/* -------------------------------------------------
   Fuente global, variables y resets
-------------------------------------------------- */

:root {
    --primary-500: #0d6efd;
    --primary-600: #0a58ca;
    --secondary-500: #7526ff;
    --secondary-600: #5b1bd1;
    --dark-900: #0e1320;
    --dark-800: #1a2032;
    --gray-100: #f5f7fa;
    --gray-400: #ced4da;
    --text-900: #212529;
    --text-100: #ffffff;
    --transition-fast: 0.2s ease-in-out;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-900);
    background: var(--gray-100);
    line-height: 1.6;
    overflow-x: hidden;
}

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


/* -------------------------------------------------
   Contenedores utilitarios
-------------------------------------------------- */

.container {
    width: min(90%, 1200px);
    margin-inline: auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--dark-900);
}

.section-subtitle {
    color: var(--dark-900);
    opacity: 0.7;
    margin-top: .75rem;
}


/* -------------------------------------------------
   Header y navegación
-------------------------------------------------- */

.header {
    position: sticky;
    top: 0;
    width: 100%;
    background: var(--text-100);
    z-index: 100;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .05);
    transition: var(--transition-fast);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    width: 38px;
    height: auto;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-600);
}


/* Menú de escritorio */

.nav-menu {
    display: flex;
}

.nav-list {
    display: flex;
    gap: 2.25rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-900);
    font-weight: 500;
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    background: var(--primary-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-500);
}

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


/* Botones de cabecera */

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

.theme-toggle {
    border: none;
    background: transparent;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--dark-900);
}

.cta-button {
    background: var(--primary-500);
    color: var(--text-100);
    font-weight: 600;
    padding: 0.55rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.cta-button:hover {
    background: var(--primary-600);
}


/* Menú móvil */

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--dark-900);
    transition: var(--transition-fast);
}


/* -------------------------------------------------
   Hero
-------------------------------------------------- */

.hero {
    position: relative;
    padding-block: 6rem 5rem;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
}

.animated-grid {
    width: 120%;
    height: 120%;
    background-image: radial-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px);
    background-size: 25px 25px;
    animation: moveGrid 40s linear infinite;
}

@keyframes moveGrid {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    line-height: 1.2;
    font-weight: 800;
    color: var(--text-100);
}

.gradient-text {
    background: linear-gradient(90deg, var(--secondary-500), var(--primary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    margin-block: 1.25rem 2rem;
    color: var(--text-100);
    opacity: .9;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn {
    border: none;
    border-radius: .375rem;
    cursor: pointer;
    font-weight: 600;
    padding: .75rem 1.5rem;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--text-100);
    color: var(--primary-500);
}

.btn-primary:hover {
    background: var(--gray-100);
}

.btn-secondary {
    background: transparent;
    color: var(--text-100);
    border: 2px solid var(--text-100);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, .15);
}

.hero-stats {
    display: flex;
    gap: 2.5rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-100);
}

.stat-label {
    color: var(--text-100);
    opacity: .85;
}


/* -------------------------------------------------
   Servicios
-------------------------------------------------- */

.services {
    padding-block: 6rem 5rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--text-100);
    padding: 2rem 1.75rem;
    border-radius: .75rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .05);
    transition: transform .3s ease, box-shadow .3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, .07);
}

.service-icon {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    font-size: 1.25rem;
    color: var(--text-100);
    margin-bottom: 1.25rem;
}

.service-icon.ai {
    background: var(--secondary-500);
}

.service-icon.bi {
    background: var(--primary-500);
}

.service-icon.valuation {
    background: var(--dark-900);
}

.service-icon {
    background: var(--primary-600);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.service-description {
    font-size: .95rem;
    opacity: .9;
    margin-bottom: 1rem;
}

.service-features {
    list-style: none;
    margin-bottom: 1.25rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .9rem;
    margin-bottom: .5rem;
    color: var(--dark-900);
}

.service-link {
    text-decoration: none;
    font-weight: 600;
    color: var(--primary-500);
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    transition: var(--transition-fast);
}

.service-link:hover {
    gap: .5rem;
}


/* -------------------------------------------------
   Slider de tecnologías
-------------------------------------------------- */

.technologies {
    background: var(--dark-900);
    color: var(--text-100);
    padding-block: 4rem 3rem;
}

.tech-slider {
    overflow: hidden;
}

.tech-track {
    display: flex;
    gap: 3rem;
    animation: scrollTech 25s linear infinite;
}

@keyframes scrollTech {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(calc(-50% - 1.5rem));
    }
}

