/* ═══════════════════════════════════════════════════════════════
   Sidebar Navigation — scroll-spy active state, numbered links
   Uses --brand-* variables from neoswiss-system.css
   ═══════════════════════════════════════════════════════════════ */

/* ── Vertical nav list ─────────────────────────────────────── */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 1.5rem 1rem;
}

/* ── Individual link ───────────────────────────────────────── */
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.85rem;
  border-radius: 10px;
  color: var(--brand-text-soft, #334155);
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 13.5px;
  text-decoration: none;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
  min-height: 44px;
}

.sidebar-link:hover,
.sidebar-link:focus-visible {
  background: rgba(255, 215, 0, 0.08);
  color: var(--brand-gold, #b88700);
  text-decoration: none;
  outline: none;
}

/* ── Active state (scroll-spy) — gold left border inset ───── */
.sidebar-link.is-active {
  background: rgba(255, 215, 0, 0.12);
  color: var(--brand-gold, #b88700);
  box-shadow: inset 3px 0 0 var(--brand-gold, #b88700);
}

/* ── Numbered badge ────────────────────────────────────────── */
.sidebar-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--brand-border, rgba(10,18,42,0.08));
  color: var(--brand-muted, #64748b);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.sidebar-link.is-active .sidebar-number {
  background: var(--brand-gold, #b88700);
  color: var(--brand-dark, #0a122a);
}

/* ── Section label ────────────────────────────────────────── */
.sidebar-label {
  font-size: 13.5px;
  line-height: 1.25;
}

/* ── Optional icon ─────────────────────────────────────────── */
.sidebar-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.6;
}

.sidebar-link.is-active .sidebar-icon {
  opacity: 1;
}

/* ── Sidebar head label ────────────────────────────────────── */
.sidebar__head {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--brand-muted, #64748b);
  margin: 0 0.5rem 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--brand-border, rgba(10,18,42,0.08));
}