/* Base Styles */
:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #95a5a6;
    --secondary-dark: #7f8c8d;
    --text-color: #333;
    --light-bg: #f5f7fa;
    --white: #ffffff;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
}

/* Reset and Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm);
    background-color: var(--light-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1 {
    color: #2c3e50;
    text-align: center;
    margin: var(--spacing-md) 0 var(--spacing-lg);
    font-size: 1.75rem;
    line-height: 1.2;
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid #eee;
    padding-bottom: var(--spacing-xs);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    font-size: 1.5rem;
}

/* Layout */
.container {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-lg);
    width: 100%;
}

/* Search Container */
.search-container {
    margin-bottom: var(--spacing-md);
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
}

.product-info {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.product-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: flex-start;
}

.product-header img {
    max-width: 150px;
    height: auto;
    border-radius: 4px;
}

.product-header h3 {
    margin-top: 0;
    color: var(--primary-color);
}

.product-link {
    margin-top: 10px;
}

.product-link a.btn {
    display: inline-block;
    background: #4285f4;
    color: white;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}

.product-link a.btn:hover {
    background: #3367d6;
    text-decoration: none;
}

.search-box {
    display: flex;
    align-items: center;
    margin: 10px 0;
    width: 100%;
    max-width: 400px;
    gap: 10px;
}


.search-box button {
    padding: 0 20px;
    white-space: nowrap;
    margin: 0;
}

.barcode-type {
    font-size: 0.85rem;
    color: var(--secondary-color);
    font-style: italic;
    margin-top: 5px;
}

.barcode-formats {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px dashed #eee;
}

.barcode-formats a {
    color: var(--primary-color);
    text-decoration: none;
    margin: 0 5px;
}

.barcode-formats a:hover {
    text-decoration: underline;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95rem;
}

select,
input {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-color: var(--white);
}

select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

select:focus,
input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
    outline: none;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 12px 20px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    margin-bottom: var(--spacing-sm);
    -webkit-tap-highlight-color: transparent;
}

button:active {
    transform: translateY(1px);
}

button:hover {
    background-color: var(--primary-dark);
}

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

button.secondary:hover {
    background-color: var(--secondary-dark);
}

/* Estilos para o scanner de código de barras */
#scannerContainer {
    position: relative;
    width: 400px;
    height: 300px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid #ccc;
    border-radius: 8px;
    background: #000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0;
    box-sizing: border-box;
}

/* Gradient overlay for camera */
.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.8) 100%);
    pointer-events: none;
    z-index: 1;
}

#interactive {
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
    transform: scaleX(-1); /* Espelha a imagem da câmera */
}

#interactive.viewport {
    position: relative;
}

#interactive.viewport {
    position: relative;
    width: 100%;
    height: 100%;
    margin: 0 auto;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

#interactive.viewport canvas,
#interactive.viewport video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transform: none;
}

/* Estilo para o quadrado de detecção */
.drawingBuffer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Estilo para o texto de detecção */
.detection-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    color: white;
    background: rgba(0, 0, 0, 0.7);
    padding: 12px;
    font-size: 16px;
    z-index: 10;
    backdrop-filter: blur(4px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transform: scaleX(-1); /* Corrige o texto invertido horizontalmente */
}

/* Corrige o texto dentro do parágrafo no container #interactive */
#interactive > p {
    transform: scaleX(-1);
}

/* Estilo para o código detectado */
.code-detected {
    color: #4CAF50;
    font-weight: bold;
    font-size: 1.2em;
    text-decoration: underline;
    text-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

/* Estilo para o quadrado de foco */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* Animação para o quadrado de foco */
@keyframes scanline {
    from { transform: translateY(-100%); }
    to { transform: translateY(100%); }
}

.scanline {
    position: absolute;
    width: 100%;
    height: 2px;
    background: rgba(76, 175, 80, 0.5);
    animation: scanline 2s linear infinite;
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.5);
    z-index: 3;
}

/* Responsive Grid for Buttons */
.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* Results and Lists */
#listaCodigos {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

