/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1000;
  width: 46px;
  height: 46px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #0a7a3b;
  color: #fff;
  font-size: 22px;
  line-height: 46px;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: #095e2e;
}

/* Floating banners */
.floating-banner {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  max-width: 160px;
}

.floating-banner--left {
  left: 12px;
}

.floating-banner--right {
  right: 12px;
}

.floating-banner img {
  display: block;
  height: auto;
  max-width: 100%;
}

/* An banner khi khong du cho hai ben (tranh de len noi dung) */
@media (max-width: 1599px) {
  .floating-banner {
    display: none;
  }
}