.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

.btn-primary {
  background: var(--color-charcoal);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-gold);
  color: var(--color-charcoal);
}

.btn-secondary {
  background: transparent;
  color: var(--color-charcoal);
  border-color: rgba(45, 45, 45, 0.22);
}

.btn-secondary:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn-light {
  background: var(--color-offwhite);
  color: var(--color-charcoal);
}

.btn-light:hover {
  background: var(--color-gold);
  color: var(--color-charcoal);
}

.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  min-height: 54px;
  padding: 0 22px;
  border: 1px solid rgba(214, 171, 120, 0.35);
  border-radius: 999px;
  background: var(--color-gold);
  color: var(--color-charcoal);
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 18px 40px rgba(45, 45, 45, 0.25);
  transition: var(--transition);
}

.whatsapp-float:hover {
  background: var(--color-offwhite);
  color: var(--color-charcoal);
}

.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(45, 45, 45, 0.16);
  border-radius: 999px;
  background: var(--color-offwhite);
  color: var(--color-charcoal);
  font-size: 1.35rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-nav {
  display: none;
}

.desktop-nav a {
  letter-spacing: 0.04em;
  font-weight: 500;
  color: var(--color-charcoal);
}

.info-card,
.stat-card,
.step-card,
.process-card,
.project-card,
.portfolio-card,
.contact-card {
  border: 1px solid #e3ddd6;
  border-radius: 16px;
  transition: 300ms ease;
}

.info-card:hover,
.stat-card:hover,
.step-card:hover,
.process-card:hover,
.project-card:hover,
.portfolio-card:hover,
.contact-card:hover {
  background: #f0ece7;
  transform: translateY(-2px);
}

.section-muted {
  background: var(--color-muted);
}

.section-divider {
  width: 120px;
  height: 1px;
  background: var(--color-line);
  margin: 0 auto 64px;
}

.final-cta {
  padding-top: 64px;
}

.section-dark .info-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(214, 171, 120, 0.18);
}

.section-dark .info-card:hover {
  background: rgba(255, 255, 255, 0.07);
}

.section-dark .info-card h3 {
  color: var(--color-gold);
}

.section-dark .info-card p {
  color: rgba(255, 255, 255, 0.75);
}

.site-footer {
  background: var(--color-charcoal);
  color: var(--color-offwhite);
  padding: 80px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer::before {
  content: "Produção Própria · João Pessoa/PB";
  display: block;
  color: var(--color-gold);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin: 0 auto 32px;
  width: min(100% - 32px, var(--container));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  display: inline-flex;
  width: 220px;
  margin-bottom: 24px;
}

.footer-brand img {
  width: 100%;
  height: auto;
  display: block;
}

.site-footer h3 {
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-gold);
  margin-bottom: 18px;
}

.site-footer a,
.site-footer button {
  display: block;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.78);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.site-footer a:hover,
.site-footer button:hover {
  color: var(--color-gold);
}

.site-footer p {
  color: rgba(255, 255, 255, 0.72);
}

.footer-bottom {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.btn-primary {
  transition: 0.25s ease;
}

.btn-primary:hover {
  background: #d6ab78;
  color: #2d2d2d;
}

.site-footer a,
.site-footer button,
.desktop-nav a {
  transition: 0.2s ease;
}

.site-footer a:hover,
.site-footer button:hover,
.desktop-nav a:hover {
  color: #c8a57a;
}