/* ============================================
   common.css - 長谷川工業株式会社
   ============================================ */

/* ── 変数 ───────────────── */
:root {
  --color-primary:   #0cb59b;   /* ティール */
  --color-navy:      #1b3a6b;   /* ロゴ紺 */
  --color-text:      #2a2a2a;
  --color-text-sub:  #666666;
  --color-bg:        #ffffff;
  --color-bg-light:  #f5f7f8;
  --color-border:    #d2d2d2;
  --color-bath:      #0cb59b;
  --color-toilet:    #e38619;
  --color-kitchen:   #1c79ba;
  --color-aircon:    #8e44ad;
  --font-sans:   YakuHanJP, "Noto Sans JP", sans-serif;
  --font-serif:  "Noto Serif JP", serif;
  --font-en:     "Overpass", sans-serif;
  --transition:  0.3s ease;
}

/* ── ベース ──────────────── */
body {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.8;
  letter-spacing: 0.07em;
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--color-text);
  transition: color var(--transition), opacity var(--transition);
}
a:hover { opacity: 0.75; }

/* ── ユーティリティ（メディアクエリ側で制御） ── */

/* ── ローディング ────────── */
#loading {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loading.hidden { opacity: 0; visibility: hidden; }
.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #e0e0e0;
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── コンテンツラップ ──────── */
#contents-wrap {
  opacity: 0;
  transition: opacity 1.2s ease;
}
#contents-wrap.fade-in { opacity: 1; }

/* ── ヘッダー共通 ─────────── */
#header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.4s, box-shadow 0.4s;
  /* SP: 白背景・固定高さ */
  height: 64px;
  background: rgba(255,255,255,0.97);
  box-shadow: 0 1px 12px rgba(0,0,0,0.08);
}
.header-logo {
  position: absolute;
  top: 50%; left: 16px;
  transform: translateY(-50%);
  z-index: 2;
}
.header-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
/* SPはロゴを小さく */
.header-logo img {
  height: 36px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.header-company-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-navy);
  letter-spacing: 0.06em;
  line-height: 1.25;
  white-space: nowrap;
}

/* ── お問い合わせ固定ボタン（右端縦書き）── */
.header-contact-btn {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 120px; right: 0;
  width: 38px;
  padding: 16px 0;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  border-radius: 4px 0 0 4px;
  z-index: 1001;
  transition: background-color var(--transition);
  writing-mode: vertical-lr;
}
.header-contact-btn:hover {
  background-color: var(--color-navy);
  color: #fff;
  opacity: 1;
}

/* ── ハンバーガー（モバイルのみ） ── */
.slide-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 50%; right: 18px;
  transform: translateY(-50%);
  z-index: 10000;
  padding: 8px;
  width: 40px; height: 40px;
}
.menu-trigger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
}
.menu-trigger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-navy);
  border-radius: 2px;
  transition: all 0.35s ease;
}
.menu-trigger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-trigger.active span:nth-child(2) { opacity: 0; }
.menu-trigger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── SPスライドメニュー ────── */
.slide-menu-nav {
  display: none;
  position: fixed;
  inset: 0;
  padding: 90px 0 60px;
  background-color: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  z-index: 9000;
  text-align: center;
  overflow-y: auto;
}
.slide-menu-nav.open { display: block; }
.slide-menu-nav .gnav { margin-bottom: 40px; }
.slide-menu-nav .gnav li { margin-bottom: 36px; }
.slide-menu-nav .gnav a {
  display: inline-block;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.1em;
}
.slide-menu-nav .gnav a:hover { color: var(--color-primary); opacity: 1; }
.slide-tel-area { margin-top: 10px; }
.slide-tel-area-num a {
  font-family: "Overpass", sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-navy);
  letter-spacing: 0.05em;
}
.slide-tel-area-text {
  font-size: 1.2rem;
  color: var(--color-text-sub);
  margin-top: 6px;
}

/* ── セクション共通タイトル ── */
.section-ttl {
  text-align: center;
  margin-bottom: 48px;
}
.section-ttl .eng {
  display: block;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--color-primary);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-ttl .jpn {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
}

/* ── 標準ボタン ──────────── */
.link-btn-std {
  display: inline-block;
  padding: 16px 40px;
  background-color: var(--color-primary);
  border-radius: 5px;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-align: center;
  transition: background-color var(--transition), transform var(--transition);
  border: 2px solid var(--color-primary);
}
.link-btn-std:hover {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  color: #fff;
  opacity: 1;
  transform: translateY(-2px);
}

