*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }

::selection { background: rgba(249, 112, 102, 0.2); color: #1e1e1e; }

/* HERO ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* NAV SCROLLED STATE */
#site-header.scrolled {
  background: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

#site-header.scrolled .nav-link { color: rgba(255,255,255,0.75); }
#site-header.scrolled .nav-link:hover { color: #fff; }

/* SCROLL REVEAL (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* FAQ */
.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1), padding 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.faq-content.open {
  max-height: 200px;
}

/* SCROLL INDICATOR PULSE */
@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.2); }
}

/* FOCUS STYLES */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid #F97066;
  outline-offset: 2px;
  border-radius: 4px;
}

/* MOBILE MENU TRANSITIONS */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

/* SMOOTH IMAGE LOADING */
img {
  image-rendering: -webkit-optimize-contrast;
}

/* CUSTOM SCROLLBAR */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f7f7f7; }
::-webkit-scrollbar-thumb { background: #d4d4d4; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a3a3a3; }

@media (prefers-color-scheme: dark) {
  ::-webkit-scrollbar-track { background: #1e1e1e; }
  ::-webkit-scrollbar-thumb { background: #404040; }
}