@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&display=swap");

:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --good: #34d399;
  --bad: #f87171;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", system-ui, sans-serif;
}

nav {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 12px 24px;
  background: var(--panel);
  border-bottom: 1px solid #334155;
  position: sticky;
  top: 0;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

nav a:hover,
nav a.active {
  color: var(--accent);
}

nav .brand {
  color: var(--text);
  font-weight: 700;
  margin-right: 8px;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 16px;
}

h1 {
  font-size: 22px;
  margin: 0 0 16px;
}

h2 {
  font-size: 16px;
  margin: 0 0 12px;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat {
  background: var(--panel-2);
  border-radius: 8px;
  padding: 14px;
}

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

.stat .value {
  font-size: 20px;
  font-weight: 700;
  margin-top: 4px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid #334155;
}

th {
  color: var(--muted);
  font-weight: 500;
}

input,
select,
button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
  margin: 2px 6px 2px 0;
}

button.primary {
  background: var(--accent);
  color: #0f172a;
  font-weight: 700;
  border: none;
  cursor: pointer;
}

button.primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error {
  color: var(--bad);
  font-size: 13px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  align-items: end;
}