main {
  background-color: #bfbfff; /* デザインに合わせた淡い水色の背景 */
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.contact-container {
  width: 100%;
  max-width: 1100px;
  margin-top: 6rem;
}

/* ヘッダーテキスト */
.contact-header-text {
  text-align: center;
  margin-bottom: 40px;
}

.contact-header-text h1 {
  font-size: 2.5rem;
  color: #333;
  margin-bottom: 10px;
}

.contact-header-text p {
  color: #666;
  line-height: 1.6;
}

/* フォームカードのレイアウト */
.contact-card {
  background: #fff;
  display: flex;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

/* 左側：連絡先情報 */
.contact-info {
  background-color: #7879ff; /* 特徴的なティールカラー */
  color: #fff;
  padding: 60px 40px;
  flex: 1;
  position: relative;
  overflow: hidden;
}

.contact-info h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.contact-info p {
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 40px;
  opacity: 0.9;
}

.info-list {
  list-style: none;
}

.info-list li {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 30px;
  font-size: 1rem;
}

.info-list li i {
  font-size: 1.2rem;
}

.info-list li div span {
  display: block;
  margin-bottom: 5px;
}

/* 装飾用の半透明な円 */
.circle-deco {
  position: absolute;
  bottom: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

/* 右側：フォーム入力エリア */
.contact-form-container {
  padding: 60px 50px;
  flex: 2;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 8px;
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  border: none;
  border-bottom: 2px solid #e0e0e0;
  padding: 10px 0;
  font-size: 1rem;
  color: #333;
  outline: none;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #00c2ab;
}

.form-group textarea {
  resize: none;
}

.full-width {
  margin-bottom: 40px;
}

/* 送信ボタン */
.submit-btn {
  background-color: #7879ff;
  color: #fff;
  border: none;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.3s,
    transform 0.2s;
}

.submit-btn:hover {
  background-color: #00a894;
  transform: translateY(-2px);
}

/* レスポンシブ対応 (タブレット・スマホ) */
@media (max-width: 900px) {
  .contact-card {
    flex-direction: column;
  }

  .contact-info {
    padding: 40px;
  }

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

@media (max-width: 600px) {
  .header-text h1 {
    font-size: 1.8rem;
  }

  .contact-form-container {
    padding: 40px 20px;
  }
}