/* over-ride default css */
.ptx-toc > ul.structural > li:not(:first-child) {
  margin-top: 0;
}
.ptx-toc ul.structural li a {
  border-bottom: 0;
}

.ptx-toc ul.structural li li  a {
  border-bottom: none;  /*solid #999 1px;  */
}
.ptx-toc ul.structural .toc-title-box {
  border-top: solid #999 1px;
}
.ptx-toc ul.structural li ul.structural li:last-child {
  margin-bottom: 0;
}

.ptx-toc {
    width: 240px;
    margin: 0;
    font-size: 14.72px;
    overflow-y: auto;
    overflow-x: hidden;
    background: #fff;
}

/* Aligns toc to the top and side of the allotted space, respectively */
.ptx-toc ul {
    margin: 0px;
    padding: 0px;
}

.ptx-toc ul a,
.ptx-toc ul .part a,
.ptx-toc ul .frontmatter a {
    font-weight: 700;
    font-size: .9em;
}
.ptx-toc ul ul li a {
    font-weight: 400;
    grid-template-columns: 1.5em 1fr;
}

.ptx-toc .toc-chapter .toc-item-list .toc-item .codenumber {
    font-size: 80%;
    padding-top: 0.16em;
}
/* no codenumbers on subsections (anything under section) */
.ptx-toc .toc-section .toc-item-list .toc-item a > .codenumber {
    display: none;
}
.ptx-toc .toc-section .toc-item-list .toc-item a:hover > .codenumber {
    display: inline-block;
}

.ptx-toc ul ul a > .title {
    margin-left: 0;
}
.ptx-toc ul ul a > .title:empty::after {
    content: "empty heading!";
    font-weight: bold;
}
.ptx-toc ul ul ul a > .title {
    margin-left: 0.5em;
    font-size: 90%;
}
.ptx-toc ul ul ul ul a > .title {
    margin-left: 2em;
    font-size: 90%;
    font-style: italic;
}

.ptx-toc ul li a {
    text-decoration: none;
}

.ptx-toc > ul > li a {
    font-weight: bold;
    font-family: "PT Serif", "Times New Roman", Times, serif;
    padding-left: 0.2em;
}
/*
.ptx-toc ul li ul a:hover {
    padding-top: -10px;
}
*/

.ptx-toc ul li a:active {
  box-shadow: rgba(0, 0, 0, 0.5) 0 2px 5px inset;
}


/* ************************************************** */
/* Above code may be old.  New code below             */
/* ************************************************** */


/* TOC is initially closed in the CRC style */
/* The onload js will close it, but you get an odd fluttering effect */

/* comment out because we need to fix the fluttering effect.
   if this is hidden by default, the page is not usable without JavaScript
.ptx-sidebar {
    display: none;
}
*/



/* Links inside the dropdown */
.ptx-toc a {
    padding: .25em .5em .25em .5em;
    text-decoration: none;
    font-weight: 500;
    font-size: .9em;
    margin: 0px;
}

.ptx-toc ul,
.ptx-toc ul li {
    list-style-type: none;
    margin: 0px;
/*    width: 255px; */ /* This one is key to making items menu uniform width */
    padding-inline-start: 0px;
}

/* The anchor carries the grid content  */
/* undo what is in toc_default.css */
.ptx-toc ul li a {
    display: grid;
/*  made titles too wide */
/*
    width: 240px;
*/
    grid-gap: 3px;
    grid-template-columns: 1.25em 10fr;
    grid-template-areas:
        "toc-codenumber toc-content";
}
.ptx-toc {
  position: sticky;
  top: 0;
  width: unset;
  height: 100vh;
}

/*
.ptx-toc::after {
    content: "";
    display: block;
    height: 13em;
    background: #fff;
}
*/

