.header {
  position: fixed;
  top: 0;
  z-index: 50;
  width: 100%;
  background-color: transparent;
}

.progress-container {
  width: 100%;
  height: 4px;
  background: transparent;
}

.progress-bar {
  height: 4px;
  background: #2563eb;
  width: 0%;.progress-bar {
  height: 3px;
  border-radius: 9999px;
}
}
.progress-bar {
  height: 3px;
  border-radius: 9999px;
}

.nav-link {
  color: #64748b; /* slate-500 */
  font-weight: 600;
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: #2563eb;
}

.nav-link.active {
  color: #2563eb; /* primary blue */
}
html {
  scroll-behavior: smooth;
}

/* HERO SLIDE DOWN ANIMATION */
.hero-animate > * {
  opacity: 0;
  transform: translateY(-40px);
  animation: heroSlideDown 0.8s ease-out forwards;
}

.hero-animate > *:nth-child(1) { animation-delay: 0.1s; }
.hero-animate > *:nth-child(2) { animation-delay: 0.3s; }
.hero-animate > *:nth-child(3) { animation-delay: 0.5s; }
.hero-animate > *:nth-child(4) { animation-delay: 0.7s; }

@keyframes heroSlideDown {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease-out;
}

.fade-up.show {
  opacity: 1;
  transform: translateY(0);
}

.about-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 25px 60px rgba(0,0,0,0.08);
}