/*
Theme Name: bishulan_petfood Theme
*/

/* ============================================================
   BISHULAN / HONOLULU Pet Food — Silver-based Refined Design
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Silver Palette */
  --silver-lightest: #f8f8f9;
  --silver-light:    #eaeaed;
  --silver-mid:      #c8c8ce;
  --silver-base:     #a0a0aa;
  --silver-dark:     #6e6e7a;
  --silver-deepest:  #2c2c34;

  /* Accent */
  --accent-gold:     #c9a96e;
  --accent-gold-lt:  #e8d5b0;
  --white:           #ffffff;
  --black:           #111114;

  /* Typography */
  --font-en: 'Helvetica Neue', Arial, sans-serif;
  --font-ja: 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-gap: 100px;
  --container-w: 1100px;
  --radius: 4px;

  /* Transition */
  --tr: 0.25s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; scroll-padding-top: 80px; }
body {
  font-family: var(--font-ja);
  background: var(--silver-lightest);
  color: var(--silver-deepest);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
address { font-style: normal; }

/* ---------- Accessibility Utilities ---------- */
/* スクリーンリーダー専用テキスト（視覚的には非表示） */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* スキップリンク（キーボード操作時のみ表示） */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 10px 16px;
  background: var(--silver-deepest);
  color: var(--white);
  font-size: 0.85rem;
  border-radius: var(--radius);
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 16px;
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

/* フォーカス可視化（キーボード操作時） */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

/* ---------- Container ---------- */
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--silver-light);
}
.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo { margin: 0; }
.logo a { display: flex; flex-direction: column; gap: 2px; }
.logo-main {
  font-family: var(--font-en);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--silver-deepest);
}
.logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--silver-base);
  text-transform: uppercase;
}

/* Global Nav */
.global-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}
.global-nav a {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--silver-dark);
  transition: color var(--tr);
}
.global-nav a:hover { color: var(--silver-deepest); }
.nav-btn {
  border: 1px solid var(--silver-mid) !important;
  padding: 8px 20px !important;
  border-radius: var(--radius);
  color: var(--silver-deepest) !important;
  transition: background var(--tr), color var(--tr) !important;
}
.nav-btn:hover {
  background: var(--silver-deepest) !important;
  color: var(--white) !important;
  border-color: var(--silver-deepest) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px; height: 18px;
  background: none; border: none; cursor: pointer;
  padding: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--silver-deepest);
  border-radius: 2px;
  transition: all var(--tr);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--silver-deepest) 0%, #3e3e4a 55%, var(--silver-dark) 100%);
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
/* 装飾ライン */
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    linear-gradient(90deg, rgba(201,169,110,0.06) 1px, transparent 1px),
    linear-gradient(rgba(201,169,110,0.06) 1px, transparent 1px);
  background-size: 80px 80px;
}
.hero-inner {
  position: relative;
  max-width: var(--container-w);
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.hero-lead {
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  color: var(--silver-mid);
  letter-spacing: 0.06em;
  line-height: 1.9;
  margin-bottom: 40px;
}
.br-sp { display: none; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  padding: 14px 32px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--tr);
  text-align: center;
}
.btn-primary {
  background: var(--accent-gold);
  color: var(--white);
  border-color: var(--accent-gold);
}
.btn-primary:hover {
  background: #b8924a;
  border-color: #b8924a;
}
.btn-secondary {
  background: var(--silver-deepest);
  color: var(--white);
  border-color: var(--silver-deepest);
  width: 100%;
  margin-top: 16px;
}
.btn-secondary:hover {
  background: var(--silver-dark);
  border-color: var(--silver-dark);
}
.btn-outline {
  background: transparent;
  color: var(--silver-deepest);
  border-color: var(--silver-mid);
}
.btn-outline:hover {
  background: var(--silver-deepest);
  color: var(--white);
  border-color: var(--silver-deepest);
}
.btn-large { padding: 18px 44px; font-size: 0.9rem; }

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section { padding: var(--section-gap) 0; }
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--silver-deepest);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 0.85rem;
  color: var(--silver-base);
  letter-spacing: 0.06em;
}

/* ============================================================
   CONCEPT
   ============================================================ */
.concept { background: var(--white); }
.concept-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.concept-card {
  padding: 40px 32px;
  border: 1px solid var(--silver-light);
  border-radius: var(--radius);
  text-align: center;
  transition: box-shadow var(--tr), transform var(--tr);
}
.concept-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.07);
  transform: translateY(-4px);
}
.concept-icon {
  font-size: 1.4rem;
  color: var(--accent-gold);
  margin-bottom: 20px;
}
.concept-card h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  color: var(--silver-deepest);
}
.concept-card p {
  font-size: 0.85rem;
  color: var(--silver-dark);
  line-height: 1.8;
}

