/*Vista general*/
body{
margin:0;
background:#e5e7eb;
font-family:system-ui;
}

#toolbar{
position:fixed;
top:0;
left:0;
right:0;
height:60px;
background:white;
border-bottom:1px solid #ddd;
display:flex;
align-items:center;
gap:10px;
padding:0 20px;
z-index:10;
}

#viewer{
margin-top:80px;
max-width:900px;
margin-left:auto;
margin-right:auto;
}

.page{
margin-bottom:40px;
display:flex;
justify-content:center;
}

canvas{
box-shadow:0 6px 20px rgba(0,0,0,.15);
background:white;
}

button{
padding:6px 12px;
cursor:pointer;
}

#toolbar{
position:fixed;
top:0;
left:0;
right:0;
height:60px;
background:white;
border-bottom:1px solid #ddd;
display:flex;
align-items:center;
gap:10px;
padding:0 20px;
z-index:10;
}

.btn{
border:1px solid #ddd;
background:white;
padding:6px 10px;
border-radius:6px;
cursor:pointer;
font-size:18px;
}

.btn:hover{
background:#f1f3f5;
}

#pageCounter{
margin-left:10px;
font-weight:600;
color:#444;
}