:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --surface-hover: #243044;
  --border: #2d3a4f;
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --accent: #3b82f6;
  --paid: #22c55e;
  --paid-soft: rgba(34, 197, 94, 0.15);
  --partial: #f59e0b;
  --partial-soft: rgba(245, 158, 11, 0.15);
  --overdue: #ef4444;
  --overdue-soft: rgba(239, 68, 68, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  margin-top: 0.35rem;
  max-width: 32rem;
}

.primary-btn {
  flex-shrink: 0;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.primary-btn:hover {
  opacity: 0.9;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.outstanding {
  color: var(--overdue);
}

.table-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

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

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

.table th {
  text-align: left;
  padding: 0.75rem 1.25rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.15);
}

.table td {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border);
}

.table tbody tr:hover {
  background: var(--surface-hover);
}

.name-cell {
  font-weight: 600;
}

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

.balance-due {
  color: var(--overdue);
  font-weight: 600;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.badge.paid {
  background: var(--paid-soft);
  color: var(--paid);
}

.badge.partial {
  background: var(--partial-soft);
  color: var(--partial);
}

.badge.overdue {
  background: var(--overdue-soft);
  color: var(--overdue);
}

@media (max-width: 640px) {
  .header {
    flex-direction: column;
  }

  .primary-btn {
    width: 100%;
  }
}