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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Hero entry */
.hero-inner > * {
  animation: fadeInUp 0.65s ease both;
}
.hero-inner > *:nth-child(2) {
  animation-delay: 0.15s;
}

/* Scroll-reveal: sections that observe */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  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; }

/* Back to top button */
#back-to-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--green);
  color: white;
  border: none;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.2s;
}
#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
#back-to-top:hover { transform: translateY(-3px); background: var(--navy); }