/* =============================================
   common.css
   リセットCSS・CSS変数・サイト全体の共通スタイル
   （フォント・ヘッダー・フッター・基本ボタン等）
============================================= */

/* =============================================
   ROOT FONT SIZE
============================================= */
html {
  font-size: 100%; /* = 16px（ブラウザ標準）。1rem = 16px 基準 */
  scroll-behavior: smooth;
}

/* =============================================
   CSS VARIABLES
============================================= */
:root {
  /* Colors */
  --accent:       #005BAC;
  --accent-dark:  #004080;
  --accent-light: #e8f1fa;
  --black:        #111111;
  --gray-dark:    #333333;
  --gray-mid:     #666666;
  --gray-light:   #999999;
  --gray-bg:      #f5f6f8;
  --border:       #e0e4ea;
  --white:        #ffffff;

  /* Typography */
  --font-jp:          'Noto Sans JP', sans-serif;
  --font-en:          'Barlow Condensed', sans-serif;
  --font-size-base:   1rem;
  --line-height-base: 1.7;
  --spacing:          0.05em;   /* サイト全体の基本文字間隔 */

  /* Spacing / Layout */
  --section-padding: 6.25rem;  /* 100px */
  --section-margin: 6.25rem; 
  --container-max:   80rem;  /* 1080px */
  --container-pad:   2.5rem;   /* 40px */

  /* Breakpoint（参照用メモ） */
  /* --bp-mobile: 768px; */
}

/* =============================================
   RESET
============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  letter-spacing: var(--spacing);
}

body {
  font-family: var(--font-jp);
  color: var(--black);
  background: var(--white);
  line-height: var(--line-height-base);
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* =============================================
   LAYOUT UTILITIES
============================================= */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* =============================================
   TYPOGRAPHY UTILITIES
============================================= */
.section-label {
  font-family: var(--font-en);
  font-size: 0.6875rem;    /* 11px */
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;  /* 12px */
}

.section-title {
  font-size: clamp(1.375rem, 3.5vw, 2rem); /* 22px – 32px */
  font-weight: 700;
  line-height: 1.4;
  color: var(--black);
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 0.9375rem;
  color: var(--gray-mid);
  line-height: 1.9;
  margin-top: 1rem;
}

/* =============================================
   BUTTONS
============================================= */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-jp);
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 1rem 2.25rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  letter-spacing: 0.05em;
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
  border-radius: 6px;
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}
.btn-primary svg {
  flex-shrink: 0;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-jp);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}
.btn-outline:hover {
  background: var(--accent);
  color: var(--white);
}

/* ダーク背景用ホワイトアウトラインボタン */
.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.875rem 1.75rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}
.btn-white:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.6);
}

/* =============================================
   HEADER
   【初期】透明・全幅・白テキスト
   【スクロール後 .is-scrolled】白背景・カプセル型・縮幅・浮遊影
============================================= */

/* ── ラッパー：常に fixed で上部固定 ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0;
  transition:
    padding    0.35s cubic-bezier(0.4, 0, 0.2, 1),
    background 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── カプセル本体 ── */
.header__bar {
  max-width: 100%;
  margin: 0 auto;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: blur(0px);
  transition:
    max-width       0.35s cubic-bezier(0.4, 0, 0.2, 1),
    background      0.35s cubic-bezier(0.4, 0, 0.2, 1),
    border-radius   0.35s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow      0.35s cubic-bezier(0.4, 0, 0.2, 1),
    backdrop-filter 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── スクロール後 .is-scrolled ── */
.header.is-scrolled {
  padding: 0.75rem 1.5rem;
}

.header.is-scrolled .header__bar {
  max-width: 90%;
  background: rgba(255, 255, 255, 0.97);
  border-radius: 999px;
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.10),
    0 1px  6px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(12px);
}
.header__nav a.is-current {
  color: var(--white);
}
.header.is-scrolled .header__nav a.is-current {
  color: var(--accent);
}
/* ── インナーレイアウト ── */
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3rem;
  transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.header.is-scrolled .header__inner {
  height: 3.25rem;
}

