ionic-framework/core/src/css/core.scss

@use "sass:map";
@import "../themes/native/native.globals";
@import "../components/menu/menu.ios.vars";
@import "../components/menu/menu.md.vars";

:root {
  /**
   * Loop through each color object from the
   * `ionic.theme.default.scss` file
   * and generate CSS Variables for each color.
   */
  @each $color-name, $value in $colors {
    --ion-color-#{$color-name}: #{map.get($value, base)};
    --ion-color-#{$color-name}-rgb: #{color-to-rgb-list(map.get($value, base))};
    --ion-color-#{$color-name}-contrast: #{map.get($value, contrast)};
    --ion-color-#{$color-name}-contrast-rgb: #{color-to-rgb-list(map.get($value, contrast))};
    --ion-color-#{$color-name}-shade: #{map.get($value, shade)};
    --ion-color-#{$color-name}-tint: #{map.get($value, tint)};
  }
}

// Ionic Font Family
// --------------------------------------------------

html.ios {
  --ion-default-font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Roboto", sans-serif;
}
html.md {
  --ion-default-font: "Roboto", "Helvetica Neue", sans-serif;
}

html {
  --ion-dynamic-font: -apple-system-body;
  --ion-font-family: var(--ion-default-font);
}

body {
  background: var(--ion-background-color);
  color: var(--ion-text-color);
}

body.backdrop-no-scroll {
  overflow: hidden;
}

// Modal - Card Style
// --------------------------------------------------
/**
 * Card style modal needs additional padding on the
 * top of the header. We accomplish this by targeting
 * the first toolbar in the header.
 * Footer also needs this. We do not adjust the bottom
 * padding though because of the safe area.
 */
html.ios ion-modal.modal-card ion-header ion-toolbar:first-of-type,
html.ios ion-modal.modal-sheet ion-header ion-toolbar:first-of-type,
html.ios ion-modal ion-footer ion-toolbar:first-of-type {
  padding-top: 6px;
}

/**
* Card style modal needs additional padding on the
* bottom of the header. We accomplish this by targeting
* the last toolbar in the header.
*/
html.ios ion-modal.modal-card ion-header ion-toolbar:last-of-type,
html.ios ion-modal.modal-sheet ion-header ion-toolbar:last-of-type {
  padding-bottom: 6px;
}

/**
* Add padding on the left and right
* of toolbars while accounting for
* safe area values when in landscape.
*/
html.ios ion-modal ion-toolbar {
  padding-right: calc(var(--ion-safe-area-right) + 8px);
  padding-left: calc(var(--ion-safe-area-left) + 8px);
}

/**
 * Card style modal on iPadOS
 * should only have backdrop on first instance.
 */
@media screen and (min-width: 768px) {
  html.ios ion-modal.modal-card:first-of-type {
    --backdrop-opacity: 0.18;
  }
}

/**
 * Subsequent modals should not have a backdrop/box shadow
 * as it will cause the screen to appear to get progressively
 * darker. With Ionic 6, declarative modals made it
 * possible to have multiple non-presented modals in the DOM,
 * so we could no longer rely on ion-modal:first-of-type.
 * Here we disable the opacity/box-shadow for every modal
 * that comes after the first presented modal.
 *
 * Note: ion-modal:not(.overlay-hidden):first-of-type
 * does not match the first modal to not have
 * the .overlay-hidden class, it will match the
 * first modal in general only if it does not
 * have the .overlay-hidden class.
 * The :nth-child() pseudo-class has support
 * for selectors which would help us here. At the
 * time of writing it does not have great cross browser
 * support.
 *
 * Note 2: This should only apply to non-card and
 * non-sheet modals. Card and sheet modals have their
 * own criteria for displaying backdrops/box shadows.
 *
 * Do not use :not(.overlay-hidden) in place of
 * .show-modal because that triggers a memory
 * leak in Blink: https://bugs.chromium.org/p/chromium/issues/detail?id=1418768
 */
ion-modal.modal-default.show-modal ~ ion-modal.modal-default {
  --backdrop-opacity: 0;
  --box-shadow: none;
}

/**
 * This works around a bug in WebKit where the
 * content will overflow outside of the bottom border
 * radius when re-painting. As long as a single
 * border radius value is set on .ion-page, this
 * issue does not happen. We set the top left radius
 * here because the top left corner will always have a
 * radius no matter the platform.
 * This behavior only applies to card modals.
 */
html.ios ion-modal.modal-card .ion-page {
  border-top-left-radius: var(--border-radius);
}

