body {
        background-color: #1e88e5;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    .login-container {
        max-width: 450px;
        width: 100%;
        margin: 0 auto;
    }
    .login-card {
        border-radius: 10px;
        box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
        overflow: hidden;
        border: none;
    }
    .login-header {
        background-color: white;
        padding: 1.5rem;
        text-align: center;
        border-bottom: 1px solid #eee;
    }
    .login-icon {
        font-size: 3rem;
        color: #1e88e5;
        margin-bottom: 1rem;
    }
    .login-title {
        color: #333;
        font-weight: 600;
        margin: 0;
    }
    .login-body {
        padding: 2rem;
        background-color: white;
    }
    /* Allineamento input fissato */
    .form-group {
        margin-bottom: 1.25rem;
    }
    .form-control {
        border-radius: 5px;
        padding: 10px 15px;
        border: 1px solid #ddd;
        width: 100%; /* Larghezza fissa */
    }
    .form-control:focus {
        border-color: #1e88e5;
        box-shadow: 0 0 0 0.2rem rgba(30, 136, 229, 0.25);
    }
    .login-footer {
        text-align: center;
        margin-top: 2rem;
        color: white;
        font-size: 0.9rem;
    }
    /* Stile popup personalizzato */
    .error-popup {
        position: fixed;
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
        background-color: #ff4444;
        color: white;
        padding: 15px 25px;
        border-radius: 5px;
        box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
        z-index: 1000;
        display: none;
    }