/* ── Variables globales ── */
:root {
    --color-dark: #0d0d0d;
    --color-dark-2: #1a1a1a;
    --color-dark-3: #222222;
    --color-gold: #c9a96e;
    --color-gold-light: #d4b87a;
    --color-gold-dark: #b8944a;
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e8e8e8;
    --color-gray-300: #d0d0d0;
    --color-gray-400: #999999;
    --color-gray-500: #666666;
    --color-gray-600: #444444;
    --color-gray-700: #333333;
    --color-gray-800: #222222;
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-accent: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
    --transition-smooth: 0.35s cubic-bezier(0.25, 1, 0.33, 1);
    --transition-bounce: 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 15px 50px rgba(0, 0, 0, 0.18);
    --shadow-xl: 0 30px 80px rgba(0, 0, 0, 0.22);
    --max-width: 1280px;
    --header-height: 85px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
    font-size: 1.05rem;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-dark);
    margin-bottom: 0.75rem;
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); }
h4 {
    font-size: 1.2rem;
    font-family: var(--font-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gold);
}
p {
    margin-bottom: 1.2rem;
    color: var(--color-gray-600);
}
a { color: inherit; text-decoration: none; transition: color var(--transition-smooth); }
a:hover { color: var(--color-gold); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; padding: 0; margin: 0; }

/* ── Utilidades ── */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }
.section { padding: 6rem 0; position: relative; }
.section-light { background-color: var(--color-gray-100); }
.section-dark { background-color: var(--color-dark); color: var(--color-white); }
.section-dark h2, .section-dark h3, .section-dark p { color: var(--color-white); }
.section-dark p { color: var(--color-gray-300); }
.text-center { text-align: center; }
.text-gold { color: var(--color-gold); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

/* ── Botones ── */
.btn {
    display: inline-block;
    font-family: var(--font-accent);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 1rem 2.2rem;
    border-radius: 3px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: 2px solid transparent;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.btn-primary { background-color: var(--color-gold); color: var(--color-dark); border-color: var(--color-gold); }
.btn-primary:hover { background-color: var(--color-gold-dark); border-color: var(--color-gold-dark); color: var(--color-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background-color: transparent; color: var(--color-white); border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background-color: var(--color-white); color: var(--color-dark); border-color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline-dark { background-color: transparent; color: var(--color-dark); border-color: rgba(0,0,0,0.3); }
.btn-outline-dark:hover { background-color: var(--color-dark); color: var(--color-white); border-color: var(--color-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* ── Header ── */
#header {
    position: fixed;
    top: 0; left: 0; width: 100%; z-index: 1000;
    /* Inicio: transparente sobre el hero */
    background-color: transparent;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    transition: all var(--transition-smooth);
    height: var(--header-height);
}

/* Estado después de pasar el hero: fondo blanco */
#header.scrolled-past-hero {
    background-color: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

#header .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: var(--header-height);
}

#header .logo {
    font-family: var(--font-heading); font-size: 1.7rem; font-weight: 700;
    letter-spacing: -0.02em; white-space: nowrap;
    color: var(--color-white);
    transition: color var(--transition-smooth);
}
#header .logo span { color: var(--color-gold); }

/* Logo se vuelve oscuro al salir del hero */
#header.scrolled-past-hero .logo { color: var(--color-dark); }

#header nav ul { display: flex; gap: 2rem; align-items: center; }
#header nav ul li a {
    font-family: var(--font-accent); font-size: 0.85rem; font-weight: 500;
    text-transform: uppercase; letter-spacing: 0.04em;
    color: rgba(255,255,255,0.9);
    position: relative; padding: 0.3rem 0;
    transition: color var(--transition-smooth);
}

/* Enlaces se vuelven oscuros al salir del hero */
#header.scrolled-past-hero nav ul li a { color: var(--color-gray-700); }
#header.scrolled-past-hero nav ul li a:hover { color: var(--color-dark); }

/* Línea decorativa del hover */
#header nav ul li a::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 100%; height: 2px; background-color: var(--color-gold);
    transform: scaleX(0); transform-origin: right;
    transition: transform var(--transition-smooth);
}
#header nav ul li a:hover::after { transform: scaleX(1); transform-origin: left; }

