body{
    font-family: Arial;
    background:#0f172a;
    color:white;
    margin:0;
}

.header{
    background:#020617;
    padding:15px;
    text-align:center;
}

.grid{
    display:grid;
    grid-template-columns: repeat(3,1fr);
    gap:10px;
    padding:10px;
}

.btn{
    padding:20px;
    background:#22c55e;
    text-align:center;
    border-radius:10px;
    color:white;
    border:none;
    display:block;
}

.btn-rojo{background:#ef4444;}
.btn-azul{background:#3b82f6;}

.card{
    background:#1e293b;
    padding:15px;
    margin:10px;
    border-radius:10px;
    
    .logout{
    display:block;
    width:95%;
    margin:20px auto;
    padding:15px;
    background:#ef4444;
    text-align:center;
    border-radius:10px;
    font-size:18px;
    color:white;
    text-decoration:none;
    font-weight:bold;
    transition:0.3s;
}

.logout:hover{
    background:#dc2626;
}
}

.btn-volver{
    display:inline-block;
    margin:20px;
    padding:12px 20px;
    background: linear-gradient(135deg,#6366f1,#3b82f6);
    color:white;
    border-radius:10px;
    text-decoration:none;
    font-weight:bold;
    font-size:16px;
    transition:0.3s;
    box-shadow:0 4px 10px rgba(0,0,0,0.3);
}

.btn-volver:hover{
    transform:scale(1.05);
    background: linear-gradient(135deg,#4f46e5,#2563eb);
}