// Base settings for all themes that can optionally be
// overridden by the super-theme

@use 'sass:color';
@use 'sass:meta';

// Background of the presentation
$background: #2b2b2b !default;
$background-color: #bbb !default;

// Primary/body text
$main-font: 'Lato', sans-serif !default;
$main-font-size: 40px !default;
$main-color: #eee !default;

// Vertical spacing between blocks of text
$block-margin: 20px !default;

// Headings
$heading-margin: 0 0 20px 0 !default;
$heading-font: 'League Gothic', Impact, sans-serif !default;
$heading-color: #eee !default;
$heading-line-height: 1.2 !default;
$heading-letter-spacing: normal !default;
$heading-text-transform: uppercase !default;
$heading-text-shadow: none !default;
$heading-font-weight: normal !default;
$heading1-text-shadow: none !default;

$heading1-size: 3.77em !default;
$heading2-size: 2.11em !default;
$heading3-size: 1.55em !default;
$heading4-size: 1em !default;

$code-font: monospace !default;

// Links and actions
$link-color: #13daec !default;
$link-color-dark: color.scale($link-color, $lightness: -15%) !default;
$link-color-hover: color.scale($link-color, $lightness: 20%) !default;

// Text selection
$selection-background-color: #0fadbb !default;
$selection-color: #fff !default;

// Colors used for UI elements that are overlaid on top of
// the presentation
$overlay-element-bg-color: 240, 240, 240 !default;
$overlay-element-fg-color: 0, 0, 0 !default;

// Expose all SCSS variables as CSS custom properties
:root {
	// Background of the presentation
	--r-background: #{$background};
	--r-background-color: #{$background-color};

	// Primary/body text
	--r-main-font: #{$main-font};
	--r-main-font-size: #{$main-font-size};
	--r-main-color: #{$main-color};

	// Vertical spacing between blocks of text
	--r-block-margin: #{$block-margin};

	// Headings
	--r-heading-margin: #{$heading-margin};
	--r-heading-font: #{$heading-font};
	--r-heading-color: #{$heading-color};
	--r-heading-line-height: #{$heading-line-height};
	--r-heading-letter-spacing: #{$heading-letter-spacing};
	--r-heading-text-transform: #{$heading-text-transform};
	--r-heading-text-shadow: #{$heading-text-shadow};
	--r-heading-font-weight: #{$heading-font-weight};
	--r-heading1-text-shadow: #{$heading1-text-shadow};

	--r-heading1-size: #{$heading1-size};
	--r-heading2-size: #{$heading2-size};
	--r-heading3-size: #{$heading3-size};
	--r-heading4-size: #{$heading4-size};

	--r-code-font: #{$code-font};

	// Links and actions
	--r-link-color: #{$link-color};
	--r-link-color-dark: #{$link-color-dark};
	--r-link-color-hover: #{$link-color-hover};

	// Text selection
	--r-selection-background-color: #{$selection-background-color};
	--r-selection-color: #{$selection-color};

	// Colors used for UI elements that are overlaid on top of
	// the presentation
	--r-overlay-element-bg-color: #{$overlay-element-bg-color};
	--r-overlay-element-fg-color: #{$overlay-element-fg-color};
}