.tech-item {
    font-weight: 600;
    font-size: 1.125rem;
    white-space: nowrap;
}


/* -------------------------------------------------
   Blog
-------------------------------------------------- */

.blog {
    padding-block: 6rem 5rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--text-100);
    border-radius: .75rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .05);
}

.blog-image {
    position: relative;
}

.blog-image img {
    aspect-ratio: 16/9;
    object-fit: cover;
}

.blog-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--primary-500);
    padding: .25rem .75rem;
    font-size: .75rem;
    border-radius: .25rem;
    color: var(--text-100);
    font-weight: 600;
}

.blog-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-meta {
    display: flex;
    gap: 1rem;
    font-size: .8rem;
    color: var(--gray-400);
    margin-bottom: .5rem;
}

.blog-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: .5rem;
}

.blog-excerpt {
    flex: 1;
    opacity: .9;
    margin-bottom: 1rem;
}

.blog-link {
    align-self: flex-start;
    text-decoration: none;
    font-weight: 600;
    color: var(--primary-500);
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    transition: var(--transition-fast);
}

.blog-link:hover {
    gap: .5rem;
}

.btn-outline {
    border: 2px solid var(--primary-500);
    color: var(--primary-500);
    padding: .75rem 1.5rem;
    background: transparent;
    font-weight: 600;
    border-radius: .375rem;
    transition: var(--transition-fast);
}

.btn-outline:hover {
    background: var(--primary-500);
    color: var(--text-100);
}

.blog-cta {
    text-align: center;
    margin-top: 3rem;
}


/* -------------------------------------------------
   CTA – Lead Magnet
-------------------------------------------------- */

.cta-section {
    background: var(--primary-600);
    color: var(--text-100);
    padding-block: 5rem 4rem;
    text-align: center;
}

.cta-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-subtitle {
    opacity: .95;
    margin-bottom: 2rem;
}

.btn-large {
    font-size: 1.125rem;
    background: var(--text-100);
    color: var(--primary-600);
    border: none;
    border-radius: .375rem;
    padding: .85rem 2.25rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-large:hover {
    background: var(--gray-100);
}


/* -------------------------------------------------
   Footer
-------------------------------------------------- */

.footer {
    background: var(--dark-900);
    color: var(--gray-100);
    padding-block: 4rem 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
    color: var(--text-100);
}

.footer-logo img {
    width: 32px;
}

.footer-title {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-100);
}

.footer-links,
.footer-contact {
    list-style: none;
}

.footer-links li,
.footer-contact li {
    margin-bottom: .5rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--gray-100);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-500);
}

.social-links {
    display: flex;
    gap: .75rem;
    margin-top: 1rem;
}

.social-links a {
    font-size: 1.1rem;
    color: var(--gray-100);
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--primary-500);
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    font-size: .9rem;
    opacity: .8;
}


/* -------------------------------------------------
   Scroll-to-top
-------------------------------------------------- */

.scroll-to-top {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: none;
    background: var(--primary-500);
    color: var(--text-100);
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, transform .3s ease;
    z-index: 80;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}


/* -------------------------------------------------
   Modo oscuro
-------------------------------------------------- */

body.dark {
    background: var(--dark-800);
    color: var(--gray-100);
}

body.dark .header,
body.dark .service-card,
body.dark .blog-card {
    background: var(--dark-800);
    color: var(--gray-100);
}

body.dark .service-link,
body.dark .blog-link,
body.dark .footer-links a:hover {
    color: var(--secondary-500);
}

body.dark .nav-link:hover,
body.dark .nav-link.active {
    color: var(--secondary-500);
}

body.dark .cta-button {
    background: var(--secondary-500);
}

body.dark .btn-outline {
    border-color: var(--secondary-500);
    color: var(--secondary-500);
}

body.dark .btn-outline:hover {
    background: var(--secondary-500);
    color: var(--text-100);
}


/* -------------------------------------------------
   Adaptabilidad
-------------------------------------------------- */

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        inset: 0 0 0 40%;
        background: var(--text-100);
        flex-direction: column;
        padding: 6rem 2rem;
        transform: translateX(100%);
        transition: transform .35s ease;
    }
    .nav-menu.open {
        transform: translateX(0);
    }
    .nav-list {
        flex-direction: column;
        gap: 1.5rem;
    }
    .mobile-menu-toggle {
        display: flex;
    }
}


/* Fix: Gradiente mejorado para Hero */

.gradient-text {
    background: linear-gradient(90deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    filter: drop-shadow(0 2px 8px rgba(0, 212, 255, .5));
}