/* ── Primary header ──────────────────────────────────────────────────────── */
.primary-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

/* ── Primary navigation ──────────────────────────────────────────────────── */
.primary-navigation {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}
.primary-navigation li a {
  display: block;
  text-decoration: none;
  color: #fff;
  padding: 1em;
  margin-right: 2rem;
  transition: background-color 0.3s ease;
}
.primary-navigation li a:hover,
.primary-navigation li a:focus {
  background-color: grey;
}
.primary-navigation li a.active {
  color: yellow;
}

/* Mobile toggle hidden by default (desktop) */
.mobile-nav-toggle {
  display: none;
}

/* ── Mobile nav (≤ 45em) ─────────────────────────────────────────────────── */
@media (max-width: 45em) {
  .hero-text h1 { font-size: 1.3rem; }
  .hero-text p  { font-size: 1.1rem; }

  .primary-navigation {
    position: fixed;
    inset: 0 0 0 auto;
    height: 50vh;
    width: 100vw;
    flex-direction: column;
    padding: min(40vh, 4rem) 1rem;
    transform: translateX(100%);
    transition: transform 350ms ease-out;
    background-color: hsla(210, 13%, 6%, 100%);
    z-index: 1000;
  }
  .primary-navigation[data-visible="true"] {
    transform: translateX(0%);
  }
  .primary-navigation li a {
    margin-left: 2rem;
  }

  .mobile-nav-toggle {
    display: block;
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 2rem;
    height: 4rem;
    background-image: url(../images/menu-white.png);
    background-repeat: no-repeat;
    background-color: transparent;
    border: none;
    z-index: 9999;
  }
  .mobile-nav-toggle[aria-expanded="true"] {
    background-image: url(../images/close_white.png);
  }
}