/* ========== ベースリセット ========== */
* {
  box-sizing: border-box;
}
body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background-color: #f5f5f5;
  color: #333;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

/* ========== コンテナ中央寄せ ========== */
.container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  height: 60vh; /* 縦方向中央寄せ */
  padding: 10px;
}

/* ========== フォームカード ========== */
.form-card {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  max-width: 500px;
  width: 100%;
  text-align: center;
}

/* ========== タイトル ========== */
.form-card h1 {
  margin-bottom: 20px;
  font-size: 1.6em;
  color: #2c3e50;
}

/* ========== 入力フィールド ========== */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}
.form-group label {
  display: block;
  font-weight: bold;
  margin-bottom: 6px;
  color: #444;
}
.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1em;
}

/* ========== ボタン ========== */
button {
  background-color: #2d6a4f; /* 落ち着いた緑 */
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.3s ease;
}
button:hover {
  background-color: #1b4332;
}

/* ヘッダータイトルを中央寄せ */
.site-header {
  text-align: center;
  padding: 10px 0;
  margin-bottom: 10px;
  background: #f5f5f5; /* 背景はお好みで */
}

.site-title {
  margin: 0;
  font-size: 1.6em;
  color: #2c3e50;
}

/* フッター全体を中央寄せ */
.site-footer {
  text-align: center;
  padding: 5px 0;
  margin-top: 10px;
  background: #f5f5f5;
  font-size: 0.9em;
  color: #555;
}

.site-footer p {
  margin: 0;
}

.back-home {
  margin-top: 15px;
  text-align: center;
}

.back-home a {
  color: #2d6a4f;
  text-decoration: none;
  font-weight: bold;
}

.back-home a:hover {
  text-decoration: underline;
}