* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: sans-serif;
}
:root {
    --bg-color: #f3f1f1;
    --second-bg-color: #dee5ee;
    --text-color: #1e2a38;
    --main-color: #3a6ea5;
}
html {
    font-size: 62.5%;
    overflow-x: hidden;
}
body {
    background: var(--bg-color);
    color: var(--text-color);
}
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 4rem 12%;
    background: rgba(58, 110, 165, 0.1); 
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}
.logo {
    font-size: 2.2rem;
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s ease;
}
.logo:hover {
    transform: scale(1.1);
}
.logo span {
    color: var(--main-color);
    text-shadow: 0 0 25px var(--main-color);
}
.navbar a {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-left: 4rem;
    font-weight: 500;
    transition: 0.3s ease;
    border-bottom: 3px solid transparent;
}
.navbar a:hover,
.navbar a.active {
    color: var(--main-color);
    border-bottom: 3px solid var(--main-color);
}
#menu-icon {
    font-size: 3.6rem;
    color: var(--main-color);
    display: none;
}

section {
    min-height: 90vh;
    padding: 12rem 5% 5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.home-img img {
    width: 230px;
    height: 230px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    margin-bottom: 3rem;
    transition: 0.3s ease-in-out;
}
.home-img img:hover {
    transform: scale(1.05);
}
.home-content h1 {
    font-size: 5rem;
    font-weight: 700;
}
.home-content p {
    font-size: 1.6rem;
    line-height: 1.7;
    max-width: 700px;
    margin-top: 1.5rem;
}
span {
    color: var(--main-color);
}
.social-icons {
    margin-top: 2rem;
}
.social-icons a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4rem;
    height: 4rem;
    background: transparent;
    border: 1.5px solid var(--main-color);
    font-size: 2rem;
    border-radius: 50%;
    color: var(--main-color);
    margin: 1.5rem 1rem 0 0;
    transition: 0.3s ease;
}
.social-icons a:hover {
    background-color: var(--main-color);
    color: #fff;
    transform: translateY(-4px);
}

.cursos {
    background: var(--second-bg-color);
    color: var(--text-color);
    padding: 12rem 5% 5rem;
    text-align: center;
}
.heading {
    text-align: center;
    font-size: 6rem; 
    color: var(--text-color);
}
.cursos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columnas fijas */
    gap: 3rem;
    margin-top: 5rem;
}
.curso-card {
    background: #fff;
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}
.curso-card:hover {
    transform: translateY(-5px);
}
.curso-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--main-color);
}
.profesor {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}
.profesor img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.info-prof {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.info-prof p {
    font-size: 1.7rem;
    font-weight: 500;
}
.info-prof a {
    color: var(--main-color);
    font-size: 1.8rem;
    transition: 0.2s ease;
}
.info-prof a:hover {
    color: #1e2a38;
}
.linkedin-icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 3.2rem;
    height: 3.2rem;
    background: transparent;
    border: 1.5px solid var(--main-color);
    font-size: 1.8rem;
    border-radius: 50%;
    color: var(--main-color);
    transition: 0.3s ease;
    margin-top: 0.5rem;
}

.linkedin-icon:hover {
    background-color: var(--main-color);
    color: #fff;
    transform: scale(1.1) translateY(-2px);
}

@media (max-width: 960px) {
    .cursos-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas en tablet */
    }
}
@media (max-width: 600px) {
    .cursos-grid {
        grid-template-columns: 1fr; /* 1 curso por fila en móvil */
    }
}

.compañeros {
    background: var(--bg-color);
    color: var(--text-color);
    padding: 12rem 5% 5rem;
    text-align: center;
}

.compañeros-list {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    max-width: 700px;
    margin: 5rem auto 0;
    width: 100%;
}

.compañero-card {
    background: var(--second-bg-color);
    border-radius: 1.5rem;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.04);
    transition: 0.2s ease-in-out;
}

.compañero-card:hover {
    transform: scale(1.01);
}

.nombre-comp {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--main-color);
}

.visit-btn {
    background-color: var(--main-color);
    color: #fff;
    padding: 0.7rem 1.4rem;
    border-radius: 1rem;
    font-size: 1.4rem;
    transition: background-color 0.3s ease;
}

.visit-btn:hover {
    background-color: #2e5c8a;
}