*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  min-height: 100dvh;
  background-color: #3d4c39;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  color: #f4efe4;
}

.page {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 5vw, 3rem);
}

.logo {
  display: block;
  width: min(82vw, 520px);
  height: auto;
  max-height: 70dvh;
  object-fit: contain;
}

.whatsapp {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.55);
  animation: pulse 2s ease-out infinite;
  pointer-events: none;
}

.whatsapp i {
  font-size: 2rem;
  line-height: 1;
}

.whatsapp:hover,
.whatsapp:focus-visible {
  transform: scale(1.08);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.whatsapp:focus-visible {
  outline: 3px solid #f4efe4;
  outline-offset: 4px;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.55);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

@media (max-width: 480px) {
  .whatsapp {
    width: 54px;
    height: 54px;
  }

  .whatsapp i {
    font-size: 1.75rem;
  }
}