/* VARIABLES DE COLOR */
:root {
    --verde-coritrac: #008000;
    --tierra-coritrac: #8b5a2b;
    --negro: #1a1a1a;
    --blanco: #ffffff;
    --gris-claro: #f4f4f4;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', sans-serif;
    color: #333;
}

/* CLASE MAESTRA DE ALINEACIÓN */
.contenedor-alineado {
    max-width: 1200px;
    margin: 0 auto !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 90%;
}

/* BARRA SUPERIOR - REFORZADA */
.top-bar {
    background-color: var(--verde-coritrac) !important;
    color: white !important;
    padding: 10px 0 !important;
    font-size: 0.85rem;
    width: 100% !important;
    display: block !important;
}

.contacto-top span {
    margin-right: 25px;
    display: inline-block;
}

.redes-top a {
    color: white !important;
    margin-left: 20px;
    text-decoration: none;
    font-size: 1rem;
    transition: 0.3s;
}

.redes-top a:hover { color: var(--tierra-coritrac) !important; }

/* NAVEGACIÓN */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--blanco);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav { height: 90px; }
.logo img { height: 55px; width: auto; }
.menu-centrado { display: flex; list-style: none; }

.menu-centrado li a {
    text-decoration: none;
    color: var(--negro);
    margin: 0 15px;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    transition: 0.3s;
}

.menu-centrado li a:hover { color: var(--verde-coritrac); }

.btn-nav-wa {
    background: #25d366;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 0.8rem;
}

/* HERO */
#hero {
    position: relative;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

.video-fondo {
    position: absolute;
    top: 50%; left: 50%;
    min-width: 100%; min-height: 100%;
    z-index: -1;
    transform: translate(-50%, -50%);
    object-fit: cover;
}

#hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content { position: relative; z-index: 1; }
.hero-content h1 { font-size: 3.5rem; margin-bottom: 10px; }
.btn-principal {
    display: inline-block;
    background: var(--verde-coritrac);
    color: white;
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    margin-top: 20px;
}

/* TÍTULOS */
.titulo-seccion {
    font-size: 2.5rem;
    color: var(--verde-coritrac);
    margin-bottom: 50px;
    text-align: center;
    width: 100%;
}

/* SECCIONES GENERALES */
#nosotros, #servicios, #galeria { padding: 80px 5%; }
#servicios { background: var(--gris-claro); }

.contenedor-nosotros, .contenedor-servicios, .grid-galeria {
    max-width: 1200px;
    margin: 0 auto;
}

.contenedor-nosotros { display: flex; align-items: center; gap: 50px; flex-wrap: wrap; }
.texto-nosotros { flex: 1.2; min-width: 300px; }
.texto-nosotros h2 { color: var(--verde-coritrac); font-size: 2.5rem; margin-bottom: 20px; }

.imagen-nosotros { flex: 0.8; min-width: 300px; display: flex; justify-content: center; }
.imagen-nosotros img { max-width: 450px; width: 100%; border-radius: 15px; box-shadow: 15px 15px 0px var(--verde-coritrac); }

.contenedor-servicios { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.tarjeta { background: var(--blanco); padding: 40px; border-radius: 10px; border-bottom: 5px solid var(--verde-coritrac); text-align: center; }

.grid-galeria { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; }
.foto img { width: 100%; height: 250px; object-fit: cover; border-radius: 10px; }

/* CONTACTO */
#contacto { padding: 80px 5%; background: var(--verde-coritrac); color: white; text-align: center; }
.redes-sociales a { color: white; font-size: 2.5rem; margin: 0 15px; }
.btn-whatsapp { display: inline-block; background: #25d366; color: white; padding: 15px 40px; border-radius: 50px; text-decoration: none; font-weight: bold; margin-top: 15px; }

/* FOOTER */
footer { background: var(--negro); color: #777; padding: 30px 5%; text-align: center; }

/* RESPONSIVO */
@media (max-width: 900px) {
    .top-bar { display: none !important; }
    .menu-centrado { display: none; }
    nav { justify-content: center !important; }
    .nav-extra { display: none; }
    .hero-content h1 { font-size: 2.2rem; }
}