/* This file assigns the main colors, using variables that
   have been set previously. */

body.pretext {
  color: var(--bodyfontcolor);
}

.ptx-masthead .title-container > .heading, .ptx-masthead .title-container > .heading a, .ptx-masthead .logo-link:empty:hover:before, .ptx-masthead .byline a {
  color: #2a5ea4;
  color: var(--documenttitle);
}

.ptx-masthead .title-container > .heading a:active, .ptx-masthead .logo-link:empty:active:before, .ptx-masthead .byline a:active {
  color: #932c1c;
  color: var(--bodytitle);
}
.ptx-toc ul.structural li a {
  color: #505050;
  color: var(--chaptertoctext);
  background-color: #dbf5ff;
  background-color: var(--chaptertoc);
  border-color: #afc2e5;
  border-color: var(--tocborder);
}
.ptx-toc ul.structural li .toc-chevron-surround svg {
  fill: var(--chaptertoctext);
}

.ptx-toc ul.structural li ul.structural a {
  color: #404040;
  color: var(--sectiontoctext);
  background-color: var(--sectiontoc);
}
.ptx-toc.parts:not(.depth2) > ul.structural > li > ul.structural > li > .toc-item > a {
  color: var(--chaptertoctextactive);
  background-color: var(--chaptertocactive);
  border-color: var(--highlighttocborder);
}
.ptx-toc.parts:not(.depth2) > ul.structural > li:first-child > ul.structural > li > .toc-item > a {
  color: var(--sectiontoctext);
  background-color: var(--sectiontoc);
}
.ptx-toc.parts:not(.depth2) > ul.structural > li > ul.structural > li > .toc-item > a:hover {
  color: var(--sectiontoctextactive);
  background-color: var(--chaptertoc);
}
.ptx-toc ul.structural li ul.structural .toc-chevron-surround svg {
  fill: var(--sectiontoctext);
}

.ptx-toc ul.structural li a.active {
  color: #404040;
  color: var(--chaptertoctextactive);
  background-color: var(--chaptertocactive);
  border-color: var(--highlighttocborder);
}
.ptx-toc ul.structural li ul.structural a.active {
  color: var(--sectiontoctextactive);
  background-color: var(--sectiontocactive);
  border-color: var(--highlighttocborder);
}

.ptx-toc ul.structural li a:focus,
.ptx-toc ul.structural li a:hover {
  color: #321a0c;
  color: var(--highlighttoctext);
  background-color: var(--highlighttoc);
  border-color: #ec704b;
  border-color: var(--highlighttocborder);
}
.ptx-toc ul.structural li ul.structural a:focus,
.ptx-toc ul.structural li ul.structural a:hover {
  color: #321a0c;
  color: var(--highlighttoctext);
  background-color: var(--highlighttoc);
  border-color: var(--highlighttocborder);
}

.ptx-toc ul.structural li.part a {
    margin-top: 15px;
    border-bottom: none;
}
.ptx-toc ul.structural li.part a,
.ptx-toc ul.structural li.frontmatter a:first-child,
.ptx-toc ul.structural li.backmatter a:first-child {
    color: #222222;
    background-color: var(--bodytitlehighlight);
    font-size: 110%;
    padding-top: 7px;
    padding-bottom: 7px;
}
.ptx-toc ul.structural li.part a:focus,
.ptx-toc ul.structural li.frontmatter a:focus,
.ptx-toc ul.structural li.backmatter a:focus,
.ptx-toc ul.structural li.part a:hover,
.ptx-toc ul.structural li.frontmatter a:hover,
.ptx-toc ul.structural li.backmatter a:hover {
    color: #ffffff;
    background-color: var(--highlighttoc);
}

.ptx-content .summary-links a {
  color: var(--sectiontoctext);
}
.ptx-content .summary-links a:hover, .ptx-content .summary-links a:focus {
  color: var(--highlighttoctext);
  background: var(--highlighttoc);
}

.ptx-content [data-knowl], .ptx-content [data-knowl]:hover, .ptx-content [data-knowl]:active, .ptx-content [data-knowl].active {
    color: var(--bodytitle);
}
.ptx-content [data-knowl]:hover, .ptx-content [data-knowl]:active, .ptx-content [data-knowl].active {
    color: var(--bodyfontcolorhighlight);
    background-color: var(--bodytitlehighlight);
}

