styles.css

#chat-anchors-panel,
#chat-anchors-panel * {
  box-sizing: border-box;
}

#chat-anchors-panel,
#chat-anchors-edge-layer {
  --anchor-edge-size: 28px;
  --anchor-edge-gap: 8px;
}

#chat-anchors-panel,
#chat-anchors-edge-layer,
.chat-anchors-tooltip {
  --anchor-bg: rgba(22, 22, 22, 0.94);
  --anchor-border: rgba(255, 255, 255, 0.08);
  --anchor-text: #e0e0e0;
  --anchor-text-dim: #777;
  --anchor-text-strong: #fff;
  --anchor-text-subtle: #bbb;
  --anchor-subtitle-bg: rgba(255, 255, 255, 0.08);
  --anchor-panel-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 0, 0, 0.2);
  --anchor-dim-bg: rgba(20, 20, 20, 0.05);
  --anchor-item-bg: rgba(255, 255, 255, 0.02);
  --anchor-item-hover-bg: rgba(255, 255, 255, 0.06);
  --anchor-item-active-bg: rgba(255, 255, 255, 0.12);
  --anchor-item-active-border: rgba(255, 255, 255, 0.15);
  --anchor-item-active-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  --anchor-item-selected-border: rgba(255, 255, 255, 0.48);
  --anchor-index-bg: rgba(255, 255, 255, 0.04);
  --anchor-index-active-bg: rgba(0, 0, 0, 0.6);
  --anchor-action-hover-bg: rgba(255, 255, 255, 0.15);
  --anchor-hidden-toggle-border: rgba(255, 255, 255, 0.25);
  --anchor-hidden-toggle-hover-border: rgba(255, 255, 255, 0.5);
  --anchor-scrollbar-thumb: #444;
  --anchor-edge-bg: rgba(18, 18, 18, 0.88);
  --anchor-edge-border: rgba(255, 255, 255, 0.18);
  --anchor-edge-text: #fff;
  --anchor-edge-hover-bg: rgba(255, 255, 255, 0.2);
  --anchor-tooltip-bg: rgba(0, 0, 0, 0.85);
  --anchor-tooltip-border: rgba(255, 255, 255, 0.1);
  --anchor-tooltip-text: #f0f0f0;
  --anchor-tooltip-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

#chat-anchors-panel[data-theme="light"],
#chat-anchors-edge-layer[data-theme="light"],
.chat-anchors-tooltip[data-theme="light"] {
  --anchor-bg: rgba(250, 250, 250, 0.96);
  --anchor-border: rgba(0, 0, 0, 0.08);
  --anchor-text: #1d1d1f;
  --anchor-text-dim: #6b6b6b;
  --anchor-text-strong: #111;
  --anchor-text-subtle: #333;
  --anchor-subtitle-bg: rgba(0, 0, 0, 0.06);
  --anchor-panel-shadow: 0 12px 28px rgba(0, 0, 0, 0.14), 0 0 0 1px rgba(0, 0, 0, 0.08);
  --anchor-dim-bg: rgba(255, 255, 255, 0.45);
  --anchor-item-bg: rgba(0, 0, 0, 0.04);
  --anchor-item-hover-bg: rgba(0, 0, 0, 0.08);
  --anchor-item-active-bg: rgba(0, 0, 0, 0.12);
  --anchor-item-active-border: rgba(0, 0, 0, 0.18);
  --anchor-item-active-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  --anchor-item-selected-border: rgba(255, 255, 255, 0.48);
  --anchor-index-bg: rgba(0, 0, 0, 0.06);
  --anchor-index-active-bg: rgba(255, 255, 255, 0.7);
  --anchor-action-hover-bg: rgba(0, 0, 0, 0.08);
  --anchor-hidden-toggle-border: rgba(0, 0, 0, 0.18);
  --anchor-hidden-toggle-hover-border: rgba(0, 0, 0, 0.3);
  --anchor-scrollbar-thumb: rgba(0, 0, 0, 0.35);
  --anchor-edge-bg: rgba(250, 250, 250, 0.95);
  --anchor-edge-border: rgba(0, 0, 0, 0.12);
  --anchor-edge-text: #111;
  --anchor-edge-hover-bg: rgba(0, 0, 0, 0.08);
  --anchor-tooltip-bg: rgba(255, 255, 255, 0.96);
  --anchor-tooltip-border: rgba(0, 0, 0, 0.1);
  --anchor-tooltip-text: #111;
  --anchor-tooltip-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
}

