/* ══════════════════════════════════════════════════════════
   marutoku-RoundTop — 円形天板オーダーサイト
   デザイントークンは marutoku-shindan-lp/css/style.css に準拠
   レイアウトは kanademono の商品ページ型（左ビジュアル / 右選択パネル）
══════════════════════════════════════════════════════════ */

:root {
  /* Primary Green */
  --color-primary-700: #247D52;
  --color-primary-600: #2F9964;
  --color-primary-500: #3FAB75;
  --color-primary-300: #7DCAA2;
  --color-primary-100: #E8F6EF;
  --color-primary-050: #F4FBF7;
  /* Neutral Gray */
  --color-gray-900: #232827;
  --color-gray-700: #4E5553;
  --color-gray-500: #9FA0A0;
  --color-gray-300: #D8DADA;
  --color-gray-100: #F2F3F3;
  --color-white: #FFFFFF;
  /* Wood Accent */
  --color-wood-700: #7A4E2A;
  --color-wood-500: #B9824B;
  --color-wood-100: #F7EFE6;

  --font-base: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;

  --space-4: 4px;  --space-8: 8px;   --space-12: 12px; --space-16: 16px;
  --space-24: 24px; --space-32: 32px; --space-48: 48px; --space-64: 64px;

  --radius-sm: 8px; --radius-md: 14px; --radius-lg: 20px; --radius-pill: 999px;

  --shadow-card: 0 8px 24px rgba(35, 40, 39, 0.08);
  --shadow-floating: 0 16px 40px rgba(35, 40, 39, 0.12);
  --shadow-cta: 0 8px 20px rgba(63, 171, 117, 0.24);
  --focus-ring: 0 0 0 3px rgba(63, 171, 117, 0.35);

  --layout-max: 1120px;
  --header-h: 60px;
  --sticky-h: 72px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 0.2s; --dur-base: 0.3s;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base);
  color: var(--color-gray-900);
  background: var(--color-white);
  line-height: 1.8;
  padding-bottom: var(--sticky-h);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
button { font-family: inherit; }

.container { max-width: var(--layout-max); margin: 0 auto; padding: 0 var(--space-16); }
.center { text-align: center; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 14px 28px; border-radius: var(--radius-pill); border: none;
  cursor: pointer; font-size: 15px; font-weight: 700; line-height: 1.3;
  text-align: center; text-decoration: none; white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-full { width: 100%; }
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.btn-primary { background: var(--color-primary-500); color: #fff; box-shadow: var(--shadow-cta); }
.btn-primary:hover { background: var(--color-primary-600); }
.btn-secondary { background: #fff; color: var(--color-primary-700); border: 1px solid var(--color-primary-500); }
.btn-secondary:hover { background: var(--color-primary-100); }
.btn.is-disabled {
  background: var(--color-gray-300); color: var(--color-white);
  box-shadow: none; pointer-events: none;
}

/* ── Header ── */
#site-header {
  position: sticky; top: 0; z-index: 20;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-gray-100);
}
.header-inner {
  max-width: var(--layout-max); margin: 0 auto; height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--space-16);
}
.header-logo img { height: 20px; width: auto; }

/* ══════════ HERO ══════════ */
.hero { position: relative; background: var(--color-wood-100); }
/* aspect-ratio + max-height だと幅が縮んで横に余白が出るため、高さを直接決める */
.hero-media { position: relative; height: clamp(340px, 42vw, 540px); overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; object-position: center right; }
.hero-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center;
  background: linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.92) 38%, rgba(255,255,255,0) 68%);
}
/* 画像が読めなかったときは通常フローに戻す */
.hero.no-image .hero-media { display: none; }
.hero.no-image .hero-overlay { position: static; background: none; padding: var(--space-64) 0; }

.eyebrow { font-size: 13px; font-weight: 700; margin-bottom: var(--space-8); letter-spacing: 0.08em; }
.eyebrow-hero { color: var(--color-wood-700); }
.hero-title {
  font-family: var(--font-heading);
  font-size: 38px; line-height: 1.35; font-weight: 700;
  margin-bottom: var(--space-16);
}
.hero-lead { color: var(--color-gray-700); font-size: 15px; max-width: 19em; }
.hero-specs { display: flex; flex-wrap: wrap; gap: var(--space-8); margin-top: var(--space-24); }
.spec-chip {
  background: var(--color-white); color: var(--color-wood-700);
  border: 1px solid var(--color-wood-500);
  border-radius: var(--radius-pill);
  padding: 4px 14px; font-size: 13px; font-weight: 700;
}

