:root {
    --primary-color: #0f2340; /* Azul oscuro minero/corporativo */
    --secondary-color: #e67e22; /* Naranja industrial de seguridad */
    --text-color: #2c3e50;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --gray: #7f8c8d;
}

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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 10px auto 0 auto;
}

/* Header & Navbar */
.main-header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1.2rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--white);
}

.nav-menu a {
    color: #bdc3c7;
    text-decoration: none;
    margin-left: 25px;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--secondary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(15, 35, 64, 0.75), rgba(15, 35, 64, 0.75)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1200&q=80') no-repeat center center/cover;
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
}

.hero-content max-width: 800px;

.hero-content h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #ecf0f1;
}

.btn {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    transition: background 0.3s, transform 0.2s;
    border: none;
}

.btn:hover {
    background-color: #d35400;
    transform: translateY(-2px);
}

/* Page Banners */
.page-banner {
    height: 30vh;
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    text-align: center;
}

.page-banner h1 {
    font-size: 2.5rem;
}

/* Features / Cards */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card-img {
    height: 200px;
    background-size: cover;
    background-position: center;
}

.card-content {
    padding: 25px;
}

.card-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* About Grid */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 50px;
}

@media (max-width: 768px) {
    .about-grid, .contact-grid { grid-template-columns: 1fr !important; }
}

.about-text p {
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.about-img {
    height: 350px;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
}

.mvv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.mvv-card {
    background: var(--light-bg);
    padding: 30px;
    border-top: 4px solid var(--secondary-color);
    border-radius: 4px;
}

.mvv-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Services Page */
.services-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.service-item {
    background: var(--light-bg);
    padding: 25px;
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
}

.service-item h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.btn-submit {
    width: 100%;
    cursor: pointer;
}

/* Footer */
.main-footer {
    background-color: #0b1526;
    color: #95a5a6;
    padding: 50px 0 20px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-content h3 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #95a5a6;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    border-top: 1px solid #1a2536;
    padding-top: 20px;
    font-size: 0.9rem;
}