/* ========================================
   買取ドットコム & 欅の森 統合サイト
   デザインテーマ：昭和レトロ / アンティーク / 木の温もり
   ======================================== */

/* ── リセット & 基本 ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W4",
               "Meiryo", "メイリオ", "Noto Sans JP", sans-serif;
  color: #3a2e24;
  background: #faf6ef;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── カラースキーム ── */
:root {
  --clr-primary: #5b3a29;
  --clr-secondary: #8b6f47;
  --clr-accent: #c49a6c;
  --clr-warm: #e8d5b7;
  --clr-bg: #faf6ef;
  --clr-bg-alt: #f0e6d2;
  --clr-text: #3a2e24;
  --clr-text-light: #6b5b4e;
  --clr-white: #fff;
  --clr-green: #4a7c59;
  --clr-red: #a8432e;
  --font-display: "Yu Mincho", "游明朝", "Hiragino Mincho ProN", serif;
  --font-body: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  --shadow-soft: 0 2px 12px rgba(91,58,41,.08);
  --shadow-card: 0 4px 24px rgba(91,58,41,.10);
  --radius: 8px;
  --radius-lg: 16px;
}

/* ── 共通ユーティリティ ── */
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; position: relative; } /* 余白を贅沢にして高級感を演出 */
.section-alt { background: var(--clr-bg-alt); }
.section-dark { background: var(--clr-primary); color: var(--clr-white); }
.section-dark a { color: var(--clr-accent); }
.section-heading {
  font-family: var(--font-display);
  font-size: 2.2rem; /* 少し大きく */
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: 0.1em;
  position: relative;
  color: var(--clr-primary);
}
.section-heading::after {
  content: '';
  display: block;
  width: 100px; height: 4px;
  background: var(--clr-accent);
  margin: 16px auto 0;
  border-top: 1px solid var(--clr-primary); /* ダブルライン風のアクセント */
  border-bottom: 1px solid var(--clr-primary);
}
.section-dark .section-heading { color: var(--clr-warm); }
.section-dark .section-heading::after { background: var(--clr-accent); border-color: var(--clr-warm); }
.sub-heading {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  text-align: center;
  margin-top: -44px;
  margin-bottom: 60px;
  letter-spacing: 0.05em;
}
.section-dark .sub-heading { color: var(--clr-warm); opacity: 0.9; }

/* ボタン (高級感とスマホ優先の最適化) */
.btn {
  display: inline-block;
  padding: 16px 44px; /* タップしやすく大きく */
  font-size: 1rem;
  font-weight: 600;
  border-radius: 4px; /* アンティーク感に合わせ角張らせる */
  transition: all .4s cubic-bezier(0.165, 0.84, 0.44, 1);
  text-align: center;
  letter-spacing: 0.08em;
  min-height: 54px; /* スマホでのタップしやすさを担保 */
  box-shadow: 0 4px 12px rgba(91,58,41,0.08);
}
.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border: 1px solid var(--clr-primary);
}
.btn-primary:hover {
  background: var(--clr-bg);
  color: var(--clr-primary);
  border-color: var(--clr-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(91,58,41,0.15);
}
.btn-secondary {
  background: transparent;
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
}
.btn-secondary:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--clr-accent);
  color: var(--clr-white);
  border: 1px solid var(--clr-accent);
}
.btn-accent:hover {
  background: var(--clr-bg);
  color: var(--clr-accent);
  border-color: var(--clr-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(196,154,108,0.25);
}

/* 画像プレースホルダー (仮枠も綺麗に見せる) */
.img-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--clr-warm), var(--clr-bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--clr-text-light);
  font-size: .9rem;
  font-weight: 600;
  text-align: center;
  border: 1px dashed var(--clr-accent);
  box-shadow: inset 0 0 20px rgba(91,58,41,0.05);
}

/* タグ */
.tag {
  display: inline-block;
  font-size: .75rem;
  padding: 4px 14px;
  border-radius: 20px;
  background: var(--clr-warm);
  color: var(--clr-primary);
  margin: 4px;
}

/* ── ヘッダー ── */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(250,246,239,.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 8px rgba(91,58,41,.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-primary);
}
.site-logo span { color: var(--clr-accent); }
.nav-main { display: flex; gap: 32px; }
.nav-main a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text);
  position: relative;
  padding: 4px 0;
  transition: color .2s;
}
.nav-main a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: width .3s;
}
.nav-main a:hover { color: var(--clr-primary); }
.nav-main a:hover::after { width: 100%; }
.nav-main a.active { color: var(--clr-primary); }
.nav-main a.active::after { width: 100%; }

/* ハンバーガー */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--clr-primary); transition: all .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* モバイルナビ */
.mobile-nav {
  display: none;
  position: fixed; top: 68px; left: 0; right: 0; bottom: 0;
  background: rgba(250,246,239,.98);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  z-index: 999;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-primary);
}

