* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

:root {
    --azul-principal: #1e3a5f;
    --azul-claro: #2e5c8a;
    --blanco: #ffffff;
    --gris-claro: #ebebeb;
    --azul-secundario: #05294b;
}

.separador {
    width: 60%;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--azul-principal), transparent);
    margin: 0 auto;
}

section {
    padding: 80px 20px;
    scroll-margin-top: 90px;
}

section:nth-of-type(even) {
    background-color: var(--gris-claro);
}

h2{
    font-size: 2rem;
    color: var(--azul-principal);
}

a {
    color: white;
    text-decoration: none;
}

/* BOTON FLOTANTE */
.btn-flotante {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--azul-secundario);
    color: white;
    padding: 16px 22px;
    border-radius: 28px;
    text-decoration: none;
    box-shadow: 0 6px 18px rgba(0,0,0,0.25);
    z-index: 1000;

    width: min(380px, calc(100% - 40px));
    text-align: center;

    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    line-height: 1.4;

    opacity: 0;
    animation: aparecer 0.6s ease-out forwards;

    transition: scale 0.25s ease, translate 0.25s ease, box-shadow 0.25s ease;
}

.btn-flotante:hover {
    translate: 0 -4px;
    scale: 1.04;
    box-shadow: 0 10px 24px rgba(0,0,0,0.35);
}

.btn-flotante:active {
    scale: 0.98;
}

@keyframes aparecer {
    from {
        opacity: 0;
        translate: 0 30px;
    }

    to {
        opacity: 1;
        translate: 0 0;
    }
}

/* TABLET */
@media (max-width: 1100px) {
    .btn-flotante {
        bottom: 18px;
        right: 18px;
        padding: 14px 20px;
    }
}

/* MOBILE */
@media (max-width: 768px) {
    .btn-flotante {
        width: calc(100% - 32px);
        right: 16px;
        left: 16px;
        bottom: 16px;

        font-size: 0.95rem;
        padding: 14px 16px;
        border-radius: 18px;
    }
}

/* MOBILE CHICO */
@media (max-width: 420px) {
    .btn-flotante {
        font-size: 0.9rem;
        padding: 12px 14px;
        line-height: 1.35;
    }
}

/* MUY CHICO */
@media (max-width: 340px) {
    .btn-flotante {
        font-size: 0.85rem;
    }
}