:root{
  --bg:#0b1220; --panel:#111a2b; --accent:#3ca5ff; --muted:#7aa7c7; --ok:#33cc7a; --warn:#ffb020; --err:#ff5c77;
  --card:#0e1626; --border:rgba(255,255,255,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:#e6f0ff;font:16px/1.5 Inter,ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial}
.container{max-width:1050px;margin:0 auto;padding:24px}
.header{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.logo{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#9ef9ff)}
h1{font-size:1.4rem;margin:0}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;margin:14px 0;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.tabs{display:flex;gap:8px;margin:12px 0 4px}
.tab{padding:10px 14px;border:1px solid var(--border);border-radius:999px;background:#0c1526;cursor:pointer;user-select:none}
.tab.active{background:var(--accent);color:#001524;border-color:transparent}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:900px){.row{grid-template-columns:1fr}}
label{display:block;font-weight:600;margin:10px 0 6px;color:#d8eaff}
input[type="file"]{display:block;padding:10px;border:1px dashed var(--border);border-radius:10px;background:#0a1323;width:100%}
.range{display:flex;align-items:center;gap:10px}
.range input[type="range"]{width:100%}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:12px;border:1px solid var(--border);background:#0f1a2d;color:#e6f0ff;cursor:pointer}
.btn.primary{background:var(--accent);color:#051221;border:none}
.btn:disabled{opacity:.6;cursor:not-allowed}
small.muted{color:var(--muted)}
.progress{height:10px;background:#0a1220;border-radius:999px;overflow:hidden;border:1px solid var(--border);}
.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),#9ef9ff);width:0%}
.kv{display:grid;grid-template-columns:180px 1fr;gap:10px;margin:8px 0}
footer{margin-top:24px;color:#91a6c6}
.badge{padding:3px 8px;border-radius:999px;background:#0e2744;border:1px solid var(--border);font-size:.8rem}