/* ==========================================================================
   Stephen Fernie - portfolio
   Light out of the box, dark on request (the switch in the top bar). Every
   colour is a token: the light set first, the dark set under [data-theme].
   Blue carries trust; orange is kept for the one thing to press.
   ========================================================================== */

:root {
  --ground:      #FFFFFF;
  --band:        #F4F7FC;
  --hero-a:      #EAF1FF;
  --hero-b:      #FFFFFF;
  --surface:     #FFFFFF;
  --surface-2:   #F5F7FB;
  --ink:         #0E1A2B;
  --ink-2:       #33415A;
  --muted:       #5B6982;
  --rule:        #DAE2EE;
  --rule-2:      #E9EEF6;
  --accent:      #2255E4;
  --accent-ink:  #FFFFFF;
  --accent-soft: #E5EDFF;
  --cta:         #D24B0C;
  --cta-hover:   #B53F08;
  --cta-ink:     #FFFFFF;
  --tape:        #F4C430;
  --tape-ink:    #1A1810;
  --ok:          #1E8454;
  --ok-soft:     #DDF3E7;
  --warn:        #A86A0A;
  --warn-soft:   #FBEBC8;
  --bad:         #C0392B;
  --bad-soft:    #FBE0DC;
  --shadow:      0 1px 2px rgba(14, 26, 43, .05), 0 8px 24px rgba(14, 26, 43, .07);
  --shadow-up:   0 2px 4px rgba(14, 26, 43, .06), 0 14px 34px rgba(34, 85, 228, .12);

  --f-display: "Archivo", "Arial", "Segoe UI", system-ui, sans-serif;
  --f-body:    "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --s-1: .8125rem;   /* 13 */
  --s0:  .9375rem;   /* 15 */
  --s1:  1.0625rem;  /* 17 */
  --s2:  1.375rem;   /* 22 */
  --s3:  1.75rem;    /* 28 */
  --s4:  clamp(2.6rem, 7.5vw, 4.5rem);

  --radius: 8px;
  --wrap: 1120px;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --ground:      #0A111E;
  --band:        #0E1729;
  --hero-a:      #12224A;
  --hero-b:      #0A111E;
  --surface:     #121C30;
  --surface-2:   #17233B;
  --ink:         #E8EEF8;
  --ink-2:       #C3CEE0;
  --muted:       #92A1BA;
  --rule:        #25324C;
  --rule-2:      #1C2840;
  --accent:      #7AA2FF;
  --accent-ink:  #0A111E;
  --accent-soft: #1A2A50;
  --cta:         #FF8A3D;
  --cta-hover:   #FFA262;
  --cta-ink:     #1B0D02;
  --tape:        #E9BC2C;
  --tape-ink:    #15130B;
  --ok:          #4CC98A;
  --ok-soft:     #133325;
  --warn:        #E7AA45;
  --warn-soft:   #3A2C12;
  --bad:         #F07A68;
  --bad-soft:    #3D1D1A;
  --shadow:      0 1px 2px rgba(0, 0, 0, .35), 0 8px 24px rgba(0, 0, 0, .3);
  --shadow-up:   0 2px 4px rgba(0, 0, 0, .35), 0 14px 34px rgba(0, 0, 0, .45);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 var(--s0)/1.55 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
p { margin: 0; }
a { color: var(--accent); text-underline-offset: 2px; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
.num, .mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 50; background: var(--surface); padding: 8px 12px; border-radius: var(--radius); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 18px; border-radius: var(--radius);
  border: 1px solid var(--rule); background: var(--surface); color: var(--ink);
  font-weight: 600; font-size: var(--s0); text-decoration: none; cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s, box-shadow .15s;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.cta { background: var(--cta); border-color: var(--cta); color: var(--cta-ink); box-shadow: 0 6px 16px rgba(210, 75, 12, .22); }
.btn.cta:hover { background: var(--cta-hover); border-color: var(--cta-hover); transform: translateY(-1px); }
.btn.ghost { background: transparent; }
.btn.small { min-height: 32px; padding: 0 12px; font-size: var(--s-1); }
.btn.ext::after { content: "\2197"; font-weight: 400; }
.btn.go::after { content: "\2192"; font-weight: 400; transition: transform .15s; }
.btn.go:hover::after { transform: translateX(3px); }

/* a switched-off control: visibly there, visibly not available */
.lk { display: inline-flex; align-items: center; gap: 6px; cursor: not-allowed; opacity: .62; }
.lk:hover { opacity: .8; }
.ic-lock { width: 12px; height: 12px; flex: none; vertical-align: -1px; }