#chat-anchors-edge-layer,
#chat-anchors-edge-layer * {
  box-sizing: border-box;
}

#chat-anchors-panel {
  --anchor-item-h: 40px;
  --anchor-item-height: var(--anchor-item-h);
  --anchor-item-gap: 6px;
  --anchor-wheel-padding: 40px;
  position: fixed;
  right: 20px;
  top: 100px;
  width: 240px;
  height: 320px;

  resize: both;
  overflow: hidden;
  min-width: 180px;
  max-width: 500px;
  min-height: 220px;
  max-height: 85vh;

  display: flex;
  flex-direction: column;

  z-index: 99990;
  border-radius: 18px;
  background: var(--anchor-bg);
  border: 1px solid var(--anchor-border);
  backdrop-filter: blur(16px);
  box-shadow: var(--anchor-panel-shadow);
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--anchor-text);

  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s, left 0.28s ease, top 0.28s ease;
}

#chat-anchors-panel[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

#chat-anchors-panel.is-dimmed {
  background: var(--anchor-dim-bg);
  border-color: transparent;
  box-shadow: none;
  backdrop-filter: none;
  resize: none;
}

#chat-anchors-panel.is-dimmed > *:not(.chat-anchors-list-wrap) {
  opacity: 0;
  pointer-events: none;
}

#chat-anchors-panel[data-dragging="true"] {
  transition: none;
}

#chat-anchors-edge-layer {
  position: fixed;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  z-index: 99991;
  pointer-events: none;
  overflow: visible;
  transition: left 0.28s ease, top 0.28s ease, width 0.28s ease, height 0.28s ease;
}

#chat-anchors-edge-layer[data-dragging="true"] {
  transition: none;
}

#chat-anchors-panel[data-collapsed="true"] {
  background: transparent;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  resize: none;
  pointer-events: none;
}

#chat-anchors-panel[data-collapsed="true"] > * {
  opacity: 0;
  pointer-events: none;
}

#chat-anchors-panel .chat-anchors-edge-hide,
#chat-anchors-panel .chat-anchors-edge-show {
  display: none !important;
}

.chat-anchors-header {
  padding: 14px 16px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: grab;
  flex-shrink: 0;
}

.chat-anchors-header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-anchors-theme-toggle {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  border: 1px solid var(--anchor-border);
  background: transparent;
  color: var(--anchor-text-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.chat-anchors-theme-toggle:hover {
  background: var(--anchor-item-hover-bg);
  color: var(--anchor-text-strong);
  border-color: var(--anchor-item-active-border);
}

.chat-anchors-theme-toggle:active {
  transform: scale(0.96);
}

.chat-anchors-theme-icon {
  width: 14px;
  height: 14px;
  display: none;
}

#chat-anchors-panel[data-theme="dark"] .chat-anchors-theme-icon.is-dark,
#chat-anchors-panel[data-theme="light"] .chat-anchors-theme-icon.is-light {
  display: block;
}

#chat-anchors-panel[data-dragging="true"] .chat-anchors-header {
  cursor: grabbing;
}

.chat-anchors-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--anchor-text-strong);
  white-space: nowrap;
}

.chat-anchors-subtitle {
  font-size: 11px;
  color: var(--anchor-text-dim);
  background: var(--anchor-subtitle-bg);
  padding: 2px 8px;
  border-radius: 12px;
}

.chat-anchors-list-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  margin-bottom: 4px;
  mask-image: linear-gradient(to bottom, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, black 10%, black 90%, transparent);
}

.chat-anchors-list {
  height: 100%;
  overflow-y: scroll;
  scrollbar-width: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  perspective: 600px;
  padding: 0;
}

.chat-anchors-list::-webkit-scrollbar {
  display: none;
}

.chat-anchors-list::before,
.chat-anchors-list::after {
  content: '';
  display: block;
  flex-shrink: 0;
  width: 100%;
  height: var(--anchor-wheel-padding);
}

