/*
 * Custom CSS file. Override it as you like.
 *
 * Credits to @killercup (https://gist.github.com/killercup); Extracted from this Gist:
 *   https://gist.github.com/killercup/5917178
 * Substantial modifications made by natolambert
 */

html {
    font-size: 100%;
    overflow-y: scroll;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    color: #444;
    font-family: Georgia, Palatino, 'Palatino Linotype', Times, 'Times New Roman', serif;
    font-size: 12px;
    line-height: 1.7;
    padding: 1em;
    margin: auto;
    max-width: 42em;
    background: #fefefe;
}

a {
    color: #0645ad;
    text-decoration: none;
}

a:visited {
    color: #0b0080;
}

a:hover {
    color: #06e;
}

a:active {
    color: #faa700;
}

a:focus {
    outline: thin dotted;
}

*::-moz-selection {
    background: rgba(255, 255, 0, 0.3);
    color: #000;
}

*::selection {
    background: rgba(255, 255, 0, 0.3);
    color: #000;
}

a::-moz-selection {
    background: rgba(255, 255, 0, 0.3);
    color: #0645ad;
}

a::selection {
    background: rgba(255, 255, 0, 0.3);
    color: #0645ad;
}

p {
    margin: 1em 0;
}

img {
    max-width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: #111;
    line-height: 125%;
    margin-top: 2em;
    font-weight: normal;
    position: relative;
}

/* Heading anchor link styles */
.header-anchor {
    opacity: 0;
    font-size: 0.8em;
    vertical-align: middle;
    position: absolute;
    margin-left: 0.3em;
    transition: opacity 0.2s ease-in-out;
}

h2:hover .header-anchor,
h3:hover .header-anchor,
h4:hover .header-anchor,
h5:hover .header-anchor,
h6:hover .header-anchor {
    opacity: 1;
}

h4,
h5,
h6 {
    font-weight: bold;
}

h1 {
    font-size: 2.5em;
}

.title {
    font-size: 2.5em;
    color: #111;
    line-height: 125%;
    margin-top: 2em;
    font-weight: normal;
    hyphens: none;
    -webkit-hyphens: none;
    -moz-hyphens: none;
    -ms-hyphens: none;
    word-break: keep-all;
}

h2 {
    font-size: 2em;
}

h3 {
    font-size: 1.5em;
}

h4 {
    font-size: 1.2em;
}

h5 {
    font-size: 1em;
}

h6 {
    font-size: 0.9em;
}

blockquote {
    color: #666666;
    margin: 0;
    padding-left: 3em;
    border-left: 0.5em #EEE solid;
}

hr {
    display: block;
    height: 2px;
    border: 0;
    border-top: 1px solid #aaa;
    border-bottom: 1px solid #eee;
    margin: 1em 0;
    padding: 0;
}

pre,
code,
kbd,
samp {
    color: #000;
    font-family: monospace, monospace;
    _font-family: 'courier new', monospace;
    font-size: 0.85em;
}

pre {
    white-space: pre;
    line-height: 1.4;
    padding: 1em 1.2em;
    background-color: #f6f6f6;
    border: 1px solid #e8e8e8;
    border-radius: 4px;
    overflow-x: auto;
}

/* Override pandoc's .sourceCode { overflow: visible } which kills scrollbars */
pre.sourceCode {
    overflow-x: auto !important;
}

p code, li code {
    background-color: #f0f0f0;
    padding: 0.15em 0.35em;
    border-radius: 3px;
}


b,
strong {
    font-weight: bold;
}

dfn {
    font-style: italic;
}

ins {
    background: #ff9;
    color: #000;
    text-decoration: none;
}

mark {
    background: #ff0;
    color: #000;
    font-style: italic;
    font-weight: bold;
}

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sup {
    top: -0.5em;
}

sub {
    bottom: -0.25em;
}

ul,
ol {
    margin: 1em 0;
    padding: 0 0 0 2em;
}

li p:last-child {
    margin-bottom: 0;
}

ul ul,
ol ol {
    margin: .3em 0;
}

dl {
    margin-bottom: 1em;
}

dt {
    font-weight: bold;
    margin-bottom: .8em;
}

dd {
    margin: 0 0 .8em 2em;
}

dd:last-child {
    margin-bottom: 0;
}

img {
    border: 0;
    -ms-interpolation-mode: bicubic;
    vertical-align: middle;
}

figure {
    display: block;
    text-align: center;
    margin: 1em 0;
}

figure img {
    border: none;
    margin: 0 auto;
}

figcaption {
    font-size: 0.8em;
    font-style: italic;
    margin: 0 0 .8em;
}