/* ---------- top bar + theme switch ---------- */
.site-top { background: var(--hero-a); }
body.in-demo .site-top { background: var(--ground); border-bottom: 1px solid var(--rule-2); }
.topbar { display: flex; align-items: center; gap: 16px; padding-top: 14px; padding-bottom: 14px; }
.mark {
  display: inline-flex; align-items: center; gap: 10px; margin-right: auto;
  font: 700 var(--s0)/1 var(--f-display); color: var(--ink); text-decoration: none;
}
.mark i {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; font-style: normal;
  background: var(--accent); color: var(--accent-ink); font: 800 13px/1 var(--f-display); letter-spacing: .02em;
}
.topnav { display: none; gap: 20px; }
@media (min-width: 640px) { .topnav { display: flex; } }
.topnav a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: var(--s-1); }
.topnav a:hover { color: var(--accent); }
.theme-btn {
  width: 38px; height: 38px; border-radius: 999px; border: 1px solid var(--rule); background: var(--surface);
  display: grid; place-items: center; cursor: pointer; color: var(--ink-2);
}
.theme-btn:hover { border-color: var(--muted); color: var(--ink); }
.theme-btn svg { width: 18px; height: 18px; }
.theme-btn .moon { display: block; }
.theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: block; }

/* ---------- home: hero ---------- */
.hero { background: linear-gradient(180deg, var(--hero-a) 0%, var(--hero-b) 100%); }
.intro { padding-top: 40px; padding-bottom: 48px; display: grid; gap: 18px; }
@media (min-width: 720px) { .intro { padding-top: 56px; padding-bottom: 64px; } }
.hello { font: 600 var(--s-1)/1 var(--f-body); color: var(--accent); letter-spacing: .02em; }
.name {
  font-family: var(--f-display); font-weight: 800; font-stretch: 108%;
  font-size: var(--s4); line-height: .98; letter-spacing: -.015em;
}
.pitch { font-size: clamp(1.1875rem, 2.6vw, 1.5rem); line-height: 1.4; max-width: 36ch; color: var(--ink-2); }
.role { color: var(--muted); font-size: var(--s1); }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
/* ---------- home: project cards ---------- */
.work-band { background: var(--band); padding: 48px 0 56px; border-top: 1px solid var(--rule-2); border-bottom: 1px solid var(--rule-2); }
.sec-head { display: grid; gap: 6px; margin-bottom: 24px; }
.sec {
  font-family: var(--f-display); font-weight: 800; font-stretch: 104%;
  font-size: clamp(1.6rem, 3.6vw, 2.2rem); line-height: 1.1;
}
.sec-sub { color: var(--muted); max-width: 62ch; }
.work { display: grid; gap: 18px; }
.proj {
  display: grid; gap: 20px; padding: 22px; scroll-margin-top: 24px;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.proj:hover { box-shadow: var(--shadow-up); }
@media (min-width: 880px) {
  .proj { grid-template-columns: minmax(0, 1fr) 290px; gap: 36px; padding: 30px 32px; }
}
.proj-main { display: grid; gap: 14px; align-content: start; }
.kick {
  justify-self: start; display: inline-flex; align-items: center; gap: 8px;
  font: 600 12px/1 var(--f-body); letter-spacing: .02em; color: var(--accent);
  background: var(--accent-soft); padding: 6px 10px; border-radius: 999px;
}
.kick::before { content: ""; width: 7px; height: 7px; border-radius: 999px; background: currentColor; }
.kick.live { color: var(--ok); background: var(--ok-soft); }
.proj h3 {
  font-family: var(--f-display); font-weight: 800; font-stretch: 106%;
  font-size: var(--s3); line-height: 1.1;
}
.pts { display: grid; gap: 16px; }
@media (min-width: 640px) { .pts { grid-template-columns: 1fr 1fr; gap: 24px; } }
.pts h4 { font: 700 11.5px/1 var(--f-body); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 10px; }
.pts ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.pts li { position: relative; padding-left: 26px; line-height: 1.5; }
.pts li::before {
  content: ""; position: absolute; left: 0; top: .2em; width: 17px; height: 17px; border-radius: 999px;
}
.pts .is li::before { background: var(--accent-soft); box-shadow: inset 0 0 0 5.5px var(--accent-soft), inset 0 0 0 9px var(--accent); }
.pts .won li::before {
  background: var(--ok) no-repeat center / 11px 11px
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.2 6.3l2.4 2.4 5.2-5.4' fill='none' stroke='white' stroke-width='1.9' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.pts .won li { color: var(--ink); font-weight: 500; }
.proj-side { display: grid; gap: 10px; align-content: start; }
.proj-side .btn { width: 100%; }
.side-note { font-size: var(--s-1); color: var(--muted); text-align: center; }

