:root {
  --bg: #0e1116;
  --panel: #171b22;
  --line: #2a3140;
  --text: #e8ecf2;
  --muted: #8b95a8;
  --accent: #3d8bfd;
  --danger: #e35d6a;
  --ok: #3ecf8e;
  --radius: 12px;
  --font: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
.err { display: none; color: var(--danger); min-height: 1.2em; }
.err:not([hidden]) { display: block !important; }
.toast {
  position: fixed; z-index: 9999; left: 50%; top: 16px; transform: translateX(-50%);
  padding: 12px 18px; border-radius: 10px; font-weight: 600; max-width: 90vw;
  box-shadow: 0 8px 30px rgba(0,0,0,.35);
}
.toast.ok { background: #1b3d2f; color: #8dffc1; border: 1px solid #2f6b4e; }
.toast.bad { background: #3d1b22; color: #ffb0b8; border: 1px solid #6b2f3a; }
button.primary { background: var(--ok); color: #04140c; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2740, var(--bg));
  color: var(--text);
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(380px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  gap: 12px;
}
.login-card h1 { margin: 0; font-size: 1.4rem; }
.login-card p { margin: 0; color: var(--muted); }
.login-card .hint code { color: #9ecbff; }

.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}
.nav {
  background: rgba(23, 27, 34, 0.92);
  border-right: 1px solid var(--line);
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 8px 12px 18px;
}
.nav button {
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.nav button.active, .nav button:hover { background: #222833; color: var(--text); }
.nav .logout { margin-top: auto; color: var(--danger); }

main { padding: 28px; max-width: 960px; }
.tab { display: none; }
.tab.active { display: block; }
h2 { margin: 0 0 18px; font-size: 1.5rem; }
h3 { margin: 22px 0 10px; font-size: 1.05rem; color: var(--muted); }

.grid.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat.wide { grid-column: span 3; }
.stat span { display: block; color: var(--muted); font-size: 0.85rem; }
.stat strong { font-size: 1.25rem; }

.form, .row { display: grid; gap: 12px; max-width: 420px; }
.row.actions { grid-template-columns: repeat(4, auto); max-width: none; }
label { display: grid; gap: 6px; font-size: 0.9rem; color: var(--muted); }
label.check { grid-template-columns: auto 1fr; align-items: center; color: var(--text); }
input, select, button {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #10141b;
  color: var(--text);
  padding: 10px 12px;
}
button {
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  cursor: pointer;
  font-weight: 600;
}
button.danger { background: var(--danger); }
button:hover { filter: brightness(1.08); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 600; }

.logs {
  background: #0a0d12;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  max-height: 320px;
  overflow: auto;
  font-size: 0.8rem;
  line-height: 1.45;
}
.err { color: var(--danger); }
code { color: #9ecbff; }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .nav { flex-direction: row; flex-wrap: wrap; border-right: 0; border-bottom: 1px solid var(--line); }
  .nav .logout { margin-top: 0; }
  .grid.stats { grid-template-columns: 1fr 1fr; }
  .stat.wide { grid-column: span 2; }
  .row.actions { grid-template-columns: 1fr 1fr; }
}