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/* ============================================================
   TechTrail customisations (appended; survives Casper updates)
   Regenerated during the 5.7.0 -> 5.12.1 rebase.
   ============================================================ */

/* --- Custom components: header overlay, post header, author card, TOC, tag pills --- */
.post-card-tag { border-radius: 12px;
    color: #fff;
    display: inline-block;
    margin: 1px 5px 1px 0;
    padding: 5px; }
.article-tag { margin-bottom: 16px;
    font-size: 1.6rem; }
figure.article-image { position: relative; }
.article-date { color: #fff;
    font-style: italic;
    font-weight: 200;
    left: 50%;
    margin-bottom: 0;
    margin-top: 4.5rem;
    max-width: 1000px;
    min-width: 400px;
    opacity: .75;
    position: absolute;
    text-align: center;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 1; }
#techtrail-header-overlay { background: linear-gradient( 180deg,#657998 0%,#1c110a 100%);
    height: 100%;
    left: 0;
    opacity: .75;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 0;
    z-index: 1; }
.m-author { border-color: var(--secondary-subtle-color);
    border-width: 1px 0;
    margin: max(3.2vmin, 24px) auto;
    padding: 0px 40px; }
@media only screen and (min-width: 48rem) { .m-author { display: flex;
        justify-content: center;
        padding: 0px 40px; } }
@media only screen and (min-width: 80rem) { .m-author { padding: 0px 40px; } }
@media only screen and (min-width: 48rem) { .m-author__content { display: flex;
        max-width: 1000px;
        padding: 20px 0; } }
.m-author__picture { align-items: center;
    display: flex;
    justify-content: center;
    margin: 0 auto 25px;
    width: 150px; }
@media only screen and (min-width: 48rem) { .m-author__picture { margin: 0 30px 0 0;
        width: 150px; } }
@media only screen and (min-width: 48rem) { .rtl .m-author__picture { margin: 0 0 0 30px; } }
.m-author__info { text-align: center; }
@media only screen and (min-width: 48rem) { .m-author__info { display: flex;
        flex-direction: column;
        flex: 1;
        justify-content: center;
        text-align: left; } }
@media only screen and (min-width: 48rem) { .rtl .m-author__info { text-align: right; } }
.m-author__name { color: var(--link-color);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: 0.2px;
    line-height: 1.3;
    margin: 0 0 15px; }
@media only screen and (min-width: 48rem) { .m-author__name { letter-spacing: 0.3px; } }
.m-author__bio { font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6em; }
@media only screen and (min-width: 48rem) { .m-author__bio { margin-bottom: 15px; } }
.m-author-picture { display: block;
    height: 90px;
    width: 90px; }
@media only screen and (min-width: 48rem) { .m-author-picture { height: 150px;
        width: 150px; } }
.m-author-picture div { background-position: 50%;
    background-repeat: no-repeat;
    background-size: cover;
    border-radius: 50%;
    height: 100%;
    width: 100%; }
.m-author-links { list-style-type: none;
    margin: 0;
    padding: 0;
    text-align: center; }
@media only screen and (min-width: 48rem) { .m-author-links { text-align: left; } }
.m-author-links li { display: inline-block;
    margin: 0 0; }
.m-author-links li:first-of-type { margin-left: 0; }
.m-author-links li:last-of-type { margin-right: 0; }
.rtl .m-author-links { direction: ltr;
    text-align: right; }
.u_placeholder { display: flex;
    height: 65vh; }
.article-image { height: 65vh;
    overflow: hidden;
    position: absolute;
    width: 100%;
    z-index: 1 }
.article-image img { height: 65vh;
    object-fit: cover;
    object-position: 50% 50%;
    overflow: hidden;
    width: 100%; }
.article-header { margin-top: auto;
    padding: 32px 0;
    position: relative;
    width: 100%; }
.article-title { color: #fff;
    font-size: clamp(3.2rem, 5vw, 5.2rem);
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
    text-align: left;
    z-index: 2; }
.article-tags { z-index: 2; }
.article-tag { border-radius: 16px;
    color: #fff;
    display: inline-block;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: .01em;
    margin: 1px 0 1px 0;
    padding: 4px 10px; }
.article-meta { color: #fff;
    font-size: 15px;
    opacity: 75%;
    padding: 4px 10px;
    z-index: 2; }
h1::before, h2::before, h3::before, h4::before, h5::before, h6::before { display: block;
    content: " ";
    height: 60px;
    margin-top: -60px;
    visibility: hidden; }
.gh-content { position: relative; }
.gh-toc strong { font-size: 1.6rem;
    font-weight: 700; }
.toc { margin-top: 10px;
    font-size: 1.5rem; }
.toc > .toc-list { position: relative;
    overflow: hidden; }
a.toc-link { display: inline-flex;
    height: 100%;
    font-weight: 400;
    padding: 2px 0;
    text-decoration: none;
    color: #30353c }
a.is-active-link { font-weight: 500; }
a.toc-link:hover { color: black; }
@media (max-width: 1300px) { .gh-sidebar { display: none; } }
@media (min-width: 1300px) { .gh-sidebar { position: absolute;
        top: 0;
        bottom: 0;
        margin-top: max(3.2vmin, 24px);
        grid-column: wide-start / main-start; } }
@media (min-width: 1300px) { .gh-toc { position: sticky; 
        top: 7vmin;
        overflow-y: auto; } }
.gh-toc .is-active-link::before { background-color: var(--ghost-accent-color); }

