overleaf-cep/services/web/frontend/stylesheets/modules/symbol-palette.scss

:root {
  --symbol-palette-bg: var(--bg-dark-tertiary);
  --symbol-palette-color: var(--content-primary-dark);
  --symbol-palette-header-background: var(--bg-dark-secondary);
  --symbol-palette-item-bg: var(--bg-dark-secondary);
  --symbol-palette-item-color: var(--content-primary-dark);
  --symbol-palette-selected-tab-bg: var(--bg-dark-tertiary);
  --symbol-palette-selected-tab-color: var(--content-primary-dark);
  --symbol-palette-text-shadow-color: var(--bg-dark-primary);
  --symbol-palette-overlay-bg: #{rgb($bg-dark-tertiary, 0.75)};
}

@include theme('light') {
  --symbol-palette-bg: var(--bg-light-primary);
  --symbol-palette-color: var(--content-secondary);
  --symbol-palette-header-background: var(--bg-light-tertiary);
  --symbol-palette-item-bg: var(--bg-light-tertiary);
  --symbol-palette-item-color: var(--content-secondary);
  --symbol-palette-selected-tab-bg: var(--bg-light-primary);
  --symbol-palette-selected-tab-color: var(--blue-50);
  --symbol-palette-text-shadow-color: var(--bg-light-tertiary);
  --symbol-palette-overlay-bg: #{rgb($bg-light-primary, 0.75)};
}

.symbol-palette-container {
  height: 100%;
  width: 100%;
  position: relative;
}

.symbol-palette {
  display: flex;
  flex-direction: column;
  background: var(--symbol-palette-bg);
  color: var(--symbol-palette-color);
  width: 100%;
  height: 100%;
  min-height: 220px; // allow space for the overlay contents
}

.symbol-palette-header-outer {
  flex-shrink: 0;
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  align-items: stretch;
  font-family: $font-family-sans-serif;
  font-size: var(--font-size-02);
  background: var(--symbol-palette-header-background);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 10%);
}

.symbol-palette-header {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: stretch;
}

.symbol-palette-tab-list[role='tablist'] {
  background: none;
  border-bottom: none;
  flex-wrap: wrap;
  display: flex;
}

.symbol-palette-tab[role='tab'] {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  color: inherit;
  cursor: pointer;
  display: inline-block;
  font: inherit;
  margin: 0;
  padding: var(--spacing-02) var(--spacing-04);

  &[aria-selected='true'] {
    background: var(--symbol-palette-selected-tab-bg);
    color: var(--symbol-palette-selected-tab-color);
  }

  &:disabled {
    cursor: default;
    opacity: 0.25;
  }
}

.symbol-palette-body {
  flex: 1;
  overflow-y: auto;
}

.symbol-palette-items {
  display: flex;
  flex-wrap: wrap;
  padding: var(--spacing-03);
}

.symbol-palette-item {
  font-family: 'Stix Two Math', serif;
  font-size: 24px;
  line-height: 42px;
  height: 42px;
  width: 42px;
  padding: 0;
  margin: var(--spacing-03);
  color: var(--symbol-palette-item-color);
  background: var(--symbol-palette-item-bg);
  border: 1px solid transparent;
  border-radius: var(--border-radius-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

// Recognised commands with no Unicode glyph show their command name instead of
// an empty square. Shrink and wrap the name to fit the fixed glyph box; the full
// \command is in the tooltip.
.symbol-palette-item-label {
  font-family: monospace;
  font-size: 9px;
  line-height: 1.1;
  padding: 2px;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.symbol-palette-item-command {
  font-family: monospace;
  font-weight: bold;
}

.symbol-palette-item-notes {
  margin-top: var(--spacing-03);
}

.symbol-palette-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-05);
}

.symbol-palette-search {
  padding: var(--spacing-01) var(--spacing-05);
  margin: var(--spacing-03);
  line-height: 1;
  height: auto;
  width: auto;
}

.symbol-palette-header-group {
  display: flex;
  align-items: stretch;
  white-space: nowrap;
  margin-left: var(--spacing-03);
}

.symbol-palette-draw-toggle {
  display: inline-flex;
  align-items: center;
  align-self: center; // don't stretch to the full header height
  margin: 0 var(--spacing-02);
  padding: var(--spacing-02);
  border: none;
  border-radius: var(--border-radius-base);
  background: transparent;
  color: inherit;
  cursor: pointer;

  &[aria-pressed='true'] {
    background: var(--bg-accent-01);
    color: var(--content-primary-dark); // white icon on the accent background
  }
}

.symbol-palette-info-link,
.symbol-palette-info-link:focus,
.symbol-palette-info-link:hover {
  color: inherit;
}

.symbol-palette-close-button-outer {
  display: flex;
  align-items: center;
  margin-right: var(--spacing-05);
}

.symbol-palette-close-button {
  margin-top: var(--spacing-05);
  margin-left: var(--spacing-02);
  margin-right: var(--spacing-03);

  .symbol-palette-unavailable & {
    visibility: hidden;
  }
}

.symbol-palette-overlay {
  position: absolute;
  inset: 0;
  background: var(--symbol-palette-overlay-bg);
  color: var(--symbol-palette-color);
  display: flex;
  flex-direction: column;
  padding: 0 var(--spacing-09) var(--spacing-05);
  align-items: center;
  text-shadow: 0 0 8px var(--symbol-palette-text-shadow-color);
  min-height: 200px;
  overflow: auto;

  h4 {
    font-weight: bold;
    color: var(--symbol-palette-color);
    text-align: center;
  }

  .symbol-palette-close-button {
    position: absolute;
    top: 0;
    right: 0;
  }

  .upgrade-benefits {
    column-count: 2;
  }
}

.symbol-palette-draw {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-04);
  height: 100%;
  padding: var(--spacing-04);
}

// left column: recognised-results grid, scrolls independently
.symbol-palette-draw-results {
  flex: 1 1 auto;
  min-width: 0;
  overflow-y: auto;
}

// shown in the results column while the canvas is empty
.symbol-palette-draw-instructions {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  margin: 0;
  padding: var(--spacing-06);
  text-align: center;
  opacity: 0.7;
}

// right column: square canvas pinned to the panel height
.symbol-palette-draw-canvas-panel {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-02);
  height: 100%;
  aspect-ratio: 1;
}

.symbol-palette-draw-canvas {
  flex: 1 1 auto;
  width: 100%;
  min-height: 0;
  border: 1px dashed var(--border-primary);
  border-radius: var(--border-radius-base);
  background: var(--bg-light-primary);
  touch-action: none;
}

.symbol-palette-draw-toolbar {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: var(--spacing-04);
  min-height: 20px;
  font-size: var(--font-size-01);
}

.symbol-palette-draw-clear {
  appearance: none;
  border: 1px solid var(--border-primary);
  border-radius: var(--border-radius-base);
  background: transparent;
  color: inherit;
  cursor: pointer;
  padding: var(--spacing-01) var(--spacing-05);
}