/* -------------------------------
   共通設定：背景 / フォント
-------------------------------- */
body {
    background-color: #f6f7fb;
    font-family: 'Nunito', sans-serif;
  }
  
  /* -------------------------------
     ロゴ
  -------------------------------- */
  .logo {
    text-align: center;
    margin: 3em auto 1em;
  }
  /* -------------------------------
     ソーシャルログインボタン
  -------------------------------- */
  .line-button {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    width: 100%;
    max-width: 360px;
    margin: 0.5em auto;
    padding: 10px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    text-decoration: none;
    transition: background 0.2s ease;
  }
  .line-button:hover {
    background-color: #f1f1f1;
  }
  .line-icon {
    width: 24px;
    height: 24px;
  }
  .separator {
    display: none;
  }
  
  /* -------------------------------
     認証フォーム全体のカードスタイル
  -------------------------------- */
  .w-full.sm\:max-w-md.mt-6.px-6.py-4.bg-white.shadow-md.overflow-hidden.sm\:rounded-lg {
    background: #fff;
    padding: 2rem 0;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    margin: 2em auto 4em;
    width: 100%;
    max-width: 400px;
  }
  
  /* -------------------------------
     フォーム要素（共通）
  -------------------------------- */
  .auth-form .form-label,
  label {
    font-weight: 600;
    color: #333;
  }
  .auth-form .form-control,
  input[type="email"],
  input[type="password"] {
    width: 100%;
    border-radius: 6px;
    padding: 10px 12px;
    border: 1px solid #ccc;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s;
    box-sizing: border-box;
  }
  .auth-form .form-control:focus,
  input[type="email"]:focus,
  input[type="password"]:focus {
    border-color: #1cb4a7;
    box-shadow: 0 0 0 0.2rem rgba(55, 99, 182, 0.15);
  }
  
  .auth-form .mb-3 {
    margin-bottom: 1.2rem;
  }
  .auth-form .form-check-label {
    font-size: 0.95rem;
  }
  
  /* -------------------------------
     ボタン・リンクの配置とデザイン
  -------------------------------- */
  .auth-form .align-items-center {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    margin-top: 1.5rem;
  }
  .auth-form .btn.btn-dark.w-90,
  button[type="submit"] {
    width: 100%;
    text-align: center;
    padding: 0.75rem;
    border-radius: 8px;
    background-color: #1cb4a7;
    color: white;
    border: none;
    font-weight: bold;
    transition: background-color 0.2s ease;
  }
  .auth-form .btn.btn-dark.w-90:hover,
  button[type="submit"]:hover {
    background-color: #15998d;
  }
  
  .auth-form a.text-sm,
  .auth-form a {
    font-size: 0.9rem;
    color: #555;
    text-decoration: none;
  }
  .auth-form a.text-sm:hover,
  .auth-form a:hover {
    color: #000;
    text-decoration: underline;
  }
  
  /* -------------------------------
     区切りテキスト「または」
  -------------------------------- */
  .mataha {
    text-align: center;
    font-size: 14px;
    color: #888;
    margin: 2em 0 1em;
  }
  
  .d-flex{
    margin: 1em auto;
  }
  .w-full.sm\:max-w-md.mt-6.px-6.py-4.bg-white.shadow-md.overflow-hidden.sm\:rounded-lg
  {
    padding: 2em 0.5em;
    width: 90%;
  }
  .mb-3{
    margin: 1em auto;
  }