/* ─── Base & Reset ─── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f5f3ee; }
::-webkit-scrollbar-thumb { background: #4a7a56; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a6044; }

/* ─── Scroll Reveal (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
}

/* ─── Hero animations (above fold — visible by default) ─── */
.hero-headline {
  opacity: 1;
  transform: none;
}
.hero-subtitle {
  opacity: 1;
  transform: none;
}
.hero-desc {
  opacity: 1;
  transform: none;
}
.hero-cta {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-headline {
    animation: heroSlideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
  }
  .hero-subtitle {
    animation: heroSlideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
  }
  .hero-desc {
    animation: heroSlideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
  }
  .hero-cta {
    animation: heroSlideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.45s both;
  }
}

@keyframes heroSlideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Navbar ─── */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
#navbar.scrolled {
  background: rgba(250, 249, 246, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(26, 74, 53, 0.08);
}

/* ─── Mobile Menu ─── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

/* ─── Program Cards ─── */
.program-card {
  will-change: transform;
}

/* ─── Testimonial Cards ─── */
.testimonial-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.testimonial-card:hover {
  transform: translateY(-4px);
}

/* ─── CTA Content ─── */
.cta-content {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: no-preference) {
  .cta-content {
    animation: heroSlideUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) both;
  }
}

/* ─── Utility ─── */
::selection {
  background: #4a7a56;
  color: #faf9f6;
}