/* ── ヒーローセクション ── */
.hero {
  position: relative;
  padding: 160px 0 140px; /* パディングを拡大して贅沢な空間 */
  min-height: 60vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(58,46,36,0.92) 0%, rgba(91,58,41,0.95) 40%, rgba(139,111,71,0.92) 100%),
              url('../assets/images/shinyou_hero_bg.png') no-repeat center center / cover; /* 薄く背景に溶け込ませる */
  z-index: 0;
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(196,154,108,.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(74,124,89,.15) 0%, transparent 50%);
  z-index: 1;
}
.hero-pattern {
  position: absolute; inset: 0; z-index: 1; opacity: .03;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 20px, #fff 20px, #fff 21px),
    repeating-linear-gradient(-45deg, transparent, transparent 20px, #fff 20px, #fff 21px);
}
.hero .container { position: relative; z-index: 2; width: 100%; }
.hero { text-align: center; color: var(--clr-white); }
.hero-eyebrow {
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: 1.05rem;
  color: rgba(255,255,255,.8);
  max-width: 600px;
  margin: 0 auto 40px;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero .btn-primary { background: var(--clr-white); color: var(--clr-primary); }
.hero .btn-primary:hover { background: var(--clr-accent); color: var(--clr-white); }
.hero .btn-outline {
  border: 2px solid rgba(255,255,255,.4);
  color: var(--clr-white);
  background: transparent;
}
.hero .btn-outline:hover { border-color: var(--clr-white); }

/* ── サービスカード ── */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.service-card__image { height: 200px; }
.service-card__body { padding: 28px 24px; }
.service-card__icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--clr-primary);
}
.service-card p { font-size: .9rem; color: var(--clr-text-light); margin-bottom: 16px; }
.service-card__link {
  font-size: .85rem;
  color: var(--clr-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .3s;
}
.service-card__link:hover { gap: 10px; }

/* ── ツインセクション（買取 + 欅の森） ── */
.twin-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-bottom: 48px;
}
.twin-block {
  padding: 48px 40px;
  position: relative;
}
.twin-block--kaitori { background: var(--clr-white); }
.twin-block--keyaki {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #2d1f14 100%);
  color: var(--clr-white);
}
.twin-block--keyaki .twin-eyebrow { color: var(--clr-accent); }
.twin-block--keyaki h2 { color: var(--clr-warm); }
.twin-block--keyaki .twin-desc { color: rgba(255,255,255,.75); }
.twin-block--keyaki .tag { background: rgba(196,154,108,.2); color: var(--clr-accent); }
.twin-eyebrow {
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 8px;
  font-weight: 600;
}
.twin-block h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--clr-primary);
}
.twin-desc {
  font-size: .92rem;
  color: var(--clr-text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}
.twin-tags { margin-bottom: 24px; }
.twin-image {
  position: absolute;
  bottom: 0; right: 0;
  width: 240px; height: 180px;
  border-radius: var(--radius) 0 0 0;
  overflow: hidden;
  box-shadow: -4px -4px 16px rgba(0,0,0,.08);
}

/* ── アイテム一覧（買取） ── */
.items-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.item-card {
  text-align: center;
  padding: 24px 12px;
  background: var(--clr-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform .3s;
}
.item-card:hover { transform: translateY(-2px); }
.item-card__icon {
  font-size: 2.2rem;
  margin-bottom: 8px;
}
.item-card span {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-primary);
}

/* ── 欅の森 メニュー ── */
.keyaki-menu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.menu-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 32px 24px;
  display: flex;
  gap: 20px;
  align-items: center;
  transition: transform .3s;
}
.menu-card:hover { transform: translateY(-2px); }
.menu-card__image {
  width: 120px; height: 120px;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.menu-card__info h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--clr-primary);
  margin-bottom: 4px;
}
.menu-card__price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-red);
  margin-bottom: 8px;
}
.menu-card__desc { font-size: .85rem; color: var(--clr-text-light); }

/* ── ステップ ── */
.steps {
  display: flex;
  gap: 32px;
  justify-content: center;
  position: relative;
}
.steps::before {
  content: '';
  position: absolute;
  top: 28px; left: 16%; right: 16%;
  height: 2px;
  background: var(--clr-warm);
}
.step {
  text-align: center;
  flex: 1;
  position: relative;
  z-index: 1;
}
.step__circle {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: var(--clr-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  border: 4px solid var(--clr-bg);
}
.step__label { font-size: .9rem; font-weight: 600; color: var(--clr-primary); }
.step__desc { font-size: .8rem; color: var(--clr-text-light); margin-top: 4px; }

