:root {
    --gold: #D4AF37;
    --dark: #121212;
    --light: #FFFFFF;
    --soft-gray: #f9f9f9;
    --font-main: 'Montserrat', sans-serif;
    --font-serif: 'Playfair Display', serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); color: var(--dark); background: var(--light); line-height: 1.7; overflow-x: hidden; }

/* --- NAVBAR --- */
.navbar { position: fixed; top: 0; width: 100%; z-index: 1000; padding: 20px 50px; background: #000000; border-bottom: 1px solid rgba(255,255,255,0.1); }
.nav-container { display: flex; justify-content: space-between; align-items: center; max-width: 1400px; margin: 0 auto; }
.logo-brand { display: flex; align-items: center; font-weight: 700; letter-spacing: 2px; }
.logo-brand img { height: 45px; margin-right: 15px; }
.logo-brand span { color: var(--gold); }
.nav-links { display: flex; list-style: none; gap: 30px; }
.nav-links a { text-decoration: none; color: #ffffff; text-transform: uppercase; font-size: 13px; letter-spacing: 1px; transition: 0.3s; }
.nav-links a:hover { color: var(--gold); }
.menu-toggle { display: none; font-size: 1.5rem; cursor: pointer; }

/* --- HERO PRINCIPAL (PORTADA) --- */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('assets/hero-bg.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}
.gold-text { color: var(--gold) !important; }
.hero-content { text-align: center; color: white; padding: 0 20px; }
.hero h1 { font-family: var(--font-serif); font-size: 4rem; margin-bottom: 20px; }
.btn-gold { display: inline-block; padding: 15px 40px; background: var(--gold); color: white; text-decoration: none; font-weight: bold; border-radius: 2px; transition: 0.4s; margin-top: 30px; }
.btn-gold:hover { background: #b8860b; transform: translateY(-3px); }

/* --- SECCIÓN PUENTE (TÍTULO INGENIERÍA) --- */
.engineering-intro {
    background-color: #ffffff;
    padding: 60px 0 0px 0; /* Padding base para PC */
    text-align: center;
    position: relative;
    z-index: 5;
}

.engineering-intro h2 {
    color: var(--dark);
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

/* --- NUEVO HERO SLIDER (SECCIÓN MISIÓN/VISIÓN) --- */
#mision-vision-hero {
    position: relative;
    width: 100%;
    overflow: hidden;
    background-color: #121212;
}

.hero-slider-wrapper {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    height: 650px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.hero-slider-wrapper::-webkit-scrollbar { display: none; }

.hero-slide {
    flex: 0 0 100%;
    height: 100%;
    position: relative;
    background-size: cover;
    background-position: center;
    scroll-snap-align: center;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.slide-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 60%, rgba(0,0,0,0.1) 100%);
    z-index: 1;
}

/* CAJA DE TEXTO (GLASSMORPHISM) */
.slide-content {
    position: relative;
    z-index: 2;
    color: white;
    max-width: 600px;
    background: rgba(0, 0, 0, 0.4); 
    backdrop-filter: blur(5px);
    border-left: 5px solid var(--gold);
    padding: 40px; 
    margin-left: 10%;
    border-radius: 0 8px 8px 0;
}

.slide-content h4 {
    color: var(--gold);
    font-size: 0.9rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 15px;
}

.slide-content h2 {
    font-size: 3.5rem;
    font-family: var(--font-serif);
    margin-bottom: 20px;
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.gold-line-short {
    width: 60px;
    height: 4px;
    background-color: var(--gold);
    margin-bottom: 25px;
}

.slide-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #f0f0f0;
    font-weight: 300;
}

/* Indicadores del Hero */
.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.h-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transition: 0.3s;
    cursor: pointer;
}
.h-dot.active {
    background: var(--gold);
    transform: scale(1.2);
}

/* --- BOTÓN SÓLIDO DORADO --- */
.btn-slider {
    display: inline-block;
    background-color: var(--gold);
    color: #ffffff !important;
    padding: 15px 35px;
    margin-top: 25px;
    
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 1px;
    border: none;
    border-radius: 2px;
    
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

.btn-slider:hover {
    background-color: #b8860b;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.3);
    color: white !important;
}

