/*----------------------------
  SP ハンバーガーメニュー（看板デザイン）
---------------------------*/

.sp-nav {
  display: none;
}

.header__menu-pc {
  display: block;
}

@media all and (max-width: 768px) {
  .header__menu-pc {
    display: none;
  }

  .sp-nav {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 100%;
    padding: min(16vw, 72px) 0 min(10vw, 48px);
    box-sizing: border-box;
    overflow: hidden;
  }

  .header__content > .header__menu {
    background-color: #e8a020;
    background-image: url(../../img/01_TOP/mainvisual-bg.jpg);
    background-size: cover;
    background-position: center;
    padding: 0;
    overflow: hidden;
  }

  /* 全画面マスク。円は左右だけ見切れ、上下の弧は画面端まで */
  .sp-nav__circle {
    position: fixed;
    inset: 0;
    z-index: 0;
    width: 100%;
    height: 100%;
    height: 100dvh;
    overflow: hidden;
    pointer-events: none;
  }

  .sp-nav__circle-img {
    position: absolute;
    left: 50%;
    top: 50%;
    width: max(94.5vw, 75vh);
    width: max(94.5vw, 75dvh);
    max-width: none;
    height: auto;
    aspect-ratio: 1 / 1;
    transform: translate(-50%, -50%);
    transform-origin: center center;
    animation: sp-nav-circle-spin 30s linear infinite;
  }

  .sp-nav__inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding: 0 3%;
    box-sizing: border-box;
    gap: min(4vw, 24px);
  }

  @keyframes sp-nav-circle-spin {
    to {
      transform: translate(-50%, -50%) rotate(-360deg);
    }
  }

  .sp-nav__list {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: min(1.2vw, 6px);
    width: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .sp-nav__item {
    flex: 0 1 auto;
    width: min(17.5vw, 52px);
  }

  .sp-nav__link {
    display: block;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .sp-nav__link:hover,
  .sp-nav__link:focus-visible {
    transform: translateY(-2px);
    opacity: 0.92;
  }

  .sp-nav__link img {
    display: block;
    width: 100%;
    height: auto;
  }

  .sp-nav__niku {
    position: relative;
    z-index: 1;
    width: min(38vw, 160px);
    aspect-ratio: 160 / 140;
    margin: min(1vw, 6px) auto 0;
  }

  .sp-nav__niku-img {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center bottom;
    opacity: 1;
    visibility: visible;
    -webkit-transition: none;
    transition: none;
  }

  .sp-nav__niku-img--open {
    opacity: 0;
    visibility: hidden;
  }

  body.nav-niku-open .sp-nav__niku-img--default {
    opacity: 0;
    visibility: hidden;
  }

  body.nav-niku-open .sp-nav__niku-img--open {
    opacity: 1;
    visibility: visible;
  }

  body.nav-is-closing #nav-toggle {
    pointer-events: none;
  }

  /* 開いたとき：トグルを白系に（オレンジ背景上で見えるように） */
  body.open #nav-toggle .nav-toggle__bars span {
    background: #fff;
  }

  body.open #nav-toggle .nav-toggle__label--close {
    color: #fff;
  }
}

@media all and (max-width: 530px) {
  .sp-nav__item {
    width: min(12.09vw, 52px);
    max-width: 52px;
  }
}