*{box-sizing:border-box}
:root{--bg:#0b1020;--card:#121a33;--muted:#aab4d4;--text:#e9efff;--accent:#4da3ff;--accent-2:#59d6b3}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;background:linear-gradient(180deg,#0b1020,#0d1430);color:var(--text)}
.topbar{padding:18px 24px;border-bottom:1px solid #1f2a4c;background:#0b1020;position:sticky;top:0;z-index:10}
.topbar h1{margin:0;font-size:20px;letter-spacing:.5px}
.topbar .sub{font-size:12px;color:var(--muted);margin-top:4px}
.container{max-width:1100px;margin:28px auto;padding:0 18px}
.card{background:var(--card);border:1px solid #1e2a50;border-radius:16px;padding:18px 18px 22px;margin-bottom:18px;box-shadow:0 10px 20px rgba(0,0,0,.25)}
.card h2{margin:0 0 10px 0;font-size:18px}
.card h3{margin:6px 0 10px 0;font-size:15px}
.muted{color:var(--muted)} 
.grid{display:grid;gap:12px}
.grid-2{grid-template-columns:1fr 1fr; margin-bottom: 5px}
.grid-3{grid-template-columns:1fr 1fr 1fr}
@media(max-width:980px){.grid-2,.grid-3{grid-template-columns:1fr}}
label{font-size:12px;color:var(--muted)}
input,select{width:100%;padding:10px;border-radius:10px;border:1px solid #24356b;background:#0d1430;color:var(--text)}
.btn{background:linear-gradient(135deg,var(--accent),#6aa8ff);border:none;border-radius:12px;padding:10px 14px;color:white;font-weight:600;cursor:pointer;box-shadow:0 8px 16px rgba(77,163,255,.3);}
.btn:disabled{opacity:.5;cursor:not-allowed}
.actions{margin-top:8px}
.mt{margin-top:12px}
.hints{font-size:12px;color:var(--muted)}
code{background:#0f1837;border:1px solid #20306c;padding:6px 8px;border-radius:10px;display:inline-block}
.table{width:100%;border-collapse:collapse;margin-top:8px}
.table th,.table td{border-bottom:1px solid #22305f;padding:8px 6px;font-size:13px;text-align:left}
.kv{display:grid;grid-template-columns:220px 1fr;gap:4px;font-size:14px}
.kv .k{color:var(--muted)}
.badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#10224a;border:1px solid #22408b;color:#cde1ff;font-size:12px}
.success{background:linear-gradient(135deg,#23b47e,#59d6b3);border-color:#2fd1a0;color:#041a14}
.error{background:linear-gradient(135deg,#cf4c4c,#ff6d6d);border-color:#ff7b7b;color:#200a0a}
.log{background:#0d1430;border:1px solid #1e2a50;border-radius:12px;padding:10px;max-height:180px;overflow:auto;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:#c4d2ff}
.plot-wrap{margin-top:10px;border:1px solid #1e2a50;border-radius:12px;padding:10px;background:#0d1430}
.hidden{display:none}
.footer{max-width:1100px;margin:0 auto;padding:18px;color:#99a7d5}
a.button{display:inline-block;text-decoration:none;color:white;padding:10px 14px;border-radius:12px;background:linear-gradient(135deg,var(--accent-2),#7cf8d9);font-weight:700}