:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #617085;
  --line: #dbe3ee;
  --blue: #486a8f;
  --green: #4f8a70;
  --red: #a85e5e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.brand {
  font-size: 20px;
  font-weight: 650;
}

.nav {
  display: flex;
  gap: 10px;
}

.nav a,
.button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 12px;
  text-decoration: none;
}

.button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

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

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

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

.metric-value {
  font-size: 24px;
  font-weight: 700;
  margin-top: 6px;
}

.positive {
  color: var(--red);
}

.negative,
.income {
  color: var(--green);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--line);
}

th,
td {
  padding: 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

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

.filters {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

select,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
}

@media (max-width: 800px) {
  .grid,
  .filters {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
}