/* ---------- Left sidebar ---------- */
#navbar nav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;

  width: var(--leftbar-w, 16rem);
  padding: 1.75rem 1rem;
  display: flex;
  flex-direction: column;

  background: var(--side);
  border-right: 1px solid var(--rule);
  overflow-y: auto;
}

#navbar .logo {
  margin: 0 0.5rem 1.5rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--rule);

  color: var(--ink);
  font-family: var(--font-text);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

#navbar .logo::after {
  content: ".";
  color: var(--mark);
}

#navbar ul {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

#navbar li { margin: 0; }

#navbar a {
  display: block;
  padding: 0.6rem 0.8rem;
  border-radius: var(--r-sm);

  color: var(--ink-soft);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.5;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: background 0.15s, color 0.15s;
}

#navbar a:hover {
  background: var(--hover);
  color: var(--ink);
}

#navbar a.active,
#navbar a[aria-current="page"] {
  background: var(--mark-soft);
  color: var(--mark);
  font-weight: 600;
}

/* ---------- Mobile: top strip ---------- */
@media (max-width: 860px) {
  #navbar nav {
    position: sticky;
    top: 0;
    inset: auto;
    width: 100%;
    padding: 0.75rem 1rem;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    overflow-x: auto;
    overflow-y: hidden;
  }

  #navbar .logo {
    flex: none;
    margin: 0;
    padding: 0 1rem 0 0;
    border-bottom: 0;
    border-right: 1px solid var(--rule);
    font-size: 1.1rem;
  }

  #navbar ul {
    flex-direction: row;
    gap: 0.25rem;
    overflow-x: auto;
  }

  #navbar li { flex: 0 0 auto; }

  #navbar a {
    padding: 0.45rem 0.7rem;
    white-space: nowrap;
  }
}

@media print { #navbar { display: none; } }