/* ================= HEADER STYLES (idéntico a pildora04.css) ================= */

.nav-header {
    background-color: #0a0a0a;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #333;
}

.logo {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.world {
    color: white;
}

.reactive {
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.back-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

.back-button:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.5s ease;
}

.back-button:hover {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 5px 15px rgba(156, 39, 176, 0.4);
}

.back-button:hover:before {
    transform: scale(1.5);
    opacity: 0;
}

.back-button i {
    position: relative;
    z-index: 2;
}

/* ================= CONTENIDO DE LA PÍLDORA ================= */

body {
    font-family: var(--font-primary), Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--color-background) !important;
    color: var(--color-text-primary);
}

.pildora {
    max-width: 900px;
    margin: var(--spacing-md) auto;
    background-color: var(--color-card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.pildora-title {
    font-family: var(--font-secondary);
    font-size: 2em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.pildora-subtitle {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.2em;
}

.lib-section {
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-dark-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-surface);
}

.lib-section h2 {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-dark-light);
    padding-bottom: var(--spacing-xs);
    margin-top: 0;
    font-family: var(--font-secondary);
}

.lib-section h2 i {
    margin-right: var(--spacing-xs);
    color: var(--color-accent);
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.type-card {
    background: var(--color-card-bg);
    border-left: 3px solid var(--color-accent);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.type-card h3 {
    margin-top: 0;
    color: var(--color-accent);
    font-family: var(--font-secondary);
    font-size: 1.1em;
}

.type-card p {
    font-size: 0.9em;
    color: var(--color-text-secondary);
}

.type-card pre, .lib-section pre {
    background: var(--color-background);
    color: var(--color-text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.85em;
    overflow-x: auto;
    border: 1px solid var(--color-dark-light);
    margin-top: var(--spacing-sm);
}

.conclusion-box {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
    margin-top: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
}

.conclusion-box h3 {
    margin-top: 0;
    color: var(--color-primary);
    font-family: var(--font-secondary);
}

footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--color-text-secondary);
    background: var(--color-dark-light);
    margin-top: var(--spacing-lg);
}

/* ================= VARIABLES :root ================= */

:root {
    /* Colores */
    --color-primary: #9c27b0; /* Violeta/Fucsia */
    --color-secondary: #2196f3; /* Azul Cyber */
    --color-accent: #00bcd4; /* Cyan */
    --color-background: #121212; /* Fondo oscuro principal */
    --color-surface: #1e1e1e; /* Superficies sobre el fondo */
    --color-card-bg: #2a2a2a; /* Fondo para tarjetas o secciones */
    --color-dark-light: #333333; /* Un gris un poco más claro */

    --color-text-primary: #e0e0e0; /* Texto principal sobre fondo oscuro */
    --color-text-secondary: #b0b0b0; /* Texto secundario o menos importante */
    --color-text-on-primary: #ffffff; /* Texto sobre color primario */
    --color-text-on-secondary: #000000; /* Texto sobre color secundario */

    /* Fuentes */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Montserrat', sans-serif; /* Para títulos o logos (igual que en 004) */

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Animation */
    --transition-speed: 0.3s;
}
    box-shadow: 0 2px 5px rgba(0,0,0,0.3); 
}
.pildora-title { 
    font-family: var(--font-secondary);
    font-size: 2em; 
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}
.pildora-subtitle { 
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.2em; 
}

/* Nuevos estilos para tipos de reactividad */
.lib-section { 
    margin-bottom: var(--spacing-lg); /* Usando variable */
    border: 1px solid var(--color-dark-light); /* Usando variable */
    padding: var(--spacing-md); /* Usando variable */
    border-radius: var(--border-radius-sm); /* Usando variable */
    background-color: var(--color-surface); /* Fondo ligero */
}
.lib-section h2 { 
    color: var(--color-primary); /* Usando variable */
    border-bottom: 2px solid var(--color-dark-light); /* Usando variable */
    padding-bottom: var(--spacing-xs); /* Usando variable */
    margin-top: 0; 
    font-family: var(--font-secondary);
}
.lib-section h2 i { 
    margin-right: var(--spacing-xs); /* Usando variable */
    color: var(--color-accent); /* Usando variable */
}

.types-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); 
    gap: var(--spacing-md); /* Usando variable */
    margin-top: var(--spacing-md); /* Usando variable */
}

.type-card { 
    background: var(--color-card-bg); /* Usando variable */
    border-left: 3px solid var(--color-accent); /* Usando variable */
    padding: var(--spacing-sm); /* Usando variable */
    border-radius: var(--border-radius-sm); /* Usando variable */
}
.type-card h3 { 
    margin-top: 0; 
    color: var(--color-accent); /* Usando variable */
    font-family: var(--font-secondary);
    font-size: 1.1em;
}
.type-card p { 
    font-size: 0.9em; 
    color: var(--color-text-secondary);
}
.type-card pre, .lib-section pre { 
    background: var(--color-background); /* Fondo más oscuro para código */
    color: var(--color-text-primary);
    padding: var(--spacing-sm); /* Usando variable */
    border-radius: var(--border-radius-sm); /* Usando variable */
    font-size: 0.85em; 
    overflow-x: auto; 
    border: 1px solid var(--color-dark-light);
    margin-top: var(--spacing-sm);
}

.conclusion-box { 
    background: var(--color-surface); /* Usando variable */
    padding: var(--spacing-md); /* Usando variable */
    border-left: 4px solid var(--color-primary); /* Usando variable primaria */
    margin-top: var(--spacing-lg); /* Usando variable */
    border-radius: var(--border-radius-sm);
}
.conclusion-box h3 { 
    margin-top: 0; 
    color: var(--color-primary); /* Usando variable primaria */
    font-family: var(--font-secondary);
}
footer { 
    text-align: center; 
    padding: var(--spacing-md); /* Usando variable */
    color: var(--color-text-secondary); 
    background: var(--color-dark-light); 
    margin-top: var(--spacing-lg); 
}