// Ionic Colors
// --------------------------------------------------
// Generates the color classes and variables based on the
// colors map

@mixin generate-color($color-name) {
  $value: map-get($colors, $color-name);

  $base: map-get($value, base);
  $contrast: map-get($value, contrast);
  $shade: map-get($value, shade);
  $tint: map-get($value, tint);

  --ion-color-base: var(--ion-color-#{$color-name}, #{$base}) !important;
  --ion-color-base-rgb: var(--ion-color-#{$color-name}-rgb, #{color-to-rgb-list($base)}) !important;
  --ion-color-contrast: var(--ion-color-#{$color-name}-contrast, #{$contrast}) !important;
  --ion-color-contrast-rgb: var(--ion-color-#{$color-name}-contrast-rgb, #{color-to-rgb-list($contrast)}) !important;
  --ion-color-shade: var(--ion-color-#{$color-name}-shade, #{$shade}) !important;
  --ion-color-tint: var(--ion-color-#{$color-name}-tint, #{$tint}) !important;
}

@each $color-name, $value in $colors {
  .ion-color-#{$color-name} {
    @include generate-color($color-name);
  }
}

// Page Container Structure
// --------------------------------------------------

.ion-page {
  @include position(0, 0, 0, 0);

  display: flex;
  position: absolute;

  flex-direction: column;
  justify-content: space-between;

  contain: layout size style;
  z-index: $z-index-page-container;
}

/**
 * When making custom dialogs, using
 * ion-content is not required. As a result,
 * some developers may wish to have dialogs
 * that are automatically sized by the browser.
 * These changes allow certain dimension values
 * such as fit-content to work correctly.
 */
ion-modal > .ion-page {
  position: relative;

  contain: layout style;

  height: 100%;
}

.split-pane-visible > .ion-page.split-pane-main {
  position: relative;
}

ion-route,
ion-route-redirect,
ion-router,
ion-select-option,
ion-nav-controller,
ion-menu-controller,
ion-action-sheet-controller,
ion-alert-controller,
ion-loading-controller,
ion-modal-controller,
ion-picker-controller,
ion-popover-controller,
ion-toast-controller,
.ion-page-hidden {
  /* stylelint-disable-next-line declaration-no-important */
  display: none !important;
}

.ion-page-invisible {
  opacity: 0;
}

.can-go-back > ion-header ion-back-button {
  display: block;
}

// Ionic Safe Margins
// --------------------------------------------------

html.plt-ios.plt-hybrid,
html.plt-ios.plt-pwa {
  --ion-statusbar-padding: 20px;
}

@supports (padding-top: 20px) {
  html {
    --ion-safe-area-top: var(--ion-statusbar-padding);
  }
}

@supports (padding-top: env(safe-area-inset-top)) {
  html {
    --ion-safe-area-top: env(safe-area-inset-top);
    --ion-safe-area-bottom: env(safe-area-inset-bottom);
    --ion-safe-area-left: env(safe-area-inset-left);
    --ion-safe-area-right: env(safe-area-inset-right);
  }
}

// Global Card Styles
// --------------------------------------------------

ion-card.ion-color .ion-inherit-color,
ion-card-header.ion-color .ion-inherit-color {
  color: inherit;
}

// Menu Styles
// --------------------------------------------------

.menu-content {
  @include transform(translate3d(0, 0, 0));
}

.menu-content-open {
  cursor: pointer;
  touch-action: manipulation;

  /**
   * The containing element itself should be clickable but
   * everything inside of it should not clickable when menu is open
   *
   * Setting pointer-events after scrolling has already started
   * will not cancel scrolling which is why we also set
   * overflow-y below.
   */
  pointer-events: none;

  /**
   * This accounts for scenarios where the main content itself
   * is scrollable.
   */
  overflow-y: hidden;
}

/**
 * Setting overflow cancels any in-progress scrolling
 * when the menu opens. This prevents users from accidentally
 * scrolling the main content while also dragging the menu open.
 * The code below accounts for both ion-content and then custom
 * scroll containers within ion-content (such as virtual scroll)
 */
.menu-content-open ion-content {
  --overflow: hidden;
}

.menu-content-open .ion-content-scroll-host {
  overflow: hidden;
}

.ios .menu-content-reveal {
  box-shadow: $menu-ios-box-shadow-reveal;
}

[dir="rtl"].ios .menu-content-reveal {
  box-shadow: $menu-ios-box-shadow-reveal-rtl;
}

