:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --text: #e8eef4;
  --muted: #8b9aab;
  --accent: #3d9a7a;
  --border: #2a3542;
  --flash: #1e3a2f;
  --danger: #c45c5c;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  display: flex;
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 10% -10%, #1a2a33, var(--bg));
  color: var(--text);
}
.sidebar {
  width: 220px;
  padding: 1.5rem 1rem;
  background: rgba(0,0,0,.25);
  border-right: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .02em; margin-bottom: 1.5rem; }
.sidebar nav { display: flex; flex-direction: column; gap: .35rem; }
.sidebar a {
  color: var(--muted);
  text-decoration: none;
  padding: .45rem .6rem;
  border-radius: 6px;
}
.sidebar a:hover, .sidebar a.active { background: var(--panel); color: var(--text); }
.sidebar a.muted { margin-top: 1rem; opacity: .7; }
.main { flex: 1; padding: 1.5rem 2rem; overflow: auto; }
h1 { margin-top: 0; font-size: 1.6rem; }
h2 { font-size: 1.1rem; margin-top: 2rem; }
.flash {
  background: var(--flash);
  border: 1px solid var(--accent);
  padding: .75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  word-break: break-all;
}
.flash.error { border-color: var(--danger); background: #3a1e1e; }
.grid.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: .75rem; margin-bottom: 1.5rem; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.stat span { color: var(--muted); font-size: .85rem; }
.stat strong { font-size: 1.4rem; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .55rem .4rem; border-bottom: 1px solid var(--border); }
.badge {
  display: inline-block;
  padding: .15rem .45rem;
  border-radius: 4px;
  background: #243040;
  font-size: .8rem;
}
form.stack { display: flex; flex-direction: column; gap: .75rem; max-width: 640px; }
form.inline { display: inline; }
label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: .5rem; color: var(--text); }
input, select, textarea {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .5rem .65rem;
  border-radius: 6px;
  font: inherit;
}
button {
  align-self: flex-start;
  background: var(--accent);
  color: #04140f;
  border: 0;
  padding: .55rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
}
button.secondary { background: #2a4050; color: var(--text); }
button.linkish { background: transparent; color: var(--accent); padding: 0; font-weight: 500; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin: 0 0 1rem; }
legend { padding: 0 .4rem; color: var(--muted); }
.muted { color: var(--muted); }
.login-body {
  display: grid;
  place-items: center;
  background: radial-gradient(800px 400px at 50% 0%, #1a2a33, var(--bg));
}
.login-card {
  width: min(360px, 92vw);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.login-card h1 { margin: 0; font-size: 1.35rem; }
@media (max-width: 800px) {
  body { flex-direction: column; }
  .sidebar { width: 100%; border-right: 0; border-bottom: 1px solid var(--border); }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
}