@charset "utf-8";

/* スマホナビゲーション */
#nav_sp {
  display: block;
}

#head_nav {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 260px;
  height: 100vh;
  background: #fff;
  box-shadow: -4px 0 16px rgba(0,0,0,0.15);
  padding: 2rem 1rem;
  overflow-y: auto;
  z-index: 300;
}

body.nav-visible #head_nav {
  display: block;
}

body.nav-visible::before {
  content: "";
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 299;
}

.nav-button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-color);
}

.lines {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-color);
}

.btn_text {
  font-size: 0.7rem;
  font-weight: 700;
}