/* Variables de color y tipografía */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    
    --font-main: 'Roboto', sans-serif;
    --font-code: 'Source Code Pro', monospace;
    
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Reset adicional */
.sem-header, .sem-footer {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Estilos del encabezado */
.sem-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.sem-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 L0,100 Z" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    opacity: 0.5;
}

.sem-header .container {
    position: relative;
    z-index: 1;
}

.sem-header h1 {
    font-size: 2.5rem;
    margin: 1rem 0 0.5rem;
}

.sem-header .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--light-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    opacity: 0.7;
}

/* Contenedor principal */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Estilos de secciones */
.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.8rem;
}

.content-section h2 i {
    color: var(--secondary-color);
}

/* Grid container para soluciones web */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    transition: var(--transition);
    border-top: 4px solid var(--secondary-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-tags span {
    background: var(--light-color);
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--dark-color);
}

/* Sistema de pestañas */
.tabs {
    margin-bottom: 2rem;
}

.tab-header {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    font-weight: 500;
    color: #666;
}

.tab-btn.active {
    color: var(--secondary-color);
    border-bottom-color: var(--secondary-color);
}

.tab-btn:hover:not(.active) {
    color: var(--primary-color);
    background: rgba(0, 0, 0, 0.03);
}

.tab-content {
    display: none;
    padding: 1rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.tab-content.active {
    display: block;
}

.tab-content ul {
    padding-left: 1.5rem;
}

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

/* Protocolos de red */
.protocol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.protocol-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.protocol-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.protocol-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.protocol-card h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.protocol-animation {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
}

.dns-flow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--dark-color);
    font-weight: 500;
}

.dns-flow i {
    color: var(--secondary-color);
}

.protocol-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--dark-color);
}

.protocol-steps span {
    padding: 0.25rem 0.5rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 20px;
}

.http-methods {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.http-methods span {
    padding: 0.25rem 0.75rem;
    background: var(--light-color);
    border-radius: 20px;
    font-family: var(--font-code);
    font-weight: bold;
    font-size: 0.85rem;
}

.http-methods span:nth-child(1) {
    background: #61affe;
    color: white;
}
.http-methods span:nth-child(2) {
    background: #49cc90;
    color: white;
}
.http-methods span:nth-child(3) {
    background: #fca130;
    color: white;
}
.http-methods span:nth-child(4) {
    background: #f93e3e;
    color: white;
}

/* Roles en desarrollo */
.roles-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.role-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.role-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.role-header {
    padding: 1.5rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.role-header.frontend {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.role-header.backend {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.role-header.fullstack {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
}

.role-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.role-header i {
    font-size: 1.5rem;
}

.role-body {
    padding: 1.5rem;
}

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

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

/* Sección de VS Code */
.vscode-section .intro {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: #555;
}

.vscode-features {
    display: grid;
    gap: 2rem;
}

.feature {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
}

.feature h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-color);
    margin-top: 0;
}

.feature h3 i {
    color: var(--secondary-color);
}

.code-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.code-block {
    background: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1rem;
    border-left: 4px solid var(--secondary-color);
}

.code-block h4 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--dark-color);
}

pre {
    margin: 0;
    background: #2d2d2d;
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    color: #f8f8f2;
    font-family: var(--font-code);
    font-size: 0.9rem;
}

.code-result {
    margin-top: 0.75rem;
}

.show-result-btn {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-main);
    transition: var(--transition);
}

.show-result-btn:hover {
    background: #2980b9;
}

/* Atajos de teclado */
.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.shortcut-card {
    background: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    transition: var(--transition);
}

.shortcut-card:hover {
    background: #e9ecef;
}

.shortcut-card kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 0 #ddd;
    font-family: var(--font-code);
    margin-bottom: 0.5rem;
}

.shortcut-card span {
    display: block;
    font-size: 0.9rem;
    color: #555;
}

/* Extensiones */
.extensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.extension-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid #eee;
    transition: var(--transition);
}

.extension-card:hover {
    border-color: var(--secondary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.extension-card h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.extension-card p {
    margin: 0;
    font-size: 0.9rem;
    color: #666;
}

/* Resumen */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.summary-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
}

.summary-card h3 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.key-concepts {
    border-top: 4px solid var(--secondary-color);
}

.tools {
    border-top: 4px solid var(--success-color);
}

.next-steps {
    border-top: 4px solid var(--warning-color);
}

/* Footer */
.sem-footer {
    background: var(--primary-color);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.footer-nav a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.footer-nav a:hover {
    color: var(--secondary-color);
}

