/* MCHistoryBuilder: site-wide look. Header and footer around one tool per page; tools style themselves in cirkel.css / dak.css. */
:root {
  --bg: #e8ece6;
  --surface: #f6f8f3;
  --ink: #1b221d;
  --muted: #5a6659;
  --line: #c9d1c4;
  --accent: #357a72;
  --accent-hi: #5aa59b;
  --accent-ink: #f3fbf9;
  --stone: #8d9590;
  --mark: #c27c12;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131915; --surface: #1b231e; --ink: #e4eae1; --muted: #98a594; --line: #2f3a32;
    --accent: #4a9f94; --accent-hi: #71c3b8; --accent-ink: #0d1a17; --stone: #6d7570; --mark: #e6a23c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #131915; --surface: #1b231e; --ink: #e4eae1; --muted: #98a594; --line: #2f3a32;
  --accent: #4a9f94; --accent-hi: #71c3b8; --accent-ink: #0d1a17; --stone: #6d7570; --mark: #e6a23c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--mark); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.gutter {
  max-width: 1220px;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .gutter { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-block: 12px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand svg { width: 28px; height: 28px; flex: none; }
.lang-menu { margin-left: auto; position: relative; }
.lang-menu summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  font: 700 13px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 6px 10px;
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover { border-color: var(--accent); }
.lang-menu svg { width: 21px; height: 14px; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.15); flex: none; }
.lang-caret { color: var(--muted); font-size: 11px; }
.lang-menu ul {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 20; list-style: none; margin: 0; padding: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 6px; min-width: 190px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18); display: grid; gap: 2px;
}
.lang-menu li a {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 4px;
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px;
}
.lang-menu li a:hover { background: var(--bg); }
.lang-menu li a[aria-current] { background: var(--bg); box-shadow: inset 3px 0 0 var(--accent); }
.lang-switch { margin-left: auto; display: flex; gap: 4px; }
.lang-switch a {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid transparent; border-radius: 4px;
  color: var(--muted); font: 700 12px var(--font); text-decoration: none; opacity: .7;
}
.lang-switch a:hover { opacity: 1; color: var(--ink); }
.lang-switch a[aria-current] { opacity: 1; color: var(--ink); border-color: var(--line); background: var(--bg); }
.lang-switch svg { width: 21px; height: 14px; border-radius: 2px; box-shadow: 0 0 0 1px rgba(0,0,0,.15); flex: none; }
.site-nav {
  order: 3; flex-basis: 100%; display: flex; gap: 20px; overflow-x: auto; white-space: nowrap;
  scrollbar-width: none; padding-bottom: 2px; margin-bottom: -1px;
  -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent);
  mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent);
}
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a:last-child { margin-right: 32px; }
.site-nav a { color: var(--muted); font-weight: 700; font-size: 15px; text-decoration: none; padding: 8px 0 10px; border-bottom: 2px solid transparent; flex: none; }
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
/* "Bouwwerken": every group and tool in one menu (build_nav.py) */
.atlas-menu { margin-left: auto; position: static; }
.site-header .gutter { position: relative; } /* the menu panel hangs from the header edge, so it never leaves the screen */
.atlas-menu + .lang-menu { margin-left: 0; }
.atlas-menu summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  font: 700 13px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 6px 10px;
}
.atlas-menu summary::-webkit-details-marker { display: none; }
.atlas-panel {
  --atlas-ink: var(--ink); --atlas-muted: var(--muted);
  position: absolute; right: max(16px, env(safe-area-inset-right, 0px)); top: calc(100% + 6px); z-index: 25; width: min(960px, calc(100% - 32px)); max-height: 76vh; overflow: auto;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px 20px; padding: 16px 18px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 6px; box-shadow: 0 10px 28px rgba(0, 0, 0, .22);
}
@media (max-width: 700px) { .atlas-panel { position: fixed; left: 12px; right: 12px; top: 64px; width: auto; } }
.atlas-col { border-top: 5px solid var(--h-main, var(--accent)); padding-top: 8px; min-width: 0; }
.atlas-col h2 { margin: 0 0 6px; display: flex; gap: 8px; align-items: center; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--atlas-ink); }
.atlas-sym { color: var(--h-main, var(--accent)); font-size: 15px; }
.atlas-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.atlas-col a { display: block; padding: 3px 0; color: var(--atlas-ink); text-decoration: none; font-size: 15px; }
.atlas-col a:hover { text-decoration: underline; text-decoration-color: var(--h-main, var(--accent)); text-decoration-thickness: 2px; }
.atlas-col a[aria-current] { font-weight: 700; box-shadow: inset 4px 0 0 var(--h-main, var(--accent)); padding-left: 10px; }
.theme-btn {
  font: 700 13px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 6px 10px; cursor: pointer;
}
.theme-btn:hover { border-color: var(--accent); }

