:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #2563eb;
  --danger: #dc2626;
  --border: #e2e8f0;
  --sidebar: #0f172a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--sidebar);
  color: #fff;
  padding: 16px 0;
  flex-shrink: 0;
}

.sidebar .brand { padding: 0 20px 20px; font-weight: 700; font-size: 17px; }

.sidebar nav a {
  display: block;
  padding: 12px 20px;
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 600;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.sidebar nav a.muted { color: #94a3b8; }

.content { flex: 1; padding: 24px; max-width: 1100px; }
.content.centered { display: flex; align-items: center; justify-content: center; max-width: none; }

h1 { margin-top: 0; font-size: 24px; }
h2 { font-size: 17px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
}

.cards { display: flex; gap: 16px; flex-wrap: wrap; }
.stat { min-width: 180px; }
.stat .value { font-size: 30px; font-weight: 700; color: var(--primary); }
.stat .label { color: var(--muted); }

.login-card { width: 360px; }

form label { display: block; margin: 10px 0 4px; font-weight: 600; }
input {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; }
.inline-form input { flex: 1; min-width: 140px; }

button.primary {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 9px 18px;
  font-weight: 600;
  cursor: pointer;
}
button.primary:hover { background: #1d4ed8; }

table { width: 100%; border-collapse: collapse; }
table th, table td { text-align: start; padding: 9px 10px; border-bottom: 1px solid var(--border); }
table th { background: #f1f5f9; }

.error { color: var(--danger); font-weight: 600; }
.ok { color: #16a34a; font-weight: 600; }

.chip {
  display: inline-block;
  padding: 6px 12px;
  background: #eef2ff;
  color: #4338ca;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}
.chip:hover { background: #e0e7ff; }

.btn { display: inline-block; text-decoration: none; padding: 9px 18px; border-radius: 8px; }
a.primary { color: #fff; }

select {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
}
button { border: 1px solid var(--border); background: #fff; border-radius: 8px; padding: 7px 14px; cursor: pointer; font-weight: 600; }