/* ══════════ 商品レイアウト ══════════ */
.product-layout {
  max-width: 720px; margin: 0 auto;
  padding-top: var(--space-48); padding-bottom: var(--space-64);
}

/* ── 選択パネル ── */
/* min-width:0 が無いと grid item が中身（カルーセル）の幅まで膨張して overflow が効かない */
.product-form { min-width: 0; }
.product-title {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 700; line-height: 1.5;
}
.product-price-top {
  font-family: var(--font-heading);
  font-size: 28px; font-weight: 700; color: var(--color-wood-700);
  margin-top: var(--space-4);
}
.price-note { font-size: 12px; color: var(--color-gray-500); text-align: right; margin-top: -8px; }
.price-note.is-loading { color: var(--color-primary-700); }
.price-note.is-estimate { color: var(--color-wood-700); }

.opt { margin-top: var(--space-32); }
.opt-title {
  font-family: var(--font-heading);
  font-size: 15px; font-weight: 700;
  padding-left: var(--space-12);
  border-left: 4px solid var(--color-primary-500);
  margin-bottom: var(--space-12);
}
.opt-hint { font-size: 12px; color: var(--color-gray-500); margin-top: var(--space-8); }
.opt-desc {
  font-size: 13px; line-height: 1.8; color: var(--color-gray-700);
  background: var(--color-primary-050); border-radius: var(--radius-sm);
  padding: var(--space-12); margin-top: var(--space-12);
}

/* ── 樹種タブ ── */
.wood-tabs { display: flex; gap: var(--space-8); margin-bottom: var(--space-12); }
.wood-tab {
  flex: 1; padding: 10px 8px; cursor: pointer;
  background: var(--color-gray-100); border: none;
  border-radius: var(--radius-pill);
  font-size: 14px; font-weight: 700; color: var(--color-gray-700);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.wood-tab:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.wood-tab.is-active { background: var(--color-primary-500); color: #fff; }

/* ── 樹種カルーセル ── */
.carousel { position: relative; }
.car-track {
  display: flex; gap: var(--space-12);
  overflow-x: auto; scroll-snap-type: x proximity;
  scroll-padding-left: 0;
  padding-bottom: var(--space-8);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.car-track::-webkit-scrollbar { height: 6px; }
.car-track::-webkit-scrollbar-thumb { background: var(--color-gray-300); border-radius: var(--radius-pill); }

.wood-card {
  flex: 0 0 138px; scroll-snap-align: start;
  display: flex; flex-direction: column; text-align: left;
  background: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md); overflow: hidden;
  cursor: pointer; padding: 0;
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.wood-card:hover { transform: translateY(-2px); border-color: var(--color-primary-300); }
.wood-card:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.wood-card.is-selected { border-color: var(--color-primary-500); box-shadow: var(--shadow-card); }
.wood-thumb { display: block; height: 84px; background-size: cover; background-position: center; }
.wood-thumb img { width: 100%; height: 100%; object-fit: cover; }
.wood-name {
  display: block; font-size: 13px; font-weight: 700; line-height: 1.5;
  padding: var(--space-8);
}
.wood-low {
  display: block; font-size: 10px; font-weight: 700; line-height: 1.6;
  color: var(--color-warning-700, #A2662B);
}
.tag-low { background: #FBEEDD; color: #A2662B; }

.car-nav {
  position: absolute; top: 42px; z-index: 2;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,0.95); border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700); font-size: 20px; line-height: 1;
  cursor: pointer; box-shadow: var(--shadow-card);
  display: flex; align-items: center; justify-content: center;
  transition: opacity var(--dur-fast) var(--ease);
}
.car-prev { left: -10px; }
.car-next { right: -10px; }
.car-nav:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* ── サイズ ── */
.field { margin-bottom: var(--space-24); }
.field:last-child { margin-bottom: 0; }
.field-label { display: block; font-size: 14px; font-weight: 700; margin-bottom: var(--space-8); }
.field-value {
  font-family: var(--font-heading);
  font-size: 22px; color: var(--color-primary-700); margin-left: var(--space-8);
}
.unit { font-size: 13px; color: var(--color-gray-700); margin-left: 2px; }
.fixed-badge {
  font-size: 11px; font-weight: 700; color: var(--color-gray-500);
  background: var(--color-gray-100); border-radius: var(--radius-pill);
  padding: 2px 10px; margin-left: var(--space-8);
}

.slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: var(--radius-pill);
  background: var(--color-gray-300); outline: none; cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--color-primary-500); border: 3px solid #fff;
  box-shadow: var(--shadow-cta); cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--color-primary-500); border: 3px solid #fff;
  box-shadow: var(--shadow-cta); cursor: pointer;
}
.slider:focus-visible { box-shadow: var(--focus-ring); }
.range-caps {
  display: flex; justify-content: space-between;
  font-size: 12px; color: var(--color-gray-500); margin-top: var(--space-4);
}
/* 直径から分かる「何人で囲めるか」の目安と、樹種ごとの上限 */
.size-hint { font-size: 13px; line-height: 1.7; color: var(--color-gray-700); margin-top: var(--space-8); }
.size-limit {
  font-size: 12px; line-height: 1.7; color: #A2662B;
  background: #FBEEDD; border-radius: var(--radius-sm);
  padding: var(--space-8) var(--space-12); margin-top: var(--space-8);
}

/* ── 3カラムのオプションボタン（スマホでも3カラム）── */
.opt-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.opt-btn {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: var(--color-white); border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md); padding: var(--space-12) var(--space-4);
  cursor: pointer; text-align: center;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.opt-btn:hover { border-color: var(--color-primary-300); }
.opt-btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.opt-btn.is-selected { border-color: var(--color-primary-500); background: var(--color-primary-100); }
.opt-icon { display: block; width: 46px; height: 30px; }
.opt-icon svg { width: 100%; height: 100%; }
/* 面取り断面・コーナーR は塗りで表現、仕上げは fill 指定済みなので上書きしない */
.opt-icon svg path, .opt-icon svg rect { fill: var(--color-wood-500); }
.opt-btn.is-selected .opt-icon svg path,
.opt-btn.is-selected .opt-icon svg rect { fill: var(--color-wood-700); }
.opt-name { font-size: 13px; font-weight: 700; line-height: 1.4; }
.opt-sub { font-size: 10px; color: var(--color-gray-500); line-height: 1.4; }

/* ── 注文ボックス ── */
.order-box {
  background: var(--color-primary-050);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  margin-top: var(--space-32);
}
.summary-row {
  display: flex; justify-content: space-between; gap: var(--space-16);
  padding: var(--space-8) 0; border-bottom: 1px solid var(--color-gray-300);
}
.summary-row dt { font-size: 13px; color: var(--color-gray-700); flex-shrink: 0; }
.summary-row dd { font-size: 13px; font-weight: 700; text-align: right; }
.summary-price {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: var(--space-16) 0;
}
.summary-price-label { font-size: 14px; color: var(--color-gray-700); }
.summary-price-value {
  font-family: var(--font-heading);
  font-size: 28px; font-weight: 700; color: var(--color-wood-700);
}
.summary-note {
  font-size: 12px; line-height: 1.7; color: var(--color-gray-500);
  margin-top: var(--space-12); text-align: center;
}
.disclaimer {
  font-size: 12px; line-height: 1.7; color: var(--color-gray-500);
  margin-top: var(--space-24);
}

/* ══════════ 樹種モーダル ══════════ */
body.modal-open { overflow: hidden; }
.modal {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-24);
}
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(35,40,39,0.62); }
.modal-panel {
  position: relative;
  width: min(880px, 100%); max-height: min(88vh, 760px);
  display: flex; flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-floating);
  animation: modal-in var(--dur-base) var(--ease);
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}
/* overflow:hidden が無いと img の実寸が親を突き抜けて body に重なる */
.modal-media { flex: 1 1 auto; min-height: 220px; overflow: hidden; background: var(--color-gray-100); }
.modal-media img { width: 100%; height: 100%; object-fit: cover; }
.modal-body { flex: 0 0 auto; padding: var(--space-24); }
.modal-name { font-family: var(--font-heading); font-size: 22px; font-weight: 700; line-height: 1.4; }
.modal-desc[hidden] { display: none; }
.modal-desc { font-size: 14px; line-height: 1.8; color: var(--color-gray-700); margin-top: var(--space-4); }
.modal-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--space-12); }
.tag {
  font-size: 12px; line-height: 1.7; color: var(--color-gray-700);
  background: var(--color-gray-100); border-radius: var(--radius-pill);
  padding: 1px 12px;
}
.modal-size { font-size: 12px; color: var(--color-gray-500); margin-top: var(--space-12); }
.modal-actions {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12);
  margin-top: var(--space-24);
}