.ptx-toc::after {
    content: url("data:image/svg+xml; utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%25' height='100%25' viewBox='338 3000 8772 6866'%3E%3Cg style='stroke-width:.025in; stroke:black; fill:none'%3E%3Cpolyline points='472,3590 472,9732 ' style='stroke:%23000000;stroke-width:174; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpath style='stroke:%23000000;stroke-width:126;stroke-linecap:butt;' d='M 4724,9448 A 4660 4660 0 0 1 8598 9259 '%3E%3C/path%3E%3Cpath style='stroke:%23000000;stroke-width:174;stroke-linecap:butt;' d='M 4488,9685 A 4228 4228 0 0 0 472 9732 '%3E%3C/path%3E%3Cpath style='stroke:%23000000;stroke-width:126;stroke-linecap:butt;' d='M 4724,3590 A 4241 4241 0 0 1 8598 3496 '%3E%3C/path%3E%3Cpath style='stroke:%23000000;stroke-width:126;stroke-linecap:round;' d='M 850,3496 A 4241 4241 0 0 1 4724 3590 '%3E%3C/path%3E%3Cpath style='stroke:%23000000;stroke-width:126;stroke-linecap:round;' d='M 850,9259 A 4507 4507 0 0 1 4724 9448 '%3E%3C/path%3E%3Cpolyline points='5385,4299 4062,8125 ' style='stroke:%23000000;stroke-width:300; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='8598,3496 8598,9259 ' style='stroke:%23000000;stroke-width:126; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='850,3496 850,9259 ' style='stroke:%23000000;stroke-width:126; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='4960,9685 4488,9685 ' style='stroke:%23000000;stroke-width:174; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='3070,4582 1889,6141 3070,7700 ' style='stroke:%23000000;stroke-width:300; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='6418,4582 7600,6141 6418,7700 ' style='stroke:%23000000;stroke-width:300; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpolyline points='8976,3590 8976,9732 ' style='stroke:%23000000;stroke-width:174; stroke-linejoin:miter; stroke-linecap:round; '%3E%3C/polyline%3E%3Cpath style='stroke:%23000000;stroke-width:174;stroke-linecap:butt;' d='M 4960,9685 A 4228 4228 0 0 1 8976 9732 '%3E%3C/path%3E%3C/g%3E%3C/svg%3E");
    display: block;
    height: 13em;
    padding: 2em 1em;
    background: #fff;
}

.ptx-toc > ul:first-child > li:last-child {
    border-bottom: 4px solid #669;
}



/**** Use serif font for Roman numerals ****/
/* .ptx-TOC-codenumber  */
.ptx-toc a > .codenumber {
    font-family:  "PT Serif", "Times New Roman", Times, serif;
    grid-area: toc-codenumber;
}

/* .ptx-TOC-contents */
.ptx-toc a > .title {
    grid-area: toc-content;
}

.ptx-toc.depth0 ul.structural {
    display: none;
}
.ptx-toc.depth1 ul.structural ul.structural {
    display: none;
}
.ptx-toc.depth2 ul.structural ul.structural ul.structural {
    display: none;
}
.ptx-toc.depth3 ul.structural ul.structural ul.structural ul.structural {
    display: none;
}
.ptx-toc.depth4 ul.structural ul.structural ul.structural ul.structural ul.structural {
    display: none;
}


/* Hide all but active area of book */
.ptx-toc.focused ul.structural:not(.contains-active) > li {
    display: none;
}
.ptx-toc.focused ul.structural li.active > ul > li {
    display: block;
}

/* Hooks for js based switching */
.ptx-toc.focused ul.structural:not(.contains-active) > li.visible {
    display: block;
}
.ptx-toc.focused ul.structural li.active > ul > li.hidden {
    display: none ;
}


.ptx-toc.focused  > ul.structural > li:not(:first-child) {
    margin-top: 0em;
}
.ptx-toc.focused ul.structural li ul.structural a:hover {
    border: 0;
}


.toc-title-box {
    display: flex;
}

.ptx-toc ul.structural li .toc-title-box a {
    flex: 1 1;
}

.ptx-toc.focused .toc-expander {
    border: 0;
    padding: 2px 5px;
    background: inherit;
    color: inherit;
    display: flex;
    align-items: center;
}

.ptx-toc.focused .toc-expander .icon {
    font-size: 30px;
    line-height: 18px;
    font-variation-settings: 'wght' 200;
}

.ptx-toc.focused .toc-expander:is(:hover) {
    background-color: var(--highlighttoc);
    color: var(--highlighttoctext);
}

.ptx-toc.focused .toc-expander:is(:hover) .icon {
    fill: var(--highlighttoctext);
}

.ptx-toc.focused .toc-item.expanded > .toc-title-box > .toc-expander > .icon {
    transform: rotate(-90deg);
}

/* Part colors fall back to same as chapter if not defined 
   Defined here and not in setcolors so that colors_ file can override as include
    order is toc/colors/setcolors */
:root {
    --parttoc: var(--chaptertoc);
    --parttoctext: var(--chaptertoctext);
    --parttocactive: var(--documenttitle);
    --parttoctextactive: var(--chaptertoctextactive);
}
/* But if browser supports, make parts very slightly darker than chapters */
@supports (background: color-mix(in srgb, red 50%, blue)) {
    :root {
        --parttoc: color-mix(in srgb, var(--chaptertoc), black 15%);
    }
}