/* ========================
   Signup フォーム全体
   ======================== */
.signup {
  display: flex;
  justify-content: center;
  padding: 3rem 1rem;
  background-color: #f9fafb;
}

.signup-wrapper {
  width: 100%;
  max-width: 640px;
  background-color: #ffffff;
  padding: 2rem 2.5rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  box-sizing: border-box;
}

/* ========================
   見出し
   ======================== */
.signup-wrapper .content-header {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
  color: #111827;
}

/* ========================
   各 fieldset（メール／パス）
   ======================== */
.signup-wrapper fieldset {
  margin-bottom: 1.5rem;
  border: none;
  padding: 0;
}

.signup-wrapper label {
  display: inline-block;
  margin: 0 0.5rem 0.5rem 0;
  font-weight: 600;
  color: #374151;
}

.su-requiretext {
  display: inline-block;      /* label と横並びにする */
  background-color: #ef4444;  /* 赤系背景 */
  color: white;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
  vertical-align: middle;
  line-height: 1.2;
}

.signup-wrapper input[type="email"],
.signup-wrapper input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  font-size: 1rem;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.signup-wrapper input[type="email"]:focus,
.signup-wrapper input[type="password"]:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* パスワード長さの表示 */
.signup-wrapper em {
  font-size: 0.85rem;
  color: #6b7280;
  display: block;
  margin-top: 0.25rem;
}

/* ========================
   Submitボタン
   ======================== */
.su-submit {
  text-align: center;
  margin: 2rem auto 60px;
}

.su-submit-agreetext {
  color: #777;
  display: block;
  margin-bottom: 8px;
  text-align: center;
}
.su-submit-agreetext a {
  text-decoration: underline;
}

.su-submit input[type="submit"] {
  background: #000 !important;
  color: #fff;
  border: none;
  padding: 0.75rem 4rem;
  font-size: 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.su-submit input[type="submit"]:hover {
  background-color: #1e40af;
}