/* =========================
   RESET & BASE
========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

html, body {
    height: 100%;
}

/* TIPOGRAFÍA BASE */
h1 {
    font-size: 2.4rem;
    margin-bottom: 15px;
}

p {
    font-size: 1.15rem;
    margin-bottom: 38px;
}

/* =========================
   ANIMACIONES GLOBALES
========================== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================
   BODY – TEMA OSCURO BASE
========================== */
body {
    background: #0f0f0f;
    color: #fff;
    line-height: 1.7;
}

/* =========================
   CONTENEDOR GENÉRICO
========================== */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 60px 20px;
}

/* =========================
   BOTÓN BASE (CTA verde)
========================== */
.btn {
    background: #25D366;
    color: #000;
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    transition: transform .3s ease, box-shadow .3s ease;
}

.btn:hover {
    transform: scale(1.06);
    box-shadow: 0 12px 30px rgba(37, 211, 102, .45);
}

/* =========================
   FOOTER BASE
========================== */
footer {
    background: #000;
    text-align: center;
    padding: 40px 20px;
    color: #fff;
    font-size: .9rem;
}

footer .footer-copy {
    color: #aaa;
    margin-bottom: 10px;
}

footer .footer-dev {
    font-size: .78rem;
    color: #555;
    letter-spacing: .03em;
}

footer .footer-dev a {
    color: #888;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color .25s, border-color .25s;
}

footer .footer-dev a:hover {
    color: #fff;
    border-bottom-color: #fff;
}

/* =========================
   TIPOGRAFÍA COMPARTIDA
========================== */
h2,
h3 {
    text-align: center;
}