/* Reseteo y Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Arial, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    color: #333;
    line-height: 1.6;
    background-color: #ffffff;
}

/* Variables de Color Industriales */
:root {
    --azul-oscuro: #122a4a;
    --naranja-industrial: #e66819;
    --gris-oscuro: #1d212a;
    --gris-claro: #f4f6f9;
}

/* Barra de Navegación */
header {
    background-color: var(--azul-oscuro);
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 8%;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 4px solid var(--naranja-industrial);
}

header .logo {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}

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

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--naranja-industrial);
}

/* Sección Hero (Portada) */
.hero {
    background: linear-gradient(rgba(18, 42, 74, 0.85), rgba(29, 33, 42, 0.9)), 
                url('https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&w=1200&q=80') no-repeat center center/cover;
    height: 70vh;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 42px;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    color: #ddd;
}

.btn {
    display: inline-block;
    background-color: var(--naranja-industrial);
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
    transition: background 0.3s;
}

.btn:hover {
    background-color: #b84f10;
}

/* Estilos de Contenedores */
.container {
    padding: 70px 10%;
    text-align: center;
}

.bg-light {
    background-color: var(--gris-claro);
}

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

.text-white {
    color: #fff;
}

h2 {
    font-size: 32px;
    margin-bottom: 15px;
    position: relative;
    color: var(--azul-oscuro);
}

.text-white h2 {
    color: #fff;
}

.intro-text {
    max-width: 800px;
    margin: 0 auto 40px auto;
    font-size: 17px;
    color: #555;
}

/* Diseños en Rejilla (Grid) */
.grid {
    display: grid;
    gap: 25px;
    margin-top: 20px;
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* Tarjetas de Características */
.feature-card {
    background: #fff;
    padding: 25px;
    border-radius: 4px;
    border-top: 4px solid var(--azul-oscuro);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--azul-oscuro);
}

/* Bloques de Servicio */
.service-block {
    background: #fff;
    padding: 35px;
    border-left: 5px solid var(--naranja-industrial);
    text-align: left;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.service-block h3 {
    font-size: 24px;
    color: var(--azul-oscuro);
}

.service-block .subtitle {
    font-style: italic;
    color: var(--naranja-industrial);
    margin-bottom: 15px;
    font-weight: 600;
}

/* Sección de Marcas */
.brands-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

.brands-grid span {
    background: var(--gris-claro);
    color: var(--azul-oscuro);
    padding: 10px 20px;
    font-weight: bold;
    border-radius: 4px;
    border: 1px solid #ddd;
}

/* Sección de Contacto */
.contact-info {
    margin-top: 30px;
    font-size: 18px;
}

.contact-info p {
    margin: 10px 0;
}

.contact-info a {
    color: var(--naranja-industrial);
    text-decoration: none;
    font-weight: bold;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Pie de Página */
footer {
    background-color: #111;
    color: #777;
    text-align: center;
    padding: 20px;
    font-size: 14px;
    border-top: 1px solid #222;
}