/* =============================================================================
   header.css — 固定ヘッダー、デスクトップのナビ、モバイルメニュー
   光と大きな文字がページを担うあいだ、ナビは控えめにしておく。
   ============================================================================= */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 3.5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
  transition: background .3s,padding .3s;
  gap: 20px;
}

.header.scrolled,
.header.menu-open {
  background: #fffffff0;
  backdrop-filter: blur(18px);
  padding-block: 12px;
  border-bottom: 1px solid #dfebf5;
}

.logo {
  width: 157px;
  flex-shrink: 0;
}

.logo img {
  width: 100%;
  height: auto;
}

.logo-white {
  display: none;
}

.desktop-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  line-height: 1;
  color: var(--accent-deep);
}

.desktop-nav > a:not(.btn) {
  position: relative;
}

.desktop-nav > a:not(.btn)::after {
  content: '';
  display: block;
  position: absolute;
  bottom: -9px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-orange);
  transition: width .2s;
}

.desktop-nav > a:hover:after {
  width: 100%;
}

.desktop-nav > .btn + .btn {
  margin-left: -16px;
}

.menu-toggle {
  display: none;
}

.mobile-nav[hidden] {
  display: none;
}

@media (max-width:1100px) {
  .desktop-nav {
    gap: 20px;
  }

  .desktop-nav > .btn {
    --btn-pad: 16px;
    --btn-gap: 12px;
  }
}

@media (max-width:900px) {
  .desktop-nav {
    gap: 14px;
  }

  .logo {
    width: 136px;
  }
}

@media (max-width:760px) {
  .header {
    padding: 17px 6vw;
  }

  .header.scrolled {
    padding: 12px 6vw;
  }

  .logo {
    width: 126px;
  }

  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--accent);
  }

  .menu-toggle i {
    width: 24px;
    height: 9px;
    border-top: 1.5px solid;
    border-bottom: 1.5px solid;
  }

  .mobile-nav {
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    padding: 24px 8vw 36px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: #fff;
    z-index: 49;
    border-bottom: 1px solid var(--rule);
    box-shadow: 0 20px 30px #12418210;
    line-height: 1.5;
    color: var(--accent);
  }

  .mobile-nav .text-link {
    justify-content: space-between;
  }
}

.header:not(.scrolled):not(.menu-open) {
  background: linear-gradient(180deg, #1644afc7, #1644af66 70%, #1644af00);
}

.header:not(.scrolled):not(.menu-open) .logo-color {
  display: none;
}

.header:not(.scrolled):not(.menu-open) .logo-white {
  display: block;
}

.header:not(.scrolled):not(.menu-open) .desktop-nav,
.header:not(.scrolled):not(.menu-open) .menu-toggle {
  color: #fff;
}

/* オープニングのストーリーの間はブランドだけを中央に見せ、ナビ全体は About で現れる。
   <html> のフラグは初回描画の前に付与される。JS がなければ通常のナビが最初から
   表示される。 */
.journey-header-managed .header {
  transition: background .3s,padding .3s;
}

.journey-header-managed .header > .logo {
  transform: translateX(0);
  opacity: 1;
  transition: transform .7s cubic-bezier(.22,1,.36,1),opacity .35s ease;
}

.journey-header-managed .header .desktop-nav,
.journey-header-managed .header .menu-toggle {
  transition: opacity .3s ease .2s;
}

.journey-header-managed:not(.journey-header-visible) .header {
  background: transparent;
  border-bottom-color: transparent;
  pointer-events: none;
}

.journey-header-managed:not(.journey-header-visible) .header > .logo {
  transform: translateX(calc(46.5vw - 50%));
  pointer-events: auto;
}

.journey-header-managed:not(.journey-header-visible) .header .desktop-nav,
.journey-header-managed:not(.journey-header-visible) .header .menu-toggle,
.journey-header-managed:not(.journey-header-visible) .mobile-nav {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition-delay: 0s;
}

/* ブランドはオープニングのロゴ演出が終わるまで待つ。 */
.journey-header-managed.logo-intro-pending .header > .logo {
  opacity: 0;
}

@media (max-width:760px) {
  .journey-header-managed:not(.journey-header-visible) .header > .logo {
    transform: translateX(calc(44vw - 50%));
  }
}

.logo-intro-pending .header .logo {
  visibility: hidden;
}

/* スクロール後：すりガラス調の半透明の白（開いたモバイルメニューは不透明のまま）。 */
.header.scrolled:not(.menu-open) {
  background: rgba(255, 255, 255, .52);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: rgba(255, 255, 255, .45);
}

/* ----- Services のドロップダウン（下層ページのナビ。TOP は未使用）--------------------- */
.nav-drop {
  position: relative;
}

.nav-drop__toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  color: inherit;
  line-height: 1;
}

/* シェブロンは文字ではなく CSS で描く：ナビの文字サイズでは ▾ が小さすぎて読めず、
   文字だと大きさや太さがフォントに左右されるため。 */
.nav-drop__toggle > span {
  width: .5em;
  height: .5em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-.15em) rotate(45deg);
  transition: transform .25s;
}

.nav-drop__toggle[aria-expanded="true"] > span {
  transform: translateY(.15em) rotate(225deg);
}

.nav-drop__toggle:is(:hover, :focus-visible) {
  box-shadow: none;
  filter: none;
}

