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

body{

font-family:Segoe UI,Arial,sans-serif;

background:#eef2f7;

}

.topbar{

height:70px;

background:#0f172a;

color:#fff;

display:flex;

justify-content:space-between;

align-items:center;

padding:0 25px;

}

.logo{

font-size:28px;

font-weight:bold;

}

.container{

display:flex;

min-height:calc(100vh - 70px);

}

.sidebar{

width:250px;

background:#1e293b;

}

.sidebar ul{

list-style:none;

}

.sidebar li{

border-bottom:1px solid rgba(255,255,255,.05);

}

.sidebar a{

display:block;

padding:18px 20px;

color:#fff;

text-decoration:none;

}

.sidebar a:hover{

background:#2563eb;

}

.content{

flex:1;

padding:30px;

}

.footer{

background:#0f172a;

color:#fff;

padding:15px;

text-align:center;

}

.cards{

display:grid;

grid-template-columns:repeat(4,1fr);

gap:20px;

margin-bottom:30px;

}

.card{

background:#fff;

padding:25px;

border-radius:10px;

box-shadow:0 5px 15px rgba(0,0,0,.08);

}

.card h3{

margin-bottom:15px;

color:#555;

}

.card h1{

font-size:42px;

color:#2563eb;

}

.panel{

background:#fff;

padding:25px;

border-radius:10px;

box-shadow:0 5px 15px rgba(0,0,0,.08);

margin-bottom:20px;

}

.table{

width:100%;

border-collapse:collapse;

background:#fff;

}

.table th{

background:#1e293b;

color:#fff;

padding:14px;

text-align:left;

}

.table td{

padding:14px;

border-bottom:1px solid #e5e7eb;

}

.table tr:hover{

background:#f8fafc;

}

.btn{

display:inline-block;

padding:10px 20px;

background:#2563eb;

color:#fff;

text-decoration:none;

border-radius:6px;

font-weight:bold;

}

.btn:hover{

background:#1d4ed8;

}

.form-group label{

display:block;

font-weight:bold;

margin-bottom:8px;

}

.form-control{

width:100%;

padding:12px;

border:1px solid #d1d5db;

border-radius:6px;

font-size:15px;

}

.btn-secondary{

background:#6b7280;

margin-left:10px;

}

.btn-secondary:hover{

background:#4b5563;

}

.login-box{

display:flex;

justify-content:center;

align-items:center;

height:80vh;

}

.login-card{

width:420px;

background:#fff;

padding:40px;

border-radius:12px;

box-shadow:0 10px 30px rgba(0,0,0,.12);

}

.alert{

background:#fee2e2;

color:#b91c1c;

padding:12px;

border-radius:6px;

margin-bottom:20px;

}

.topbar{
    display:flex;
    justify-content:space-between;
    align-items:center;

    background:#0f172a;
    color:#fff;

    padding:18px 30px;
}

.logo{
    font-size:18px;
    font-weight:700;
}

.top-right{
    display:flex;
    align-items:center;
    gap:18px;
}

.version{
    opacity:.8;
}

.user{
    font-weight:600;
}

.logout-btn{

    background:#dc2626;

    color:#fff;

    text-decoration:none;

    padding:9px 16px;

    border-radius:6px;

    transition:.25s;
}

.logout-btn:hover{

    background:#b91c1c;

}