@charset "UTF-8";

/* ============================================
   Common Styles - Header, Footer, ベースレイアウト
   ============================================ */

body {
  font-family: var(--font-jp);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

/* === ローダー === */
.loader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loader);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader__circle {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-bg-alt);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === コンテナ === */
.container {
  width: 100%;
  max-width: var(--container-base);
  margin: 0 auto;
  padding: 0 32px;
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--text {
  max-width: var(--container-text);
}

/* === ヘッダー === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: var(--z-header);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  max-width: var(--container-base);
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition-base);
}

.header__logo:hover {
  opacity: 0.75;
}

/* SVGロゴ画像（横長 684×196 ≈ 3.49:1）
   ヘッダー高さ80px内に収めつつロゴを大きく表示 */
.header__logo-img {
  height: 56px;
  width: auto;
  display: block;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header__nav-link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-base);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.header__nav-link:hover,
.header__nav-link.is-active {
  color: var(--color-primary);
}

.header__nav-link:hover::after,
.header__nav-link.is-active::after {
  transform: scaleX(1);
}

.header__contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 12px 24px;
  border-radius: 999px;
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: background var(--transition-base), transform var(--transition-base);
}

/* === 言語切替トグル ===
   現在の言語: 紺背景+白文字のピル
   非アクティブ: 透明背景+グレー文字 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  margin-left: 20px;
  font-family: var(--font-en);
  font-size: var(--fs-xs);
  font-weight: 700;
  background: var(--color-bg-alt);
  border-radius: 999px;
  padding: 3px;
  letter-spacing: 0.1em;
}

.lang-switch__btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 5px 12px;
  color: var(--color-text-muted);
  border-radius: 999px;
  transition: background var(--transition-base), color var(--transition-base);
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  min-width: 32px;
}

.lang-switch__btn:hover {
  color: var(--color-primary);
}

.lang-switch__btn.is-active {
  background: var(--color-primary);
  color: var(--color-white);
}

.lang-switch__btn.is-active:hover {
  color: var(--color-white);
}

/* 区切り文字は新デザインでは不要だが既存HTMLに残っていても見栄えを壊さない */
.lang-switch__sep {
  display: none;
}

/* モバイルメニュー内の言語切替 */
.mobile-menu .lang-switch {
  margin-left: 0;
  margin-top: 32px;
  justify-content: center;
  font-size: var(--fs-sm);
  align-self: center;
  background: var(--color-bg-alt);
  padding: 4px;
}

.mobile-menu .lang-switch__btn {
  padding: 8px 20px;
  min-width: 56px;
}

.mobile-menu__inner {
  display: flex;
  flex-direction: column;
}

.header__contact:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.header__contact-icon {
  width: 16px;
  height: 16px;
}

/* === モバイルメニューボタン === */
.header__menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: calc(var(--z-modal) + 1);
}

.header__menu-btn span {
  position: absolute;
  left: 10px;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), background var(--transition-base);
}

.header__menu-btn span:nth-child(1) { top: 14px; }
.header__menu-btn span:nth-child(2) { top: 21px; }
.header__menu-btn span:nth-child(3) { top: 28px; }

.header__menu-btn.is-open span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
  background: #fff;  /* 暗背景でも視認できるよう白に */
}
.header__menu-btn.is-open span:nth-child(2) {
  opacity: 0;
}
.header__menu-btn.is-open span:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
  background: #fff;  /* 暗背景でも視認できるよう白に */
}

/* === モバイルメニュー：閉じるボタン（JSで動的挿入） === */
.mobile-menu__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  padding: 0;
  z-index: calc(var(--z-modal) + 2);
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.mobile-menu__close:hover,
.mobile-menu__close:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.55);
  transform: rotate(90deg);
}

/* === モバイルメニュー === */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-bg-dark);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  overflow-y: auto;
}

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

.mobile-menu__inner {
  padding: calc(var(--header-height-sp) + 40px) 32px 60px;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  font-size: var(--fs-lg);
  font-weight: 500;
  transition: color var(--transition-base);
}

.mobile-menu__link:hover {
  color: var(--color-accent);          /* アイスブルーで暗背景でも視認性確保 */
}

.mobile-menu__link-en {
  font-family: var(--font-en);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mobile-menu__cta {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-menu__cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 16px;
  border-radius: 999px;
  font-weight: 600;
}

/* === フッター === */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-white);
  padding: 80px 0 32px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  transition: opacity var(--transition-base);
}

.footer__logo:hover {
  opacity: 0.75;
}

/* フッターは暗背景のためロゴを白く反転表示 */
.footer__logo-img {
  height: 44px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);  /* SVGを白に反転 */
}

.footer__address {
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

.footer__col-title {
  font-family: var(--font-en);
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  color: var(--color-accent);          /* アイスブルーで暗背景でも視認性確保 */
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 700;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__link {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--font-en);
}

.footer__legal {
  display: flex;
  gap: 24px;
}

.footer__legal a {
  font-size: var(--fs-xs);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

.footer__legal a:hover {
  color: var(--color-white);
}

/* === スクロールトップボタン === */
.scroll-top {
  position: fixed;
  right: 32px;
  bottom: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  z-index: 50;
  box-shadow: var(--shadow-md);
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-4px);
  background: var(--color-primary-dark);
}

/* === 共通：セクション === */
.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section__head {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section__label {
  font-family: var(--font-en);
  font-size: var(--fs-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 12px;
  display: inline-block;
}

.section__title {
  font-size: var(--fs-3xl);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.section__lead {
  font-size: var(--fs-md);
  color: var(--color-text-sub);
  max-width: 720px;
  margin: 0 auto;
  /* 行末の孤立文字を防ぎ、行のバランスを均等に */
  text-wrap: balance;
  line-break: strict;
}

/* === 共通：ボタン === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.05em;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn__arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* === パンくず === */
.breadcrumb {
  padding: 24px 0;
  background: var(--color-bg-alt);
}

/* page-headerなしで先頭に置く場合は固定ヘッダー分のオフセット */
.breadcrumb--top {
  margin-top: var(--header-height);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item:not(:last-child)::after {
  content: '/';
  color: var(--color-border);
}

.breadcrumb__link {
  color: var(--color-text-sub);
  transition: color var(--transition-base);
}

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

/* === ページヘッダー === */
.page-header {
  position: relative;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
  color: var(--color-white);
  margin-top: var(--header-height);
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0, 191, 166, 0.15) 0%, transparent 40%);
}

.page-header__inner {
  position: relative;
  text-align: center;
  z-index: 2;
}

.page-header__label {
  font-family: var(--font-en);
  font-size: var(--fs-sm);
  letter-spacing: 0.3em;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-header__title {
  font-size: var(--fs-4xl);
  font-weight: 700;
  line-height: 1.2;
}

/* 英字タイトル（詳細ページのpage-header用） */
.page-header__title--en {
  font-family: var(--font-en);
  font-size: var(--fs-5xl);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* スリム版page-header（詳細ページ向け） */
.page-header--slim {
  height: 180px;
}

.page-header--slim .page-header__label {
  font-size: var(--fs-xs);
  margin-bottom: 8px;
}

.page-header--slim .page-header__title--en {
  font-size: var(--fs-3xl);
}

/* === アニメーション === */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up--delay-1 { transition-delay: 0.1s; }
.fade-up--delay-2 { transition-delay: 0.2s; }
.fade-up--delay-3 { transition-delay: 0.3s; }
.fade-up--delay-4 { transition-delay: 0.4s; }