/* thunc site: shared styles for the landing page and the docs.
   Palette and type follow the durable-agents plan artifact: warm paper, rust accent, IBM Plex. */

:root {
  --bg: #f7f5f2; --surface: #ffffff; --sunk: #efebe6; --fg: #22201d; --muted: #6c655d; --line: #ddd6cd;
  --accent: #9b481b; --accent-soft: #9b481b14; --on-accent: #fffaf4;
  --pass: #2f7a46; --pass-soft: #2f7a4618; --warn: #9a6a00; --warn-soft: #9a6a0018;
  --kw: #8a3fa0; --str: #2f7a46; --fn: #2c5f8a; --ty: #9b481b; --com: #8a8279;
  --display: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171513; --surface: #201d1a; --sunk: #141210; --fg: #ece6df; --muted: #a69d92; --line: #3a352f;
    --accent: #edb16e; --accent-soft: #edb16e1a; --on-accent: #1d1206;
    --pass: #7fc796; --pass-soft: #7fc79620; --warn: #e5bd5c; --warn-soft: #e5bd5c1c;
    --kw: #d3a6f0; --str: #9fd3a8; --fn: #8fbfe6; --ty: #edb16e; --com: #8a8178;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #171513; --surface: #201d1a; --sunk: #141210; --fg: #ece6df; --muted: #a69d92; --line: #3a352f;
  --accent: #edb16e; --accent-soft: #edb16e1a; --on-accent: #1d1206;
  --pass: #7fc796; --pass-soft: #7fc79620; --warn: #e5bd5c; --warn-soft: #e5bd5c1c;
  --kw: #d3a6f0; --str: #9fd3a8; --fn: #8fbfe6; --ty: #edb16e; --com: #8a8178;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 var(--body); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
h1 { font: 600 clamp(34px, 5vw, 54px)/1.08 var(--display); letter-spacing: -.015em; }
h2 { font: 600 clamp(24px, 3vw, 30px)/1.2 var(--display); letter-spacing: -.005em; }
h3 { font: 600 17px/1.4 var(--body); }
p { margin: 0 0 14px; }
a { color: var(--accent); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; display: block; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
button { font: inherit; color: inherit; cursor: pointer; }
ul, ol { padding-left: 22px; margin: 8px 0 16px; }
li { margin: 6px 0; }
li::marker { color: var(--accent); }
.muted { color: var(--muted); }
.eyebrow { font: 500 11.5px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.eyebrow.accent { color: var(--accent); }

/* inline code and code blocks */
code { font-family: var(--mono); font-size: .86em; overflow-wrap: anywhere; }
:not(pre) > code { background: var(--sunk); border-radius: 4px; padding: 1px 5px; }
.codeblock { position: relative; margin: 14px 0 20px; }
.codeblock .label { font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
pre { margin: 0; background: var(--sunk); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; overflow-x: auto; font: 13.5px/1.65 var(--mono); tab-size: 4; }
pre code { font: inherit; background: none; padding: 0; overflow-wrap: normal; }
.copy {
  position: absolute; top: 8px; right: 8px; font: 500 11.5px var(--mono); color: var(--muted);
  background: var(--surface); border: 1px solid var(--line); border-radius: 5px; padding: 4px 9px; opacity: 0; transition: opacity .15s;
}
.codeblock:hover .copy, .copy:focus-visible { opacity: 1; }
@media (hover: none) { .copy { opacity: 1; } }
.copy:hover { color: var(--fg); border-color: var(--accent); }
.tk-kw { color: var(--kw); } .tk-str { color: var(--str); } .tk-fn { color: var(--fn); }
.tk-ty { color: var(--ty); } .tk-com { color: var(--com); font-style: italic; } .tk-res { color: var(--accent); font-weight: 600; }

/* buttons, install box, pills */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px;
  border-radius: 7px; border: 1px solid var(--line); background: var(--surface); color: var(--fg);
  text-decoration: none; font: 500 15px var(--body); transition: border-color .15s, filter .15s;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.08); }
.install {
  display: inline-flex; align-items: center; gap: 12px; max-width: 100%; background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 6px 6px 16px; font: 500 16px var(--mono);
}
.install::before { content: "$"; color: var(--muted); }
.install button { font: 500 12px var(--mono); color: var(--muted); background: var(--sunk); border: 1px solid var(--line); border-radius: 5px; padding: 6px 10px; }
.install button:hover { color: var(--fg); border-color: var(--accent); }
.pill { display: inline-flex; align-items: center; gap: 6px; font: 500 12px/1 var(--mono); padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }

