:root {
  --bg: #0f172a; --panel: #1e293b; --panel2: #162032; --border: #334155; --text: #e2e8f0; --muted: #94a3b8; --dim: #64748b;
  --blue: #2563eb; --blue2: #1d4ed8; --green: #059669; --red: #dc2626; --amber: #d97706;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, "Inter", "Segoe UI", sans-serif; }
a { color: #60a5fa; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, select, textarea { font: inherit; background: #0b1220; color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: 0; border-color: var(--blue); }
label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.field { margin-bottom: 12px; }
.btn { background: var(--blue); color: #fff; border: 0; border-radius: 8px; padding: 8px 14px; font-weight: 600; }
.btn:hover { background: var(--blue2); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.secondary { background: #334155; }
.btn.secondary:hover { background: #475569; }
.btn.danger { background: var(--red); }
.btn.success { background: var(--green); }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--panel); border-right: 1px solid var(--border); padding: 20px 12px; display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 10px; padding: 0 8px 20px; }
.brand .logo { width: 32px; height: 32px; border-radius: 8px; background: var(--blue); display: grid; place-items: center; font-weight: 700; color: #fff; }
.brand small { display: block; color: var(--dim); font-size: 11px; }
.nav a { display: block; padding: 9px 12px; border-radius: 8px; color: var(--muted); margin-bottom: 4px; }
.nav a.active, .nav a:hover { background: var(--blue); color: #fff; }
.sidebar .user { margin-top: auto; border-top: 1px solid var(--border); padding-top: 12px; font-size: 12px; color: var(--muted); }
.main { flex: 1; padding: 28px; overflow: auto; }
h1 { margin: 0 0 4px; font-size: 24px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; margin-bottom: 18px; }
.card h2 { margin: 0 0 12px; font-size: 16px; }
.grid { display: grid; gap: 14px; }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.grid.c5 { grid-template-columns: repeat(5, 1fr); }
.stat .v { font-size: 26px; font-weight: 700; }
.stat .l { color: var(--muted); font-size: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--dim); font-weight: 500; padding: 8px; border-bottom: 1px solid var(--border); }
td { padding: 8px; border-bottom: 1px solid #263248; vertical-align: top; }
tr.click { cursor: pointer; }
tr.click:hover td { background: #263248; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.green { background: #064e3b; color: #6ee7b7; }
.badge.red { background: #7f1d1d; color: #fca5a5; }
.badge.amber { background: #78350f; color: #fcd34d; }
.badge.gray { background: #334155; color: #cbd5e1; }
.badge.blue { background: #1e3a8a; color: #bfdbfe; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.login { min-height: 100vh; display: grid; place-items: center; }
.login .card { width: 380px; }
.error { background: #450a0a; border: 1px solid #7f1d1d; color: #fca5a5; padding: 8px 12px; border-radius: 8px; margin: 10px 0; font-size: 13px; }
.ok { background: #052e16; border: 1px solid #166534; color: #86efac; padding: 8px 12px; border-radius: 8px; margin: 10px 0; font-size: 13px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.codebox { background: #0b1220; border: 1px dashed var(--blue); padding: 14px; border-radius: 10px; font-size: 22px; letter-spacing: 2px; text-align: center; font-family: ui-monospace, monospace; }
.checks label { display: inline-flex; align-items: center; gap: 6px; margin-right: 12px; color: var(--text); font-size: 13px; }
.checks input { width: auto; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.toast { position: fixed; top: 16px; right: 16px; background: var(--green); color: #fff; padding: 10px 16px; border-radius: 10px; font-weight: 600; box-shadow: 0 10px 30px rgba(0,0,0,.4); }
.toast.err { background: var(--red); }
details summary { cursor: pointer; color: var(--muted); }
pre { background: #0b1220; padding: 8px; border-radius: 8px; overflow: auto; max-height: 200px; font-size: 11px; }