/* =========================================
   AK Works — style.css
   Navy / Dark Blue theme
   ========================================= */

/* ── Variables ── */
:root {
  --navy:       #0a1628;
  --navy-mid:   #112240;
  --navy-light: #1a3259;
  --accent:     #e8a020;
  --cyan:       #4fc3f7;
  --white:      #f0f4f8;
  --gray:       #8fa0b4;
  --border:     rgba(79,195,247,0.15);
  --radius:     8px;
  --shadow:     0 4px 24px rgba(0,0,0,0.4);
  --font-main:  'Noto Sans JP', sans-serif;
  --font-head:  'Oswald', 'Bebas Neue', sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--navy);
  color: var(--white);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,22,40,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.logo { display: flex; flex-direction: column; line-height: 1.1; }
.logo-main {
  font-family: var(--font-head);
  font-size: 1.6rem;
  letter-spacing: .08em;
  color: var(--accent);
}
.logo-sub { font-size: .65rem; color: var(--gray); letter-spacing: .05em; }
.logo:hover { text-decoration: none; }
.global-nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
}
.global-nav a {
  color: var(--white);
  font-size: .88rem;
  letter-spacing: .03em;
  transition: color .2s;
}
.global-nav a:hover { color: var(--accent); text-decoration: none; }
.cart-btn {
  position: relative;
  color: var(--white);
  display: flex;
  align-items: center;
  padding: 4px;
  margin-left: 8px;
}
.cart-btn:hover { color: var(--accent); }
.cart-badge {
  position: absolute;
  top: -4px; right: -6px;
  background: var(--accent);
  color: var(--navy);
  font-size: .65rem;
  font-weight: 700;
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 8px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--white);
  transition: .2s;
}
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--navy-mid);
  padding: 8px 16px 16px;
  border-top: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--white);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: .95rem;
}

/* ── Footer ── */
.site-footer {
  background: #060e1a;
  border-top: 1px solid var(--border);
  margin-top: 80px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 16px 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.footer-logo {
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}
.footer-brand p { color: var(--gray); font-size: .88rem; }
.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.footer-links h4 {
  color: var(--gray);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.footer-links a {
  display: block;
  color: var(--white);
  font-size: .85rem;
  margin-bottom: 6px;
  opacity: .8;
}
.footer-links a:hover { opacity: 1; color: var(--accent); text-decoration: none; }
.footer-bottom {
  text-align: center;
  padding: 16px;
  border-top: 1px solid var(--border);
  color: var(--gray);
  font-size: .8rem;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #1a3259 50%, #0a1628 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('https://images.unsplash.com/photo-1544551763-46a013bb70d5?w=1400&q=80') center/cover no-repeat;
  opacity: .18;
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 40px 16px;
}
.hero-eyebrow {
  font-size: .8rem;
  letter-spacing: .2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 7vw, 5rem);
  letter-spacing: .06em;
  line-height: 1;
  margin-bottom: 16px;
  color: var(--white);
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--gray);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Announcement banner ── */
.announce-banner {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  margin: 24px auto;
  max-width: 760px;
  text-align: center;
  font-size: .9rem;
  color: var(--gray);
}

/* ── Section ── */
.section { padding: 64px 16px; max-width: 1200px; margin: 0 auto; }
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: .05em;
  margin-bottom: 8px;
  color: var(--white);
}
.section-title span { color: var(--accent); }
.section-sub {
  color: var(--gray);
  font-size: .9rem;
  margin-bottom: 40px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity .2s, transform .15s;
}
.btn:hover { opacity: .85; transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--navy); }
.btn-outline {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}
.btn-sm { padding: 8px 16px; font-size: .82rem; }

/* ── Product grid ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.product-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s, transform .15s;
}
.product-card:hover { border-color: var(--cyan); transform: translateY(-3px); }
.product-img-link { display: block; overflow: hidden; }
.product-card img {
  width: 100%; height: 200px;
  object-fit: cover;
  transition: transform .3s;
}
.product-card:hover img { transform: scale(1.04); }
.product-info { padding: 16px; }
.product-category {
  font-size: .72rem;
  color: var(--cyan);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.product-name { font-size: 1rem; font-weight: 600; margin: 6px 0 4px; }
.product-name a { color: var(--white); }
.product-name a:hover { color: var(--accent); text-decoration: none; }
.product-price { font-size: 1.05rem; color: var(--accent); font-weight: 700; }
.tax-note { font-size: .72rem; color: var(--gray); font-weight: 400; }
.product-actions { margin-top: 12px; }