/* ── ページトップ ─────────── */
.page-top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  border-radius: 50%;
  color: #fff;
  font-size: 1.4rem;
  position: absolute;
  top: -24px;
  right: 24px;
  transition: background-color var(--transition);
}
.page-top:hover {
  background-color: var(--color-navy);
  color: #fff;
  opacity: 1;
}

/* ── フッター ────────────── */
#footer {
  position: relative;
  background-color: var(--color-navy);
  color: #fff;
  padding: 60px 30px 0;
  margin-top: 80px;
}
.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding-bottom: 50px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

/* ── フッター ロゴエリア（参考サイト準拠：小さめ） ── */
.footer-logo-area-wrap {
  /* wrapがロゴ行＋住所を縦並びにまとめる */
}
.footer-logo-area {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
/* ロゴ本体：白反転でネイビー背景でも視認できるように */
.footer-logo {
  height: 46px;
  width: auto;
  display: block;
  flex-shrink: 0;
  /* ネイビー背景で沈まないよう白く反転 */
  filter: brightness(0) invert(1);
}
.footer-company-name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.08em;
  line-height: 1.3;
}
.footer-address {
  font-size: 1.3rem;
  line-height: 2.0;
  color: rgba(255,255,255,0.75);
}
.footer-address a { color: rgba(255,255,255,0.9); }
.footer-address a:hover { color: var(--color-primary); opacity: 1; }
.footer-nav-list li { margin-bottom: 10px; }
.footer-nav-list a {
  color: rgba(255,255,255,0.75);
  font-size: 1.4rem;
  padding-left: 16px;
  position: relative;
}
.footer-nav-list a::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}
.footer-nav-list a:hover { color: #fff; opacity: 1; }
.copyright {
  font-family: var(--font-en);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* ── フェードインアニメーション ── */
.fade-in-trigger {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in-trigger.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   PC Nav – 760px未満は非表示
   ================================================================ */
.header-nav-pc { display: none; }

/* ================================================================
   レスポンシブ：PC（760px以上）
   ================================================================ */
@media (min-width: 760px) {

  /* ハンバーガーは非表示 */
  .slide-menu-btn { display: none !important; }

  /* ヘッダー：PCは常に白・高さ230px・追従なし */
  #header {
    height: 230px;
    background: #fff;
    box-shadow: 0 1px 12px rgba(0,0,0,0.08);
    overflow: visible;
  }

  /* ロゴ：ヘッダー上部に配置 */
  .header-logo {
    position: absolute;
    top: 28px; left: 32px;
    transform: none;
  }
  .header-logo img { height: 46px; }
  .header-company-name {
    font-size: 2.2rem;
    color: var(--color-navy);
    text-shadow: none;
  }

  /* PC縦書きナビ（参考サイト準拠：大きめフォント・広め行間） */
  .header-nav-pc {
    display: flex;
    position: absolute;
    top: 0; right: 72px;
    align-items: flex-start;
    z-index: 10;
  }
  .header-nav-pc ul { display: flex; gap: 0; }
  .header-nav-pc li {
    position: relative;
    padding-top: 160px;
    margin-right: 40px;
    opacity: 0;
    transition: opacity 0.8s ease, padding-top 0.8s ease;
  }
  .header-nav-pc li:last-child { margin-right: 0; }
  .header-nav-pc li.is-visible {
    opacity: 1;
    padding-top: 30px;
  }
  .header-nav-pc li a {
    display: inline-block;
    writing-mode: vertical-lr;
    font-size: 1.7rem;
    font-weight: 600;
    color: var(--color-navy);
    text-shadow: none;
    line-height: 1.0;
    letter-spacing: 0.28em;
    position: relative;
    transition: color 0.2s;
  }
  .header-nav-pc li a:hover { color: var(--color-primary); opacity: 1; }
  .header-nav-pc li.active a { color: var(--color-primary); }
  .header-nav-pc li.active a::before {
    content: '';
    display: block;
    position: absolute;
    top: -25px; left: 50%;
    width: 1px;
    height: 0;
    background-color: var(--color-primary);
    animation: lineDown 0.7s ease 0.4s forwards;
  }
  @keyframes lineDown { to { height: 20px; } }

  /* お問い合わせ固定ボタン：ヘッダー/ヒーロー境界に配置 */
  .header-contact-btn { top: 180px; }

  /* アンカーリンク：固定ヘッダー分オフセット */
  #about, #service, #works, #contact, #faq, #access {
    scroll-margin-top: 240px;
  }

  /* フッター */
  .footer-inner {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
  }
}

@media (min-width: 1200px) {
  .header-nav-pc { right: 80px; }
}