/* ── よくあるご質問 ── */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--clr-warm);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 20px 0;
  font-size: .95rem;
  font-weight: 600;
  color: var(--clr-primary);
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color .2s;
}
.faq-question:hover { color: var(--clr-accent); }
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--clr-accent);
  transition: transform .3s;
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s;
  font-size: .88rem;
  color: var(--clr-text-light);
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

/* ── お問い合わせ ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item__icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--clr-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-item__text h4 { font-size: .9rem; font-weight: 600; margin-bottom: 2px; }
.contact-item__text p { font-size: .85rem; color: var(--clr-text-light); }
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-form label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-primary);
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--clr-warm);
  border-radius: var(--radius);
  font: inherit;
  font-size: .9rem;
  background: var(--clr-white);
  transition: border-color .2s;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--clr-primary);
}
.contact-form textarea { min-height: 140px; resize: vertical; }

/* ── フッター ── */
.site-footer {
  background: var(--clr-primary);
  color: rgba(255,255,255,.7);
  padding: 48px 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  margin-bottom: 24px;
}
.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--clr-warm);
  margin-bottom: 12px;
}
.footer-brand p { font-size: .85rem; line-height: 1.6; }
.footer-col h4 {
  font-size: .85rem;
  color: var(--clr-accent);
  margin-bottom: 12px;
  font-weight: 600;
}
.footer-col a {
  display: block;
  font-size: .85rem;
  padding: 3px 0;
  transition: color .2s;
}
.footer-col a:hover { color: var(--clr-accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .78rem;
}
.footer-bottom a { margin-left: 16px; }

/* ── ページヘッダー（サブページ） ── */
.page-header {
  padding: 80px 0 48px;
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-secondary) 100%);
  color: var(--clr-white);
  text-align: center;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  margin-bottom: 12px;
}
.page-header p { color: rgba(255,255,255,.7); font-size: .95rem; }

/* ── 西村秀男 ページ ── */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 80px 0;
}
.about-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.about-text h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--clr-primary);
  margin-bottom: 16px;
}
.about-text p { font-size: .92rem; color: var(--clr-text-light); margin-bottom: 16px; line-height: 1.8; }
.about-text .license {
  display: inline-block;
  background: var(--clr-warm);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-top: 16px;
}

/* ── 広告バナー ── */
.ad-banner {
  background: linear-gradient(135deg, var(--clr-warm) 0%, var(--clr-bg-alt) 100%);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 48px 0;
}
.ad-banner__image { flex-shrink: 0; }
.ad-banner__text h3 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 8px; }
.ad-banner__text p { font-size: .88rem; color: var(--clr-text-light); }

/* ── 実績カード ── */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--clr-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-soft);
}
.case-card__location { font-size: .78rem; color: var(--clr-accent); margin-bottom: 4px; }
.case-card h4 { font-size: .95rem; color: var(--clr-primary); margin-bottom: 8px; }
.case-card p { font-size: .85rem; color: var(--clr-text-light); line-height: 1.6; }

/* ── 戻りボタン ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--clr-text-light);
  margin-bottom: 24px;
  transition: color .2s;
}
.back-link:hover { color: var(--clr-primary); }

/* ── レスポンシブ (スマホ表示最優先の調整) ── */
@media (max-width: 900px) {
  .nav-main { display: none; }
  .hamburger { display: flex; }
  .section { padding: 70px 0; }
  .hero { padding: 120px 0 90px; min-height: auto; }
  .hero h1 { font-size: 2.2rem; line-height: 1.4; padding: 0 10px; }
  .hero-subtitle { font-size: 0.95rem; margin-bottom: 32px; }
  .hero-buttons { flex-direction: column; align-items: stretch; max-width: 340px; margin: 0 auto; gap: 12px; }
  .hero-buttons .btn { width: 100%; min-height: 52px; display: flex; align-items: center; justify-content: center; }
  .service-grid { grid-template-columns: 1fr; gap: 32px; }
  .twin-section { grid-template-columns: 1fr; gap: 0; }
  .twin-image { display: none; }
  .items-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .steps { flex-direction: column; align-items: center; gap: 24px; }
  .steps::before { display: none; }
  .keyaki-menu-grid { grid-template-columns: 1fr; gap: 20px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .cases { grid-template-columns: 1fr; gap: 20px; }
  .about-hero { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .about-text .license { display: block; margin-top: 24px; }
  .ad-banner { flex-direction: column; text-align: center; padding: 24px; }
}
@media (max-width: 600px) {
  .section { padding: 60px 0; }
  .hero h1 { font-size: 1.8rem; }
  .items-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .section-heading { font-size: 1.5rem; margin-bottom: 40px; }
  .sub-heading { margin-top: -28px; margin-bottom: 40px; }
  .btn { width: 100%; padding: 14px 24px; }
}