/* ════════════════════════════
   HEADER
════════════════════════════ */
.ref-header {
  width: 100%;
  background: var(--surface-light);
  padding: 1rem 2rem;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  border-bottom: 1px solid #f3f4f6;
}
.ref-header-inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 2.9rem;
}
.ref-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  text-decoration: none;
}
.ref-brand:hover { opacity: 0.85; text-decoration: none; color: var(--primary); }
.ref-brand .material-icons {
  font-size: 1.5rem;
  line-height: 1;
}
.ref-brand-name {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.75rem;
  letter-spacing: 0.025em;
}