/* ── Base ── */
html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
  }
}

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

/* stagger children */
.reveal[data-reveal-delay="1"] { transition-delay: 0.1s; }
.reveal[data-reveal-delay="2"] { transition-delay: 0.2s; }
.reveal[data-reveal-delay="3"] { transition-delay: 0.3s; }
.reveal[data-reveal-delay="4"] { transition-delay: 0.4s; }
.reveal[data-reveal-delay="5"] { transition-delay: 0.5s; }
.reveal[data-reveal-delay="6"] { transition-delay: 0.6s; }

/* ── Card Hover ── */
.card-hover {
  transform: translateY(0);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-6px);
}

/* ── Floating Animation ── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ── Navbar scroll state ── */
#site-header.scrolled {
  background: rgba(254, 252, 248, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(27, 67, 50, 0.08);
}

/* ── Mobile Nav ── */
#mobile-nav.open {
  display: flex;
}

#mobile-nav.hidden {
  display: none;
}

/* ── Nav link underline ── */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.25s ease;
  opacity: 0.4;
}

.nav-link:hover::after {
  width: 100%;
  opacity: 1;
}

/* ── Mobile link ── */
.mobile-link {
  display: block;
}

/* ── Selection ── */
::selection {
  background: #b8d7be;
  color: #1B4332;
}

/* ── Focus visible ── */
:focus-visible {
  outline: 2px solid #1B4332;
  outline-offset: 2px;
  border-radius: 4px;
}