body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: transparent;
  color: #172126;
}

.inventory-app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

.lookup-panel {
  background: #f7f7f5;
  padding: 22px;
  border: 1px solid #e5e5e0;
}

.lookup-intro {
  margin: 0 0 14px;
  color: #555;
  font-size: 16px;
}

.lookup-input {
  width: 100%;
  padding: 16px;
  font-size: 18px;
  border: 1px solid #cfcfcf;
  border-radius: 6px;
}

.lookup-meta {
  margin-top: 14px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #666;
  font-size: 14px;
}

.results {
  margin-top: 22px;
}

.inventory-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: 0 4px 14px rgba(0,0,0,.06);
}

.sku {
  font-size: 32px;
  margin: 0 0 10px;
  font-weight: 500;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 20px;
}

.field {
  border-top: 1px solid #eee;
  padding-top: 14px;
}

.label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #777;
  margin-bottom: 6px;
}

.value {
  font-size: 18px;
  font-weight: 600;
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.badge-green {
  color: #1f7a3f;
  background: #dff3e6;
}

.badge-orange {
  color: #a16207;
  background: #fef3c7;
}

.badge-red {
  color: #b42318;
  background: #fee4e2;
}

.badge-blue {
  color: #1d4e89;
  background: #e8f1fb;
}

.empty-state {
  padding: 28px;
  text-align: center;
  border: 1px dashed #ddd;
  background: #fff;
  color: #666;
}

@media (max-width: 800px) {
  .lookup-meta {
    flex-direction: column;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sku {
    font-size: 26px;
  }
}

@media (max-width: 520px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .inventory-card {
    padding: 18px;
  }
}