:root{
  --bg:#0a0e14; --panel:#121826; --panel2:#1a2233; --border:rgba(255,255,255,.08);
  --text:#e6e9f0; --muted:#7c8595; --brand:#4f8cff; --green:#22c55e; --red:#ef4444;
  --amber:#f59e0b; --purple:#a78bfa;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:inherit;text-decoration:none}
.layout{display:flex;min-height:100vh}
.sidebar{width:220px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);padding:18px 0;position:sticky;top:0;height:100vh}
.brand{font-weight:700;font-size:16px;padding:0 18px 18px;color:var(--brand);letter-spacing:.02em}
.nav a{display:block;padding:10px 18px;color:var(--muted);font-size:12.5px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;border-left:3px solid transparent}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.03)}
.nav a.active{color:var(--brand);border-left-color:var(--brand);background:rgba(79,140,255,.08)}
.main{flex:1;padding:28px 32px;max-width:1400px}
.page-title{font-size:20px;font-weight:700;margin:0 0 4px}
.page-sub{color:var(--muted);font-size:12.5px;margin:0 0 24px}
.grid{display:grid;gap:14px}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px}
.stat-card .label{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}
.stat-card .value{font-size:26px;font-weight:700}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:var(--muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;padding:8px 10px;border-bottom:1px solid var(--border)}
td{padding:9px 10px;border-bottom:1px solid rgba(255,255,255,.04)}
tr:hover td{background:rgba(255,255,255,.02)}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;padding:9px 18px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer}
.btn:hover{opacity:.9}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:10.5px;font-weight:700}
.badge-green{background:rgba(34,197,94,.15);color:var(--green);border:1px solid rgba(34,197,94,.35)}
.badge-red{background:rgba(239,68,68,.15);color:var(--red);border:1px solid rgba(239,68,68,.35)}
.badge-amber{background:rgba(245,158,11,.15);color:var(--amber);border:1px solid rgba(245,158,11,.35)}
.badge-muted{background:rgba(124,133,149,.15);color:var(--muted);border:1px solid var(--border)}
.match-nav{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
input[type=text],input[type=password],input[type=date],input[type=file],input[type=number],select{
  width:100%;background:var(--panel2);border:1px solid var(--border);color:var(--text);padding:9px 11px;border-radius:8px;font-size:13px}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-box{width:340px;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:28px}
.memory-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:18px}
.memory-summary{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:14px 0}
.memory-summary .box{text-align:center;background:var(--panel2);border-radius:10px;padding:10px 4px}
.memory-summary .box .l{font-size:9.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.memory-summary .box .v{font-size:18px;font-weight:700;margin-top:4px}
.similar-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-top:1px solid rgba(255,255,255,.05)}
.sim-score{font-weight:700;font-size:12.5px;border-radius:8px;padding:3px 8px}
.lesson-box{margin-top:14px;background:rgba(79,140,255,.08);border:1px solid rgba(79,140,255,.25);border-radius:10px;padding:10px 14px;font-size:12.5px}
.prob-bar{display:flex;height:8px;border-radius:4px;overflow:hidden;margin:6px 0}
.log-line{font-family:ui-monospace,Menlo,monospace;font-size:12px;padding:3px 0;border-bottom:1px solid rgba(255,255,255,.03)}
.log-INFO{color:#8fb3ff}.log-WARNING{color:var(--amber)}.log-ERROR{color:var(--red)}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}