/* Strony publiczne Laborbuch — styl 1:1 z koch-laboratory.com,
   z dopracowanym chooserem (hero). System fonts, light+dark, WCAG AA. */

:root {
  --bg: #fbfbfa; --fg: #1c1c1a; --muted: #55554f; --rule: #d9d9d2;
  --card: #f2f2ee; --accent: #5a3d8a; --accent-fg: #4a3175; --focus: #1a56c4;
  /* WCAG: --error ≥4.5:1 na bg/card; --input-border ≥3:1 (1.4.11) —
     --rule (1.4:1) jest tylko dekoracyjną linią, nie granicą kontrolki. */
  --error: #b3261e; --input-border: #767670;
  /* Tekst na tle --accent: ciemny motyw ma jasny akcent, więc #fff by odpadło. */
  --on-accent: #ffffff;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --measure: 42rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a; --fg: #e8e8e4; --muted: #a6a69e; --rule: #33333a;
    --card: #1f1f25; --accent: #b7a0e8; --accent-fg: #c9b6f2; --focus: #8db2ff;
    --error: #ff8f86; --input-border: #7c7c86;
    --on-accent: #221733;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--sans);
       font-size: 1.05rem; line-height: 1.65; text-rendering: optimizeLegibility; }

.skip { position: absolute; left: -999px; top: 0; background: var(--fg); color: var(--bg);
        padding: 0.6rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
a { color: var(--accent-fg); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 2px; }

header.site { border-bottom: 1px solid var(--rule); padding: 1rem 1.25rem 0; }
header.site .bar { max-width: var(--measure); margin: 0 auto; display: flex; flex-wrap: wrap;
                   align-items: baseline; justify-content: space-between; gap: 0.25rem 1rem; }
.brand { font-weight: 700; letter-spacing: -0.01em; color: var(--fg); text-decoration: none;
         display: inline-block; padding: 0.25rem 0; }
.bar-tools { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.9rem; }
nav.lang { font-family: var(--mono); font-size: 0.85rem; }
/* Cele dotykowe ≥24px (WCAG 2.5.8) — padding powiększa obszar klikalny. */
nav.lang a, nav.lang span { display: inline-block; padding: 0.3rem 0.45rem; }
nav.lang span[aria-current] { color: var(--muted); font-weight: 700; }
.btn-login { font-family: var(--mono); font-size: 0.8rem; white-space: nowrap;
             padding: 0.3rem 0.8rem; border: 1px solid var(--rule); border-radius: 999px;
             background: var(--card); color: var(--accent-fg); text-decoration: none;
             transition: border-color 120ms ease; }
.btn-login:hover { border-color: var(--accent); color: var(--fg); }
nav.main { max-width: var(--measure); margin: 0.5rem auto 0; display: flex;
           flex-wrap: wrap; gap: 0 1.25rem; padding-bottom: 0.5rem; }
nav.main a { color: var(--muted); text-decoration: none; display: inline-block; padding: 0.35rem 0; }
nav.main a:hover { color: var(--fg); text-decoration: underline; }
nav.main a[aria-current="page"] { color: var(--fg); font-weight: 700; }

main { padding: 2rem 1.25rem 3rem; }
.prose { max-width: var(--measure); margin: 0 auto; }
.prose h1 { font-size: 1.9rem; line-height: 1.2; letter-spacing: -0.02em; margin: 0.2rem 0 1rem; }
.prose h2 { font-size: 1.35rem; margin: 2.2rem 0 0.6rem; letter-spacing: -0.01em; }
.prose h3 { font-size: 1.1rem; margin: 1.8rem 0 0.4rem; }
.prose p, .prose li { max-width: var(--measure); }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin: 0.25rem 0; }
.prose code { font-family: var(--mono); font-size: 0.9em; background: var(--card);
              padding: 0.08em 0.35em; border-radius: 3px; }
.prose pre { background: var(--card); padding: 1rem; border-radius: 6px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose blockquote { margin: 1.2rem 0; padding: 0.6rem 1rem; border-left: 3px solid var(--accent);
                    background: var(--card); color: var(--muted); border-radius: 0 6px 6px 0; }
.prose blockquote p { margin: 0.3rem 0; }
.prose table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--rule); padding: 0.4rem 0.6rem; text-align: left; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }
.meta, .lede { color: var(--muted); }
.meta { font-family: var(--mono); font-size: 0.85rem; margin: 0 0 0.4rem; }
.lede { font-size: 1.1rem; }