#listaCodigos li {
    background: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: 8px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    word-break: break-all;
}

/* Scanner Container */
#scannerContainer {
    width: 100% !important;
    max-width: 800px;
    height: 60vh;
    min-height: 400px;
    margin: 20px auto 40px; /* Mais margem na parte inferior */
    border: 2px solid #4CAF50;
    border-radius: 8px;
    overflow: hidden;
    background: #000;
    position: relative;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Container dos botões do scanner */
.scanner-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
    padding: 0 10px;
}

/* Estilo base para os botões do scanner */
.scanner-btn {
    padding: 10px 25px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Botão Iniciar */
.scanner-btn.start {
    background: #4CAF50;
    color: white;
}

/* Botão Parar */
.scanner-btn.stop {
    background: #f44336;
    color: white;
}

/* Efeito hover para os botões */
.scanner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.scanner-btn:active {
    transform: translateY(0);
}

#scannerContainer p {
    color: white;
    font-size: 1.2em;
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 8px;
    z-index: 10;
}

#interactive {
    width: 100% !important;
    height: 100% !important;
    margin: 0;
    padding: 0;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#interactive.viewport {
    position: relative;
    width: 100% !important;
    height: 100% !important;
    display: flex;
    justify-content: center;
    align-items: center;
}

#interactive.viewport video,
#interactive.viewport canvas {
    position: absolute !important;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    transform: scaleX(-1); /* Espelha a imagem da câmera */
}

/* Estilo para o texto de instrução do scanner */
.drawingBuffer {
    display: none;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin: 20px 0;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Spinner */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.searching-message {
    margin-top: 20px;
}

.searching-sources {
    color: #666;
    font-size: 0.9em;
    margin: 5px 0;
}

.barcode-formats {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
    width: 100%;
    max-width: 600px;
}

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

.searching-message {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.searching-message p {
    margin: 0 0 10px;
    color: #333;
    line-height: 1.5;
}

.searching-sources {
    color: #666 !important;
    font-size: 0.9em;
    margin: 5px 0 !important;
}

.barcode-formats {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
    width: 100%;
    max-width: 600px;
}

.barcode-formats small {
    display: inline-block;
    color: #666;
    font-size: 0.85em;
}

.barcode-formats a {
    color: #4CAF50;
    text-decoration: none;
    margin: 0 4px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.barcode-formats a:hover {
    color: #3d8b40;
    text-decoration: underline;
}

.searching-sources {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

/* Product Info */
.product-info {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    margin: var(--spacing-md) 0;
    width: 100%;
}

.product-info h3 {
    color: #2c3e50;
    margin: 0 0 var(--spacing-sm) 0;
    font-size: 1.3rem;
    border-bottom: 1px solid #eee;
    padding-bottom: var(--spacing-xs);
}

.product-meta {
    color: var(--secondary-dark);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.product-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: 0 auto var(--spacing-md);
    display: block;
    max-height: 300px;
    object-fit: contain;
}

.product-details {
    margin: var(--spacing-md) 0;
}

.product-details p {
    margin-bottom: var(--spacing-xs);
    line-height: 1.5;
}

.source {
    color: var(--secondary-color);
    font-size: 0.85rem;
    text-align: right;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-xs);
    border-top: 1px solid #eee;
}

/* Product Not Found */
.product-not-found {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background: #f8f9fa;
    border-radius: var(--border-radius);
    border: 1px dashed #dee2e6;
}

.product-not-found p {
    margin-bottom: var(--spacing-md);
}

.product-not-found ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0;
}

.product-not-found li {
    margin-bottom: var(--spacing-sm);
}

.product-not-found a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.product-not-found a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Error State */
.error {
    background: #fde8e8;
    border-left: 4px solid #e74c3c;
    padding: var(--spacing-md);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin: var(--spacing-md) 0;
}

.error p {
    margin-bottom: var(--spacing-xs);
}

.error p:last-child {
    margin-bottom: 0;
}

.product-image {
    max-width: 100%;
    height: auto;
    max-height: 200px;
    border-radius: 4px;
    margin: var(--spacing-sm) 0;
    display: block;
    box-shadow: var(--shadow);
}

