metabuilder/scss/components/ToggleButton.module.scss

// ToggleButton Component - Material Design 3
// ===========================================
// Toggle button and group styling using M3 tokens

.toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mat-sys-label-large-font);
  font-size: var(--mat-sys-label-large-size);
  font-weight: var(--mat-sys-label-large-weight);
  text-transform: none;
  border: 1px solid var(--mat-sys-outline);
  background-color: transparent;
  color: var(--mat-sys-on-surface);
  cursor: pointer;
  transition: background-color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard),
              border-color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard),
              color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard);

  &:hover:not(:disabled) {
    background-color: color-mix(in srgb, var(--mat-sys-on-surface) 8%, transparent);
  }

  &:focus-visible {
    outline: 2px solid var(--mat-sys-primary);
    outline-offset: 2px;
  }

  &:disabled {
    opacity: var(--disabled-content-opacity);
    cursor: not-allowed;
  }

  // Selected state
  &--selected {
    background-color: var(--mat-sys-secondary-container);
    color: var(--mat-sys-on-secondary-container);
    border-color: var(--mat-sys-secondary-container);

    &:hover:not(:disabled) {
      background-color: color-mix(in srgb, var(--mat-sys-on-secondary-container) 8%, var(--mat-sys-secondary-container));
    }
  }

  // Size variants
  &--small {
    padding: 6px 12px;
    font-size: var(--mat-sys-label-medium-size);
    min-height: 32px;
  }

  &--medium {
    padding: 10px 16px;
    min-height: 40px;
  }

  &--large {
    padding: 12px 20px;
    font-size: var(--mat-sys-label-large-size);
    min-height: 48px;
  }

  // Full width
  &--full-width {
    width: 100%;
  }
}

// Toggle Button Group
.toggle-btn-group {
  display: inline-flex;
  border-radius: var(--mat-sys-corner-full);

  // Remove individual button borders and add group border
  .toggle-btn {
    border-radius: 0;

    &:first-child {
      border-top-left-radius: var(--mat-sys-corner-full);
      border-bottom-left-radius: var(--mat-sys-corner-full);
    }

    &:last-child {
      border-top-right-radius: var(--mat-sys-corner-full);
      border-bottom-right-radius: var(--mat-sys-corner-full);
    }

    // Collapse borders between buttons
    &:not(:first-child) {
      margin-left: -1px;
    }

    // Ensure focused/selected buttons are above siblings
    &:focus-visible,
    &--selected {
      z-index: 1;
    }
  }

  // Vertical orientation
  &--vertical {
    flex-direction: column;

    .toggle-btn {
      &:first-child {
        border-top-left-radius: var(--mat-sys-corner-full);
        border-top-right-radius: var(--mat-sys-corner-full);
        border-bottom-left-radius: 0;
      }

      &:last-child {
        border-bottom-left-radius: var(--mat-sys-corner-full);
        border-bottom-right-radius: var(--mat-sys-corner-full);
        border-top-right-radius: 0;
      }

      &:not(:first-child) {
        margin-left: 0;
        margin-top: -1px;
      }
    }
  }

  // Full width
  &--full-width {
    display: flex;
    width: 100%;

    .toggle-btn {
      flex: 1;
    }
  }

  // Color variants
  &--primary {
    .toggle-btn--selected {
      background-color: var(--mat-sys-primary);
      color: var(--mat-sys-on-primary);
      border-color: var(--mat-sys-primary);

      &:hover:not(:disabled) {
        background-color: color-mix(in srgb, var(--mat-sys-on-primary) 8%, var(--mat-sys-primary));
      }
    }
  }

  &--secondary {
    .toggle-btn--selected {
      background-color: var(--mat-sys-secondary);
      color: var(--mat-sys-on-secondary);
      border-color: var(--mat-sys-secondary);

      &:hover:not(:disabled) {
        background-color: color-mix(in srgb, var(--mat-sys-on-secondary) 8%, var(--mat-sys-secondary));
      }
    }
  }

  &--tertiary {
    .toggle-btn--selected {
      background-color: var(--mat-sys-tertiary);
      color: var(--mat-sys-on-tertiary);
      border-color: var(--mat-sys-tertiary);

      &:hover:not(:disabled) {
        background-color: color-mix(in srgb, var(--mat-sys-on-tertiary) 8%, var(--mat-sys-tertiary));
      }
    }
  }

  &--standard {
    // Standard uses subtle tonal selection
    .toggle-btn--selected {
      background-color: color-mix(in srgb, var(--mat-sys-on-surface) 8%, transparent);
    }
  }
}