main { padding-block: 28px 56px; }
.tool-page .mccp, .tool-page .mcdp { background: transparent; padding: 0; border-radius: 0; }

.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.site-footer .gutter { display: grid; gap: 6px; padding-block: 24px 32px; }
.site-footer p { margin: 0; max-width: 75ch; }
.foot-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 180px), 1fr)); gap: 16px 24px; margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.foot-links h2 { margin: 0 0 6px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.foot-links ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; }
.foot-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.foot-links a:hover { color: var(--accent); text-decoration: underline; }

/* Home */
.hero { display: grid; gap: 10px; padding-block: 12px 32px; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.hero h1 { margin: 0; font-size: clamp(34px, 6vw, 56px); line-height: 1.05; letter-spacing: -.02em; text-wrap: balance; }
.hero p { margin: 0; max-width: 58ch; font-size: 18px; color: var(--muted); }

.hero-stats { font-family: var(--mono); font-size: 14px !important; color: var(--accent) !important; }

.lang-pick { display: grid; gap: 10px; margin-bottom: 8px; }
.lang-pick h2 { margin: 0; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.lang-pick-list { display: flex; flex-wrap: wrap; gap: 8px; }
.lang-pick-list a {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-weight: 700;
  transition: border-color .15s, transform .15s;
}
.lang-pick-list a:hover { border-color: var(--accent); transform: translateY(-1px); color: var(--ink); }
.lang-pick-list a[aria-current] { border-color: var(--accent); box-shadow: inset 0 -3px 0 var(--accent); }
.lang-pick-list svg { width: 30px; height: 20px; border-radius: 3px; box-shadow: 0 0 0 1px rgba(0,0,0,.15); }

.finder { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; display: grid; gap: 10px; margin-top: 24px; padding: 12px 0; background: var(--bg); }
.finder input {
  width: 100%; font: 600 17px var(--font); color: var(--ink); background: var(--surface);
  border: 2px solid var(--line); border-radius: 8px; padding: 12px 14px;
}
.finder input:focus { border-color: var(--accent); outline: none; }
.chips { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; padding-bottom: 2px; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: none; font: 700 14px var(--font); color: var(--muted); background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 7px 14px; cursor: pointer;
}
.chip:hover { color: var(--ink); border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.finder-none { margin: 0; color: var(--muted); }
.group-sym { display: inline-grid; place-items: center; width: 26px; height: 26px; margin-right: 10px; border-radius: 6px; background: var(--accent); color: var(--accent-ink); font-size: 14px; letter-spacing: 0; }
.site-nav a.nav-all { color: var(--accent); }

.tool-group { display: grid; gap: 12px; margin-top: 28px; scroll-margin-top: 140px; }
.group-title { display: flex; align-items: center; margin: 0; font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.tool-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 14px; }
.tool-card {
  display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; align-items: start;
  background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px;
  color: var(--ink); text-decoration: none; transition: border-color .15s, transform .15s;
}
.tool-card:hover { border-color: var(--accent); color: var(--ink); transform: translateY(-2px); }
.tool-card svg { width: 56px; height: 56px; }
.tool-card h3 { margin: 0 0 4px; font-size: 18px; line-height: 1.25; }
.tool-card p { margin: 0; color: var(--muted); font-size: 15px; }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 12px 28px; margin-top: 40px; padding: 0; list-style: none; }
.facts li { display: grid; gap: 2px; padding-top: 12px; border-top: 2px solid var(--line); }
.facts strong { font-size: 16px; }
.facts span { color: var(--muted); font-size: 15px; }

.px-a { fill: var(--accent); }
.px-b { fill: var(--accent-hi); }
.px-s { fill: var(--stone); }
.px-m { fill: var(--mark); }

