:root{--bg:#0b1220;--card:#111a2d;--muted:#a8b3cf;--text:#e8eeff;--accent:#4ea1ff;--line:#22304f;}
*{box-sizing:border-box;}
body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;background:#070d19;color:var(--text);}
a{color:var(--accent);text-decoration:none;}
.container{max-width:1100px;margin:0 auto;padding:18px;}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;background:linear-gradient(180deg,#0d1630,#0a1022);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5;}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;}
.badge{font-size:12px;color:var(--muted);padding:4px 10px;border:1px solid var(--line);border-radius:999px;}
.grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media(min-width:900px){.grid{grid-template-columns: 1.3fr .7fr;}}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;}
.card h2{margin:0 0 10px 0;font-size:16px;}
.muted{color:var(--muted);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#0f1a33;color:var(--text);cursor:pointer;font-weight:600;}
.btn.primary{background:linear-gradient(180deg,#2c7dff,#1d5fe0);border-color:#1c55c9;}
.btn.danger{background:linear-gradient(180deg,#ff4e4e,#e01d1d);border-color:#c91c1c;}
.btn:disabled{opacity:.55;cursor:not-allowed;}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.table{width:100%;border-collapse:collapse;border-radius:12px;overflow:hidden;}
.table th,.table td{border-bottom:1px solid var(--line);padding:10px;vertical-align:top;}
.table th{background:#0f1931;text-align:left;font-size:12px;color:#cfe0ff;letter-spacing:.02em;}
.input, textarea, select{width:100%;padding:10px 10px;border-radius:10px;border:1px solid var(--line);background:#0b1430;color:var(--text);outline:none;}
textarea{min-height:88px;resize:vertical;}
label{font-size:12px;color:#cfe0ff;font-weight:600;display:block;margin:10px 0 6px;}
.hr{height:1px;background:var(--line);margin:12px 0;}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0;}
.tab{padding:8px 10px;border:1px solid var(--line);border-radius:999px;background:#0b1430;color:var(--muted);font-weight:600;font-size:13px;}
.tab.active{background:#132149;color:var(--text);border-color:#2b3d6b;}
.kv{display:grid;grid-template-columns:1fr;gap:10px;}
@media(min-width:900px){.kv{grid-template-columns:1fr 1fr;}}
.small{font-size:12px;}
.sigwrap{display:grid;grid-template-columns:1fr;gap:12px;}
@media(min-width:900px){.sigwrap{grid-template-columns:1fr 1fr;}}
.canvas{width:100%;height:180px;border:1px dashed #3a4d7d;border-radius:12px;background:#081028;touch-action:none;}
.legend{
  padding:10px 12px;
  border:1px solid rgba(255,255,255,0.12);
  border-radius:12px;
  background: rgba(255,255,255,0.04);
  margin: 10px 0 14px 0;
}