.annotation-toolbar {
  position: fixed;
  z-index: 10000;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--md-primary-fg-color, #526cfe);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  transform: translateX(-50%);
  animation: fadeIn 0.2s ease;
}

.annotation-toolbar.visible {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.annotation-colors {
  display: flex;
  gap: 4px;
  padding-right: 8px;
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}

.color-btn {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.2s ease;
}

.color-btn:hover {
  transform: scale(1.2);
}

.color-btn.active {
  border-color: white;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.color-yellow { background: #ffeb3b; }
.color-green { background: #a5d6a7; }
.color-blue { background: #90caf9; }
.color-pink { background: #f48fb1; }
.color-orange { background: #ffcc80; }

.annotation-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 32px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: all 0.2s ease;
  overflow: hidden;
  padding: 0 8px;
  white-space: nowrap;
}

.annotation-btn .btn-text {
  font-size: 12px;
  max-width: 0;
  opacity: 0;
  transition: all 0.2s ease;
  overflow: hidden;
}

.annotation-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  padding: 0 10px;
}

.annotation-btn:hover .btn-text {
  max-width: 50px;
  opacity: 1;
  margin-left: 4px;
}

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

.annotation-highlight {
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s ease;
}

.annotation-highlight:hover {
  filter: brightness(0.9);
}

.annotation-highlight.color-yellow { background: rgba(255, 235, 59, 0.5); }
.annotation-highlight.color-green { background: rgba(165, 214, 167, 0.5); }
.annotation-highlight.color-blue { background: rgba(144, 202, 249, 0.5); }
.annotation-highlight.color-pink { background: rgba(244, 143, 177, 0.5); }
.annotation-highlight.color-orange { background: rgba(255, 204, 128, 0.5); }

.annotation-highlight.has-note {
  border-bottom: 2px dashed currentColor;
}

.annotation-highlight.flash {
  animation: flash 1s ease;
}

@keyframes flash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.annotation-popup {
  position: absolute;
  z-index: 10001;
  min-width: 200px;
  max-width: 350px;
  padding: 12px;
  background: var(--md-default-bg-color, #fff);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  animation: fadeIn 0.2s ease;
}

[data-md-color-scheme="slate"] .annotation-popup {
  background: var(--md-default-bg-color, #1a1a2e);
}

.popup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.popup-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.popup-text {
  font-size: 13px;
  color: var(--md-default-fg-color, #333);
  font-style: italic;
}

.popup-note {
  padding: 8px;
  margin: 8px 0;
  background: var(--md-code-bg-color, #f5f5f5);
  border-radius: 4px;
  font-size: 13px;
  white-space: pre-wrap;
}

.popup-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--md-default-fg-color--light, #eee);
}

.popup-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--md-default-fg-color--light, #ddd);
  border-radius: 4px;
  color: var(--md-default-fg-color, #666);
  cursor: pointer;
  transition: all 0.2s ease;
}

.popup-actions button:hover {
  background: var(--md-primary-fg-color, #526cfe);
  border-color: var(--md-primary-fg-color, #526cfe);
  color: white;
}

.annotation-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10002;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.2s ease;
}

.annotation-dialog {
  width: 90%;
  max-width: 400px;
  padding: 20px;
  background: var(--md-default-bg-color, #fff);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

[data-md-color-scheme="slate"] .annotation-dialog {
  background: var(--md-default-bg-color, #1a1a2e);
}

.annotation-dialog h3 {
  margin: 0 0 16px;
  font-size: 18px;
  color: var(--md-default-fg-color, #333);
}

.annotation-dialog textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--md-default-fg-color--light, #ddd);
  border-radius: 6px;
  font-size: 14px;
  resize: vertical;
  background: var(--md-default-bg-color, #fff);
  color: var(--md-default-fg-color, #333);
  font-family: inherit;
}

.annotation-dialog textarea:focus {
  outline: none;
  border-color: var(--md-primary-fg-color, #526cfe);
}

.dialog-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.dialog-buttons button {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cancel-btn {
  background: var(--md-default-fg-color--light, #eee);
  color: var(--md-default-fg-color, #666);
}

