/* Variables y configuraciones globales */
:root {
    --primary-color: #005792;
    --secondary-color: #00A1E4;
    --text-color: #333;
    --background-color: #F4F4F9;
}

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

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

a {
    text-decoration: none;
    color: var(--primary-color);
}

h1, h2, h3 {
    color: var(--primary-color);
}

/* Navbar */
header {
    position: fixed;
    width: 100%;
    background-color: #fff;
    padding: 15px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: space-between;
    gap: 20px;
}

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

/* Hero */
.hero {
    background: url('../images/space-background.webp') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

/* Sección "Sobre Nosotros" */
.about-us {
    padding: 80px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1200px;
    width: 100%;
}

.about-images img {
    max-width: 100%;
    height: auto;
}

/* Sección "Proyectos" */
.projects .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-card {
    position: relative;
}

.project-card img {
    width: 100%;
    height: auto;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .overlay {
    opacity: 1;
}

/* Responsividad */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: block;
    }
}