:root {
    --color-primary: #8E7F7F;
    --color-secondary: #BBAAAA;
    --color-light: #E7D2CC;
    --color-lighter: #F2E2CE;
    --color-lightest: #FFF8E7;
    --color-white: #ffffff;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-error: #f44336;
    --color-info: #2196F3;
    --shadow-light: 0 2px 8px rgba(142, 127, 127, 0.1);
    --shadow-medium: 0 4px 16px rgba(142, 127, 127, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--color-lightest) 0%, var(--color-lighter) 100%);
    color: var(--color-primary);
    line-height: 1.6;
    padding-bottom: 80px;
    min-height: 100vh;
}

.app-header {
    background: var(--color-white);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header h1 {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 600;
}

.app-main {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.app-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.app-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.section-header p {
    color: var(--color-secondary);
    font-size: 1rem;
}

.welcome-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-card h2 {
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.welcome-card p {
    color: var(--color-secondary);
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--color-lightest);
    padding: 1.5rem 1rem;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-secondary);
}

.pricing-form, .customer-form, .order-form {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-light);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-lightest);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(142, 127, 127, 0.1);
}

.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background: #7a6f6f;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: #a89999;
    transform: translateY(-1px);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.pricing-result {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    margin-bottom: 2rem;
}

.pricing-result h3 {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.result-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--color-lightest);
    border-radius: 8px;
}

.result-item.highlight {
    background: var(--color-light);
    font-weight: bold;
    font-size: 1.1rem;
}

.products-list, .customers-list, .orders-list {
    margin-top: 2rem;
}

.products-list h3, .customers-list h3, .orders-list h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.products-grid, .customers-grid, .orders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.product-card, .customer-card, .order-card {
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover, .customer-card:hover, .order-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.product-card h4, .customer-card h4, .order-card h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.product-card .price {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--color-success);
    margin-bottom: 0.5rem;
}

.product-card .details, .customer-card .details, .order-card .details {
    color: var(--color-secondary);
    font-size: 0.9rem;
}

.market-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.tool-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

.tool-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.tool-card form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tool-card input {
    flex: 1;
    padding: 0.5rem;
    border: 2px solid var(--color-light);
    border-radius: 6px;
    background: var(--color-lightest);
}

.tool-card button {
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.tool-card button:hover {
    background: #7a6f6f;
}

.trend-results, .price-analysis {
    margin-top: 1rem;
}

.trend-item, .price-item {
    background: var(--color-lightest);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.market-insights {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

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

.insights-content {
    display: grid;
    gap: 1rem;
}

.insight-item {
    background: var(--color-lightest);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
}

.insight-item h4 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.customer-actions, .order-actions {
    margin-bottom: 2rem;
    text-align: center;
}

.search-bar {
    margin-bottom: 1rem;
}

.search-bar input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-light);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--color-white);
}

.order-filters {
    margin-bottom: 1rem;
}

.order-filters select {
    padding: 0.5rem;
    border: 2px solid var(--color-light);
    border-radius: 6px;
    background: var(--color-white);
}

.order-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

.status-pendente { background: var(--color-warning); color: white; }
.status-producao { background: var(--color-info); color: white; }
.status-pronto { background: var(--color-success); color: white; }
.status-entregue { background: var(--color-secondary); color: white; }

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.resource-category {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
}

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

.resource-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.resource-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--color-lightest);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-primary);
    transition: var(--transition);
}

.resource-link:hover {
    background: var(--color-light);
    transform: translateX(5px);
}

.resource-link i {
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.faq-section {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    margin-top: 2rem;
}

.faq-section h2 {
    color: var(--color-primary);
    text-align: center;
    margin-bottom: 2rem;
}

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

.faq-item {
    border: 1px solid var(--color-light);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1rem;
    background: var(--color-lightest);
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-light);
}

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

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

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: var(--transition);
}

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

.faq-answer[hidden] {
    display: none;
}

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

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-light);
    padding: 0.5rem 0;
    display: flex;
    justify-content: space-around;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--color-secondary);
    padding: 0.5rem;
    border-radius: 8px;
    transition: var(--transition);
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

.nav-item.active {
    color: var(--color-primary);
    background: var(--color-lightest);
}

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

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--color-secondary);
    font-size: 0.9rem;
    margin-top: 2rem;
    background: var(--color-white);
    border-top: 1px solid var(--color-light);
}

.hidden {
    display: none !important;
}

@media (max-width: 768px) {
    .app-main {
        padding: 0.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .products-grid, .customers-grid, .orders-grid {
        grid-template-columns: 1fr;
    }
    
    .market-tools {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .nav-item span {
        font-size: 0.6rem;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .app-header h1 {
        font-size: 1.2rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .pricing-form, .customer-form, .order-form {
        padding: 1.5rem;
    }
    
    .tool-card {
        padding: 1.5rem;
    }
    
    .tool-card form {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}