.nav-drop__panel {
  position: absolute;
  top: calc(100% + 22px);
  left: 50%;
  translate: -50% 0;
  min-width: 280px;
  padding: 10px;
  display: grid;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 18px 40px rgb(18 65 130 / .16);
  color: var(--c-deep);
}

.nav-drop__panel[hidden] {
  display: none;
}

.nav-drop__panel a {
  display: grid;
  gap: 4px;
  padding: 12px 16px;
  border-radius: 10px;
  line-height: 1.3;
  transition: background-color .2s;
}

.nav-drop__panel a:hover,
.nav-drop__panel a[aria-current="page"] {
  background: var(--c-pale);
}

.nav-drop__panel small {
  color: var(--c-muted);
}

/* モバイルメニュー内の Services の小項目 */
.mobile-nav__sub {
  display: grid;
  gap: 8px;
  margin: -4px 0 4px;
  padding-left: 16px;
  border-left: 1px solid var(--rule);
}

.desktop-nav > a[aria-current="page"]::after,
.nav-drop__toggle[data-current]::after {
  width: 100%;
}

.nav-drop__toggle::after {
  content: '';
  position: absolute;
  bottom: -9px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-orange);
  transition: width .2s;
}

.nav-drop__toggle {
  position: relative;
}

.nav-drop:hover .nav-drop__toggle::after {
  width: 100%;
}

/* ボタンとパネルの隙間でホバーが切れないよう、見えない橋をかける */
.nav-drop__panel::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -24px;
  height: 24px;
}

/* ----- スマホのメニュー（2026-10-29 実機レビュー：上に隙間、簡素すぎる）-----------------------
   画面全体を覆うパネルにして、ヘッダーの下に隙間を作らない（ヘッダーの高さに依存しない）。
   項目は大きめの英字と細い罫線の行、Services の小項目は小さなピル、Recruit と Contact は
   下にボタンで置く。採用ページのメニュー（Entry ボタン 1 つ）も同じ見た目になる。 */
@media (max-width: 760px) {
  .header.menu-open {
    background: #fff;
    border-bottom-color: transparent;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .mobile-nav {
    inset: 0;
    top: 0;
    height: 100dvh;
    padding: 92px 8vw calc(32px + env(safe-area-inset-bottom));
    gap: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-bottom: 0;
    box-shadow: none;
    background:
      radial-gradient(90% 45% at 100% 100%, rgb(255 152 92 / .22), transparent 70%),
      radial-gradient(90% 45% at 0% 100%, rgb(99 187 229 / .2), transparent 70%),
      #fff;
    animation: mobile-nav-in .35s cubic-bezier(.22,1,.36,1) both;
  }

  .mobile-nav > a.t-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 17px 2px;
    border-bottom: 1px solid var(--rule);
    font-family: var(--f-serif);
    font-size: 24px;
    line-height: 1.2;
    letter-spacing: .01em;
    color: var(--c-deep);
  }

  .mobile-nav > a.t-body::after {
    content: '→';
    font-family: var(--f-ui);
    font-size: 16px;
    color: var(--c-orange);
    transition: transform .25s;
  }

  .mobile-nav > a.t-body:active::after {
    transform: translateX(4px);
  }

  .mobile-nav > a.t-body[aria-current="page"] {
    color: var(--c-orange);
  }

  /* Services の行は小項目までを 1 つの塊にする（罫線は小項目の下に引く）。 */
  .mobile-nav > a.t-body:has(+ .mobile-nav__sub) {
    border-bottom: 0;
    padding-bottom: 10px;
  }

  .mobile-nav__sub {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0 0 17px;
    border-left: 0;
    border-bottom: 1px solid var(--rule);
  }

  .mobile-nav__sub > a.t-body {
    padding: 7px 14px;
    border: 1px solid #d6e2f2;
    border-radius: 999px;
    background: rgb(255 255 255 / .7);
    font-size: 13px;
    line-height: 1.3;
    color: var(--c-blue);
  }

  .mobile-nav__sub > a[aria-current="page"] {
    border-color: var(--c-orange);
    color: var(--c-orange);
  }

  .mobile-nav__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 32px;
  }

  .mobile-nav__actions > .btn,
  .mobile-nav > .btn {
    --btn-h: 56px;
    --btn-pad: 22px;
    --btn-gap: 12px;
  }

  .mobile-nav .btn--light {
    border-color: #c9d7ec;
  }

  .mobile-nav > .btn {
    justify-self: center;
    align-self: center;
    width: 240px;
    margin-top: 32px;
  }

  @keyframes mobile-nav-in {
    from { opacity: 0; transform: translateY(-8px); }
  }

  /* 開いている間は MENU の 2 本線を × にする。 */
  .menu-toggle i {
    position: relative;
    transition: border-color .2s;
  }

  .menu-toggle i::before,
  .menu-toggle i::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    border-top: 1.5px solid currentColor;
    margin-top: -.75px;
    opacity: 0;
    transition: transform .3s cubic-bezier(.22,1,.36,1), opacity .2s;
  }

  .menu-toggle[aria-expanded="true"] i {
    border-color: transparent;
  }

  .menu-toggle[aria-expanded="true"] i::before {
    opacity: 1;
    transform: rotate(38deg);
  }

  .menu-toggle[aria-expanded="true"] i::after {
    opacity: 1;
    transform: rotate(-38deg);
  }

  html:has(.header.menu-open) {
    overflow: hidden;
  }
}

@media (max-width: 760px) and (prefers-reduced-motion: reduce) {
  .mobile-nav {
    animation: none;
  }
}