/* ==========================================================================
   DEMAIN — Contact Page（page-contact.php）専用CSS — Phase 4
   ========================================================================== */
/*
   Phase 4.1 修正メモ：
   このファイルは元々「style.css のtokens / shared componentsを使用する」
   前提で書かれていたが、wordpress-package/style.css はSWELL子テーマの
   定義ヘッダーのみを保持するファイルであり、実際には --navy 等のCSS
   custom properties も .site-header 等の共通コンポーネントCSSも含んで
   いない（Phase 1〜3-2の home.css / company.css / career-check.css 等と
   同じ構成）。そのため、Contactが依存するtokens・reset・buttons・
   header・footer を、company.css（同じくHeader/Footerを自前で持つ
   ページ）を参照元として、このファイル側に統合した。

   スコープ方針は他ページのCSSと同じく、すべてのセレクタに
   `body.demain-contact` を前置している（functions.php側でpage-contact.php
   表示時のみ<body>にdemain-contactクラスを付与）。これにより、SWELL側の
   `.btn` のような一般的なクラス名と衝突してもContactページ内でしか
   効かず、既存のFIX済み他ページへは一切影響しない。

   例外的にスコープしていないのは `html { scroll-behavior: smooth; }` の
   1行のみ（他ページのCSSと同じ理由：html要素自体にクラスを持たせて
   いないため。このファイルはpage-contact.php表示時にしか読み込まれない
   ため実質的に他ページへ影響しない）。

   Contact固有のフォーム・入口選択・成功画面等（ct- プレフィックス）は
   元々このファイルにあったルールをそのまま維持し、`body.demain-contact`
   を前置しただけで、デザイン・値は一切変更していない。
*/

/* ==========================================================================
   Base / Tokens
   ========================================================================== */
body.demain-contact {
  --navy: #0F1C2E;
  --navy-dark: #081422;
  --gold: #C6A86A;
  --off-white: #F7F5F0;
  --white: #FFFFFF;
  --text-dark: #20252B;

  --serif: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --sans: 'Noto Sans JP', -apple-system, 'Hiragino Kaku Gothic ProN', sans-serif;

  --header-h: 84px;
  --radius: 2px;
  --ease: cubic-bezier(.25, .1, .25, 1);
}

body.demain-contact,
body.demain-contact * { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.demain-contact {
  font-family: var(--sans);
  color: var(--text-dark);
  background: var(--off-white);
  font-weight: 300;
  line-height: 1.85;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.demain-contact a { text-decoration: none; color: inherit; }
body.demain-contact button { font-family: inherit; background: none; border: none; cursor: pointer; }
body.demain-contact ul { list-style: none; }
body.demain-contact img { max-width: 100%; display: block; }

/* --------------------------------------------------------------------------
   Focus visibility (keyboard navigation)
   -------------------------------------------------------------------------- */
body.demain-contact a:focus-visible,
body.demain-contact button:focus-visible,
body.demain-contact input:focus-visible,
body.demain-contact textarea:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ==========================================================================
   Reveal / fade-up
   ========================================================================== */
body.demain-contact .fade-up {
  opacity: 1;
  transform: none;
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
body.demain-contact .fade-up.fade-up-hidden {
  opacity: 0;
  transform: translateY(24px);
}
body.demain-contact .fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Buttons / Links
   ========================================================================== */
body.demain-contact .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
  white-space: nowrap;
}
body.demain-contact .btn span { transition: transform .3s var(--ease); display: inline-block; }
body.demain-contact .btn:hover span { transform: translateX(4px); }

body.demain-contact .btn-gold {
  background: var(--gold);
  color: var(--navy-dark);
}
body.demain-contact .btn-gold:hover { background: #d4bb84; }

body.demain-contact .btn-outline-gold {
  border-color: var(--gold);
  color: var(--gold);
  background: transparent;
}
body.demain-contact .btn-outline-gold:hover { background: rgba(198, 168, 106, 0.1); }

body.demain-contact .btn-small { padding: 10px 22px; font-size: 0.78rem; }

body.demain-contact .link-arrow {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: inherit;
  padding-bottom: 3px;
}
body.demain-contact .link-arrow::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
body.demain-contact .link-arrow:hover::after { transform: scaleX(1); }
body.demain-contact .link-arrow span { transition: transform .3s var(--ease); display: inline-block; }
body.demain-contact .link-arrow:hover span { transform: translateX(4px); }

body.demain-contact .eyebrow {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 18px;
}

/* ==========================================================================
   Header
   ========================================================================== */
body.demain-contact .site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(15, 28, 46, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(198, 168, 106, 0.15);
  transition: background .4s var(--ease);
}

