/* ==========================================================================
   Variables Globales y Sistema de Diseño
   ========================================================================== */
:root {
    /* Paleta de Colores (Blanco y Gris-Azul) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;     /* Slate 50 - off-white azulado */
    --bg-tertiary: #f1f5f9;      /* Slate 100 - gris-azul claro */
    --bg-accent-light: #eef4fa;  /* Azul-grisáceo suave para destacados */
    
    --text-primary: #1e293b;     /* Slate 800 - azul-gris oscuro */
    --text-secondary: #475569;   /* Slate 600 - gris medio */
    --text-muted: #64748b;       /* Slate 500 - gris claro */
    
    --color-primary: #3b6088;    /* Steel Blue principal */
    --color-primary-rgb: 59, 96, 136;
    --color-primary-hover: #2c4765;
    --color-accent: #5c84b4;     /* Light Steel Blue */
    --color-accent-rgb: 92, 132, 180;
    
    --border-color: #e2e8f0;     /* Slate 200 */
    --border-hover: #cbd5e1;     /* Slate 300 */
    
    --card-bg: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(226, 232, 240, 0.8);
    
    /* Sombras Fina / Suavemente Tintadas en Azul-Gris */
    --shadow-sm: 0 2px 8px rgba(59, 96, 136, 0.04);
    --shadow-md: 0 8px 20px rgba(59, 96, 136, 0.06);
    --shadow-lg: 0 16px 36px rgba(59, 96, 136, 0.08);
    --shadow-inset: inset 0 2px 4px rgba(59, 96, 136, 0.04);

    /* Tipografía */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Transiciones */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Radios */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

/* ==========================================================================
   Reset & Estilos Base
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

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

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

ul, ol {
    list-style: none;
}

/* Scrollbar Personalizado */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ==========================================================================
   Diseño de Contenedor & Utilidades
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3.5rem auto;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 400;
}

/* ==========================================================================
   Botones Premium
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(59, 96, 136, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 96, 136, 0.35);
}

.btn-secondary {
    background-color: var(--bg-accent-light);
    color: var(--color-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1.125rem;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Cabecera y Navbar (Sticky & Glassmorphism)
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 0;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    transition: height var(--transition-normal);
}

.site-header.scrolled .navbar-container {
    height: 64px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon .logo-bg {
    fill: var(--color-primary);
    transition: fill var(--transition-normal);
}

.logo:hover .logo-icon .logo-bg {
    fill: var(--color-primary-hover);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.logo-text span {
    color: var(--color-accent);
}

.logo-text .tld {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Navegación */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.25rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-mobile-cta {
    display: none;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Burger Button */
.burger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    z-index: 1100;
}

.burger-line {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    padding-top: 150px;
    padding-bottom: 100px;
    background-image: radial-gradient(circle at 80% 20%, var(--bg-accent-light) 0%, transparent 60%);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-accent-light);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(59, 96, 136, 0.15);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-primary);
    display: inline-block;
    animation: pulse 1.8s infinite;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.typing-container {
    color: var(--color-primary);
    display: inline-block;
    position: relative;
}

.typing-container .cursor {
    font-weight: 200;
    animation: blink 0.8s infinite;
    color: var(--color-primary);
    margin-left: 2px;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.25rem;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    max-width: 480px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hero Visual (Floating Stack) */
.hero-visual {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-card-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 400px;
}

.floating-card {
    position: absolute;
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 320px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    cursor: pointer;
    z-index: 10;
}

.floating-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-it {
    background-color: var(--bg-accent-light);
    color: var(--color-primary);
}

.color-auto {
    background-color: #f1f5f9;
    color: #475569;
}

.color-hacks {
    background-color: #e2e8f0;
    color: #1e293b;
}

.card-details {
    flex: 1;
}

.card-tag {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    display: inline-block;
}

.tag-it { color: var(--color-primary); }
.tag-auto { color: #475569; }
.tag-hacks { color: #1e293b; }

.card-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.1rem;
}

.card-summary {
    font-size: 0.825rem;
    color: var(--text-secondary);
}

.card-arrow {
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

.floating-card:hover .card-arrow {
    transform: translateX(3px);
    color: var(--color-primary);
}

/* Floating Card Coordinates & Floating Animations */
.card-it {
    top: 50px;
    left: -20px;
    animation: float-slow 7s ease-in-out infinite alternate;
}

.card-auto {
    top: 190px;
    right: -20px;
    animation: float-medium 5s ease-in-out infinite alternate;
}

.card-hacks {
    bottom: 50px;
    left: 20px;
    animation: float-fast 6s ease-in-out infinite alternate;
}

