:root {
    --primary-color: #007bff; /* Azul vibrante */
    --background-color: #1a1a1a; /* Fondo oscuro */
    --text-color: #f0f0f0; /* Texto claro */
    --secondary-bg: #2a2a2a; /* Fondo secundario */
    --border-color: #3a3a3a;
    --font-family: 'Arial', sans-serif;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    scroll-behavior: smooth;
}

/* Contenedor central (simil javiervmc.com) */
.content-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

/* Encabezado y Navegación */
header {
    background: var(--secondary-bg);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: center;
    padding: 15px 0;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    margin: 0 15px;
    font-size: 1rem;
    padding: 5px 0;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--primary-color);
}

/* HERO Section (Inicio) */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    text-align: left;
    padding-top: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.hero h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero p {
    max-width: 600px;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.social-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-right: 20px;
    font-size: 1.1rem;
    transition: color 0.3s;
}

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

/* Secciones Generales */
section {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    margin-bottom: 30px;
    color: #aaa;
}

/* Habilidades (Skills) */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    text-align: left;
}

.skills-grid div {
    background: var(--secondary-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

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

.skills-grid ul {
    list-style: none;
}

.skills-grid li {
    padding: 8px 0;
    border-bottom: 1px dashed var(--border-color);
}

.skills-grid li:last-child {
    border-bottom: none;
}

/* Proyectos */
.project-card {
    background: var(--secondary-bg);
    padding: 25px;
    margin-bottom: 20px;
    border-radius: 8px;
    border-left: 5px solid var(--primary-color);
}

.project-card h3 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.tag {
    display: inline-block;
    background: #004b9c;
    color: #fff;
    padding: 5px 10px;
    margin-right: 5px;
    margin-top: 10px;
    border-radius: 3px;
    font-size: 0.8rem;
}

/* Pie de Página */
footer {
    text-align: center;
    padding: 30px 0;
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

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