/* shared blocks */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; }
.card p:last-child { margin: 0; }
.card h3 { margin-bottom: 6px; }
.callout { border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 18px 0; }
.callout.warn { border-left-color: var(--warn); background: var(--warn-soft); }
.callout p:last-child { margin: 0; }
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); margin: 14px 0 20px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 10px 14px; border-top: 1px solid var(--line); }
th { font: 500 11.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); border-top: 0; background: var(--sunk); }
td code { white-space: nowrap; }
td.wrap code { white-space: normal; }
td.nowrap { white-space: nowrap; }

/* changelog */
.release h2 { display: flex; align-items: center; gap: 10px; }
.release h2 .pill { font-size: 11px; padding: 4px 8px; }
.release-meta { font: 13px var(--mono); color: var(--muted); margin-top: -4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { font: 500 14px var(--mono); padding: 7px 12px; border-radius: 6px; background: var(--surface); border: 1px solid var(--line); }
.gif { border-radius: 10px; border: 1px solid var(--line); box-shadow: 0 18px 50px #00000022; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.topbar .inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 60px; display: flex; align-items: center; gap: 24px; }
.brand { font: 600 21px/1 var(--mono); letter-spacing: -.03em; color: var(--fg); text-decoration: none; }
.brand span { color: var(--accent); }
.topbar nav { display: flex; gap: 4px; margin-left: auto; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 14.5px; padding: 7px 11px; border-radius: 6px; }
.topbar nav a:hover, .topbar nav a.active { color: var(--fg); background: var(--sunk); }
.topbar nav a.gh { color: var(--fg); border: 1px solid var(--line); }

/* landing */
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.hero { padding-block: 72px 56px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; }
.hero .lede { font-size: 18.5px; color: var(--muted); max-width: 34em; margin: 20px 0 28px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.hero .facts { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 26px; font: 13px var(--mono); color: var(--muted); }
.hero .facts b { color: var(--fg); font-weight: 500; }
.window { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 24px 60px #00000018; overflow: hidden; min-width: 0; }
.window .bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--sunk); }
.window .bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.window .bar span { margin-left: 8px; font: 12px var(--mono); color: var(--muted); }
.window pre { border: 0; border-radius: 0; background: transparent; padding: 20px 22px; font-size: 14.5px; }
.window.term pre { font-size: 11.5px; line-height: 1.45; padding: 16px 18px; } /* a 92-column terminal fits the docs column */
.band { padding: 64px 0; border-top: 1px solid var(--line); }
.band .head { max-width: 680px; margin-bottom: 28px; }
.band .head p { color: var(--muted); font-size: 17px; margin-top: 10px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: center; }
.cardnum { font: 600 15px var(--mono); color: var(--accent); margin-bottom: 8px; display: block; }
.checks { list-style: none; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 36px; }
.checks li { position: relative; padding-left: 26px; color: var(--muted); margin: 0; }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--pass); font-weight: 600; }
.checks b { color: var(--fg); font-weight: 600; }
.backends { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.backends div { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.backends b { display: block; font-weight: 600; }
.backends code { font-size: 12.5px; }
.backends p { margin: 4px 0 0; font-size: 14px; color: var(--muted); }
.cta { text-align: center; padding: 72px 0 80px; border-top: 1px solid var(--line); }
.cta h2 { margin-bottom: 22px; }
.cta .ctas { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.sitefoot { border-top: 1px solid var(--line); padding: 24px 0 40px; font: 12.5px/1.8 var(--mono); color: var(--muted); }
.sitefoot .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px 24px; }
.sitefoot a { color: var(--muted); }
.sitefoot a:hover { color: var(--accent); }

/* docs */
.docs { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 56px; padding: 36px 24px 80px; }
.docs aside { position: sticky; top: 92px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; }
.docs aside nav { display: grid; gap: 2px; margin-bottom: 22px; }
.docs aside nav .eyebrow { margin: 18px 0 6px 10px; }
.docs aside nav .eyebrow:first-child { margin-top: 0; }
.docs aside nav a { color: var(--muted); text-decoration: none; padding: 7px 10px; border-radius: 6px; font-size: 14.5px; }
.docs aside nav a:hover { color: var(--fg); background: var(--sunk); }
.docs aside nav a.active { color: var(--fg); background: var(--accent-soft); box-shadow: inset 2px 0 0 var(--accent); }
.docs aside .version { font: 12px var(--mono); color: var(--muted); border-top: 1px solid var(--line); padding: 14px 10px 0; }
.docs main { min-width: 0; max-width: 780px; }
.docs .ctas { display: flex; flex-wrap: wrap; gap: 10px; margin: 4px 0 20px; }
.docs header { padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.docs header .eyebrow { margin-bottom: 12px; color: var(--accent); }
.docs header h1 { font-size: clamp(32px, 4.4vw, 44px); }
.docs header .lede { font-size: 18px; color: var(--muted); margin: 14px 0 0; max-width: 40em; }
.docs h2 { margin: 44px 0 14px; padding-top: 4px; }
.docs h3 { margin: 26px 0 8px; }
.docs h2 a.anchor, .docs h3 a.anchor { color: var(--line); text-decoration: none; margin-left: 8px; font-weight: 400; opacity: 0; }
.docs h2:hover a.anchor, .docs h3:hover a.anchor { opacity: 1; }
.docs dl { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 20px; margin: 14px 0 20px; }
.docs dt { font: 500 13.5px/1.65 var(--mono); color: var(--accent); }
.docs dd { margin: 0; }
.steps { list-style: none; padding: 0; counter-reset: step; margin: 18px 0; }
.steps > li { counter-increment: step; position: relative; padding: 0 0 8px 48px; margin: 0 0 18px; }
.steps > li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0; font: 600 20px/1.3 var(--display); color: var(--accent); }
.steps > li h3 { margin: 0 0 6px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); }
.pager a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; text-decoration: none; color: var(--fg); }
.pager a:hover { border-color: var(--accent); }
.pager a span { display: block; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin-bottom: 2px; }
.pager a.next { text-align: right; grid-column: 2; }
.edit { margin-top: 18px; font: 12.5px var(--mono); color: var(--muted); }
.edit a { color: var(--muted); }