.btn-slider i {
    margin-left: 10px;
    transition: transform 0.3s;
}

.btn-slider:hover i {
    transform: translateX(5px);
}

/* --- ESTILOS GENERALES Y UTILIDADES --- */
.story-section { padding: 100px 10%; background: var(--soft-gray); }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.story-text h2 { font-family: var(--font-serif); font-size: 2.5rem; margin-bottom: 30px; }
.mision-item { margin-bottom: 50px; }
.vision-item h3, .mision-item h3 { color: var(--gold); margin-bottom: 15px; font-size: 1.2rem; text-transform: uppercase; letter-spacing: 1px; }
.story-image { width: 100%; height: 500px; overflow: hidden; border-radius: 5px; }
.img-esencia { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.story-image:hover .img-esencia { transform: scale(1.08); }

/* --- SERVICIOS --- */
.services-section { padding: 100px 10% 60px; text-align: center; position: relative; }
.section-header h2 { font-family: var(--font-serif); font-size: 2.5rem; margin-bottom: 30px; color: var(--dark); }
.underline { width: 60px; height: 3px; background: var(--gold); margin: 20px auto 50px; }
.services-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { height: 400px; background: #222; display: flex; align-items: flex-end; padding: 30px; transition: 0.5s; cursor: pointer; border: 1px solid rgba(255,255,255,0.1); }
.service-card:hover { transform: scale(1.02); border-color: var(--gold); }
.service-info { color: white; text-align: left; }
.service-info h3 { font-size: 1.5rem; color: var(--gold); margin-bottom: 5px; }

/* Imágenes de fondo Servicios */
.card-cnc { background: linear-gradient(to bottom, rgba(0,0,0,0), rgba(0,0,0,0.8)), url('assets/cnc.jpeg') center/cover no-repeat !important; }
.card-proto { background: linear-gradient(to bottom, rgba(0,0,0,0), rgba(0,0,0,0.8)), url('assets/prototipo.png') center/cover no-repeat !important; }
.card-brand { background: linear-gradient(to bottom, rgba(0,0,0,0), rgba(0,0,0,0.8)), url('assets/branding.png') center/cover no-repeat !important; }

/* Slider Dots (Servicios) */
.slider-dots { display: none; justify-content: center; gap: 10px; position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 10; }
.dot { width: 10px; height: 10px; background-color: #555; border-radius: 50%; transition: 0.3s; }
.dot.active { background-color: var(--gold); transform: scale(1.3); }

/* --- BARRA DE PROPUESTA DE VALOR (KOTLER) --- */
.value-proposition {
    background-color: var(--soft-gray);
    padding: 80px 20px;
    border-top: 1px solid rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.value-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    gap: 40px;
    text-align: center;
}

.value-item {
    flex: 1;
    padding: 20px;
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
}

.value-item i {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 20px;
    display: inline-block;
}

.value-item h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 10px;
    font-weight: 700;
}

.value-item p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    max-width: 300px;
    margin: 0 auto;
}

/* --- CONTACTO --- */
.contact-section { padding: 100px 10%; background-color: #121212; color: white; text-align: center; }
.contact-card h2 { font-family: var(--font-serif); font-size: 2.5rem; text-transform: uppercase; letter-spacing: 3px; margin-bottom: 40px; }
.contact-links p { margin: 15px 0; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.contact-links i { color: var(--gold); margin-right: 15px; }
.contact-links a { color: #ffffff; text-decoration: none; transition: color 0.3s ease; font-weight: 300; }
.contact-links a:hover { color: var(--gold) !important; }
.btn-whatsapp { display: inline-block; margin-top: 40px; padding: 15px 40px; border: 1px solid var(--gold); color: var(--gold); text-decoration: none; text-transform: uppercase; font-size: 12px; font-weight: bold; letter-spacing: 2px; transition: 0.4s; }
.btn-whatsapp:hover { background-color: var(--gold); color: #000; }

/* --- UBICACIÓN --- */
.location-section { padding: 80px 0; background-color: var(--dark); text-align: center; }
.location-section h2 { color: white; font-family: var(--font-serif); font-size: 2.5rem; }
.map-container { position: relative; width: 100%; height: 400px; overflow: hidden; margin-top: 40px; border-top: 1px solid rgba(212,175,55,0.3); border-bottom: 1px solid rgba(212,175,55,0.3); }
.map-image { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; filter: brightness(0.8); }
.map-container:hover .map-image { filter: brightness(0.6) blur(5px); transform: scale(1.05); }
.map-overlay { position: absolute; top: 20px; left: 50%; transform: translateX(-50%); color: white; width: 80%; z-index: 2; pointer-events: none; }
.location-title { font-family: var(--font-serif); font-size: 2rem; color: var(--gold); margin-bottom: 0; }
.location-subtitle { font-size: 1.1rem; margin-top: -5px; }
.online-badge { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); background-color: rgba(0,0,0,0.8); border: 1px solid var(--gold); color: var(--gold); padding: 10px 25px; border-radius: 30px; font-weight: bold; z-index: 3; pointer-events: none; }

