/* --- BACK TO TOP --- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow:
        0 0 0 4px white,
        0 0 0 5px var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    cursor: pointer;
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.25s ease, transform 0.25s ease, color 0.2s, background 0.2s;
}
.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.back-to-top:hover {
    color: var(--text);
    background: #f3f4f6;
}

/* --- FOOTER --- */
.footer { background: transparent; color: var(--text); padding: 2rem 0; }
.footer-content {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 1.5rem; border-bottom: 1px solid var(--border);
    margin-bottom: 1.25rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.75rem; font-weight: 700; font-size: 1.125rem; color: var(--text); text-decoration: none; }
.footer-links { display: flex; gap: 0.25rem; }
.footer-links a {
    color: var(--text-light); text-decoration: none; font-weight: 500; font-size: 0.9375rem;
    padding: 0.375rem 0.75rem; border-radius: 0.5rem; transition: all 0.2s ease-in-out;
}
.footer-links a:hover { color: var(--text); background: #f3f4f6; }
.footer-bottom { text-align: center; color: var(--text-light); font-size: 0.875rem; display: flex; flex-direction: column; align-items: center; gap: 0.75rem; }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .hero .container { display: block; }
    .hero h1 { font-size: 2.5rem; margin-top: 2rem;}
    .cta-group { flex-direction: column; align-items: center; }
    .btn-large { justify-content: center; width: 100%; }
    .btn-wa-icon { width: 58px; }
    .pricing-grid, .process-timeline, .contact-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .burger-menu { display: flex; }
    .footer-content { flex-direction: column; gap: 1.5rem; text-align: center; }
    .footer-links { flex-wrap: wrap; justify-content: center; }
}