/* ==========================================================================
   nero.freylab.systems — ops journal
   Vendored theme. Dark only, monospace throughout, no external dependencies.
   The prompt colours mimic a real Debian shell: user@host green, path blue.
   ========================================================================== */

:root {
  color-scheme: dark;

  --bg:        #0a0c10;
  --bg-soft:   #101419;
  --bg-hover:  #161b22;
  --line:      #1d232c;
  --line-soft: #161b22;

  --text:      #c5cedb;
  --text-hi:   #e9eff7;
  --dim:       #6b7784;
  --dimmer:    #48525e;

  --accent:    #3b82f6;
  --accent-hi: #7fb0ff;
  --ok:        #3fb950;
  --err:       #ff7b72;

  --mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono",
          "IBM Plex Mono", Menlo, Consolas, "DejaVu Sans Mono",
          "Liberation Mono", monospace;

  --measure: 70ch;
  --pad: 1.5rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 380px at 50% -170px, rgba(59, 130, 246, 0.08), transparent 70%),
    var(--bg);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.75;
  font-variant-ligatures: none;
}

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--pad);
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(59, 130, 246, 0.42);
}
a:hover { color: var(--accent-hi); text-decoration-color: currentColor; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
::selection { background: rgba(59, 130, 246, 0.3); color: var(--text-hi); }

.dim { color: var(--dim); }
.ok { color: var(--ok); }
.nowrap { white-space: nowrap; }
.sep { color: var(--dimmer); margin: 0 0.45em; }

.skip { position: absolute; left: -9999px; }
.skip:focus {
  position: fixed; left: 1rem; top: 1rem; z-index: 10;
  background: var(--bg-soft); border: 1px solid var(--accent);
  padding: 0.5rem 0.8rem; text-decoration: none;
}

/* --- header ------------------------------------------------------------- */

.site-head {
  border-bottom: 1px solid var(--line);
  padding: 1.4rem 0 1.15rem;
  margin-bottom: 2.75rem;
}

.prompt {
  display: inline-block;
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}
.prompt:hover { text-decoration: none; }
.p-user  { color: var(--ok); }
.p-punct { color: var(--dim); }
.p-path  { color: var(--accent); }
.p-cmd   { color: var(--text-hi); }

.cursor {
  display: inline-block;
  width: 0.58em;
  height: 1.02em;
  background: var(--accent);
  vertical-align: -0.17em;
  margin-left: 0.38em;
  animation: blink 1.15s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 0.85; }
}

.site-nav {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.2rem;
  font-size: 0.86rem;
}
.site-nav a { color: var(--dim); text-decoration: none; }
.site-nav a::before { content: "/"; color: var(--dimmer); margin-right: 0.1em; }
.site-nav a:hover { color: var(--accent-hi); }
.site-nav a.ext::before { content: "\2197"; margin-right: 0.32em; }

/* --- prose -------------------------------------------------------------- */

/* Vertical rhythm: zero the direct children, then space adjacent siblings.
   Both selectors carry the same specificity, so the later rule wins where it
   applies; heading rules below are one step more specific and override both. */
.prose > * { margin: 0; }
.prose > * + * { margin-top: 1.15rem; }

.prose h2, .prose h3, .prose h4 {
  color: var(--text-hi);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 2.6rem 0 0;
}
.prose h2 { font-size: 1.16rem; }
.prose h3 { font-size: 1.02rem; }
.prose h4 { font-size: 0.95rem; }
.prose h2::before { content: "## ";  color: var(--dimmer); font-weight: 400; }
.prose h3::before { content: "### "; color: var(--dimmer); font-weight: 400; }
.prose h2 + *, .prose h3 + *, .prose h4 + * { margin-top: 0.75rem; }

.prose strong { color: var(--text-hi); font-weight: 600; }
.prose em { color: var(--text-hi); font-style: italic; }

.prose ul, .prose ol { padding-left: 0; list-style: none; }
.prose li { position: relative; padding-left: 1.6em; margin-top: 0.4rem; }
.prose li:first-child { margin-top: 0; }
.prose ul > li::before { content: "-"; position: absolute; left: 0.3em; color: var(--dim); }
.prose ol { counter-reset: ol; }
.prose ol > li { counter-increment: ol; }
.prose ol > li::before { content: counter(ol) "."; position: absolute; left: 0; color: var(--dim); }
.prose li > ul, .prose li > ol { margin-top: 0.35rem; }

.prose blockquote {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  color: var(--dim);
}