/* --- Overrides of stock Casper behaviour (TechTrail look) --- */
.site-header-cover { z-index: -1; }
.has-cover .site-header-content { min-height: 48vh; }
.gh-head { height: 66px; }
.has-cover:not(.home-template) .gh-head { position: sticky; top: 0; z-index: 10; } /* sticky, not fixed: stays in flow so Ghost's announcement bar can push the page down */
.gh-head-inner { grid-template-columns: auto 1fr auto; }
.gh-head-logo { padding-left: 10px; }
.gh-head-menu { justify-content: flex-end; }
.post-card-tags { margin: 10px 0; }
.post-card-meta { display: flex; align-items: center; gap: 6px; }
.article { padding: 0; margin-top: 0; } /* header is sticky (in flow) so no offset needed */
.page-template .article-header { padding-bottom: max(3.2vmin, 28px); }
.gh-canvas .article-image { grid-column: full-start / full-end; margin: 0; }
.gh-canvas .article-image img { margin: 0; width: 100%; height: 65vh; object-fit: cover; }
.gh-content pre { max-height: 450px; }
.gh-content table:not(.gist table) { display: inline-table; font-family: var(--font-serif); font-size: 2rem; background: none; }
.gh-content table:not(.gist table) td:first-child { background-image: none; }
.gh-content table:not(.gist table) td:last-child { background-image: none; }
.gh-content table:not(.gist table) th { font-size: 2.2rem; font-family: var(--font-sans); background-color: transparent; }
.article-comments { margin: 6vmin 0 0; }
.site-footer { background: #30353c; margin: max(2.4vmin, 36px) 0 0; padding-bottom: 24px; }


/* Fallback header for posts without a feature image */
.article-image-fallback { background: #383f49; min-height: 32vh; }
.article-image-fallback + .article-header .article-title { color: #fff; }

/* Keep cover title/description cleanly above the header overlay if shown */
.site-header-inner { z-index: 1; }
#techtrail-header-overlay { pointer-events: none; }

/* Sam deleted these stock paddings in 5.7.0; re-neutralise them (fixes gap above post feature image) */
.post-template .article { padding: 0; }
.post-template .article-header { padding: 0 0 max(6.4vmin, 40px); }

/* Hard-coded design intent (independent of Ghost design settings, which persist across theme uploads) */
/* Always show the nav wordmark, including on the homepage */
.home-template .gh-head .gh-head-logo { display: block !important; }
/* 5.12.1 added a 64px right margin to the nav menu in left-logo layout; remove it (gap between Home and search) */
@media (min-width: 992px) {
  .is-head-left-logo .gh-head-menu { margin-right: 0; }
}
/* Body prose is always sans (Roboto stack), regardless of the stored body_font setting */
.gh-content > blockquote:not([class]), .gh-content > ol, .gh-content > ul, .gh-content > dl, .gh-content > p,
.gh-content .kg-callout-card .kg-callout-text,
.gh-content .kg-toggle-card .kg-toggle-content > ol, .gh-content .kg-toggle-card .kg-toggle-content > ul, .gh-content .kg-toggle-card .kg-toggle-content > p {
  font-family: var(--font-sans);
}

/* Missed in the first migration pass (multi-selector rules; comma-normalisation bug in the diff) */
/* Sam's wider content column: 1000px body instead of stock 720px */
.gh-canvas, .kg-width-full.kg-content-wide { --main: min(var(--content-width, 1000px), 100% - var(--gap) * 2); }
/* Wide cards (galleries etc.) stay within the body column, per Sam's original design */
.kg-width-wide, .kg-content-wide > div { grid-column: main-start / main-end; }
:is(.tag-template, .author-template) .post-feed { margin-top: 64px; }
.post-card-excerpt { margin-top: 0; }
.gh-content > [id]:not(:first-child) { margin: max(3.2vmin, 24px) 0 0; }
@media (max-width: 767px) {
  #gh-head { height: 66px; z-index: 100000000; }
  #gh-head .gh-head-brand { grid-template-columns: 40px 1fr auto auto; }
}

