/*
 * Windows 11-style taskbar, running-app buttons, and system-tray stubs.
 */

.taskbar {
  position: fixed;
  z-index: var(--z-taskbar);
  inset: auto 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: start;
  width: 100%;
  height: var(--taskbar-total-height);
  padding: 4px max(8px, env(safe-area-inset-right, 0px)) var(--taskbar-safe-area) max(8px, env(safe-area-inset-left, 0px));
  border-top: 1px solid var(--border-subtle);
  color: var(--text-primary);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent),
    var(--surface-taskbar);
  box-shadow:
    0 -1px 0 rgba(0, 0, 0, 0.18),
    0 -8px 30px rgba(0, 0, 0, 0.12);
  -webkit-backdrop-filter: blur(var(--blur-taskbar)) saturate(var(--saturate-panel));
  backdrop-filter: blur(var(--blur-taskbar)) saturate(var(--saturate-panel));
  transition:
    transform var(--duration-medium) var(--ease-standard),
    opacity var(--duration-medium) ease;
}

.taskbar.is-hidden,
.desktop-shell.is-fullscreen .taskbar {
  opacity: 0;
  pointer-events: none;
  transform: translateY(100%);
}

.taskbar__inner {
  display: contents;
}

.taskbar-main,
.taskbar-center,
.taskbar-apps {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  height: 40px;
  gap: 2px;
}

.taskbar-start,
.taskbar-app,
.taskbar-search,
.taskbar-widget {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  color: var(--text-primary);
  background: transparent;
  transition:
    background-color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    transform var(--duration-fast) ease;
}

.taskbar-start:hover,
.taskbar-app:hover,
.taskbar-search:hover,
.taskbar-widget:hover,
.taskbar-start.is-open {
  border-color: var(--border-subtle);
  background: var(--surface-layer-hover);
}

.taskbar-start:active,
.taskbar-app:active,
.taskbar-search:active,
.taskbar-widget:active {
  background: var(--surface-layer-pressed);
  transform: scale(0.93);
}

.taskbar-start:focus-visible,
.taskbar-app:focus-visible,
.taskbar-search:focus-visible,
.taskbar-widget:focus-visible,
.tray-button:focus-visible {
  outline-offset: -3px;
}

.taskbar-start::before,
.start-glyph {
  content: "";
  width: 18px;
  height: 18px;
  background:
    linear-gradient(135deg, #4cc5f4, #0b74ce) 0 0 / 8px 8px no-repeat,
    linear-gradient(135deg, #4cc5f4, #0b74ce) 10px 0 / 8px 8px no-repeat,
    linear-gradient(135deg, #4cc5f4, #0b74ce) 0 10px / 8px 8px no-repeat,
    linear-gradient(135deg, #4cc5f4, #0b74ce) 10px 10px / 8px 8px no-repeat;
  filter: drop-shadow(0 1px 3px rgba(0, 71, 148, 0.36));
  transition: transform var(--duration-medium) var(--ease-emphasized);
}

.taskbar-start:hover::before,
.taskbar-start:hover .start-glyph,
.taskbar-start.is-open::before,
.taskbar-start.is-open .start-glyph {
  transform: scale(1.07);
}

.taskbar-start:has(.start-glyph)::before {
  display: none;
}

.taskbar-pinned,
.taskbar-running {
  display: flex;
  align-items: center;
  gap: 2px;
  min-width: 0;
}

.taskbar-divider {
  width: 1px;
  height: 22px;
  margin: 0 4px;
  background: var(--border-default);
}

.taskbar-app::after {
  content: "";
  position: absolute;
  inset: auto 13px 2px;
  height: 3px;
  border-radius: var(--radius-round);
  background: transparent;
  transform: scaleX(0.4);
  transition:
    inset var(--duration-medium) var(--ease-standard),
    background-color var(--duration-fast) ease,
    transform var(--duration-medium) var(--ease-standard);
}

.taskbar-app.is-running::after,
.taskbar-app[data-running="true"]::after {
  background: var(--text-tertiary);
  transform: scaleX(0.65);
}

.taskbar-app.is-active,
.taskbar-app[aria-pressed="true"] {
  background: var(--surface-layer-hover);
}

.taskbar-app.is-active::after,
.taskbar-app[aria-pressed="true"]::after {
  inset-inline: 10px;
  background: #5fc8ff;
  transform: scaleX(1);
}

.taskbar-app .app-icon,
.taskbar-app__icon {
  --icon-size: 26px;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.16) inset,
    0 2px 6px rgba(0, 0, 0, 0.25);
  transition: transform var(--duration-fast) ease;
}

.taskbar-app:hover .app-icon,
.taskbar-app:hover .taskbar-app__icon {
  transform: translateY(-1px);
}

