/* ==============================
   Mobile Header / Drawer Menu
   既存の style.css の後に読み込んでください。
============================== */

.site-header__menu-button,
.mobile-menu {
  display: none;
}

body.is-menu-open {
  overflow: hidden;
}

@media (max-width: 768px) {
  /* PC用ナビゲーションはスマートフォンで非表示 */
  .site-header__utility,
  .site-header__nav {
    display: none;
  }

  /* 既存レスポンシブ指定をスマホヘッダー用に上書き */
  .site-header {
    position: relative;
    z-index: 100;
    min-height: 62px;
    padding: 0 16px;
    border-bottom: 0;
    background: #fff;
  }

  .site-header__inner {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 62px;
    margin: 0;
    gap: 24px;
  }

  .site-header__logo {
    width: min(56vw, 210px);
  }

  /* ==============================
     Hamburger Button
  ============================== */

  .site-header__menu-button {
    display: grid;
    flex: 0 0 auto;
    width: 34px;
    height: 30px;
    padding: 6px 2px;
    border: 0;
    background: transparent;
    place-content: center;
    gap: 8px;
    cursor: pointer;
  }

  .site-header__menu-line {
    display: block;
    width: 26px;
    border-top: 2px solid var(--color-accent);
  }

  /* ==============================
     Drawer Base
  ============================== */

  .mobile-menu {
    position: fixed;
    z-index: 1000;
    inset: 0;
    display: block;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: #f7f7f7;
    visibility: hidden;
    opacity: 0;
    transform: translateX(100%);
    transition:
      transform 0.3s ease,
      opacity 0.3s ease,
      visibility 0.3s;
    pointer-events: none;
  }

  .mobile-menu.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
  }

  /* ==============================
     Drawer Header
  ============================== */

  .mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 74px;
    padding: 12px 18px;
    background: #fff;
  }

  .mobile-menu__logo {
    width: min(60vw, 230px);
  }

  .mobile-menu__close-button {
    position: relative;
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
  }

  .mobile-menu__close-button span {
    position: absolute;
    top: 50%;
    left: 50%;
    display: block;
    width: 28px;
    border-top: 2px solid var(--color-accent);
  }

  .mobile-menu__close-button span:first-child {
    transform: translate(-50%, -50%) rotate(45deg);
  }

  .mobile-menu__close-button span:last-child {
    transform: translate(-50%, -50%) rotate(-45deg);
  }

  .mobile-menu__body {
    padding: 0 18px 52px;
  }

  /* ==============================
     Main Navigation
  ============================== */

  .mobile-menu__nav-item {
    border-bottom: 1px solid #cfcfcf;
  }

  .mobile-menu__nav-link {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) 14px;
    align-items: center;
    min-height: 81px;
    gap: 14px;
    padding: 10px 14px 10px 16px;
    color: #666;
  }

  .mobile-menu__nav-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
  }

  .mobile-menu__nav-label {
    font-size: 24px;
    font-weight: 500;
    line-height: 1.2;
  }

  .mobile-menu__arrow {
    width: 9px;
    height: 9px;
    border-top: 2px solid var(--color-accent);
    border-right: 2px solid var(--color-accent);
    transform: rotate(45deg);
  }

  .mobile-menu__nav-link--accent {
    color: #666;
  }

  .mobile-menu__nav-link.is-active {
    color: #666;
  }

  .mobile-menu__nav-link:hover {
    color: var(--color-accent);
  }

  /* ==============================
     Calendar / Recruit / Contact
  ============================== */

  .mobile-menu__utility {
    margin-top: 28px;
  }

  .mobile-menu__utility-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 58px;
    padding: 12px 20px;
    border-bottom: 2px solid #fff;
    color: #fff;
    font-size: 20px;
    font-weight: 500;
    background: var(--color-accent);
  }

  .mobile-menu__external-icon {
    position: relative;
    width: 13px;
    height: 13px;
    border: 1.5px solid rgba(255, 255, 255, 0.72);
  }

  .mobile-menu__external-icon::before {
    content: "";
    position: absolute;
    top: -5px;
    right: -5px;
    width: 8px;
    height: 8px;
    border-top: 1.5px solid rgba(255, 255, 255, 0.72);
    border-right: 1.5px solid rgba(255, 255, 255, 0.72);
  }

  .mobile-menu__external-icon::after {
    content: "";
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    border-top: 1.5px solid rgba(255, 255, 255, 0.72);
    transform: rotate(-45deg);
    transform-origin: right center;
  }

  /* ==============================
     SNS
  ============================== */

  .mobile-menu__sns-list {
    display: flex;
    justify-content: center;
    gap: 34px;
    margin-top: 26px;
  }

  .mobile-menu__sns-list a {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
  }

  .mobile-menu__sns-list img {
    width: 30px;
    height: 30px;
    object-fit: contain;
  }
}

@media (max-width: 380px) {
  .mobile-menu__nav-link {
    grid-template-columns: 58px minmax(0, 1fr) 16px;
    min-height: 76px;
    padding-inline: 10px;
  }

  .mobile-menu__nav-icon {
    width: 36px;
    height: 36px;
  }

  .mobile-menu__nav-label {
    font-size: 22px;
  }
}