.hamburger {
  width: 36px;
  height: 36px;
  padding: 6px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.hamburger:hover {
  background: var(--accent-hover);
}

/* Barres */
.hamburger .bar {
  width: 24px;
  height: 3px;
  border-radius: 999px;
  background: white;
  transition:
    transform 0.25s ease,
    opacity 0.2s ease,
    width 0.2s ease;
}

/* ============================
   SIDEBAR FERMÉE → HAMBURGER
============================ */

.hamburger:not(.open) .bar {
  opacity: 1;
  width: 24px;
  transform: none;
}

/* ============================
   SIDEBAR OUVERTE → CROI
============================ */

.hamburger.open .middle {
  opacity: 0;
  width: 0;
}

.hamburger.open .top {
  transform: translateY(9px) rotate(45deg);
}

.hamburger.open .bottom {
  transform: translateY(-9px) rotate(-45deg);
}