.visual-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 1;
}

.blob-1 {
    width: 250px;
    height: 250px;
    background-color: var(--bg-accent-light);
    top: 40px;
    right: 30px;
}

.blob-2 {
    width: 200px;
    height: 200px;
    background-color: var(--bg-tertiary);
    bottom: 40px;
    left: 10px;
}

/* ==========================================================================
   Sección Artículos & Buscador
   ========================================================================== */
.articles-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.search-filter-container {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 3.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.search-box input {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--text-primary);
    padding: 1rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-inset);
}

.search-box input:focus {
    outline: none;
    background-color: var(--bg-primary);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(92, 132, 180, 0.12), var(--shadow-inset);
}

.search-box input:focus + .search-icon {
    color: var(--color-primary);
}

.clear-search {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--text-muted);
    padding: 0.25rem;
    line-height: 1;
}

.clear-search:hover {
    color: var(--text-primary);
}

/* Categorías Filter Chips */
.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.chip {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.chip:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.chip.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 4px 10px rgba(59, 96, 136, 0.18);
}

/* Grid de Artículos */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    transition: opacity var(--transition-normal);
}

.article-card {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.card-img-holder {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background-color: var(--bg-accent-light);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-svg-visual {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .card-svg-visual {
    transform: scale(1.05);
}

.article-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.badge-it { background-color: var(--bg-accent-light); color: var(--color-primary); }
.badge-auto { background-color: #f1f5f9; color: #475569; }
.badge-hacks { background-color: #e2e8f0; color: #1e293b; }
.badge-tech { background-color: #e8eff6; color: #5c84b4; }

.article-card-body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.825rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.meta-separator {
    color: var(--border-color);
}

.article-card-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.article-card-title a:hover {
    color: var(--color-primary);
}

.article-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: auto;
}

.author-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.btn-like-article {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.btn-like-article:hover {
    color: var(--color-primary);
}

.btn-like-article.liked {
    color: var(--color-primary);
}

.btn-like-article.liked svg {
    fill: var(--bg-accent-light);
}

.btn-like-article:active {
    transform: scale(0.95);
}

/* No Results Element */
.no-results {
    text-align: center;
    padding: 4rem 1rem;
    max-width: 400px;
    margin: 0 auto;
    color: var(--text-secondary);
}

.no-results svg {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.no-results h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.no-results p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Ocultar elementos filtrados */
.article-card.hidden {
    display: none;
}

/* ==========================================================================
   Asistente de Solución Rápida (Widget Interactivo)
   ========================================================================== */
.assistant-section {
    padding: 100px 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.assistant-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 5rem;
    align-items: start;
}

.assistant-selector {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.selector-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    text-align: left;
    transition: all var(--transition-normal);
}

.selector-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.selector-btn.active {
    background-color: var(--bg-accent-light);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.selector-icon {
    font-size: 1.5rem;
}

.selector-text {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.assistant-display {
    position: sticky;
    top: 100px;
}

.display-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.display-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.pulse-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #22c55e; /* Green */
    display: inline-block;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

.display-category {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
}

.display-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.display-intro {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.display-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.step-item {
    display: flex;
    gap: 1.25rem;
    animation: fadeIn var(--transition-normal);
}

.step-num {
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    color: #ffffff;
    border-radius: 50%;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.step-desc strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.display-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.display-meta {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

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

.btn-feedback {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-feedback:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.btn-feedback.active-yes {
    background-color: rgba(34, 197, 94, 0.08);
    border-color: #22c55e;
    color: #15803d;
}

.btn-feedback.active-no {
    background-color: rgba(239, 68, 68, 0.08);
    border-color: #ef4444;
    color: #b91c1c;
}

/* ==========================================================================
   Preguntas Frecuentes (FAQ Accordions)
   ========================================================================== */
.faq-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    text-align: left;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-chevron {
    color: var(--text-muted);
    transition: transform var(--transition-normal);
}

.faq-question[aria-expanded="true"] .faq-chevron {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.975rem;
    line-height: 1.6;
}

/* ==========================================================================
   Sección Newsletter
   ========================================================================== */
.newsletter-section {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.newsletter-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 4rem 3rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.news-blob {
    position: absolute;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    filter: blur(40px);
    pointer-events: none;
}

.blob-a {
    width: 300px;
    height: 300px;
    top: -150px;
    right: -100px;
}

.blob-b {
    width: 200px;
    height: 200px;
    bottom: -100px;
    left: -50px;
}

.newsletter-content {
    position: relative;
    z-index: 10;
    max-width: 650px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.newsletter-content p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    margin-bottom: 2.5rem;
}

.newsletter-form {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form .form-group {
    display: flex;
    gap: 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.newsletter-form .form-group:focus-within {
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
}

