.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, 68rem);
}

/* Language switch (segmented, neo-brutalist) */
.locale-switch {
  display: inline-flex;
  border: 2px solid var(--rk-ink);
}

.locale-switch__form {
  margin: 0;
  display: inline-flex;
}

.locale-switch__form + .locale-switch__form {
  border-inline-start: 2px solid var(--rk-ink);
}

.locale-switch__btn {
  appearance: none;
  cursor: pointer;
  border: 0;
  background: var(--rk-surface);
  color: var(--color-text-subtle);
  font-family: var(--rk-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 5px 9px;
  line-height: 1;
}

.locale-switch__btn:hover {
  background: var(--rk-pink-soft);
  color: var(--rk-ink);
}

.locale-switch__btn.is-active {
  background: var(--rk-pink);
  color: #fff;
}

#header {
  align-items: center;
  background-color: var(--color-bg);
  border-block-end: var(--rk-line);
  block-size: var(--size-16);
  display: flex;
  grid-area: header;
  padding-inline: var(--size-6);
  position: sticky;
  top: 0;
  z-index: 50;
}

/* Desktop nav links */
.nav-link {
  color: var(--color-text-subtle);
  font-family: var(--rk-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  text-decoration: none;
  padding: 6px 12px;
  border: 2px solid transparent;
  border-radius: 0;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
  letter-spacing: 0.02em;
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--rk-pink-soft);
}

.nav-link--active {
  color: var(--rk-ink);
  font-weight: 700;
  background-color: var(--rk-pink-soft);
  border-color: var(--rk-ink);
}

/* Mobile header */
@media (max-width: 48rem) {
  #header nav {
    display: none;
  }

  #header .user-email {
    display: none;
  }

  #header {
    padding-inline: var(--size-4);
  }
}

/* Bottom navigation for mobile */
#bottom-nav {
  display: none;
}

@media (max-width: 48rem) {
  #bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-top: var(--rk-line);
    padding: var(--size-2) var(--size-4);
    padding-bottom: calc(var(--size-2) + env(safe-area-inset-bottom));
    justify-content: space-around;
    z-index: 100;
  }

  #bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--color-text-subtle);
    font-family: var(--rk-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: var(--size-1) var(--size-2);
    border-radius: 0;
    transition: color 0.15s ease;
    gap: 2px;
  }

  #bottom-nav a.active {
    color: var(--rk-pink);
  }

  #bottom-nav a:hover {
    color: var(--color-text);
  }

  #bottom-nav svg {
    width: 22px;
    height: 22px;
  }

  #main {
    padding-bottom: calc(var(--size-20) + env(safe-area-inset-bottom));
  }
}

#sidebar {
  background-color: var(--color-bg-subtle);
  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);
}

#main {
  display: flex;
  flex-direction: column;
  gap: var(--size-4);
  grid-area: main;
  overflow: auto;
  padding: var(--size-6);
}

@media (max-width: 48rem) {
  #main {
    padding: var(--size-4);
  }
}