body{
    margin:0;
    font-family:Arial, Helvetica, sans-serif;
    background:#f4f6f9;
}

.sidebar{
    position:fixed;
    width:220px;
    height:100%;
    background:#1f2937;
    padding:20px;
}

.sidebar h2{
    color:white;
    margin-bottom:30px;
}



    .sidebar a{
    display:block;
    color:#cbd5e1;
    padding:10px;
    text-decoration:none;
    border-radius:6px;
    margin-bottom:6px;
}

.sidebar a:hover{
    background:#374151;
    color:white;
}

.main{
    margin-left:240px;
    padding:30px;
}

.card{
    background:white;
    padding:20px;
    border-radius:10px;
    box-shadow:0 2px 8px rgba(0,0,0,0.08);
    margin-bottom:20px;
}

.table{
    width:100%;
    border-collapse:collapse;
}

.table th{
    background:#f1f5f9;
    text-align:left;
    padding:10px;
}

.table td{
    padding:10px;
    border-top:1px solid #e5e7eb;
}

.btn{
    background:#2563eb;
    color:white;
    padding:8px 14px;
    border:none;
    border-radius:6px;
    cursor:pointer;
}

.btn:hover{
    background:#1d4ed8;
}

.btn-danger{
    background:#dc2626;
}

.btn-danger:hover{
    background:#b91c1c;
}

input, select{
    padding:8px;
    border:1px solid #d1d5db;
    border-radius:6px;
    width:100%;
}

.form-group{
    margin-bottom:15px;
}