/* Dark-mode coverage for TechTrail custom components (stock dark rules don't know about them) */
html.dark-mode .post-card-meta a { color: var(--color-secondary-text); }
html.dark-mode .m-author__name a { color: #fff; }
html.dark-mode .m-author__bio { color: rgba(255,255,255,0.75); }
html.dark-mode .gh-toc strong { color: rgba(255,255,255,0.9); }
html.dark-mode a.toc-link { color: var(--color-secondary-text); }
html.dark-mode a.is-active-link, html.dark-mode a.toc-link:hover { color: #fff; }
@media (prefers-color-scheme: dark) {
  html.auto-color .post-card-meta a { color: var(--color-secondary-text); }
  html.auto-color .m-author__name a { color: #fff; }
  html.auto-color .m-author__bio { color: rgba(255,255,255,0.75); }
  html.auto-color .gh-toc strong { color: rgba(255,255,255,0.9); }
  html.auto-color a.toc-link { color: var(--color-secondary-text); }
  html.auto-color a.is-active-link, html.auto-color a.toc-link:hover { color: #fff; }
}

/* Dark-mode: byline social icons (fill/stroke: currentColor inherits link colour) */
html.dark-mode .m-author-links a { color: rgba(255,255,255,0.75); }
html.dark-mode .m-author-links a:hover { color: #fff; }
@media (prefers-color-scheme: dark) {
  html.auto-color .m-author-links a { color: rgba(255,255,255,0.75); }
  html.auto-color .m-author-links a:hover { color: #fff; }
}

/* Nav mark: optical sizing against the wordmark. The circle has internal padding, so it
   needs to run larger than the text cap height to read as the same visual weight. */
.gh-head-brand { align-items: center; }
.gh-head-brand > a:first-child { display: inline-flex; align-items: center; margin-right: 9px; }
.gh-head-brand > a:first-child img { display: block; width: 30px; height: 30px; }
@media (max-width: 767px) {
  #gh-head .gh-head-brand { grid-template-columns: 30px 1fr auto auto; }
}

/* Nav mark must never squash: the grid/flex parents can compress it at narrow widths */
.gh-head-brand > a:first-child { flex: 0 0 auto; }
.gh-head-brand > a:first-child img {
  width: 30px; height: 30px;
  min-width: 30px; max-width: none;
  flex: 0 0 auto;
  object-fit: contain;   /* belt and braces: even a squashed box keeps the artwork square */
}

/* Nav mark alignment: blue stack spans cap-height to baseline, nozzle sits above the cap line.
   Wordmark is 2.6rem (26px) Roboto, cap height 0.711em = 18.5px. The stack is the bottom 83.3%
   of the artwork, so image height = 18.5 / 0.833 = 22px, with its bottom edge on the baseline. */
.gh-head-brand { align-items: baseline; }
.gh-head-brand > a:first-child { display: inline-block; flex: 0 0 auto; margin-right: 9px; }
.gh-head-brand > a:first-child img {
  display: block;
  width: 22px; height: 22px;
  min-width: 22px; max-width: none;
  object-fit: contain;
}
.gh-head-brand .gh-burger { align-self: center; }
@media (max-width: 767px) {
  #gh-head .gh-head-brand { grid-template-columns: 22px 1fr auto auto; }
}

/* Optical nudge for the whole brand block (mark + wordmark) within the header bar.
   The block is geometrically cap-centred already; this is a taste adjustment.
   SINGLE KNOB: change the top value. Positive = lower, negative = higher. */
.gh-head-brand { position: relative; top: 3px; }

/* ============================================================
   Typography: IBM Plex Sans + IBM Plex Mono (replaced Roboto)
   Loaded from Google Fonts in default.hbs, subset to 400/700
   plus italics (Sans) and 400 plus italic (Mono).
   ============================================================ */

/* Override the stock Casper font stacks. Declared here rather than edited into
   screen.css so the customisation survives a Casper upgrade. Roboto stays deep
   in the fallback chain as the Android system font. */
:root {
  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Headings are always the sans stack, regardless of the stored title_font design
   setting. Matches the existing hard-coded rule for body prose above: design
   settings persist across theme uploads, so intent that must never vary is
   pinned in CSS rather than left to admin state. */
h1, h2, h3, h4, h5, h6,
.site-title, .site-description, .gh-head-logo,
.post-card-title, .article-title, .footer-cta-title,
.gh-content > [id],
.kg-toggle-card .kg-toggle-heading-text,
.kg-header-card h2.kg-header-card-header {
  font-family: var(--font-sans);
}

/* Code: Prism's stylesheet loads AFTER screen.css and sets its own font-family on
   code[class*="language-"] / pre[class*="language-"] (0,1,1). These selectors are
   deliberately more specific so Plex Mono actually wins. Verify in DevTools, not
   by assuming. */
.gh-content pre,
.gh-content code,
.gh-content :not(pre) > code,
.gh-content pre[class*="language-"],
.gh-content code[class*="language-"],
.gh-content pre[class*="language-"] code[class*="language-"] {
  font-family: var(--font-mono);
}