:root {
    --primary-red: #f44336;
    --dark-red: #d32f2f;
    --text-color: #333;
    --light-grey: #e0e0e0;
    --background-grey: #f5f5f5;
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    /* Fondo con patrón rojo */
    background-color: var(--primary-red);
    background-image: url('data:image/svg+xml,%3Csvg width="16" height="16" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath fill="%23d32f2f" d="M0 0h1v16H0V0zm15 0h1v16h-1V0zM8 0h1v16H8V0zM0 8h16v1H0V8zM0 15h16v1H0v-1zM0 0h16v1H0V0zm15 0v16h1V0h-1zm-7-1v18h1V-1h-1zM0 8h16v1H0V8zM-1 15h18v1H-1v-1z"/%3E%3C/svg%3E');
    background-repeat: repeat;
    background-size: 16px;
    background-attachment: fixed;
}

/* --- Estilos del Encabezado --- */
.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background-color: #fff;
    border-bottom: 1px solid var(--light-grey);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-link {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-title-group {
    text-align: center;
}

.header-subtitle {
    font-size: 14px;
    color: #888;
    display: block;
}

.header-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    line-height: 1;
}

/* --- Estilos de la barra de búsqueda y filtros --- */
.search-and-filters {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    padding: 20px 5%;
    max-width: 1200px;
    margin: 20px auto;
}

.search-container {
    position: relative;
    display: flex;
    justify-content: center;
    margin: 24px 0;
}

.search-container input {
    padding: 8px 38px 8px 16px; /* más espacio a la derecha para la lupa */
    width: 350px;
    border-radius: 24px;
    border: 2px solid #e53935;
    background: #fff;
    outline: none;
    transition: all 0.3s ease;
    font-size: 1.1em;
    box-sizing: border-box;
}

.search-container input:focus {
    width: 400px;
    box-shadow: 0 0 8px rgba(229, 57, 53, 0.3);
}

.search-icon {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 1.25em;
    color: #e53935;
}

.search-bar {
    display: flex;
    align-items: center;
    flex-grow: 1;
    background-color: #fff;
    border: 1px solid var(--light-grey);
    border-radius: 50px;
    padding: 10px 20px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.search-bar i {
    color: #999;
    margin-right: 10px;
}

.search-bar input {
    border: none;
    outline: none;
    width: 100%;
    font-size: 16px;
}

.filters-btn {
    display: none !important;
}

/* --- Estilos de las categorías --- */
.categories {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 15px;
    padding: 10px 5%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 1200px;
    margin: 0 auto 20px;
}

.category-item {
    background-color: #fff;
    color: #666;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid var(--light-grey);
    transition: background-color 0.2s, color 0.2s;
}

.category-item.active {
    background-color: var(--primary-red);
    color: #fff;
    border-color: var(--primary-red);
}

/* --- Estilos del Contenedor del Menú (Cuadrícula) --- */
.menu-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: stretch;
}

/* --- Estilos de las Tarjetas de Platillos --- */
.menu-item {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
}

.menu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.item-image-container {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.item-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.item-tag {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #4caf50;
    color: #fff;
    padding: 4px 8px;
    border-radius: 10px;
    font-size: 12px;
}

.item-tag.picante {
    background-color: #e53935;
}

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

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.item-name {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
}

.item-price {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary-red);
    line-height: 1.2;
    white-space: nowrap;
}

.item-description {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.4;
    flex-grow: 1;
}

.item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.item-time {
    font-size: 14px;
    color: #888;
    display: flex;
    align-items: center;
    gap: 5px;
}

.add-to-cart-btn {
    background-color: var(--primary-red);
    color: #fff;
    border: none;
    border-radius: 20px;
    padding: 8px 15px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
}

.add-to-cart-btn:hover {
    background-color: var(--dark-red);
    transform: scale(1.05);
}

.add-to-cart-btn i {
    margin-right: 5px;
}

/* --- Estilos para productos sin stock --- */
.out-of-stock {
    opacity: 0.7;
    position: relative;
}

.out-of-stock::after {
    content: "Sin stock";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(244, 67, 54, 0.9);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: bold;
    z-index: 10;
}

.add-to-cart-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.add-to-cart-btn:disabled:hover {
    background-color: #ccc;
    transform: none;
}

/* --- Media Queries (Responsividad) --- */
@media (max-width: 768px) {
    .header-main {
        flex-direction: column;
        gap: 10px;
        padding: 15px 5%;
    }
    .header-link {
        font-size: 14px;
    }
    .header-main .back-btn,
    .header-main .cart-btn {
        position: absolute;
        top: 15px;
    }
    .header-main .back-btn { left: 15px; }
    .header-main .cart-btn { right: 15px; }

    .search-and-filters {
        flex-wrap: wrap;
        padding: 15px 5%;
    }

    .categories {
        justify-content: flex-start;
    }
}