/* ===== ハンバーガーメニュー / Hamburger Menu ===== */

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--dark);
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ドロワーオーバーレイ */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 198;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* ドロワー本体 */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 260px;
  background: var(--dark);
  z-index: 199;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: 4.5rem 2rem 2rem;
}
.drawer.open {
  transform: translateX(0);
}

.drawer-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
}
.drawer-close:hover { color: #fff; }

.drawer-nav {
  display: flex;
  flex-direction: column;
}
.drawer-nav a {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: color 0.2s;
}
.drawer-nav a:last-child { border-bottom: none; }
.drawer-nav a:hover { color: var(--accent); }

.drawer-nav .btn-join-sm {
  margin-top: 1.5rem;
  display: block;
  text-align: center;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--dark) !important;
  border-bottom: none;
  border-radius: 2px;
}
.drawer-nav .btn-join-sm:hover {
  background: var(--brown);
  color: #fff !important;
}

.drawer-nav .lang-switch {
  margin-top: 0.5rem;
  width: 100%;
  text-align: center;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 2px;
  color: rgba(255, 255, 255, 0.5) !important;
}
.drawer-nav .lang-switch:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

/* ===== 無料サンプル誘導ブロック ===== */
.gallery-free {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--sand, #e8e0d4);
}
.gallery-free p {
  font-size: 0.78rem;
  color: var(--taupe);
  letter-spacing: 0.05em;
  margin-bottom: 1.2rem;
}
.btn-free-sample {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  border-radius: 2px;
  background: transparent;
  transition: all 0.3s;
}
.btn-free-sample:hover {
  background: var(--accent);
  color: var(--dark);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  /* nav a { display: none } の影響でドロワー内リンクも消えるのを防ぐ */
  .drawer-nav a { display: block; }
}