.sidebar-layout {
  display: grid;
  grid-template-areas: "header header" "sidebar main";
  grid-template-columns: var(--sidebar-width, 0) 1fr;
  grid-template-rows: auto 1fr;
  block-size: 100dvh;

  @media (width >= 48rem) {
    --sidebar-border-width: var(--border);
    --sidebar-padding: var(--size-2);
    --sidebar-width: var(--max-i-3xs);
  }
}

.header-layout {
  display: grid;
  grid-template-areas: "header" "main";
  grid-template-rows: auto 1fr;
  block-size: 100dvh;
}

.centered-layout {
  display: grid;
  place-items: center;
  block-size: 100dvh;
}

.container {
  inline-size: 100%;
  margin-inline: auto;
  max-inline-size: var(--container-width, 64rem);
}

#header {
  align-items: center;
  background-color: rgb(from var(--color-border-light) r g b / .5);
  border-block-end-width: var(--border);
  block-size: var(--size-16);
  column-gap: var(--size-4);
  display: flex;
  grid-area: header;
  padding-inline: var(--size-4);
  view-transition-name: header;
}

#sidebar {
  background-color: rgb(from var(--color-border-light) r g b / .5);
  border-inline-end-width: var(--sidebar-border-width, 0);
  display: flex;
  flex-direction: column;
  grid-area: sidebar;
  overflow-x: hidden;
  padding: var(--sidebar-padding, 0);
  row-gap: var(--size-2);
  view-transition-name: sidebar;
}

#main {
  display: flex;
  flex-direction: column;
  gap: var(--size-4);
  grid-area: main;
  overflow: auto;
  padding: var(--size-4);
}