:root {
    --primary-dark: #2D5016;
    --primary-medium: #3E7C17;
    --primary-neutral: #52734D;
    --primary-light: #91C788;
    --primary-lightest: #DDFFBC;
    --white: #ffffff;
    --gray-light: #f5f5f5;
    --gray-medium: #e0e0e0;
    --gray-dark: #666666;
    --shadow: rgba(45, 80, 22, 0.1);
    --shadow-strong: rgba(45, 80, 22, 0.2);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-lightest) 0%, var(--white) 100%);
    background-attachment: fixed;
    color: var(--primary-dark);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(45, 80, 22, 0.03) 1px, transparent 0);
    background-size: 20px 20px;
    pointer-events: none;
    z-index: -1;
}

.app-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 100%);
    color: var(--white);
    padding: 1rem;
    box-shadow: 0 4px 20px var(--shadow-strong);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.voice-btn, .share-btn {
    background: var(--primary-light);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    color: var(--primary-dark);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px var(--shadow);
}

.voice-btn:hover, .share-btn:hover {
    background: var(--primary-lightest);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-strong);
}

.voice-btn.recording {
    background: #ff4444;
    color: var(--white);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--primary-light);
    width: var(--progress, 0%);
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress-text {
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.app-nav {
    display: flex;
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 120px;
    z-index: 90;
}

.nav-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 1rem 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--gray-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
}

.nav-btn:hover {
    background: var(--primary-lightest);
    color: var(--primary-dark);
}

.nav-btn.active {
    background: var(--primary-medium);
    color: var(--white);
}

.nav-btn i {
    font-size: 1.2rem;
}

.app-main {
    padding: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.add-item-container {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 1.5rem;
    border: 2px solid var(--primary-lightest);
}

.input-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.input-group input, .input-group select {
    flex: 1;
    min-width: 120px;
    padding: 0.75rem;
    border: 2px solid var(--gray-medium);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.input-group input:focus, .input-group select:focus {
    outline: none;
    border-color: var(--primary-medium);
    box-shadow: 0 0 0 3px rgba(62, 124, 23, 0.1);
}

#quantityInput {
    max-width: 80px;
}

.add-btn {
    background: var(--primary-medium);
    color: var(--white);
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.add-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-strong);
}

.suggestions-container {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-light);
}

.suggestions-container h3 {
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.suggestions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.suggestion-item {
    background: var(--primary-lightest);
    color: var(--primary-dark);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    border: 2px solid transparent;
}

.suggestion-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-medium);
    transform: translateY(-2px);
}

.shopping-list-container {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 1.5rem;
}

.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--gray-light);
}

.list-header h2 {
    color: var(--primary-dark);
}

.clear-btn {
    background: #ff4444;
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.clear-btn:hover {
    background: #cc3333;
    transform: translateY(-2px);
}

.shopping-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-light);
    border-radius: 8px;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-light);
}

.list-item:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 10px var(--shadow);
}

.list-item.completed {
    opacity: 0.6;
    text-decoration: line-through;
    border-left-color: var(--gray-medium);
}

.list-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.item-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-details {
    display: flex;
    flex-direction: column;
}

.item-name {
    font-weight: 600;
    color: var(--primary-dark);
}

.item-category {
    font-size: 0.8rem;
    color: var(--gray-dark);
}

.item-quantity {
    background: var(--primary-medium);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.item-price {
    color: var(--primary-medium);
    font-weight: 600;
}

.delete-item {
    background: #ff4444;
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.delete-item:hover {
    background: #cc3333;
    transform: scale(1.1);
}

.price-calculator {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-bottom: 1.5rem;
    border: 2px solid var(--primary-light);
}

.price-calculator h3 {
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.total-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-medium);
    text-align: center;
    padding: 1rem;
    background: var(--primary-lightest);
    border-radius: 8px;
}

.recipes-header, .history-header, .map-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
}

