/* シンプルなナビゲーション */
.simple-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 30px;
  background: #fafafb;
  position: relative;
  height: 80px;
}

.nav-logo img {
  width: 250px;
  min-height: 20px;
  min-width: 140px;
}

.nav-menu {
  display: flex;
  gap: 20px;
}

.nav-menu li {
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  color: black;
  font-weight: bold;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: black;
  border-radius: 10px;
}

/* モバイル対応 */
@media (max-width: 630px) {
  .nav-menu {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgb(240, 237, 240);
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
    z-index: 100;
    text-align: center;
  }
  
  .nav-menu.active {
    max-height: 300px;
  }
  
  .nav-menu li {
    width: 100%;
    padding: 15px 0;
    border-bottom: 1px solid rgba(0,0,0,0.1);
  }
  
  .nav-toggle {
    display: flex;
  }
}