/* Strona projektu Pipe (GitHub Pages). Kroje jak w `pipe web`; strona jest tylko ciemna: grafit rury, akcent to sniedz (patyna na miedzi). Kolory wspolne z scripts/build_diagrams.py i scripts/demo/social_preview.py. */

@font-face { font-family: "Plex Sans"; font-weight: 400; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-ext-400-normal.woff2") format("woff2"); unicode-range: U+0100-024F, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF; }
@font-face { font-family: "Plex Sans"; font-weight: 400; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Sans"; font-weight: 500; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-ext-500-normal.woff2") format("woff2"); unicode-range: U+0100-024F, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF; }
@font-face { font-family: "Plex Sans"; font-weight: 500; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Sans"; font-weight: 600; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-ext-600-normal.woff2") format("woff2"); unicode-range: U+0100-024F, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF; }
@font-face { font-family: "Plex Sans"; font-weight: 600; font-display: swap; src: url("assets/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-display: swap; src: url("assets/fonts/ibm-plex-mono-latin-ext-400-normal.woff2") format("woff2"); unicode-range: U+0100-024F, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF; }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-display: swap; src: url("assets/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Plex Mono"; font-weight: 500; font-display: swap; src: url("assets/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); }

:root {
  --bg: #17181a;
  --panel: #1e1f22;
  --sunken: #26272b;
  --line: #34353a;
  --ink: #ececea;
  --ink-2: #c4c5c6;
  --ink-3: #9a9c9f;
  --accent: #7cc7b6;
  --on-accent: #10201c;
  --ok: #5cc68a;
  --warn: #e0a64a;
  --bad: #f08a86;
  --code-bg: #111214;
  --code-ink: #e6e6e3;
  --code-dim: #9a9c9f;
  --mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: "Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body { margin: 0; color: var(--ink); font: 400 16.5px/1.65 var(--sans); background: var(--bg); }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
code, pre { font-family: var(--mono); }
p code, li code, td code, dd code { font-size: .88em; background: var(--sunken); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
img { max-width: 100%; height: auto; display: block; }

.wrap { width: min(100% - 32px, 1080px); margin-inline: auto; }
.narrow { max-width: 720px; }

/* --- nawigacja --- */
.top { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 56px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); text-decoration: none; font-weight: 600; font-size: 17px; }
.brand img { display: block; flex: none; }
.top nav { display: flex; align-items: center; gap: 20px; margin-left: auto; font-size: 14.5px; }
.top nav a { color: var(--ink-2); text-decoration: none; white-space: nowrap; }
.top nav a:hover { color: var(--ink); }
.lang-pick { display: inline-flex; gap: 2px; padding: 2px; border: 1px solid var(--line); border-radius: 7px; }
.top nav .lang-pick > * { display: inline-flex; align-items: center; gap: 5px; padding: 2px 7px; border-radius: 5px;
  font-size: 12.5px; font-weight: 500; color: var(--ink-3); text-decoration: none; }
.top nav .lang-pick a:hover { color: var(--ink); }
.top nav .lang-pick [aria-current] { background: var(--line); color: var(--ink); }
.flag { width: 16px; height: 11px; border-radius: 2px; flex: none; box-shadow: 0 0 0 1px var(--line); }
.lang-pick a .flag { opacity: .75; }
@media (max-width: 760px) { .top nav .hide-sm { display: none; } .top .wrap { gap: 12px; } .top nav { gap: 14px; } }

/* --- naglowek strony --- */
.intro { padding: 64px 0 40px; }
.intro h1 { font-size: clamp(30px, 4.6vw, 46px); line-height: 1.15; letter-spacing: -.02em; font-weight: 600; margin: 0 0 20px; max-width: 22ch; }
.intro .lead { font-size: 19px; color: var(--ink-2); max-width: 62ch; margin: 0 0 28px; }
.intro .meta { font-size: 14.5px; color: var(--ink-3); margin-top: 14px; }
.intro .meta a { color: var(--ink-2); }

.cmd { position: relative; background: var(--code-bg); color: var(--code-ink); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; font: 14px/1.6 var(--mono);
  overflow-x: auto; max-width: 620px; margin: 0; padding-right: 84px; }
.cmd .c { color: var(--code-dim); }
.cmd button { position: absolute; top: 8px; right: 8px; font: 500 12px var(--sans); color: var(--code-ink); background: var(--code-bg);
  border: 1px solid #3a3b3f; border-radius: 5px; padding: 3px 8px; cursor: pointer; }
.cmd button:hover { border-color: #6a6c70; }

