-padding-perpendicular: 4px;
    --os-padding-axis: 2px;
    --os-handle-bg: var(--color-border-mid);
    --os-handle-bg-hover: var(--color-border-mid);
    --os-handle-bg-active: var(--color-border-mid);
    --os-track-bg: transparent;
  }
}

:root {
  --elevation-low: 0 0 48px 0 #000000ee;
}

[data-theme="light"] {
  --elevation-low: 0 0 16px 0 #00000022;
}

/*
  Breakpoints
  ===========
    mobile             0px -  719.98px
    small desktop    720px - 1010.98px
    medium desktop  1011px - 1349.98px
    desktop         1350px -      ∞ px
*/

@media (max-width: 719.98px) {
  body {
    min-width: 0;
  }
  .global-hide-on-mobile-down {
    display: none !important;
  }
}

@media (max-width: 1010.98px) {
  .global-hide-on-small-desktop-down {
    display: none !important;
  }
}

@media (max-width: 1349.98px) {
  .global-hide-on-medium-desktop-down {
    display: none !important;
  }
}

@media (min-width: 720px) {
  .global-hide-on-small-desktop-up {
    display: none !important;
  }
}

@media (min-width: 1011px) {
  .global-hide-on-medium-desktop-up {
    display: none !important;
  }
}

@media (min-width: 1350px) {
  .global-hide-on-desktop-up {
    display: none !important;
  }
}

/* Feeds the app's tokens into `@pierre/diffs`. Its shadow roots read these
   custom properties, which inherit across the boundary, so anything hosting a
   Pierre diff — `PierreDiff` for a whole revision, `PierreSnippet` for the few
   lines a comment is about — carries this class. Instance-specific values
   (`--diffs-line-height`, the sticky offsets) stay inline on the element. */
.global-pierre-surface {
  /* Code font and sizing, matching `--txt-code-regular`. The line height is set
     on the element itself as a whole-pixel value that mirrors Pierre's
     `itemMetrics.lineHeight`, so rendered rows and its model agree. */
  --diffs-font-family: var(--font-family-code);
  --diffs-font-size: 0.875rem;

  /* Chrome colours from our design tokens. Syntax token colours still come from
     the Shiki theme (github light/dark); these only retint the diff surfaces,
     line numbers, and add/delete/modify accents so the frame matches the app
     without changing the highlighting look and feel.

     The base *surface* cannot be set here: the Shiki theme writes
     `--diffs-light-bg`/`--diffs-dark-bg` directly onto the shadow `:host`, which
     beats any value inherited from a light-DOM ancestor. So `--diffs-bg` is
     forced to the app's view background in `cardUnsafeCSS` (a higher `@layer`)
     instead — every neutral surface and the change-tint mixes derive from it. */
  --diffs-light: var(--color-text-primary);
  --diffs-dark: var(--color-text-primary);
  /* Line numbers. */
  --diffs-fg-number-override: var(--color-text-tertiary);
  /* Add / delete / modify accents feed the line-tint mixes. */
  --diffs-addition-color-override: var(--color-feedback-success-text);
  --diffs-deletion-color-override: var(--color-feedback-error-text);
  --diffs-modified-color-override: var(--color-text-brand);
  /* Mixed into the background of every line a comment refers to. */
  --app-diff-comment-tint: var(--color-surface-brand-secondary);

  /* The app disables selection globally on `html` and opts in per element.
     `user-select` inherits across the shadow boundary, so opt the whole Pierre
     subtree back in; its own CSS keeps gutters and line numbers unselectable. */
  -webkit-user-select: text;
  user-select: text;
}