.chat-anchors-center {
  display: none;
}

.chat-anchors-item {
  flex-shrink: 0;
  width: 92%;
  height: var(--anchor-item-h);
  margin: 3px 0;
  padding: 0 12px;

  display: flex;
  align-items: center;
  gap: 10px;

  background: var(--anchor-item-bg);
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  user-select: none;

  transition: transform 0.1s linear, opacity 0.1s linear, background 0.2s;
  will-change: transform, opacity;
}

.chat-anchors-item.is-center {
  background: var(--anchor-item-active-bg);
  border-color: var(--anchor-item-active-border);
  box-shadow: var(--anchor-item-active-shadow);
}

.chat-anchors-item.is-selected {
  border-color: var(--anchor-item-selected-border);
}

.chat-anchors-item.is-center .chat-anchors-text {
  color: var(--anchor-text-strong);
  font-weight: 500;
}

.chat-anchors-item.is-center .chat-anchors-index {
  color: var(--anchor-text-strong);
  background: var(--anchor-index-active-bg);
}

.chat-anchors-item:hover {
  background: var(--anchor-item-hover-bg);
}

.chat-anchors-item.is-hidden {
  opacity: 0.6;
}

.chat-anchors-index {
  font-size: 11px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--anchor-index-bg);
  border-radius: 6px;
  color: var(--anchor-text-dim);
  flex-shrink: 0;
}

.chat-anchors-text {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--anchor-text-subtle);
}

.chat-anchors-action {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--anchor-text-dim);
  border-radius: 8px;
  cursor: pointer;
  opacity: 0.2;
  transition: all 0.2s;
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 700;
}

.chat-anchors-item:hover .chat-anchors-action {
  opacity: 1;
}

.chat-anchors-action:hover {
  background: var(--anchor-action-hover-bg);
  color: var(--anchor-text-strong);
}

.chat-anchors-hidden-toggle {
  background: transparent;
  border: none;
  border-top: 1px dashed var(--anchor-hidden-toggle-border);
  color: var(--anchor-text-dim);
  font-size: 11px;
  width: 100%;
  padding: 10px 0 6px 0;
  cursor: pointer;
  margin-bottom: 4px;
  transition: color 0.2s, border-color 0.2s;
}

.chat-anchors-hidden-toggle:hover {
  color: var(--anchor-text-strong);
  border-color: var(--anchor-hidden-toggle-hover-border);
}

.chat-anchors-hidden-list[hidden] {
  display: none !important;
}

.chat-anchors-hidden-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
  max-height: 120px;
  padding-right: 2px;
}

.chat-anchors-hidden-list::-webkit-scrollbar {
  width: 4px;
}

.chat-anchors-hidden-list::-webkit-scrollbar-thumb {
  background: var(--anchor-scrollbar-thumb);
  border-radius: 2px;
}

.chat-anchors-hidden-list .chat-anchors-item {
  width: 100%;
  height: 32px;
  opacity: 0.6;
  transform: none !important;
}

#chat-anchors-edge-layer .chat-anchors-edge-hide,
#chat-anchors-edge-layer .chat-anchors-edge-show {
  position: absolute;
  width: var(--anchor-edge-size);
  height: var(--anchor-edge-size);
  border-radius: 999px;
  border: 1px solid var(--anchor-edge-border);
  background: var(--anchor-edge-bg);
  color: var(--anchor-edge-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
  z-index: 2;
}

#chat-anchors-edge-layer .chat-anchors-edge-hide,
#chat-anchors-edge-layer .chat-anchors-edge-show {
  --edge-rotation: 0deg;
}

#chat-anchors-edge-layer .chat-anchors-edge-icon {
  width: 14px;
  height: 14px;
  display: block;
  transform: rotate(var(--edge-rotation));
  transform-origin: 50% 50%;
  transition: transform 0.2s ease;
}

#chat-anchors-edge-layer .chat-anchors-edge-hide:hover,
#chat-anchors-edge-layer .chat-anchors-edge-show:hover {
  background: var(--anchor-edge-hover-bg);
}

