/* Estilos espec�ficos para la p�gina de Flutter Navigation Bar */

.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: #3498db;
    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: #2980b9;
    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;
}

/* Overview de Navigation Bar */
.nav-bar-overview {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    margin: 2rem 0;
    align-items: start;
}

.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: 500px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-body {
    flex: 1;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #7f8c8d;
}

.bottom-nav-bar {
    display: flex;
    border-top: 1px solid #ecf0f1;
    padding: 8px 0;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px;
    color: #7f8c8d;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.nav-item.active {
    color: #3498db;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.overview-text h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.overview-text ul {
    margin: 0;
    padding-left: 1.5rem;
}

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

/* Tipos de Navigation Bars */
.nav-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.nav-type {
    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;
}

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

.nav-type h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.type-preview {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
}

.preview-nav-bar {
    display: flex;
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.preview-nav-bar.modern {
}

.preview-item {
    flex: 1;
    padding: 8px;
    text-align: center;
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

.preview-nav-rail {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.rail-item {
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.rail-item.active {
    background: #3498db;
    color: white;
}

/* Propiedades */
.properties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.property-item {
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.property-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-family: 'Courier New', monospace;
    background: #2c3e50;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
}

.property-details {
    margin-top: 1rem;
}

.property-details p {
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

/* Item Properties */
.item-properties {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.item-property {
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.item-property h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-family: 'Courier New', monospace;
}

.code-snippet {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 1rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    margin-top: 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-small {
    width: 250px;
    background: #2c3e50;
    border-radius: 16px;
    padding: 12px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.phone-screen-small {
    border-radius: 8px;
    height: 400px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.nav-example {
    display: flex;
    border-top: 1px solid #ecf0f1;
    margin-top: auto;
}

.nav-example.classic {
    /* Estilos por defecto */
}

.nav-example.colored {
    background: #6c5ce7;
}

.nav-example.badges {
    background: #2d3436;
}

.nav-item-example {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    color: #7f8c8d;
    font-size: 0.7rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-example.colored .nav-item-example {
    color: rgba(255,255,255,0.7);
}

.nav-example.badges .nav-item-example {
    color: rgba(255,255,255,0.7);
}

.nav-item-example.active {
    color: #3498db;
}

.nav-example.colored .nav-item-example.active {
    color: #fdcb6e;
}

.nav-example.badges .nav-item-example.active {
    color: #74b9ff;
}

.nav-item-example i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.icon-with-badge {
    position: relative;
    display: inline-block;
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #e74c3c;
    color: white;
    border-radius: 10px;
    min-width: 16px;
    height: 16px;
    font-size: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
}

.badge:empty {
    width: 8px;
    height: 8px;
}

.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;
}

/* Tabla de comparaci�n */
.comparison-table {
    overflow-x: auto;
    margin: 1.5rem 0;
}

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

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

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

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

/* 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;
}

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

.phone-screen-preview {
    border-radius: 8px;
    height: 450px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-content-preview {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-body-preview {
    flex: 1;
    padding: 2rem;
}

.screen-title {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
    text-align: center;
}

.screen-content {
    color: #7f8c8d;
    text-align: center;
}

.nav-preview {
    border-top: 1px solid #ecf0f1;
}

.preview-nav {
    display: flex;
}

.preview-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    font-size: 0.7rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.preview-nav-item.active {
    color: #3498db;
}

.preview-nav-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

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

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

/* Gesti�n de estado */
.state-management {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.state-approach {
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.state-approach h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* Mejores pr�cticas */
.troubleshooting {
    background: #fffaf0;
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #e67e22;
}

.best-practices-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.practice h3 {
    margin-top: 0;
    margin-bottom: 1rem;
}

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

.practice 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;
}

/* Ejercicios */
.exercises {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.exercise {
    padding: 1.5rem;
    border-radius: 6px;
    border-left: 4px solid #27ae60;
}

.exercise h3 {
    color: #2c3e50;
    margin-top: 0;
    margin-bottom: 1rem;
}

.exercise-hint {
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.exercise-hint p {
    margin: 0;
    font-style: italic;
}

/* Soluci�n de problemas */
.troubleshooting-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.problem {
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-top: 4px solid #e74c3c;
}

.problem h4 {
    color: #2c3e50;
    margin-top: 0;
    margin-bottom: 1rem;
}

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

/* 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 {
    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;
}