// Root: emit the light tokens and the grid's own box model + scroll structure.
@use 'tokens' as *;

.apg {
  @include tokens($light);

  position: relative;
  overflow: hidden;
  font: var(--apg-font);
  color: var(--apg-cell-fg);
  background: var(--apg-cell-bg);
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
}

.apg-viewport {
  position: absolute;
  inset: 0;
  overflow: auto;

  // Slimmer, theme-aware scrollbars so the chrome doesn't fight the content.
  scrollbar-width: thin;
  scrollbar-color: var(--apg-scrollbar-thumb) transparent;

  &::-webkit-scrollbar {
    width: 11px;
    height: 11px;
  }

  &::-webkit-scrollbar-thumb {
    background: var(--apg-scrollbar-thumb);
    border: 3px solid transparent;
    border-radius: 8px;
    background-clip: padding-box;
  }

  &::-webkit-scrollbar-thumb:hover {
    background: var(--apg-border-strong);
    background-clip: padding-box;
  }
}

.apg-canvas {
  position: relative;
  display: grid;
}

// The body is a viewport-sized panel the compositor keeps pinned (like the
// header), not a slice of a giant scrolling layer. Rows inside are translated by
// the scroll offset, so content never sits millions of pixels down where a fast
// drag would outrun rasterization and flash blank. The tall canvas above only
// provides the scrollbar range.
.apg-cells {
  grid-area: 1 / 1;
  align-self: start;
  justify-self: start;
  position: sticky;
  top: 0;
  z-index: 0;
  overflow: hidden;
}

.apg-corner {
  grid-area: 1 / 1;
  align-self: start;
  justify-self: start;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 5;
  background: var(--apg-header-bg);
  border-right: var(--apg-border);
  border-bottom: var(--apg-border);
}

// Focus: no default outline on click; a clear accent ring for keyboard users.
.apg:focus {
  outline: none;
}

.apg:focus-visible {
  outline: 2px solid var(--apg-focus-ring);
  outline-offset: -2px;
}

// Inline SVG icon wrapper. Size/color come from the element it's placed on.
.apg-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  flex: none;
  line-height: 0;

  svg {
    display: block;
    width: 100%;
    height: 100%;
  }
}