/* Estilos espec�ficos para la p�gina de Flutter ListView.builder */

.tutorial-article {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.article-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid #ecf0f1;
}

.article-title {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 300;
}

.article-subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #02569B;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: #0175C2;
    transform: translateY(-2px);
}

.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-section h3 {
    color: #34495e;
    font-size: 1.3rem;
    margin: 1.5rem 0 1rem 0;
}

.content-section h4 {
    color: #2c3e50;
    font-size: 1.2rem;
    margin: 1.5rem 0 1rem 0;
}

.content-section p {
    line-height: 1.7;
    margin-bottom: 1rem;
    color: #555;
}

/* Demo b�sico de ListView.builder */
.builder-demo-basic {
    margin: 2rem 0;
    padding: 2rem;
    border-radius: 8px;
}

.demo-comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
}

.comparison-item {
    flex: 1;
    text-align: center;
}

.comparison-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.list-visual {
    border: 2px solid #bdc3c7;
    border-radius: 8px;
    min-height: 200px;
    margin-bottom: 1rem;
}

.normal-list .list-item {
    padding: 12px 16px;
    border-bottom: 1px solid #ecf0f1;
    background: #3498db;
    color: white;
    margin: 2px;
    border-radius: 4px;
}

.list-overflow {
    padding: 12px 16px;
    background: #e74c3c;
    color: white;
    font-style: italic;
    margin: 2px;
    border-radius: 4px;
}

.builder-list .visible-items {
    border-bottom: 2px dashed #27ae60;
}

.builder-list .list-item {
    padding: 12px 16px;
    border-bottom: 1px solid #ecf0f1;
    background: #27ae60;
    color: white;
    margin: 2px;
    border-radius: 4px;
}

.virtual-items {
    padding: 20px;
    background: #f1f2f6;
    color: #7f8c8d;
    text-align: center;
    font-style: italic;
}

.comparison-arrow {
    font-size: 2rem;
    color: #7f8c8d;
}

.comparison-desc {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: italic;
}

/* Par�metros principales */
.parameters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.parameter-item {
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-top: 4px solid #3498db;
    text-align: center;
}

.parameter-icon {
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.parameter-item h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.code-snippet {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 1rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    margin-top: 1rem;
    text-align: left;
}

/* Casos de uso */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.use-case {
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-top: 4px solid #3498db;
}

.use-case-icon {
    font-size: 2rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.use-case h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Ejemplos visuales */
.visual-examples {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin: 2rem 0;
}

.example-item {
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.example-visual {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
}

/* Phone mockup */
.phone-mockup {
    width: 300px;
    background: #2c3e50;
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.phone-screen {
    border-radius: 10px;
    height: 400px;
    overflow: hidden;
}

/* List styles */
.list-container {
    height: 100%;
    overflow-y: auto;
}

.list-item-tile {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #ecf0f1;
    transition: background-color 0.2s;
}

.list-item-tile:hover {
}

.tile-leading {
    width: 40px;
    height: 40px;
    background: #3498db;
    color: white;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 12px;
}

.tile-content {
    flex: 1;
}

.tile-title {
    font-weight: 600;
    color: #2c3e50;
}

.tile-subtitle {
    font-size: 0.9rem;
    color: #7f8c8d;
}

.tile-trailing {
    color: #bdc3c7;
}

/* Horizontal list */
.horizontal-list {
    display: flex;
    padding: 16px;
    gap: 8px;
    overflow-x: auto;
}

.horizontal-item {
    padding: 8px 16px;
    background: #3498db;
    color: white;
    border-radius: 20px;
    white-space: nowrap;
    font-size: 0.9rem;
}

/* Custom list */
.custom-list {
    padding: 16px;
}

.custom-item {
    border: 1px solid #ecf0f1;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.item-title {
    font-weight: 600;
    color: #2c3e50;
}

.item-price {
    font-weight: bold;
    color: #27ae60;
}

.item-description {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.item-rating {
    color: #f39c12;
}

.example-code {
    background: #2c3e50;
    border-radius: 6px;
    overflow: hidden;
}

.example-code pre {
    margin: 0;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    max-height: 300px;
    overflow-y: auto;
}

/* Tablas */
.properties-table,
.comparison-table {
    overflow-x: auto;
    margin: 1.5rem 0;
}

.properties-table table,
.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.properties-table th,
.comparison-table th {
    background: #3498db;
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.properties-table td,
.comparison-table td {
    padding: 1rem;
    border-bottom: 1px solid #ecf0f1;
}

.properties-table tr:nth-child(even),
.comparison-table tr:nth-child(even) {
}

.comparison-table td:first-child {
    font-weight: 600;
    color: #2c3e50;
}

/* Demo interactivo */
.interactive-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
    padding: 2rem;
    border-radius: 8px;
}

.demo-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    font-weight: 600;
    color: #2c3e50;
}

.form-control {
    padding: 0.75rem;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    border-color: #3498db;
    outline: none;
}

#itemCountValue {
    font-weight: 600;
    color: #3498db;
}

.preview-area {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.list-preview {
    display: flex;
    justify-content: center;
}

.phone-mockup-preview {
    width: 280px;
    background: #2c3e50;
    border-radius: 16px;
    padding: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.phone-screen-preview {
    border-radius: 8px;
    height: 350px;
    overflow: hidden;
}

.list-container-preview {
    height: 100%;
    overflow-y: auto;
    padding: 8px;
}

/* Preview list items */
.preview-item {
    padding: 12px;
    margin-bottom: 6px;
    border-radius: 6px;
    border: 1px solid #ecf0f1;
}

.preview-item.simple {
    background: #3498db;
    color: white;
}

.preview-item.card {
    border: 1px solid #bdc3c7;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.preview-item.tile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.preview-item.custom {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.preview-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.2);
    border-radius: 12px;
}

.preview-info {
    background: #2c3e50;
    border-radius: 6px;
    padding: 1rem;
    max-height: 200px;
    overflow-y: auto;
}

.preview-code code {
    color: #ecf0f1;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.4;
}

/* Horizontal preview */
.list-container-preview.horizontal {
    display: flex;
    overflow-x: auto;
    padding: 16px;
    gap: 8px;
}

.preview-item.horizontal {
    white-space: nowrap;
    min-width: 120px;
    text-align: center;
}

/* Estilos para pasos */
.steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step {
    padding: 1.5rem;
    border-radius: 6px;
    border-left: 4px solid #3498db;
}

.step h3 {
    color: #2c3e50;
    margin-top: 0;
}

/* Estilos para c�digo */
.code-example {
    border: 1px solid #e1e8ed;
    border-radius: 6px;
    padding: 1.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-example h4, .code-example h5 {
    color: #2c3e50;
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.code-example pre {
    margin: 0;
    white-space: pre-wrap;
}

.code-example code {
    font-family: 'Courier New', monospace;
    color: #2c3e50;
    line-height: 1.5;
}

/* Cajas de explicaci�n */
.explanation-box {
    padding: 1.5rem;
    border-radius: 6px;
    border-left: 4px solid #3498db;
    margin: 1.5rem 0;
}

.explanation-box h4 {
    color: #2c3e50;
    margin-top: 0;
}

.explanation-box ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

.explanation-box li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* Estilos para secci�n de problemas */
.troubleshooting {
    background: #fffaf0;
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #e67e22;
}

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

.problem {
    padding: 1.5rem;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.problem h3 {
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.problem ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.problem li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.pro-tip {
    background: #e1f5fe;
    padding: 1.5rem;
    border-radius: 6px;
    border-left: 4px solid #0288d1;
}

.pro-tip h4 {
    color: #0288d1;
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}