:root {
  --bg: #ffffff;
  --text: #222;
  --muted: #6b6b6b;
  --accent: #000;
  --container-width: 1200px;
}

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

body {
  font-family: 'Montserrat', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  text-align: center;
}

.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.logo img {
  height: 60px;
  width: auto;
}

.logo h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
}

.catalogos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  justify-content: center;
}

.card {
  position: relative;
  height: 340px;
  border-radius: 12px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.card:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 22px rgba(0,0,0,0.15);
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 20px;
  transition: background 0.3s ease;
}

.card:hover .overlay {
  background: rgba(0,0,0,0.7);
}

.overlay h2 {
  font-size: 24px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn {
  display: inline-block;
  padding: 10px 22px;
  border: 2px solid #fff;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 6px;
  transition: background 0.3s ease, color 0.3s ease;
}

.btn:hover {
  background: #fff;
  color: #000;
}

@media (max-width: 700px) {
  body { padding: 20px; }
  .logo img { height: 48px; }
  .logo h1 { font-size: 22px; }
  .overlay h2 { font-size: 20px; }
  .card { height: 260px; }
}