:root {
    --primary-color: #6b0020;
    --text-color: #4a4038;
    --background-color: #f8f4e9;
    --card-background: #ffffff;
    --border-color: #e8e0d0;
}

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

body {
    font-family: Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header Styles */
.menu-header {
    background-color: var(--card-background);
    padding: 15px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.back-button {
    color: var(--primary-color);
    font-size: 1.5rem;
    text-decoration: none;
    margin-right: 15px;
}

.logo {
    height: 40px;
    display: flex;
    align-items: center;
}

.logo img {
    height: 100%;
    width: auto;
}

/* Search Bar */
.search-bar {
    padding: 15px;
    background-color: var(--card-background);
    display: flex;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
}

.search-bar input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}

.search-bar button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

/* Category Filter */
.category-filter {
    padding: 15px;
    background-color: var(--card-background);
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    border-bottom: 1px solid var(--border-color);
}

.filter-button {
    background: none;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 16px;
    margin-right: 10px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-button.active {
    background-color: var(--primary-color);
    color: white;
}

/* Menu Content */
.menu-container {
    padding: 15px;
}

.category-section {
    margin-bottom: 30px;
}

.category-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--primary-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
}

.product-card {
    background: var(--card-background);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.product-info {
    padding: 10px;
}

.product-name {
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 1rem;
}

.product-price {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.1rem;
}

/* Loading Spinner */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    display: none;
}

.loading.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-title {
        font-size: 1.3rem;
    }
    
    .product-name {
        font-size: 0.9rem;
    }
}