/**
 * イズミコーポレーション メインCSS
 * 2025年10月7日作成
 */

/* Tailwind CSS CDN使用のため、@importは不要 */

/* カスタムCSS変数 */
:root {
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-secondary: #64748b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #06b6d4;

  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-text-primary: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);

  --border-radius: 0.5rem;
  --transition: all 0.2s ease-in-out;
}

/* ダークモード */
[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-border: #334155;
}

/* ベーススタイル */
* {
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, sans-serif;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: var(--transition);
}

/* ヘッダー */
.header {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  height: 3rem;
  transition: var(--transition);
}

.logo:hover {
  transform: scale(1.05);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

/* アクションボタン */
.action-buttons {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border);
}

.btn-icon {
  padding: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-icon:hover {
  background-color: var(--color-border);
  color: var(--color-text-primary);
}

/* ヒーローセクション */
.hero {
  background: linear-gradient(
    135deg,
    var(--color-bg-primary) 0%,
    var(--color-bg-secondary) 100%
  );
  padding: 4rem 0;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: inline-flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* 商品カード */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2rem 0;
}

.product-card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-bg-secondary);
}

.product-content {
  padding: 1.5rem;
}

.product-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.product-description {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

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

.product-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* カート */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background-color: var(--color-bg-primary);
  border-left: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  z-index: 100;
  overflow-y: auto;
}

.cart-sidebar.open {
  right: 0;
}

.cart-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cart-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.cart-close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
}

.cart-close:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.cart-content {
  padding: 1.5rem;
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

.cart-item-image {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.cart-item-details {
  flex: 1;
}

.cart-item-title {
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}

.cart-item-price {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cart-quantity {
  width: 60px;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  text-align: center;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.cart-remove {
  background: none;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 50%;
  transition: var(--transition);
}

.cart-remove:hover {
  background-color: var(--color-error);
  color: white;
}

.cart-total {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.cart-total-final {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* フォーム */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* 通知 */
.notification {
  position: fixed;
  top: 1rem;
  right: 1rem;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
}

.notification-success {
  background-color: var(--color-success);
  color: white;
}

.notification-error {
  background-color: var(--color-error);
  color: white;
}

.notification-info {
  background-color: var(--color-info);
  color: white;
}

.notification-warning {
  background-color: var(--color-warning);
  color: white;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ローディング */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* レスポンシブ */
@media (max-width: 768px) {
  .header-container {
    padding: 0 1rem;
  }

  .nav {
    display: none;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
  }

  .cart-sidebar {
    width: 100%;
    right: -100%;
  }

  .cart-sidebar.open {
    right: 0;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 2rem 0;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    margin-bottom: 1rem;
  }
}

/* アクセシビリティ */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* フォーカス表示 */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* スクリーンリーダー用 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 印刷用 */
@media print {
  .header,
  .cart-sidebar,
  .btn,
  .notification {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .product-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}