/* ============================================================
   Header & Navigation
   ============================================================ */

/* ---- Site Header ---- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,0,0,.08);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
  padding-inline: var(--space-6);
  width: 100%;
}

@media (min-width: 1024px) {
  .header-inner { height: 72px; }
}

/* ---- Logo ---- */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.header-logo__wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.header-logo__img {
  height: 30px;
  width: auto;
  max-width: 160px;
  display: block;
}

.header-logo__school {
  font-size: 10px;
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  letter-spacing: 0.08em;
  line-height: 1;
}

@media (min-width: 1024px) {
  .header-logo__img {
    height: 36px;
    max-width: 200px;
  }

  .header-logo__school {
    font-size: 11px;
  }
}

.header-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header-logo__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
}

.header-logo__sub {
  font-size: var(--text-xs);
  color: var(--color-text-sub);
}

/* ---- Navigation ---- */
.header-nav {
  display: none;
  align-items: center;
  gap: var(--space-2);
}

.header-nav__list {
  display: flex;
  align-items: center;
  gap: 0;
}

/* ---- Nav item（ドロップダウン親） ---- */
.header-nav__item {
  position: relative;
}

.header-nav__link {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 0.45em 0.55em;
  font-size: 0.8125rem;
  font-weight: var(--weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: -0.01em;
  cursor: pointer;
}

/* ドロップダウン矢印 */
.header-nav__item.has-dropdown > .header-nav__link::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .5;
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.header-nav__item.has-dropdown:hover > .header-nav__link::after,
.header-nav__item.has-dropdown.is-open > .header-nav__link::after {
  transform: rotate(180deg);
  opacity: 1;
}

.header-nav__link:hover,
.header-nav__link.is-active {
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
}

/* ---- Dropdown Menu ---- */
.header-nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,.14), 0 0 0 1px rgba(0,0,0,.06);
  padding: var(--space-2);
  padding-top: 14px;
  z-index: calc(var(--z-header) + 5);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  pointer-events: none;
}

/* 吹き出し三角 */
.header-nav__dropdown::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 6px;
  background: var(--color-white);
  clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
}

/* ホバーまたは.is-openで表示 */
.header-nav__item.has-dropdown:hover .header-nav__dropdown,
.header-nav__item.has-dropdown.is-open .header-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.header-nav__dropdown-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.header-nav__dropdown-item {
  border-bottom: 1px solid var(--color-border);
}

.header-nav__dropdown-item:last-child { border-bottom: none; }

.header-nav__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.header-nav__dropdown-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.header-nav__dropdown-icon {
  font-size: 1.2em;
  flex-shrink: 0;
}

.header-nav__dropdown-text {}

.header-nav__dropdown-sub {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  font-weight: var(--weight-regular);
}

/* WordPress .sub-menu 対応（管理画面でメニューを設定した場合） */
.header-nav__list .sub-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 200px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,.14), 0 0 0 1px rgba(0,0,0,.06);
  padding: var(--space-2);
  padding-top: 14px;
  z-index: calc(var(--z-header) + 5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  pointer-events: none;
  list-style: none;
}

.header-nav__list li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.header-nav__list .sub-menu a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.header-nav__list .sub-menu a:hover {
  color: var(--color-primary);
  background: var(--color-primary-bg);
}

.header-nav__cta {
  margin-left: var(--space-3);
  flex-shrink: 0;
}


/* 1024px〜: デスクトップナビを表示（ハンバーガーはそのまま残す） */
@media (min-width: 1024px) {
  .header-nav { display: flex; }
  .header-nav__link {
    padding: 0.4em 0.45em;
    font-size: 0.8rem;
    letter-spacing: 0;
  }
}

@media (min-width: 1280px) {
  .header-nav__link {
    padding: 0.45em 0.6em;
    font-size: 0.875rem;
  }
}

/* ---- Hamburger ---- */
.header-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 44px;
  height: 44px;
  background: var(--color-primary-bg);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 12px 10px;
  z-index: calc(var(--z-header) + 10);
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.header-hamburger:hover {
  background: rgba(26,138,74,.15);
}

