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

body {
    background-color: #222521;
    color: #e5e5e0;
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.6;
}

.header-banner {
    text-align: center;
    padding: 80px 20px;
    background-color: #1a1c19;
    margin-bottom: 60px;
    width: 100%;
}

.titulo-principal {
    color: #ffffff;
    font-size: 3.2rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
    font-family: 'Arial Black', Gadget, sans-serif;
}

.subtitulo-banner {
    color: #dfb36c;
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.contenido-principal {
    width: 100%;
    padding: 0 20px;
}

#sobre-mi, #cursos, #proyectos, #compañeros, footer {
    max-width: 650px;
    margin: 0 auto 50px auto;
}

#sobre-mi, #cursos, #proyectos, #compañeros {
    background-color: #1a1c19;
    border: 1px solid #343933;
    border-radius: 8px;
    padding: 28px 32px;
}

h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 18px;
    color: #dfb36c;
}

p {
    margin-bottom: 14px;
}

.en-construccion {
    color: #929990;
}

section a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px dashed #929990;
    transition: color 0.2s ease;
}

section a:hover {
    color: #dfb36c;
}

footer {
    margin-top: 100px;
    padding-top: 25px;
    border-top: 1px dashed #343933;
    font-size: 0.85rem;
    color: #929990;
}

footer p {
    margin: 6px 0;
}

footer a {
    color: #e5e5e0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

footer a:hover {
    color: #dfb36c;
}