/* ===================================
   リセット・基本設定
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Yu Gothic', '游ゴシック', 'Hiragino Sans', sans-serif;
  color: #3E3E3E;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   メインセクション
   =================================== */

.hero {
  background-color: #FAF7F2;
  padding: 80px 20px;
  text-align: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ===================================
   ブランド名・タグライン
   =================================== */

.brand-name {
  font-family: 'Yu Mincho', '游明朝', 'Hiragino Mincho ProN', serif;
  font-size: 48px;
  font-weight: 300;
  color: #3E3E3E;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.tagline {
  font-family: 'Yu Gothic', '游ゴシック', 'Hiragino Sans', sans-serif;
  font-size: 16px;
  font-weight: 400;
  color: #5D4E37;
  margin-bottom: 60px;
}

/* ===================================
   色カードコレクション
   =================================== */

.color-cards {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.card {
  width: 160px;
  text-align: center;
}

.card-color {
  width: 160px;
  height: 200px;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* ホバーエフェクト */
.card:hover .card-color {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card-number {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 12px;
  color: #8B8B8B;
  margin-bottom: 5px;
}

.card-name-ja {
  font-family: 'Yu Gothic', '游ゴシック', 'Hiragino Sans', sans-serif;
  font-size: 18px;
  font-weight: 500;
  color: #3E3E3E;
  margin-bottom: 3px;
}

.card-name-en {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  color: #8B8B8B;
  margin-bottom: 8px;
}

.card-material {
  font-family: 'Yu Gothic', '游ゴシック', 'Hiragino Sans', sans-serif;
  font-size: 13px;
  color: #5D4E37;
}

/* ===================================
   メッセージ
   =================================== */

.message {
  font-family: 'Yu Mincho', '游明朝', 'Hiragino Mincho ProN', serif;
  font-size: 18px;
  line-height: 2em;
  color: #3E3E3E;
  margin-bottom: 40px;
}

.message p {
  margin: 0;
}

/* ===================================
   ブランドフッター
   =================================== */

.brand-footer {
  font-family: 'Yu Gothic', '游ゴシック', 'Hiragino Sans', sans-serif;
  font-size: 14px;
  color: #8B8B8B;
  line-height: 1.8;
}

.brand-footer p {
  margin: 0;
}

/* ===================================
   レスポンシブ対応（タブレット）
   =================================== */

@media (max-width: 1024px) {
  .color-cards {
    gap: 15px;
  }
  
  .card {
    width: 140px;
  }
  
  .card-color {
    width: 140px;
    height: 180px;
  }
}

/* ===================================
   レスポンシブ対応（スマホ）
   =================================== */

@media (max-width: 768px) {
  .hero {
    padding: 40px 20px;
  }
  
  .brand-name {
    font-size: 36px;
    margin-bottom: 8px;
  }
  
  .tagline {
    font-size: 14px;
    margin-bottom: 40px;
  }
  
  .color-cards {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }
  
  .card {
    width: 240px;
  }
  
  .card-color {
    width: 240px;
    height: 300px;
  }
  
  .card-name-ja {
    font-size: 20px;
  }
  
  .card-name-en {
    font-size: 12px;
  }
  
  .card-material {
    font-size: 14px;
  }
  
  .message {
    font-size: 16px;
    padding: 0 10px;
    margin-bottom: 30px;
  }
  
  .brand-footer {
    font-size: 13px;
  }
}

/* ===================================
   アニメーション（オプション）
   =================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand-name,
.tagline,
.card,
.message,
.brand-footer {
  animation: fadeInUp 0.8s ease-out forwards;
  opacity: 0;
}

.brand-name {
  animation-delay: 0.1s;
}

.tagline {
  animation-delay: 0.2s;
}

.card:nth-child(1) {
  animation-delay: 0.3s;
}

.card:nth-child(2) {
  animation-delay: 0.4s;
}

.card:nth-child(3) {
  animation-delay: 0.5s;
}

.card:nth-child(4) {
  animation-delay: 0.6s;
}

.card:nth-child(5) {
  animation-delay: 0.7s;
}

.message {
  animation-delay: 0.8s;
}

.brand-footer {
  animation-delay: 0.9s;
}