:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #475569;
  --primary: #2563eb;
  --border: #d1d5db;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.page-header {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 1.5rem 1rem;
  text-align: center;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
}

.subtitle {
  margin-top: 0.75rem;
  color: var(--muted);
}

.instructions,
.controls,
.page-footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.instructions h2 {
  margin-top: 0;
}

.instructions ul {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
}

.controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.controls label {
  font-weight: 600;
}

#categoria {
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: white;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.card img,
.card picture {
  display: block;
  width: 100%;
  height: auto;
}

.card-content {
  padding: 1.3rem;
}

.card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.card p {
  margin: 0.75rem 0;
  color: var(--muted);
}

.card .price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.tag {
  display: inline-flex;
  padding: 0.3rem 0.7rem;
  border-radius: 9999px;
  background: #e0e7ff;
  color: #1d4ed8;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.no-data {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
}

.page-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
}

@media (max-width: 600px) {
  .controls {
    justify-content: stretch;
  }
}