:root {
    --bg-light: #F7F8FA;
    --bg-white: #FFFFFF;
    --primary-blue: #0D47A1;
    --secondary-blue: #1976D2;
    --action-green: #2E7D32;
    --action-green-hover: #1B5E20;
    --text-dark: #212121;
    --text-secondary: #616161;
    --border-color: #E0E0E0;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.07);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7;
    color: var(--text-secondary);
    background-color: var(--bg-light);
    transition: margin-right 0.3s ease; /* Para el menú móvil */
}

body.mobile-nav-active {
    overflow: hidden;
}

a {
    color: var(--secondary-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-blue);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 60px 0;
}

/* Header */
#header {
    background: var(--bg-white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1020; /* Aumentado para estar sobre el overlay */
    height: 75px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

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

#logo img {
    max-height: 50px;
}

#navbar ul {
    list-style: none;
    display: flex;
    gap: 10px;
    margin: 0; 
    padding: 0;
    align-items: center;
}

#navbar a {
    padding: 8px 15px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-blue);
    border-radius: 8px;
    transition: all 0.3s ease;
}

#navbar a:hover, #navbar li:hover > a {
    background-color: #e3f2fd;
}

#navbar .active {
    background-color: var(--primary-blue);
    color: var(--bg-white);
}

#navbar .btn-contact {
    background-color: var(--action-green);
    color: var(--bg-white);
}

#navbar .btn-contact:hover {
    background-color: var(--action-green-hover);
    color: var(--bg-white);
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.icon-link {
    font-size: 1.2rem;
    color: var(--primary-blue);
    position: relative;
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -10px;
    background-color: var(--action-green);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Estilos del Menú Móvil --- */
#mobile-nav-toggle {
    display: none;
    font-size: 1.8rem;
    color: var(--primary-blue);
    cursor: pointer;
    background: none;
    border: none;
    z-index: 1031; /* Encima de todo */
}

#mobile-nav-menu {
    position: fixed;
    top: 0;
    right: -280px; /* Oculto por defecto */
    width: 280px;
    height: 100%;
    background-color: var(--bg-white);
    box-shadow: -4px 0 15px rgba(0,0,0,0.1);
    z-index: 1030;
    padding: 80px 20px 20px 20px;
    transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#mobile-nav-menu a {
    display: block;
    padding: 12px 15px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
    border-radius: 8px;
}

#mobile-nav-menu a:hover {
    background-color: #e3f2fd;
}

#mobile-nav-menu .active {
    background-color: var(--primary-blue);
    color: var(--bg-white);
}

#mobile-nav-menu .btn-contact {
    background-color: var(--action-green);
    color: var(--bg-white);
    text-align: center;
}

#mobile-nav-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 10px 0;
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.4);
    z-index: 1010;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
}

body.mobile-nav-active #mobile-nav-menu {
    right: 0;
}

body.mobile-nav-active .mobile-nav-overlay {
    opacity: 1;
    visibility: visible;
}


/* Hero Section */
#tienda-hero {
    background: var(--primary-blue);
    color: var(--bg-white);
    text-align: center;
    padding: 40px 0;
}

#tienda-hero h1 {
    font-size: 2.8rem;
    color: var(--bg-white);
}

/* Filtros */
.filtros {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    align-items: center;
}

.filtros input[type="search"], .filtros select {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    flex-grow: 1; /* Para que ocupen espacio */
}

.btn-outline-secondary {
    padding: 12px 20px;
    border: 1px solid var(--primary-blue);
    background-color: transparent;
    color: var(--primary-blue);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-grow: 1; /* Para que ocupe espacio en móvil */
}

.btn-outline-secondary:hover {
    background-color: #e3f2fd;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.product-card {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--card-shadow-hover);
}

.product-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-title {
    font-size: 1.1rem; /* Ligeramente más pequeño */
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.product-description {
    font-size: 0.9rem;
    margin-bottom: 15px;
    flex-grow: 1;
}

.product-price-container {
    margin-bottom: 15px;
}

.product-price {
    font-size: 1.3rem; /* Ligeramente más pequeño */
    font-weight: 700;
    color: var(--primary-blue);
}

.product-price-unit {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.btn-add-to-cart {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--secondary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: auto;
}

.btn-add-to-cart:hover {
    background-color: var(--primary-blue);
}

/* Paginación */
.pagination-container {
    display: flex;
    justify-content: center; /* Centrar los botones de paginación */
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.items-per-page-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-grow: 1; /* Para que se comporte como los otros filtros en móvil */
}

.items-per-page-selector label {
    font-weight: 600;
    font-size: 0.9rem;
}

.items-per-page-selector select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-grow: 1; /* Para que ocupe espacio */
}
.pagination button {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-white);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.pagination button:hover {
    background-color: var(--secondary-blue);
    color: white;
    border-color: var(--secondary-blue);
}
.pagination button.active {
    background-color: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}
.pagination button:disabled {
    background-color: #e9ecef;
    cursor: not-allowed;
}

/* Footer */
#footer {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    background: var(--primary-blue);
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
}

/* --- Responsive Design --- */

/* Tablets y dispositivos medianos */
@media (max-width: 992px) {
    #navbar {
        display: none; /* Ocultar menú de escritorio */
    }
    #mobile-nav-toggle {
        display: block; /* Mostrar botón de hamburguesa */
    }
    .header-icons {
        display: none; /* Ocultar íconos de escritorio */
    }
}

/* Móviles */
@media (max-width: 768px) {
    .section {
        padding: 40px 0;
    }

    #tienda-hero h1 {
        font-size: 2.2rem;
    }

    .filtros {
        flex-direction: column;
    }

    .filtros input[type="search"],
    .filtros select,
    .btn-outline-secondary {
        width: 100%;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas en tablets pequeñas */
        gap: 15px;
    }

    .pagination-container {
        flex-direction: column;
        justify-content: center;
    }
}

/* Móviles muy pequeños */
@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr; /* 1 columna */
    }

    .product-title {
        font-size: 1rem;
    }

    .product-price {
        font-size: 1.2rem;
    }

    .pagination button {
        padding: 8px 12px;
    }
}