/* ── Base & Typography ── */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background-color: rgba(26, 95, 122, 0.2);
  color: #1a5f7a;
}

/* ── 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:not(.is-visible) {
  opacity: 1;
  transform: translateY(20px);
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Navigation ── */
.nav {
  background: rgba(245, 240, 235, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(26, 95, 122, 0.08);
}

.nav.scrolled {
  background: rgba(245, 240, 235, 0.97);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-links {
  opacity: 1;
  transition: opacity 0.3s ease;
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #1a5f7a;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link:focus::after {
  width: 100%;
}

/* Mobile menu */
.mobile-link {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu.closed {
  opacity: 0;
  pointer-events: none;
}

/* Nav toggle animation */
.nav-toggle.active .nav-line:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle.active .nav-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.active .nav-line:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
  width: 1.5rem;
}

/* ── Service Cards ── */
.service-card {
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

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

/* ── Buttons ── */
a, button {
  -webkit-tap-highlight-color: transparent;
}

/* ── Focus Styles ── */
:focus-visible {
  outline: 2px solid #1a5f7a;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Smooth scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f5f0eb;
}

::-webkit-scrollbar-thumb {
  background: #b8a896;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #7a6652;
}

/* ── Utility ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}