:root {
  --bg: #0f1520;
  --surface: #172131;
  --surface-2: #1e2a3e;
  --text: #eef3fb;
  --muted: #9cb0cc;
  --accent: #26b3ff;
  --good: #42c58a;
  --warn: #ffbf47;
  --bad: #ff6d6d;
  --border: #2f3f59;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 18px;
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 12px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
}

.nav a.active,
.nav a:hover {
  color: var(--text);
  border-color: var(--border);
  background: var(--surface);
}

.banner {
  margin: 20px 0;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #12273a;
  color: #b6dcff;
  font-size: 14px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.card h2,
.card h3 {
  margin: 0 0 10px;
  font-size: 15px;
}

.label {
  color: var(--muted);
  font-size: 12px;
}

.value {
  font-size: 26px;
  font-weight: 700;
  margin: 6px 0;
}

.good {
  color: var(--good);
}

.warn {
  color: var(--warn);
}

.bad {
  color: var(--bad);
}

.muted {
  color: var(--muted);
}

.section {
  margin-top: 14px;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

th,
td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

th {
  color: var(--muted);
  font-weight: 600;
}

tr:last-child td {
  border-bottom: 0;
}

.row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 12px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 6px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.list li {
  margin-bottom: 8px;
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 12px;
  color: var(--muted);
}

input,
select,
button,
textarea {
  font: inherit;
}

input,
select,
textarea {
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
}

button {
  border: 1px solid #1f7fb6;
  background: #1d8ecb;
  color: #fff;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--muted);
}

.stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-wrap: wrap;
  }
}