src/templates/assets/stylesheets/main/_colors.scss
////
/// Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>
///
/// Permission is hereby granted, free of charge, to any person obtaining a
/// copy of this software and associated documentation files (the "Software"),
/// to deal in the Software without restriction, including without limitation
/// the rights to use, copy, modify, merge, publish, distribute, sublicense,
/// and/or sell copies of the Software, and to permit persons to whom the
/// Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
/// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
/// DEALINGS
////

// ----------------------------------------------------------------------------
// Rules
// ----------------------------------------------------------------------------

// Color variables
:root {
  @extend %root;

  // Primary color shades
  --md-primary-fg-color:               hsla(#{hex2hsl($clr-indigo-500)}, 1);
  --md-primary-fg-color--light:        hsla(#{hex2hsl($clr-indigo-400)}, 1);
  --md-primary-fg-color--dark:         hsla(#{hex2hsl($clr-indigo-700)}, 1);
  --md-primary-bg-color:               hsla(0, 0%, 100%, 1);
  --md-primary-bg-color--light:        hsla(0, 0%, 100%, 0.7);

  // Accent color shades
  --md-accent-fg-color:                hsla(#{hex2hsl($clr-indigo-a200)}, 1);
  --md-accent-fg-color--transparent:   hsla(#{hex2hsl($clr-indigo-a200)}, 0.1);
  --md-accent-bg-color:                hsla(0, 0%, 100%, 1);
  --md-accent-bg-color--light:         hsla(0, 0%, 100%, 0.7);
}

// ----------------------------------------------------------------------------

// Allow to explicitly use color schemes in nested content
[data-md-color-scheme="default"] {
  @extend %root;

  // Indicate that the site is rendered with a light color scheme
  color-scheme: light;

  // Hide images for dark mode
  img[src$="#only-dark"],
  img[src$="#gh-dark-mode-only"] {
    display: none;
  }
}

// ----------------------------------------------------------------------------
// Placeholders
// ----------------------------------------------------------------------------

// Default theme, i.e. light mode
%root {

  // Color hue in the range [0,360] - change this variable to alter the tone
  // of the theme, e.g. to make it more redish or greenish
  --md-hue: 225deg;

  // Default color shades
  --md-default-fg-color:               hsla(0, 0%, 0%, 0.87);
  --md-default-fg-color--light:        hsla(0, 0%, 0%, 0.54);
  --md-default-fg-color--lighter:      hsla(0, 0%, 0%, 0.32);
  --md-default-fg-color--lightest:     hsla(0, 0%, 0%, 0.07);
  --md-default-bg-color:               hsla(0, 0%, 100%, 1);
  --md-default-bg-color--light:        hsla(0, 0%, 100%, 0.7);
  --md-default-bg-color--lighter:      hsla(0, 0%, 100%, 0.3);
  --md-default-bg-color--lightest:     hsla(0, 0%, 100%, 0.12);

  // Code color shades
  --md-code-fg-color:                  hsla(200, 18%, 26%, 1);
  --md-code-bg-color:                  hsla(200, 0%, 96%, 1);

  // Code highlighting color shades
  --md-code-hl-color:                  hsla(#{hex2hsl($clr-blue-a200)}, 1);
  --md-code-hl-color--light:           hsla(#{hex2hsl($clr-blue-a200)}, 0.1);

  // Code highlighting syntax color shades
  --md-code-hl-number-color:           hsla(0, 67%, 50%, 1);
  --md-code-hl-special-color:          hsla(340, 83%, 47%, 1);
  --md-code-hl-function-color:         hsla(291, 45%, 50%, 1);
  --md-code-hl-constant-color:         hsla(250, 63%, 60%, 1);
  --md-code-hl-keyword-color:          hsla(219, 54%, 51%, 1);
  --md-code-hl-string-color:           hsla(150, 63%, 30%, 1);
  --md-code-hl-name-color:             var(--md-code-fg-color);
  --md-code-hl-operator-color:         var(--md-default-fg-color--light);
  --md-code-hl-punctuation-color:      var(--md-default-fg-color--light);
  --md-code-hl-comment-color:          var(--md-default-fg-color--light);
  --md-code-hl-generic-color:          var(--md-default-fg-color--light);
  --md-code-hl-variable-color:         var(--md-default-fg-color--light);

  // Typeset color shades
  --md-typeset-color:                  var(--md-default-fg-color);

  // Typeset `a` color shades
  --md-typeset-a-color:                var(--md-primary-fg-color);

  // Typeset `del` and `ins` color shades
  --md-typeset-del-color:              hsla(6, 90%, 60%, 0.15);
  --md-typeset-ins-color:              hsla(150, 90%, 44%, 0.15);

  // Typeset `kbd` color shades
  --md-typeset-kbd-color:              hsla(0, 0%, 98%, 1);
  --md-typeset-kbd-accent-color:       hsla(0, 100%, 100%, 1);
  --md-typeset-kbd-border-color:       hsla(0, 0%, 72%, 1);

  // Typeset `mark` color shades
  --md-typeset-mark-color:             hsla(#{hex2hsl($clr-yellow-a200)}, 0.5);

  // Typeset `table` color shades
  --md-typeset-table-color:            hsla(0, 0%, 0%, 0.12);
  --md-typeset-table-color--light:     hsla(0, 0%, 0%, 0.035);

  // Admonition color shades
  --md-admonition-fg-color:            var(--md-default-fg-color);
  --md-admonition-bg-color:            var(--md-default-bg-color);

  // Warning color shades
  --md-warning-fg-color:              hsla(0, 0%, 0%, 0.87);
  --md-warning-bg-color:              hsla(60, 100%, 80%, 1);

  // Footer color shades
  --md-footer-fg-color:                hsla(0, 0%, 100%, 1);
  --md-footer-fg-color--light:         hsla(0, 0%, 100%, 0.7);
  --md-footer-fg-color--lighter:       hsla(0, 0%, 100%, 0.45);
  --md-footer-bg-color:                hsla(0, 0%, 0%, 0.87);
  --md-footer-bg-color--dark:          hsla(0, 0%, 0%, 0.32);

  // Shadow depth 1
  --md-shadow-z1:
    0 #{px2rem(4px)} #{px2rem(10px)} hsla(0, 0%, 0%, 0.05),
    0 0              #{px2rem(1px)}  hsla(0, 0%, 0%, 0.1);

  // Shadow depth 2
  --md-shadow-z2:
    0 #{px2rem(4px)} #{px2rem(10px)} hsla(0, 0%, 0%, 0.1),
    0 0              #{px2rem(1px)}  hsla(0, 0%, 0%, 0.25);

  // Shadow depth 3
  --md-shadow-z3:
    0 #{px2rem(4px)} #{px2rem(10px)} hsla(0, 0%, 0%, 0.2),
    0 0              #{px2rem(1px)}  hsla(0, 0%, 0%, 0.35);
}
