/* ======================================
   VARIABLES GLOBALES (ROOT)
   ====================================== */
   :root {
    /* Colores principales según guía de branding */
    --color-primary: #9c27b0; /* Violeta/Fucsia */
    --color-secondary: #2196f3; /* Azul Cyber */
    --color-accent: #00bcd4; /* Cyan */
    
    /* Fondos */
    --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 */
    
    /* Textos */
    --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: 'Orbitron', sans-serif;
    
    /* 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;
    
    /* Animación */
    --transition-speed: 0.3s;
  }
  
  /* ======================================
     ESTILOS BASE
     ====================================== */
  body {
    font-family: var(--font-primary);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.5;
  }
  
  /* ======================================
     CABECERA Y LOGO
     ====================================== */
  .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: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  
  .world {
    color: white;
  }
  
  .reactive {
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  
  /* ======================================
     BOTÓN VOLVER
     ====================================== */
  .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;
  }
  
  /* ======================================
     CONTAINER PRINCIPAL
     ====================================== */
  .pildora {
    max-width: 1100px;
    margin: var(--spacing-md) auto;
    padding: 0 var(--spacing-md);
  }
  
  /* ======================================
     TIPOGRAFÍA DE TÍTULOS - ESTILO TRICOLOR
     ====================================== */
  .pildora-title {
    font-family: var(--font-secondary);
    font-size: 2.5em;
    font-weight: 900;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    line-height: 1.2;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-md);
  }
  
  .title-first-part {
    color: #ffffff; /* Primera parte en blanco */
  }
  
  .title-second-part {
    color: var(--color-primary); /* Segunda parte en violeta */
  }
  
  .title-third-part {
    color: var(--color-secondary); /* Tercera parte en azul */
  }
  
  .pildora-subtitle {
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 1.2em;
  }
  
  /* ======================================
     SECCIONES Y TÍTULOS
     ====================================== */
  .section-title-container {
    width: 100%;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: 10px;
  }
  
  .section-title-container::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary), transparent);
  }
  
  .section-title {
    font-family: var(--font-secondary);
    font-size: 1.8em;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    margin: 0;
    padding: 0;
    text-align: left;
  }
  
  /* ======================================
     CONTENEDORES PRINCIPALES
     ====================================== */
  .pildora-content {
    line-height: 1.6;
  }
  
  .full-width-content {
    width: 100%;
    margin-bottom: var(--spacing-lg);
  }
  
  .section-content {
    background: rgba(24, 29, 34, 0.92);
    border: 2px solid #333;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
  }
  
  .section-content:hover {
    border-color: var(--color-accent);
    box-shadow: 0 6px 20px rgba(0, 188, 212, 0.2);
  }
  
  /* ======================================
     ELEMENTOS DE INFORMACIÓN CON ICONOS
     ====================================== */
  .info-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .icon-circle {
    min-width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  }
  
  .info-item p {
    margin: 0;
    flex: 1;
    font-size: 1.05em;
  }
  
  /* ======================================
     LISTA DE CARACTERÍSTICAS
     ====================================== */
  .feature-list-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
  }
  
  .feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .feature-text {
    flex: 1;
  }
  
  .feature-text strong {
    color: var(--color-accent);
  }
  
  /* ======================================
     EJEMPLOS Y TARJETAS
     ====================================== */
  .examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }
  
  .example-card {
    background: #181d22;
    border: 1.5px solid var(--color-accent);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    height: 100%;
    box-sizing: border-box;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .example-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 188, 212, 0.25);
  }
  
  .example-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
  }
  
  .example-header strong {
    color: var(--color-accent);
    font-size: 1.2em;
  }
  
  .code-example {
    background: var(--color-background);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    overflow-x: auto;
    font-family: monospace;
    font-size: 0.95em;
    border: 1px solid var(--color-dark-light);
    margin-top: var(--spacing-sm);
  }
  
  /* ======================================
     CONCLUSIÓN
     ====================================== */
  .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);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  }
  
  .conclusion-box h3 {
    margin-top: 0;
    color: var(--color-primary);
    font-family: var(--font-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  /* ======================================
     FOOTER
     ====================================== */
  footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--color-text-secondary);
    background: var(--color-dark-light);
    margin-top: var(--spacing-lg);
  }
  
  /* ======================================
     RESPONSIVE
     ====================================== */
  @media (max-width: 768px) {
    .pildora {
      padding: 0 var(--spacing-sm);
    }
    
    .pildora-title {
      font-size: 2em;
    }
    
    .section-title {
      font-size: 1.5em;
    }
    
    .feature-list-container {
      grid-template-columns: 1fr;
    }
    
    .examples-grid {
      grid-template-columns: 1fr;
    }
    
    .info-item {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--spacing-sm);
    }
    
    .info-item .icon-circle {
      margin-bottom: var(--spacing-xs);
    }
  }
  
  @media (max-width: 480px) {
    .nav-header {
      padding: 10px 15px;
    }
    
    .logo {
      font-size: 20px;
    }
    
    .pildora-title {
      font-size: 1.6em;
      letter-spacing: 0.06em;
    }
    
    .section-title {
      font-size: 1.3em;
    }
    
    .section-content,
    .example-card {
      padding: var(--spacing-sm);
    }
  }