.cancel-btn:hover {
  background: var(--md-default-fg-color--lighter, #ddd);
}

.save-btn {
  background: var(--md-primary-fg-color, #526cfe);
  color: white;
}

.save-btn:hover {
  background: var(--md-primary-fg-color--dark, #4157fe);
}

.annotation-auth-btn {
  position: fixed;
  bottom: 140px;
  right: 20px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px;
  background: var(--md-accent-fg-color, #e91e63);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  overflow: hidden;
  width: 32px;
  white-space: nowrap;
}

.annotation-auth-btn .user-name {
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.annotation-auth-btn:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
  border-radius: 20px;
  width: auto;
  padding: 8px 12px;
}

.annotation-auth-btn:hover .user-name {
  opacity: 1;
}

.annotation-list-btn {
  position: fixed;
  bottom: 180px;
  right: 20px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px;
  background: var(--md-primary-fg-color, #526cfe);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  overflow: hidden;
  width: 32px;
  white-space: nowrap;
}

.annotation-list-btn span {
  opacity: 0;
  transition: opacity 0.2s ease;
}

.annotation-list-btn:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
  border-radius: 20px;
  width: auto;
  padding: 8px 12px;
}

.annotation-list-btn:hover span {
  opacity: 1;
}

.annotation-list-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 350px;
  max-width: 90vw;
  z-index: 10003;
  display: flex;
  flex-direction: column;
  background: var(--md-default-bg-color, #fff);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s ease;
}

[data-md-color-scheme="slate"] .annotation-list-panel {
  background: var(--md-default-bg-color, #1a1a2e);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-default-fg-color--light, #eee);
}

.panel-header h3 {
  margin: 0;
  font-size: 16px;
  color: var(--md-default-fg-color, #333);
}

.close-btn {
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  font-size: 20px;
  color: var(--md-default-fg-color, #666);
  cursor: pointer;
  border-radius: 4px;
}

.close-btn:hover {
  background: var(--md-default-fg-color--light, #eee);
}

.panel-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.panel-content .empty {
  text-align: center;
  color: var(--md-default-fg-color--light, #999);
  padding: 40px 20px;
}

.annotation-item {
  padding: 12px;
  margin-bottom: 8px;
  background: var(--md-code-bg-color, #f5f5f5);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.annotation-item:hover {
  background: var(--md-primary-fg-color--light, #e8ebff);
}

.item-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.item-color {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.item-page {
  font-size: 12px;
  color: var(--md-default-fg-color--light, #999);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item-text {
  font-size: 13px;
  color: var(--md-default-fg-color, #333);
  line-height: 1.5;
}

.item-note {
  margin-top: 8px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 4px;
  font-size: 12px;
  color: var(--md-default-fg-color--light, #666);
  white-space: pre-wrap;
}

@media screen and (max-width: 768px) {
  .annotation-toolbar {
    padding: 6px 10px;
  }

  .color-btn {
    width: 18px;
    height: 18px;
  }

  .annotation-btn {
    height: 28px;
    padding: 0 6px;
  }

  .annotation-btn:hover {
    padding: 0 8px;
  }

  .annotation-btn .btn-text {
    font-size: 11px;
  }

  .annotation-auth-btn,
  .annotation-list-btn {
    right: 10px;
    padding: 6px;
    font-size: 11px;
    width: 28px;
  }

  .annotation-auth-btn:hover,
  .annotation-list-btn:hover {
    padding: 6px 10px;
  }

  .annotation-auth-btn {
    bottom: 110px;
  }

  .annotation-list-btn {
    bottom: 145px;
  }

  .annotation-list-panel {
    width: 100%;
  }
}

[data-md-color-scheme="slate"] .annotation-toolbar {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

[data-md-color-scheme="slate"] .annotation-popup {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

[data-md-color-scheme="slate"] .annotation-item {
  background: rgba(255, 255, 255, 0.05);
}

[data-md-color-scheme="slate"] .annotation-item:hover {
  background: rgba(82, 108, 254, 0.2);
}

[data-md-color-scheme="slate"] .item-note {
  background: rgba(255, 255, 255, 0.05);
}