:root {
    --primario: #000000; 
    --secundario: #1e1e1e; 
    --acento: #FFFFFF; 
    --fondo2: #f4f4f4; 
    --fondo: #FFFFFF; 
    --texto: #333333; 
    --oscuro: #1e1e1e;
    --separador: #e0e0e0;
}

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

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

html {
    scroll-behavior: smooth;
}

header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    background-color: var(--fondo);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--secundario);
}

.logo img {
    height: 60px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primario);
}

.logo p {
    font-size: 0.9rem;
    color: var(--secundario);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--secundario);
    font-weight: 500;
    transition: color 0.3s ease, border-bottom 0.3s ease;
}

nav a:hover, nav a.selected {
    color: var(--primario);
    border-bottom: 2px solid var(--primario);
}

.hamburger {
    display: none;
    font-size: 2rem;
    color: var(--secundario);
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 20px;
}

.social a {
    margin-left: 1rem;
    color: var(--secundario);
    font-size: 1.2rem;
    transition: color 0.3s;
}

.social a:hover {
    color: var(--primario);
}

.contact-info {
    margin-top: 0.5rem;
    color: var(--secundario);
    font-size: 0.9rem;
    text-align: center;
}

/* Estilos para la sección "Acerca de" */
.about {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.about h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primario);
    position: relative;
    padding-bottom: 1rem;
}

.about h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--primario);
}

.intro {
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.service-card {
    background: var(--fondo);
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid var(--primario);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primario);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.service-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primario);
}

.service-card h4 {
    font-size: 1.2rem;
    color: var(--primario);
    margin: 1.5rem 0 1rem;
}

.service-card ul {
    list-style-position: inside;
    margin-bottom: 1rem;
}

.service-card ul li {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.service-card ul li strong {
    color: var(--primario);
}

.service-card p {
    margin-bottom: 1rem;
    font-size: 1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--secundario);
    color: white;
    margin-top: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }
    
    .logo {
        margin-bottom: 1rem;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: var(--fondo);
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        padding: 2rem;
        transition: right 0.3s ease;
        z-index: 1000;
    }
    
    nav ul.show {
        right: 0;
        display: flex;
    }
    
    .hamburger {
        display: block;
        z-index: 1001;
    }
    
    .social {
        width: 100%;
        justify-content: center;
        margin-top: 1rem;
    }
    
    .contact-info {
        display: none;
    }
    
    .about {
        padding: 2rem 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

/* Animación para las tarjetas */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.service-card {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }