/* ------------------------------
  default button 
------------------------------*/
.c-button {
  position: relative;
  width: 200px;
  height: 50px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0 1em;
  border: 1px solid currentColor;
  text-align: center;
  font-family: 'Noto Serif JP', serif;
  font-size: 1.3rem;
  color: currentColor;
  background-color: transparent;
  text-decoration: none;
  box-sizing: border-box;
  transition: .2s cubic-bezier(0.45, 0, 0.55, 1);
  white-space: normal;
  word-break: break-word;
}

.c-button::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -15px;
  /* ボタンの外に突き出す形 */
  width: 30px;
  height: 1px;
  background-color: #fff;
  transform: translateY(-50%);
}

.c-button:hover {
  background-color: #dbdbdb9f;
  color: #000;
}

/*------------------------------
  black button
------------------------------*/
.c-button--black {
  border: none;
  color: #fff;
  background: #141414;
  border: 1px solid #000;
}

.c-button--black:hover {
  border: 1px solid #000;
}

.c-button--black::after {
  background-color: #7E1A2E;
}

/*------------------------------
  border black button
------------------------------*/
.c-button--border-black::after {
  background-color: #000;
}

.c-button--border-none {
  width: 150px;
  color: #000;
  border: none;
}

/*------------------------------
  border none button
------------------------------*/
.c-button--border-none:hover {
  background-color: #dbdbdb00;
}

.c-button--border-none::after {
  background-color: #7E1A2E;
}

.c-button--border-none::before {
  background-color: #000;
  bottom: 8px;
  content: "";
  height: 1px;
  left: calc(50% - 37.5px);
  position: absolute;
  transform: scale(0, 1);
  transform-origin: left top;
  transition: transform 0.3s ease;
  width: 75px;
}

.c-button--border-none:hover::before {
  transform: scale(1, 1);
}

/*------------------------------
  dropdown button
------------------------------*/
.dropdown {
  width: 100%;
  margin: 0 auto 50px;
}

.dropdown:last-child {
  margin: 0 auto;
}

.dropdown__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 600px;
  padding: 12px 16px;
  margin: 0 auto;
  background: #333;
  color: #fff;
  border: none;
  font-size: 1.5rem;
  text-align: center;
  border-radius: 0;
  cursor: pointer;
}

.dropdown__text {
  margin-bottom: 3px;
}

.dropdown__chevron {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 1px solid #fff;
  border-bottom: 1px solid #fff;
  transform: rotate(45deg);
  transition: transform 0.3s ease;
}

.dropdown__btn.is-open .dropdown__chevron {
  transform: rotate(-135deg);
  /* 上向きに */
}

.dropdown__container {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  width: 100%;
  padding: 20px 0 30px;
  box-sizing: border-box;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.3s ease, max-height 0.3s ease;
}

.dropdown__container.is-open {
  opacity: 1;
  max-height: 3000px;
}

.menu-column{
  width: calc(50% - 15px);
  /* gapの半分引いて2列に */
  box-sizing: border-box;
  padding: 30px 0 15px;
}

.menu-column__title{
  font-size: 1.6rem;
  font-weight: bold;
  text-align: center;
  border-bottom: 1px solid currentColor;
  padding-bottom: 10px;
  margin: 20px 0 10px;
}

.menu-column ul{
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-column li{
  display: flex;
  justify-content: space-between;
  font-size: 1.4rem;
  border-bottom: 1px solid #828282;
  padding: 10px 0;
}

.menu-column__mixer{
  flex-direction: column;
  border-bottom: none;
  border: 1px solid #828282;
  padding: 15px;
  margin-top: 20px;
}

.menu-column__mixer p{
  font-size: 1.2rem;
  text-align: center;
}

.menu-column a:hover{
  text-decoration: underline;
}

.menu-column__desc{
  width: 100%;
  text-align: center;
  border: 1px solid currentColor;
  padding: 20px;
}

@media (max-width: 768px) {
  .dropdown__container.is-open {
    opacity: 1;
    max-height: 6000px;
  }

  .dropdown__container {
    flex-direction: column;
    gap: 10px;
  }

  .menu-column {
    width: 100%;
    /* スマホでは1列に */
    padding: 10px 0;
  }

  .menu-column__desc{
    width: auto;
  }
}


/*------------------------------
  arrow link
------------------------------*/
.arrow-link {
  width: 100%;
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  color: #000;
  font-size: 1.4rem;
  position: relative;
}

.arrow-link::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
  /* 斜め右下を向いた矢印 */
  margin-right: 2px;
}