body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

#main-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    margin: 20px auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #333;
}

p {
    color: #666;
}

#drop-area {
    border: 2px dashed #ccc;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
    transition: border-color 0.3s;
}

#drop-area.dragover {
    border-color: #333;
}

.custom-file-upload {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    display: inline-block;
    margin-top: 10px;
}

#file-list {
    width: 100%;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 20px;
}

#file-list div {
    padding: 5px;
    border-bottom: 1px solid #eee;
}

#uploadButton {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#uploadButton:hover {
    background-color: #555;
}

#status {
    margin-top: 10px;
    font-size: 1.2rem;
    color: #333;
}

#progress-container {
    width: 100%;
    margin-top: 10px;
}

progress {
    width: 100%;
    height: 20px;
    margin-bottom: 10px;
}