/* next two groups concern accessibility, so check when making changes */
.ptx-content .para > a.internal {
    color: var(--bodytitle);
}
.ptx-content .para > a.external {
    color: var(--bodysubtitle);
}
.ptx-content .para > a.internal:hover, .ptx-content .para > a.internal:hover *,
.ptx-content .para > a.internal:focus, .ptx-content .para > a.internal:focus * {
    color: var(--bodyfontcolorhighlight);
    background-color: var(--bodytitlehighlight);
}
.ptx-content .para > a.external:hover, .ptx-content .para > a.external:hover *,
.ptx-content .para > a.external:focus, .ptx-content .para > a.external:focus * {
    color: var(--bodyfontcolorhighlight);
    background-color: var(--bodysubtitlehighlight);
}

.ptx-content .playvideo {
    background-color: var(--videoplay);
}

.ptx-content .goal-like {
  border-color: var(--chaptertoc);
}

.ptx-content .assemblage-like {
    border-color: var(--assemblageborder);
    background-color: var(--assemblagebackground);
}

.ptx-content .knowl-output {
    border-color: var(--knowlborder);
    background-color: var(--knowlbackground);
}
.ptx-content .knowl-footer {
    background-color: var(--knowlborder);
}

/* 
  pastel
*/
.pretext[data-atmosphere="pastel"],
.pretext[data-atmosphere="pastel"] .ptx-main {
  background: #dbf5ff;
    background: #efe;
}
.pretext[data-atmosphere="pastel"] {
  --documenttitle: #2a5ea4;
  --bodytitle: #A62E1C;
  --bodysubtitle: #2B5F82;
  --bodytitlehighlight: #e0e9ff;
  --bodyfonttitlehighlight: #306;
  --bodysubtitlehighlight: #FCE5E4;

  --chaptertoc: #dbf5ff;
  --chaptertoc: #dcdcf9;
  --chaptertoctext: #444444;
  --chaptertocactive: #fae5b6;
  --chaptertoctextactive: #303030;
  --sectiontoc: #ffeeee;
  --sectiontoctext: #404040;
  --sectiontocactive: #fae5b6;
  --sectiontoctextactive: #202020;
  --tocborder: #afc2e5;

  --highlighttoc: #fac793;
  --highlighttoc: #fadfa3;
  --highlighttoctext: #321a0c;
  --highlighttocborder: #ec704b;

  --assemblageborder: #1100aa;
  --assemblagebackground: #f4f4fe;

  --knowlborder: #e0e9ff;
  --knowlbackground: #f5f8ff;
}

.pretext[data-atmosphere="pastel"] .ptx-toc {
  scrollbar-color: var(--documenttitlelight) #efe;
}
.pretext[data-atmosphere="pastel"] .ptx-navbar {
    background: #efe;
  background: #dbf5ff;
}
.pretext[data-atmosphere="pastel"] .ptx-masthead {
    background: #efe;
  background: #dbf5ff;
}
.pretext[data-atmosphere="pastel"] .ptx-sidebar {
    background: #ffd;
}

/* twilight */

.pretext[data-atmosphere="darktwilight"] {
  --bodyfontcolor: #ddd;
  --bodyfontcolorhighlight: #222;
  --documenttitle: #2a5ea4;
  --documenttitledark: #20477b;
  --documenttitlelight: #abd;
  --bodytitle: #abd; 
  --bodysubtitle: #dcb;
  --bodytitlehighlight: #ad6;
  --bodyfonttitlehighlight: #306;
  --bodysubtitlehighlight: #363;
     /*
       The bodytitle and bodysubtitle colors must have at least a 3:1 contrast
       ratio with black, and at least 5:1 ratio with with the corresponding highlight.
       (The second condition will guarantee an adequate contrast with white.)
     */

  --chaptertoc: hsl(9, 72%, 30%);  /* #832615; */
  --chaptertoctext: #dee;
  --chaptertocactive: var(--documenttitle);
  --chaptertoctextactive: white;
  --sectiontoc: hsl(0, 0%, 40%);
  --sectiontoctext: #eed;
  --sectiontocactive: var(--documenttitle);
  --sectiontoctextactive: white;
  --tocborder: #152f53;

  --highlighttoc: var(--documenttitledark);
  --highlighttoctext: white;
  --highlighttocborder: var(--chaptertoc);

  --videoplay: var(--bodytitle);
  --assemblageborder: #1100aa;
  --assemblagebackground: #f5f8ff;
  --assemblagebackground: #003;

  --knowlborder: var(--bodytitlehighlight);
  --knowlbackground: var(--assemblagebackground);

