@charset "UTF-8";

/* ==========================================================================
   Footer Component
   - CTA: アーティスティックな名刺（Business Card）デザイン（濃紺基調）
   - Main: 澄んだディープネイビー（深みと知性のある上品なダークトーン）
   ========================================================================== */

.footer {
  --font-japanese: var(--font-sans);
  --font-serif-footer: var(--font-sans);
  --font-heading-footer: var(--font-outfit, "Outfit", sans-serif);
  --font-outfit: var(--font-english);
  --color-primary: #ffffff;
  --color-secondary: rgba(255, 255, 255, 0.8);
  
  /* ページ全体と調和する上品なディープネイビー（暗すぎず青みが綺麗に見えるトーン） */
  --color-bg-main: #0f2744;
  --color-bg-sub: #f5f2eb; /* 上品なエディトリアルペーパー調 */
  --color-bg-bottom: #091b30;
  --color-footer-navy: #07172b;
  --color-footer-navy-mid: #0b2f56;
  --color-footer-gold: #c5a880;
  --color-footer-gold-light: #e2d2bc;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  width: 100%;
  background-color: var(--color-bg-main);
  font-size: 14px;
  position: relative;
  border-top: none;
  color: var(--color-primary);
  font-family: var(--font-japanese);
  transition: var(--transition-smooth);
}

.footer * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.footer a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

.footer ul {
  list-style: none;
}

.footer svg {
  display: inline-block;
  vertical-align: middle;
}

/* ==========================================================================
   1. Footer Main - 上品なディープネイビー（暗すぎず知的なダークトーン）
   ========================================================================== */
.footer__main {
  background-color: var(--color-bg-main, #0f2744);
  color: #ffffff;
  border-top: none;
}

.footer__main-inner {
  max-width: var(--layout-max-width, 1480px);
  margin: 0 auto;
  padding: 56px var(--container-gutter, 16px) 48px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
  align-items: flex-start;
}

/* ブランド・会社ロゴエリア */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__logo-link {
  display: inline-block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #ffffff;
  line-height: 1.4;
  transition: opacity var(--transition-fast);
}

.footer__logo-link:hover {
  opacity: 0.85;
}

.footer__logo-img {
  display: block;
  max-width: 220px;
  width: 100%;
  height: auto;
  aspect-ratio: 285 / 29;
  filter: brightness(0) invert(1);
}

.footer__tagline {
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
  letter-spacing: 0.03em;
}

/* 4カラムナビゲーション */
.footer__nav-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  width: 100%;
}

.footer__nav-column {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ナビゲーション見出し（ヘッダーメニューと同様の英語＋日本語二段表記） */
.footer__nav-title {
  margin-bottom: 2px;
}

.footer__nav-title a,
.footer__nav-title-wrap,
.footer__nav-column .footer__nav-title a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  text-decoration: none;
  border-bottom: 1.5px solid rgba(197, 168, 128, 0.4);
  padding-bottom: 8px;
  position: relative;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.footer__nav-title-wrap {
  cursor: default;
}

.footer__nav-en {
  font-family: var(--font-heading-footer);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 1.5px;
  line-height: 1.2;
  color: #ffffff;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.footer__nav-ja {
  font-family: var(--font-serif-footer);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.8px;
  line-height: 1.2;
  color: var(--color-footer-gold, #c5a880);
  transition: color var(--transition-fast);
}

.footer__nav-title a:hover {
  border-bottom-color: var(--color-footer-gold, #c5a880);
}

.footer__nav-title a:hover .footer__nav-en {
  color: var(--color-footer-gold-light, #e2d2bc) !important;
}

.footer__nav-title a:hover .footer__nav-ja {
  color: var(--color-footer-gold-light, #e2d2bc) !important;
}

/* リンク一覧 */
.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__nav-list a {
  font-size: 13.5px !important;
  font-weight: 400 !important;
  color: rgba(255, 255, 255, 0.75) !important;
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
  line-height: 1.4;
  position: relative;
}

.footer__nav-list a:hover {
  color: #ffffff !important;
  padding-left: 6px;
}

/* ==========================================================================
   3. Footer Bottom（Mainと同じ背景色に統一）
   ========================================================================== */
.footer__bottom {
  background-color: var(--color-bg-main, #0f2744);
  border-top: none;
}

.footer__bottom-inner {
  max-width: var(--layout-max-width, 1480px);
  margin: 0 auto;
  padding: 16px var(--container-gutter, 16px);
  display: flex;
  justify-content: center;
  align-items: center;
}

.footer__copyright {
  font-size: 12.5px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  letter-spacing: 0.5px;
}

.copyright-year {
  font-family: var(--font-outfit);
}

/* ==========================================================================
   3. レスポンシブ対応
   ========================================================================== */
@media (max-width: 1024px) {
  .footer__main-inner {
    padding: 40px var(--container-gutter, 12px);
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer__brand {
    max-width: 100%;
    width: 100%;
  }

  .footer__nav-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 24px;
  }
}

@media (max-width: 640px) {
  .footer__main-inner {
    padding: 32px var(--container-gutter, 12px) 24px;
  }

  .footer__nav-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}