/* ── ロゴ ── */
.header__logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.header__logo-en {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1;
  transition: color 0.35s ease;
}

.header__logo-en span {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.35s ease;
}

.header__logo-jp {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
  transition: color 0.35s ease;
}

/* スクロール後：ロゴを黒系に */
.header.is-scrolled .header__logo-en      { color: var(--black); }
.header.is-scrolled .header__logo-en span { color: var(--accent); }
.header.is-scrolled .header__logo-jp      { color: var(--gray-mid); }

/* ── ナビ ── */
.header__nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;              /* 28px */
}

.header__nav a {
  font-size: 1.1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  letter-spacing: 0.04em;
  transition: color 0.3s;
  white-space: nowrap;
  position: relative;
}

/* ホバー下線エフェクト */
.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: currentColor;
  transition: width 0.25s ease;
}
.header__nav a:hover::after { width: 100%; }
.header__nav a:hover         { color: rgba(255, 255, 255, 1); }

/* スクロール後：ナビを黒系に */
.header.is-scrolled .header__nav a       { color: var(--gray-dark); }
.header.is-scrolled .header__nav a:hover { color: var(--accent); }

/* ── ヘッダーCTAボタン ── */
.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;            
  font-size: 1rem;
  font-weight: 700;
  padding: 0.5625rem 1.25rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
  border-radius: 999px;
  transition:
    background   0.3s ease,
    color        0.3s ease,
    border-color 0.3s ease,
    box-shadow   0.2s ease;
  background: transparent;
  color: rgba(255, 255, 255, 0.95);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}

.header__cta:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.9);
}

/* スクロール後：アクセントカラー塗りつぶし */
.header.is-scrolled .header__cta {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  box-shadow: 0 2px 10px rgba(0, 91, 172, 0.25);
}

.header.is-scrolled .header__cta:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

/* =============================================
   FOOTER
============================================= */
.footer {
  background: #0d0d0d;
  padding: 4rem 0 2rem;      /* 64px 0 32px */
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3.75rem;              /* 60px */
  margin-bottom: 3rem;       /* 48px */
}

.footer__brand-name {
  font-family: var(--font-en);
  font-size: 1.25rem;        /* 20px */
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--white);
  margin-bottom: 0.25rem;    /* 4px */
}

.footer__brand-name span {
  color: var(--accent);
}

.footer__brand-jp {
  font-size: 0.6875rem;      /* 11px */
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;       /* 16px */
}

.footer__brand-desc {
  font-size: 0.8125rem;      /* 13px */
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
}

.footer__nav-title {
  font-size: 0.6875rem;      /* 11px */
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  margin-bottom: 1rem;       /* 16px */
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;             /* 10px */
}

.footer__nav-list,.footer__nav-list a {
  font-size: 0.8125rem;      /* 13px */
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s;
}
.footer__nav-list a:hover {
  color: var(--white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;       /* 24px */
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__copy {
  font-size: 0.75rem;        /* 12px */
  color: rgba(255, 255, 255, 0.5);
}

.footer__links {
  display: flex;
  gap: 1.5rem;               /* 24px */
}

.footer__links a {
  font-size: 0.75rem;        /* 12px */
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s;
}
.footer__links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* =============================================
   MOBILE FIXED CTA
============================================= */
.mobile-fixed-cta {
  position: fixed;
  bottom: -100px;
  left: 50%;
  width: 100%;
  z-index: 9999;
  transform: translateX(-50%);
  transition: bottom 0.4s ease, opacity 0.4s ease; /* スムーズに動かす */
  opacity: 0;
  background: var(--accent);
  color: var(--white);
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.9rem;
  letter-spacing: 0.08em;
  border-top: 3px solid var(--accent-dark);