/* ── Sticky bar ── */
.sticky-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  height: var(--sticky-h);
  background: rgba(255,255,255,0.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-top: 1px solid var(--color-gray-100);
  box-shadow: 0 -4px 20px rgba(35,40,39,0.06);
}
.sticky-inner {
  max-width: var(--layout-max); margin: 0 auto; height: 100%;
  display: flex; align-items: center;
  gap: var(--space-12); padding: 0 var(--space-16);
}
.sticky-info { flex: 1; }
/* 選んだ樹種の木目。タップでモーダルを開き直せる */
.sticky-thumb {
  position: relative; flex-shrink: 0;
  width: 48px; height: 48px; padding: 0;
  border: 2px solid var(--color-primary-500); border-radius: var(--radius-sm);
  overflow: hidden; cursor: pointer; background: var(--color-wood-100);
}
.sticky-thumb[hidden] { display: none; }
.sticky-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sticky-thumb-hint {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: rgba(35,40,39,0.62); color: #fff;
  font-size: 9px; font-weight: 700; line-height: 1.6; text-align: center;
}
.sticky-thumb:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.sticky-info { display: flex; flex-direction: column; line-height: 1.5; min-width: 0; }
.sticky-wood {
  font-size: 14px; font-weight: 700;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sticky-size { font-size: 12px; color: var(--color-gray-500); }
.sticky-cta { display: flex; align-items: center; gap: var(--space-16); flex-shrink: 0; }
.sticky-price {
  font-family: var(--font-heading);
  font-size: 20px; font-weight: 700; color: var(--color-wood-700);
}

/* ── Footer ── */
.site-footer {
  background: var(--color-gray-900); color: var(--color-gray-300);
  padding: var(--space-32) 0;
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-24); }
.footer-top {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: var(--space-16);
}
.footer-logo { height: 20px; width: auto; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.footer-nav a {
  color: rgba(255,255,255,0.82); font-size: 13px; font-weight: 500; text-decoration: none;
}
.footer-nav a:hover { color: #fff; text-decoration: underline; }
.footer-divider { height: 1px; background: rgba(255,255,255,0.12); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: var(--space-12); font-size: 13px;
}
.footer-bottom span { font-size: 12px; color: rgba(255,255,255,0.5); }

/* ══════════ Responsive ══════════ */
@media (max-width: 900px) {
  .hero-media { height: clamp(300px, 62vw, 420px); }
  .hero-media img { object-position: 70% center; }
  .hero-overlay {
    background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 45%, rgba(255,255,255,0.1) 100%);
    align-items: flex-start; padding-top: var(--space-32);
  }
  .hero-title { font-size: 28px; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 24px; }
  .hero-lead { font-size: 14px; }
  .product-title { font-size: 19px; }
  .product-price-top { font-size: 24px; }
  .wood-card { flex-basis: 124px; }
  .car-nav { display: none; }
  .opt-grid3 { gap: 6px; }
  .opt-btn { padding: var(--space-8) 2px; }
  .opt-icon { width: 40px; height: 26px; }
  .opt-name { font-size: 12px; }
  .order-box { padding: var(--space-16); }
  .modal { padding: var(--space-12); }
  .modal-panel { max-height: min(92vh, 720px); }
  .modal-media { min-height: 160px; }
  .modal-body { padding: var(--space-16); }
  .modal-name { font-size: 18px; }
  .modal-actions { grid-template-columns: 1fr; gap: var(--space-8); }
  .summary-row { flex-direction: column; gap: 0; }
  .summary-row dd { text-align: left; }
  .sticky-price { font-size: 17px; }
  .sticky-thumb { width: 42px; height: 42px; }
  .sticky-inner { gap: var(--space-8); padding: 0 var(--space-12); }
  .sticky-cta { gap: var(--space-8); }
  .sticky-cta .btn { padding: 12px 18px; font-size: 14px; }
}