/* ── Category filter ── */
.filter-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 32px; }
.filter-btn {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--gray);
  font-size: .82rem;
  cursor: pointer;
  transition: .2s;
}
.filter-btn.active, .filter-btn:hover {
  background: var(--navy-light);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ── Product detail ── */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.product-detail-img { border-radius: var(--radius); overflow: hidden; }
.product-detail-img img { width: 100%; object-fit: cover; border-radius: var(--radius); }
.product-detail-info { display: flex; flex-direction: column; gap: 16px; }
.product-detail-price { font-size: 1.4rem; color: var(--accent); font-weight: 700; }
.product-detail-desc { color: var(--gray); line-height: 1.8; }
.specs-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.specs-table th, .specs-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.specs-table th { color: var(--gray); width: 40%; }
.size-select {
  width: 100%;
  padding: 10px 12px;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-size: .95rem;
  margin-top: 6px;
}
#sizeSelectArea label { color: var(--gray); font-size: .85rem; }
.breadcrumb { color: var(--gray); font-size: .82rem; margin-bottom: 24px; }
.breadcrumb a { color: var(--gray); }
.breadcrumb a:hover { color: var(--accent); }

/* ── Cart ── */
.cart-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
}
.cart-item-name { flex: 1; font-weight: 600; }
.cart-item-controls { display: flex; align-items: center; gap: 8px; }
.qty-btn {
  width: 30px; height: 30px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--white);
  cursor: pointer;
  font-size: 1rem;
}
.qty-val { min-width: 24px; text-align: center; }
.cart-item-price { color: var(--accent); font-weight: 700; white-space: nowrap; }
.remove-btn {
  background: none;
  border: none;
  color: var(--gray);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px;
  line-height: 1;
}
.remove-btn:hover { color: #e05555; }
.cart-summary {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.cart-total-label { font-size: .9rem; color: var(--gray); }
.cart-total-amount { font-size: 1.5rem; font-weight: 700; color: var(--accent); }

/* ── Order summary ── */
.order-text-box {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  font-family: monospace;
  font-size: .88rem;
  white-space: pre-wrap;
  color: var(--white);
  margin-top: 16px;
}
.copy-btn {
  margin-top: 10px;
  padding: 8px 20px;
  background: var(--navy-light);
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  color: var(--cyan);
  cursor: pointer;
  font-size: .85rem;
}
.copy-btn:hover { background: var(--cyan); color: var(--navy); }

/* ── Info cards ── */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.info-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.info-card h3 { color: var(--accent); margin-bottom: 10px; }
.info-card p { color: var(--gray); font-size: .9rem; line-height: 1.8; }

/* ── Table ── */
.data-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.data-table th, .data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.data-table th { color: var(--gray); width: 35%; background: var(--navy-mid); }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; color: var(--gray); font-size: .88rem; }
.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-size: .95rem;
  font-family: var(--font-main);
}
.form-control:focus { outline: none; border-color: var(--cyan); }
textarea.form-control { min-height: 120px; resize: vertical; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: .88rem;
  opacity: 0;
  transform: translateY(10px);
  transition: .3s;
  z-index: 9999;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { border-color: #4caf50; color: #81c784; }
.toast-error { border-color: #e05555; color: #ef9a9a; }
.toast-info { border-color: var(--cyan); color: var(--cyan); }

/* ── Page title ── */
.page-hero {
  background: linear-gradient(135deg, var(--navy-mid) 0%, var(--navy) 100%);
  border-bottom: 1px solid var(--border);
  padding: 56px 16px 40px;
  text-align: center;
}
.page-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 5vw, 3rem);
  letter-spacing: .06em;
  color: var(--white);
}
.page-hero p { color: var(--gray); margin-top: 8px; font-size: .9rem; }

/* ── Feature chips ── */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip {
  padding: 4px 14px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: .78rem;
  color: var(--cyan);
}

/* ── No products ── */
.no-products { text-align: center; color: var(--gray); padding: 40px 0; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .global-nav { display: none; }
  .hamburger { display: flex; }
  .product-detail { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .cart-item { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.4rem; }
  .product-grid { grid-template-columns: 1fr 1fr; }
}