/* Shared tool parts: 3D preview, schematic download, shopping list button, "how it works" */
.extras { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 20px; align-items: start; margin-top: 24px; }
@media (max-width: 900px) { .extras { grid-template-columns: minmax(0, 1fr); } }
.extra-card { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 18px; display: grid; gap: 12px; min-width: 0; }
.extra-card h2 { margin: 0; font-size: 18px; line-height: 1.3; }
.extra-card p { margin: 0; max-width: 65ch; color: var(--muted); font-size: 14px; }
.extra-stack { display: grid; gap: 20px; min-width: 0; }

.iso { display: grid; gap: 10px; min-width: 0; }
.iso-bar { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; }
.iso-info { font-family: var(--mono); font-size: 13px; color: var(--muted); margin-left: auto; }
.iso-box { overflow: auto; max-height: 560px; padding: 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.iso-box canvas { display: block; margin: 0 auto; max-width: none; }
.iso-plan { display: grid; gap: 8px; padding-top: 6px; border-top: 1px solid var(--line); }
.iso-plan-head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; justify-content: space-between; }
.iso-steps { display: flex; gap: 6px; align-items: center; }
.iso-layer { font-family: var(--mono); font-weight: 600; min-width: 11ch; text-align: center; font-variant-numeric: tabular-nums; }
.iso-slider { width: 100%; accent-color: var(--accent); }
.iso-count { margin: 0; font-size: 14px; color: var(--muted); }
.iso-flat-box { max-height: 460px; }

.iso button, .bx button, .list-btn {
  font: 700 13px/1.3 var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 7px 12px; cursor: pointer;
}
.iso button:hover, .bx button:hover, .list-btn:hover { border-color: var(--accent); }
.iso .iso-glad[aria-pressed="true"], .iso .iso-man[aria-pressed="true"] { border-color: var(--accent); box-shadow: inset 0 -3px 0 var(--accent); }
.bx-go { background: var(--accent) !important; color: var(--accent-ink) !important; border-color: var(--accent) !important; }
.bx-go:disabled { opacity: .6; cursor: progress; }
.bx { display: grid; gap: 10px; }
.bx-row { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; }
.bx-row label { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.bx select, .bx input {
  font: 600 14px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 7px 8px; min-width: 0; max-width: 100%;
}
.bx input { font-family: var(--mono); flex: 1 1 220px; }
.bx-msg { margin: 0; font-size: 13px; color: var(--muted); min-height: 1.3em; }
.bx-help { font-size: 14px; color: var(--muted); }
.bx-help summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.bx-help ul { margin: 8px 0 0; padding-left: 18px; display: grid; gap: 6px; }
.bx-help code { font-family: var(--mono); font-size: 13px; background: var(--bg); padding: 1px 4px; border-radius: 3px; }

.pal-body { display: grid; gap: 12px; }
.pal-top { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.pal-row { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font-size: 14px; }
.pal-row > span:first-child { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.pal select, .pal input[type="number"] {
  font: 600 14px var(--font); color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 4px; padding: 6px 8px; min-width: 0; max-width: 100%;
}
.pal input[type="number"] { width: 72px; font-family: var(--mono); }
.pal-slots { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.pal-slots li { display: flex; gap: 8px; align-items: center; }
.pal-slots select { flex: 1 1 auto; }
.pal-sw { width: 22px; height: 22px; border-radius: 3px; border: 1px solid var(--line); flex: none; }
.pal-n { font-family: var(--mono); font-size: 13px; color: var(--muted); width: 2ch; text-align: right; flex: none; }
.pal-unit { font-size: 12px; color: var(--muted); }
.pal-map { display: grid; gap: 6px; }
.pal-map p, .pal-note { margin: 0; font-size: 13px; color: var(--muted); }
.pal-map .pal-row > span:first-child { min-width: 14ch; }
.pal-view label { display: inline-flex; gap: 5px; align-items: center; font-size: 14px; }
.pal-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.pal-table th { text-align: left; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 6px 4px; border-bottom: 1px solid var(--line); }
.pal-table td { padding: 5px 4px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.pal-table .n { text-align: right; font-family: var(--mono); white-space: nowrap; }

.mat-sum { margin: 0; font-weight: 700; color: var(--ink) !important; font-size: 15px !important; }
.mat-scroll { overflow-x: auto; }
.mat-table tfoot th { text-align: left; padding: 6px 4px; border-top: 2px solid var(--line); font-size: 13px; }
.mat-table tfoot th.n { text-align: right; font-family: var(--mono); }

