/* ── Base ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; -webkit-font-smoothing: antialiased; }

/* ── Reveal animations (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  }
  [data-reveal].reveal-visible {
    opacity: 1;
    transform: translateY(0);
  }
}
/* Fallback: if JS is disabled or prefers-reduced-motion, content is visible */
@media not all and (prefers-reduced-motion: no-preference) {
  [data-reveal] { opacity: 1; transform: none; }
}
html.no-js [data-reveal], body:not([data-js]) [data-reveal] { opacity: 1; transform: none; }

/* ── Navbar ── */
#nav.scrolled {
  background: rgba(4, 12, 20, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #6bb889;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* ── Mobile menu ── */
#mobile-menu.open {
  transform: translateX(0);
}
#mobile-menu .menu-line:nth-child(1) {
  transform: rotate(45deg) translate(3px, 3px);
}
#mobile-menu .menu-line:nth-child(2) {
  opacity: 0;
}
#mobile-menu .menu-line:nth-child(3) {
  transform: rotate(-45deg) translate(3px, -3px);
  width: 1.25rem;
}
#mobile-menu.open .menu-line:nth-child(1),
#mobile-menu.open .menu-line:nth-child(3) {
  width: 1.25rem;
}

/* ── Selection ── */
::selection {
  background: rgba(107, 184, 137, 0.3);
  color: #f0f4f8;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #040c14; }
::-webkit-scrollbar-thumb { background: rgba(107, 184, 137, 0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(107, 184, 137, 0.5); }

/* ── Form inputs ── */
select option {
  background: #0B1D3A;
  color: #d5e0ec;
}

/* ── Floating card hover ── */
.absolute.-bottom-6.-left-6,
.absolute.-top-4.-right-4 {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.absolute.-bottom-6.-left-6:hover {
  transform: translateY(-4px);
}
.absolute.-top-4.-right-4:hover {
  transform: translateY(-4px);
}

/* ── Smooth image loading ── */
img {
  image-rendering: auto;
}