.taskbar-app .app-icon__mark {
  font-size: 12px;
}

.taskbar-app__badge {
  position: absolute;
  inset: 2px 2px auto auto;
  display: grid;
  place-items: center;
  min-width: 14px;
  height: 14px;
  padding: 0 3px;
  border: 1px solid var(--surface-taskbar);
  border-radius: var(--radius-round);
  color: #fff;
  background: var(--danger);
  font-size: 9px;
  line-height: 1;
}

.taskbar-spacer {
  grid-column: 1;
}

.system-tray {
  grid-column: 3;
  justify-self: end;
  display: flex;
  align-items: center;
  min-width: 0;
  height: 40px;
  gap: 1px;
}

.tray-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 36px;
  padding: 0 5px;
  border-radius: var(--radius-control);
  color: var(--text-primary);
  background: transparent;
  transition: background-color var(--duration-fast) ease;
}

.tray-button:hover,
.tray-button.is-open {
  background: var(--surface-layer-hover);
}

.tray-button:active {
  background: var(--surface-layer-pressed);
}

.tray-cluster {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 36px;
  padding-inline: 7px;
  border-radius: var(--radius-control);
}

.tray-cluster:hover {
  background: var(--surface-layer-hover);
}

.tray-button--settings {
  gap: 7px;
  min-width: 0;
  padding: 0 8px;
}

.tray-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  color: currentColor;
  opacity: 0.92;
}

.tray-icon svg,
.tray-icon i {
  display: block;
  width: 16px;
  height: 16px;
  overflow: visible;
}

.tray-icon i {
  width: auto;
  height: auto;
}

.tray-icon--wifi svg,
.tray-icon--volume svg,
.tray-icon--battery svg {
  shape-rendering: geometricPrecision;
}

.tray-icon--battery {
  width: 17px;
  flex-basis: 17px;
}

.taskbar-clock {
  display: grid;
  align-content: center;
  justify-items: end;
  min-width: 72px;
  height: 36px;
  padding: 1px 7px;
  border-radius: var(--radius-control);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
  white-space: nowrap;
}

.taskbar-clock:hover {
  background: var(--surface-layer-hover);
}

.taskbar-clock__time,
.taskbar-clock__date {
  display: block;
}

.show-desktop {
  align-self: stretch;
  width: 6px;
  margin: -4px -8px calc(var(--taskbar-safe-area) * -1) 3px;
  border-left: 1px solid var(--border-subtle);
  background: transparent;
}

.show-desktop:hover {
  background: var(--surface-layer-hover);
}

.taskbar-tooltip,
[data-tooltip]::before {
  position: absolute;
  z-index: var(--z-tooltip);
  inset: auto auto calc(100% + 9px) 50%;
  max-width: 240px;
  padding: 5px 9px;
  overflow: hidden;
  border: 1px solid var(--border-window);
  border-radius: var(--radius-control);
  color: var(--text-primary);
  background: var(--surface-menu);
  box-shadow: var(--shadow-flyout);
  font-size: var(--font-size-caption);
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 3px);
  transition:
    opacity var(--duration-fast) ease 420ms,
    transform var(--duration-fast) ease 420ms;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
}

[data-tooltip]:hover::before,
[data-tooltip]:focus-visible::before,
.taskbar-app:hover .taskbar-tooltip,
.taskbar-app:focus-visible .taskbar-tooltip {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 760px) {
  .taskbar {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .taskbar-main,
  .taskbar-center,
  .taskbar-apps {
    grid-column: 1;
    justify-self: start;
    max-width: calc(100vw - 132px);
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
  }

  .taskbar-main::-webkit-scrollbar,
  .taskbar-center::-webkit-scrollbar,
  .taskbar-apps::-webkit-scrollbar {
    display: none;
  }

  .system-tray {
    grid-column: 2;
  }

  .tray-cluster,
  .taskbar-clock__date {
    display: none;
  }

  .taskbar-clock {
    min-width: 54px;
  }
}

@media (max-width: 460px) {
  .taskbar {
    padding-inline: 4px;
  }

  .taskbar-main,
  .taskbar-center,
  .taskbar-apps {
    max-width: calc(100vw - 66px);
  }

  .system-tray {
    gap: 0;
  }

  .system-tray > :not(.taskbar-clock):not(.show-desktop) {
    display: none;
  }
}

@media (forced-colors: active) {
  .taskbar {
    border-top: 1px solid CanvasText;
    background: Canvas;
    box-shadow: none;
  }

  .taskbar-start::before,
  .start-glyph {
    background:
      linear-gradient(CanvasText, CanvasText) 0 0 / 8px 8px no-repeat,
      linear-gradient(CanvasText, CanvasText) 10px 0 / 8px 8px no-repeat,
      linear-gradient(CanvasText, CanvasText) 0 10px / 8px 8px no-repeat,
      linear-gradient(CanvasText, CanvasText) 10px 10px / 8px 8px no-repeat;
    filter: none;
  }

  .taskbar-app.is-active::after,
  .taskbar-app.is-running::after {
    background: Highlight;
  }
}