/* estilos básicos */
:root{
  --bg:#0f1720;
  --card:#0b1220;
  --accent:#06b6d4;
  --muted:#94a3b8;
  --text:#e6eef6;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:linear-gradient(180deg,#071023 0%, #081427 100%);
  color:var(--text);
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.app{
  width:100%;
  max-width:920px;
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:12px;
  padding:18px;
  box-shadow:0 6px 24px rgba(2,6,23,0.6);
}
header h1{margin:0 0 4px 0}
header p{margin:0 0 12px 0;color:var(--muted)}

.uploader{
  border:2px dashed rgba(255,255,255,0.06);
  padding:18px;
  border-radius:8px;
  text-align:center;
  margin-bottom:14px;
  position:relative;
}
.uploader.dragover{background:rgba(255,255,255,0.01); border-color:var(--accent)}
.uploader input[type=file]{display:none}
.btn{
  display:inline-block;
  background:var(--accent);
  color:#041122;
  padding:8px 12px;
  border-radius:6px;
  cursor:pointer;
  margin-bottom:8px;
  font-weight:600;
}

.controls{
  display:flex;
  gap:12px;
  align-items:center;
  margin:12px 0;
}
.controls .left button{
  margin-right:6px;
  padding:8px 10px;
  background:transparent;
  color:var(--text);
  border:1px solid rgba(255,255,255,0.05);
  border-radius:6px;
  cursor:pointer;
}
.controls .center{flex:1; text-align:center}
#track-info{font-weight:600; margin-bottom:6px}
#progress{width:100%}
.controls .right{display:flex;gap:8px;align-items:center}

.playlist{
  margin-top:12px;
}
.playlist h2{margin:0 0 8px 0}
#playlist{list-style:none;padding:0;margin:0;max-height:320px;overflow:auto}
#playlist li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px;
  border-radius:6px;
  background:rgba(255,255,255,0.01);
  margin-bottom:6px;
}
.track-meta{display:flex;gap:12px;align-items:center}
.track-title{font-size:14px}
.track-duration{color:var(--muted);font-size:12px}
.track-actions button{margin-left:6px;padding:6px;border-radius:6px;border:0;background:rgba(255,255,255,0.02);color:var(--text);cursor:pointer}

.playlist-actions{margin-top:8px;text-align:right}
.playlist-actions button{background:transparent;border:1px solid rgba(255,255,255,0.05);padding:6px 8px;border-radius:6px;color:var(--text);cursor:pointer}

footer{margin-top:12px;color:var(--muted);font-size:13px}