/* ==========================================================================
   1. RESET (reset.css)
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}
* {
    margin: 0;
    padding: 0;
}
html:focus-within {
    scroll-behavior: smooth;
}
body {
    min-height: 100vh;
    text-rendering: optimizeSpeed;
    line-height: 1.5;
}
img, picture, svg {
    max-width: 100%;
    display: block;
}
input, button, textarea, select {
    font: inherit;
}
@media (prefers-reduced-motion: reduce) {
    html:focus-within { scroll-behavior: auto; }
}

/* ==========================================================================
   2. VARIABLES (variables.css)
   ========================================================================== */
:root {
    /* Paleta de Colores Oscura */
    --bg-main: #020617;         /* slate-950 */
    --bg-surface: #0f172a;      /* slate-900 */
    --bg-surface-light: #1e293b;/* slate-800 */
    --accent-blue: #2563eb;     /* blue-600 */
    --accent-blue-hover: #3b82f6;/* blue-500 */
    --accent-green: #16a34a;    /* green-600 para WhatsApp */
    
    /* Tipografía y Texto */
    --text-main: #f8fafc;       /* slate-50 */
    --text-secondary: #94a3b8;  /* slate-400 */
    --font-family: 'Inter', system-ui, sans-serif;
    
    /* Espaciado Modular */
    --container-max: 1280px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 6rem;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.7s ease-out;
}

/* ==========================================================================
   3. LAYOUT (layout.css)
   ========================================================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}
.section {
    padding: var(--spacing-xl) 0;
}
.section-header {
    text-align: center;
    max-width: 768px;
    margin: 0 auto var(--spacing-lg) auto;
}
.section-header h1,
.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-main);
    letter-spacing: -0.025em;
}
.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}
.bg-surface {
    background-color: rgba(15, 23, 42, 0.5); /* slate-900 con opacidad */
    border-top: 1px solid var(--bg-surface-light);
    border-bottom: 1px solid var(--bg-surface-light);
}
.grid {
    display: grid !important;
    gap: var(--spacing-lg);
}
.align-center {
    align-items: center;
}
@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .section { padding: var(--spacing-xl) 0; }
}

/* ==========================================================================
   4. COMPONENTS (components.css)
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.btn-primary {
    background-color: var(--accent-blue);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.2);
}
.btn-primary:hover {
    background-color: var(--accent-blue-hover);
}
.btn-secondary {
    background-color: var(--bg-surface-light);
    color: var(--text-main);
    border: 1px solid transparent;
}
.btn-secondary:hover {
    background-color: #334155; /* slate-700 */
}
.btn-whatsapp {
    background-color: var(--accent-green);
    color: #ffffff;
    border: 1px solid transparent;
    box-shadow: 0 10px 15px -3px rgba(22, 163, 74, 0.2);
}
.btn-whatsapp:hover {
    background-color: #15803d;
}
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--bg-surface-light);
    border-radius: 1rem;
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}
.card:hover {
    border-color: var(--accent-blue-hover);
    box-shadow: 0 10px 30px -10px rgba(37, 99, 235, 0.1);
}
.card-icon {
    width: 3rem;
    height: 3rem;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue-hover);
    margin-bottom: var(--spacing-md);
}
.process-timeline {
    display: grid !important;
    gap: var(--spacing-md);
}
@media (min-width: 768px) {
    .process-timeline { grid-template-columns: repeat(4, 1fr); }
}
.process-step {
    padding: var(--spacing-md);
    border-left: 2px solid var(--bg-surface-light);
}
@media (min-width: 768px) {
    .process-step {
        border-left: none;
        border-top: 2px solid var(--bg-surface-light);
    }
}
.step-number {
    width: 3rem;
    height: 3rem;
    background-color: var(--bg-surface);
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.05rem;
    cursor: pointer;
    text-align: left;
}
.faq-question svg {
    transition: transform var(--transition-normal);
}
.faq-question[aria-expanded="true"] svg {
    transform: rotate(180deg);
}
.faq-item {
    background-color: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--bg-surface-light);
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    padding: 0 var(--spacing-md);
}
.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-normal);
}
.faq-question[aria-expanded="true"] + .faq-answer {
    grid-template-rows: 1fr;
}
.faq-answer p {
    min-height: 0;
    overflow: hidden;
    color: var(--text-secondary);
    margin: 0;
    padding-bottom: 0;
    line-height: 1.6;
    transition: padding-bottom var(--transition-normal);
}
.faq-question[aria-expanded="true"] + .faq-answer p {
    padding-bottom: var(--spacing-md);
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--bg-surface-light);
    border-radius: 0.5rem;
    color: var(--text-main);
}