/* WP admin bar collision guard — position:fixed要素はbodyのmargin-topの
   影響を受けないため、管理画面ログイン中はAdmin Barの高さぶんだけ手動で
   オフセットしないとヘッダーがAdmin Barの下に隠れる（他ページのCSSと
   同じ対応）。 */
body.admin-bar.demain-contact .site-header { top: 32px; }
body.admin-bar.demain-contact .mobile-nav { top: calc(var(--header-h) + 32px); }
@media screen and (max-width: 782px) {
  body.admin-bar.demain-contact .site-header { top: 46px; }
  body.admin-bar.demain-contact .mobile-nav { top: calc(var(--header-h) + 46px); }
}

body.demain-contact .header-inner {
  max-width: 1320px;
  margin: 0 auto;
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

body.demain-contact .logo {
  font-family: var(--serif);
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  color: var(--white);
  font-weight: 500;
}

body.demain-contact .main-nav { display: flex; gap: 44px; }
body.demain-contact .main-nav a {
  color: rgba(247, 245, 240, 0.85);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  position: relative;
  padding-bottom: 4px;
}
body.demain-contact .main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
body.demain-contact .main-nav a:hover::after { transform: scaleX(1); }

body.demain-contact .header-right { display: flex; align-items: center; gap: 24px; }

body.demain-contact .hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 22px;
}
body.demain-contact .hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--off-white);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
body.demain-contact .hamburger.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
body.demain-contact .hamburger.active span:nth-child(2) { opacity: 0; }
body.demain-contact .hamburger.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

body.demain-contact .mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--navy-dark);
  border-top: 1px solid rgba(198, 168, 106, 0.15);
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease);
}
body.demain-contact .mobile-nav.open { max-height: 420px; }
body.demain-contact .mobile-nav a {
  padding: 18px 32px;
  border-bottom: 1px solid rgba(247, 245, 240, 0.06);
  color: var(--off-white);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}
body.demain-contact .mobile-nav .btn { margin: 20px 32px; align-self: flex-start; }

/* ==========================================================================
   Footer
   ========================================================================== */
body.demain-contact .site-footer { background: var(--navy-dark); border-top: 1px solid rgba(247, 245, 240, 0.08); padding: 60px 40px 30px; }
body.demain-contact .footer-top {
  max-width: 1320px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
  padding-bottom: 40px;
}
body.demain-contact .footer-logo { color: var(--off-white); }
body.demain-contact .footer-nav { display: flex; gap: 30px; flex-wrap: wrap; }
body.demain-contact .footer-nav a { font-size: 0.78rem; color: rgba(247, 245, 240, 0.65); letter-spacing: 0.05em; }
body.demain-contact .footer-nav a:hover { color: var(--gold); }
body.demain-contact .footer-bottom {
  max-width: 1320px;
  margin: 0 auto;
  padding-top: 30px;
  border-top: 1px solid rgba(247, 245, 240, 0.08);
}
body.demain-contact .footer-bottom p { font-size: 0.72rem; color: rgba(247, 245, 240, 0.4); }

/* ==========================================================================
   Contact — Hero
   ========================================================================== */
body.demain-contact .ct-hero {
  position: relative;
  padding: calc(var(--header-h) + 110px) 40px 100px;
  background: var(--navy-dark);
  text-align: center;
  overflow: hidden;
}
body.demain-contact .ct-hero::before {
  content: 'CONTACT';
  position: absolute;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 11vw;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(247, 245, 240, 0.025);
  left: -0.03em;
  bottom: -0.14em;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}
body.demain-contact .ct-hero-inner { position: relative; max-width: 640px; margin: 0 auto; }
body.demain-contact .ct-hero .eyebrow { justify-content: center; }
body.demain-contact .ct-hero-title {
  font-family: var(--serif);
  color: var(--white);
  font-weight: 500;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  line-height: 1.6;
  margin-bottom: 30px;
}
body.demain-contact .ct-hero-desc {
  color: rgba(247, 245, 240, 0.8);
  font-size: 0.92rem;
  line-height: 2;
  margin-bottom: 14px;
}
body.demain-contact .ct-hero-desc:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Entry selection
   -------------------------------------------------------------------------- */
body.demain-contact .ct-entry { padding: 100px 40px; background: var(--off-white); }
body.demain-contact .ct-entry-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
body.demain-contact .ct-entry-item {
  padding: 0 60px;
  border-left: 1px solid rgba(15, 28, 46, 0.12);
}
body.demain-contact .ct-entry-item:first-child { border-left: none; padding-left: 4px; }
body.demain-contact .ct-entry-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  color: var(--text-dark);
  margin-bottom: 20px;
}
body.demain-contact .ct-entry-desc {
  font-size: 0.9rem;
  color: #4a4f56;
  line-height: 1.95;
  margin-bottom: 30px;
}

