:root {
    --primary-color: #4CAF50;
    --secondary-color: #f8f9fa;
    --text-color: #333;
    --light-text: #666;
    --background: #fff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

body {
    background-color: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 100%;
    padding: 20px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

header p {
    color: var(--light-text);
}

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    margin: 10px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #3e8e41;
}

.btn.secondary {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid #ddd;
}

.btn.secondary:hover {
    background-color: #e9ecef;
}

.scanner-container {
    background: var(--background);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.product-info {
    background: var(--background);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.product-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

.product-image {
    width: 150px;
    height: 150px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 5px;
}

.nutrition-facts {
    margin-bottom: 20px;
}

.nutrition-facts h3, .product-details h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nutrition-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.nutrition-item {
    background: var(--secondary-color);
    padding: 15px;
    border-radius: 5px;
    text-align: center;
}

.nutrition-value {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
    margin-bottom: 5px;
}

.nutrition-label {
    font-size: 14px;
    color: var(--light-text);
}

.product-details p {
    margin-bottom: 10px;
}

.manual-input {
    background: var(--background);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.manual-input h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.manual-input input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: var(--light-text);
    font-size: 14px;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .nutrition-grid {
        grid-template-columns: 1fr;
    }
}

.search-container {
    background: var(--background);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.search-container input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.search-results {
    max-height: 300px;
    overflow-y: auto;
    margin-top: 15px;
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.search-result-item {
    padding: 10px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background 0.2s;
}

.search-result-item:hover {
    background: var(--secondary-color);
}

.search-result-item img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    margin-right: 10px;
    vertical-align: middle;
}