:root {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f1f1f;
  background: #f6f6f7;
}

.sb-page {
  padding: 28px;
  max-width: 1240px;
  margin: 0 auto;
}

.sb-grid {
  display: grid;
  gap: 16px;
}

.sb-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.sb-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.sb-card {
  background: #fff;
  border: 1px solid #e3e3e5;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}

.sb-card h2,
.sb-card h3,
.sb-card p { margin-top: 0; }

.sb-kpi {
  font-size: 28px;
  font-weight: 700;
  margin: 8px 0 0;
}

.sb-label {
  font-size: 13px;
  color: #616161;
  font-weight: 600;
}

.sb-muted { color: #6b6b6b; }
.sb-success { color: #137333; }
.sb-warning { color: #9a6700; }
.sb-danger { color: #b42318; }

.sb-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.sb-table th,
.sb-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #ececee;
  text-align: left;
  font-size: 14px;
}
.sb-table th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: #6b6b6b; }

.sb-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}
.sb-badge-pending { background: #fff4d6; color: #815500; }
.sb-badge-collected { background: #e7f6ec; color: #166534; }
.sb-badge-waived { background: #ececf0; color: #555; }

.sb-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.sb-form-grid {
  display: grid;
  gap: 14px;
  max-width: 760px;
}

.sb-input,
.sb-select,
.sb-textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #c8c8cc;
  border-radius: 9px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
}

.sb-textarea { min-height: 110px; resize: vertical; }

.sb-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sb-right { margin-left: auto; }

@media (max-width: 900px) {
  .sb-grid-4, .sb-grid-2 { grid-template-columns: 1fr; }
  .sb-page { padding: 18px; }
}
.sb-card-link { color: inherit; text-decoration: none; display: block; }
.sb-card-link:hover { box-shadow: 0 6px 24px rgba(0,0,0,.08); }
.sb-button { display: inline-flex; align-items: center; justify-content: center; padding: 8px 14px; border: 1px solid #d0d5dd; border-radius: 8px; color: #202223; text-decoration: none; background: #fff; font-weight: 600; }