/* Botón de contacto en el header */
#header .btn-header {
    font-size: 0.8rem; padding: 0.7rem 1.5rem;
    color: var(--color-dark); background-color: var(--color-gold);
    border-color: var(--color-gold);
}
/* Al salir del hero, el botón mantiene su estilo dorado, pero si quieres que cambie, puedes agregar más reglas */

/* Menú móvil */
.menu-toggle {
    display: none; background: none; border: none; cursor: pointer;
    padding: 0.5rem; z-index: 1001; flex-direction: column; gap: 5px;
}
.menu-toggle span {
    display: block; width: 26px; height: 2.5px;
    background-color: var(--color-white); /* blanco sobre hero */
    border-radius: 2px; transition: all var(--transition-smooth);
}
#header.scrolled-past-hero .menu-toggle span {
    background-color: var(--color-dark); /* oscuro al salir */
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Navegación móvil abierta */
#header nav.mobile-open {
    display: flex; position: fixed; top:0; left:0; width:100%; height:100vh;
    background-color: var(--color-white); flex-direction: column;
    justify-content: center; align-items: center; z-index: 999;
}
#header nav.mobile-open ul { flex-direction: column; text-align: center; gap: 1.5rem; }
#header nav.mobile-open ul li a { color: var(--color-dark); font-size: 1.2rem; }

/* Menú móvil */
.menu-toggle {
    display: none; background: none; border: none; cursor: pointer;
    padding: 0.5rem; z-index: 1001; flex-direction: column; gap: 5px;
}
.menu-toggle span { display: block; width: 26px; height: 2.5px; background-color: var(--color-dark); border-radius: 2px; transition: all var(--transition-smooth); }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ── Hero ── */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; background-color: var(--color-dark); overflow: hidden;
    padding-top: var(--header-height);
}
.hero .hero-bg { position: absolute; top:0; left:0; width:100%; height:100%; object-fit: cover; opacity: 0.45; filter: brightness(0.7); }
.hero .hero-overlay { position: absolute; top:0; left:0; width:100%; height:100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.11) 0%, rgba(0,0,0,0.10) 50%, rgba(0,0,0,0.13) 100%);
    z-index: 1;
}
.hero .container { position: relative; z-index: 2; padding-top: 3rem; padding-bottom: 3rem; }
.hero .hero-content { max-width: 750px; }
.hero .hero-content .hero-badge {
    display: inline-block; font-family: var(--font-accent); font-size: 0.8rem;
    font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--color-gold); border: 1px solid var(--color-gold);
    padding: 0.5rem 1.2rem; border-radius: 2px; margin-bottom: 2rem;
}
.hero .hero-content h1 { color: var(--color-white); margin-bottom: 1.5rem; font-size: clamp(2.8rem, 6vw, 4.5rem); line-height: 1.15; }
.hero .hero-content h1 span { color: var(--color-gold); }
.hero .hero-content p { color: var(--color-gray-200); font-size: 1.2rem; margin-bottom: 2.5rem; max-width: 550px; line-height: 1.8; }
.hero .hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero .scroll-indicator {
    position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 2;
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    animation: bounceDown 2s infinite; cursor: pointer;
}
.hero .scroll-indicator span { font-family: var(--font-accent); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.7); }
.hero .scroll-indicator .arrow { width: 28px; height: 28px; border-right: 2px solid rgba(255,255,255,0.6); border-bottom: 2px solid rgba(255,255,255,0.6); transform: rotate(45deg); }
@keyframes bounceDown { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(10px); } }

/* ── Sección intro ── */
.intro-section .intro-text { max-width: 700px; margin: 0 auto; text-align: center; }
.intro-section .intro-text h2 { margin-bottom: 1.5rem; }
.divider-gold { width: 60px; height: 3px; background-color: var(--color-gold); margin: 1.5rem auto; }
.intro-section .intro-text p { font-size: 1.1rem; line-height: 1.9; color: var(--color-gray-500); }

