advanced-camera-card/src/scss/card.scss

:host {
  display: block;

  // Anchor absolutes to the outermost part of the card.
  position: relative;

  // Different browsers use different colors as their fullscreen background,
  // this ensures the same experience across all browsers.
  background-color: var(--card-background-color);

  // The primary border-radius used is the div.main. This is only useful for
  // keeping the background-color within the radius.
  border-radius: var(--ha-card-border-radius, 4px);

  // The standard HA header is 56 pixels wide, so that much off the top (header)
  // and bottom (to maintain center), before doing the calculation of
  // max-height. This matters on small mobile devices in landscape orientation.
  --frigate-card-expand-max-height: calc( ( 100vh - (2 * 56px) ) * 0.85 );
  --frigate-card-expand-max-width: 85vw;
  --frigate-card-expand-width: none;
  --frigate-card-expand-height: none;
  --frigate-card-expand-aspect-ratio: unset;
}

:host([dark]) {
  filter: brightness(75%);
}
:host([panel]) {
  // Card always extends to the full allowed height in panel mode (in non-panel
  // mode this would cause the card to expand to the height of a column).
  height: 100%;
}

div.main {
  position: relative;
  overflow: auto;
  width: 100%;
  height: 100%;
  margin: auto;
  display: flex;
  justify-content: center;

  // Necessary to get Safari to show border-radius correctly.
  transform: translateZ(0);

  // Include the borders in the sizing (to keep the triggered warning pulse
  // visible in fullscreen).
  box-sizing: border-box;

  // Hide scrollbar: Firefox
  scrollbar-width: none;
  // Hide scrollbar: IE and Edge
  -ms-overflow-style: none;
}

/* Hide scrollbar for Chrome, Safari and Opera */
div.main::-webkit-scrollbar {
  display: none;
}

// Need to apply the border radius on the container level, as the ha-card has
// overflow visible in order to allow a submenu to extend beyond the card
// boundary. Need to be able to selectively curve top or bottom depending on
// whether the outside menu is being shown. There's no way to select 'preceding
// element' in CSS, so this must be implemented in JS.
div.main.curve-top {
  border-top-left-radius: var(--ha-card-border-radius, 4px);
  border-top-right-radius: var(--ha-card-border-radius, 4px);
}
div.main.curve-bottom {
  border-bottom-left-radius: var(--ha-card-border-radius, 4px);
  border-bottom-right-radius: var(--ha-card-border-radius, 4px);
}

/* The 'hover' menu mode is styled applied outside of the menu itself */
frigate-card-menu[data-style*='hover'] {
  z-index: 1;
  transition: opacity 0.5s ease;
}

.main + frigate-card-menu[data-style*='hover'] {
  opacity: 0;
}
frigate-card-menu[data-style='hover']:hover {
  opacity: 1;
}
.main:hover + frigate-card-menu[data-style='hover-card'],
frigate-card-menu[data-style='hover-card']:hover {
  opacity: 1;
}

ha-card {
  display: flex;
  flex-direction: column;
  margin: auto;

  border: 0px;

  // Some elements (such as submenus) may need to extend beyond the card boundary.
  overflow: visible;
  width: 100%;
  height: 100%;
  position: static;
  color: var(--secondary-text-color, white);
}
ha-card.triggered {
  @keyframes warning-pulse {
    0% {
      border: solid 2px rgba(0, 0, 0, 0);
    }
    50% {
      border: solid 2px var(--warning-color);
    }
    100% {
      border: solid 2px rgba(0, 0, 0, 0);
    }
  }
  animation: warning-pulse 5s infinite;
}

frigate-card-live.hidden {
  // Live view will be rendered but hidden for live preloading.
  display: none;
}

/************
 * Fullscreen
 *************/

// Browsers will reject invalid whole CSS selectors if one selector is bad, so
// need to use mixin here instead of just comma-separated selectors.
//  - Related: https://stackoverflow.com/questions/16982449/why-isnt-it-possible-to-combine-vendor-specific-pseudo-elements-classes-into-on
@mixin fullscreen-ha-card {
  // Hide corners on Safari fullscreen.
  border-radius: 0px;

  // Theme styles may set these which are not helpful in fullscreen mode, reset
  // them.
  box-shadow: none;
  margin: 0;
}

// Need to use an id selector here to overcome theme styling that may
// incorrectly apply to ha-card style.
:host(:fullscreen) #ha-card {
  @include fullscreen-ha-card;
}
:host(:-webkit-full-screen) #ha-card {
  @include fullscreen-ha-card;
}

@mixin fullscreen-no-rounded-corners {
  // Hide corners on Safari fullscreen.
  border-radius: 0px;
}

:host(:fullscreen) div.main,
:host(:fullscreen) frigate-card-menu {
  @include fullscreen-no-rounded-corners;
}
:host(:-webkit-full-screen) div.main,
:host(:-webkit-full-screen) frigate-card-menu {
  @include fullscreen-no-rounded-corners;
}

/***************
 * Expanded mode
 ***************/

web-dialog {
  --dialog-padding: 0px;
  --dialog-container-padding: 0px;

  --dialog-max-height: var(--frigate-card-expand-max-height);
  --dialog-max-width: var(--frigate-card-expand-max-width);

  --dialog-width: var(--frigate-card-expand-width);
  --dialog-height: var(--frigate-card-expand-height);

  // Allow submenus to flow outside the edge of the dialog.
  --dialog-overflow-x: visible;
  --dialog-overflow-y: visible;
}

web-dialog::part(dialog) {
  aspect-ratio: var(--frigate-card-expand-aspect-ratio);
}