/**
 * ヘッダー（ナビ・ドロワー・ハンバーガー）
 */

/* ==========================================================================
   ヘッダー（PC 共通・Figma 仕様）
   - 高さ 90px / パディング 24px 40px / ロゴ 140×35 / ナビ gap 16px
   - フォント Quicksand 700 14px / Gray 90
   ========================================================================== */
.senmon-school-header {
  width: 100%;
  min-height: 90px;
  padding: 0 24px;
  background-color: var(--senmon-color-white);
  box-sizing: border-box;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
}

.senmon-school-header__inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  max-width: none;
  margin: 0 auto;
  box-sizing: border-box;
}

.senmon-school-header__logo {
  flex-shrink: 0;
  transition: opacity 300ms ease;
}

.senmon-school-header__logo:hover {
  opacity: 0.7;
}

.senmon-school-header__logo a {
  display: inline-block;
  text-decoration: none;
  color: var(--senmon-color-gray-90);
  font-family: var(--senmon-font-nav);
  font-weight: 700;
  font-size: 14px;
  line-height: 0;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  font-size: 0;
}

.senmon-school-header__logo img {
  display: block;
  max-width: 140px;
  height: 35px;
  object-fit: contain;
}

.senmon-school-header__nav {
  display: flex;
  align-items: center;
  margin-left: auto;
  padding-left: 24px;
}

.senmon-school-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 16px;
}

.senmon-school-menu__item {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.senmon-school-menu__link-label {
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: var(--senmon-font-nav);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--senmon-color-gray-90);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--senmon-transition);
}

.senmon-school-menu__link-label:hover,
.senmon-school-menu__link-label:focus {
  color: var(--senmon-color-primary);
}

.senmon-school-menu__item--has-children:hover .senmon-school-menu__link-label,
.senmon-school-menu__item--has-children.is-open .senmon-school-menu__link-label {
  color: var(--senmon-color-primary);
}

.senmon-school-menu__link {
  margin-bottom: 16px;
  font-family: var(--senmon-font-nav);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--senmon-color-gray-90);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--senmon-transition);
}

.senmon-school-menu__link:hover,
.senmon-school-menu__link:focus {
  color: var(--senmon-color-primary);
}

/* ドロップダウン開閉（＋／−）グラフィックは 10×10 を 28×28 のボタン中央に配置 */
.senmon-school-menu__dropdown-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

.senmon-school-menu__dropdown-icon:focus {
  outline: none;
}

.senmon-school-menu__dropdown-icon:focus-visible {
  outline: 2px solid var(--senmon-color-primary);
  outline-offset: 2px;
}

.senmon-school-menu__dropdown-icon::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 2px;
  transform: translate(-50%, -50%);
  background-color: var(--senmon-color-gray-90);
  border-radius: 100px;
}

.senmon-school-menu__dropdown-icon::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2px;
  height: 10px;
  transform: translate(-50%, -50%);
  background-color: var(--senmon-color-gray-90);
  border-radius: 100px;
  transition: opacity var(--senmon-transition);
}

.senmon-school-menu__item--has-children:hover .senmon-school-menu__dropdown-icon::before,
.senmon-school-menu__item--has-children:hover .senmon-school-menu__dropdown-icon::after,
.senmon-school-menu__item--has-children.is-open .senmon-school-menu__dropdown-icon::before,
.senmon-school-menu__item--has-children.is-open .senmon-school-menu__dropdown-icon::after {
  background-color: var(--senmon-color-primary);
}

/* 展開中（.is-open）は縦棒を隠して「−」。再度クリックで閉じる */
.senmon-school-menu__item--has-children.is-open .senmon-school-menu__dropdown-icon::after {
  opacity: 0;
}

/* サブメニュー（Figma 4078-15764: 黄→緑グラデーション・角丸16px・区切り線） */
.senmon-school-menu__item--has-children {
  position: relative;
  gap: 6px;
}

/* PC ヘッダーのみ: プライマリ行と絶対配置サブメニューの隙間を埋め、ホバーで移動中に閉じない */
.senmon-school-header__nav .senmon-school-menu__item--has-children::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 12px;
  z-index: 99;
}

.senmon-school-menu__submenu {
  list-style: none;
  margin: 0;
  padding: 24px 24px 4px;
  min-width: 240px;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background-color: var(--senmon-color-white);
  background-image: var(--senmon-courses-header-accordion-gradient);
  border: none;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 100;
  box-sizing: border-box;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
}

.senmon-school-menu__item--has-children.is-open .senmon-school-menu__submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.senmon-school-menu__submenu .senmon-school-menu__item {
  display: block;
  border-bottom: 1px solid var(--senmon-color-gray-90);
}

.senmon-school-menu__submenu .senmon-school-menu__item:last-child {
  border-bottom: none;
}