/* --------------------------------------------------------------------------
   Forms — shell / switch
   -------------------------------------------------------------------------- */
body.demain-contact .ct-forms { padding: 100px 40px; background: var(--white); }
body.demain-contact .ct-forms[hidden] { display: none; }
body.demain-contact .ct-forms-inner { max-width: 680px; margin: 0 auto; }

body.demain-contact .ct-switch {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 22px;
  margin-bottom: 64px;
}
body.demain-contact .ct-switch button {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: #9a9fa6;
  padding-bottom: 6px;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
body.demain-contact .ct-switch button:hover { color: var(--navy); }
body.demain-contact .ct-switch button.is-active { color: var(--navy); border-color: var(--gold); }
body.demain-contact .ct-switch-sep { color: rgba(15, 28, 46, 0.2); font-size: 0.8rem; }

body.demain-contact .ct-panel[hidden] { display: none; }
body.demain-contact .ct-panel-head { text-align: center; margin-bottom: 48px; }
body.demain-contact .ct-panel-head .eyebrow { justify-content: center; }
body.demain-contact .ct-panel-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  color: var(--text-dark);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Source-aware intro note
   -------------------------------------------------------------------------- */
body.demain-contact .ct-source-note {
  margin: 0 0 48px;
  padding: 22px 26px;
  border-left: 2px solid var(--gold);
  background: rgba(198, 168, 106, 0.06);
}
body.demain-contact .ct-source-note[hidden] { display: none; }
body.demain-contact .ct-source-note-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--navy);
  margin-bottom: 8px;
}
body.demain-contact .ct-source-note-desc { font-size: 0.82rem; color: #4a4f56; line-height: 1.8; }

/* --------------------------------------------------------------------------
   Form status (validation summary — screen-reader + visible)
   -------------------------------------------------------------------------- */
body.demain-contact .ct-form-status { font-size: 0.85rem; color: #b3492f; margin-bottom: 8px; }
body.demain-contact .ct-form-status:empty { display: none; margin: 0; }

/* --------------------------------------------------------------------------
   Fields
   -------------------------------------------------------------------------- */
body.demain-contact .ct-field { margin-bottom: 38px; border: none; padding: 0; }
body.demain-contact .ct-label {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--text-dark);
  margin-bottom: 14px;
}
body.demain-contact .ct-required, body.demain-contact .ct-optional {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}
body.demain-contact .ct-required { color: var(--gold); }
body.demain-contact .ct-optional { color: #9a9fa6; }
body.demain-contact .ct-optional-hint { font-size: 0.75rem; color: #9a9fa6; }

body.demain-contact .ct-input, body.demain-contact .ct-textarea {
  display: block;
  width: 100%;
  padding: 12px 2px;
  border: none;
  border-bottom: 1px solid rgba(15, 28, 46, 0.2);
  border-radius: 0;
  background: transparent;
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--text-dark);
  transition: border-color 0.3s var(--ease);
}
body.demain-contact .ct-input::placeholder, body.demain-contact .ct-textarea::placeholder { color: #a7abb2; }
body.demain-contact .ct-input:focus, body.demain-contact .ct-textarea:focus { outline: none; border-color: var(--gold); }
body.demain-contact .ct-input[aria-invalid="true"], body.demain-contact .ct-textarea[aria-invalid="true"] { border-color: #b3492f; }
body.demain-contact .ct-textarea { min-height: 130px; line-height: 1.85; resize: vertical; }

body.demain-contact .ct-error { margin-top: 8px; font-size: 0.78rem; color: #b3492f; line-height: 1.6; }
body.demain-contact .ct-error:empty { display: none; margin: 0; }
body.demain-contact .ct-error:not(:empty)::before { content: '※ '; }

/* --------------------------------------------------------------------------
   Choice chips (checkbox / radio groups)
   -------------------------------------------------------------------------- */
body.demain-contact .ct-choice-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
}
body.demain-contact .ct-choice-group.single-col { grid-template-columns: 1fr; }

body.demain-contact .ct-choice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid rgba(15, 28, 46, 0.15);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
body.demain-contact .ct-choice:hover { border-color: var(--gold); }
body.demain-contact .ct-choice.is-selected { border-color: var(--gold); background: rgba(198, 168, 106, 0.06); }

body.demain-contact .ct-choice input[type="checkbox"],
body.demain-contact .ct-choice input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  position: relative;
  border: 1px solid rgba(15, 28, 46, 0.35);
  background: var(--white);
}
body.demain-contact .ct-choice input[type="checkbox"] { border-radius: 2px; }
body.demain-contact .ct-choice input[type="radio"] { border-radius: 50%; }
body.demain-contact .ct-choice input:checked { border-color: var(--gold); }
body.demain-contact .ct-choice input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px; top: 1px;
  width: 4px; height: 8px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(40deg);
}
body.demain-contact .ct-choice input[type="radio"]:checked::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--gold);
}
body.demain-contact .ct-choice span { font-size: 0.85rem; color: var(--text-dark); line-height: 1.5; }

