*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{

    font-family:Arial, Helvetica, sans-serif;

    background:#f4f6f9;

    display:flex;

    justify-content:center;

    align-items:center;

    height:100vh;

}

.container{

    width:600px;

    text-align:center;

}

h1{

    margin-bottom:30px;

    color:#333;

}

.drop-zone{

    border:3px dashed #0078d4;

    border-radius:15px;

    background:white;

    padding:50px;

    transition:0.3s;

}

.drop-zone h2{

    color:#0078d4;

    margin-bottom:15px;

}

.drop-zone p{

    color:#666;

    margin:15px 0;

}

.choose-btn{

    background:#0078d4;

    color:white;

    border:none;

    padding:12px 24px;

    border-radius:8px;

    cursor:pointer;

    font-size:16px;

}

.choose-btn:hover{

    background:#005fa3;

}

.upload-btn{

    margin-top:25px;

    width:100%;

    padding:15px;

    border:none;

    border-radius:8px;

    background:#16a34a;

    color:white;

    font-size:18px;

    cursor:pointer;

}

.upload-btn:hover{

    background:#15803d;

}

.dragover{

    border-color:#16a34a;

    background:#ecfdf5;

}

#selectedFile{

    margin-top:20px;

    font-weight:bold;

    color:#444;

}

footer{

    margin-top:30px;

    color:#666;

    font-size:14px;

    text-align:center;

}