/* Variables de la paleta EMCA */
:root {
    --naranja: #FF6600;
    --negro: #1A1A1A;
    --gris-oscuro: #333333;
    --gris-claro: #F4F4F4;
    --blanco: #FFFFFF;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    background-color: var(--blanco);
    color: var(--negro);
    overflow-x: hidden;
}

/* --- NAVEGACIÓN --- */
header {
    position: fixed;
    width: 100%;
    top: 0;
    background: transparent;
    padding: 20px 0;
    transition: 0.4s;
    z-index: 1000;
}

header.scrolled {
    background: var(--negro);
    padding: 10px 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    color: var(--blanco);
    font-size: 1.8rem;
    font-weight: 900;
}

.logo span { color: var(--naranja); }

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: var(--blanco);
    text-decoration: none;
    font-weight: 700;
    transition: 0.3s;
}

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

/* --- HERO --- */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(26, 26, 26, 0.8), rgba(26, 26, 26, 0.8)), url('fondo-maquinaria.jpg') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--blanco);
    padding: 0 20px;
}

.hero h1 { font-size: 3.5rem; text-transform: uppercase; margin-bottom: 20px; }
.hero h1 span { color: var(--naranja); }
.hero p { font-size: 1.2rem; margin-bottom: 30px; max-width: 600px; margin-inline: auto; }

.btn {
    background: var(--naranja);
    color: var(--blanco);
    padding: 15px 35px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    display: inline-block;
    transition: 0.3s;
    text-transform: uppercase;
}

.btn:hover { background: #e65c00; transform: scale(1.05); }

/* --- SECCIONES Y GRIDS --- */
.section { padding: 80px 20px; }
.container { max-width: 1200px; margin: 0 auto; }
.titulo-seccion { text-align: center; font-size: 2.5rem; margin-bottom: 50px; text-transform: uppercase; }
.titulo-seccion::after {
    content: ''; display: block; width: 60px; height: 4px; background: var(--naranja); margin: 10px auto;
}

.bg-dark { background: var(--gris-oscuro); }
.text-white { color: var(--blanco); }

.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

/* --- TARJETAS --- */
.card {
    background: var(--gris-claro);
    padding: 40px 20px;
    text-align: center;
    border-radius: 10px;
    border-bottom: 5px solid var(--naranja);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: 0.3s;
}

.card:hover { transform: translateY(-10px); }
.card i { font-size: 3rem; color: var(--naranja); margin-bottom: 20px; }

/* --- CATÁLOGO --- */
.catalogo-item {
    background: var(--negro);
    border: 1px solid #444;
    border-radius: 10px;
    overflow: hidden;
    color: white;
    text-align: center;
}
.img-placeholder { height: 250px; background: #444; display: flex; align-items: center; justify-content: center; }
.catalogo-item h4 { padding: 20px; color: var(--naranja); }

/* --- CONTACTO --- */
.info-detalles p { font-size: 1.2rem; margin-bottom: 20px; }
.info-detalles i { color: var(--naranja); font-size: 1.5rem; width: 30px; }
.mapa-box { background: var(--gris-claro); border-radius: 10px; min-height: 300px; }

/* --- WHATSAPP FLOTANTE --- */
.whatsapp-btn {
    position: fixed; bottom: 30px; right: 30px; background: #25D366; color: white;
    width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 35px; z-index: 1000; box-shadow: 0 4px 10px rgba(0,0,0,0.3); transition: 0.3s;
}
.whatsapp-btn:hover { transform: scale(1.1); }

footer { background: var(--negro); color: var(--blanco); text-align: center; padding: 20px; font-size: 0.9rem; }

/* --- CLASES DE ANIMACIÓN (Ocultas por defecto) --- */
.fade-in, .slide-up, .zoom-in, .slide-right, .slide-left {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, visibility 0.8s;
}

.slide-up { transform: translateY(50px); }
.zoom-in { transform: scale(0.9); }
.slide-right { transform: translateX(-50px); }
.slide-left { transform: translateX(50px); }

/* Clases activas que el JavaScript añadirá */
.is-visible {
    opacity: 1;
    visibility: visible;
    transform: none;
}

@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .nav-links { display: none; } /* En móvil se ocultaría o se haría un menú hamburguesa */
    .hero h1 { font-size: 2.5rem; }
}