/* ── Navigation ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 5%;
  background: rgba(30, 58, 95, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

nav img.logo { height: 54px; }

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--gray-light);
  text-decoration: none;
  font-size: 15px;
  font-weight: 400;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--teal); }

.nav-cta {
  background: var(--teal);
  color: var(--white) !important;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600 !important;
  font-size: 0.875rem;
  padding: 0.6rem 1.4rem;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.nav-cta:hover { background: var(--teal-dark); transform: translateY(-1px); }

/* ── Hamburger: hidden on desktop ── */
.nav-toggle {
  display: none;
}

.nav-hamburger {
  display: none;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  position: relative;
  z-index: 2;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--gray-light);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

/* ── Mobile: 768px breakpoint ── */
@media (max-width: 768px) {

  .nav-hamburger {
    display: flex;
  }

  /* Hide links by default on mobile */
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 2rem 0;
  }

  .nav-links a {
    font-size: 1.25rem;
    padding: 0.75rem 0;
    display: block;
  }

  .nav-cta {
    margin-top: 1rem;
    font-size: 1rem;
    padding: 0.75rem 2rem;
  }

  /* When open: expand nav to full screen, show links */
  nav:has(.nav-toggle:checked) {
    bottom: 0;
    flex-wrap: wrap;
    align-content: start;
    background: rgba(30, 58, 95, 0.97);
  }

  .nav-toggle:checked ~ .nav-links {
    display: flex;
    flex-basis: 100%;
    min-height: calc(100vh - 90px);
  }

  /* Hamburger -> X animation */
  .nav-toggle:checked ~ .nav-hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle:checked ~ .nav-hamburger span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked ~ .nav-hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* ── Small mobile fine-tuning ── */
@media (max-width: 480px) {
  nav { padding: 0.75rem 5%; }
  nav img.logo { height: 42px; }
}