[data-window-layer] {
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 1;
}

[data-app-window] {
  background: var(--os-surface);
  border: 1px solid var(--os-surface-highlight);
  box-shadow: 6px 6px 0 var(--os-shadow);
  display: flex;
  flex-direction: column;
  min-height: 0;
  pointer-events: auto;
  position: absolute;
  transition:
    opacity var(--ui-duration) var(--ease-out),
    clip-path var(--ui-duration) var(--ease-out),
    box-shadow var(--ui-duration) var(--ease-out);

  @starting-style {
    opacity: 0;
    clip-path: inset(0 0 10px 0);
  }
}

[data-app-window][data-window-active='true'] { box-shadow: 9px 9px 0 var(--os-shadow); }
[data-app-window][data-window-active='false'] { box-shadow: 4px 4px 0 var(--os-shadow); }

[data-app-window][data-window-fullscreen='true'],
[data-app-window][data-window-fullscreen='true'][data-window-active='true'] { box-shadow: none; }

[data-app-window][hidden] {
  display: none;
}

[data-app-window][data-window-status='minimized'] {
  pointer-events: none;
}

[data-window-titlebar] {
  align-items: center;
  background: var(--os-surface-raised);
  border-bottom: 1px solid var(--os-surface-highlight);
  color: var(--os-ink);
  cursor: move;
  display: flex;
  flex: 0 0 32px;
  justify-content: space-between;
  padding-left: 10px;
  touch-action: none;
  user-select: none;
}

[data-window-title] {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

[data-window-controls] {
  align-self: stretch;
  display: flex;
}

[data-window-controls] button {
  background: var(--os-surface);
  border: 0;
  border-left: 1px solid var(--os-surface-highlight);
  border-radius: 0;
  color: var(--os-ink);
  font-family: var(--mono);
  font-size: 13px;
  min-width: 32px;
  padding: 0;
  transition:
    transform var(--press-duration) var(--ease-out),
    background-color var(--ui-duration) ease,
    color var(--ui-duration) ease;
}

@media (hover: hover) and (pointer: fine) {
  [data-window-controls] button:hover {
    background: var(--os-accent);
    color: var(--os-canvas);
  }
}

[data-window-controls] button:focus-visible,
[data-running-app]:focus-visible {
  outline: var(--os-focus-width) solid var(--os-accent-bright);
  outline-offset: 2px;
}

[data-window-content] {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 24px;
}

[data-window-placeholder] {
  align-items: center;
  display: flex;
  font-family: var(--mono);
  height: 100%;
  justify-content: center;
  margin: 0;
  text-align: center;
  flex-direction: column;
  gap: 16px;
}

[data-window-placeholder] h3 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
}

[data-placeholder-code],
[data-placeholder-status] { font-size: 10px; }
[data-placeholder-primary] { border: var(--stroke); padding: 10px 16px; }

[data-running-apps] {
  align-items: center;
  display: flex;
  flex: 1;
  gap: 6px;
  min-width: 0;
}

[data-running-app] {
  background: var(--os-surface);
  border: 1px solid var(--os-surface-highlight);
  border-radius: 0;
  color: var(--os-ink);
  font-family: var(--mono);
  font-size: 10px;
  height: 30px;
  max-width: 144px;
  overflow: hidden;
  padding: 3px 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition:
    transform var(--press-duration) var(--ease-out),
    background-color var(--ui-duration) ease,
    color var(--ui-duration) ease;
}

[data-running-app][aria-pressed='true'] {
  background: var(--os-accent);
  color: var(--os-canvas);
}

[data-running-app][data-minimized='true'] {
  border-style: dashed;
}

[data-desktop-mode='windows'] [data-macos-dock] > [data-running-apps] {
  display: none;
}

@media (max-width: 760px) {
  [data-app-window] {
    cursor: default;
  }

  [data-window-titlebar] {
    cursor: default;
  }
}