/* Layout: shop-manual pages. One readable column, a sticky nav strip, big tap targets on the checklist.
   Tokens and fonts match the binder (rebuild/tools/rebuild-template.html). */
:root {
  --bg: #f6f7f5; --paper: #fff; --fg: #17191b; --muted: #5d646b; --rule: #cfd4d8;
  --accent: #b4410f; --chip: #eef1f3; --done: #2f7d4f; --done-bg: #e3f1e8; --warn: #9a6a00;
  --display: "Barlow Condensed", "Arial Narrow", Arial, sans-serif;
  --body: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121417; --paper: #1a1d21; --fg: #e8eaec; --muted: #9aa2aa; --rule: #353b41;
    --accent: #fb8a4c; --chip: #242a30; --done: #5cc185; --done-bg: #1b2e23; --warn: #e0b448;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 var(--body); }

/* site chrome */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--paper); border-bottom: 1px solid var(--rule); }
.topbar-in {
  max-width: 1040px; margin: 0 auto; display: flex; align-items: center; gap: 6px 18px; flex-wrap: wrap;
  padding: 8px max(16px, env(safe-area-inset-left, 0px)) 8px max(16px, env(safe-area-inset-right, 0px));
}
.brand { font: 700 20px/1 var(--display); letter-spacing: .02em; color: var(--fg); text-decoration: none; white-space: nowrap; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 2px 14px; overflow-x: auto; scrollbar-width: none; min-width: 0; flex: 1; }
.nav::-webkit-scrollbar { display: none; }
.nav a { font: 600 14px/2 var(--body); color: var(--muted); text-decoration: none; white-space: nowrap; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--fg); }
.nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
.page {
  max-width: 1040px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 24px 64px;
}
.page.narrow { max-width: 760px; }
.page-head { border-bottom: 3px solid var(--fg); padding-bottom: 10px; margin-bottom: 16px; }
.eyebrow { font: 600 12px var(--body); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0 0 4px; }
h1 { font: 700 36px/1 var(--display); margin: 0; text-wrap: balance; }
.lede { color: var(--muted); margin: 8px 0 0; max-width: 68ch; }
h2 { font: 700 21px/1.15 var(--display); text-transform: uppercase; letter-spacing: .05em; margin: 28px 0 6px; text-wrap: balance; }
h3 { font: 700 15px/1.2 var(--display); text-transform: uppercase; letter-spacing: .05em; margin: 14px 0 4px; color: var(--muted); }
p { margin: 0 0 8px; max-width: 75ch; }
ul, ol { margin: 4px 0 10px; padding-left: 22px; }
li { margin: 2px 0; }
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
code { font: 13px var(--mono); background: var(--chip); padding: 0 4px; border-radius: 3px; }
pre { font: 13px/1.45 var(--mono); background: var(--chip); padding: 10px 12px; border-radius: 6px; overflow-x: auto; }
blockquote { margin: 8px 0; padding: 4px 12px; border-left: 3px solid var(--rule); color: var(--muted); }
.note { font-size: 14px; color: var(--muted); }
.tw { overflow-x: auto; margin: 6px 0 12px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 6px 7px; border-bottom: 1px solid var(--rule); }
th { font: 600 11.5px var(--body); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
td { font-variant-numeric: tabular-nums; }
.pill { display: inline-block; font: 700 11px var(--body); padding: 1px 7px; border-radius: 9px; border: 1px solid currentColor; white-space: nowrap; }
.pill.buy { color: var(--accent); } .pill.have { color: var(--done); } .pill.check { color: var(--warn); }
.pill.opt, .pill.reuse, .pill.na { color: var(--muted); }
.fsm { font: 600 12px var(--mono); color: var(--muted); white-space: nowrap; border: 1px solid var(--rule); background: var(--chip); border-radius: 4px; padding: 1px 6px; }
.inl-img { display: block; max-width: 260px; margin-top: 6px; border-radius: 4px; }
img { max-width: 100%; height: auto; }
.toc { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2px 24px; padding: 0; list-style: none; margin: 8px 0 18px; }
.toc a { color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--rule); display: block; padding: 4px 0; }
.toc a:hover { color: var(--accent); }
footer.site { max-width: 1040px; margin: 0 auto; padding: 16px max(16px, env(safe-area-inset-left, 0px)) 40px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--rule); }

