/* Copied by design/build-tokens.ts from design/glass.css. Do not edit. */
/*
 * Netheremp Liquid Glass (docs/glass-design-spec.md section 3), shared by
 * the Vault and the homepage. Built only from tokens.css variables.
 *
 * Glass is the navigation and control layer; content stays solid. One glass
 * layer only: children of a glass element are plain. Web approximation of
 * the iOS 27 kit recipe: backdrop blur and saturation (for refraction), a
 * level-scaled tint, a hairline ring, top and bottom edge highlights and a
 * soft shadow. CSS cannot morph shapes, so motion uses springs on scale and
 * opacity instead.
 *
 * --glass-level (0 clearest .. 1 most tinted) comes from the account
 * preference; accessibility settings override it below.
 */
:root {
  --glass-level: var(--glass-level-default);
  --glass-effective: var(--glass-level);
}

@media (prefers-contrast: more) {
  :root {
    --glass-effective: 1;
  }
}

.glass,
.glass-control,
.glass-group {
  --_tint: color-mix(
    in srgb,
    var(--glass-tint-tinted) calc(var(--glass-effective) * 100%),
    var(--glass-tint-clear)
  );
  -webkit-backdrop-filter: blur(var(--glass-blur-surface)) saturate(var(--glass-saturation));
  backdrop-filter: blur(var(--glass-blur-surface)) saturate(var(--glass-saturation));
  background-color: var(--_tint);
  color: var(--color-label-vibrant);
  /* Legibility on Clear glass over opposite-coloured content (vibrancy). */
  text-shadow: 0 0 6px var(--glass-text-halo);
  box-shadow:
    0 var(--glass-blur-shadow-offset) var(--glass-blur-shadow) var(--glass-shadow),
    0 0 0 0.5px var(--glass-ring),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 var(--glass-highlight);
}

/* Surfaces: menus, popovers, sheets, floating panels. */
.glass {
  border-radius: var(--radius-surface);
}

/* Controls and groups: capsules and circles with the lighter control frost. */
.glass-control,
.glass-group {
  --_tint: color-mix(
    in srgb,
    var(--glass-control-tint-tinted) calc(var(--glass-effective) * 100%),
    var(--glass-control-tint-clear)
  );
  -webkit-backdrop-filter: blur(var(--glass-blur-control)) saturate(var(--glass-saturation));
  backdrop-filter: blur(var(--glass-blur-control)) saturate(var(--glass-saturation));
  border-radius: var(--radius-capsule);
  box-shadow:
    0 var(--glass-blur-shadow-offset) var(--glass-blur-control-shadow) var(--glass-control-shadow),
    0 0 0 0.5px var(--glass-ring),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 var(--glass-highlight);
}

.glass-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-width: var(--size-control);
  min-height: var(--size-control);
  padding: 0 var(--space-4);
  border: 0;
  font: inherit;
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  letter-spacing: var(--text-body-tracking);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--motion-duration-quick) var(--motion-easing-spring),
    filter var(--motion-duration-quick) var(--motion-easing-standard);
}

.glass-control.round {
  width: var(--size-control);
  padding: 0;
}

.glass-control.large {
  min-height: var(--size-control-large);
}

.glass-control.large.round {
  width: var(--size-control-large);
}

/* The one prominent action: the brand accent under the glass highlights. */
.glass-control.prominent {
  --_tint: var(--color-accent);
  color: var(--color-on-accent);
  text-shadow: none;
}

/* Disabled prominent: a neutral fill, as iOS greys a filled button. */
.glass-control.prominent:disabled {
  --_tint: var(--color-fill-secondary);
  color: var(--color-label-tertiary);
  opacity: 1;
}

/* Related actions share one capsule; the buttons inside are plain. */
.glass-group {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-1);
}

.glass-group > .plain-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--size-control);
  min-height: var(--size-control);
  border: 0;
  border-radius: var(--radius-capsule);
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.glass-group > .plain-control + .plain-control {
  box-shadow: -0.5px 0 0 var(--color-separator);
}

@media (hover: hover) {
  .glass-control:hover,
  .glass-group > .plain-control:hover {
    filter: brightness(1.06);
  }
}

.glass-control:active,
.glass-group > .plain-control:active {
  transform: scale(0.96);
}

.glass-control:focus-visible,
.glass-group > .plain-control:focus-visible,
.glass:focus-visible {
  outline: 2px solid var(--color-accent-text);
  outline-offset: 2px;
}

.glass-control:disabled,
.glass-group > .plain-control:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
  filter: none;
}

/* Fields: a capsule with the control frost, for search and the composer. */
.glass-field {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--size-control);
  padding: 0 var(--space-4);
}

.glass-field > input,
.glass-field > textarea {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: var(--text-body-size);
  outline: none;
}

.glass-field:focus-within {
  outline: 2px solid var(--color-accent-text);
  outline-offset: 2px;
}

/*
 * Scroll edge effect: content fades and blurs as it passes under floating
 * chrome. Place .scroll-edge-top / .scroll-edge-bottom as the first / last
 * child of the scrolling element.
 */
.scroll-edge-top,
.scroll-edge-bottom {
  position: sticky;
  z-index: 1;
  display: block;
  pointer-events: none;
  -webkit-backdrop-filter: blur(var(--glass-scroll-edge-blur));
  backdrop-filter: blur(var(--glass-scroll-edge-blur));
}

.scroll-edge-top {
  top: 0;
  height: var(--glass-scroll-edge-top);
  margin-bottom: calc(-1 * var(--glass-scroll-edge-top));
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent);
  mask-image: linear-gradient(to bottom, #000, transparent);
}

.scroll-edge-bottom {
  bottom: 0;
  height: var(--glass-scroll-edge-bottom);
  margin-top: calc(-1 * var(--glass-scroll-edge-bottom));
  -webkit-mask-image: linear-gradient(to top, #000, transparent);
  mask-image: linear-gradient(to top, #000, transparent);
}

/* Solid fallbacks: no blur support, or the system asks for less transparency. */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass,
  .glass-control:not(.prominent),
  .glass-group {
    background-color: var(--color-background-elevated);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .glass,
  .glass-control:not(.prominent),
  .glass-group {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background-color: var(--color-background-elevated);
  }

  .scroll-edge-top,
  .scroll-edge-bottom {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .glass-control,
  .glass-group > .plain-control {
    transition: none;
  }

  .glass-control:active,
  .glass-group > .plain-control:active {
    transform: none;
  }
}

/*
 * Icons from icons.svg, sized and weighted to sit beside SF Symbols: about
 * 22px in a 44pt control at regular weight, with round caps and joins.
 */
.icon {
  width: 1.3em;
  height: 1.3em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.25em;
}

.icon.small {
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
}

.icon.bold {
  stroke-width: 2.25;
}