:root {
  color-scheme: dark;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  margin: 0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(96,165,250,0.14), transparent 30%),
              linear-gradient(180deg, #020617 0%, #0f172a 100%);
}

.app-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: grid;
  gap: 8px;
  padding: 24px 28px;
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 20px 90px rgba(15, 23, 42, 0.35);
}

.brand {
  font-size: clamp(1.75rem, 2.5vw, 2.5rem);
  font-weight: 700;
}

.subtitle {
  color: #94a3b8;
}

.layout-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  margin-top: 20px;
}

.card {
  grid-column: span 12;
  padding: 22px;
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.10);
}

.stats-card {
  grid-column: span 12;
}

.table-card {
  grid-column: span 12;
}

.stat-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.08);
}

.stat-item span {
  color: #94a3b8;
  font-size: 0.95rem;
}

.stat-item strong {
  font-size: 1.75rem;
  color: #ffffff;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

thead th {
  text-align: left;
  padding: 14px 16px;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: #e2e8f0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

tbody tr {
  transition: background-color 0.2s ease;
}

tbody tr:hover {
  background: rgba(148, 163, 184, 0.08);
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  color: #cbd5e1;
  font-size: 0.95rem;
}

footer.footer {
  margin-top: 18px;
  color: #94a3b8;
  text-align: center;
}

@media (min-width: 900px) {
  .stats-card { grid-column: span 12; }
  .table-card { grid-column: span 6; }
}