.senmon-school-menu__submenu .senmon-school-menu__link {
  display: block;
  padding: 0;
  font-size: 14px;
  border: none;
}

.senmon-school-menu__submenu .senmon-school-menu__link:hover,
.senmon-school-menu__submenu .senmon-school-menu__link:focus {
  color: var(--senmon-color-primary);
}

.senmon-school-menu__submenu .senmon-school-menu__dropdown-icon {
  display: none;
}

/* ハンバーガーボタン（TB/SP のみ表示）Figma: 25×25 / 3本線 4px / gap 12px / Brand Color */
.senmon-school-header__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 25px;
  height: 25px;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: opacity var(--senmon-transition);
}

.senmon-school-header__hamburger:hover,
.senmon-school-header__hamburger:focus {
  opacity: 0.8;
}

/* ハンバーガー線：Figma SVG 相当（25×25・線4px・間隔6.5px）→ 開時は中央を消し上下で× */
.senmon-school-header__hamburger-surface {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 25px;
  flex-shrink: 0;
}

.senmon-school-header__hamburger-bar {
  display: block;
  height: 4px;
  width: 100%;
  border-radius: 2px;
  background-color: var(--senmon-color-primary);
  transform-origin: center;
  transition:
    transform var(--senmon-drawer-transition),
    opacity var(--senmon-drawer-transition);
}

/* 閉じ状態を明示し、×へ／三線への変形を双方向トランジション可能に */
.senmon-school-header__hamburger-bar--top {
  transform: translate3d(0, 0, 0) rotate(0deg);
  transition-delay: 0s;
}

.senmon-school-header__hamburger-bar--mid {
  opacity: 1;
  transform: scaleX(1);
  /* 格納時：先に上下が平行に戻ってから中央線が現れる */
  transition-delay: calc(var(--senmon-drawer-transition-duration) * 0.28);
}

.senmon-school-header__hamburger-bar--bottom {
  transform: translate3d(0, 0, 0) rotate(0deg);
  transition-delay: 0s;
}

/* 展開時：中央を先に消してから上下が交差 */
body.is-drawer-open .senmon-school-header__hamburger-bar--top {
  transform: translateY(10.5px) rotate(45deg);
  transition-delay: calc(var(--senmon-drawer-transition-duration) * 0.28);
}

body.is-drawer-open .senmon-school-header__hamburger-bar--mid {
  opacity: 0;
  transform: scaleX(0);
  transition-delay: 0s;
}

body.is-drawer-open .senmon-school-header__hamburger-bar--bottom {
  transform: translateY(-10.5px) rotate(-45deg);
  transition-delay: calc(var(--senmon-drawer-transition-duration) * 0.28);
}

/* ドロワーオーバーレイ・パネル（TB/SP） */
.senmon-school-header__drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--senmon-drawer-transition);
}

/* TB/SP: ヘッダー直下に白パネルを展開（ドロワー内の Course/About サブメニューと同様、上から降りるのではなく下方向） */
.senmon-school-header__drawer {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  max-width: none;
  box-sizing: border-box;
  padding: 0 24px;
  margin: 0;
  background-color: var(--senmon-color-white);
  box-shadow: none;
  z-index: 9999;
  max-height: 0;
  min-height: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transform-origin: top center;
  transform: translateY(-8px) scaleY(1.0);
  will-change: max-height, min-height, padding-block, transform;
  /* max-height / min-height を同じ時間・イージングで動かし、開きが閉じより速く見えるのを防ぐ */
  transition:
    max-height var(--senmon-drawer-transition),
    min-height var(--senmon-drawer-transition),
    padding-block var(--senmon-drawer-transition),
    transform var(--senmon-drawer-transition);
}

@media (prefers-reduced-motion: reduce) {
  .senmon-school-header__drawer-overlay,
  .senmon-school-header__drawer {
    transition: none;
  }

  .senmon-school-header__hamburger-bar {
    transition: none;
  }
}

.senmon-school-drawer-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.senmon-school-drawer-menu .senmon-school-menu__item {
  display: block;
  border-bottom: 1px solid var(--senmon-color-gray-90);
}

.senmon-school-drawer-menu > .senmon-school-menu__item:last-child { 
  border-bottom: none;
}

.senmon-school-drawer-menu .senmon-school-menu__link-label {
  display: block;
  padding: 16px 16px 16px 0;
  font-size: 14px;
}

/* 子を持つ行：ラベルと＋を横並び。サブメニューは .is-open まで非表示 */
/* gap: 6px（親 .senmon-school-menu__item--has-children 由来）を無効化 — ラベル行と ul の間の余白で max-height トランジション末尾がカクつくのを防ぐ */
.senmon-school-drawer-menu .senmon-school-menu__item--has-children {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__link-label {
  flex: 1 1 auto;
  min-width: 0;
  padding: 16px 8px 16px 0;
}