/* --------------------------------------------------------------------------
   Privacy consent
   -------------------------------------------------------------------------- */
body.demain-contact .ct-privacy {
  margin: 46px 0 40px;
  padding-top: 36px;
  border-top: 1px solid rgba(15, 28, 46, 0.1);
}
body.demain-contact .ct-privacy-link { font-size: 0.8rem; margin-bottom: 20px; }
body.demain-contact .ct-check-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}
body.demain-contact .ct-check-row input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  flex-shrink: 0;
  position: relative;
  border: 1px solid rgba(15, 28, 46, 0.35);
  border-radius: 2px;
  background: var(--white);
}
body.demain-contact .ct-check-row input:checked { border-color: var(--gold); }
body.demain-contact .ct-check-row input[aria-invalid="true"] { border-color: #b3492f; }
body.demain-contact .ct-check-row input:checked::after {
  content: '';
  position: absolute;
  left: 4px; top: 1px;
  width: 4px; height: 8px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(40deg);
}
body.demain-contact .ct-check-row span { font-size: 0.85rem; color: var(--text-dark); line-height: 1.6; }

/* --------------------------------------------------------------------------
   Submit
   -------------------------------------------------------------------------- */
body.demain-contact .ct-submit-row { text-align: center; margin-top: 8px; }

/* --------------------------------------------------------------------------
   Success states
   -------------------------------------------------------------------------- */
body.demain-contact .ct-success[hidden] { display: none; }
body.demain-contact .ct-success { padding: 150px 40px; background: var(--off-white); text-align: center; }
body.demain-contact .ct-success-inner { max-width: 560px; margin: 0 auto; }
body.demain-contact .ct-success .eyebrow { justify-content: center; }
body.demain-contact .ct-success-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  color: var(--text-dark);
  line-height: 1.6;
  margin-bottom: 30px;
}
body.demain-contact .ct-success-title:focus { outline: none; }
body.demain-contact .ct-success-body { margin-bottom: 46px; }
body.demain-contact .ct-success-body p {
  font-size: 0.92rem;
  color: #3a3f46;
  line-height: 2;
  margin-bottom: 22px;
}
body.demain-contact .ct-success-body p:last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Honeypot (spam trap — Phase 4)
   Kept out of view without display:none/visibility:hidden so it stays
   technically focusable-safe (tabindex="-1" removes it from tab order and
   aria-hidden removes it from the accessibility tree; real visitors never
   see or reach it, so it should always stay empty).
   -------------------------------------------------------------------------- */
body.demain-contact .ct-hp {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ==========================================================================
   Responsive — Tablet
   ========================================================================== */
@media (max-width: 1024px) {
  body.demain-contact .ct-entry-grid { grid-template-columns: 1fr; max-width: 560px; gap: 56px; }
  body.demain-contact .ct-entry-item { border-left: none; padding: 0; border-top: 1px solid rgba(15, 28, 46, 0.12); padding-top: 48px; }
  body.demain-contact .ct-entry-item:first-child { border-top: none; padding-top: 0; }
}

/* ==========================================================================
   Responsive — Mobile
   ========================================================================== */
@media (max-width: 768px) {
  body.demain-contact { --header-h: 64px; }

  body.demain-contact .header-inner { padding: 0 20px; }
  body.demain-contact .main-nav { display: none; }
  body.demain-contact .header-right .btn-small { display: none; }
  body.demain-contact .hamburger { display: flex; }
  body.demain-contact .mobile-nav { display: flex; position: fixed; top: var(--header-h); left: 0; right: 0; }

  body.demain-contact .ct-hero { padding: calc(var(--header-h) + 50px) 24px 70px; }
  body.demain-contact .ct-hero-title { font-size: 1.6rem; }

  body.demain-contact .ct-entry { padding: 70px 24px; }
  body.demain-contact .ct-entry-grid { gap: 44px; }

  body.demain-contact .ct-forms { padding: 70px 24px; }
  body.demain-contact .ct-switch { gap: 14px; margin-bottom: 48px; }
  body.demain-contact .ct-panel-head { margin-bottom: 40px; }

  body.demain-contact .ct-choice-group { grid-template-columns: 1fr; }
  body.demain-contact .ct-field { margin-bottom: 32px; }

  body.demain-contact .site-footer { padding: 50px 24px 24px; }
  body.demain-contact .footer-top { flex-direction: column; align-items: flex-start; }

  body.demain-contact .ct-success { padding: 90px 24px; }
}
