/* style.css */
html { 
  scroll-behavior: smooth; 
  scroll-padding-top: 5rem;
}

.material-symbols-outlined { 
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24; 
}

.bg-glass { 
  background: rgba(255, 255, 255, 0.95); 
  backdrop-filter: blur(8px); 
}

.serif-heading { 
  font-family: 'Libre Baskerville', serif; 
}

.sans-body { 
  font-family: 'Fira Sans', sans-serif; 
}

/* Animations */
.fade-in-section {
  opacity: 0;
  transform: translateY(20px) scale(0.98);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  will-change: opacity, transform;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
}

.fade-in-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-stagger.is-visible > * {
  opacity: 1;
  transform: none;
}
.fade-in-stagger.is-visible > *:nth-child(1) { transition-delay: 0.1s; }
.fade-in-stagger.is-visible > *:nth-child(2) { transition-delay: 0.2s; }
.fade-in-stagger.is-visible > *:nth-child(3) { transition-delay: 0.3s; }
.fade-in-stagger.is-visible > *:nth-child(4) { transition-delay: 0.4s; }

/* Sticky menu transition */
#main-nav {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
#main-nav.scrolled {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  background-color: rgba(255, 255, 255, 0.98);
}