/* 診断ページ */
/* 診断画面全体のコンテナ */
.diagnosis-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1rem;
  background: linear-gradient(135deg, #d4f1f9 0%, #e8f5f9 100%); /* 水色→明るい水色 */
  min-height: 100vh;
}

/* ヘッダーセクション */
.diagnosis-header {
  text-align: center;
  margin-bottom: 3rem;
  padding: 2.5rem 2rem;
  background: linear-gradient(135deg, #a8daeb 0%, #c8e6f5 100%); /* パステル水色 */
  border-radius: 20px;
  color: #4a5568; /* 濃いグレー */
  box-shadow: 0 10px 30px rgba(168, 218, 235, 0.3);
  border: 5px solid #fff;
}

.diagnosis-header h1 {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  line-height: 1.4;
  text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.8); /* 柔らかい影 */
}

.diagnosis-header p {
  font-size: 1.3rem;
  opacity: 0.95;
  line-height: 1.5;
}

/* 質問カード */
.questions-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.question-card {
  background: white;
  border: 5px solid #a8daeb; /* パステル水色 */
  border-radius: 20px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(168, 218, 235, 0.2);
}

.question-card:hover {
  border-color: #7fc8e3; /* 少し濃い水色 */
  box-shadow: 0 12px 30px rgba(127, 200, 227, 0.3);
  transform: translateY(-5px) scale(1.02);
}

/* 質問ヘッダー */
.question-header {
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 3px solid #a8daeb;
}

.question-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #a8daeb 0%, #7fc8e3 100%);
  color: white;
  font-weight: bold;
  font-size: 1.5rem;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 6px 15px rgba(168, 218, 235, 0.3);
  border: 3px solid white;
}

.question-text {
  font-size: 1.3rem;
  font-weight: 700;
  color: #5fb3d1; /* 柔らかい水色 */
  line-height: 1.6;
  margin: 0;
  padding-top: 0.5rem;
}

/* 選択肢リスト（縦並び） */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.option-label {
  display: block;
  cursor: pointer;
  position: relative;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, #f0f9fc 0%, #f7fcfe 100%); /* ほぼ白に近い水色 */
  border: 3px solid #a8daeb;
  border-radius: 15px;
  transition: all 0.2s ease;
}

.option-label:hover {
  background: linear-gradient(135deg, #e1f5fb 0%, #ecf9fd 100%);
  border-color: #7fc8e3;
  transform: translateX(10px) scale(1.05);
  box-shadow: 0 6px 20px rgba(127, 200, 227, 0.3);
}

.option-radio {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

/* ラジオボタンが選択された時 */
.option-radio:checked + .option-content {
  font-weight: 700;
  color: #5fb3d1;
}

.option-label:has(.option-radio:checked) {
  background: linear-gradient(135deg, #a8daeb 0%, #7fc8e3 100%);
  border-color: #fff;
  box-shadow: 0 8px 25px rgba(168, 218, 235, 0.4);
  color: white;
}

.option-label:has(.option-radio:checked) .option-content {
  color: white;
}

.option-content {
  display: block;
  font-size: 1.1rem;
  color: #5a5a5a; /* 柔らかいグレー */
  line-height: 1.6;
}

/* 送信ボタンセクション */
.submit-section {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 3px solid white;
}

.btn-submit {
  background: linear-gradient(135deg, #a8daeb 0%, #7fc8e3 100%);
  color: white;
  font-size: 1.5rem;
  font-weight: bold;
  padding: 1.5rem 5rem;
  border: 5px solid white;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(168, 218, 235, 0.4);
  text-transform: uppercase;
}

.btn-submit:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 15px 40px rgba(127, 200, 227, 0.5);
}

.btn-submit:active {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 25px rgba(168, 218, 235, 0.6);
}