  --bannerbackground: hsl(0, 0%, 33%);
  --navbarbackground: hsl(0, 0%, 33%);
  --footerbackground: hsl(0, 0%, 30%);
  --mainbackground: hsl(0, 0%, 27%);
  --buttonbackground: hsl(225, 80%, 25%);
  --codebackground: hsl(120, 100%, 17%);
  --linkbackground: hsl(120, 90%, 23%);
  --linkbackgroundhighlight: hsl(0, 0%, 70%);
  --keybackground: hsl(0, 100%, 20%);

}

/* dark */

.pretext[data-atmosphere="dark"] {
  --bodyfontcolor: #ddd;
  --bodyfontcolorhighlight: #222;
  --documenttitle: #2a5ea4;
  --documenttitledark: #20477b;
  --documenttitlelight: #8ab;
  --bodytitle: #abd; 
  --bodysubtitle: #dcb;
  --bodytitlehighlight: #ad6;
  --bodyfonttitlehighlight: #306;
  --bodysubtitlehighlight: #363;
     /*
       The bodytitle and bodysubtitle colors must have at least a 3:1 contrast
       ratio with black, and at least 5:1 ratio with with the corresponding highlight.
       (The second condition will guarantee an adequate contrast with white.)
     */

  --chaptertoc: hsl(5, 86%, 24%);  
  --chaptertoctext: #dee;
  --chaptertocactive: var(--documenttitle);   /* often the same as documenttitle */
  --chaptertoctextactive: white;
  --sectiontoc: hsl(0, 0%, 27%);
  --sectiontoctext: #eed;
  --sectiontocactive: var(--documenttitle);   /* often the same as documenttitle */
  --sectiontoctextactive: white;
  --tocborder: #152f53;

  --highlighttoc: var(--documenttitledark);
  --highlighttoctext: white;
  --highlighttocborder: var(--chaptertoc);

  --videoplay: var(--bodytitle);
  --assemblageborder: #1100aa;
  --assemblagebackground: #f5f8ff;
  --assemblagebackground: #003;

  --knowlborder: var(--bodytitlehighlight);
  --knowlbackground: var(--assemblagebackground);

  --bannerbackground: hsl(0, 0%, 20%);
  --navbarbackground: hsl(0, 0%, 20%);
  --footerbackground: hsl(0, 0%, 22%);
  --mainbackground: hsl(0, 0%, 17%);
  --buttonbackground: hsl(232, 90%, 19%);
  --codebackground: hsl(120, 100%, 15%);
  --linkbackground: hsl(120, 90%, 20%);
  --linkbackgroundhighlight: hsl(0, 0%, 70%);
  --keybackground: hsl(0, 100%, 19%);

}


/* midnight */

.pretext[data-atmosphere="darkmidnight"] {
  --bodyfontcolor: #ddd;
  --bodyfontcolorhighlight: #222;
  --documenttitle: #2a5ea4;
  --documenttitledark: #20477b;
  --documenttitlelight: #8ab;
  --bodytitle: #abd; 
  --bodysubtitle: #dcb;
  --bodytitlehighlight: #ad9;
  --bodyfonttitlehighlight: #306;
  --bodysubtitlehighlight: #363;
     /*
       The bodytitle and bodysubtitle colors must have at least a 3:1 contrast
       ratio with black, and at least 5:1 ratio with with the corresponding highlight.
       (The second condition will guarantee an adequate contrast with white.)
     */

  --chaptertoc: hsl(0, 100%, 17%);
  --chaptertoctext: #dee;
  --chaptertocactive: var(--documenttitle);   /* often the same as documenttitle */
  --chaptertoctextactive: white;
  --sectiontoc: hsl(0, 0%, 13%);
  --sectiontoctext: #eed;
  --sectiontocactive: var(--documenttitle);   /* often the same as documenttitle */
  --sectiontoctextactive: white;
  --tocborder: #152f53;

  --highlighttoc: var(--documenttitledark);
  --highlighttoctext: white;
  --highlighttocborder: var(--chaptertoc);

  --videoplay: var(--bodytitle);
  --assemblageborder: #1100aa;
  --assemblagebackground: #f5f8ff;
  --assemblagebackground: #003;

  --knowlborder: var(--bodytitlehighlight);
  --knowlbackground: var(--assemblagebackground);

