/* Hamburger button */
.nav__toggle {
  display: none;
  width: var(--icon-btn);
  height: var(--icon-btn);
  border-radius: var(--radius-md);
  background: var(--color-bg);

  align-items: center;
  justify-content: center;
}

/* 3 equal lines */
.nav__toggle-lines {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  transition: background var(--transition-fast);
}

.nav__toggle-lines::before,
.nav__toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.8);
  transition: transform var(--transition-fast), top var(--transition-fast);
}

.nav__toggle-lines::before {
  top: -6px;
}

.nav__toggle-lines::after {
  top: 6px;
}

/* OPEN → X */
.nav.is-open .nav__toggle-lines {
  background: transparent;
}

.nav.is-open .nav__toggle-lines::before {
  top: 0;
  transform: rotate(45deg);
}

.nav.is-open .nav__toggle-lines::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Show only in mobile */
@media (max-width: 1120px) {
  .nav__toggle {
    display: inline-flex;
    width: var(--icon-btn-mobile);
    height: var(--icon-btn-mobile);
  }
}