.ios .menu-content-push {
  box-shadow: $menu-ios-box-shadow-push;
}

.md .menu-content-reveal {
  box-shadow: $menu-md-box-shadow;
}

.md .menu-content-push {
  box-shadow: $menu-md-box-shadow;
}

// Accordion Styles
ion-accordion-group.accordion-group-expand-inset > ion-accordion:first-of-type {
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
}
ion-accordion-group.accordion-group-expand-inset > ion-accordion:last-of-type {
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
}
ion-accordion-group > ion-accordion:last-of-type ion-item[slot="header"] {
  --border-width: 0px;
}

ion-accordion.accordion-animated > [slot="header"] .ion-accordion-toggle-icon {
  transition: 300ms transform cubic-bezier(0.25, 0.8, 0.5, 1);
}

@media (prefers-reduced-motion: reduce) {
  ion-accordion .ion-accordion-toggle-icon {
    /* stylelint-disable declaration-no-important */
    transition: none !important;
  }
}
/**
 * The > [slot="header"] selector ensures that we do
 * not modify toggle icons for any nested accordions. The state
 * of one accordion should not affect any accordions inside
 * of a nested accordion group.
 */
ion-accordion.accordion-expanding > [slot="header"] .ion-accordion-toggle-icon,
ion-accordion.accordion-expanded > [slot="header"] .ion-accordion-toggle-icon {
  transform: rotate(180deg);
}

ion-accordion-group.accordion-group-expand-inset.md > ion-accordion.accordion-previous ion-item[slot="header"] {
  --border-width: 0px;
  --inner-border-width: 0px;
}

ion-accordion-group.accordion-group-expand-inset.md > ion-accordion.accordion-expanding:first-of-type,
ion-accordion-group.accordion-group-expand-inset.md > ion-accordion.accordion-expanded:first-of-type {
  margin-top: 0;
}

// Safari/iOS 15 changes the appearance of input[type="date"].
// For backwards compatibility from Ionic 5/Safari 14 designs,
// we override the appearance only when using within an ion-input.
ion-input input::-webkit-date-and-time-value {
  text-align: start;
}

/**
 * The .ion-datetime-button-overlay class contains
 * styles that allow any modal/popover to be
 * sized according to the dimensions of the datetime
 * when used with ion-datetime-button.
 */
.ion-datetime-button-overlay {
  --width: fit-content;
  --height: fit-content;
}

/**
 * The grid variant can scale down when inline.
 * When used in a `fit-content` overlay, this causes
 * the overlay to shrink when the month/year picker is open.
 * Explicitly setting the dimensions lets us have a consistently
 * sized grid interface.
 */
.ion-datetime-button-overlay ion-datetime.datetime-grid {
  width: 320px;
  min-height: 320px;
}

/**
 * When moving focus on page transitions we call .focus() on an element which can
 * add an undesired outline ring. This CSS removes the outline ring.
 * We also remove the outline ring from elements that are actively being focused
 * by the focus manager. We are intentionally selective about which elements this
 * applies to so we do not accidentally override outlines set by the developer.
 */
[ion-last-focus],
header[tabindex="-1"]:focus,
[role="banner"][tabindex="-1"]:focus,
main[tabindex="-1"]:focus,
[role="main"][tabindex="-1"]:focus,
h1[tabindex="-1"]:focus,
[role="heading"][aria-level="1"][tabindex="-1"]:focus {
  outline: none;
}

/*
 * If a popover has a child ion-content (or class equivalent) then the .popover-viewport element
 * should not be scrollable to ensure the inner content does scroll. However, if the popover
 * does not have a child ion-content (or class equivalent) then the .popover-viewport element
 * should remain scrollable. This code exists globally because popover targets
 * .popover-viewport using ::slotted which only supports simple selectors.
 *
 * Note that we do not need to account for .ion-content-scroll-host here because that
 * class should always be placed within ion-content even if ion-content is not scrollable.
 */
.popover-viewport:has(> ion-content) {
  overflow: hidden;
}

/**
 * :has has cross-browser support, but it is still relatively new. As a result,
 * we should fallback to the old behavior for environments that do not support :has.
 * Developers can explicitly enable this behavior by setting overflow: visible
 * on .popover-viewport if they know they are not going to use an ion-content.
 * TODO FW-6106 Remove this
 */
@supports not selector(:has(> ion-content)) {
  .popover-viewport {
    overflow: hidden;
  }
}