/* step rows and parts boxes (build page) */
.step { display: grid; grid-template-columns: 18px minmax(0, 1fr) auto; gap: 10px; align-items: start; padding: 7px 0; border-bottom: 1px solid var(--rule); }
.step.mag { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.banner { border: 1px solid var(--accent); border-left-width: 5px; padding: 8px 12px; margin: 10px 0; font-size: 15px; }
details.parts { border: 1px solid var(--rule); border-left: 4px solid var(--accent); border-radius: 4px; padding: 2px 12px 8px; margin: 8px 0 12px; background: var(--paper); }
details.parts summary { font: 700 14px var(--body); cursor: pointer; padding: 6px 0; color: var(--accent); }
.box { display: inline-block; width: 14px; height: 14px; border: 1.5px solid var(--fg); border-radius: 2px; margin-top: 4px; }
.cb { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--accent); cursor: pointer; }
tr.done td:not(:first-child), .step.done .txt { opacity: .5; text-decoration: line-through; }
.cbnote { font-size: 13px; color: var(--muted); margin: 0 0 10px; }
@media (max-width: 600px) { .step { grid-template-columns: 18px minmax(0, 1fr); } .step .fsm { grid-column: 2; justify-self: start; } h1 { font-size: 30px; } }

/* checklist (home) */
.bar { position: sticky; top: 49px; z-index: 5; background: var(--bg); padding-block: 12px; display: grid; gap: 8px; border-bottom: 1px solid var(--rule); }
.bar-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.count { font: 700 26px/1 var(--display); font-variant-numeric: tabular-nums; }
.btns { display: flex; gap: 8px; }
.track { height: 10px; background: var(--rule); border-radius: 5px; overflow: hidden; }
.fill { height: 100%; width: 0; background: var(--done); transition: width .25s; }
.btn { font: 600 15px var(--body); color: var(--fg); background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: 9px 14px; min-height: 44px; cursor: pointer; }
.btn[aria-pressed="true"], body.editing #editToggle { border-color: var(--accent); color: var(--accent); }
#status { font-size: 13.5px; color: var(--muted); }
.statusrow { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline; }
.linkbtn { font: 600 13px var(--body); color: var(--accent); background: none; border: 0; padding: 0; cursor: pointer; text-decoration: underline; }
.passform { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.passform label { font: 600 14px var(--body); }
.passform input { font: 16px var(--body); padding: 9px 12px; min-height: 44px; border: 1px solid var(--rule); border-radius: 8px; background: var(--paper); color: var(--fg); flex: 1; min-width: 160px; }
#status[data-kind="warn"] { color: var(--warn); }
.cgroup { margin-top: 26px; }
.cgroup h2 { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin: 0 0 10px; color: var(--muted); }
.cgroup .sc { font-variant-numeric: tabular-nums; font-size: 17px; }
.cgroup .sc.full { color: var(--done); }
.clist { display: grid; gap: 8px; }
.crow { display: grid; grid-template-columns: minmax(0, 1fr) auto; background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; }
.item {
  display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 14px; align-items: start; text-align: left;
  background: none; color: var(--fg); border: 0; padding: 14px 16px; min-height: 64px; font: inherit; cursor: default;
}
body.editing .item { cursor: pointer; }
.item:disabled { color: var(--fg); opacity: 1; }
.item .bx { width: 34px; height: 34px; border-radius: 8px; border: 3px solid var(--muted); display: grid; place-items: center; }
.item .bx svg { width: 20px; height: 20px; opacity: 0; }
.item .t { font-weight: 600; font-size: 17px; min-width: 0; }
.item .s { display: block; font: 500 12.5px var(--mono); color: var(--muted); margin-top: 4px; }
.item .flag { color: var(--accent); font-family: var(--body); font-weight: 700; }
.more { display: flex; align-items: center; padding: 0 16px; font: 600 14px var(--body); text-decoration: none; border-left: 1px solid var(--rule); white-space: nowrap; }
.crow:has(.item[aria-checked="true"]) { background: var(--done-bg); border-color: var(--done); }
.item[aria-checked="true"] .bx { background: var(--done); border-color: var(--done); }
.item[aria-checked="true"] .bx svg { opacity: 1; }
.item[aria-checked="true"] .t { color: var(--muted); }
body.hidden-done .crow:has(.item[aria-checked="true"]), body.hidden-done .cgroup.complete { display: none; }
.viewonly { font-size: 13.5px; color: var(--muted); margin: 10px 0 0; }
body.editing .viewonly { display: none; }
@media (max-width: 520px) { .more { padding: 0 12px; } .item { grid-template-columns: 34px minmax(0, 1fr); gap: 12px; padding: 12px; } }
@media (prefers-reduced-motion: reduce) { .fill { transition: none; } html { scroll-behavior: auto; } }

/* about page */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 16px 0 22px; }
.fact { border-top: 3px solid var(--fg); padding-top: 6px; }
.fact b { display: block; font: 700 30px/1 var(--display); font-variant-numeric: tabular-nums; }
.fact span { font-size: 13.5px; color: var(--muted); }