body {
      margin: 0;
      font-family: Arial, sans-serif;
      background-color: #7a7a7a; /* gris medio como dijiste */
    }

    .encabezadoadmi {
      background-color: #0b3d2e;
      color: #fff;
      padding: 20px;
      text-align: center;
    }

    .menu-lateral {
      position: fixed;
      top: 0;
      left: 0;
      width: 220px;
      height: 100%;
      background-color: #0b3d2e;
      color: white;
      padding: 20px 10px;
      box-shadow: 2px 0 10px rgba(0,0,0,0.4);
    }

    .menu-lateral h2 {
      text-align: center;
      margin-bottom: 30px;
    }

    .menu-lateral a {
      display: block;
      color: white;
      text-decoration: none;
      padding: 12px 20px;
      margin: 5px 0;
      border-radius: 5px;
      transition: background 0.3s;
    }

    .menu-lateral a:hover {
      background-color: #145e46;
    }

    .contenido {
      margin-left: 240px;
      padding: 30px;
    }
  .login-container {
    background-color: #f0f0f0;
    width: 80%;
    max-width: 500px;
    margin: 100px auto; /* centrado horizontal con margen arriba */
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    text-align: center;
}

    .login-container h2 {
      text-align: center;
      margin-bottom: 20px;
    }

    .login-container form {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .login-container label {
      font-weight: bold;
    }

    .login-container input {
      padding: 10px;
      border: 1px solid #ccc;
      border-radius: 5px;
    }

    .login-container button {
      padding: 10px;
      background-color: #0b3d2e;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
    }

    .login-container button:hover {
      background-color: #145e46;
    }