.header-hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.header-hamburger.is-open .header-hamburger__line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.header-hamburger.is-open .header-hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.header-hamburger.is-open .header-hamburger__line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ---- Mobile Menu Drawer ---- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-header) + 20);
  visibility: hidden;
  pointer-events: none;
}

.mobile-menu.is-open {
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0,0,0,.55);
  opacity: 0;
  transition: opacity 300ms ease;
  cursor: pointer;
}

.mobile-menu.is-open .mobile-menu__overlay {
  opacity: 1;
}

/* Panel */
.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(380px, 92vw);
  background-color: var(--color-white);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -8px 0 32px rgba(0,0,0,.15);
}

.mobile-menu.is-open .mobile-menu__panel {
  transform: translateX(0);
}

/* Panel header */
.mobile-menu__header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  height: 64px;
  border-bottom: 2px solid var(--color-primary);
  background: var(--color-white);
}

.mobile-menu__header-title {
  font-family: var(--font-en);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: .12em;
  color: var(--color-primary);
  text-transform: uppercase;
}

.mobile-menu__close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-gray);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-text);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.mobile-menu__close:hover {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}

/* Nav (scrollable) */
.mobile-menu__nav {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-bottom: var(--space-4);
}

.mobile-menu__list {
  list-style: none;
}

.mobile-menu__item {
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__item:first-child {
  border-top: none;
}

/* リンク共通 */
.mobile-menu__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  min-height: 52px;
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  position: relative;
}

.mobile-menu__link:active {
  background-color: var(--color-bg-gray);
}

.mobile-menu__link-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  opacity: .8;
}

/* 親メニューの › 矢印（子・ラベルには付けない） */
.mobile-menu__item:not(.mobile-menu__item--child):not(.mobile-menu__item--section) .mobile-menu__link::after {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-top: 2px solid var(--color-primary);
  border-right: 2px solid var(--color-primary);
  transform: rotate(45deg);
  margin-left: auto;
  flex-shrink: 0;
  opacity: .6;
}

/* セクション見出しリンク（コース紹介・ECCグループ） */
.mobile-menu__item--section {
  border-bottom: none;
  background: var(--color-bg-gray);
}

.mobile-menu__link--section {
  min-height: 44px;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--font-en);
  color: var(--color-text-sub);
}

.mobile-menu__link--section.mobile-menu__link--label {
  cursor: default;
}

.mobile-menu__link--section:not(.mobile-menu__link--label):hover {
  color: var(--color-primary);
}

/* 子メニュー */
.mobile-menu__item--child {
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__item--last-child {
  border-bottom: 2px solid var(--color-border);
}

.mobile-menu__item--child .mobile-menu__link {
  padding-left: var(--space-10);
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  min-height: 48px;
}

.mobile-menu__item--child .mobile-menu__link::before {
  content: '';
  position: absolute;
  left: calc(var(--space-5) + 2px);
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 1px;
  background: var(--color-border);
}

.mobile-menu__item--child .mobile-menu__link:hover {
  color: var(--color-primary);
}

/* CTA（下部固定） */
.mobile-menu__cta {
  flex-shrink: 0;
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-menu__tel-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-navy);
  transition: background-color var(--transition-fast);
}

.mobile-menu__tel-link:hover {
  background: rgba(26,138,74,.12);
}

.mobile-menu__tel-link .material-symbols-outlined {
  color: var(--color-primary);
  flex-shrink: 0;
}

.mobile-menu__tel-link span {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.mobile-menu__tel-link small {
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  font-weight: var(--weight-regular);
}

.mobile-menu__tel-link span:last-child,
.mobile-menu__tel-link > span {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  line-height: 1;
}

/* ---- Header CTA Tel (desktop) ---- */
.header-tel {
  display: none;
  flex-direction: column;
  align-items: flex-end;
  flex-shrink: 0;
}

.header-tel__label {
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  white-space: nowrap;
}

.header-tel__num {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.header-tel__num:hover {
  color: var(--color-primary);
}

/* 1280px〜: 電話番号を表示 */
@media (min-width: 1280px) {
  .header-tel { display: flex; }
}