:root {
    /* Color Palette */
    --color-bg-main: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #e2e8f0;
    /* Lighter background for hover states/cards */
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-accent: #2563eb;
    --color-accent-dim: rgba(37, 99, 235, 0.1);
    --color-highlight: #0ea5e9;
    /* Secondary accent for gradient text */

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --spacing-xxl: 128px;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
    --transition-normal: 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);

    /* Shadows */
    --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--color-text-primary);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

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

ul {
    list-style: none;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    border-radius: 4px;
    font-family: var(--font-heading);
    /* Use heading font for buttons for boldness */
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    background: transparent;
    transition: var(--transition-normal);
    text-align: center;
}

.btn:hover {
    background: var(--color-accent-dim);
    transform: translateY(-3px);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-main);
    font-weight: 700;
}

.btn-primary:hover {
    background: #1d4ed8;
    color: var(--color-bg-main);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.section-padding {
    padding: var(--spacing-xxl) 0;
}

.highlight {
    color: var(--color-accent);
    position: relative;
    display: inline-block;
}

.section-title {
    font-size: clamp(26px, 5vw, 32px);
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin-top: 10px;
    border-radius: 2px;
}

.section-header {
    margin-bottom: var(--spacing-xl);
}

.section-desc {
    font-size: 1.1rem;
    max-width: 600px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header.scrolled {
    height: 80px;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-img {
    height: 80px;
    width: auto;
    transition: var(--transition-normal);
}

.header.scrolled .logo-img {
    height: 60px;
}

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

.nav-links li a {
    font-size: 14px;
    font-family: var(--font-heading);
    color: var(--color-text-primary);
    position: relative;
}

.nav-links li a::before {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-fast);
}

.nav-links li a:hover::before {
    width: 100%;
}

.nav-links li a:hover {
    color: var(--color-accent);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
    /* Offset for fixed header */
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        margin-top: var(--spacing-lg);
    }
}

.hero-title {
    font-size: clamp(40px, 8vw, 80px);
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(16px, 4vw, 20px);
    max-width: 600px;
    margin-bottom: var(--spacing-xl);
}

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

/* Hero Background Blob (Depth) */
.hero-blob {
    position: absolute;
    top: -10%;
    right: -5%;
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--color-accent-dim), rgba(14, 165, 233, 0.1));
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    animation: pulse 8s infinite ease-in-out;
}

.hero-image img {
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    width: 100%;
    animation: float 6s ease-in-out infinite;
}

/* Animations */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }

    100% {
        transform: scale(1);
        opacity: 0.5;
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    /* Usamos animation en lugar de transition para no interferir con el hover */
}

.reveal.active {
    animation: fadeUp 0.8s cubic-bezier(0.5, 0, 0, 1) forwards;
}

/* Animación escalonada (Staggered) para las tarjetas */
.services-grid .service-card:nth-child(2) {
    animation-delay: 0.1s;
}

.services-grid .service-card:nth-child(3) {
    animation-delay: 0.2s;
}

.services-grid .service-card:nth-child(4) {
    animation-delay: 0.3s;
}

/* Services */
.services-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.scroll-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: #ffffff;
    border: 1px solid var(--color-bg-tertiary);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--color-accent);
    transition: var(--transition-normal);
    opacity: 0;
    pointer-events: none;
}

.scroll-btn.visible {
    opacity: 1;
    pointer-events: all;
}

.scroll-btn:hover {
    background: var(--color-accent);
    color: #ffffff;
    transform: translateY(-50%) scale(1.1);
}

.scroll-btn.prev {
    left: -20px;
}

.scroll-btn.next {
    right: -20px;
}

.services-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-lg) var(--spacing-md);
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    /* Suavidad en móviles */
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE/Edge */
}

.services-grid::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.service-card {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 6px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-card);
    cursor: default;
    border: none;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    flex: 0 0 auto;
    width: 85vw;
    max-width: 320px;
    aspect-ratio: 1 / 1;
    height: auto;
    scroll-snap-align: center;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}

.service-card .icon {
    font-size: 30px;
    margin-bottom: var(--spacing-md);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.2);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    backdrop-filter: blur(5px);
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-sm);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.service-card p {
    color: #e2e8f0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Technologies */
.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.tech-item {
    background: var(--color-bg-main);
    border: 1px solid var(--color-bg-tertiary);
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 600;
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-card);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 12px;
}

.tech-item:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.tech-item img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.stat-item {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 6px;
    text-align: center;
    border: 1px solid var(--color-bg-tertiary);
    box-shadow: var(--shadow-card);
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--color-accent);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

@media (max-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
}

.contact-details li {
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.contact-form {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 6px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-bg-tertiary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: #ffffff;
    border: 1px solid var(--color-bg-tertiary);
    border-radius: 4px;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Footer */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    background: var(--color-bg-main);
    border-top: 1px solid var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: 20px;
}