/* App shell: sidebar (full, collapsed rail, or off-canvas on narrow screens) and main area. */

.app {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
  min-height: 100dvh;
}

.app.is-collapsed {
  grid-template-columns: var(--sidebar-rail) minmax(0, 1fr);
}

.main,
.content {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: var(--page-pad-y) var(--page-pad-x);
  min-width: 0;
}

.topbar {
  display: none;
}

/* ---------------------------------------------------------------- sidebar */

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--sidebar);
  color: var(--sidebar-ink);
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 24px 16px 16px;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 0 0 8px;
  min-height: 32px;
}

.sidebar__logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-small);
  background: var(--brand);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: #fff;
}

.sidebar__name {
  flex: 1;
  font-weight: 700;
  font-size: 16px;
  white-space: nowrap;
}

.sidebar__group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar__group--projects {
  gap: 2px;
}

.sidebar__heading {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
  padding: 0 8px 6px;
  white-space: nowrap;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 40px;
  padding: 0 10px;
  border-radius: var(--radius-small);
  color: var(--sidebar-ink-2);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.nav-item[aria-current="page"] {
  background: var(--sidebar-active);
  color: #fff;
  font-weight: 600;
}

.nav-item[aria-current="page"] .nav-item__icon {
  color: var(--sidebar-icon-active);
}

.nav-item__icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 18px;
}

.nav-item__label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sidebar-muted);
}

.nav-item[aria-current="page"] .nav-item__count {
  color: var(--sidebar-count-active);
}

.nav-item--project {
  height: auto;
  min-height: 34px;
  font-size: 13px;
}

.nav-item--project[aria-current="true"] {
  color: #fff;
  font-weight: 600;
  background: var(--sidebar-hover);
}

.project-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
  background: var(--project-color);
}

.sidebar .project-dot {
  background: color-mix(in oklab, var(--project-color), white var(--on-dark-mix));
}

.sidebar__footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--sidebar-border);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px;
  min-width: 0;
}

.sidebar__user-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.sidebar__user-name {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-meta {
  font-size: 12px;
  color: var(--sidebar-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__tools {
  display: flex;
  gap: 4px;
  padding: 0 4px;
}

.rail-button {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: var(--radius-small);
  background: transparent;
  color: var(--sidebar-ink-2);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.rail-button:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.sidebar__login {
  flex: 1;
  height: 36px;
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-small);
  background: transparent;
  color: var(--sidebar-ink);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.sidebar__login:hover {
  background: var(--sidebar-hover);
}

/* Collapsed: an icon rail. Labels, counts and headings are hidden; titles give tooltips. */
.is-collapsed .sidebar {
  padding: 24px 10px 16px;
  align-items: center;
}

.is-collapsed .sidebar__brand {
  padding: 0;
  flex-direction: column;
  gap: 16px;
}

.is-collapsed .sidebar__name,
.is-collapsed .nav-item__label,
.is-collapsed .nav-item__count,
.is-collapsed .sidebar__heading,
.is-collapsed .sidebar__user-text,
.is-collapsed .sidebar__login-label {
  display: none;
}

.is-collapsed .nav-item {
  width: 44px;
  justify-content: center;
  padding: 0;
}

.is-collapsed .sidebar__group--projects .nav-item {
  min-height: 28px;
}

.is-collapsed .sidebar__tools {
  flex-direction: column;
  padding: 0;
}

.is-collapsed .sidebar__user {
  padding: 0;
  justify-content: center;
}

.is-collapsed .sidebar__footer {
  align-items: center;
  width: 100%;
}

/* ---------------------------------------------------------------- narrow screens */

@media (max-width: 900px) {
  :root {
    --page-pad-x: 16px;
    --page-pad-y: 20px;
  }

  .app,
  .app.is-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }

  .topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 56px;
    padding: 0 8px;
    background: var(--sidebar);
    color: var(--sidebar-ink);
    position: sticky;
    top: 0;
    z-index: 20;
  }

  .topbar__title {
    font-weight: 700;
  }

  .topbar .icon-btn {
    color: var(--sidebar-ink);
  }

  .topbar .icon-btn:hover {
    background: var(--sidebar-hover);
  }

  .sidebar,
  .is-collapsed .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(280px, 85vw);
    z-index: 40;
    transform: translateX(-100%);
    visibility: hidden; /* closed: out of the tab order and hidden from screen readers */
    transition:
      transform 0.2s ease,
      visibility 0.2s;
    align-items: stretch;
    padding: 24px 16px 16px;
  }

  .nav-open .sidebar {
    transform: none;
    visibility: visible;
    box-shadow: var(--shadow-pop);
  }

  .scrim {
    position: fixed;
    inset: 0;
    z-index: 30;
    background: rgba(0, 0, 0, 0.4);
  }

  /* The rail does not exist on phones: always show the full sidebar content there. */
  .is-collapsed .sidebar__name,
  .is-collapsed .nav-item__label,
  .is-collapsed .nav-item__count,
  .is-collapsed .sidebar__heading,
  .is-collapsed .sidebar__user-text,
  .is-collapsed .sidebar__login-label {
    display: revert;
  }

  .is-collapsed .nav-item {
    width: auto;
    justify-content: flex-start;
    padding: 0 10px;
  }

  .is-collapsed .sidebar__brand {
    flex-direction: row;
    padding: 0 0 0 8px;
  }

  .is-collapsed .sidebar__tools {
    flex-direction: row;
    padding: 0 4px;
  }

  .is-collapsed .sidebar__footer {
    align-items: stretch;
  }

  .is-collapsed .sidebar__user {
    padding: 0 8px;
    justify-content: flex-start;
  }

  .collapse-toggle {
    display: none;
  }
}