body { 
        font-family: sans-serif; 
        background: #7a75ab; 
        display: flex; 
        justify-content: center; 
        align-items: center; 
        height: 100vh; 
        background-image: url('images/background.png');
        /* Ensure the image covers the entire screen without repeating */
        background-repeat: no-repeat;
        background-size: cover;
        background-position: center;
        background-attachment: fixed; /* Keeps background still while scrolling */
    }
    .login-container { 
            background: #fff; 
            padding: 20px; 
            border-radius: 8px; 
            box-shadow: 0 4px 8px rgba(0,0,0,0.1); 
    }
    .input-group { 
        margin-bottom: 15px; 
    }
    input { 
        width: 100%; 
        padding: 10px; 
        border-radius: 4px;
        border-width: thin;
        box-sizing: border-box; 
    }
    button { 
        width: 100%; 
        font-size: 1.2rem;
        padding: 10px; 
        background: #1821a3; 
        color: white; 
        border-radius: 4px;
        border: none; 
    }    
        .loader-container {
            text-align: center;
        }

        /* Элемент загрузки (вращающийся круг) */
        .loader {
            border: 8px solid #f3f3f3;
            border-top: 8px solid #3498db;
            border-radius: 50%;
            width: 60px;
            height: 60px;
            animation: spin 2s linear infinite;
            margin: 0 auto 20px;
        }

        /* Анимация вращения */
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }