/* =============================================================
   Print stylesheet — turn any lab view into an A4 lab report
   ============================================================= */

@page {
  size: A4;
  margin: 18mm 16mm 20mm 16mm;
  @bottom-right {
    content: "中山大学 FPGA 课程 · " counter(page) " / " counter(pages);
    font-family: "Noto Sans SC", sans-serif;
    font-size: 9pt;
    color: #6e7167;
  }
}

body {
  background: #ffffff !important;
  background-image: none !important;
  color: #161814;
  font-size: 10.5pt;
  line-height: 1.55;
}

/* Hide chrome: header, sidebar, footer, search, language toggle,
   GitHub button, copy buttons, action buttons. */
.site-header,
.lab-sidebar,
.site-footer,
.hdr-nav,
.lang-toggle,
.gh-btn,
.code-copy,
.es-btn,
.cta { display: none !important; }

/* Single-column shell — drop the sidebar grid */
.shell { display: block !important; max-width: 100% !important; padding: 0 !important; margin: 0 !important; }
.article { font-family: "Noto Sans SC", sans-serif; }

/* Lab hero — print-style cover headline */
.lab-hero {
  border-bottom: 1.5pt solid #161814;
  margin: 0 0 14pt;
  padding: 0 0 10pt;
  page-break-after: avoid;
}
.hero-title { font-size: 22pt !important; line-height: 1.15; }
.hero-sub   { font-size: 11pt !important; color: #2c2f29 !important; }
.hero-meta .num { color: #7a4f1f !important; }
.board-chip, .chip {
  background: transparent !important; color: #161814 !important;
  border: 0.75pt solid #4b4e47 !important; padding: 1pt 7pt !important;
  font-size: 8.5pt !important;
}
.file-pill {
  background: transparent !important;
  border: 0.5pt solid #6e7167 !important;
  color: #161814 !important;
  font-size: 8.5pt !important;
}

/* Headings */
.article h2 {
  font-size: 14pt !important;
  border-bottom: 0.5pt solid #d8d5cc;
  padding-bottom: 4pt;
  margin-top: 18pt !important;
  page-break-after: avoid;
}
.article h3 { font-size: 11.5pt !important; margin-top: 12pt !important; page-break-after: avoid; }

/* Body */
.article p { font-size: 10.5pt !important; line-height: 1.65 !important; color: #2c2f29 !important; }
.article :not(pre) > code {
  background: #f6f3ea !important;
  border: 0.5pt solid #d8d5cc !important;
  color: #16573a !important;
  padding: 0.5pt 3pt !important;
}

/* Code blocks — invert dark theme for paper */
.code-block {
  background: #f6f3ea !important;
  border: 0.75pt solid #d8d5cc !important;
  border-left: 2pt solid #16573a !important;
  box-shadow: none !important;
  page-break-inside: avoid;
}
.code-head {
  background: #ebe7dc !important;
  border-bottom: 0.5pt solid #d8d5cc !important;
  color: #4b4e47 !important;
}
.code-file { color: #161814 !important; }
.code-lang { color: #7a4f1f !important; }
.code-block code { color: #161814 !important; font-size: 9pt !important; line-height: 1.5 !important; }
.code-block .ln-no { color: #9a9d93 !important; }
.tok-k { color: #0f5132 !important; font-weight: 700; }
.tok-t { color: #7a4f1f !important; }
.tok-n { color: #2c2f29 !important; }
.tok-c { color: #6e7167 !important; font-style: italic; }
.tok-s { color: #8a2424 !important; }
.tok-p { color: #161814 !important; }

/* Callouts — keep semantic color but lighter */
.callout {
  border: 0.5pt solid currentColor !important;
  background: transparent !important;
  page-break-inside: avoid;
}
.callout-icon { color: inherit !important; }

/* Figures */
.figure-grid, .diff-panel {
  background: transparent !important;
  box-shadow: none !important;
  border: 0.5pt solid #d8d5cc !important;
  padding: 8pt !important;
  page-break-inside: avoid;
}
.fg-cell, .diff-side { border: 0.5pt solid #ebe7dc; }
.fg-label, .diff-tag { background: #ffffff !important; color: #161814 !important; border: 0.5pt solid #4b4e47; }
.diff-arrow { background: #ffffff !important; box-shadow: none !important; border: 0.5pt solid #4b4e47; }
figcaption, .diff-cap, .fg-cap { color: #4b4e47 !important; font-size: 9pt !important; }

/* Spec list — table for printing */
.spec-list {
  background: transparent !important;
  box-shadow: none !important;
  border: 0.5pt solid #d8d5cc !important;
  page-break-inside: avoid;
}
.spec-list dt, .spec-list dd { padding: 3pt 0 !important; }

/* Pin table */
.pin-table { background: transparent !important; box-shadow: none !important; border: 0.5pt solid #d8d5cc !important; }
.pin-table thead th { background: #ebe7dc !important; }
.pin-table tbody tr:hover td { background: transparent !important; }

/* Errata */
.errata { page-break-inside: avoid; box-shadow: none !important; border: 0.5pt solid #d8d5cc !important; }
.err-badge { background: #ffffff !important; color: #8a2424 !important; border: 0.5pt solid #8a2424 !important; }

/* No empty / 404 in print */
.empty-state, .sobel-hero { display: none !important; }

a, a:hover { color: #16573a !important; text-decoration: none !important; }
a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8.5pt; color: #6e7167; word-break: break-all; }