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

body {
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.8;
  color: #4a4a4a;
  -webkit-font-smoothing: antialiased;
}

/* 温かみのあるアニメーション */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

/* 柔らかいシャドウ */
.soft-shadow {
  box-shadow: 0 4px 20px rgba(139, 115, 85, 0.1);
}

/* ホバーエフェクト */
.gentle-hover {
  transition: all 0.3s ease;
}

.gentle-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 25px rgba(139, 115, 85, 0.15);
}

/* ナビゲーション */
nav a {
  position: relative;
  transition: color 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: currentColor;
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

/* カスタムボタン */
.btn-primary {
  background: linear-gradient(135deg, #8B7355 0%, #A89075 100%);
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #A89075 0%, #8B7355 100%);
  box-shadow: 0 4px 15px rgba(139, 115, 85, 0.3);
}

.btn-secondary {
  background: linear-gradient(135deg, #A8C69F 0%, #8FB486 100%);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: linear-gradient(135deg, #8FB486 0%, #A8C69F 100%);
  box-shadow: 0 4px 15px rgba(168, 198, 159, 0.3);
}