:root{
  --bg:#071226;--card:#0b1220;--muted:#94a3b8;--accent:#0ea5a4;--danger:#ef4444;
  --glass:rgba(255,255,255,0.03);--radius:10px;--pad:12px;color-scheme:dark
}
*{box-sizing:border-box}
body{
  margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial;
  background:linear-gradient(180deg,#061221 0%, #071425 100%);
  color:#e6eef6;min-height:100vh;padding:20px
}
.container{max-width:1200px;margin:0 auto}
header.appbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:48px;height:48px;border-radius:100px;background:none;display:flex;align-items:center;justify-content:center;font-weight:700;color:#022}
h1{margin:0;font-size:18px}
.muted{color:var(--muted);font-size:13px}
main.grid{display:grid;grid-template-columns:280px 1fr;gap:18px}
aside.panel{background:var(--card);padding:var(--pad);border-radius:var(--radius)}
.nav-button{display:block;padding:10px;border-radius:8px;margin-bottom:8px;background:var(--glass);border:1px solid rgba(255,255,255,0.02);color:var(--muted);text-decoration:none;font-weight:600;cursor:pointer}
.nav-button.active{background:linear-gradient(90deg, rgba(14,165,164,0.12), rgba(14,165,164,0.06));color:#e6fffefe}
section.card{background:var(--card);padding:var(--pad);border-radius:var(--radius)}
.flex{display:flex;gap:12px;align-items:center}
.space{flex:1}
input,select,textarea{width:100%;padding:10px;border-radius:8px;border:1px solid rgba(255,255,255,0.04);background:transparent;color:inherit}
textarea{min-height:80px;resize:vertical}
.btn{display:inline-block;padding:10px 14px;border-radius:10px;background:linear-gradient(90deg,var(--accent),#22c1c3);color:#022;font-weight:700;border:none;cursor:pointer}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--muted)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px;text-align:left;border-bottom:1px dashed rgba(255,255,255,0.03)}
th{color:var(--muted);font-size:13px}
.img-preview{width:72px;height:48px;object-fit:cover;border-radius:6px;border:1px solid rgba(255,255,255,0.03)}
.small-note{font-size:12px;color:var(--muted)}
.editor-box{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01)); padding:12px; border-radius:8px; border:1px solid rgba(255,255,255,0.03)}
.editor-box h2{margin:0 0 8px 0}

/* Tabs */
.tabs { display:flex; gap:8px; margin-bottom:12px; flex-wrap:wrap; }
.tab-btn { padding:8px 12px; border-radius:8px; background:var(--glass); border:1px solid rgba(255,255,255,0.03); cursor:pointer; color:var(--muted); }
.tab-btn.active { background:linear-gradient(90deg, rgba(14,165,164,0.18), rgba(14,165,164,0.06)); color:#fff; border-color:rgba(255,255,255,0.08); }

/* Tab content: list */
.tab-contents { background:var(--card); border-radius:8px; padding:12px; border:1px solid rgba(255,255,255,0.03); }
.cat-section { display:none; }
.cat-section.active { display:block; }

.prod-list { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; }
.prod-item { display:flex; align-items:center; gap:12px; padding:8px; border-radius:8px; background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.02)); border:1px solid rgba(255,255,255,0.03); }
.prod-item.dragging { opacity:0.6; transform:scale(0.995); box-shadow:0 6px 18px rgba(0,0,0,0.4); }
.drag-handle { cursor:grab; padding:6px 8px; border-radius:6px; background:rgba(255,255,255,0.02); border:1px solid rgba(255,255,255,0.03); }
.prod-meta { flex:1; min-width:0; }
.prod-meta h4 { margin:0 0 4px 0; font-size:14px; }
.prod-meta .small { font-size:12px; color:var(--muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

/* buttons area */
.prod-actions { display:flex; gap:8px; align-items:center; }

/* placeholder drop line */
.drop-placeholder { height:8px; border-radius:6px; background:linear-gradient(90deg, rgba(14,165,164,0.12), rgba(14,165,164,0.06)); margin:4px 0; }

/* responsive */
@media(max-width:900px){
  main.grid{grid-template-columns:1fr}
  .prod-item { flex-direction:row; }
}