header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background-color: var(--bg);
  border-bottom: 1px solid rgba(126, 183, 127, 0.2);
}

.header-inner {
  margin: 0 auto;
  max-width: 1600px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  height: 70px;
  padding: 0 25px;
}

.header-logo {
  font-family: 'Fira Code', monospace;
  font-size: 1.2em;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white);
}
.header-logo:hover { color: var(--pink); }

/* ─── Nav ───────────────────────────────────────────────────────────────────── */
.nav { display: flex; align-items: center; }

.nav-menu {
  position: absolute;
  top: 70px;
  left: 0;
  width: 100%;
  display: none;
  flex-direction: column;
  background-color: var(--bg);
  border-bottom: 1px solid rgba(126, 183, 127, 0.3);
  z-index: 99;
}

.nav-menu.active { display: flex; }

.nav-item a {
  display: block;
  padding: 16px 25px;
  font-family: 'Fira Code', monospace;
  font-weight: 700;
  font-size: 0.95em;
  letter-spacing: 0.1em;
  color: var(--white);
  transition: color 0.2s ease;
}
.nav-item a:hover,
.nav-item a.current { color: var(--pink); }

/* ─── Hamburger ──────────────────────────────────────────────────────────────── */
.toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--white);
}
.toggle i { font-size: 1.6em; }

/* ─── Desktop nav ────────────────────────────────────────────────────────────── */
@media only screen and (min-width: 768px) {
  .toggle { display: none; }

  .nav-menu {
    position: static;
    display: flex;
    flex-direction: row;
    background: none;
    border: none;
    width: auto;
  }

  .nav-item a {
    padding: 8px 16px;
    width: auto;
  }
}