/* ============================================================
   Header / Footer 共通コンポーネント用スタイル
   components/header.html・components/footer.html に対応。
   全ページで読み込む共通CSS。各ページ固有のCSSはページごとの
   styles.css 側に記述すること。
   ============================================================ */

/* =====================
   Global Header (fixed)
   ===================== */
.global-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    z-index: 100;
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    overflow: visible;
    padding: 0 16px 0 12px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

@media (min-width: 768px) {
    .global-header {
        height: 68px;
        padding: 0 24px 0 calc(max(0px, (100vw - 1200px) / 2) + 32px);
    }
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo a {
    display: flex;
    line-height: 0;
}

.logo img {
    width: 100px;
    display: block;
}

@media (min-width: 768px) {
    .logo img {
        width: 140px;
    }
}

/* Hamburger Button */
.hamburger-button {
    display: block;
    position: relative;
    margin-left: auto;
    flex-shrink: 0;
    z-index: 150;
    padding: 8px;
    background: none;
    border: none;
    color: #1a1a1a;
    cursor: pointer;
    transition: color 0.3s;
    visibility: visible;
    opacity: 1;
}

.hamburger-button:hover {
    color: #4b5563;
}

.hamburger-button .close-icon {
    display: none;
}

.hamburger-button.active .menu-icon {
    display: none;
}

.hamburger-button.active .close-icon {
    display: block;
}

@media (min-width: 1000px) {
    .hamburger-button {
        display: none;
    }
}

/* Desktop Navigation */
.desktop-nav {
    display: none;
    position: absolute;
    right: calc(max(0px, (100vw - 1200px) / 2) + 24px);
    z-index: 40;
    gap: 40px;
}

@media (max-width: 999px) {
    .desktop-nav {
        display: none !important;
    }
}

@media (min-width: 1000px) {
    .desktop-nav {
        display: flex;
        align-items: center;
    }
}

/* 1000px〜1199px：ロゴと重ならないようナビ全体を少し詰める */
@media (min-width: 1000px) and (max-width: 1199px) {
    .desktop-nav {
        gap: 22px;
    }
    .desktop-nav a {
        font-size: 16px;
    }
}

.desktop-nav a {
    font-family: 'M PLUS 1', sans-serif;
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 400;
    font-size: 20px;
    transition: color 0.3s;
    position: relative;
    padding-bottom: 4px;
}

/* オレンジのアンダーライン：左から右へスライドインするアニメーション */
.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2.5px;
    background-color: #f97316;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.3s ease;
}

.desktop-nav a:hover::after {
    transform: scaleX(1);
}

.desktop-nav a:hover {
    color: #1a1a1a;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100%;
    width: 276px;
    background-color: white;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    z-index: 600;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    will-change: transform; /* ブラウザ幅を動的に変えた際、再描画されず中身が空白/透明になる不具合の対策として専用の合成レイヤーを強制 */
    backface-visibility: hidden;
}

.mobile-menu.active {
    transform: translateX(0);
}

@media (min-width: 1000px) {
    .mobile-menu {
        display: none;
    }
}

.mobile-menu-close {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 8px;
    background: none;
    border: none;
    color: #1a1a1a;
    cursor: pointer;
    transition: color 0.3s;
}

.mobile-menu-close:hover {
    color: #4b5563;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 32px;
    margin-top: 14px;
}

.mobile-nav-link {
    font-family: 'M PLUS 1', sans-serif;
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 400;
    font-size: 20px;
    transition: color 0.3s;
}

.mobile-nav-link:hover {
    color: #4b5563;
}

/* =====================
   Desktop Dropdown (SERVICE)
   ===================== */
.desktop-nav__dropdown {
    position: relative;
}

.desktop-nav__dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
}


.desktop-nav__submenu {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding-top: 12px;
    background: transparent;
    list-style: none;
    margin: 0;
    z-index: 100;
    white-space: nowrap;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

/* サブメニューの白いボックス */
.desktop-nav__submenu::after {
    content: '';
    position: absolute;
    top: 12px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    z-index: -1;
}

.desktop-nav__dropdown:hover .desktop-nav__submenu {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.desktop-nav__submenu li a {
    display: block;
    padding: 10px 20px;
    font-family: 'M PLUS 1', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: #1a1a1a;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.desktop-nav__submenu li a::after {
    display: none;
}

.desktop-nav__submenu li a:hover {
    background: #fff7f3;
    color: #f97316;
}

/* サブサブメニュー（採用支援の右に4項目が展開） */
.desktop-nav__submenu-item {
    position: relative;
}

.desktop-nav__submenu-arrow {
    margin-left: 8px;
    opacity: 0.5;
}

.desktop-nav__subsubmenu {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 100%;
    padding-left: 12px;
    background: transparent;
    list-style: none;
    margin: 0;
    z-index: 100;
    white-space: nowrap;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.desktop-nav__subsubmenu::after {
    content: '';
    position: absolute;
    top: 0;
    left: 12px;
    right: 0;
    bottom: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    z-index: -1;
}

