:root {
  --primary-color: #2563eb;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
header {
  text-align: center;
  padding: 40px 0;
  background: linear-gradient(135deg, var(--primary-color), #3b82f6);
  color: white;
  border-radius: 12px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-lg);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.fecha {
  font-size: 1.1rem;
  opacity: 0.9;
  text-transform: capitalize;
}

/* NUEVO: Barra de búsqueda */
.search-container {
  margin-bottom: 30px;
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 250px;
}

.search-box input[type="search"] {
  width: 100%;
  padding: 12px 20px;
  font-size: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background: white;
  transition: all 0.2s;
}

.search-box input[type="search"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-box input[type="search"]::placeholder {
  color: var(--text-secondary);
}

/* Categorías */
.categoria-section {
  margin-bottom: 50px;
}

.categoria-titulo {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--primary-color);
}

/* Grid de productos */
.productos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.producto-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.producto-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.producto-imagen {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.producto-imagen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.producto-info {
  padding: 15px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.producto-nombre {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.producto-precio {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

/* Footer */
footer {
  text-align: center;
  padding: 30px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Estados */
.loading, .empty-state, .error-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.error-state {
  color: var(--danger-color);
}

.error-state .btn {
  margin-top: 20px;
}

/* Botones básicos */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  background: var(--primary-color);
  color: white;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  background: #1d4ed8;
}

/* Responsive */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }

  .search-container {
    flex-direction: column;
  }

  .search-box {
    min-width: 100%;
  }
  
  .productos-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
  }
  
  .categoria-titulo {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .productos-grid {
    grid-template-columns: 1fr;
  }
}