:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --line: #2a3542;
  --text: #e7eef7;
  --muted: #8b9bb0;
  --accent: #3d8bfd;
  --ok: #3dd68c;
  --warn: #f0b429;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a3d, var(--bg));
  color: var(--text);
  display: flex;
  min-height: 100vh;
}
.nav {
  width: 220px;
  background: rgba(26, 34, 44, 0.95);
  border-right: 1px solid var(--line);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.nav h1 { font-size: 1.1rem; margin: 0 0 1rem; letter-spacing: 0.04em; }
.nav button {
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
}
.nav button.active, .nav button:hover {
  color: var(--text);
  background: #243041;
  border-color: var(--line);
}
main { flex: 1; padding: 1.25rem 1.5rem; overflow: auto; }
.tab { display: none; }
.tab.active { display: block; }
h2 { margin-top: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.75rem; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}
.card .n { font-size: 1.6rem; font-weight: 700; }
.card .l { color: var(--muted); font-size: 0.85rem; }
table { width: 100%; border-collapse: collapse; margin-top: 0.75rem; font-size: 0.92rem; }
th, td { border-bottom: 1px solid var(--line); padding: 0.55rem 0.4rem; text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
input, select, textarea, button.action {
  background: #121820;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
}
textarea { width: 100%; min-height: 70px; }
button.action {
  cursor: pointer;
  background: var(--accent);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}
button.action.secondary { background: #314257; }
button.action.danger { background: #c23b3b; }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; margin: 0.5rem 0; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin-top: 0.75rem;
}
.muted { color: var(--muted); }
.status-pending { color: var(--warn); }
.status-issued { color: var(--ok); }
@media (max-width: 800px) {
  body { flex-direction: column; }
  .nav { width: 100%; flex-direction: row; flex-wrap: wrap; }
}
body.login-wrap {
  display: block;
  min-height: 100vh;
}
.login-box {
  max-width: 380px;
  margin: 12vh auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
}
.login-box h1 { margin: 0.4rem 0 1rem; font-size: 1.4rem; }
.login-box label { display: block; color: var(--muted); font-size: 0.85rem; margin: 0.8rem 0 0.3rem; }
.login-box input { width: 100%; }
.login-box button.action { margin-top: 1rem; width: 100%; }