.senmon-school-drawer-menu 
.senmon-school-menu__item--has-children 
> .senmon-school-menu__link-label {
  color: var(--senmon-color-gray-90);
}

.senmon-school-drawer-menu 
.senmon-school-menu__item--has-children.is-open 
> .senmon-school-menu__link-label {
  padding-bottom: 16px;
  color: var(--senmon-color-primary);
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__dropdown-icon {
  display: inline-flex;
  flex-shrink: 0;
  margin-right: 10px;
}

/* SP/TBドロワーでは閉じた後に hover 色が残らないよう、非展開時の＋色を固定する */
.senmon-school-header__drawer-nav .senmon-school-menu__item--has-children:not(.is-open) .senmon-school-menu__dropdown-icon::before,
.senmon-school-header__drawer-nav .senmon-school-menu__item--has-children:not(.is-open) .senmon-school-menu__dropdown-icon::after {
  background-color: var(--senmon-color-gray-90);
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__submenu {
  display: block;
  flex: 1 1 100%;
  width: 100%;
  position: static;
  margin-top: 0;
  padding: 0 0 12px;
  border: none;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  background-image: none;
  min-width: 0;
  flex-direction: unset;
  gap: 0;
  opacity: 1;
  visibility: visible;
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__submenu[hidden] {
  display: none !important;
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__submenu:not([hidden]):not(.is-open) {
  display: block !important;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  will-change: max-height;
  /* max-height と opacity を同一イージングに揃え、終端付近の見かけの止まりを抑える */
  transition: max-height 500ms cubic-bezier(0.22, 0.61, 0.36, 1), opacity 500ms cubic-bezier(0.22, 0.61, 0.36, 1) !important;
}

.senmon-school-drawer-menu .senmon-school-menu__item--has-children > .senmon-school-menu__submenu.is-open {
  display: block !important;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  will-change: max-height;
  transition: max-height 500ms cubic-bezier(0.22, 0.61, 0.36, 1), opacity 500ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.senmon-school-drawer-menu .senmon-school-menu__submenu .senmon-school-menu__item {
  border-bottom: none;
}

.senmon-school-drawer-menu .senmon-school-menu__submenu .senmon-school-menu__link {
  padding: 5px 0;
  margin-top: 0;
  margin-bottom: 0;
  font-size: 13px;
  white-space: normal;
  overflow-wrap: anywhere;
  box-sizing: border-box;
  min-height: 20px;
  display: flex;
  align-items: center;
}

/* ヘッダー 1360px 以下：横並びナビ非表示・ハンバーガー表示・ドロワー有効 */
@media (max-width: 1360px) {
  .senmon-school-header {
    padding: 24px;
  }

  .senmon-school-header__inner {
    justify-content: space-between;
    gap: 0;
  }

  .senmon-school-header__nav {
    display: none;
  }

  .senmon-school-header__hamburger {
    display: flex;
  }

  /*
   * ドロワーは header 内の z-index のみ有効なため、ヘッダー全体(100)が画面右固定ボタン(9500)より下に描画され
   * メニューの＋が押せないことがある。展開中はヘッダー文脈ごと前面へ。
   */
  body.is-drawer-open .senmon-school-header {
    z-index: 10050;
  }

  /* ドロワー・オーバーレイよりヘッダー帯を手前にし、×が同位置で表示・押下可能になる */
  body.is-drawer-open .senmon-school-header__inner {
    position: relative;
    z-index: 10000;
  }

  body.is-drawer-open .senmon-school-header__drawer-overlay {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }

  .senmon-school-header__drawer {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-1px);
    transition: max-height 0.5s ease, transform 0.4s ease, opacity 0.15s ease 0.25s;
  }

  body.is-drawer-open .senmon-school-header__drawer {
    display: flex;
    flex-direction: column;
    padding-block: 0px 24px;
    overflow: hidden;
    pointer-events: auto;
    opacity: 1;
    max-height: 80vh; /* ここは余裕持たせる */
    transform: translateY(0);
    transition-delay: 0s;
  }

  body.is-drawer-open .senmon-school-header__drawer-nav {
    margin-top: 0;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
  }
}

@media (max-width: 600px) {
  /* SP: top/bottom 固定で flex-1 的に残り高を使い、下部固定バーは常に回避 */
  body.is-drawer-open .senmon-school-header__drawer {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: calc(92px + env(safe-area-inset-bottom, 0));
    padding-bottom: 8px;
  }

  .senmon-school-header {
    padding: var(--senmon-page-gutter-x);
    min-height: 0;
  }

  .senmon-school-header__logo {
    padding-left: 0;
  }

  .senmon-school-header__logo img {
    max-width: 120px;
    height: 28px;
  }

  .senmon-school-drawer-menu .senmon-school-menu__link {
    font-size: 13px;
  }
}