html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #111;
    font-family: sans-serif;
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #111;
    color: #fff;
    font-size: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

#progress-container {
    width: 80%;
    max-width: 400px;
    height: 12px;
    background-color: #333;
    border-radius: 6px;
    margin-top: 20px;
    overflow: hidden;
    position: relative;
}

#progress-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, #0f0 0%, #060 50%, #0f0 100%);
    background-size: 200% 100%;
    animation: loadingBar 1.5s linear infinite;
}

@keyframes loadingBar {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}