.application {
  position: absolute;
  z-index: var(--z-index-window);
  transform-origin: top left;

  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  min-width: 200px;
  max-height: 100%;
  max-width: 100%;
  overflow: hidden;

  background: var(--background);
  font-size: var(--font-size-14);
  color: var(--color-text-primary);

  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-shadow: 0 0 10px #000;

  &:not(.minimized) {
    min-height: calc(var(--header-height) + 1rem);
  }

  // All Applications have window content
  .window-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    padding: 1rem;
    overflow: hidden;
  }

  // Closing or minimizing the Application
  &.minimizing {
    transition: max-height 0.25s ease-out, max-width 0.25s ease-out;
  }
  &.maximizing {
    transition: max-height 0.25s ease-in, max-width 0.25s ease-in;
  }
  &.minimized .window-content,
  &.minimizing .window-content,
  &.maximizing .window-content {
    display: none;
  }

  // Framed applications have a window header
  .window-header {
    --button-size: 24px;

    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    flex: 0 0 var(--header-height);
    position: relative;
    overflow: hidden;
    padding: 0 0.5rem;
    gap: 0.25rem;
    z-index: 1;
    cursor: grab;

    background: var(--color-header-background);
    font-size: var(--font-size-13);
    color: var(--color-light-1);
    border-bottom: 1px solid var(--color-border);

    .window-icon {
      flex: none;
    }

    .window-title {
      flex: 1;
      font-size: inherit;
      font-family: inherit;
      font-weight: inherit;
      text-shadow: none;
      margin: 0;
      line-height: var(--header-height);
      border: none;
      overflow: hidden;
      text-align: left;
      white-space: nowrap;
      text-overflow: ellipsis;
    }

    button.header-control {
      flex: 0 0 var(--button-size);
      height: var(--button-size);
      padding: 0;
      margin: 0;
      border: none;
    }
  }

  .controls-dropdown {
    position: absolute;
    overflow: hidden auto;
    top: var(--header-height);
    right: 0;
    width: max-content;
    min-width: 100px;
    max-width: 300px;
    max-height: 0;
    z-index: 1;
    list-style: none;
    margin: 0 0.25rem;
    padding: 0;
    background: var(--background);
    border-radius: 0 0 4px 4px;
    transition: max-height 0.5s;
    pointer-events: none;

    &.expanded {
      max-height: calc(100% - var(--header-height));
      pointer-events: all;
      box-shadow: 0 0 8px var(--color-cool-3);
    }
    .header-control {
      margin: 0.25rem;
      > button {
        --button-background-color: none;
        --button-text-color: var(--color-text-primary);
        width: 100%;
        display: flex;
        justify-content: space-between;
        border: none;
        font-size: var(--font-size-12);
      }
    }
  }

  .window-resize-handle {
    position: absolute;
    inset: auto -2px -3px auto;
    width: 11px;
    height: 11px;
    cursor: nwse-resize;
    background: transparent url("../ui/resize-handle.webp") no-repeat center / contain;
  }

  &.minimized .window-resize-handle { display: none; }
}

// Dark theme backdrop filter
.theme-dark .application {
  .window-content {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }
  .window-resize-handle { filter: invert(1); }
}


/**
 * Reduced Transparency Preferences
 */
@media (prefers-reduced-transparency) {
  .theme-dark .application,
  .theme-foundry .application {
    --background: var(--color-cool-5);
  }
  .application .window-content {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .app {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  #tooltip, .locked-tooltip {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}