/* for html tables */
table {
    margin-bottom: 2em;
    border-bottom: 1px solid #ddd;
    border-right: 1px solid #ddd;
    border-spacing: 0;
    box-shadow: none;
    border: none;
    border-collapse: collapse;
    margin-left: auto;
    margin-right: auto;
    width: auto; /* Keeps natural width; wrapper handles overflow */
    display: table;
}

th {
    padding: 12px;
    text-align: center;
    background-color: #eee;
    border: 1px solid #ddd;
}

td {
    padding: 12px;
    text-align: left; /* Keeps data cells left-aligned */
    border: 1px solid #ddd;
    vertical-align: top;
}

.table-scroll {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 1.5em auto 2em;
}

.table-scroll table {
    margin: 0 auto;
    display: table;
    width: auto;
    width: fit-content;
    width: max-content;
}

.table-wrap {
    margin: 1.5em auto 2em;
}

.table-wrap table {
    margin: 0 auto;
}

.table-scroll::-webkit-scrollbar {
    height: 8px;
}

.table-scroll::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.table-scroll::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}

div.abstract {
    font-size: 1em;
}

#changelog,
#acknowledgements,
#citation {
    font-size: 0.9em;
}

.author {
    font-size: 1.2em;
    text-align: center;
}

/* Target only mobile screens */
@media only screen and (max-width: 479px) {
    body {
        font-size: 14px;
    }
}

@media only screen and (min-width: 480px) {
    body {
        font-size: 15px;
    }
}

@media only screen and (min-width: 768px) {
    body {
        font-size: 16px;
    }
}

@media print {
    * {
        background: transparent !important;
        color: black !important;
        filter: none !important;
        -ms-filter: none !important;
    }
    body {
        font-size: 12pt;
        max-width: 100%;
    }
    a,
    a:visited {
        text-decoration: underline;
    }
    hr {
        height: 1px;
        border: 0;
        border-bottom: 1px solid black;
    }
    a[href]:after {
        content: " (" attr(href) ")";
    }
    abbr[title]:after {
        content: " (" attr(title) ")";
    }
    .ir a:after,
    a[href^="javascript:"]:after,
    a[href^="#"]:after {
        content: "";
    }
    pre,
    blockquote {
        border: 1px solid #999;
        padding-right: 1em;
        page-break-inside: avoid;
    }
    tr,
    img {
        page-break-inside: avoid;
    }
    img {
        max-width: 100% !important;
    }
    @page :left {
        margin: 15mm 20mm 15mm 10mm;
    }
    @page :right {
        margin: 15mm 10mm 15mm 20mm;
    }
    p,
    h2,
    h3 {
        orphans: 3;
        widows: 3;
    }
    h2,
    h3 {
        page-break-after: avoid;
    }
}

.dropdown-content {
  display: none;
}



thead {
    background-color: #f5f5f5;
}


.dropdown-content.open {
  display: block;
  max-height: 2000px;
}
/* Header Nav Block */
    .chapter-nav {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        /* grid-template-rows: auto auto;  */
        gap: 0.5rem;
        padding: 0.5rem;
        max-width: 1200px;
        text-align: left;
    }  
    .section {
        background-color: #ffffff;
        padding-top: 5px;
        padding-right: 12px;
        padding-bottom: 8px;
        padding-left: 12px;
        border-radius: 5px;
        text-align: left;
    }
  .dropdown-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: #f8f8f8;  /* Unified with section background */
  }
  /* dropdown row */
  .dropdown-button {
    width: 100%;
    text-align: left;
    padding: 0.5rem;
    background: #f8f8f8;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
  }
  /* carrot button */
  .dropdown-button .chevron {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
  }
  /* dropdown animation */
  .dropdown-button[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
  }
  .section h3 {
    font-weight: bold;
    font-size: 0.8rem;
    margin-top: 5px;
    margin-bottom: 5px;  /* or whatever bottom spacing you prefer */
  }
  .section ol, .section ul {
    margin: 0;
    padding-left: 20px;
    text-align: left;
  }
  .section li {
    font-size: 12px;
    line-height: 1.3;
    margin-bottom: 3px;
    text-align: left;
  }
  .section a {
    color: #0066cc;
    text-decoration: none;
  }
  .section a:hover {
    text-decoration: underline;
  }

  /* Mobile Responsiveness */
  @media screen and (max-width: 768px) {
    .chapter-nav {
      grid-template-columns: 1fr;
    }
    .section {
      margin-bottom: 10px;
    }
    .section p {
      font-size: 16px;
    }
    .section li {
      font-size: 14px;
    }
  }