/* ============================================================
   PRODUCTS
   ============================================================ */
.products { background: var(--silver-lightest); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--white);
  border: 1px solid var(--silver-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--tr), transform var(--tr);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}
.product-img-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}
.product-img-wrap img{
  object-fit: cover;
}
.product-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--silver-base);
}
.product-badge {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent-gold);
  color: var(--white);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 2px;
}
.product-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-category {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.product-name {
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--silver-deepest);
  margin-bottom: 10px;
}
.product-desc {
  font-size: 0.78rem;
  color: var(--silver-dark);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 14px;
}
.product-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}
.product-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--silver-deepest);
  font-family: var(--font-en);
}
.product-volume {
  font-size: 0.75rem;
  color: var(--silver-base);
}

/* ============================================================
   STORE
   ============================================================ */
.store { background: var(--white); }
.store-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.store-map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--silver-light);
  aspect-ratio: 4/3;
}
.store-map-placeholder {
  width: 100%; height: 100%;
  background: var(--silver-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--silver-base);
  min-height: 300px;
}
.store-info-list { margin-bottom: 32px; }
.store-info-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 8px;
  padding: 14px 0;
  border-bottom: 1px solid var(--silver-light);
  font-size: 0.875rem;
}
.store-info-row:first-child { border-top: 1px solid var(--silver-light); }
.store-info-row dt {
  color: var(--silver-base);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding-top: 1px;
}
.store-info-row dd { color: var(--silver-deepest); }
.store-info-row a { color: var(--accent-gold); }

/* ============================================================
   PURCHASE CTA
   ============================================================ */
.purchase-cta {
  background: linear-gradient(160deg, var(--silver-deepest) 0%, #3e3e4a 100%);
  position: relative;
  overflow: hidden;
}
.purchase-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(201,169,110,0.06) 1px, transparent 1px),
    linear-gradient(rgba(201,169,110,0.06) 1px, transparent 1px);
  background-size: 80px 80px;
}
.cta-inner {
  position: relative;
  text-align: center;
}
.cta-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
  margin: 12px 0 20px;
}
.cta-lead {
  font-size: 0.9rem;
  color: var(--silver-mid);
  letter-spacing: 0.06em;
  line-height: 1.9;
  margin-bottom: 36px;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.purchase-cta .btn-outline {
  color: var(--silver-mid);
  border-color: var(--silver-dark);
}
.purchase-cta .btn-outline:hover {
  background: var(--white);
  color: var(--silver-deepest);
}
.cta-note {
  font-size: 0.78rem;
  color: var(--silver-base);
  letter-spacing: 0.06em;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--black);
  padding: 56px 0 32px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 28px;
}
.footer-brand .logo-main { color: var(--silver-mid); font-size: 0.95rem; }
.footer-brand p {
  font-size: 0.75rem;
  color: var(--silver-dark);
  margin-top: 8px;
  line-height: 1.8;
}
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  justify-content: flex-end;
}
.footer-nav a {
  font-size: 0.78rem;
  color: var(--silver-dark);
  letter-spacing: 0.06em;
  transition: color var(--tr);
}
.footer-nav a:hover { color: var(--silver-mid); }
.copyright {
  font-size: 0.72rem;
  color: var(--silver-dark);
  letter-spacing: 0.1em;
  text-align: center;
  font-family: var(--font-en);
}

/* ============================================================
   RESPONSIVE — Tablet ( ≤ 900px )
   ============================================================ */
@media (max-width: 900px) {
  :root { --section-gap: 72px; }

  .concept-grid { grid-template-columns: 1fr 1fr; }
  .product-grid  { grid-template-columns: 1fr 1fr; }
  .store-layout  { grid-template-columns: 1fr; gap: 40px; }

  .footer-top { flex-direction: column; }
  .footer-nav ul { justify-content: flex-start; }
}

/* ============================================================
   RESPONSIVE — Mobile ( ≤ 600px )
   ============================================================ */
@media (max-width: 600px) {
  :root { --section-gap: 56px; }

  /* Header */
  .global-nav ul { display: none; }
  .global-nav ul.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--white);
    padding: 24px;
    gap: 20px;
    border-top: 1px solid var(--silver-light);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .hamburger { display: flex; }

  /* Hero */
  .br-sp { display: block; }
  .hero { padding: 100px 24px 64px; }

  /* Concept — single column */
  .concept-grid { grid-template-columns: 1fr; gap: 20px; }
  .concept-card { padding: 28px 24px; }

  /* Products — single column */
  .product-grid  { grid-template-columns: 1fr; gap: 20px; }

  /* Store */
  .store-info-row { grid-template-columns: 80px 1fr; }

  /* CTA */
  .cta-buttons { flex-direction: column; align-items: center; }
  .btn-large { width: 100%; max-width: 360px; }
}