:root{
  --contained-max:1320px;
}

*{
  box-sizing:border-box;
}

html{
  scrollbar-gutter:stable;
  overflow-y:scroll;
}

body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background:
    radial-gradient(900px 500px at 20% -10%, rgba(96,165,250,.25), transparent 60%),
    radial-gradient(900px 500px at 110% 20%, rgba(34,197,94,.18), transparent 55%),
    var(--bg);
  min-height:100vh;
  padding:18px 14px;
}

body.layout-slide #viewerGrid{
  grid-template-columns:1fr !important;
}

body.layout-contained #viewerGrid{
  width:min(var(--contained-max), 100%);
  margin:0 auto;
}

body.layout-fullscreen{
  padding:10px 10px;
}

#viewerGrid{
  width:100%;
  margin:0 auto;
  display:grid;
  gap:14px;
  grid-template-columns:1fr;
}

.pagebar{
  width:100%;
  margin:0 auto 12px auto;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background: color-mix(in srgb, var(--card) 88%, transparent);
  box-shadow:var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}

.pagebar-left{display:flex; flex-direction:column; gap:4px; min-width:220px;}
.pagebar-title{font-weight:700; letter-spacing:.2px;}
.pagebar-sub{color:var(--muted); font-size:12.5px;}

.pagebar-right{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  margin-left:auto;
}

.pagebar-btn{
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--card) 90%, transparent);
  color:var(--text);
  padding:10px 12px;
  border-radius:999px;
  cursor:pointer;
  font-size:13px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition: transform .12s ease, background .12s ease;
  user-select:none;
}

.pagebar-btn:hover{transform:translateY(-1px);} 
.pagebar-btn:active{transform:translateY(0px);}
.pagebar-btn.active{
  background: color-mix(in srgb, var(--accent2) 16%, transparent);
  border-color: color-mix(in srgb, var(--accent2) 35%, var(--border));
}

.slideControls{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-left:auto;
}

.slideCounter{
  padding:8px 12px;
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--muted);
  font-size:12.8px;
  background: color-mix(in srgb, var(--card) 88%, transparent);
}

.columnControls{
  display:flex;
  gap:8px;
  align-items:center;
  position:relative;
}

.colLabel{color:var(--muted); font-size:12.5px;}

.colsSelect{
  appearance:none;
  -webkit-appearance:none;
  -moz-appearance:none;
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--card) 90%, transparent);
  color:var(--text);
  padding:10px 34px 10px 12px;
  border-radius:999px;
  font-size:13px;
  cursor:pointer;
  line-height:1;
}

.columnControls::after{
  content:"▾";
  position:absolute;
  right:12px;
  top:50%;
  transform:translateY(-50%);
  pointer-events:none;
  color:var(--muted);
  font-size:12px;
}