#chat-anchors-edge-layer[data-edge="right"] .chat-anchors-edge-hide {
  left: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  top: 50%;
  transform: translateY(-50%) translateX(6px) scale(0.95);
}

#chat-anchors-edge-layer[data-collapsed-edge="right"] .chat-anchors-edge-show {
  left: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  top: 50%;
  transform: translateY(-50%) scale(0.95);
}

#chat-anchors-edge-layer[data-edge="left"] .chat-anchors-edge-hide {
  right: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  top: 50%;
  transform: translateY(-50%) translateX(-6px) scale(0.95);
}

#chat-anchors-edge-layer[data-collapsed-edge="left"] .chat-anchors-edge-show {
  right: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  top: 50%;
  transform: translateY(-50%) scale(0.95);
}

#chat-anchors-edge-layer[data-edge="top"] .chat-anchors-edge-hide {
  left: 50%;
  top: calc(100% + var(--anchor-edge-gap));
  transform: translateX(-50%) translateY(-6px) scale(0.95);
}

#chat-anchors-edge-layer[data-collapsed-edge="top"] .chat-anchors-edge-show {
  left: 50%;
  top: calc(100% + var(--anchor-edge-gap));
  transform: translateX(-50%) scale(0.95);
}

#chat-anchors-edge-layer[data-edge="bottom"] .chat-anchors-edge-hide {
  left: 50%;
  top: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  transform: translateX(-50%) translateY(6px) scale(0.95);
}

#chat-anchors-edge-layer[data-collapsed-edge="bottom"] .chat-anchors-edge-show {
  left: 50%;
  top: calc(-1 * (var(--anchor-edge-size) + var(--anchor-edge-gap)));
  transform: translateX(-50%) scale(0.95);
}

#chat-anchors-edge-layer[data-visible="true"][data-near-edge="true"][data-edge="right"][data-edge-hot="true"] .chat-anchors-edge-hide {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-collapsed="true"][data-collapsed-edge="right"] .chat-anchors-edge-show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-near-edge="true"][data-edge="left"][data-edge-hot="true"] .chat-anchors-edge-hide {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-collapsed="true"][data-collapsed-edge="left"] .chat-anchors-edge-show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-near-edge="true"][data-edge="top"][data-edge-hot="true"] .chat-anchors-edge-hide {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-collapsed="true"][data-collapsed-edge="top"] .chat-anchors-edge-show {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-near-edge="true"][data-edge="bottom"][data-edge-hot="true"] .chat-anchors-edge-hide {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-collapsed="true"][data-collapsed-edge="bottom"] .chat-anchors-edge-show {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) scale(1);
}

#chat-anchors-edge-layer[data-visible="true"][data-dimmed="true"][data-near-edge="true"][data-edge][data-edge-hot="true"] .chat-anchors-edge-hide {
  opacity: 0.18;
}

.chat-anchors-tooltip {
  position: fixed;
  z-index: 99999;
  background: var(--anchor-tooltip-bg);
  border: 1px solid var(--anchor-tooltip-border);
  color: var(--anchor-tooltip-text);
  font-size: 13px;
  line-height: 1.5;
  padding: 8px 12px;
  border-radius: 8px;
  pointer-events: none;
  backdrop-filter: blur(8px);
  box-shadow: var(--anchor-tooltip-shadow);
  max-width: 300px;
  max-height: 80vh;
  overflow: hidden;
  word-wrap: break-word;
  white-space: pre-wrap;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.1s ease;
  transform: scale(0.95);
}

.chat-anchors-tooltip[data-visible="true"] {
  opacity: 1;
  transform: scale(1);
}

.chat-anchors-highlight {
  animation: anchor-flash 1.2s ease-out forwards;
}

@keyframes anchor-flash {
  0% {
    background: rgba(50, 200, 100, 0.15);
    box-shadow: 0 0 0 2px rgba(50, 200, 100, 0.4);
  }
  100% {
    background: transparent;
    box-shadow: none;
  }
}

@media (max-width: 900px) {
  #chat-anchors-panel {
    right: 12px;
    left: 12px;
    top: auto;
    bottom: 12px;
    width: auto;
  }
}