/*--------------------------------------------------------------
# DBTN EXTRAS (added 2026-09-04)
# Styles for the article enhancements: navbar search, reading
# progress bar, table of contents, code-block copy buttons and CLI
# colouring, "Discuss on Reddit" box, related articles, and the
# print / save-as-PDF layout. Colours come from the theme tokens in
# main.css so light and dark mode both work.
--------------------------------------------------------------*/

/* ---- navbar search ---- */
.dbtn-nav-search {
  display: flex; align-items: center; gap: 8px; margin: 0;
  background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(226, 232, 240, 0.25);
  border-radius: 999px; padding: 0 12px; height: 36px; color: var(--nav-color); transition: 0.2s;
}
.dbtn-nav-search:focus-within { border-color: var(--nav-hover-color); background: rgba(255, 255, 255, 0.1); }
.dbtn-nav-search i { font-size: 14px; opacity: 0.8; }
.dbtn-nav-search input {
  background: transparent; border: 0; outline: none; color: var(--nav-color);
  font-family: var(--nav-font); font-size: 14px; width: 150px; transition: width 0.2s;
}
.dbtn-nav-search input::placeholder { color: rgba(226, 232, 240, 0.55); }
.dbtn-nav-search input:focus { width: 220px; }
.dbtn-nav-search input::-webkit-search-cancel-button { filter: invert(1); opacity: 0.6; }
@media (min-width: 1200px) {
  .navmenu .dbtn-nav-search-li { margin-left: 12px; }
}
@media (max-width: 1199px) {
  .navmenu .dbtn-nav-search-li { padding: 10px 20px; }
  .navmenu .dbtn-nav-search { border-radius: 6px; }
  .navmenu .dbtn-nav-search input, .navmenu .dbtn-nav-search input:focus { width: 100%; }
}

/* ---- reading progress ---- */
.dbtn-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 10001; pointer-events: none; }
.dbtn-progress span { display: block; height: 100%; width: 0; background: var(--accent-color); box-shadow: 0 0 6px rgba(14, 165, 233, 0.6); }

/* ---- article meta row additions ---- */
.dbtn-meta-actions { margin-left: auto; display: flex; gap: 8px; }
.dbtn-print {
  display: inline-flex; align-items: center; gap: 5px; font: inherit; font-size: 12px; font-weight: 600;
  color: var(--dbtn-muted); background: transparent; border: 1px solid var(--dbtn-border); border-radius: 6px;
  padding: 4px 10px; cursor: pointer; transition: 0.2s;
}
.dbtn-print:hover { color: var(--accent-color); border-color: var(--accent-color); }

/* ---- table of contents ---- */
.dbtn-toc { margin: 0 0 28px; }
.dbtn-toc details { background: var(--dbtn-chip-bg); border: 1px solid var(--dbtn-chip-border); border-radius: 8px; padding: 12px 16px; }
.dbtn-toc summary {
  cursor: pointer; list-style: none; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--dbtn-chip-text); display: flex; align-items: center; gap: 8px;
}
.dbtn-toc summary::-webkit-details-marker { display: none; }
.dbtn-toc summary::after { content: '\F282'; font-family: 'bootstrap-icons'; margin-left: auto; font-size: 12px; transition: transform 0.2s; }
.dbtn-toc details[open] summary::after { transform: rotate(180deg); }
.dbtn-toc-count { background: var(--dbtn-chip-border); color: var(--dbtn-chip-text); border-radius: 10px; padding: 0 7px; font-size: 11px; }
.dbtn-toc ol { margin: 12px 0 0; padding-left: 22px; font-size: 14px; line-height: 1.5; }
.dbtn-toc li { margin: 0 0 6px; }
.dbtn-toc li.is-sub { list-style: circle; margin-left: 18px; font-size: 13px; }
.dbtn-toc a { color: var(--dbtn-body-text); text-decoration: none; }
.dbtn-toc a:hover, .dbtn-toc a.is-active { color: var(--accent-color); }
.dbtn-toc a.is-active { font-weight: 600; }
.blog-content h2[id], .blog-content h3[id] { scroll-margin-top: 90px; }

/* ---- code blocks ---- */
.dbtn-code { position: relative; }
.dbtn-copy {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  display: inline-flex; align-items: center; gap: 5px; font: inherit; font-size: 11px; font-weight: 600; letter-spacing: 0.02em;
  color: #cbd5e1; background: rgba(30, 41, 59, 0.9); border: 1px solid #334155; border-radius: 6px;
  padding: 4px 9px; cursor: pointer; opacity: 0.55; transition: 0.15s;
}
.dbtn-code:hover .dbtn-copy, .dbtn-copy:focus-visible { opacity: 1; }
.dbtn-copy:hover { color: #fff; border-color: var(--accent-color); }
.dbtn-copy.is-done { color: #86efac; border-color: #86efac; opacity: 1; }
.blog-content pre[style] + .dbtn-copy, .dbtn-code pre[style] ~ .dbtn-copy { background: rgba(15, 23, 42, 0.85); }
.blog-content pre { padding-right: 84px; }
.tok-prompt { color: #7dd3fc; }
.tok-cmd { color: #f8fafc; font-weight: 600; }
.tok-comment { color: #7c8aa5; font-style: italic; }
.tok-ip { color: #fcd34d; }
.tok-str { color: #86efac; }