}

.pc-none{
  display: none;
}
.phone-none{
  display:block;
}

/* 背景グリッド装飾 */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 3rem 3rem;
  opacity: 0.45;
  pointer-events: none;
  z-index:-1;
}
/* =============================================
   RESPONSIVE（768px 以下）
============================================= */
@media (max-width: 768px) {
  .header.is-scrolled .header__bar {
    /* スクロール前の状態に戻す設定 */
    max-width: 100%;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
  }
  .header{
    top:1rem;
  }
  .header__logo-en{
    font-size:1.2rem;
  }
  .header__logo-jp{
    font-size: 0.52rem;
  }
  .container {
    padding: 0 1.25rem;      /* 0 20px */
  }

  /* Header */
  .header__nav { display: none; }
  .header__cta { display: none; }

  .header.is-scrolled {
    padding: 0.5rem 0.75rem; /* 8px 12px */
  }

  .header.is-scrolled .header__bar {
    max-width: 100%;
    border-radius: 1rem;     /* 16px */
  }

  .header__inner {
    padding: 0 1.25rem;      /* 0 20px */
  }

  /* Footer */
  .footer__inner  { grid-template-columns: 1fr; gap: 2rem; }       /* 32px */
  .footer__bottom { flex-direction: column; gap: 0.75rem; text-align: center; } /* 12px */
  .footer         { padding-bottom: 5rem; } /* 80px：スマホ固定CTAに隠れないよう */

  .mobile-fixed-cta.show {
  bottom:0;
  opacity: 1;
}

  .pc-none{
    display: inline-block;
  }
  .phone-none{
    display:none;
  }
}

/* =============================================
   ① ハンバーガーボタン
   円形・白背景（ccube.co.jp参考）
   768px以下のみ表示
============================================= */
.hamburger {
  display: none; /* PCでは非表示 */
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 2.625rem;   /* 42px */
  height: 2.625rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: none;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
  padding: 0;
  flex-shrink: 0;
  transition: background 0.25s, box-shadow 0.25s;
  z-index: 200;
}

.hamburger:hover {
  background: #fff;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.22);
}

.hamburger__line {
  display: block;
  width: 1.125rem;  /* 18px */
  height: 1.5px;
  background: var(--black);
  border-radius: 2px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  transform-origin: center;
}

/* 開いた状態 */
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* =============================================
   ① SPナビゲーション
============================================= */
.sp-nav {
  display: none; /* JS開閉で管理 */
  position: fixed;
  inset: 0;
  z-index: 150;
  pointer-events: none;
}

/* オーバーレイ背景 */
.sp-nav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 20, 40, 0.55);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.35s ease;
}

/* パネル本体 */
.sp-nav__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(80vw, 22rem);
  height: 100%;
  background: var(--white);
  box-shadow: -8px 0 40px rgba(0, 0, 0, 0.18);
  padding: 5.5rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  transform: translateX(100%);
  transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

/* ── 開いた状態 (.is-open) ── */
.sp-nav.is-open {
  pointer-events: auto;
}
.sp-nav.is-open .sp-nav__overlay {
  opacity: 1;
}
.sp-nav.is-open .sp-nav__panel {
  transform: translateX(0);
}

/* リスト */
.sp-nav__list {
  display: flex;
  flex-direction: column;
  margin-bottom: 2rem;
}

.sp-nav__link {
  display: block;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--gray-dark);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.04em;
  transition: color 0.2s, padding-left 0.2s;
}
.sp-nav__link:hover {
  color: var(--accent);
  padding-left: 0.5rem;
}

/* CTAボタン */
.sp-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--white);
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1.25rem;
  transition: background 0.2s;
  letter-spacing: 0.05em;
}
.sp-nav__cta:hover {
  background: var(--accent-dark);
}

/* 電話番号 */
.sp-nav__tel {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--gray-mid);
  justify-content: center;
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* =============================================
   responsive: ハンバーガー表示制御
============================================= */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  .sp-nav {
    display: block;
  }
}