.entries { margin-top: 2.5rem; display: grid; gap: 1.25rem; }
.card { border: 1px solid var(--rule); border-radius: 8px; padding: 1.1rem 1.25rem; background: var(--card); }
.card h2 { margin: 0.2rem 0 0.4rem; font-size: 1.2rem; }
.card h2 a { color: var(--fg); text-decoration: none; }
.card h2 a:hover { color: var(--accent-fg); text-decoration: underline; }
.card p { margin: 0.3rem 0; }
.more { font-family: var(--mono); font-size: 0.85rem; }

/* --- dowod czasu wpisu ---------------------------------------------------
   Blok domyka wpis: stempel bez pliku zrodlowego jest niesprawdzalny, wiec
   oba pobrania stoja obok siebie, a skrot jest widoczny bez pobierania. */
.proof { margin-top: 2.5rem; border: 1px solid var(--rule); border-left: 3px solid var(--accent);
         border-radius: 0 8px 8px 0; padding: 1rem 1.25rem; background: var(--card); }
.proof h2 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.proof p { max-width: var(--measure); margin: 0.4rem 0; }
.proof .mono, .mono { font-family: var(--mono); font-size: 0.85rem; word-break: break-all; }
.proof .tiny, .tiny { font-size: 0.8rem; color: var(--muted); }
.proof-files { list-style: none; margin: 0.8rem 0 0.6rem; padding: 0; display: grid; gap: 0.4rem; }
.proof-files li { display: flex; flex-wrap: wrap; gap: 0 0.6rem; align-items: baseline; }
.proof-files a { font-weight: 600; }

footer.site { border-top: 1px solid var(--rule); margin-top: 3rem; padding: 1.5rem 1.25rem 2.5rem; }
footer.site .note, footer.site nav, footer.site .attribution {
  max-width: var(--measure); margin: 0 auto; color: var(--muted); font-size: 0.9rem; }
footer.site nav { margin-top: 0.5rem; display: flex; flex-wrap: wrap; gap: 0 1.25rem; }
footer.site nav a { display: inline-block; padding: 0.3rem 0; }
footer.site .attribution { margin-top: 1rem; font-size: 0.85rem; }
footer.site .attribution a { color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor;
                             display: inline-block; padding: 0.2rem 0; }
footer.site .beat { font-family: var(--mono); }
/* Zegar BeatTime jako przycisk pauzy (WCAG 2.2.2) — wygląda jak tekst. */
button.beat-btn { font: inherit; font-family: var(--mono); background: none; border: 0;
                  padding: 0.2rem 0.15rem; margin: 0; color: inherit; cursor: pointer;
                  border-bottom: 1px dotted currentColor; }
button.beat-btn[aria-pressed="true"] { opacity: 0.65; border-bottom-style: solid; }

/* --- chooser (strona główna domeny) ---------------------------------- */
body.chooser { display: grid; place-items: center; min-height: 100vh;
  background:
    radial-gradient(60rem 30rem at 85% -10%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 60%),
    radial-gradient(50rem 26rem at -10% 110%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 60%),
    var(--bg); }
body.chooser main { padding: 2rem; width: min(40rem, 92vw); }
body.chooser .kicker { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-fg); margin: 0 0 0.6rem; }
body.chooser h1 { font-size: clamp(2rem, 6vw, 2.8rem); letter-spacing: -0.02em; margin: 0 0 0.4rem; }
body.chooser .subtitle { color: var(--muted); font-family: var(--mono); font-size: 0.9rem;
  margin: 0 0 2rem; }
.langlist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.langlist a { display: flex; align-items: baseline; gap: 1rem; padding: 1rem 1.1rem;
  border: 1px solid var(--rule); border-radius: 8px; background: var(--card);
  text-decoration: none; color: var(--fg);
  transition: border-color 120ms ease, transform 120ms ease; }
.langlist a:hover { border-color: var(--accent); transform: translateY(-1px); }
.langlist .code { font-family: var(--mono); font-weight: 700; color: var(--accent-fg); }
.langlist .tag { color: var(--muted); font-size: 0.95rem; }
.chooser-foot { margin-top: 2rem; color: var(--muted); font-size: 0.85rem; }
.chooser-foot a { color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor; }
.chooser-foot .beat { font-family: var(--mono); }
@media (max-width: 30rem) { .langlist a { flex-direction: column; gap: 0.25rem; } }

/* --- adres onion w stopce ---------------------------------------------- */
.onion-line { margin-top: 0.4rem; }
.onion-line code { font-family: var(--mono); font-size: 0.8rem; word-break: break-all; }
.onion-line a { color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor; }

/* --- ograniczony ruch (WCAG 2.3.3 / komfort) ---------------------------- */
@media (prefers-reduced-motion: reduce) {
  .langlist a, .btn-login { transition: none; }
  .langlist a:hover { transform: none; }
}