.shot { margin: 8px 0 0; }
.shot img { border: 1px solid var(--line); border-radius: 10px; }
.shot figcaption { font-size: 13.5px; color: var(--ink-3); margin-top: 10px; }

/* --- sekcje --- */
section { padding: 56px 0; border-top: 1px solid var(--line); }
section h2 { font-size: 27px; line-height: 1.25; letter-spacing: -.01em; font-weight: 600; margin: 0 0 14px; }
section h3 { font-size: 17.5px; font-weight: 600; margin: 28px 0 6px; }
section > .wrap > p, .narrow > p { max-width: 68ch; color: var(--ink-2); }

/* grafiki koncepcyjne (scripts/build_diagrams.py): na telefonie przewijane w ramce, tekst zostaje czytelny */
.diagram { margin: 22px 0 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.diagram img { width: 100%; min-width: 720px; max-width: none; }
.parts { margin: 22px 0 26px; }
.parts .valve th { color: var(--ok); } .parts .fuse th { color: var(--warn); } .parts .gauge th { color: var(--accent); }

/* zapis rozmowy */
.chat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 8px 0; margin-top: 26px; font-size: 15px; }
.turn { display: grid; grid-template-columns: 64px 1fr; gap: 12px; padding: 12px 20px; }
.turn + .turn { border-top: 1px solid var(--line); }
.who { font: 500 12.5px/1.9 var(--mono); color: var(--ink-3); }
.turn.me .msg { font-weight: 500; }
.steps { list-style: none; margin: 0; padding: 0; font: 13.5px/1.9 var(--mono); color: var(--ink-2); }
.steps li::before { content: "✓"; color: var(--ok); margin-right: 10px; }
.ask { border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line)); border-radius: 6px; padding: 12px 14px; background: var(--bg); }
.ask .t { font-weight: 600; margin-bottom: 6px; }
.ask.auto { border-color: color-mix(in srgb, var(--ok) 45%, var(--line)); margin-bottom: 10px; }
.ask pre { margin: 0 0 10px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 13.5px; }
.ask ul { margin: 0; padding-left: 18px; font-size: 14px; color: var(--ink-2); }
.chat p { margin: 0 0 8px; }
.chat p:last-child { margin: 0; }
@media (max-width: 560px) { .turn { grid-template-columns: 1fr; gap: 2px; padding: 12px 14px; } }

/* co sam, o co pyta, czego nigdy */
.rules { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; margin-top: 30px; }
.rules h3 { margin: 0 0 4px; }
.rules .why { font-size: 14px; color: var(--ink-3); margin: 0 0 12px; }
.rules ul { margin: 0; padding-left: 18px; font-size: 15px; }
.rules li { margin: 3px 0; }
.rules .ok h3 { color: var(--ok); } .rules .ask2 h3 { color: var(--warn); } .rules .no h3 { color: var(--bad); }
@media (max-width: 820px) { .rules { grid-template-columns: 1fr; gap: 24px; } }

/* gdzie rozmawiasz, funkcje */
.table { width: 100%; border-collapse: collapse; margin-top: 22px; font-size: 15.5px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); }
.table th { font-weight: 600; white-space: nowrap; width: 1%; padding-right: 28px; }
.table td code { white-space: nowrap; }
@media (max-width: 620px) { .table th { white-space: normal; width: 34%; padding-right: 12px; } }

.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 48px; margin-top: 6px; }
.features dt { font-weight: 600; margin-top: 22px; }
.features dd { margin: 4px 0 0; color: var(--ink-2); }
@media (max-width: 760px) { .features { grid-template-columns: 1fr; } }

.steps-install h3 { margin-top: 30px; }
.steps-install .cmd { margin-top: 10px; }
.steps-install p { color: var(--ink-2); max-width: 68ch; }

.limits li { margin: 8px 0; color: var(--ink-2); max-width: 70ch; }
.limits li strong { color: var(--ink); font-weight: 600; }

footer { border-top: 1px solid var(--line); padding: 28px 0 48px; font-size: 14px; color: var(--ink-3); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; }
footer a { color: var(--ink-2); }

