:root {
    --color-principal: #111111; /* Negro */
    --color-acento: #D32F2F; /* Rojo */
    --color-fondo: #FFFFFF; /* Blanco */
    --color-secundario: #F5F5F5; /* Gris */
    --color-whatsapp: #25D366; /* Verde */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--color-secundario);
    color: var(--color-principal);
}

/* Header & Navegación */
header {
    background-color: var(--color-principal);
    color: var(--color-fondo);
    padding: 1rem 0;
}

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-fondo);
    text-decoration: none;
}

.logo span {
    color: var(--color-acento);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--color-fondo);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--color-acento);
}

/* Buscador */
.search-section {
    background-color: var(--color-fondo);
    padding: 20px 0;
    border-bottom: 1px solid #ddd;
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input, .search-form select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    flex: 1;
}

.btn-search {
    background-color: var(--color-principal);
    color: var(--color-fondo);
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 4px;
    font-weight: bold;
}

.btn-search:hover {
    background-color: #333;
}

/* Banner de Alerta Crítica */
.critical-rule {
    background-color: #fff3cd;
    color: #856404;
    padding: 15px;
    text-align: center;
    font-weight: bold;
    border-bottom: 1px solid #ffeeba;
}

/* Productos */
.productos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 40px 0;
}

.producto-card {
    background-color: var(--color-fondo);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.producto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.producto-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.producto-info {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.producto-categoria {
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
    margin-bottom: 5px;
}

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

.producto-detalles {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 15px;
    flex-grow: 1;
}

.producto-precio {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--color-acento);
    margin-bottom: 15px;
}

.btn-whatsapp {
    background-color: var(--color-whatsapp);
    color: var(--color-fondo);
    text-align: center;
    padding: 10px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    display: block;
    transition: background-color 0.3s;
}

.btn-whatsapp:hover {
    background-color: #1DA851;
}

/* Footer */
footer {
    background-color: var(--color-principal);
    color: var(--color-fondo);
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}