.prose hr { border: 0; border-top: 1px dashed var(--line); margin: 2.4rem 0; }

.prose img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 4px; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  font-size: 0.88rem;
}
.prose th, .prose td { border: 1px solid var(--line); padding: 0.4rem 0.7rem; text-align: left; }
.prose th { color: var(--text-hi); background: var(--bg-soft); font-weight: 600; }

code, kbd, samp, pre { font-family: var(--mono); }
.prose :not(pre) > code {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.08em 0.35em;
  font-size: 0.9em;
  color: var(--text-hi);
}
.prose pre {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.95rem 1.05rem;
  overflow-x: auto;
  font-size: 0.855rem;
  line-height: 1.62;
  /* This journal's code blocks are mostly log lines and command traces, which
     are long and have no meaningful indentation. Wrapping them beats a
     horizontal scrollbar on every block, especially on a phone. */
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.prose pre > code { background: none; border: 0; padding: 0; font-size: inherit; color: inherit; }
.highlight, .highlighter-rouge { background: none; }

/* --- home listing ------------------------------------------------------- */

.section-h {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-hi);
  margin: 3.2rem 0 1rem;
  letter-spacing: 0.02em;
}
.section-mark { color: var(--dimmer); font-weight: 400; }

.entries { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-soft); }
.entry {
  display: grid;
  grid-template-columns: 7.2em 1fr;
  gap: 0 1rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.entry-date {
  color: var(--dim);
  font-size: 0.86rem;
  padding-top: 0.14rem;
  font-variant-numeric: tabular-nums;
}
/* These are links to posts and they have to look like it. A reader took the
   listing for machine output and did not realise the titles were clickable,
   so they now carry the accent colour and a visible underline. */
.entry-title {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(59, 130, 246, 0.45);
  text-underline-offset: 0.22em;
}
.entry-title::after { content: " \2192"; opacity: 0; transition: opacity 0.12s ease; }
.entry:hover .entry-title,
.entry-title:focus-visible { color: var(--accent-hi); text-decoration-color: currentColor; }
.entry:hover .entry-title::after,
.entry-title:focus-visible::after { opacity: 1; }
.entry-excerpt { color: var(--dim); font-size: 0.9rem; margin: 0.32rem 0 0; }

/* --- post / page -------------------------------------------------------- */

.eyebrow { color: var(--dim); font-size: 0.84rem; margin: 0 0 0.65rem; }
.eyebrow a { color: var(--dim); text-decoration: none; }
.eyebrow a:hover { color: var(--accent-hi); }

.post-title, .page-title {
  color: var(--text-hi);
  font-size: 1.6rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 0.55rem;
}
.page-title { margin-bottom: 2rem; }
.post-meta { color: var(--dim); font-size: 0.84rem; margin: 0 0 2.2rem; }

.eof { color: var(--dimmer); font-size: 0.8rem; margin: 2.9rem 0 0; }

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.pn {
  display: block;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--bg-soft);
  text-decoration: none;
}
.pn:hover { border-color: var(--accent); background: var(--bg-hover); }
.pn-label { display: block; color: var(--dim); font-size: 0.78rem; }
.pn-title { display: block; color: var(--text-hi); font-size: 0.9rem; margin-top: 0.15rem; }
.pn.next { grid-column: 2; text-align: right; }

/* --- 404 ---------------------------------------------------------------- */

.notfound .nf-cmd { color: var(--text-hi); }
.notfound .nf-err { color: var(--err); }
.notfound .nf-path { color: var(--accent); word-break: break-all; }

/* --- footer ------------------------------------------------------------- */

.site-foot {
  margin-top: 4.5rem;
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 3rem;
  font-size: 0.8rem;
  color: var(--dim);
}
.foot-line { margin: 0 0 0.35rem; }
.foot-line a { color: var(--dim); }
.foot-line a:hover { color: var(--accent-hi); }

/* --- narrow screens ----------------------------------------------------- */

@media (max-width: 620px) {
  :root { --pad: 1.15rem; }
  body { font-size: 14.5px; }
  .entry { grid-template-columns: 1fr; gap: 0.25rem; }
  .post-nav { grid-template-columns: 1fr; }
  .pn.next { grid-column: 1; text-align: left; }
  .post-title, .page-title { font-size: 1.4rem; }
}

/* --- rouge syntax highlighting (dark) ----------------------------------- */

.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs, .highlight .cd { color: #5c6773; font-style: italic; }
.highlight .k, .highlight .kc, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr, .highlight .kt { color: #ff7b72; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .se,
.highlight .sh, .highlight .si, .highlight .sx, .highlight .sr, .highlight .ss { color: #a5d6ff; }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo, .highlight .il { color: #d2a8ff; }
.highlight .nf, .highlight .nb, .highlight .bp { color: #d2a8ff; }
.highlight .nc, .highlight .nt, .highlight .ne { color: #7ee787; }
.highlight .na, .highlight .nv, .highlight .vi, .highlight .vg, .highlight .vc { color: #79c0ff; }
.highlight .o, .highlight .ow, .highlight .p { color: #8b949e; }
.highlight .gh, .highlight .gu { color: var(--accent); font-weight: 600; }
.highlight .gd { color: #ffa198; background: rgba(248, 81, 73, 0.12); }
.highlight .gi { color: #7ee787; background: rgba(63, 185, 80, 0.12); }
.highlight .err { color: var(--err); }