:root {
    --verde: #4B7447;
    --madera: #C49E72;
    --hueso: #F9F6F0;
    --oscuro: #2C2C2C;
}

* { box-sizing: border-box; }
body { font-family: 'Lato', sans-serif; margin: 0; background-color: var(--hueso); color: var(--oscuro); overflow-x: hidden; }
h1, h2, h3 { font-family: 'Montserrat', sans-serif; text-transform: uppercase; }

.container { width: 90%; max-width: 1100px; margin: auto; }
.section-padding { padding: 80px 0; }
.section-alt { background: white; padding: 80px 0; }
.text-center { text-align: center; }

/* Navegación y Logo */
header { background: white; padding: 15px 0; border-bottom: 3px solid var(--verde); position: sticky; top: 0; z-index: 1000; }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo-nav { display: flex; align-items: center; gap: 10px; }
.logo-nav img { height: 50px; width: auto; }
.logo-nav span { font-weight: bold; color: var(--verde); font-size: 1.3rem; font-family: 'Montserrat', sans-serif; }

nav ul { display: flex; list-style: none; gap: 20px; padding: 0; margin: 0; }
nav a { text-decoration: none; color: var(--oscuro); font-weight: bold; font-size: 0.85rem; transition: 0.3s; }
nav a:hover { color: var(--verde); }
.btn-nav { background: var(--verde); color: white !important; padding: 10px 18px; border-radius: 5px; }

/* Hero */
.hero { background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('img/hero-bg.jpg') center/cover fixed; color: white; padding: 100px 0; text-align: center; }
.hero h1 { font-size: 3.2rem; margin: 20px 0; line-height: 1.1; }
.badge { background: var(--madera); padding: 5px 20px; border-radius: 50px; font-weight: bold; font-size: 0.8rem; }
.btn-main { background: var(--verde); color: white; padding: 18px 35px; text-decoration: none; font-weight: bold; border-radius: 5px; display: inline-block; transition: 0.3s; border: none; cursor: pointer; }
.btn-main:hover { transform: scale(1.05); filter: brightness(1.1); }

/* Logo Intro */
.logo-intro img { height: 80px; margin-bottom: 20px; }

/* Iconos de Características */
.icon-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; margin-top: 50px; text-align: center; }
.feature img { width: 60px; height: 60px; margin-bottom: 20px; }
.feature h4 { color: var(--verde); font-size: 1.2rem; margin-bottom: 10px; }

/* Modelo Destacado */
.card-featured { background: white; border: 2px solid var(--madera); border-radius: 12px; margin-bottom: 60px; padding: 40px; position: relative; box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.badge-featured { position: absolute; top: -18px; left: 50%; transform: translateX(-50%); background: var(--verde); color: white; padding: 8px 30px; border-radius: 50px; font-weight: bold; font-size: 0.85rem; }
.card-content-flex { display: flex; gap: 40px; align-items: center; }
.card-content-flex img { width: 55%; border-radius: 8px; height: 350px; object-fit: cover; }
.card-text { width: 45%; text-align: left; }
.card-text h3 { font-size: 2.2rem; color: var(--verde); margin-bottom: 15px; }

/* Grilla de Modelos */
.grid-modelos { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 30px; }
.card { background: white; border: 1px solid #ddd; padding: 25px; border-radius: 8px; text-align: center; transition: 0.4s; }
.card:hover { transform: translateY(-10px); border-color: var(--verde); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.card img { width: 100%; height: 180px; object-fit: cover; border-radius: 5px; margin-bottom: 20px; }
.btn-download { color: var(--madera); text-decoration: none; font-weight: bold; display: block; margin-top: 15px; font-size: 0.9rem; }

/* Botón WhatsApp */
.whatsapp-float { position: fixed; bottom: 30px; right: 30px; background-color: #25d366; color: #FFF; border-radius: 50px; text-align: center; font-size: 35px; width: 65px; height: 65px; line-height: 65px; box-shadow: 2px 2px 10px rgba(0,0,0,0.2); z-index: 2000; transition: 0.3s; }
.whatsapp-float:hover { background-color: #128c7e; transform: scale(1.1); color: white; }

footer { background: #111; color: #777; padding: 60px 0; text-align: center; margin-top: 50px; }

/* Formulario */
.contact-form { max-width: 700px; margin: 0 auto; background: white; padding: 40px; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
.form-section { margin-bottom: 30px; text-align: left; }
.form-section h3 { color: var(--verde); border-bottom: 2px solid var(--madera); padding-bottom: 10px; margin-bottom: 20px; font-size: 1.2rem; }

.form-group { margin-bottom: 15px; }
.form-group input, .form-group textarea { width: 100%; padding: 14px; border: 1px solid #ddd; border-radius: 5px; font-family: 'Lato', sans-serif; }
.form-group label { display: block; font-weight: bold; margin-bottom: 5px; font-size: 0.9rem; color: var(--verde); }

/* Estilos de Selección SI / NO */
.form-check-group { margin-bottom: 20px; padding: 15px; background: var(--hueso); border-radius: 5px; border-left: 4px solid var(--verde); }
.form-check-group p { margin: 0 0 10px 0; font-weight: bold; font-size: 0.95rem; }
.form-check-group label { margin-right: 25px; cursor: pointer; font-weight: bold; }

.success-msg { display: none; color: var(--verde); text-align: center; font-weight: bold; margin-top: 20px; padding: 15px; background: #e8f5e9; border-radius: 5px; }

@media (max-width: 768px) {
    .card-content-flex { flex-direction: column; }
    .card-content-flex img, .card-text { width: 100%; text-align: center; }
    .hero h1 { font-size: 2.2rem; }
    nav ul { display: none; }
}