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

body{
background:#f4f6f9;
color:#333;
}

/* Top Bar */

.topbar{
height:70px;
background:#003366;
color:#fff;
display:flex;
justify-content:space-between;
align-items:center;
padding:0 30px;
position:fixed;
top:0;
left:0;
right:0;
z-index:1000;
}

.logo{
font-size:24px;
font-weight:bold;
}

.right a{
color:#fff;
text-decoration:none;
font-weight:bold;
margin-left:15px;
}

/* Sidebar */

.sidebar{
position:fixed;
top:70px;
left:0;
width:240px;
height:100%;
background:#0b3d75;
padding-top:20px;
}

.sidebar h2{
color:#fff;
text-align:center;
margin-bottom:20px;
font-size:22px;
}

.sidebar ul{
list-style:none;
padding:0;
}

.sidebar ul li{
margin:5px 0;
}

.sidebar ul li a{
display:block;
padding:14px 20px;
color:#fff;
text-decoration:none;
transition:.3s;
}

.sidebar ul li a:hover{
background:#ff6600;
}

/* Main Content */

.main-content{
margin-left:240px;
margin-top:90px;
padding:25px;
}

/* Cards */

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

.card{
background:#fff;
padding:25px;
border-radius:10px;
box-shadow:0 5px 15px rgba(0,0,0,.08);
}

/* Buttons */

.btn{
display:inline-block;
padding:10px 18px;
background:#ff6600;
color:#fff;
text-decoration:none;
border-radius:5px;
font-weight:bold;
}

.btn:hover{
background:#003366;
}

/* Tables */

table{
width:100%;
border-collapse:collapse;
background:#fff;
margin-top:20px;
}

table th,
table td{
padding:12px;
border:1px solid #ddd;
text-align:center;
}

table th{
background:#003366;
color:#fff;
}

table img{
width:80px;
height:80px;
object-fit:contain;
}