@media (max-width: 960px) {
  .hero, .grid2 { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .grid3, .backends { grid-template-columns: minmax(0, 1fr); }
  .checks { grid-template-columns: minmax(0, 1fr); }
  .docs { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 0; }
  .docs aside { position: static; max-height: none; overflow: visible; margin: 0 -24px 26px; padding: 12px 24px; border-bottom: 1px solid var(--line); }
  .docs aside .eyebrow, .docs aside .version { display: none; }
  .docs aside nav { display: flex; overflow-x: auto; margin: 0; gap: 4px; scrollbar-width: none; }
  .docs aside nav a { white-space: nowrap; }
  .docs aside nav a.active { box-shadow: inset 0 -2px 0 var(--accent); }
}
@media (max-width: 640px) {
  .wrap, .topbar .inner { padding: 0 16px; }
  .docs { padding: 0 16px 64px; }
  .docs aside { margin: 0 -16px 24px; padding: 10px 16px; }
  .topbar .inner { gap: 12px; }
  .topbar nav a { padding: 7px 8px; font-size: 14px; }
  .topbar nav a.hide-sm { display: none; }
  .hero { padding-block: 40px; }
  .hero .lede { font-size: 17px; }
  .install { font-size: 14.5px; }
  .window pre { font-size: 12.5px; padding: 16px; }
  pre { font-size: 12.5px; padding: 14px; }
  .band { padding: 48px 0; }
  .docs dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .docs dd { margin-bottom: 10px; }
  .steps > li { padding-left: 38px; }
  .pager { grid-template-columns: minmax(0, 1fr); }
  .pager a.next { grid-column: 1; }
}

/* linked cards (docs "Where next") */
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 14px; }
a.card { display: block; text-decoration: none; color: inherit; transition: border-color .15s; }
a.card:hover { border-color: var(--accent); }
a.card h3 { color: var(--fg); }
@media (max-width: 640px) { .cards { grid-template-columns: minmax(0, 1fr); } }

/* blog */
.post { max-width: 760px; margin: 0 auto; padding: 56px 24px 80px; }
.post > header { padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.post > header .eyebrow { margin-bottom: 12px; }
.post > header .lede { font-size: 18.5px; color: var(--muted); margin: 16px 0 0; }
.post .byline { font: 13px var(--mono); color: var(--muted); margin: 18px 0 0; }
.post h2 { margin: 52px 0 14px; padding-top: 4px; }
.post .day + h2 { margin-top: 8px; }
.post .day { margin-top: 56px; }
.post h2 a.anchor { color: var(--line); text-decoration: none; margin-left: 8px; font-weight: 400; opacity: 0; }
.post h2:hover a.anchor { opacity: 1; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 28px 0 0; }
.stats div { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.stats b { display: block; font: 600 26px/1.15 var(--display); color: var(--accent); }
.stats span { display: block; margin-top: 4px; font: 12.5px/1.4 var(--mono); color: var(--muted); }
.timeline { list-style: none; padding: 0; margin: 18px 0 18px 6px; border-left: 2px solid var(--line); }
.timeline li { position: relative; margin: 0; padding: 0 0 12px 22px; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 7px; width: 12px; height: 12px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.timeline time { display: inline-block; min-width: 4.6em; font: 500 12.5px var(--mono); color: var(--muted); }
.timeline b { font: 600 14px var(--mono); margin-right: 8px; }
.cta-inline { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); }
@media (max-width: 640px) {
  .post { padding: 36px 16px 64px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline time { display: block; }
}