/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-sm);
  line-height: 1;
  letter-spacing: 0.01em;
  transition: transform var(--t-fast), background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
  border: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 1.1rem 1.8rem; font-size: var(--fs-base); }

.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
}
.btn-primary:hover { background: var(--color-ochre); color: white; }

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.btn-ghost:hover { background: var(--color-ink); color: var(--color-paper); }

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: white;
}
.btn-whatsapp:hover { background: var(--color-whatsapp-dark); color: white; }

.btn-outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn-outline:hover { border-color: var(--color-ink); }

/* Cards */
.card {
  display: flex;
  flex-direction: column;
  background: var(--color-paper-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--t-base), box-shadow var(--t-base);
  border: 1px solid var(--color-line);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-img {
  aspect-ratio: 4 / 3;
  background-color: var(--color-ochre-soft);
  background-size: cover;
  background-position: center;
}
.card-body { padding: var(--space-5); }
.card-body h3 { margin-bottom: var(--space-2); }
.card-body p { color: var(--color-muted); font-size: var(--fs-sm); margin-bottom: var(--space-3); }
.card-link {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-ochre);
}

.category .card-img { background-color: var(--color-moss-soft); }

/* Badges */
.badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--color-ochre-soft);
  color: var(--color-ochre);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* Grids */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Formularios */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-paper-2);
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px rgba(26,26,26,0.08);
}
.form-textarea { resize: vertical; min-height: 140px; }

/* Checklist */
.checklist { display: flex; flex-direction: column; gap: var(--space-2); margin: var(--space-4) 0; }
.checklist li {
  position: relative;
  padding-left: 2rem;
  font-size: var(--fs-base);
}
.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  width: 1.4rem;
  height: 1.4rem;
  background: var(--color-moss);
  color: var(--color-paper);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}