.footer-copy {
    text-align: center;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .sem-header h1 {
        font-size: 2rem;
    }
    
    .grid-container, .protocol-grid, .roles-container {
        grid-template-columns: 1fr;
    }
    
    .tab-header {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        flex: 1 0 auto;
        text-align: center;
    }
}

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

.content-section > article {
    animation: fadeIn 0.5s ease forwards;
}

.content-section > article:nth-child(1) { animation-delay: 0.1s; }
.content-section > article:nth-child(2) { animation-delay: 0.2s; }
.content-section > article:nth-child(3) { animation-delay: 0.3s; }
.content-section > article:nth-child(4) { animation-delay: 0.4s; }


/* Variables de color y tipografía - Tema React/TypeScript */
:root {
    --react-color: #61dafb;
    --react-dark: #4fa8c4;
    --typescript-color: #3178c6;
    --typescript-dark: #235a97;
    
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    
    --font-main: 'Roboto', sans-serif;
    --font-code: 'Source Code Pro', monospace;
    
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Estilos base */
.react-section h2 i {
    color: var(--react-color);
}

.typescript-section h2 i {
    color: var(--typescript-color);
}

/* Estilos para demostraciones interactivas */
.interactive-demo {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
}

.demo-btn {
    background-color: var(--react-color);
    color: #333;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.demo-btn:hover {
    background-color: var(--react-dark);
    color: white;
}

.demo-output {
    margin-top: 1rem;
    padding: 1rem;
    background-color: white;
    border-radius: 4px;
    min-height: 20px;
}

/* Estilos para componentes demo */
.user-profile {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    max-width: 500px;
    margin: 0 auto;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.user-info h3 {
    margin: 0;
    color: var(--primary-color);
}

.follow-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.follow-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
}

.unfollow-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    cursor: pointer;
}

.profile-bio {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
}

.toggle-btn {
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    text-decoration: underline;
}

/* Product list styles */
.product-list-container {
    max-width: 800px;
    margin: 0 auto;
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.filters input, .filters select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.price-range {
    flex: 1;
    min-width: 200px;
}

.price-range input {
    width: 100%;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.product-card img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.product-card h3 {
    margin: 0.5rem 0;
    font-size: 1rem;
    color: var(--primary-color);
}

.product-card .category {
    font-size: 0.8rem;
    color: #666;
    margin: 0.25rem 0;
}

.stock-label {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: var(--danger-color);
    color: white;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-top: 0.5rem;
}

.out-of-stock {
    opacity: 0.7;
    position: relative;
}

.out-of-stock::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
}

.no-results {
    text-align: center;
    grid-column: 1 / -1;
    padding: 2rem;
    color: #666;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal {
    background: white;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.close-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.modal-content {
    padding: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid #eee;
}

.primary-button {
    background: var(--react-color);
    color: #333;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

.secondary-button {
    background: #eee;
    color: #333;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.comparison-table th, .comparison-table td {
    border: 1px solid #ddd;
    padding: 0.5rem;
    text-align: left;
}

.comparison-table th {
    background: var(--light-color);
}

/* Performance comparison */
.performance-comparison {
    margin: 1.5rem 0;
}

.chart-bar {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
}

.chart-bar span {
    width: 120px;
    font-weight: 500;
}

.bar {
    height: 20px;
    background: var(--secondary-color);
    margin-left: 1rem;
}

.vanilla-dom .bar {
    background: var(--accent-color);
    width: 100%;
}

.virtual-dom .bar {
    background: var(--success-color);
    width: 30%;
}

.chart-note {
    font-size: 0.8rem;
    color: #666;
    text-align: right;
    margin-top: 0.5rem;
}

/* Style approaches */
.style-approaches {
    display: grid;
    gap: 1.5rem;
    margin-top: 1rem;
}

.approach {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: var(--border-radius);
}

.approach h4 {
    margin-top: 0;
    color: var(--primary-color);
}

/* [Los estilos existentes para tabs, cards, etc. permanecen iguales] */

/* Responsive adjustments */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    .follow-section {
        justify-content: center;
    }
}


/* Estilos para la sección de reflexión */
.reflection {
    margin: 3rem 0;
}

.reflection-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.reflection-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.reflection-card h3 {
    padding: 1.5rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
    color: white;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.reflection-text {
    padding: 1.5rem;
}

.reflection-text p:first-child {
    margin-top: 0;
}

.reflection-text ul {
    padding-left: 1.5rem;
}

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