/* ============================================================
   style.css - グローバルスタイル
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Noto+Sans+JP:wght@300;400;500;700;900&display=swap');

/* ---------- リセット & 変数 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #09090f;
  --bg-secondary: #12121e;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1f1f38;
  --accent-purple: #7c3aed;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(124, 58, 237, 0.4);
  --glow-purple: 0 0 40px rgba(124, 58, 237, 0.3);
  --glow-cyan: 0 0 40px rgba(6, 182, 212, 0.3);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.6);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- ナビゲーション ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2.5rem;
  background: rgba(9, 9, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.navbar-logo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
}

.navbar-title {
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.navbar-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.navbar-link:hover {
  color: var(--text-primary);
}

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.4rem;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: 50px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.cart-btn:hover {
  background: rgba(124, 58, 237, 0.3);
  border-color: var(--accent-purple);
  box-shadow: var(--glow-purple);
  transform: translateY(-1px);
}

.cart-btn svg {
  width: 18px;
  height: 18px;
}

#cart-badge {
  display: none;
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--accent-pink), var(--accent-purple));
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 700;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  animation: badgePop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes badgePop {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

/* ---------- ヒーロー ---------- */
.hero {
  padding: 5rem 2.5rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-block;
  padding: 0.35rem 1.1rem;
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 0%, #c4b5fd 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 550px;
  margin: 0 auto;
}

/* ---------- セクション ---------- */
.section {
  padding: 2rem 2.5rem 5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
}

/* ---------- カテゴリグリッド ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.category-card {
  position: relative;
  display: block;
  text-decoration: none;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
  group: true;
}

.category-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-purple), var(--shadow-hover);
  transform: translateY(-6px);
}

.category-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.category-card:hover .category-card-img {
  transform: scale(1.05);
}

.category-card-body {
  padding: 1.5rem;
}

.category-card-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.category-card-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.category-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.6;
}

.category-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.category-badge {
  background: rgba(124, 58, 237, 0.15);
  border: 1px solid rgba(124, 58, 237, 0.3);
  color: var(--accent-purple);
  border-radius: 50px;
  padding: 0.3rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.category-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 50%;
  transition: var(--transition);
}

.category-card:hover .category-arrow {
  transform: translateX(4px);
}

.category-arrow svg {
  width: 18px;
  height: 18px;
  color: white;
}

/* ---------- 商品カード ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-purple), var(--shadow-hover);
  transform: translateY(-4px);
}

.product-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
  color: white;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.product-card-img-wrap {
  position: relative;
  overflow: hidden;
  height: 210px;
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card-img {
  transform: scale(1.06);
}

.product-card-body {
  padding: 1.25rem;
}

.product-card-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.product-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.product-price {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.price-unit {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  -webkit-text-fill-color: var(--text-secondary);
}

.btn-add-cart {
  flex: 1;
  padding: 0.7rem 1rem;
  background: linear-gradient(135deg, var(--accent-purple), #4f46e5);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
}

.btn-add-cart:hover {
  background: linear-gradient(135deg, #6d28d9, #4338ca);
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.5);
  transform: translateY(-2px);
}

.btn-add-cart:active {
  transform: translateY(0);
}

.btn-add-cart svg {
  width: 16px;
  height: 16px;
}

/* ---------- ページヘッダー ---------- */
.page-header {
  position: relative;
  overflow: hidden;
  height: 320px;
  display: flex;
  align-items: flex-end;
}

.page-header-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-header-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg-primary) 0%, rgba(9,9,15,0.3) 60%, transparent 100%);
}

.page-header-content {
  position: relative;
  z-index: 2;
  padding: 2.5rem;
  width: 100%;
}

.page-header-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--text-secondary);
}

/* ---------- カートページ ---------- */
.cart-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  transition: var(--transition);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.cart-item:hover {
  border-color: var(--border-hover);
}

.cart-item-img {
  width: 90px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.cart-item-info {
  flex: 1;
  min-width: 0;
}

.cart-item-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.cart-item-category {
  font-size: 0.8rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.cart-item-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.qty-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 0.25rem;
}

.qty-btn {
  width: 32px;
  height: 32px;
  background: rgba(124, 58, 237, 0.2);
  border: none;
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}

.qty-btn:hover {
  background: var(--accent-purple);
}

.qty-value {
  min-width: 28px;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
}

.btn-remove {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  color: #ef4444;
  padding: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}

.btn-remove:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: #ef4444;
}

.btn-remove svg {
  width: 18px;
  height: 18px;
}

/* ---------- カートサマリー ---------- */
.cart-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.summary-row:last-of-type {
  border-bottom: none;
}

.summary-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  font-size: 1.3rem;
  font-weight: 800;
}

.summary-total-price {
  font-size: 1.8rem;
  background: linear-gradient(135deg, #fff, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- ボタン ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--accent-purple), #4f46e5);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  margin-top: 1.5rem;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #6d28d9, #4338ca);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

/* ---------- チェックアウト ---------- */
.checkout-page {
  max-width: 700px;
  margin: 0 auto;
  padding: 2.5rem;
}

.checkout-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.checkout-step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.step-num {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.payment-methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.payment-option {
  position: relative;
}

.payment-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.payment-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.payment-label:hover {
  border-color: rgba(124, 58, 237, 0.3);
}

.payment-option input:checked + .payment-label {
  border-color: var(--accent-purple);
  background: rgba(124, 58, 237, 0.1);
  box-shadow: 0 0 0 1px var(--accent-purple);
}

.payment-icon {
  font-size: 2rem;
}

.payment-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.payment-coming-soon {
  font-size: 0.7rem;
  color: var(--accent-cyan);
  background: rgba(6,182,212,0.1);
  padding: 0.1rem 0.5rem;
  border-radius: 50px;
}

/* ---------- 空カート ---------- */
.empty-cart {
  text-align: center;
  padding: 5rem 2rem;
}

.empty-cart-icon {
  font-size: 5rem;
  margin-bottom: 1.5rem;
  opacity: 0.5;
}

.empty-cart h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.empty-cart p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ---------- フッター ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem 1.25rem;
  }
  .hero {
    padding: 3rem 1.25rem 2rem;
  }
  .section {
    padding: 1.5rem 1.25rem 3rem;
  }
  .product-grid,
  .category-grid {
    grid-template-columns: 1fr;
  }
  .cart-item {
    flex-wrap: wrap;
  }
  .form-row,
  .payment-methods {
    grid-template-columns: 1fr;
  }
  .cart-page,
  .checkout-page {
    padding: 1.25rem;
  }
}