/* ============================================
   ONDA — Navigation
   ============================================ */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--content-pad);
  border-bottom: 1px solid rgba(200, 200, 200, 0.06);
  transition: border-color 300ms ease, box-shadow 300ms ease;
}

.site-nav.scrolled {
  border-bottom-color: rgba(200, 200, 200, 0.12);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5);
}

/* ── Logo ── */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-horizontal {
  height: 28px;
  width: auto;
  display: block;
}

.logo-mark {
  height: 28px;
  width: auto;
  display: none;
}

/* ── Nav Links (desktop) ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--platinum);
  letter-spacing: 0.04em;
  transition: color 200ms ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--orange);
  transition: width 250ms var(--ease);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* ── Hamburger Toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
  cursor: pointer;
  z-index: 200;
  position: relative;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--platinum);
  transition: transform 300ms var(--ease), opacity 300ms ease, width 300ms ease;
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  width: 0;
}

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

/* ── Mobile ── */
@media (max-width: 768px) {
  .logo-horizontal { display: none; }
  .logo-mark       { display: block; }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 0;
    background: var(--black);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity 350ms var(--ease);
    z-index: 150;
  }

  .nav-links.open {
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.02em;
  }

  .nav-links a::after {
    display: none;
  }
}

@media (min-width: 769px) {
  .logo-horizontal { display: block; }
  .logo-mark       { display: none; }
}