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

body{
    font-family:Arial,sans-serif;
    background:#050816;
    color:#fff;
}

.app-layout{
    display:flex;
    min-height:100vh;
}

.sidebar{
    width:260px;
    background:#0b1220;
    padding:24px;
    border-right:1px solid rgba(255,255,255,.08);
}

.logo{
    font-size:22px;
    font-weight:bold;
    margin-bottom:40px;
    color:#00d4ff;
}

.sidebar ul{
    list-style:none;
}

.sidebar li{
    margin-bottom:18px;
}

.sidebar a{
    color:#fff;
    text-decoration:none;
    transition:.3s;
}

.sidebar a:hover{
    color:#00d4ff;
}

.main-content{
    flex:1;
    display:flex;
    flex-direction:column;
}

.topbar{
    height:70px;
    background:#111827;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 24px;
    border-bottom:1px solid rgba(255,255,255,.08);
}

.content-area{
    flex:1;
    padding:24px;
}

.footer{
    height:60px;
    background:#0b1220;
    display:flex;
    align-items:center;
    justify-content:center;
    border-top:1px solid rgba(255,255,255,.08);
}