/* ------------------------------
   ログイン・登録画面のみ（portal.html では読み込まないこと）
   全局の body / button 指定はポータル左メニューを崩すため .portal-auth に限定
------------------------------ */
body.portal-auth {
  font-family: sans-serif;
  background: #f5f5f5;
  padding: 40px;
  display: flex;
  justify-content: center;
}

body.portal-auth .box {
  background: white;
  padding: 30px;
  border-radius: 8px;
  width: 320px;
  box-shadow: 0 0 10px rgba(0,0, 0, 0.1);
}

body.portal-auth .box input {
  width: 100%;
  padding: 10px;
  margin: 8px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

body.portal-auth button.main {
  width: 100%;
  padding: 10px;
  background: #0078d4;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 10px;
  font-weight: bold;
}

body.portal-auth .box > button:not(.main) {
  width: 100%;
  padding: 10px;
  background: #0078d4;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-top: 10px;
}

body.portal-auth .sub-buttons {
  margin-top: 20px;
  text-align: center;
}

body.portal-auth .sub-buttons button {
  width: 100%;
  padding: 8px;
  margin-top: 6px;
  background: white;
  color: #555;
  border: 1px solid #bbb;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}

body.portal-auth .sub-buttons button:hover {
  background: #f0f0f0;
}

body.portal-auth #msg {
  margin-top: 15px;
  color: #d00;
  font-size: 14px;
}