/* Jacob, the helper in the corner */
.bob { position: fixed; z-index: 30; right: max(16px, env(safe-area-inset-right, 0px)); bottom: calc(16px + env(safe-area-inset-bottom, 0px)); display: grid; justify-items: end; gap: 10px; }
.bob-head {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px; border-radius: 999px; cursor: pointer;
  background: var(--surface); color: var(--ink); border: 2px solid var(--accent); font: 800 14px var(--font);
  box-shadow: 0 6px 18px rgba(0,0,0,.22); transition: transform .15s;
}
.bob-head:hover { transform: translateY(-2px); }
.bob-head svg { width: 34px; height: 34px; border-radius: 6px; image-rendering: pixelated; }
.bob-bubble {
  width: min(340px, calc(100vw - 32px)); background: var(--surface); color: var(--ink); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px; box-shadow: 0 10px 28px rgba(0,0,0,.25); display: grid; gap: 10px; position: relative;
}
.bob-bubble::after { content: ""; position: absolute; right: 28px; bottom: -8px; width: 14px; height: 14px; background: var(--surface); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transform: rotate(45deg); }
.bob-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.bob-role { display: block; font: 400 11px var(--mono); letter-spacing: .04em; color: var(--muted); margin-top: 2px; }
.bob-x { background: none; border: 0; color: var(--muted); font-size: 22px; line-height: 1; cursor: pointer; padding: 0 4px; }
.bob-tip { margin: 0; font-size: 15px; line-height: 1.5; }
.bob-actions { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.bob-count { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.bob-next { font: 700 13px var(--font); color: var(--accent-ink); background: var(--accent); border: 0; border-radius: 4px; padding: 7px 12px; cursor: pointer; }
@media print { .bob { display: none; } }
@media (prefers-reduced-motion: reduce) { .bob-head { transition: none; } }

.how { display: grid; gap: 10px; font-size: 15px; }
.how p { color: var(--ink); }
.how ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; max-width: 70ch; }
.how code, .how .calc { font-family: var(--mono); font-size: 14px; background: var(--bg); padding: 1px 5px; border-radius: 3px; }
.how .calc-block { font-family: var(--mono); font-size: 14px; background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; white-space: pre-wrap; overflow-x: auto; }

.notfound { display: grid; gap: 12px; padding-block: 40px; }
.notfound h1 { margin: 0; font-size: 40px; }
.notfound p { margin: 0; color: var(--muted); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
.iso-dims { margin: 0; font-size: 13px; color: var(--muted); font-family: var(--mono); }

[hidden] { display: none !important; }
.iso-mat-wrap { overflow-x: auto; }
.iso-mat { font-size: 13px; }
.iso-mat tfoot th { text-align: left; padding: 6px 4px; border-top: 2px solid var(--line); }
.iso-mat tfoot th.n { text-align: right; font-family: var(--mono); }
.iso-mat .iso-mat-dim td { color: var(--muted); }

/* static info cards (build_info.py): history, about, FAQ */
.info-card h3 { margin: 6px 0 0; font-size: 16px; }
.info-card p { max-width: 70ch; }
.info-facts { margin: 0; padding-left: 20px; display: grid; gap: 6px; max-width: 70ch; }
.info-faq details { border-top: 1px solid var(--line); padding: 8px 0; max-width: 70ch; }
.info-faq summary { cursor: pointer; font-weight: 600; }
.info-faq details p { margin-top: 6px; }

/* languages that are not ready yet: greyed out, not clickable */
.lang-menu li.soon span { display: flex; align-items: center; gap: 8px; padding: 7px 12px; opacity: .45; cursor: default; filter: grayscale(1); }
.lang-menu li.soon small, .lang-pick-list .soon small { font-size: 11px; color: var(--muted); margin-left: auto; padding-left: 10px; white-space: nowrap; }
.lang-pick-list .soon { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px dashed var(--line); border-radius: 6px; opacity: .5; filter: grayscale(1); cursor: default; }
.lang-pick-list .soon svg { width: 30px; height: 20px; border-radius: 3px; box-shadow: 0 0 0 1px rgba(0,0,0,.15); }