#bk-save-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  background: var(--dark-main-color);
  color: var(--background);
  border: none;
  cursor: pointer;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: width 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), border-radius 0.35s ease;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  white-space: nowrap;
  padding: 0;
}
 
#bk-save-btn svg {
  flex-shrink: 0;
  margin-left: 0;
  transition: margin-left 0.35s ease;
}
 
#bk-save-btn.expanded {
  width: 210px;
  border-radius: 26px;
}
 
#bk-save-btn.expanded svg {
  margin-left: 16px;
}
 
#bk-save-btn-label {
  font-family: "Poppins", sans-serif;
  color: var(--background);
  overflow: hidden;
  max-width: 0;
  opacity: 0;
  transition: max-width 0.35s ease, opacity 0.25s ease;
  font-size: 14px;
  margin-left: 0;
}
 
#bk-save-btn.expanded #bk-save-btn-label {
  max-width: 140px;
  opacity: 1;
  margin-left: 10px;
  margin-right: 16px;
}
 
#bk-ribbon {
  position: fixed;
  right: 0;
  width: 60px;
  height: 20px;
  background: var(--dark-main-color);
  clip-path: polygon(0 50%, 17% 0, 100% 0, 100% 100%, 17% 100%);
  box-shadow: -2px 2px 10px rgba(0, 0, 0, 0.22);
  pointer-events: none;
  z-index: 150;
  transform: translateX(100%);
  transition: transform 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
}
 
#bk-ribbon.visible {
  transform: translateX(0);
}