:root{
  --bg:#0b0b0c;
  --panel:#151518;
  --text:#f6f6f7;
  --muted:#b8b8c0;
  --border:#2a2a33;
  --radius:16px;

  /* Dimensioni immagini */
  --thumb-size:135px;
  --queue-thumb-size:115px;
}

*{
  box-sizing:border-box;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,"Helvetica Neue",Arial;
  background:var(--bg);
  color:var(--text);
}

.wrap{
  width:min(98vw, 1500px);
  margin:0 auto;
  padding:20px;
  display:grid;
  gap:16px;
}

.header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:260px;
}

.brand__logo{
  width:48px;
  height:48px;
  border-radius:12px;
  object-fit:cover;
  border:1px solid var(--border);
  background:#111;
}

.brand__powered{
  font-size:12px;
  color:var(--muted);
  line-height:1.1;
}

.brand__link{
  display:inline-block;
  margin-top:2px;
  color:var(--text);
  text-decoration:none;
  font-size:16px;
  font-weight:750;
}

.brand__link:hover{
  text-decoration:underline;
}

.controls{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}

.btn{
  background:#2a2a33;
  border:1px solid var(--border);
  color:var(--text);
  padding:10px 12px;
  border-radius:12px;
  cursor:pointer;
}

.btn:hover{
  filter:brightness(1.05);
}

.file{
  display:flex;
  gap:10px;
  align-items:center;
  background:#141418;
  border:1px solid var(--border);
  padding:8px 10px;
  border-radius:12px;
  color:var(--muted);
  font-size:13px;
}

.file input{
  color:var(--muted);
}

/* Desktop/live layout: tier list a sinistra, coda a destra */
.layout{
  display:grid;
  grid-template-columns:minmax(0, 1fr) 280px;
  gap:18px;
  align-items:start;
}

.tiers{
  display:grid;
  gap:14px;
  min-width:0;
}

.tier{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:15px;
  display:grid;
  grid-template-columns:260px 1fr;
  gap:15px;
  align-items:start;

  /* Altezza intermedia per live */
  min-height:180px;
}

.tier.drop-hover{
  outline:2px dashed #5b5bf0;
  outline-offset:2px;
}

.labelbox{
  display:flex;
  gap:10px;
  align-items:stretch;
}

.tier-label{
  width:100%;
  min-height:50px;
  border:1px solid rgba(0,0,0,.15);
  padding:12px 14px;
  border-radius:12px;
  font-size:15px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.4px;
  outline:none;
}

.tier-color{
  width:46px;
  height:50px;
  padding:0;
  margin:0;
  border-radius:12px;
  border:1px solid var(--border);
  background:transparent;
  cursor:pointer;
}

.tier-items{
  display:flex;
  flex-wrap:wrap;
  gap:13px;
  align-items:flex-start;
}

.thumb{
  width:var(--thumb-size);
  height:var(--thumb-size);
  border-radius:16px;
  object-fit:cover;
  border:1px solid var(--border);
  background:#111;
}

/* Coda laterale */
.queue-panel{
  position:sticky;
  top:18px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:14px;
  display:grid;
  gap:12px;
  max-height:calc(100vh - 110px);
  overflow:hidden;
}

.queue-title{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.hint{
  color:var(--muted);
  font-size:13px;
}

.queue{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  overflow-y:auto;
  overflow-x:hidden;
  padding-right:4px;
  align-content:start;
}

.queue .thumb{
  width:100%;
  height:var(--queue-thumb-size);
  cursor:grab;
  user-select:none;
  -webkit-user-drag:element;
  transition:filter 160ms ease, opacity 160ms ease, transform 160ms ease;
}

.queue .thumb.locked{
  filter:blur(10px);
  opacity:.55;
  cursor:not-allowed;
}

.queue .thumb.draggable{
  grid-column:1 / -1;
  height:145px;
}

.queue .thumb.draggable:hover{
  transform:translateY(-1px);
}

.empty{
  color:var(--muted);
  font-size:14px;
  padding:10px 0;
}

.toast{
  position:fixed;
  left:50%;
  bottom:18px;
  transform:translateX(-50%);
  background:rgba(25,25,32,.95);
  border:1px solid var(--border);
  padding:10px 12px;
  border-radius:12px;
  font-size:13px;
  color:var(--text);
  opacity:0;
  pointer-events:none;
  transition:opacity 200ms ease;
}

.toast.show{
  opacity:1;
}

/* Tablet/mobile: la coda torna sotto */
@media (max-width: 980px){
  .layout{
    grid-template-columns:1fr;
  }

  .queue-panel{
    position:static;
    max-height:none;
  }

  .queue{
    display:flex;
    overflow-x:auto;
    overflow-y:hidden;
  }

  .queue .thumb,
  .queue .thumb.draggable{
    width:112px;
    height:112px;
    flex:0 0 auto;
  }
}

@media (max-width: 760px){
  .wrap{
    padding:16px;
  }

  .tier{
    grid-template-columns:1fr;
    min-height:180px;
  }

  :root{
    --thumb-size:112px;
    --queue-thumb-size:108px;
  }
}