/* Tarjetas de Proyectos Destacados */
.project-card {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.project-image {
    width: 100%;
    aspect-ratio: 5 / 3;
    overflow: hidden;
    border-radius: 4px;
}
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}
.tag {
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-blue-hover);
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    color: var(--accent-blue-hover);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

/* Hero Section */
.hero {
    position: relative;
    overflow: hidden;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding-top: 7rem;
    padding-bottom: 6rem;
}

.hero-title {
    font-size: clamp(2.25rem, 5vw + 1rem, 3.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
    font-weight: 700;
}

.hero-description {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: clamp(1.05rem, 2vw + 0.5rem, 1.25rem);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding-top: 7rem;
        padding-bottom: 4rem;
    }
    .hero-description {
        margin-bottom: 2rem;
    }
    .scroll-indicator {
        display: none !important;
    }
}

/* Estilos personalizados para la barra de desplazamiento (Scrollbar) */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--bg-surface-light) var(--bg-main);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-surface-light);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue-hover);
}

/* Estilos de la Galería Fotográfica */
.gallery-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (min-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}
.gallery-item {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 1rem;
    width: 100%;
    cursor: pointer;
    position: relative;
    border: 1px solid var(--bg-surface-light);
    background-color: var(--bg-surface);
}
.gallery-item img {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}
.gallery-item:hover img {
    transform: scale(1.05);
}

/* Estilos del Modal (Lightbox) */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 6, 23, 0.95);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}
.lightbox.active {
    opacity: 1;
    pointer-events: all;
}
.lightbox-content {
    position: relative;
    max-width: 100vw;
    max-height: 100vh;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 0.5rem;
    object-fit: contain;
    user-select: none;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 10;
    transition: background 0.2s;
}
.lightbox-close:hover {
    background: var(--accent-blue);
}
.lightbox-prev, .lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
    z-index: 10;
}
.lightbox-prev:hover, .lightbox-next:hover {
    background: var(--accent-blue);
}
.lightbox-prev { left: 2rem; }
.lightbox-next { right: 2rem; }
@media (max-width: 768px) {
    .lightbox-prev, .lightbox-next {
        width: 2.5rem;
        height: 2.5rem;
    }
    .lightbox-close {
        top: 1rem;
        right: 1rem;
    }
    .lightbox-prev { left: 1rem; }
    .lightbox-next { right: 1rem; }
}

/* Animación para el menú móvil y botón hamburguesa */
.hamburger {
    display: inline-block;
    transition: transform 0.3s ease;
}

@keyframes mobileMenuFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .nav-links.active {
        animation: mobileMenuFadeIn 0.3s ease forwards;
        transform-origin: top center;
    }
}

/* ==========================================================================
   5. MAIN (main.css)
   ========================================================================== */
body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-family);
}
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    padding: var(--spacing-md) 0;
    transition: background-color var(--transition-normal), padding var(--transition-normal);
}
.navbar.scrolled {
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--bg-surface-light);
    padding: var(--spacing-sm) 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.menu-toggle {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    display: block;
    margin-right: 1rem;
}
.nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    padding: var(--spacing-lg) var(--spacing-md);
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--bg-surface-light);
}
.nav-links.active {
    display: flex;
}
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
    .nav-links {
        display: flex;
        flex-direction: row;
        align-items: center;
        position: static;
        width: auto;
        background-color: transparent;
        padding: 0;
        border-bottom: none;
        gap: var(--spacing-lg);
    }
}
.nav-links a:not(.btn) {
    color: var(--text-main);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.nav-links a:not(.btn):hover {
    color: var(--accent-blue-hover);
}
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}
.fade-up.visible, .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Utilidades estéticas */
.text-gradient {
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    background-image: linear-gradient(to right, #60a5fa, #2563eb);
}
.text-transparent { color: transparent; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.w-full { width: 100%; }

/* Animaciones TechVisual */
.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.animate-float {
    animation: float 6s ease-in-out infinite;
}
.animate-bounce {
    animation: bounce 2.5s infinite ease-in-out;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* Composición Visual */
.tech-visual {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--bg-surface-light);
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.tech-header {
    height: 2.5rem;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--bg-surface-light);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 0.5rem;
}

/* ==========================================================================
   MEJORAS DE ANIMACIÓN Y EXPERIENCIA VISUAL
   ========================================================================== */

/* Prevenir que los contenedores padre oculten los hijos para permitir animarlos de a uno */
.grid.fade-up,
.gallery-grid.fade-up,
.process-timeline.fade-up,
#servicios .fade-up,
.fade-up:has(.card),
.fade-up:has(.project-card),
.fade-up:has(.faq-item) {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

