/* =============================================================================
   VARYS CONSULTING GROUP - ESTILOS PRINCIPALES
   =============================================================================
   Arquitectura CSS:
   1. Variables y Reset
   2. Tipografía Base
   3. Componentes Reutilizables
   4. Navegación
   5. Hero Section
   6. Sección Servicios
   7. Sección Labs
   8. Sección Portafolio
   9. Sección CTA
   10. Footer
   11. Animaciones
   12. Media Queries (Responsive)
   ============================================================================= */

/* =============================================================================
   1. VARIABLES CSS Y RESET
   ============================================================================= */

:root {
    /* Paleta de Colores - Basada en el logo de Varys */
    --color-primary: #00CBA9;           /* Azul cian/turquesa vibrante */
    --color-primary-dark: #00A88A;      /* Versión más oscura para hover */
    --color-primary-light: #33D4BA;     /* Versión más clara */
    
    --color-secondary: #76FF03;         /* Verde menta/lima */
    --color-secondary-dark: #64DD17;    /* Versión más oscura */
    --color-secondary-light: #B2FF59;   /* Versión más clara */
    
    --color-accent: #FFC107;            /* Naranja/amarillo (creatividad) */
    --color-accent-dark: #FFA000;       /* Versión más oscura */
    
    --color-text: #333333;              /* Texto principal */
    --color-text-light: #666666;        /* Texto secundario */
    --color-text-muted: #999999;        /* Texto atenuado */
    
    --color-bg-light: #FFFFFF;          /* Fondo principal */
    --color-bg-alt: #F8F9FA;            /* Fondo alternativo */
    --color-bg-dark: #1A202C;           /* Fondo oscuro (footer) */
    --color-bg-darker: #0F1419;         /* Más oscuro */
    
    /* Tipografía */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;           /* 14px */
    --font-size-md: 1rem;               /* 16px */
    --font-size-lg: 1.125rem;           /* 18px */
    --font-size-xl: 1.25rem;            /* 20px */
    --font-size-2xl: 1.5rem;            /* 24px */
    --font-size-3xl: 2rem;              /* 32px */
    --font-size-4xl: 2.5rem;            /* 40px */
    --font-size-5xl: 3rem;              /* 48px */
    --font-size-6xl: 3.75rem;           /* 60px */
    
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;              /* 4px */
    --spacing-sm: 0.5rem;               /* 8px */
    --spacing-md: 1rem;                 /* 16px */
    --spacing-lg: 1.5rem;               /* 24px */
    --spacing-xl: 2rem;                 /* 32px */
    --spacing-2xl: 3rem;                /* 48px */
    --spacing-3xl: 4rem;                /* 64px */
    --spacing-4xl: 6rem;                /* 96px */
    --spacing-5xl: 8rem;                /* 128px */
    
    /* Bordes */
    --border-radius-sm: 0.375rem;       /* 6px */
    --border-radius-md: 0.5rem;         /* 8px */
    --border-radius-lg: 0.75rem;        /* 12px */
    --border-radius-xl: 1rem;           /* 16px */
    --border-radius-2xl: 1.5rem;        /* 24px */
    --border-radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow-primary: 0 0 40px rgba(0, 203, 169, 0.3);
    --shadow-glow-secondary: 0 0 40px rgba(118, 255, 3, 0.2);
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
    
    /* Contenedor */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
}

/* Reset y estilos base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg-light);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

/* =============================================================================
   2. TIPOGRAFÍA BASE
   ============================================================================= */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* Texto destacado */
.highlight {
    color: var(--color-primary);
    position: relative;
}

.highlight--secondary {
    color: var(--color-secondary);
}

/* =============================================================================
   3. COMPONENTES REUTILIZABLES
   ============================================================================= */

/* Contenedor */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-glow-primary);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow-primary);
}

.btn--secondary {
    background: white;
    color: var(--color-primary);
    border: 2px solid transparent;
    box-shadow: var(--shadow-md);
}

.btn--secondary:hover {
    background: var(--color-bg-alt);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn__icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.btn:hover .btn__icon {
    transform: translateX(4px);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    background: rgba(0, 203, 169, 0.1);
    border-radius: var(--border-radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-tag--light {
    color: var(--color-secondary);
    background: rgba(118, 255, 3, 0.15);
}

.section-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.section-title--light {
    color: white;
}

/* =============================================================================
   4. NAVEGACIÓN
   ============================================================================= */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.navbar--scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.navbar__logo {
    display: flex;
    align-items: center;
}

.navbar__logo-img {
    height: 50px;
    width: auto;
}

.navbar__nav {
    display: flex;
    align-items: center;
}

.navbar__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.navbar__link {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width var(--transition-normal);
}

.navbar__link:hover,
.navbar__link.active {
    color: var(--color-primary);
}

.navbar__link:hover::after,
.navbar__link.active::after {
    width: 100%;
}

.navbar__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.navbar__lang {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.lang-btn {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--color-primary);
    background: rgba(0, 203, 169, 0.1);
}