.ingredients {
    background: #f8f9fa;
    padding: var(--spacing-sm);
    border-radius: 6px;
    font-size: 0.95em;
    line-height: 1.5;
    margin: var(--spacing-sm) 0;
}

/* Estilos para o campo de busca de países */
.country-search-container {
    margin-bottom: var(--spacing-md);
}

.country-search-container .search-box {
    position: relative;
}

.country-search-container .search-icon {
    position: absolute;
    left: 15px;
    top: 35%;
    transform: translateY(-50%);
    font-size: 16px;
    width: 16px;
    height: 16px;
    pointer-events: none;
    color: var(--secondary-color);
}

.country-search-container #countrySearch {
    padding-left: 40px;
}

.search-box {
    display: flex;
    align-items: center;
    margin: 10px 0;
    width: 100%;
    max-width: 400px;
    gap: 10px;
}

#countrySearch {
    width: 100%;
    padding: 11px 15px 11px 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    height: 42px;
    box-sizing: border-box;
    line-height: 1.2;
}

#countrySearch:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    pointer-events: none;
    font-size: 16px;
    line-height: 1;
    width: 16px;
    height: 16px;
}

#countrySelect {
    width: 100%;
    max-width: 400px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: white;
    margin-top: 5px;
}

#countrySelect:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.error {
    color: #e74c3c;
    background: #fde8e8;
    padding: var(--spacing-sm);
    border-radius: 6px;
    border-left: 4px solid #e74c3c;
    margin: var(--spacing-sm) 0;
    font-size: 0.95em;
}

.success {
    color: #27ae60;
    background: #e8f8f0;
    padding: var(--spacing-sm);
    border-radius: 6px;
    border-left: 4px solid #27ae60;
    margin: var(--spacing-sm) 0;
    font-size: 0.95em;
}

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

.loading {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin: 20px 0;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Results and Containers */
.result-box {
    background: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 0 4px 4px 0;
    font-size: 0.95em;
}

.barcode-container {
    text-align: center;
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.barcode {
    font-family: 'Libre Barcode 39', cursive;
    font-size: 2.5rem;
    letter-spacing: 2px;
    line-height: 1.2;
    word-break: break-all;
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 4px;
}

.tab {
    padding: 10px 16px;
    cursor: pointer;
    background: #f1f1f1;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 5px 5px 0 0;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    white-space: nowrap;
}

.tab:hover {
    background: #e9ecef;
}

.tab.active {
    background: var(--white);
    border-bottom: 1px solid var(--white);
    font-weight: 600;
    color: var(--primary-color);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

/* Responsive Design */
@media (min-width: 480px) {
    body {
        padding: var(--spacing-md);
    }

    .container {
        padding: var(--spacing-lg);
    }

    .button-group {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    button {
        margin-bottom: 0;
    }

    .barcode {
        font-size: 3rem;
    }
}

@media (min-width: 768px) {
    html {
        font-size: 17px;
    }

    body {
        padding: var(--spacing-lg);
    }

    .container {
        padding: var(--spacing-xl);
    }

    .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }

    .barcode {
        font-size: 4rem;
    }
}

/* Large screens */
@media (min-width: 1024px) {
    html {
        font-size: 18px;
    }

    .container {
        max-width: 1000px;
        margin: 0 auto var(--spacing-xl);
    }

    .barcode {
        font-size: 5rem;
    }
}

/* Very small devices (320px and below) */
@media (max-width: 320px) {
    :root {
        --spacing-xs: 6px;
        --spacing-sm: 10px;
        --spacing-md: 16px;
        --spacing-lg: 24px;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    button, select, input {
        padding: 10px 12px;
    }

    .barcode {
        font-size: 2rem;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        padding: 0;
        font-size: 12pt;
    }

    .container {
        box-shadow: none;
        padding: 0;
        margin: 0;
    }

    button, .tabs, .tab {
        display: none !important;
    }

    .barcode {
        font-size: 3rem;
    }
}