/* ─── Whiteboard Canvas ─── */
.whiteboard {
  width: 100%;
  height: 100%;
  position: relative;
  background: #F5F5F7;
  overflow: hidden;
}

.whiteboard__canvas-wrapper {
  width: 100%;
  height: 100%;
  position: relative;
}

.whiteboard__grid-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* ─── Toolbar ─── */
.whiteboard__toolbar {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 8px 12px;
  display: flex;
  gap: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  z-index: 10;
}

.whiteboard__tool-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: all 0.15s;
  position: relative;
}

.whiteboard__tool-btn:hover {
  background: var(--color-hover);
}

.whiteboard__tool-btn--active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.whiteboard__tool-btn svg {
  width: 20px;
  height: 20px;
}

.whiteboard__tool-divider {
  width: 1px;
  background: var(--color-border);
  margin: 4px 4px;
}

/* Tool tooltip */
.whiteboard__tool-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
}

.whiteboard__tool-btn:hover::after {
  opacity: 1;
}

/* ─── Zoom Controls ─── */
.whiteboard__zoom-controls {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  z-index: 10;
}

.whiteboard__zoom-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  font-size: 16px;
}

.whiteboard__zoom-btn:hover {
  background: var(--color-hover);
}

.whiteboard__zoom-level {
  text-align: center;
  font-size: 11px;
  color: var(--color-text-tertiary);
  padding: 2px 0;
}

/* ─── Shape Picker Popup ─── */
.whiteboard__shape-picker {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 8px;
  display: none;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.whiteboard__shape-picker--visible {
  display: grid;
}

.whiteboard__shape-option {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.whiteboard__shape-option:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ─── PostIt Color Picker ─── */
.whiteboard__color-picker {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 8px;
  display: none;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.whiteboard__color-picker--visible {
  display: flex;
}

.whiteboard__color-option {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s;
}

.whiteboard__color-option:hover {
  transform: scale(1.15);
  border-color: var(--color-text);
}

/* ─── Context Menu ─── */
.wb-context-menu {
  position: fixed;
  z-index: 10000;
  min-width: 180px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #E5E5EA);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 4px;
  font-size: 13px;
}

.wb-context-menu__item {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  padding: 6px 12px;
  border: none;
  background: none;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  color: var(--color-text-primary, #1d1d1f);
  font-size: 13px;
  font-family: inherit;
}

.wb-context-menu__item:hover {
  background: var(--color-hover, #F5F5F7);
}

.wb-context-menu__item--danger {
  color: var(--color-danger, #FF3B30);
}

.wb-context-menu__divider {
  height: 1px;
  background: var(--color-border, #E5E5EA);
  margin: 4px 0;
}

.wb-context-menu__icon {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.wb-context-menu__shortcut {
  margin-left: auto;
  font-size: 11px;
  color: var(--color-text-tertiary, #8E8E93);
  padding-left: 16px;
}

/* ─── Mini Toolbar (Text formatting) ─── */
.wb-mini-toolbar {
  position: fixed;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #E5E5EA);
  border-radius: 6px;
  padding: 2px 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateX(-50%);
}

.wb-mini-toolbar__btn {
  width: 28px;
  height: 28px;
  border: none;
  background: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary, #1d1d1f);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}

.wb-mini-toolbar__btn:hover {
  background: var(--color-hover, #F5F5F7);
}

.wb-mini-toolbar__divider {
  width: 1px;
  height: 20px;
  background: var(--color-border, #E5E5EA);
}

.wb-mini-toolbar__select {
  height: 26px;
  border: 1px solid var(--color-border, #E5E5EA);
  border-radius: 4px;
  font-size: 11px;
  background: var(--color-surface, #fff);
  color: var(--color-text-primary, #1d1d1f);
  cursor: pointer;
  padding: 0 4px;
  font-family: inherit;
}

.wb-mini-toolbar__select:focus {
  outline: none;
  border-color: var(--color-primary, #007AFF);
}

.wb-mini-toolbar__color-palette {
  display: flex;
  align-items: center;
  gap: 3px;
}

.wb-mini-toolbar__color-swatch {
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  transition: transform 0.1s;
}

.wb-mini-toolbar__color-swatch:hover {
  transform: scale(1.2);
}

.wb-mini-toolbar__color-swatch--active {
  outline: 2px solid var(--color-primary, #007AFF);
  outline-offset: 1px;
}

.wb-mini-toolbar__color-custom {
  width: 20px;
  height: 20px;
  border: 1px dashed var(--color-border, #E5E5EA);
  border-radius: 50%;
  background: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-tertiary, #8E8E93);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.wb-mini-toolbar__color-custom:hover {
  border-color: var(--color-primary, #007AFF);
  color: var(--color-primary, #007AFF);
}

.wb-mini-toolbar__color-hidden {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}