/* 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; }




/* Nuevos estilos para ejercicios de laboratorio */
.lab-exercises {
    margin: 3rem 0;
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: var(--border-radius);
}

.exercise {
    margin-bottom: 3rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.exercise h3 {
    padding: 1.5rem;
    margin: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.exercise-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 1.5rem;
}

.exercise-description {
    border-right: 1px solid #eee;
    padding-right: 1.5rem;
}

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

.result-container {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid #eee;
}

/* Estilos para el formulario de demostración */
.demo-form {
    display: grid;
    gap: 1rem;
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: var(--font-main);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.demo-form button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    justify-self: start;
}

.demo-form button:hover {
    background: var(--primary-color);
}

/* Estilos para la demo de Web Storage */
#storage-demo {
    display: grid;
    gap: 1rem;
}

.storage-controls {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
}

.storage-buttons {
    display: flex;
    gap: 0.5rem;
}

#storage-input {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
}

#storage-demo button {
    padding: 0.5rem 1rem;
    background: var(--html-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

#storage-demo button:hover {
    background: var(--html-dark);
}

.storage-output {
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    min-height: 2rem;
}

.storage-hint {
    font-size: 0.85rem;
    color: #666;
    margin: 0;
}

/* 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;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .exercise-content {
        grid-template-columns: 1fr;
    }
    
    .exercise-description {
        border-right: none;
        border-bottom: 1px solid #eee;
        padding-right: 0;
        padding-bottom: 1.5rem;
    }
    
    .storage-controls {
        grid-template-columns: 1fr;
    }
}



/* Variables de color y tipografía - Extendidas */
:root {
    --html-color: #e34c26;
    --html-light: #f06529;
    --html-lighter: #f7a48b;
    --html-dark: #a13316;
    
    --form-color: #3498db;
    --form-light: #5dade2;
    --form-lighter: #aed6f1;
    
    --semantic-color: #2ecc71;
    --semantic-light: #58d68d;
    
    --api-color: #9b59b6;
    --api-light: #bb8fce;
}

/* Estilos específicos para contenido HTML */
.html-basics h2 i {
    color: var(--html-color);
}

.html-advanced h2 i {
    color: var(--html-dark);
}

/* Estilos para ejemplos de código HTML */
.element-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.element-list li {
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    font-family: var(--font-code);
    font-size: 0.9rem;
}

.element-list code {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    color: var(--html-color);
}

/* Estilos para buenas prácticas */
.best-practice {
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: rgba(52, 152, 219, 0.1);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--secondary-color);
}

.best-practice h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.best-practice p {
    margin: 0;
    font-size: 0.85rem;
    color: #555;
}

/* Estilos específicos para secciones */
.tab-content#forms .card {
    border-top-color: var(--form-color);
}

.tab-content#multimedia .card {
    border-top-color: var(--html-light);
}

.tab-content#apis .card {
    border-top-color: var(--api-color);
}

.tab-content#templates .card {
    border-top-color: var(--semantic-color);
}

/* Resumen específico */
.summary-card.key-concepts {
    border-top-color: var(--html-color);
}

.summary-card.tools {
    border-top-color: var(--form-color);
}

.summary-card.next-steps {
    border-top-color: var(--semantic-color);
}

/* Animaciones adicionales */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.card:hover {
    animation: pulse 0.5s ease;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tab-header {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.5rem;
    }
    
    .tab-btn {
        display: inline-block;
        flex: none;
        min-width: 100px;
    }
    
    .code-examples {
        grid-template-columns: 1fr;
    }
}