* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to bottom right, #dee4e7, #c1d0dc);
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.form-container {
    background-color: #ffffff;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 420px;
    transition: all 0.3s ease-in-out;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
    color: #333;
}

.form-authentication label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-authentication input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.form-authentication input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

button {
    width: 100%;
    padding: 0.8rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease-in-out;
}

button:hover {
    background-color: #43a047;
}

.opposite-page-link {
    font-size: 0.95rem;
    text-align: center;
    margin-top: 16px;
    color: #555;
  }
  
  .opposite-page-link a {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
  }
  
  .opposite-page-link a:hover {
    color: #0056b3;
    text-decoration: underline;
  }