.add-recipe-btn, .find-stores-btn {
    background: var(--primary-medium);
    color: var(--white);
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.add-recipe-btn:hover, .find-stores-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.recipes-list, .history-list, .stores-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.recipe-item, .history-item, .store-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    border-left: 4px solid var(--primary-light);
    transition: all 0.3s ease;
}

.recipe-item:hover, .history-item:hover, .store-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--shadow-strong);
}

.recipe-header, .history-header-item, .store-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.recipe-name, .history-date, .store-name {
    font-weight: 600;
    color: var(--primary-dark);
}

.recipe-actions, .store-actions {
    display: flex;
    gap: 0.5rem;
}

.use-recipe-btn, .delete-recipe-btn, .select-store-btn {
    background: var(--primary-light);
    color: var(--primary-dark);
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.use-recipe-btn:hover, .select-store-btn:hover {
    background: var(--primary-medium);
    color: var(--white);
}

.delete-recipe-btn:hover {
    background: #ff4444;
    color: var(--white);
}

.route-map {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin-top: 1rem;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-placeholder {
    text-align: center;
    color: var(--gray-dark);
}

.map-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--primary-light);
}

.price-chart {
    background: var(--gray-light);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    color: var(--gray-dark);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px var(--shadow-strong);
    position: relative;
}

.close {
    color: var(--gray-dark);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 1rem;
}

.close:hover {
    color: var(--primary-dark);
}

.modal h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-dark);
}

.modal input, .modal textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 2px solid var(--gray-medium);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
}

.modal input:focus, .modal textarea:focus {
    outline: none;
    border-color: var(--primary-medium);
    box-shadow: 0 0 0 3px rgba(62, 124, 23, 0.1);
}

.modal textarea {
    min-height: 100px;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.save-btn, .cancel-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.save-btn {
    background: var(--primary-medium);
    color: var(--white);
}

.save-btn:hover {
    background: var(--primary-dark);
}

.cancel-btn {
    background: var(--gray-medium);
    color: var(--gray-dark);
}

.cancel-btn:hover {
    background: var(--gray-dark);
    color: var(--white);
}

.faq-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
    margin: 2rem 0;
}

.faq-section h2 {
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    text-align: center;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    width: 100%;
    background: var(--gray-light);
    border: none;
    padding: 1rem 1.5rem;
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--primary-lightest);
}

.faq-question[aria-expanded="true"] {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 1rem 1.5rem;
    background: var(--white);
    border-top: 1px solid var(--gray-light);
    animation: slideDown 0.3s ease;
}

.faq-answer p {
    color: var(--gray-dark);
    line-height: 1.6;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding: 0 1.5rem;
    }
    to {
        opacity: 1;
        max-height: 200px;
        padding: 1rem 1.5rem;
    }
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--primary-medium);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--shadow-strong);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 1001;
}

.notification.show {
    transform: translateX(0);
}

.voice-status {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-dark);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    box-shadow: 0 10px 40px var(--shadow-strong);
    display: none;
    z-index: 1002;
    animation: pulse 1s infinite;
}

footer {
    background: var(--primary-dark);
    color: var(--white);
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header-content h1 {
        font-size: 1.2rem;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .input-group input, .input-group select {
        min-width: auto;
    }
    
    .nav-btn {
        padding: 0.75rem 0.25rem;
        font-size: 0.7rem;
    }
    
    .nav-btn i {
        font-size: 1rem;
    }
    
    .modal-content {
        margin: 20% auto;
        width: 95%;
        padding: 1.5rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .save-btn, .cancel-btn {
        width: 100%;
    }
    
    .faq-question {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .faq-answer {
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    .app-main {
        padding: 0.5rem;
    }
    
    .add-item-container, .suggestions-container, .shopping-list-container, .price-calculator {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .header-actions {
        gap: 0.25rem;
    }
    
    .voice-btn, .share-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .progress-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .progress-text {
        font-size: 0.8rem;
    }
}