/* --- ELEMENTOS FLOTANTES --- */
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; background-color: var(--gold); color: #fff; padding: 12px 20px; border-radius: 50px; display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: bold; font-size: 14px; box-shadow: 0 4px 15px rgba(0,0,0,0.3); z-index: 1000; transition: 0.3s; }
.whatsapp-float:hover { transform: translateY(-5px); background-color: #b8860b; }

/* --- DROPDOWN MENU --- */
.dropdown { position: relative; display: inline-block; height: 100%; }
.dropdown-content { visibility: hidden; opacity: 0; transform: translateY(15px); position: absolute; top: 100%; left: 0; background-color: #121212; min-width: 240px; box-shadow: 0px 10px 20px rgba(0,0,0,0.5); z-index: 1000; border: 1px solid var(--gold); border-radius: 0 0 8px 8px; padding: 10px 0; list-style: none; transition: all 0.3s ease-in-out; }
.dropdown:hover .dropdown-content { visibility: visible; opacity: 1; transform: translateY(0); }
.dropdown-content li a { color: #e0e0e0; padding: 12px 20px; text-decoration: none; display: block; font-size: 0.95rem; font-weight: 500; transition: background-color 0.2s, color 0.2s; }
.dropdown-content li a:hover { background-color: var(--gold); color: #000; }
.dropbtn i { font-size: 0.7rem; margin-left: 8px; transition: transform 0.3s; }
.dropdown:hover .dropbtn i { transform: rotate(180deg); }

/* --- ESTILOS PÁGINA "NOSOTROS" --- */
.header-nosotros { background-color: #2c3e50; color: white; padding: 3rem 1rem; text-align: center; }
.container-texto { max-width: 800px; margin: 0 auto; padding: 2rem; line-height: 1.8; }
.mision-vision-box { background: #f8f9fa; border-left: 5px solid #2c3e50; padding: 2rem; margin-bottom: 2rem; border-radius: 4px; }
.btn-volver { display: inline-block; margin-top: 2rem; text-decoration: none; color: #2c3e50; font-weight: bold; }

/* --- UTILIDAD GLOBAL --- */
.text-white h2 { color: #ffffff !important; }

/* --- FOOTER PROFESIONAL (NUEVO) --- */
.main-footer {
    background-color: #050505;
    color: #aeaeae;
    padding-top: 80px;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    font-size: 0.95rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px 20px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    color: white;
    font-weight: 700;
    letter-spacing: 2px;
}
.footer-logo img {
    height: 40px;
    filter: brightness(0.9);
}
.brand-col p {
    line-height: 1.6;
    max-width: 300px;
}

.footer-col h4 {
    color: white;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 25px;
}

.links-col ul, .contact-list { list-style: none; }
.links-col li { margin-bottom: 12px; }
.links-col a {
    color: #aeaeae;
    text-decoration: none;
    transition: 0.3s;
}
.links-col a:hover {
    color: var(--gold);
    padding-left: 5px;
}

/* ESTILOS PARA LINKS DE CONTACTO (CORREGIDO: AHORA ESTÁ FUERA DE MEDIA QUERIES) */
.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 15px;
}
.contact-list i {
    color: var(--gold);
    margin-top: 5px;
}
.contact-list a {
    color: #aeaeae;
    text-decoration: none;
    transition: 0.3s;
}
.contact-list a:hover {
    color: var(--gold);
    text-shadow: 0 0 5px rgba(212, 175, 55, 0.3);
}

.social-icons {
    margin-top: 25px;
    display: flex;
    gap: 15px;
}
.social-icons a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: 0.3s;
    border: 1px solid transparent;
}
.social-icons a:hover {
    background: var(--gold);
    border-color: var(--gold);
    transform: translateY(-3px);
}

.footer-bottom {
    background-color: #000;
    padding: 20px;
    text-align: center;
    font-size: 0.8rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    letter-spacing: 1px;
}