  --bannerbackground: hsl(0, 0%, 16%);
  --navbarbackground: hsl(0, 0%, 16%);
  --footerbackground: hsl(0, 0%, 13%);
  --mainbackground: hsl(0, 0%, 7%);
  --buttonbackground: hsl(240, 100%, 13%);
  --codebackground: hsl(120, 100%, 17%);
  --linkbackground: hsl(120, 90%, 20%);
  --linkbackgroundhighlight: hsl(0, 0%, 70%);
  --keybackground: hsl(0, 100%, 17%);
}

.pretext[data-atmosphere*="dark"] {
  background: var(--mainbackground);
}
.pretext[data-atmosphere*="dark"] .ptx-page > .ptx-main {
    background: var(--mainbackground);
    color: var(--bodyfontcolor);
}
.pretext[data-atmosphere*="dark"] .ptx-content .summary-links a {
    background: var(--documenttitledark);
    background: var(--chaptertoc);
}
.pretext[data-atmosphere*="dark"] .ptx-navbar {
    background: var(--navbarbackground);
}
.pretext[data-atmosphere*="dark"] .ptx-page-footer .feedback-link,
.pretext[data-atmosphere*="dark"] .ptx-content-footer .button,
.pretext[data-atmosphere*="dark"] .ptx-navbar .button {
  background-color: var(--buttonbackground);
  color: var(--bodyfontcolor);
}
.pretext[data-atmosphere*="dark"] .ptx-page-footer .feedback-link:hover,
.pretext[data-atmosphere*="dark"] .ptx-content-footer .button:hover,
.pretext[data-atmosphere*="dark"] .ptx-navbar .button:hover,
.pretext[data-atmosphere*="dark"] .ptx-content-footer .button:hover {
  background-color: var(--linkbackgroundhighlight);
  color: var(--bodyfontcolorhighlight);
}
.pretext[data-atmosphere*="dark"] .ptx-navbar .calculator-toggle {
  background-color: var(--buttonbackground);
}
.pretext[data-atmosphere*="dark"] .ptx-navbar .calculator-toggle:hover {
  background-color: var(--linkbackgroundhighlight);
  color: var(--bodyfontcolorhighlight);
}

.pretext[data-atmosphere*="dark"] .ptx-masthead {
    background: var(--bannerbackground);
}

.pretext[data-atmosphere*="dark"] .ptx-page-footer {
    background: var(--footerbackground);
    border-top-color: #447;
    border-bottom-color: #447;
}
.pretext[data-atmosphere*="dark"] .ptx-page-footer .logo {
    background: #779;
    border-radius: 0.4em;
}
.pretext[data-atmosphere*="dark"] .ptx-masthead .title-container > .pretext .heading,
.pretext[data-atmosphere*="dark"] .ptx-masthead .title-container > .heading a,
.pretext[data-atmosphere*="dark"] .ptx-masthead .logo-link:empty:hover::before,
.pretext[data-atmosphere*="dark"] .ptx-masthead .byline,
.pretext[data-atmosphere*="dark"] .ptx-masthead .byline a {
  color: var(--documenttitlelight);
}
.pretext[data-atmosphere*="dark"] .ptx-toc {
  scrollbar-color: var(--documenttitlelight) var(--footerbackground);
}
.pretext[data-atmosphere*="dark"] .ptx-content .code-inline {
/*
  color: var(--documenttitledark);
*/
  background: var(--codebackground);
}
.pretext[data-atmosphere*="dark"] .ptx-content .kbdkey {
/*
  color: var(--documenttitledark);
*/
  background: var(--keybackground);
}
.pretext[data-atmosphere*="dark"] .ptx-content .goal-like > .heading {
  background:  var(--chaptertoc);
}
.pretext[data-atmosphere*="dark"] .ptx-content a.url,
.pretext[data-atmosphere*="dark"] .ptx-content a.internal,
.pretext[data-atmosphere*="dark"] .ptx-content a.external {
  color: #ddc;
  background-color: var(--linkbackground);
  color: var(--bodyfontcolor);
}

.pretext[data-atmosphere*="dark"] .ptx-content [data-knowl] {
  background-color: var(--linkbackground);
  color: var(--bodyfontcolor);
}
.pretext[data-atmosphere*="dark"] .ptx-content [data-knowl]:hover,
.pretext[data-atmosphere*="dark"] .ptx-content [data-knowl]:active,
.pretext[data-atmosphere*="dark"] .ptx-content [data-knowl].active {
  background-color: var(--linkbackgroundhighlight);
  color: var(--bodyfontcolorhighlight);
}
.pretext[data-atmosphere*="dark"] .ptx-page .ptx-main .ptx-content .knowl-content > .solution-like {
  background: #606;
}