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

body{
    font-family:Arial, Helvetica, sans-serif;
    background:linear-gradient(135deg,#2563eb,#0f172a);
    min-height:100vh;
}

.container{
    width:95%;
    max-width:1100px;
    margin:40px auto;
}

.card{
    background:#ffffff;
    border-radius:15px;
    padding:30px;
    box-shadow:0 10px 30px rgba(0,0,0,.2);
}

h1,h2,h3{
    color:#1e3a8a;
    text-align:center;
    margin-bottom:20px;
}

p{
    color:#555;
    margin-bottom:20px;
}

input,
select,
button{
    width:100%;
    padding:12px 15px;
    margin:8px 0;
    border:1px solid #d1d5db;
    border-radius:8px;
    font-size:16px;
    transition:.3s;
}

input:focus,
select:focus{
    outline:none;
    border-color:#2563eb;
    box-shadow:0 0 8px rgba(37,99,235,.3);
}

button,
.btn{
    display:block;
    width:100%;
    padding:15px;
    margin-top:10px;
    text-decoration:none;
    text-align:center;
    color:white;
    background:#2563eb;
    border:none;
    border-radius:10px;
    font-size:18px;
    font-weight:bold;
    transition:.3s;
}

button:hover,
.btn:hover{
    background:#1d4ed8;
    transform:translateY(-3px);
}

.menu{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
    margin-top:25px;
}

table{
    width:100%;
    border-collapse:collapse;
    margin-top:20px;
    background:white;
    overflow:hidden;
    border-radius:10px;
}

table tr:nth-child(even){
    background:#f8fafc;
}

table tr:hover{
    background:#e0ecff;
}

th{
    background:#2563eb;
    color:white;
    padding:14px;
    font-size:16px;
}

td{
    padding:12px;
    border-bottom:1px solid #ddd;
}

.search{
    margin:20px 0;
}

.logout{
    background:#dc3545;
}

.logout:hover{
    background:#b91c1c;
}

.success{
    background:#16a34a;
    color:white;
    padding:12px;
    border-radius:8px;
    margin-bottom:15px;
}

.error{
    background:#dc2626;
    color:white;
    padding:12px;
    border-radius:8px;
    margin-bottom:15px;
}

.footer{
    text-align:center;
    color:white;
    margin-top:20px;
    font-size:14px;
}

@media(max-width:768px){

    .container{
        width:98%;
    }

    .card{
        padding:20px;
    }

    table{
        display:block;
        overflow-x:auto;
    }

}