.newsletter-form input[type="email"] {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-body);
    font-size: 1rem;
    color: #ffffff;
    padding: 0.75rem 1rem;
}

.newsletter-form input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.newsletter-form .btn {
    background-color: #ffffff;
    color: var(--color-primary);
    box-shadow: none;
}

.newsletter-form .btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--color-primary-hover);
    transform: none;
}

.form-feedback {
    display: block;
    margin-top: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    min-height: 20px;
    transition: opacity var(--transition-fast);
}

.form-feedback.success {
    color: #86efac; /* Light Green */
}

.form-feedback.error {
    color: #fca5a5; /* Light Red */
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 0.8fr 0.8fr 1fr;
    gap: 3.5rem;
    padding-bottom: 4rem;
}

.footer-logo {
    margin-bottom: 1.25rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.6;
    margin-bottom: 1.75rem;
    max-width: 320px;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--bg-accent-light);
    border-color: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.925rem;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--color-primary);
    transform: translateX(4px);
}

/* Status Indicator */
.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #22c55e;
    display: inline-block;
    margin-right: 0.5rem;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.2);
}

.footer-links li {
    display: flex;
    align-items: center;
    font-size: 0.925rem;
    color: var(--text-secondary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    background-color: var(--bg-tertiary);
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-legal-links {
    display: flex;
    gap: 1.5rem;
}

.footer-legal-links a:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   Animaciones Keyframes & Reveal
   ========================================================================== */
@keyframes float-slow {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-15px) rotate(1deg); }
}

@keyframes float-medium {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-18px) rotate(-1.5deg); }
}

@keyframes float-fast {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-12px) rotate(0.5deg); }
}

@keyframes blink {
    50% { opacity: 0; }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(59, 96, 136, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(59, 96, 136, 0); }
    100% { box-shadow: 0 0 0 0 rgba(59, 96, 136, 0); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Intersection Observer Scroll Reveal Classes */
.scroll-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: opacity, transform;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Delay modifiers for scroll reveal */
.scroll-reveal:nth-child(2) { transition-delay: 0.15s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.3s; }

/* ==========================================================================
   Media Queries (Responsive Layouts)
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        margin-left: auto;
        margin-right: auto;
        justify-content: center;
    }
    
    .hero-visual {
        height: 380px;
    }
    
    .visual-card-wrapper {
        max-width: 320px;
    }
    
    .floating-card {
        width: 280px;
        padding: 1rem;
    }
    
    .card-it { top: 20px; left: -10px; }
    .card-auto { top: 130px; right: -10px; }
    .card-hacks { bottom: 20px; left: 10px; }
    
    .assistant-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .assistant-display {
        position: static;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.85rem;
    }
    
    /* Navbar móvil en cortina */
    .burger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-primary);
        box-shadow: -10px 0 30px rgba(59, 96, 136, 0.15);
        padding: 100px 2rem 2rem 2rem;
        flex-direction: column;
        align-items: flex-start;
        justify-content: space-between;
        transition: right var(--transition-normal);
        z-index: 1050;
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.75rem;
        width: 100%;
    }
    
    .nav-link {
        font-size: 1.15rem;
        width: 100%;
    }
    
    .nav-mobile-cta {
        display: block;
        width: 100%;
        margin-top: 2rem;
    }
    
    .nav-mobile-cta .btn {
        width: 100%;
    }
    
    .nav-desktop-cta {
        display: none;
    }
    
    /* Animación del menú hamburguesa */
    .burger.open .burger-line:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .burger.open .burger-line:nth-child(2) {
        opacity: 0;
    }
    
    .burger.open .burger-line:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* Hero */
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-section {
        padding-top: 120px;
        padding-bottom: 60px;
    }
    
    /* Grids */
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
    
    .footer-col-info {
        grid-column: span 2;
    }
    
    .newsletter-card {
        padding: 3rem 1.5rem;
    }
    
    .newsletter-content h2 {
        font-size: 1.75rem;
    }
    
    .newsletter-form .form-group {
        flex-direction: column;
        background-color: transparent;
        border: none;
        padding: 0;
    }
    
    .newsletter-form input[type="email"] {
        background-color: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: var(--radius-md);
        margin-bottom: 0.75rem;
    }
    
    .newsletter-form .btn {
        border-radius: var(--radius-md);
        padding: 0.875rem;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.15rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-num {
        font-size: 1.4rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-col-info {
        grid-column: span 1;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal-links {
        justify-content: center;
    }
    
    .display-card {
        padding: 1.5rem;
    }
    
    .display-title {
        font-size: 1.3rem;
    }
    
    .step-item {
        gap: 0.75rem;
    }
}