/* ── Existing spark animation (unchanged) ─────────────────────────────── */
.spark {
  width: 5px;
  height: 5px;
  position: absolute;
  background: var(--primary);
  border-radius: 50%;
  animation: fade 0.5s linear;
}

@keyframes fade {
  from { opacity: 1; }
  to   { opacity: 0; transform: scale(3); }
}

/* ── Section entrance animation ───────────────────────────────────────── */
/*    Sections start invisible + shifted down                              */
.section {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

/*    When JS adds .section-visible → fade + slide up into place          */
.section.section-visible {
  opacity: 1;
  transform: translateY(0);
}

/*    Reduced-motion: skip animation entirely                              */
@media (prefers-reduced-motion: reduce) {
  .section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Scroll progress bar ──────────────────────────────────────────────── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--primary);
  z-index: 9999;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* ── Active nav link style ────────────────────────────────────────────── */
.nav-links li.nav-active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 2px;
  font-weight: 600;
}