:root {
  --bg: #f3f4f6;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --nav: #0b1533;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --border: #e2e8f0;
  --danger: #dc2626;
  --warn: #d97706;
  --ok: #059669;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
nav {
  background: var(--nav);
  padding: 16px 24px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: 700;
}
nav a:hover { text-decoration: underline; }
main {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 20px 40px;
}
h1 {
  font-size: 48px;
  margin: 0 0 16px;
}
h2 {
  font-size: 28px;
  margin: 0 0 16px;
}
h3 {
  font-size: 20px;
  margin: 0 0 12px;
}
p, li, label, input, select, textarea, button {
  font-size: 18px;
  line-height: 1.5;
}
.small { font-size: 14px; color: var(--muted); }
.grid {
  display: grid;
  gap: 20px;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.button-link,
button {
  display: inline-block;
  border: 0;
  cursor: pointer;
  padding: 12px 18px;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  text-decoration: none;
  font-weight: 700;
}
.button-link:hover,
button:hover { background: var(--primary-dark); }
.button-secondary {
  background: #334155;
}
.button-secondary:hover {
  background: #1e293b;
}
form {
  display: grid;
  gap: 16px;
}
input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #cbd5e1;
  background: white;
}
textarea { min-height: 110px; resize: vertical; }
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}
th, td {
  border-bottom: 1px solid var(--border);
  text-align: left;
  padding: 14px 12px;
  vertical-align: top;
}
th { background: #eff6ff; }
.status {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}
.status-danger { background: #fee2e2; color: var(--danger); }
.status-warn { background: #fef3c7; color: var(--warn); }
.status-ok { background: #dcfce7; color: var(--ok); }
.kpi {
  font-size: 34px;
  font-weight: 800;
  margin: 8px 0;
}
ul { padding-left: 20px; }
.code-box {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px;
  border-radius: 12px;
  overflow-x: auto;
}
footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}
@media (max-width: 600px) {
  h1 { font-size: 34px; }
  h2 { font-size: 24px; }
}