nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 22px;
  height: 16px;
  position: relative;
  flex-shrink: 0;
  z-index: 1000;
}

.nav-toggle::before,
.nav-toggle::after {
  content: '';
  position: absolute;
  left: 0;
  height: 1.5px;
  background: var(--black);
  transition: transform 0.2s ease, width 0.2s ease, top 0.2s ease;
}

.nav-toggle::before { top: 3px;  width: 100%; }
.nav-toggle::after  { top: 12px; width: 63%;  }

.nav-toggle.open::before { top: 7.5px; transform: rotate(45deg);  width: 100%; }
.nav-toggle.open::after  { top: 7.5px; transform: rotate(-45deg); width: 100%; }

.nav-current { display: none; }

@media (max-width: 640px) {
  nav { justify-content: flex-start; }

  .nav-current {
    display: block;
    margin-left: auto;
    margin-right: 12px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--black);
  }

  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 42%;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
    padding: 0 var(--margin);
    z-index: 999;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    font-size: 20px !important;
    opacity: 1 !important;
    color: var(--black) !important;
    letter-spacing: -0.01em;
  }

  .nav-toggle.open {
    position: fixed;
    top: 28px;
    right: var(--margin);
    z-index: 1000;
  }
}