body{font-family:Arial;margin:0;background:#f3f3f3;}
header{background:#4f67a3;color:white;padding:25px;}
.nav button{margin-right:10px;padding:10px 16px;border:none;border-radius:8px;background:#6d84c4;color:white;}
main{padding:20px;max-width:750px;margin:auto;}
.page{display:none;}
.card{background:white;padding:20px;border-radius:12px;margin-bottom:20px;box-shadow:0 2px 6px rgba(0,0,0,0.1);}
input,select{width:100%;padding:10px;border-radius:8px;border:1px solid #ccc;margin-top:10px;}
button{margin-top:10px;padding:10px 16px;border:none;border-radius:8px;background:#ddd;cursor:pointer;}
.buttons{display:flex;gap:10px;}
.menuBtn{background:none;font-size:20px;}
table{width:100%;margin-top:15px;border-collapse:collapse;}
th,td{border:1px solid #ccc;padding:10px;text-align:left;}