/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  overflow-x: hidden;
}

/* ===== HERO FADE-IN ANIMATIONS ===== */
.fade-in {
  opacity: 1;
  animation: heroFadeIn 0.8s ease-out forwards;
}

.fade-in:nth-child(2) {
  animation-delay: 0.15s;
}

.fade-in:nth-child(3) {
  animation-delay: 0.3s;
}

.fade-in:nth-child(4) {
  animation-delay: 0.45s;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
.reveal {
  opacity: 1;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  transform: translateY(0);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion: skip animations entirely */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .fade-in {
    animation: none;
    opacity: 1;
  }
  html {
    scroll-behavior: auto;
  }
}

/* Default hidden state for scroll-reveal — JS will add .revealed */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== NAVBAR SCROLL STATE ===== */
#navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(95, 29, 130, 0.08);
}

/* ===== MOBILE MENU ===== */
#mobile-menu {
  animation: slideDown 0.25s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #fdf2ff;
}
::-webkit-scrollbar-thumb {
  background: #a825e0;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #8a1bbf;
}