/* ── Servicios (Fancy Box) ── */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.service-card {
    position: relative; border-radius: 6px; overflow: hidden;
    background-size: cover; background-position: center; min-height: 380px;
    cursor: pointer; box-shadow: var(--shadow-md);
    transition: all 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.service-card .service-card-overlay {
    position: absolute; top:0; left:0; width:100%; height:100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.5) 50%, rgba(0,0,0,0.85) 100%);
    transition: all 0.5s ease;
}
.service-card:hover .service-card-overlay {
    background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.55) 40%, rgba(0,0,0,0.9) 100%);
}
.service-card .service-card-content { position: absolute; bottom:0; left:0; width:100%; padding: 2.5rem 2rem; z-index: 2; }
.service-card .service-card-content .icon-circle {
    width: 50px; height: 50px; border-radius: 50%; background-color: var(--color-gold);
    display: flex; align-items: center; justify-content: center; margin-bottom: 1.2rem;
    font-size: 1.3rem; color: var(--color-dark);
}
.service-card .service-card-content h3 { color: var(--color-white); margin-bottom: 0.5rem; font-size: 1.4rem; }
.service-card .service-card-content p { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin-bottom: 0; opacity: 0; max-height: 0; overflow: hidden; transition: all 0.4s ease; }
.service-card:hover .service-card-content p { opacity: 1; max-height: 100px; }
.service-card .service-link { position: absolute; top:0; left:0; width:100%; height:100%; z-index: 5; }
.service-card .service-card-content .arrow-link { display: inline-block; font-family: var(--font-accent); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-gold); margin-top: 0.8rem; opacity: 0.8; transition: opacity 0.3s; }
.service-card:hover .service-card-content .arrow-link { opacity: 1; }

/* ── Sobre nosotros ── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-grid .about-image-wrapper { position: relative; }
.about-grid .about-image-wrapper .about-img { border-radius: 6px; width: 100%; height: 500px; object-fit: cover; box-shadow: var(--shadow-lg); }
.about-grid .about-image-wrapper .about-accent { position: absolute; bottom: -30px; right: -30px; width: 180px; height: 180px; background-color: var(--color-gold); border-radius: 6px; z-index: -1; }
.about-grid .about-text h2 { margin-bottom: 1.5rem; }
.about-divider { width: 50px; height: 3px; background-color: var(--color-gold); margin-bottom: 1.5rem; }
.about-grid .about-text p { font-size: 1.05rem; line-height: 1.9; color: var(--color-gray-500); margin-bottom: 1rem; }

/* ── Clientes ── */
.clients-grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 3rem; margin-top: 3rem; }
.clients-grid .client-item { opacity: 0.5; transition: all 0.3s; filter: grayscale(100%); }
.clients-grid .client-item:hover { opacity: 1; filter: grayscale(0%); }
.clients-grid .client-item .client-placeholder { width: 120px; height: 50px; background-color: var(--color-gray-300); border-radius: 4px; display: flex; align-items: center; justify-content: center; font-family: var(--font-accent); font-weight: 600; font-size: 0.8rem; color: var(--color-gray-600); letter-spacing: 0.05em; }

/* ── Recursos ── */
.resources-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; margin-top: 3rem; }
.resource-card { display: flex; align-items: stretch; background-color: var(--color-dark-2); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-md); transition: all var(--transition-smooth); min-height: 320px; }
.resource-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.resource-card .resource-image { width: 40%; min-width: 200px; background-size: cover; background-position: center; position: relative; }
.resource-card .resource-image::after { content: ''; position: absolute; top:0; left:0; width:100%; height:100%; background: rgba(0,0,0,0.3); }
.resource-card .resource-content { width: 60%; padding: 2.5rem; display: flex; flex-direction: column; justify-content: center; }
.resource-card .resource-content h3 { color: var(--color-white); margin-bottom: 1rem; }
.resource-card .resource-content p { color: var(--color-gray-300); font-size: 0.95rem; margin-bottom: 1.5rem; }

/* ── Testimonios ── */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.testimonial-card { background-color: var(--color-white); border-radius: 6px; padding: 2.5rem 2rem; box-shadow: var(--shadow-sm); border: 1px solid var(--color-gray-200); transition: all var(--transition-smooth); position: relative; }
.testimonial-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.testimonial-card .quote-icon { font-size: 3rem; color: var(--color-gold); line-height: 1; font-family: var(--font-heading); margin-bottom: 0.5rem; }
.testimonial-card .testimonial-text { font-style: italic; color: var(--color-gray-600); margin-bottom: 1.5rem; line-height: 1.8; }
.testimonial-card .testimonial-author { font-family: var(--font-accent); font-weight: 600; font-size: 0.9rem; color: var(--color-dark); }
.testimonial-card .testimonial-role { font-size: 0.8rem; color: var(--color-gray-400); }

