body{
    margin:0;
    font-family:Arial;
    background:#0d1117;
    color:white;
}

.topbar{
    height:70px;
    background:#161b22;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 20px;
}

.left{
    display:flex;
    gap:10px;
    align-items:center;
}

.avatar{
    width:42px;
    height:42px;
    border-radius:50%;
}

.board{
    display:flex;
    gap:20px;
    padding:20px;
    overflow-x:auto;
    height:calc(100vh - 70px);
}

.column{
    min-width:300px;
    background:#161b22;
    padding:15px;
    border-radius:16px;
}

.cards{
    min-height:50px;
}

.card{
    background:#21262d;
    padding:12px;
    border-radius:12px;
    margin-bottom:10px;
}

.card.done{
    background:#14532d;
}

button{
    border:none;
    padding:10px;
    border-radius:10px;
    cursor:pointer;
}