.desktop-nav__submenu-item:hover .desktop-nav__subsubmenu {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.desktop-nav__subsubmenu li a {
    display: block;
    padding: 10px 20px;
    font-family: 'M PLUS 1', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: #1a1a1a;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.desktop-nav__subsubmenu li a:hover {
    background: #fff7f3;
    color: #f97316;
}

/* =====================
   Mobile Accordion (SERVICE)
   ===================== */
.mobile-nav__accordion {
    display: flex;
    flex-direction: column;
}

.mobile-nav__accordion-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    background: none;
    border: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    text-align: left;
    padding: 0;
    /* mobile-nav-link と同じ見た目（-webkit-appearance未指定だとiOS Safari等でボタンのOS標準フォントが優先され小さく表示されるため明示的にリセット） */
    font-family: 'M PLUS 1', sans-serif;
    color: #1a1a1a;
    text-decoration: none;
    font-weight: 400;
    font-size: 20px;
    transition: color 0.3s;
}

.mobile-nav__accordion-trigger:hover {
    color: #4b5563;
}

.mobile-nav__submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.mobile-nav__submenu-inner {
    min-height: 0;
    overflow: hidden;
}

.mobile-nav__accordion.is-open > .mobile-nav__submenu {
    max-height: 600px; /* SERVICE配下の項目数が増えても収まるよう余裕を持たせた値 */
}

.mobile-nav__sublink {
    display: block;
    padding: 5px 8px 5px 16px;
    font-family: 'M PLUS 1', sans-serif;
    font-size: 16px;
    font-weight: 400;
    color: #1a1a1a;
    text-decoration: none;
    margin-top: 4px;
    transition: color 0.2s;
}

.mobile-nav__sublink:hover {
    color: #f97316;
}

/* ネストアコーディオン（採用支援のサブ項目）
   ※ グリッドの0fr/1frトリックを入れ子にすると一部モバイルブラウザで
     高さ計算が破綻するため、ネスト側だけ max-height 方式に切り替える */
.mobile-nav__submenu--nested {
    display: block;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.mobile-nav__accordion--nested.is-open > .mobile-nav__submenu--nested {
    max-height: 300px;
}

.mobile-nav__submenu--nested .mobile-nav__sublink {
    padding-left: 32px;
}

/* 採用支援：リンク＋開閉ボタンの行（SPでもテキスト自体がリンクとして機能） */
.mobile-nav__accordion-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.mobile-nav__accordion-link {
    flex: 1;
    min-width: 0;
}

.mobile-nav__accordion-trigger--icon {
    width: auto;
    justify-content: center;
    padding: 8px;
    flex-shrink: 0;
}

.mobile-nav__accordion-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.mobile-nav__accordion--nested.is-open .mobile-nav__accordion-icon {
    transform: rotate(180deg);
}

/* SERVICE（トップ階層）の矢印回転 */
.mobile-nav__accordion.is-open > .mobile-nav__accordion-trigger > .mobile-nav__accordion-icon {
    transform: rotate(180deg);
}


.mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 500;
}

.mobile-menu-overlay.active {
    display: block;
}

@media (min-width: 1000px) {
    .mobile-menu-overlay {
        display: none !important;
    }
}

/* ============================================================
 * Global Footer
 * footer.svg（viewBox 1920×780）のデザインを忠実に再現。
 * 構成：① IC Labロゴ → ③ フッターナビ（｜区切り） → ④ コピーライト
 * ※ 比較Biz認定パートナーバナーはOFFICEセクション（Access）へ移設済み
 * 背景はグレー（#8c8c8c）の通常ブロック要素として実装し、
 * clamp()／vwベースでレスポンシブに対応する。
 * ============================================================ */
.site-footer {
  position: relative;
  background-color: #8c8c8c;
  padding: 44px 20px 32px;
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* ① ロゴ */
.site-footer__logo-link {
  display: inline-block;
  line-height: 0;
  margin-bottom: clamp(24px, 8vw, 40px);
}

.site-footer__logo {
  display: block;
  width: clamp(112.5px, 28.5vw, 150px);
  height: auto;
}

/* ③ フッターナビゲーション */
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px clamp(14px, 4vw, 32px);
  margin-bottom: clamp(18px, 5vw, 28px);
}

.site-footer__nav-link {
  color: #fff;
  font-size: clamp(13px, 3.4vw, 16px);
  font-weight: 500;
  text-decoration: none;
  line-height: 1.4;
  letter-spacing: 0.02em;
  transition: opacity 0.25s ease;
}

.site-footer__nav-link:hover {
  opacity: 0.75;
  text-decoration: none;
}

.site-footer__nav-sep {
  color: rgba(255, 255, 255, 0.5);
  font-size: clamp(13px, 3.4vw, 16px);
  user-select: none;
}

@media (max-width: 599px) {
  .site-footer__logo {
    width: 100px;
  }
  .site-footer__nav {
    gap: 24px;
  }
  .site-footer__nav-sep {
    display: none;
  }
}

/* ④ コピーライト */
.site-footer__copyright {
  font-family: 'M PLUS 1', sans-serif;
  color: #fff;
  font-size: clamp(11px, 2.8vw, 13px);
  letter-spacing: 0.03em;
}

@media (min-width: 768px) {
  .site-footer {
    padding: 64px 40px 48px;
  }
}