/* Formula wrapper with copy button */
.formula-wrapper {
  position: relative;
  display: inline-block;
  width: 100%;
  margin: 1rem 0;
}

.formula-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease, background-color 0.2s ease;
  font-size: 14px;
  color: #555;
  z-index: 10;
}

.formula-wrapper:hover .formula-copy-btn {
  opacity: 1;
}

.formula-copy-btn:hover {
  background: rgba(240, 240, 240, 0.95);
  color: #000;
}

.formula-copy-btn:active {
  transform: scale(0.95);
}

.formula-copy-btn.copied {
  background: rgba(76, 175, 80, 0.9);
  color: white;
  border-color: #4caf50;
}

.formula-copy-btn i {
  pointer-events: none;
}

/* Ensure formula wrapper works with scrollable math */
.math-scrollable .formula-wrapper {
  display: block;
}