/* RESET */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', sans-serif;
}

/* ENCABEZADO */
.contenedor {
    position: sticky;
    top: 0;
    z-index: 50;
}

.encabezado {
    width: 100%;
    height: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0,0,0,0.9);
    border-bottom: 2px solid #1ceb25;
    gap: 15px;
}

.encabezado__titulo {
    font-size: 2rem;
    color: #fff;
}

.encabezado__contorno {
    color: #1ceb25;
    text-shadow: 0 0 10px #1ceb25;
}

.encabezado__botones {
    text-decoration: none;
    padding: 8px 15px;
    color: #fff;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.encabezado__botones:hover {
    background-color: #243a69;
    color: #1ceb25;
    box-shadow: 0 0 15px #1ceb25;
}

.boton--inicio {
    background-color: #1ceb25;
    color: #000;
    font-weight: bold;
}

/* HERO */
.hero {
    position: relative;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.hero__imagen {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url('https://media.revistagq.com/photos/5df0eb455d03ed0008b40c73/16:9/w_2560%2Cc_limit/motivacion%2520no%2520abandonar%2520gimnasio.jpg');
    background-size: cover;
    background-position: center;
    filter: brightness(0.5);
    z-index: 1;
}

.hero__texto {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #ffe900;
    animation: floatText 3s ease-in-out infinite;
}

.hero__texto h2 {
    font-size: 3rem;
    text-shadow: 0 0 20px #ffe900;
}

.hero__texto p {
    font-size: 1.2rem;
    color: #fff;
}

/* ANIMACIÓN */
@keyframes floatText {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* PLANES */
.planes {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 50px 20px;
    flex-wrap: wrap;
}

.plan {
    background-color: #000;
    color: #ffe900;
    width: 300px;
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 0 20px #ffe900;
    transition: transform 0.3s, box-shadow 0.3s;
}

.plan:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 40px #1ceb25;
}

.plan h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.plan p {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.precio {
    font-size: 2.5rem;
    font-weight: bold;
}

.precio span {
    font-size: 1rem;
}

/* BENEFICIOS */
.beneficios {
    background-color: #000;
    color: #fff;
    padding: 50px 20px;
    text-align: center;
}

.beneficios h2 {
    font-size: 2rem;
    color: #1ceb25;
    margin-bottom: 40px;
    text-shadow: 0 0 10px #1ceb25;
}

.beneficios__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
    gap: 30px;
    justify-items: center;
}

.beneficio {
    background-color: #111;
    padding: 20px;
    border-radius: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.beneficio:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 20px #1ceb25;
}

.beneficio img {
    height: 60px;
    margin-bottom: 15px;
}

.beneficio p {
    color: #fff;
    font-size: 1rem;
}

/* PIE */
.pie {
    background-color: #000;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

/* RESPONSIVE */
@media screen and (max-width: 768px) {
    .hero__texto h2 { font-size: 2rem; }
    .hero__texto p { font-size: 1rem; }
    .planes { flex-direction: column; align-items: center; }
}