/* --- Variables y Reset Básico --- */
:root {
    --primary-color: #ffc107; /* Amarillo/Naranja de construcción */
    --dark-color: #212529;
    --medium-gray: #6c757d;
    --light-color: #f8f9fa;
    --font-main: 'Roboto', sans-serif;
    --font-heading: 'Oswald', sans-serif;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    background-color: #fff;
    color: #333;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header y Navegación --- */
/* --- Títulos globales --- */
h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    text-transform: uppercase;
}
.main-header {
    background-color: var(--dark-color);
    color: #fff;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--primary-color);
    text-decoration: none;
}

.main-header nav ul {
    list-style: none;
    display: flex;
}

.main-header nav ul li {
    margin-left: 25px;
}

.main-header nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}

.main-header nav a.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.main-header nav a:hover {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

/* --- Hero Section (Página Inicio) --- */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../img/principal.jpg') no-repeat center center / cover;
    height: 60vh;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.2;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--dark-color);
    padding: 12px 25px;
    font-weight: 700;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 1rem;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.05);
}

/* --- Secciones Generales --- */
.features, .page-title, .modelos-grid, .ficha-container {
    padding: 4rem 0;
}

.features h2, .page-title h1 {
    font-family: var(--font-heading);
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    text-align: center;
}

/* --- Página de Modelos --- */
.modelos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.modelo-card {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.modelo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.modelo-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.modelo-card-content {
    padding: 1.5rem;
}

.modelo-card-content h3 {
    font-family: var(--font-heading);
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.cta-button-secondary {
    display: inline-block;
    background-color: var(--dark-color);
    color: #fff;
    padding: 10px 20px;
    font-size: 0.9rem;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 1rem;
    transition: background-color 0.3s ease;
}
.cta-button-secondary:hover {
    background-color: var(--medium-gray);
}

/* --- Página Ficha Técnica --- */
.ficha-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: flex-start;
}

.ficha-gallery img {
    width: 100%;
    border-radius: 8px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

.specs-table td {
    padding: 12px;
    border-bottom: 1px solid #eee;
}

.specs-table tr:nth-child(even) {
    background-color: var(--light-color);
}

/* --- Footer --- */
.main-footer {
    background-color: var(--dark-color);
    color: var(--medium-gray);
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .features-grid, .ficha-container {
        grid-template-columns: 1fr;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .main-header .container {
        flex-direction: column;
    }
    .main-header nav ul {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        margin-top: 1rem;
        padding: 0;
    }
    .main-header nav ul li {
        margin: 0 18px;
    }
    .ficha-container > div {
        width: 100% !important;
    }
    #qr-ficha-lateral {
        margin-left: 0 !important;
        margin-top: 2rem !important;
        max-width: 100% !important;
        min-width: 0 !important;
        order: 2;
    }
    .ficha-specs {
        order: 1;
    }
    .ficha-container > div {
        display: block !important;
    }
}

/* --- Print Styles --- */
@media print {
    .main-header,
    .main-footer,
    .cta-button,
    .cta-button-secondary,
    #wa-cotizar,
    #whatsapp-float,
    .page-title p {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .page-title h1 {
        margin-top: 0;
        page-break-after: avoid;
    }
    
    .ficha-container {
        page-break-inside: avoid;
    }
    
    .specs-table {
        page-break-inside: avoid;
    }
    
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
}