/* ---- discuss on reddit ---- */
.dbtn-share {
  margin-top: 28px; padding: 20px 22px; border-radius: 10px;
  background: var(--dbtn-chip-bg); border: 1px solid var(--dbtn-chip-border);
}
.dbtn-share-title { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; color: var(--heading-color); margin-bottom: 6px; }
.dbtn-share-title i { color: #ff4500; font-size: 20px; }
.dbtn-share p { font-size: 13px; color: var(--dbtn-muted); margin: 0 0 14px; line-height: 1.6; }
.dbtn-share-links { display: flex; flex-wrap: wrap; gap: 8px; }
.dbtn-share-btn {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; text-decoration: none;
  color: #fff; background: #ff4500; border: 1px solid #ff4500; border-radius: 6px; padding: 7px 14px; transition: 0.2s;
}
.dbtn-share-btn:hover { background: #e03d00; border-color: #e03d00; color: #fff; }
.dbtn-share-btn--ghost { color: var(--dbtn-chip-text); background: transparent; border-color: var(--dbtn-chip-border); }
.dbtn-share-btn--ghost:hover { color: #fff; background: var(--accent-color); border-color: var(--accent-color); }

/* ---- related articles ---- */
.dbtn-related { margin-top: 32px; }
.dbtn-related h2 { font-size: 13px; font-weight: 700; color: var(--heading-color); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; display: flex; align-items: center; gap: 6px; }
.dbtn-related h2 i { color: var(--accent-color); }
.dbtn-related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 767px) { .dbtn-related-grid { grid-template-columns: 1fr; } }
.dbtn-related-card {
  display: flex; flex-direction: column; text-decoration: none; overflow: hidden;
  background: var(--surface-color); border: 1px solid var(--dbtn-border); border-radius: 10px; box-shadow: var(--dbtn-shadow);
  transition: box-shadow 0.2s, transform 0.2s;
}
.dbtn-related-card:hover { box-shadow: var(--dbtn-shadow-hover); transform: translateY(-2px); }
.dbtn-related-card img { width: 100%; height: 110px; object-fit: cover; display: block; }
.dbtn-related-body { padding: 12px 14px 14px; }
.dbtn-related-title { display: block; font-size: 14px; font-weight: 600; line-height: 1.4; color: var(--heading-color); }
.dbtn-related-card:hover .dbtn-related-title { color: var(--accent-color); }
.dbtn-related-meta { display: block; margin-top: 6px; font-size: 11px; color: var(--dbtn-muted-2); }

/* ---- feed link in the footer ---- */
.dbtn-feed-link i { color: #f59e0b; margin-right: 4px; }

/* ---- print / save as PDF ---- */
@media print {
  @page { margin: 14mm 12mm; }
  html, body { background: #fff !important; color: #000 !important; }
  #header, #footer, #sidebar, #sidebar-toggle, .scroll-top, .dbtn-progress, .dbtn-toc, .dbtn-share, .dbtn-related,
  .dbtn-meta-actions, .dbtn-copy, .mobile-nav-toggle, ins.adsbygoogle, [data-aos] > .aos-init { display: none !important; }
  main.main > div:first-child { background: none !important; border: 0 !important; padding: 0 0 8px !important; }
  main.main > div:first-child nav { display: none !important; }
  main.main h1 { color: #000 !important; font-size: 22pt !important; max-width: none !important; }
  .container { max-width: none !important; padding: 0 !important; }
  #main-content { width: 100% !important; flex: 0 0 100% !important; max-width: 100% !important; }
  article { border: 0 !important; box-shadow: none !important; border-radius: 0 !important; background: #fff !important; }
  article > div[style*="max-height"] { display: none !important; }   /* hero image */
  article > div { padding: 0 !important; }
  .blog-content, .blog-content p, .blog-content li, .blog-content td { color: #000 !important; font-size: 10.5pt !important; line-height: 1.5 !important; }
  .blog-content h2, .blog-content h3, .blog-content h4 { color: #000 !important; page-break-after: avoid; break-after: avoid; }
  .blog-content h2 { border-bottom-color: #999 !important; }
  .blog-content a { color: #000 !important; text-decoration: none !important; }
  .blog-content pre, .blog-content pre[style] {
    background: #f4f4f4 !important; color: #000 !important; border: 1px solid #bbb !important; border-radius: 4px !important;
    padding: 8px 10px !important; white-space: pre-wrap !important; word-break: break-word !important; overflow: visible !important;
    font-size: 9pt !important; line-height: 1.4 !important; page-break-inside: avoid; break-inside: avoid;
  }
  .blog-content pre span, .blog-content pre code { color: #000 !important; background: none !important; }
  .tok-comment { color: #555 !important; }
  .tok-prompt, .tok-cmd { font-weight: 700; }
  .blog-content code { background: #eee !important; color: #000 !important; }
  .blog-content table { page-break-inside: auto; }
  .blog-content th { background: #ddd !important; color: #000 !important; }
  .blog-content img, .blog-content figure { max-width: 100% !important; page-break-inside: avoid; }
  .blog-content svg { max-width: 100% !important; height: auto !important; }
}