/* Citation tooltips */
.citation-tooltip {
  position: absolute;
  max-width: 350px;
  padding: 8px 12px;
  background: #fff;
  color: #333;
  font-family: Georgia, Palatino, 'Palatino Linotype', Times, 'Times New Roman', serif;
  font-size: 0.85em;
  line-height: 1.5;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease-in;
}

/* Pagefind search styling inside nav */
#search {
    padding: 0.5rem;
}
#search .pagefind-ui__search-input {
    font-size: 0.85rem;
    border: none;
    border-radius: 5px;
}
#search .pagefind-ui__form::before {
    border-radius: 5px;
}
#search .pagefind-ui__result {
    text-align: left;
}
#search .pagefind-ui__result-excerpt {
    text-align: left;
}

/* Copy code button */
.code-wrapper {
  position: relative;
}
.math-wrapper {
  position: relative;
  display: block;
}
.copy-code-button {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 6px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #fff;
  color: #666;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease-in;
  line-height: 1;
  z-index: 1;
}
.code-wrapper:hover .copy-code-button {
  opacity: 0.7;
}
.copy-math-button {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  padding: 2px 5px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.92);
  color: #666;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease-in, color 0.15s ease-in, border-color 0.15s ease-in;
  line-height: 1;
  z-index: 2;
}
.math-wrapper:hover .copy-math-button {
  opacity: 0.55;
}
.copy-code-button:hover {
  opacity: 1 !important;
  border-color: #bbb;
  color: #333;
}
.copy-math-button:hover,
.copy-math-button:focus-visible {
  opacity: 1 !important;
  border-color: #d0d0d0;
  color: #333;
}
.copy-code-button.copied {
  opacity: 1 !important;
  color: #22863a;
  border-color: #22863a;
}
.copy-math-button.copied {
  opacity: 1 !important;
  color: #22863a;
  border-color: #22863a;
}

/* View Source link in ToC */
.toc-view-source {
  margin-top: 0.3em;
  list-style: none;
}
.toc-view-source a {
  color: #888 !important;
  font-size: 0.9em;
}

/* Conversation chat UI */
.conversation {
    display: flex;
    flex-direction: column;
    gap: 0.5em;
    margin: 1.5em 0;
}
.conversation-message {
    position: relative;
    max-width: 85%;
    border-radius: 12px;
    padding: 0.6em 1em;
}
.conversation-message--user {
    align-self: flex-end;
    background: #0f3460;
    color: #fff;
}
.conversation-message--assistant {
    align-self: flex-start;
    background: #f4f4f8;
    color: #333;
}
.conversation-message--system {
    align-self: center;
    border: 1px solid #ddd;
    background: transparent;
    color: #666;
    font-style: italic;
    font-size: 0.9em;
    max-width: 90%;
}
.conversation-role {
    font-size: 0.65em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.15em;
    opacity: 0.75;
}
.conversation-message--user .conversation-role {
    color: rgba(255, 255, 255, 0.85);
}
.conversation-content p {
    margin: 0 0 0.3em;
}
.conversation-content p:last-child {
    margin-bottom: 0;
}
.conversation-content code {
    font-size: 0.85em;
}
.conversation-message--user a {
    color: #8ec8f8;
}
.conversation-message--user code {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}
@media screen and (max-width: 480px) {
    .conversation-message {
        max-width: 95%;
    }
}
.copy-conversation-button {
    position: absolute;
    top: 6px;
    right: 6px;
    padding: 4px 6px;
    border: 1px solid rgba(0,0,0,0.15);
    border-radius: 4px;
    background: transparent;
    color: inherit;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s ease-in;
    line-height: 1;
}
.conversation-message:hover .copy-conversation-button {
    opacity: 0.5;
}
.copy-conversation-button:hover {
    opacity: 1 !important;
}
.copy-conversation-button.copied {
    opacity: 1 !important;
    color: #22863a;
}
.conversation-message--user .copy-conversation-button {
    border-color: rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.85);
}
.conversation-message--user .copy-conversation-button.copied {
    color: #6fcf97;
}
/* Thinking token collapsible block */
.thinking-block {
    margin: 0.4em 1.5em 0.4em 0;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 6px;
    padding: 0.4em 0.7em;
    background: rgba(0,0,0,0.03);
    font-size: 0.92em;
}
.thinking-block summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #888;
    user-select: none;
}
.thinking-content {
    margin-top: 0.3em;
    color: #555;
    font-style: italic;
}