:root {
  --bg: #0c0f14;
  --surface: #151b24;
  --elevated: #1c2430;
  --border: #2a3544;
  --text: #e8edf4;
  --muted: #8b99ad;
  --accent: #4d9fff;
  --accent-dim: #2d6cb3;
  --success: #3ecf8e;
  --danger: #f07178;
  --radius: 10px;
  --font: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2840 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
aside {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 1.25rem 1rem;
}
aside .brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  padding: 0 0.35rem;
}
nav a {
  display: block;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  color: var(--text);
  margin-bottom: 0.2rem;
  text-decoration: none;
  font-size: 0.95rem;
}
nav a:hover { background: var(--elevated); text-decoration: none; }
nav a.active { background: var(--elevated); border: 1px solid var(--border); }
main {
  padding: 1.75rem 2rem 3rem;
  max-width: 1100px;
}
h1 { font-size: 1.45rem; font-weight: 650; margin: 0 0 1rem; letter-spacing: -0.02em; }
h2 { font-size: 1.1rem; font-weight: 600; margin: 1.75rem 0 0.75rem; color: var(--muted); }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin-bottom: 1rem;
}
label { display: block; font-size: 0.8rem; color: var(--muted); margin: 0.65rem 0 0.25rem; }
input[type="text"], input[type="password"], input[type="number"], input[type="url"], select, textarea {
  width: 100%;
  max-width: 520px;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
textarea { min-height: 90px; max-width: 100%; }
.btn {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 0;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  font: inherit;
}
.btn:hover { background: var(--accent-dim); }
.btn-secondary { background: var(--elevated); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: #a33b42; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.55rem 0.65rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
.muted { color: var(--muted); font-size: 0.9rem; }
.flash { padding: 0.75rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.flash.ok { background: #143d2d; border: 1px solid #2a6b4d; }
.flash.err { background: #3d1418; border: 1px solid #6b2a32; }
.login-wrap { max-width: 400px; margin: 4rem auto; padding: 1rem; }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.75rem; }
.pill { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.75rem; background: var(--elevated); border: 1px solid var(--border); }
code { font-size: 0.85em; background: var(--bg); padding: 0.15rem 0.4rem; border-radius: 4px; }