.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-block: var(--rh-header-height) 0;
  background: var(--rh-canvas);
}

.app-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: var(--rh-space-2);
  min-height: var(--rh-header-height);
  padding-inline: max(var(--rh-space-4), calc((100vw - var(--rh-page-max)) / 2 + 8px));
  border-bottom: 1px solid var(--rh-divider);
  background: color-mix(in srgb, var(--rh-bg-elevated) 96%, transparent);
}

.brand,
.primary-nav,
.header-controls,
.language-switcher,
.landing-hero__actions,
.auth-modal__actions {
  display: flex;
  align-items: center;
}

.brand {
  width: max-content;
  justify-self: start;
  gap: var(--rh-space-2);
  min-width: 0;
  color: var(--rh-text-strong);
  font-weight: 700;
}

.brand__mark {
  color: var(--rh-accent);
}

.primary-nav {
  justify-self: center;
  justify-content: center;
  gap: var(--rh-space-2);
  min-width: 0;
  padding-inline: 0;
}

.header-controls {
  justify-self: end;
  justify-content: flex-start;
  gap: var(--rh-space-2);
  min-width: 0;
}

.page-shell {
  flex: 1 1 auto;
  width: min(calc(100% - (var(--rh-workarea-gutter) * 2)), var(--rh-page-max));
  min-height: 0;
  margin-inline: auto;
  padding: var(--rh-space-5);
}

.page-shell:has(.landing-page),
.page-shell:has(.dashboard-workstation),
.page-shell:has(.settings-workstation),
.page-shell:has(.workspace-placeholder) {
  min-height: var(--rh-workarea-height);
  padding: var(--rh-workarea-gutter) 0 0;
}

.page-shell:not(:has(.landing-page)) {
  animation: rh-page-enter var(--rh-page-transition-duration) var(--rh-page-transition-easing) both;
  view-transition-name: rh-page-shell;
}

.app-header,
.app-bottom-status {
  view-transition-name: none;
}

@keyframes rh-page-enter {
  from {
    opacity: 0;
    transform: translate3d(
      var(--rh-page-transition-inline-shift),
      var(--rh-page-transition-distance),
      0
    );
  }

  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes rh-page-exit {
  from {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }

  to {
    opacity: 0;
    transform: translate3d(
      calc(var(--rh-page-transition-inline-shift) * -1),
      calc(var(--rh-page-transition-distance) * -1),
      0
    );
  }
}

@supports (view-transition-name: none) {
  @view-transition {
    navigation: auto;
  }

  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
    mix-blend-mode: normal;
  }

  ::view-transition-old(rh-page-shell) {
    animation: rh-page-exit var(--rh-page-transition-duration) var(--rh-page-transition-easing) both;
  }

  ::view-transition-new(rh-page-shell) {
    animation: rh-page-enter var(--rh-page-transition-duration) var(--rh-page-transition-easing) both;
  }
}

.shell-status-panel {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--rh-space-2);
  min-height: var(--rh-footer-height);
  overflow: hidden;
  padding: 3px 8px;
  border: 1px solid var(--rh-workstation-panel-border);
  background: var(--rh-workstation-panel-bg);
  color: var(--rh-muted);
  font-size: 11px;
  line-height: 1.1;
}

.shell-status-panel > span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shell-status-panel > span + span::before {
  margin-right: var(--rh-space-2);
  color: var(--rh-accent);
  content: "|";
}

.shell-status-panel strong {
  color: var(--rh-text-strong);
  font-weight: 500;
}

.app-bottom-status {
  flex: 0 0 auto;
  width: min(calc(100% - (var(--rh-workarea-gutter) * 2)), var(--rh-page-max));
  min-height: var(--rh-footer-height);
  margin: 0 auto 8px;
}

@media (max-width: 1180px) {
  :root,
  :root[data-theme="terminal-orange"] {
    --rh-workarea-height: calc(
      100vh - var(--rh-header-tablet-height) - var(--rh-footer-height) - (var(--rh-workarea-gutter) * 2 + 4px)
    );
  }

  .app-header {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "brand controls"
      "nav nav";
    gap: var(--rh-space-2);
    padding-inline: var(--rh-space-4);
    padding-block: var(--rh-space-2);
    min-height: var(--rh-header-tablet-height);
  }

  .brand {
    grid-area: brand;
  }

  .primary-nav {
    grid-area: nav;
    width: 100%;
  }

  .header-controls {
    grid-area: controls;
  }

  .app-shell {
    padding-block-start: var(--rh-header-tablet-height);
  }

  .primary-nav,
  .header-controls {
    justify-content: flex-end;
    overflow-x: auto;
    padding-inline: 0;
  }

  .primary-nav {
    justify-content: center;
  }

  .page-shell {
    width: min(calc(100% - (var(--rh-workarea-gutter) * 2)), var(--rh-page-max));
    padding: var(--rh-space-3) 0;
  }

  .app-bottom-status {
    width: calc(100% - (var(--rh-workarea-gutter) * 2));
    margin-inline: var(--rh-workarea-gutter);
  }

  h1 {
    font-size: 32px;
  }
}

@supports (height: 100dvh) {
  @media (min-width: 641px) and (max-width: 1180px) {
    :root,
    :root[data-theme="terminal-orange"] {
      --rh-workarea-height: calc(
        100dvh - var(--rh-header-tablet-height) - var(--rh-footer-height) - (var(--rh-workarea-gutter) * 2 + 4px)
      );
    }
  }
}

@media (max-width: 640px) {
  :root,
  :root[data-theme="terminal-orange"] {
    --rh-workarea-height: auto;
  }

  .app-header {
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "nav"
      "controls";
    align-content: start;
    gap: 6px;
    min-height: var(--rh-header-mobile-height);
    padding-inline: 8px;
    padding-block: 8px;
  }

  .app-shell {
    padding-block-start: var(--rh-header-mobile-height);
  }

  .brand,
  .primary-nav,
  .header-controls {
    justify-self: stretch;
  }

  .brand {
    justify-content: flex-start;
  }

  .primary-nav,
  .header-controls {
    justify-content: stretch;
    width: 100%;
    overflow: visible;
  }

  .primary-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .header-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-shell:has(.landing-page),
  .page-shell:has(.dashboard-workstation),
  .page-shell:has(.settings-workstation),
  .page-shell:has(.workspace-placeholder) {
    min-height: 0;
    padding-block-start: var(--rh-workarea-gutter);
  }

  .shell-status-panel {
    flex-wrap: wrap;
    min-height: auto;
  }

  .shell-status-panel > span {
    max-width: 100%;
  }

  .shell-status-panel > span + span::before {
    margin-right: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-shell:not(:has(.landing-page)),
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-old(rh-page-shell),
  ::view-transition-new(rh-page-shell) {
    animation: none;
  }
}