/* Variables de colores */
:root {
    --color-primario: #4a6cf7;
    --color-secundario: #6b8aff;
    --color-fondo: #f8fafc;
    --color-texto: #1e293b;
    --color-texto-claro: #64748b;
    --color-borde: #e2e8f0;
    --color-blanco: #ffffff;
    --sombra: 0 2px 4px rgba(0, 0, 0, 0.05);
    --sombra-hover: 0 10px 15px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Barra horizontal de sesiones */
.sesiones-bar {
    display: flex;
    background: var(--color-blanco);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 30px;
    box-shadow: var(--sombra);
    overflow-x: auto;
    scrollbar-width: none;
}

.sesiones-bar::-webkit-scrollbar {
    display: none;
}

.sesion-tab {
    padding: 12px 20px;
    transition: all 0.3s ease;
    border-radius: 6px;
    margin-right: 5px;
    white-space: nowrap;
    flex-shrink: 0;
    text-align: center;
    border: 1px solid transparent;
    text-decoration: none;
    color: inherit;
}

.sesion-tab:hover {
    background-color: rgba(74, 108, 247, 0.05);
    text-decoration: none;
    color: inherit;
}

.sesion-tab.active {
    background-color: var(--color-primario);
    color: var(--color-blanco);
    font-weight: 600;
}

.sesion-numero {
    font-size: 1rem;
    font-weight: 600;
}

/* Contenido principal */
.content-header {
    margin-bottom: 30px;
    text-align: center;
}

.content-header h1 {
    color: var(--color-primario);
    font-size: 2rem;
    margin-bottom: 10px;
}

.content-header p {
    color: var(--color-texto-claro);
}

.sesion-content {
    background: var(--color-blanco);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--sombra);
    min-height: 400px;
}

.sesion-content h2 {
    color: var(--color-primario);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-borde);
}

.sesion-content p {
    margin-bottom: 15px;
}

.sesion-content ul, .sesion-content ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

.sesion-content li {
    margin-bottom: 8px;
}

/* Grid de características */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature {
    background: var(--color-fondo);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--color-primario);
}

.feature h3 {
    color: var(--color-primario);
    margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .sesiones-bar {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .sesion-tab {
        margin-bottom: 5px;
    }
    
    .content-header h1 {
        font-size: 1.5rem;
    }
    
    .sesion-content {
        padding: 20px;
    }
}