/* Highlight System Styles */
.highlight {
  position: relative;
  border-radius: 3px;
  padding: 0 2px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.highlight:hover {
  filter: brightness(1.2);
}

.highlight-yellow {
  background-color: rgba(255, 215, 0, 0.3);
  box-shadow: 0 0 2px rgba(255, 215, 0, 0.5);
}

.highlight-purple {
  background-color: rgba(111, 66, 193, 0.3);
  box-shadow: 0 0 2px rgba(111, 66, 193, 0.5);
}

.highlight-blue {
  background-color: rgba(0, 255, 255, 0.3);
  box-shadow: 0 0 2px rgba(0, 255, 255, 0.5);
}

.highlight-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark-bg);
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
  z-index: 90;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.highlight-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 0 25px rgba(255, 215, 0, 0.7);
}

.highlight-controls {
  position: fixed;
  bottom: 80px;
  right: 20px;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 90;
  transform: translateX(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.highlight-controls.active {
  transform: translateX(0);
  opacity: 1;
}

.highlight-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.highlight-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
}

.highlight-btn.yellow {
  background-color: rgba(255, 215, 0, 0.3);
}

.highlight-btn.purple {
  background-color: rgba(111, 66, 193, 0.3);
}

.highlight-btn.blue {
  background-color: rgba(0, 255, 255, 0.3);
}

/* Note System */
.note-indicator {
  display: inline-block;
  width: 18px;
  height: 18px;
  background: var(--primary-color);
  border-radius: 50%;
  margin-left: 5px;
  vertical-align: super;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  color: var(--dark-bg);
  cursor: pointer;
  transition: all 0.3s ease;
}

.note-indicator:hover {
  transform: scale(1.2);
  box-shadow: 0 0 10px var(--primary-color);
}

.note-popup {
  position: absolute;
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid var(--primary-color);
  border-radius: 10px;
  padding: 15px;
  width: 250px;
  z-index: 95;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.note-popup.active {
  opacity: 1;
  visibility: visible;
}

.note-content {
  color: var(--light-text);
  font-size: 14px;
  margin-bottom: 10px;
}

.note-edit {
  background: transparent;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  font-size: 12px;
  padding: 0;
  text-decoration: underline;
  transition: all 0.3s ease;
}

.note-edit:hover {
  color: #ffd700;
}