.lang-divider {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Hamburger Menu */
.navbar__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    cursor: pointer;
}

.navbar__hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.navbar__hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.active span:nth-child(2) {
    opacity: 0;
}

.navbar__hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================================================
   5. HERO SECTION
   ============================================================================= */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: var(--color-bg-light);
    overflow: hidden;
}

.hero__bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0.6;
}

.hero__nodes {
    width: 100%;
    height: 100%;
}

.node-circle {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 1;
    opacity: 0.2;
}

.node-circle--lg {
    animation: pulse 4s ease-in-out infinite;
}

.node-circle--md {
    stroke: var(--color-secondary);
    animation: pulse 4s ease-in-out infinite 0.5s;
}

.node-circle--sm {
    stroke: var(--color-primary);
    animation: pulse 4s ease-in-out infinite 1s;
}

.node-line {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 1;
    opacity: 0.3;
}

.node-line--dashed {
    stroke-dasharray: 8 4;
    stroke: var(--color-secondary);
    animation: dash 20s linear infinite;
}

.node-dot {
    fill: var(--color-primary);
    opacity: 0.8;
}

.node-dot--accent {
    fill: var(--color-accent);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 600px;
}

.hero__title {
    font-size: clamp(2.5rem, 5vw, var(--font-size-5xl));
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero__content .btn {
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* Hero Visual - Gráfica geométrica animada */
.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out 0.3s both;
}

.hero__graphic {
    position: relative;
    width: 400px;
    height: 400px;
}

.graphic-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
}

.graphic-circle--outer {
    width: 100%;
    height: 100%;
    border-color: rgba(0, 203, 169, 0.2);
    animation: rotate 20s linear infinite;
}

.graphic-circle--middle {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-color: rgba(118, 255, 3, 0.3);
    background: linear-gradient(135deg, rgba(0, 203, 169, 0.05), rgba(118, 255, 3, 0.05));
    animation: rotate 15s linear infinite reverse;
}

.graphic-circle--inner {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(0, 203, 169, 0.1), rgba(118, 255, 3, 0.1));
    animation: pulse 3s ease-in-out infinite;
}

.graphic-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--color-primary);
}

.graphic-dot--1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation: float 3s ease-in-out infinite;
}

.graphic-dot--2 {
    bottom: 15%;
    right: 10%;
    background: var(--color-secondary);
    box-shadow: 0 0 20px var(--color-secondary);
    animation: float 3s ease-in-out infinite 0.5s;
}

.graphic-dot--3 {
    bottom: 20%;
    left: 5%;
    background: var(--color-accent);
    box-shadow: 0 0 20px var(--color-accent);
    animation: float 3s ease-in-out infinite 1s;
}

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: fadeIn 1s ease-out 1s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollBounce 2s ease-in-out infinite;
}

/* =============================================================================
   6. SECCIÓN SERVICIOS
   ============================================================================= */

.services {
    position: relative;
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-alt);
    overflow: hidden;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

/* Service Cards */
.service-card {
    background: white;
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    position: relative;
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-card--featured {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
}

.service-card--featured .service-card__title,
.service-card--featured .service-card__description {
    color: white;
}

.service-card--featured .service-card__icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.service-card--featured .service-card__list li::before {
    background: var(--color-secondary);
}

.service-card--featured .service-card__link {
    color: white;
}

.service-card--featured:hover {
    box-shadow: var(--shadow-2xl), var(--shadow-glow-primary);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 203, 169, 0.1);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.service-card__icon svg {
    width: 32px;
    height: 32px;
}

.service-card__icon--secondary {
    background: rgba(118, 255, 3, 0.1);
    color: var(--color-secondary-dark);
}

.service-card__icon--accent {
    background: rgba(255, 193, 7, 0.1);
    color: var(--color-accent-dark);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.service-card__description {
    font-size: var(--font-size-md);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
}

.service-card__list {
    margin-bottom: var(--spacing-lg);
}

.service-card__list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.service-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    transition: gap var(--transition-fast);
}

.service-card__link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.service-card__link:hover {
    gap: var(--spacing-md);
}

.service-card__link:hover svg {
    transform: translateX(4px);
}

/* Services decoration */
.services__decoration {
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    color: var(--color-primary);
    opacity: 0.1;
    pointer-events: none;
}

.decoration-circle {
    animation: rotate 30s linear infinite;
}

/* =============================================================================
   7. SECCIÓN LABS
   ============================================================================= */

.labs {
    position: relative;
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-dark);
    overflow: hidden;
}

.labs__pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 203, 169, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 255, 3, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.labs__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

/* Lab Cards */
.lab-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-normal);
}

.lab-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-secondary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-secondary);
}

.lab-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.lab-card__badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
    background: rgba(118, 255, 3, 0.15);
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.lab-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
}