/* =========================================
   MEDIA QUERIES (MÓVIL)
   ========================================= */
@media (max-width: 768px) {
    /* NAVBAR */
    .nav-links { position: fixed; top: 0; right: -100%; background-color: #000000; width: 80%; height: 100vh; display: flex !important; flex-direction: column !important; justify-content: flex-start !important; align-items: center !important; padding-top: 100px !important; gap: 10px !important; transition: 0.5s cubic-bezier(0.77,0.2,0.05,1.0); z-index: 1000; overflow-y: auto; }
    .nav-links li { width: 100%; height: auto !important; margin: 0 !important; display: block; }
    .nav-links.active { right: 0 !important; }
    .nav-links a { display: block; font-size: 1.1rem; color: white; letter-spacing: 2px; width: 100%; text-align: center; padding: 15px 0; text-decoration: none; }
    .menu-toggle { display: block; position: relative; color: var(--gold); z-index: 1100; font-size: 1.8rem; cursor: pointer; }

    /* HERO PORTADA */
    .hero h1 { font-size: 2.2rem; }

    /* AJUSTE TÍTULO PUENTE EN MÓVIL */
    .engineering-intro { 
        padding: 40px 0 10px 0 !important; 
    }
    .engineering-intro h2 { font-size: 2rem; margin-bottom: 10px; }
    .engineering-intro::after { display: none; }

    /* NUEVO HERO SLIDER (MÓVIL) */
    .hero-slider-wrapper { height: 500px; }
    .hero-slide { justify-content: center; align-items: center; }
    .slide-overlay { background: rgba(0,0,0,0.7); }

    /* ESTILOS DE LA CAJA DE TEXTO EN MÓVIL */
    .slide-content {
        background: transparent;
        backdrop-filter: none;
        border: none;
        padding: 0 20px;
        margin-left: 0;
        text-align: center;
        max-width: 100%;
    }
    
    .slide-content h2 { font-size: 2.2rem; text-align: center; text-shadow: none; }
    .slide-content h4, .slide-content p { text-align: center; }
    .gold-line-short { margin: 0 auto 20px auto; }

    /* AJUSTE DEL BOTÓN EN MÓVIL */
    .btn-slider {
        margin-top: 20px;
        padding: 12px 30px;
        font-size: 0.8rem;
    }

    /* ESTILOS GENERALES MÓVIL */
    .story-grid { grid-template-columns: 1fr !important; text-align: center; gap: 40px; }
    .story-image { height: 300px !important; }
    
    /* SERVICIOS SLIDER MÓVIL */
    .services-gallery { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding: 20px 5%; gap: 15px; scrollbar-width: none; }
    .services-gallery::-webkit-scrollbar { display: none; }
    .service-card { min-width: 85vw; scroll-snap-align: center; height: 350px; }
    .slider-dots { display: flex; }

    /* PROPUESTA DE VALOR EN MÓVIL */
    .value-container {
        flex-direction: column; 
        gap: 50px;
    }
    .value-proposition {
        padding: 50px 20px;
    }

    /* DROPDOWN MENU MÓVIL */
    .dropdown { width: 100%; display: block; }
    .dropbtn { display: block !important; width: 100%; text-align: center; position: relative; padding: 15px 0 !important; }
    .dropbtn i { position: absolute; right: 25px; top: 50%; transform: translateY(-50%); font-size: 0.9rem; padding: 10px; color: var(--gold); transition: 0.3s; }
    .dropdown-content { position: static; display: none; visibility: visible; opacity: 1; transform: none; width: 100%; background-color: #121212; padding: 0; border: none; box-shadow: none; }
    .dropdown.active .dropdown-content { display: block; }
    .dropdown-content li a { text-align: center; background-color: #1a1a1a; border-bottom: 1px solid rgba(255,255,255,0.05); padding: 12px 0 !important; font-size: 0.95rem; color: #bbb; }
    .dropdown-content li a:active, .dropdown-content li a:hover { color: var(--gold) !important; background-color: #222 !important; transition: 0.1s; }

    /* UBICACIÓN */
    .location-title { font-size: 1.5rem; }
    .location-subtitle { font-size: 0.9rem; }
    .map-container { height: 250px; }

    /* FOOTER MÓVIL */
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .footer-logo { justify-content: center; }
    .brand-col p { margin: 0 auto; }
    .contact-list li { justify-content: center; }
    .social-icons { justify-content: center; }
}