/* @bchen/ui — sidebar layout
 * Uses only tokens defined in dist/tokens.css.
 * Companion to dist/tokens.css and dist/base.css. */

/* ── Desktop: two-column grid ─────────────────────────────────────────── */
@media (min-width: 768px) {
  body {
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: 1fr;
  }

  .mobile-header { display: none; }

  .sidebar {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: sticky;
    top: 0;
    border-right: var(--border);
    background: var(--bg);
    padding: 1rem 0;
    overflow-y: auto;
  }

  .app-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
}

/* ── Mobile: sidebar hidden, top bar shown ─────────────────────────────── */
@media (max-width: 767px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .app-body {
    display: flex;
    flex-direction: column;
    flex: 1;
  }
}

/* ── Sidebar components ────────────────────────────────────────────────── */
.sidebar-brand {
  padding: 0 1rem 1rem;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.sidebar-brand a {
  text-decoration: none;
  color: var(--fg);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.125rem;
  padding: 0 0.5rem;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.1s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--bg-elevated);
  outline: none;
}

.nav-link.nav-active {
  font-weight: 600;
  background: var(--bg-elevated);
  color: var(--fg);
}

.sidebar-footer {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.sidebar-user {
  font-size: 11px;
  color: var(--fg-muted);
}