/* --- dokumentacja (docs/, en/docs/ -- strony sklada scripts/build_site.py) --- */
.top nav a[aria-current="page"] { color: var(--ink); }
.doc-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; padding: 40px 0 64px; align-items: start; }
.side { position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow-y: auto; font-size: 14.5px; padding-bottom: 12px; }
.side-h { font-size: 14.5px; font-weight: 600; line-height: 1.4; color: var(--ink); margin: 20px 0 6px; }
.side-h:first-child { margin-top: 0; }
.side-h a { color: inherit; text-decoration: none; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side li a { display: block; padding: 4px 12px; color: var(--ink-2); text-decoration: none; line-height: 1.4; }
.side li a:hover { color: var(--ink); }
/* menu jako odcinki rury, biezaca strona to odcinek w kolorze akcentu */
.side .doc-nav { border-left: 3px solid var(--line); margin-left: 4px; }
.doc-nav li a { margin-left: -3px; border-left: 3px solid transparent; }
.side .doc-nav li a[aria-current="page"] { color: var(--ink); font-weight: 500; border-left-color: var(--accent); }
.toc { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); }
.toc li a { font-size: 13.5px; padding: 3px 10px; }
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-top: 24px; }
  .side { position: static; max-height: none; overflow: visible; border-bottom: 1px solid var(--line); padding-bottom: 18px; }
  .side .doc-nav { display: flex; flex-wrap: wrap; gap: 4px 6px; border-left: 0; margin-left: 0; }
  .doc-nav li a { border: 1px solid var(--line); border-radius: 5px; padding: 4px 10px; }
  .doc-nav li a { margin-left: 0; }
  .side .doc-nav li a[aria-current="page"] { border-color: var(--accent); }
  .toc { display: none; }
}

.doc { max-width: 780px; font-size: 16px; }
.doc h1 { font-size: clamp(28px, 4vw, 38px); line-height: 1.2; letter-spacing: -.02em; font-weight: 600; margin: 0 0 6px; }
.doc h2 { font-size: 24px; line-height: 1.3; letter-spacing: -.01em; font-weight: 600; margin: 48px 0 10px; padding-top: 22px; border-top: 1px solid var(--line); }
.doc .ver + h2 { margin-top: 28px; padding-top: 0; border-top: 0; }
.doc h3 { font-size: 18px; font-weight: 600; margin: 30px 0 6px; }
.doc h4, .doc h5, .doc h6 { font-size: 16px; font-weight: 600; margin: 24px 0 4px; }
.doc .anchor { margin-left: 8px; color: var(--ink-3); text-decoration: none; opacity: 0; font-weight: 400; }
.doc :is(h2, h3, h4):hover .anchor, .doc .anchor:focus { opacity: 1; }
.doc .ver { font: 13px var(--mono); color: var(--ink-3); margin: 0 0 24px; }
.doc .lead { font-size: 18px; color: var(--ink-2); max-width: 62ch; }
.doc p, .doc li { overflow-wrap: break-word; }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 4px 0; }
.doc hr { display: none; }
.doc blockquote { margin: 16px 0; padding: 6px 16px; border-left: 3px solid var(--line); color: var(--ink-2); }
.doc blockquote.warn { border-left-color: var(--warn); }
.doc blockquote p { margin: 4px 0; }
.doc pre { background: var(--code-bg); color: var(--code-ink); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; font: 13.5px/1.6 var(--mono); overflow-x: auto; margin: 14px 0; }
.doc pre.cmd { max-width: none; padding-right: 84px; }
.doc :is(p, li, td, th, blockquote) code { font-size: .86em; background: var(--sunken); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
.doc h2 code, .doc h3 code { font-size: .85em; background: var(--sunken); padding: 1px 6px; border-radius: 4px; }
.table-wrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.doc table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.5; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
.doc th { font-weight: 600; background: var(--sunken); }
.doc tr:last-child td { border-bottom: 0; }
.doc .edit { margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; }
.doc .edit a { color: var(--ink-3); }
.doc .button { display: inline-block; padding: 8px 14px; border-radius: 6px; background: var(--accent); color: var(--on-accent); text-decoration: none; font-weight: 500; }
.doc .button:hover { filter: brightness(1.08); }
.doc-list { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 12px 24px; margin: 32px 0; }
.doc-list dt { font-weight: 600; }
.doc-list dd { margin: 0; color: var(--ink-2); }
.doc .note { font-size: 14.5px; color: var(--ink-3); }
@media (max-width: 620px) { .doc-list { grid-template-columns: 1fr; gap: 2px; } .doc-list dd { margin-bottom: 12px; } }