.lab-card__icon svg {
    width: 100%;
    height: 100%;
}

.lab-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: white;
    margin-bottom: var(--spacing-md);
}

.lab-card__description {
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.lab-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
    transition: gap var(--transition-fast);
}

.lab-card__link svg {
    width: 16px;
    height: 16px;
}

.lab-card__link:hover {
    gap: var(--spacing-md);
}

/* =============================================================================
   8. SECCIÓN PORTAFOLIO
   ============================================================================= */

.portfolio {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-light);
}

.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.portfolio-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-alt);
    border-radius: var(--border-radius-lg);
    border: 1px solid transparent;
    text-align: center;
    transition: all var(--transition-normal);
    min-height: 120px;
}

.portfolio-item:hover {
    background: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.portfolio-item--no-link {
    cursor: default;
}

.portfolio-item--no-link:hover {
    transform: none;
    border-color: transparent;
    box-shadow: none;
}

.portfolio-item__name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.portfolio-item__url {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.portfolio-item:hover .portfolio-item__url {
    color: var(--color-primary);
}

/* =============================================================================
   9. SECCIÓN CTA
   ============================================================================= */

.cta {
    position: relative;
    padding: var(--spacing-5xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, #008B74 100%);
    overflow: hidden;
}

.cta__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.cta__pattern {
    width: 100%;
    height: 100%;
}

.cta__circle {
    fill: rgba(255, 255, 255, 0.05);
}

.cta__container {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta__title {
    font-size: clamp(2rem, 4vw, var(--font-size-4xl));
    font-weight: var(--font-weight-bold);
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta__text {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

/* =============================================================================
   10. FOOTER
   ============================================================================= */

.footer {
    background: var(--color-bg-dark);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer__main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand {
    max-width: 300px;
}

.footer__logo {
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.footer__logo-img {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer__tagline {
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
}

.footer__social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    color: white;
    transition: all var(--transition-fast);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.footer__heading {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: white;
    margin-bottom: var(--spacing-lg);
}

.footer__menu li {
    margin-bottom: var(--spacing-sm);
}

.footer__menu a {
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer__menu a:hover {
    color: var(--color-primary);
}

.footer__contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.7);
}

.footer__contact-list svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer__contact-list a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer__legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer__legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: var(--color-primary);
}

/* =============================================================================
   11. ANIMACIONES
   ============================================================================= */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes dash {
    to {
        stroke-dashoffset: -100;
    }
}

@keyframes scrollBounce {
    0%, 100% {
        transform: scaleY(1);
        opacity: 1;
    }
    50% {
        transform: scaleY(1.3);
        opacity: 0.5;
    }
}

/* =============================================================================
   12. MEDIA QUERIES (RESPONSIVE)
   ============================================================================= */

/* Tablet grande / Desktop pequeño */
@media (max-width: 1024px) {
    :root {
        --container-padding: 2rem;
    }
    
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__content {
        max-width: 700px;
        margin: 0 auto;
    }
    
    .hero__visual {
        display: none;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .labs__grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .portfolio__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__main {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2xl);
    }
}

/* Tablet */
@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --spacing-5xl: 5rem;
        --spacing-4xl: 4rem;
    }
    
    /* Navegación móvil */
    .navbar__nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .navbar__nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .navbar__menu {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .navbar__link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md);
        display: block;
        text-align: center;
    }
    
    .navbar__hamburger {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 var(--spacing-4xl);
    }
    
    .hero__scroll {
        display: none;
    }
    
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
    
    .portfolio__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__main {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .footer__brand {
        max-width: none;
        text-align: center;
    }
    
    .footer__social {
        justify-content: center;
    }
    
    .footer__links,
    .footer__contact {
        text-align: center;
    }
    
    .footer__contact-list li {
        justify-content: center;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* Móvil */
@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-5xl: 4rem;
        --spacing-4xl: 3rem;
        --spacing-3xl: 2.5rem;
    }
    
    .navbar__container {
        height: 70px;
    }
    
    .navbar__logo-img {
        height: 40px;
    }
    
    .navbar__lang {
        display: none;
    }
    
    .btn--lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-md);
    }
    
    .service-card {
        padding: var(--spacing-xl);
    }
    
    .lab-card {
        padding: var(--spacing-xl);
    }
    
    .portfolio-item {
        padding: var(--spacing-lg);
        min-height: 100px;
    }
    
    .cta__title {
        font-size: var(--font-size-2xl);
    }
}

/* Preferencia de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Dark mode (opcional, basado en preferencia del sistema) */
@media (prefers-color-scheme: dark) {
    /* Descomentar si se desea activar modo oscuro automático */
    /*
    :root {
        --color-bg-light: #0F1419;
        --color-bg-alt: #1A202C;
        --color-text: #F8F9FA;
        --color-text-light: #A0AEC0;
    }
    */
}