/* Left panel toolbar: segmented tabs and tool buttons */

.left {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 12px;
  transition: padding 0.3s ease;
  display: flex;
  flex-direction: column;
}

.toolbarHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.toolbarTitle {
  font-size: 20px;
  font-weight: 800;
}

.segmented {
  display: flex;
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 12px;
}

.seg {
  flex: 1;
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 10px 0;
  font-weight: 600;
  cursor: pointer;
}

.seg.on {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.tools {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool {
  text-align: left;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel2);
  color: var(--text);
  font-weight: 650;
  cursor: pointer;
}

.tool.on {
  outline: 2px solid rgba(255, 159, 26, 0.55);
}

/* Tool Options Panel */
.toolOptions {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  display: none;
}

.toolOptionsHeader {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.optionGroup {
  margin-bottom: 14px;
}

.optionGroup label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}

.sliderRow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sliderRow input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--panel2);
  border-radius: 3px;
  cursor: pointer;
}

.sliderRow input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}

.sliderRow input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.sliderRow span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  min-width: 40px;
  text-align: right;
}

/* Shape palette */
.shapePalette {
  display: flex;
  gap: 6px;
}

.shapeBtn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel2);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.shapeBtn:hover {
  background: var(--panel);
  border-color: var(--muted);
}

.shapeBtn.on {
  outline: 2px solid rgba(255, 159, 26, 0.55);
  background: var(--panel);
}

/* Fill toggle */
.fillToggle {
  display: flex;
  gap: 6px;
}

.fillBtn {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.fillBtn:hover {
  background: var(--panel);
  color: var(--text);
}

.fillBtn.on {
  outline: 2px solid rgba(255, 159, 26, 0.55);
  background: var(--panel);
  color: var(--text);
}

/* Color picker */
.optionGroup input[type="color"] {
  width: 100%;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel2);
  cursor: pointer;
  padding: 2px;
}

.optionGroup input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 2px;
}

.optionGroup input[type="color"]::-webkit-color-swatch {
  border-radius: 6px;
  border: none;
}

/* Collapsed toolbar state */
.left.collapsed {
  padding: 12px 0;
  overflow: hidden;
  align-items: center;
  justify-content: flex-start;
}

.left.collapsed .segmented,
.left.collapsed .tools,
.left.collapsed .toolbarTitle,
.left.collapsed .toolOptions {
  display: none !important;
}

.left.collapsed .toolbarHeader {
  margin-bottom: 0;
  justify-content: center;
}

.left.collapsed #btnCollapseToolbar {
  margin: 0;
}

/* Responsive */
@media (max-width: 980px) {
  .left {
    width: auto;
    padding: 10px;
  }
  .tool {
    text-align: center;
  }
}