:root {
  --bg: #f4f6f8;
  --card: #fff;
  --text: #1a1f36;
  --muted: #6b7280;
  --accent: #22c55e;
  --sidebar: #ffffff;
}

* {
  box-sizing: border-box;
}

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

.shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--sidebar);
  border-right: 1px solid #e5e7eb;
  padding: 1.25rem;
}

.logo {
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sidebar a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
}

.sidebar a.active,
.sidebar a:hover {
  background: #ecfdf3;
  color: #15803d;
}

main {
  padding: 1.5rem 2rem;
}

.top h1 {
  margin: 0 0 0.25rem;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.card.wide {
  grid-column: span 3;
}

.big {
  font-size: 2rem;
  font-weight: 700;
  margin: 0.5rem 0;
}

pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: 12px;
  overflow: auto;
}

.page-root {
  min-height: 320px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.toolbar input[type="search"] {
  flex: 1;
  min-width: 200px;
  padding: 0.55rem 0.75rem;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  font-size: 0.95rem;
}

.table-wrap {
  overflow: auto;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid #f1f5f9;
  text-align: left;
  white-space: nowrap;
}

th {
  background: #f8fafc;
  color: var(--muted);
  font-weight: 600;
}

tbody tr:hover {
  background: #f0fdf4;
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .card.wide {
    grid-column: span 1;
  }
}