/* ── CTA Final ── */
.cta-section { background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-3) 100%); text-align: center; padding: 7rem 0; }
.cta-section .cta-content { max-width: 650px; margin: 0 auto; }
.cta-section h2 { color: var(--color-white); margin-bottom: 1rem; }
.cta-section p { color: var(--color-gray-300); font-size: 1.1rem; margin-bottom: 2.5rem; }

/* ── Formulario ── */
#contactFormWrapper label { display: block; color: var(--color-white); margin-bottom: 0.4rem; font-family: var(--font-accent); font-size: 0.85rem; font-weight: 500; }
#contactFormWrapper input,
#contactFormWrapper textarea {
    width: 100%; padding: 0.9rem 1rem; border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.25); background: rgba(255,255,255,0.08);
    color: var(--color-white); font-family: var(--font-body); font-size: 1rem; resize: vertical;
}

/* ── Footer ── */
#footer { background-color: var(--color-dark); color: var(--color-gray-300); padding: 5rem 0 0 0; }
#footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 4rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
#footer .footer-col h4 { color: var(--color-white); margin-bottom: 1.5rem; font-size: 0.85rem; letter-spacing: 0.1em; }
#footer .footer-col p { color: var(--color-gray-400); font-size: 0.9rem; line-height: 1.8; }
#footer .footer-col ul li { margin-bottom: 0.7rem; }
#footer .footer-col ul li a { color: var(--color-gray-400); font-size: 0.9rem; transition: color 0.3s; }
#footer .footer-col ul li a:hover { color: var(--color-gold); }
#footer .footer-logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; color: var(--color-white); margin-bottom: 1rem; display: inline-block; }
#footer .footer-logo span { color: var(--color-gold); }
#footer .footer-bottom { padding: 2rem 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; color: var(--color-gray-500); }
#footer .footer-bottom a { color: var(--color-gray-400); transition: color 0.3s; }
#footer .footer-bottom a:hover { color: var(--color-gold); }
#footer .footer-bottom .ingeniamaze { font-weight: 600; color: var(--color-gold); }

/* ── Animaciones Scroll ── */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s cubic-bezier(0.22,0.61,0.36,1), transform 0.8s cubic-bezier(0.22,0.61,0.36,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .resources-grid { grid-template-columns: 1fr; }
    #footer .footer-grid { grid-template-columns: 1fr 1fr; }
    #header nav { display: none; }
    #header nav.mobile-open { display: flex; position: fixed; top:0; left:0; width:100%; height:100vh; background-color: var(--color-white); flex-direction: column; justify-content: center; align-items: center; z-index: 999; }
    #header nav.mobile-open ul { flex-direction: column; text-align: center; gap: 1.5rem; }
    #header nav.mobile-open ul li a { font-size: 1.2rem; }
    .menu-toggle { display: flex; }
}
@media (max-width: 768px) {
    .services-grid { grid-template-columns: 1fr; }
    .testimonials-grid { grid-template-columns: 1fr; }
    #footer .footer-grid { grid-template-columns: 1fr; }
    .hero .hero-content h1 { font-size: 2.2rem; }
    .hero .hero-content p { font-size: 1rem; }
    .section { padding: 4rem 0; }
    .resource-card { flex-direction: column; }
    .resource-card .resource-image { width: 100%; min-height: 200px; }
    .resource-card .resource-content { width: 100%; }
    .about-grid .about-image-wrapper .about-img { height: 350px; }
    .about-grid .about-image-wrapper .about-accent { width: 100px; height: 100px; bottom: -15px; right: -15px; }
    #header .btn-header { display: none; }
}
@media (max-width: 480px) {
    .container { padding: 0 1.2rem; }
    h2 { font-size: 1.8rem; }
    .btn { padding: 0.8rem 1.5rem; font-size: 0.8rem; }
}