/* ── Base & Typography ── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: #047857;
  color: #fff;
}

/* ── Navbar scroll state ── */
#site-header.scrolled {
  background-color: rgba(254, 253, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(4, 120, 87, 0.1);
}

#site-header.scrolled .font-display {
  color: #064e3b;
}

#site-header.scrolled a:not([class*="bg-emerald"]) {
  color: #064e3b;
}

/* ── Service Cards ── */
.service-card {
  transform: translateY(0);
}

.service-card:hover {
  transform: translateY(-4px);
}

/* ── Mobile Menu ── */
#mobile-menu.open {
  display: block;
  animation: slideDown 0.2s ease-out;
}

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

/* ── Mobile menu button animation ── */
#menu-btn[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

#menu-btn[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
}

#menu-btn[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
  width: 1.5rem;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  }

  .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; }
}

/* ── Focus styles ── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid #059669;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Smooth image loading ── */
img {
  loading: lazy;
}