body {
  font-family: sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
}

header {
  display: flex;
  align-items: center;
  padding: 0 1rem;
  background-color: #0a50a0;
  background-image: url('../img/head_03.gif');
  background-repeat: repeat;
  background-position: right center;
}

main {
  max-width: 700px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

h1 {
  margin-top: 0;
}

label {
  display: block;
  margin-bottom: 0.8rem;
  font-weight: bold;
}

/* デフォルトのフォーム要素 */
input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.3rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

textarea {
  resize: vertical;
}

.required {
  color: red;
  margin-left: 0.3rem;
}

/* --- 電話番号 --- */
.phone-group {
  display: flex;
  flex-direction: column;
}

.phone-inputs {
  display: flex;
  gap: 0.3em;
  align-items: center;
}

.phone-inputs input.tel-input {
  width: 4em;
  padding: 5px;
  font-size: 1rem;
  text-align: center; /* 電話番号は中央寄せ */
}

.hyphen {
  font-size: 1rem;
  line-height: 1;
}

/* --- お名前・フリガナ --- */
.name-group,
.rubi-group {
  display: flex;
  gap: 0.5rem;
}

.name-group input,
.rubi-group input {
  flex: 1;
  width: auto;
  min-width: 8em;
  text-align: left;
}

/* --- インターネット接続環境 --- */
select[name="connect"] {
  width: 12em;
}

/* --- メールアドレス --- */
.email-group {
  display: flex;
  flex-direction: column; /* 上下に並べる */
  gap: 0.5rem;
}

.email-group input {
  width: 22em;
  text-align: left; /* 左寄せ */
}

/* --- シリアルID --- */
input[name="serial"] {
  width: 32ch;             /* 32文字分の幅 */
  font-family: monospace;  /* 等幅で見やすい */
  text-align: left;
}

/* --- 製品バージョン & OS --- */
input[name="version"] {
  width: 16em;
}

select[name="os"] {
  width: 12em;
}

.form-actions {
  margin-top: 1.5rem;
  text-align: center;
}

button {
  padding: 0.6rem 1.5rem;
  font-size: 1rem;
  margin: 0 0.5rem;
  cursor: pointer;
}

.note {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

footer {
  text-align: center;
  font-size: 0.8rem;
  color: #777;
  margin: 3rem auto;
}

a {
  color: #0000cc;
  text-decoration: underline;
}

a:hover {
  color: #ff723c;
}

.form-info {
  background: #f8f8f8;
  padding: 1.2rem;
  border-left: 4px solid #0a50a0;
  margin-bottom: 2rem;
}

.form-info h2 {
  font-size: 1.2rem;
  margin-top: 0;
}

.form-info ul {
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

.confirmation-box {
  background-color: #f9f9f9;
  border: 1px solid #ccc;
  padding: 24px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.form-row .label {
  font-weight: bold;
  color: #0A50A0;
  margin-bottom: 4px;
}

.form-row .value {
  background-color: #fff;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 15px;
  white-space: pre-wrap;
}

/* --- 個人情報の取り扱いについて（h2調整） --- */
h2 {
  font-size: 1.1rem;     /* 少し小さめ */
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  color: #0a50a0;        /* ブランドカラーで統一感 */
  border-bottom: 2px solid #ddd; /* 下線で区切る */
  padding-bottom: 0.3rem;
}

/* error styling */
.error-list {
  color: #d00;
  list-style: disc inside;
  margin-bottom: 1rem;
}