.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 250px;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-primary:hover { box-shadow: var(--shadow-hover); }

.btn-call {
  background: var(--color-navy);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-call:hover {
  background: var(--color-navy-light);
  box-shadow: 0 16px 48px rgba(11, 45, 91, 0.25);
}
.btn-call::before {
  content: '\f095';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
}

.btn-whatsapp {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-whatsapp:hover {
  background: var(--color-accent-dark);
  box-shadow: 0 16px 48px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp::before {
  content: '\f232';
  font-family: 'Font Awesome 6 Brands';
  font-weight: 400;
}

/* Floating WhatsApp button */
.whatsapp-float {
  position: fixed;
  bottom: 90px;   /* above sticky bar on mobile */
  right: 20px;
  z-index: 200;
  background: var(--color-accent);
  color: #fff;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: whatsapp-pulse 2.4s ease-in-out infinite;
}
.whatsapp-float::before {
  content: '\f232';
  font-family: 'Font Awesome 6 Brands';
  font-weight: 400;
  font-size: 1.7rem;
  line-height: 1;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 16px 48px rgba(37, 211, 102, 0.35);
  animation-play-state: paused;
}
.whatsapp-float span { display: none; } /* icon only on desktop */

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: var(--shadow-lg), 0 0 0 0 rgba(37, 211, 102, 0.45); }
  50%      { box-shadow: var(--shadow-lg), 0 0 0 10px rgba(37, 211, 102, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .whatsapp-float { animation: none; }
}

@media (max-width: 768px) {
  .whatsapp-float { bottom: 75px; }
}