/* ── Base & Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background: #2DD4BF;
  color: #070D1A;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #2DD4BF;
  transition: width 0.3s ease;
}

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

/* ── Mobile Menu ── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

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

#menu-btn.active #bar1 {
  transform: rotate(45deg);
  top: 50%;
  margin-top: -0.5px;
}

#menu-btn.active #bar2 {
  opacity: 0;
}

#menu-btn.active #bar3 {
  transform: rotate(-45deg);
  width: 5;
  bottom: 50%;
  margin-bottom: -0.5px;
}

/* ── Header Scroll State ── */
#site-header.scrolled {
  background: rgba(240, 255, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

#site-header.scrolled .nav-link {
  color: #070D1A;
}

/* ── Service Cards ── */
.service-card {
  border-top: 1px solid transparent;
  padding-top: 0;
  transition: border-color 0.4s ease;
}

.service-card:hover {
  border-top-color: #2DD4BF;
  padding-top: 1rem;
}

/* ── Collection Cards ── */
.collection-card {
  display: block;
  text-decoration: none;
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  .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; }
}

/* ── Reduced motion fallback ── */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
  html { scroll-behavior: auto; }
  * { transition-duration: 0s !important; animation-duration: 0s !important; }
}