html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
}

h1, h2, h3, .font-display {
  font-family: 'Oswald', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 30px -8px rgba(37, 211, 102, 0.6);
  transform: translateY(90px);
  opacity: 0;
  transition: transform 0.4s, opacity 0.4s, box-shadow 0.25s;
}

.wa-float.show {
  transform: translateY(0);
  opacity: 1;
}

.wa-float:hover {
  box-shadow: 0 16px 36px -8px rgba(37, 211, 102, 0.8);
}

.wa-float::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #25d366;
  animation: wa-pulse 2.4s ease-out infinite;
}

@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.6); opacity: 0; }
}

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