/* --- HERO SECTION --- */
/* Movimiento sutil de fondo */
.hero > div:first-child {
    animation: subtlePan 20s ease-in-out infinite alternate;
    will-change: transform;
}
@keyframes subtlePan {
    0% { transform: scale(1.2) translate(-2%, -2%); }
    100% { transform: scale(1.2) translate(2%, 2%); }
}
/* Staggered Content */
.hero-content > * {
    opacity: 0;
    transform: translateY(20px);
}
.hero-content.visible > * {
    animation: fadeUpStagger 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-content.visible > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content.visible > *:nth-child(2) { animation-delay: 0.25s; }
.hero-content.visible > *:nth-child(3) { animation-delay: 0.4s; }
.hero-content.visible > *:nth-child(4) { animation-delay: 0.55s; }
@keyframes fadeUpStagger {
    to { opacity: 1; transform: translateY(0); }
}

/* --- 1. BENEFICIOS (Reveal Mask) --- */
#beneficios .card {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    transform-origin: top center;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s), 
                opacity 0.8s ease var(--stagger-delay, 0s), 
                box-shadow 0.3s ease, border-color 0.3s ease;
}
#beneficios .card.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* --- 2. SERVICIOS (Alternancia L/R y Microinteracciones) --- */
#servicios .card {
    opacity: 0;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s), 
                opacity 0.8s ease var(--stagger-delay, 0s), 
                box-shadow 0.3s ease, border-color 0.3s ease;
}
#servicios .card:nth-child(odd) { transform: translateX(-40px); }
#servicios .card:nth-child(even) { transform: translateX(40px); }
#servicios .card.visible {
    opacity: 1;
    transform: translateX(0);
}
#servicios .card:hover { transform: translateY(-5px) scale(1.02); }
/* Animación del Ícono */
#servicios .card .card-icon {
    transform: scale(0.5) rotate(-15deg);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
#servicios .card.visible .card-icon {
    transform: scale(1) rotate(0);
    opacity: 1;
    transition-delay: calc(var(--stagger-delay, 0s) + 0.2s);
}

/* --- 3. PROCESO (Secuencial y Línea de Progreso) --- */
.process-step {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out var(--stagger-delay, 0s), 
                transform 0.6s ease-out var(--stagger-delay, 0s), 
                border-color 0.8s ease calc(var(--stagger-delay, 0s) + 0.3s);
}
.process-step.visible {
    opacity: 1;
    transform: translateY(0);
}
@media (min-width: 768px) {
    .process-step { border-top-color: transparent !important; }
    .process-step.visible { border-top-color: var(--accent-blue) !important; }
}

/* --- 4. PORTFOLIO / PROYECTOS (Soft Zoom) --- */
.project-card {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.8s ease var(--stagger-delay, 0s), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s), 
                box-shadow 0.3s ease, border-color 0.3s ease;
}
.project-card.visible {
    opacity: 1;
    transform: scale(1);
}
.project-card:hover {
    transform: translateY(-8px) scale(1.02) !important;
    box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.15);
}
.project-card .project-image img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.project-card:hover .project-image img { transform: scale(1.08); }

/* --- 5. DIFERENCIAL (Innovación) --- */
#diferencial .card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease var(--stagger-delay, 0s), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s), 
                box-shadow 0.3s ease, border-color 0.3s ease;
}
#diferencial .card.visible { opacity: 1; transform: translateY(0); }

/* --- 6. GALERÍA FOTOGRÁFICA (Masonry Reveal) --- */
.gallery-item {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
    transition: opacity 0.8s ease var(--stagger-delay, 0s), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s);
}
.gallery-item.visible { opacity: 1; transform: scale(1) translateY(0); }

/* --- 7. FAQ --- */
.faq-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s ease var(--stagger-delay, 0s), 
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) var(--stagger-delay, 0s);
}
.faq-item.visible { opacity: 1; transform: translateX(0); }

/* --- 8. CTA FINAL (Contacto) --- */
#contacto {
    opacity: 0;
    transform: scale(0.98);
    transition: opacity 1s ease, transform 1s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 1s ease;
}
#contacto.visible {
    opacity: 1;
    transform: scale(1);
    box-shadow: inset 0 0 80px rgba(255, 255, 255, 0.2), 0 20px 40px -10px rgba(37, 99, 235, 0.4);
}
#contacto .contact-info {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
#contacto.visible .contact-info {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: 0.3s;
}

/* ==========================================================================
   OPTIMIZACIÓN DE RENDIMIENTO EN MÓVILES (FCP)
   ========================================================================== */
@media (max-width: 768px) {
    /* Apagar efectos de GPU costosos (Glassmorphism) en pantallas chicas */
    .tech-visual *, .navbar.scrolled {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    /* Mejorar el SEO en móviles: Agrandar área táctil de enlaces */
    footer a {
        display: inline-block;
        padding: 0.5rem 0;
    }
}