*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Segoe UI', Arial, sans-serif;
}

body{
    background:#f4f6f9;
}

.sidebar{
    width:250px;
    height:100vh;
    background:#1e293b;
    color:white;
    position:fixed;
    left:0;
    top:0;
    z-index:999;
    overflow-y:scroll;
    overflow-x:hidden;
}

.logo{
    padding:20px;
    text-align:center;
    font-size:22px;
    font-weight:bold;
    border-bottom:1px solid rgba(255,255,255,.2);
    white-space:nowrap;
}

.menu-list{
    list-style:none;
    padding:0;
    margin:0;
}

.menu-list li{
    list-style:none;
    margin:0;
    padding:0;
}

.menu-list li a,
.logout-area a{
    display:block;
    color:white;
    text-decoration:none;
    padding:14px 20px;
    font-size:15px;
    font-weight:500;
    line-height:1.3;
    white-space:nowrap;
}

.menu-list li a:hover,
.logout-area a:hover{
    background:#334155;
}

.logout-area{
    border-top:1px solid rgba(255,255,255,.15);
}

.badge-sidebar{
    float:right;
    background:#dc2626;
    color:white;
    font-size:12px;
    padding:3px 8px;
    border-radius:20px;
    font-weight:bold;
}

.sidebar::-webkit-scrollbar{
    width:6px;
}

.sidebar::-webkit-scrollbar-track{
    background:#1e293b;
}

.sidebar::-webkit-scrollbar-thumb{
    background:#64748b;
    border-radius:20px;
}

.main-content{
    margin-left:250px;
    padding:25px;
}

.menu-btn{
    display:none;
}

.cards{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:20px;
    margin-top:20px;
}

.card{
    background:white;
    padding:20px;
    border-radius:12px;
    box-shadow:0 2px 10px rgba(0,0,0,.1);
}

.card h2{
    margin-top:10px;
}

@media(max-width:768px){

    .sidebar{
        left:-250px;
        transition:.3s;
    }

    .sidebar.active{
        left:0;
    }

    .main-content{
        margin-left:0;
        padding:75px 12px 20px;
    }

    .menu-btn{
        display:block;
        position:fixed;
        top:15px;
        left:15px;
        z-index:1000;
        border:none;
        background:#2563eb;
        color:white;
        padding:10px 15px;
        border-radius:8px;
        cursor:pointer;
    }

    @media(max-width: 900px){

    .sidebar{
        width: 70px;
        overflow-x: hidden;
    }

    .sidebar .logo,
    .sidebar h2,
    .sidebar .menu-text,
    .sidebar span{
        display: none;
    }

    .sidebar ul li a{
        justify-content: center;
        padding: 15px 0;
        font-size: 20px;
    }

    .main-content{
        margin-left: 70px;
        padding: 20px;
    }
}

    @media(max-width: 600px){

    .sidebar{
        width: 0;
        overflow: hidden;
    }

    .main-content{
        margin-left: 0;
        padding: 15px;
    }
}

    
}