/* the little figure on each card: what the tool looks like, in miniature */
.fig {
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 12px; font: 500 11.5px/1.3 var(--f-mono); color: var(--ink-2);
  font-variant-numeric: tabular-nums; margin-bottom: 4px;
}
.fq-head, .fq-row { display: grid; grid-template-columns: 1fr repeat(4, 38px); gap: 4px; align-items: center; }
.fq-head { color: var(--muted); font-size: 10px; margin-bottom: 6px; }
.fq-head span:not(:first-child) { text-align: center; }
.fq-row { margin-top: 4px; }
.fq-row span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fq-row b { text-align: center; padding: 4px 0; border-radius: 3px; background: var(--surface-2); font-weight: 500; }
.fq-row b.h2 { background: var(--warn-soft); color: var(--warn); }
.fq-row b.h4 { background: var(--bad); color: var(--surface); }
.fq-row b.h0 { color: var(--muted); }
.fs-box {
  border: 1px solid var(--rule); border-radius: 4px; padding: 7px 9px; margin-bottom: 8px;
  font-family: var(--f-body); font-size: 13px; background: var(--surface-2);
}
.caret { display: inline-block; width: 1px; height: 14px; background: var(--ink); vertical-align: -2px; margin-left: 1px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.fs-hit { display: flex; justify-content: space-between; gap: 8px; padding: 5px 2px; border-top: 1px solid var(--rule-2); font-family: var(--f-body); font-size: 12.5px; }
.fs-hit b { background: var(--warn-soft); color: var(--ink); font-weight: 600; border-radius: 2px; padding: 0 1px; }
.fs-hit i { font-style: normal; color: var(--muted); font-family: var(--f-mono); font-size: 10.5px; }
.fc-bar { display: grid; grid-template-columns: repeat(12, 1fr); gap: 2px; margin-bottom: 6px; }
.fc-bar i { height: 16px; border-radius: 2px; background: var(--ok); opacity: .85; }
.fc-bar i.short { background: var(--warn); }
.fc-bar i.bad { background: var(--bad); }
.fc-lbl { display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; }
.fc-lbl span:first-child::before { content: "\2191 "; }
.fc-lbl span:last-child::after { content: " \2193"; }
.fk-in { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.fk-in span { border: 1px solid var(--rule); border-radius: 3px; padding: 3px 6px; background: var(--surface-2); }
.fk-out { font-family: var(--f-body); font-size: 13px; color: var(--muted); }
.fk-out b { font: 800 30px/1 var(--f-display); font-stretch: 110%; color: var(--ink); margin-right: 6px; vertical-align: -3px; }
.fl-url { color: var(--accent); margin-bottom: 6px; }
.fl-row { display: grid; grid-template-columns: 36px 1fr; gap: 6px; padding: 3px 0; border-top: 1px solid var(--rule-2); }
.fl-row span { color: var(--muted); }


/* ---------- home: skills, contact, footer ---------- */
.skills { padding-top: 56px; padding-bottom: 40px; }
.sk { margin: 0; display: grid; gap: 14px; }
@media (min-width: 820px) { .sk { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; } }
.sk > div { display: grid; gap: 8px; align-content: start; padding: 18px 20px; border: 1px solid var(--rule); border-radius: 12px; background: var(--surface); }
.sk dt { font: 700 var(--s1)/1.2 var(--f-display); color: var(--ink); }
.sk dd { margin: 0; color: var(--ink-2); }
.talk { padding-bottom: 40px; }
.talk-in {
  display: grid; gap: 14px; justify-items: start; padding: 28px; border-radius: 16px;
  background: linear-gradient(135deg, var(--accent) 0%, #3B6CF0 100%); color: #FFFFFF;
}
:root[data-theme="dark"] .talk-in { background: linear-gradient(135deg, #1D3F9E 0%, #2A4FB8 100%); }
@media (min-width: 720px) { .talk-in { grid-template-columns: 1fr auto; align-items: center; padding: 32px 36px; } }
.talk h2 { font: 800 clamp(1.5rem, 3.4vw, 2rem)/1.1 var(--f-display); }
.talk p { opacity: .9; margin-top: 6px; }
.talk .cta-row { margin: 0; }
.talk .btn { background: #FFFFFF; border-color: #FFFFFF; color: #0E1A2B; }
.talk .btn.ghost { background: transparent; color: #FFFFFF; border-color: rgba(255, 255, 255, .6); }
.foot { padding-top: 8px; padding-bottom: 56px; display: grid; gap: 6px; color: var(--muted); font-size: var(--s-1); }
.foot .priv { max-width: 72ch; }

/* ---------- demo frame ---------- */
.tape {
  position: sticky; top: 0; z-index: 20;
  background:
    repeating-linear-gradient(135deg, var(--tape-ink) 0 8px, var(--tape) 8px 16px) left / 44px 100% no-repeat,
    repeating-linear-gradient(135deg, var(--tape-ink) 0 8px, var(--tape) 8px 16px) right / 44px 100% no-repeat,
    var(--tape);
  color: var(--tape-ink);
  padding: 8px 56px; text-align: center; font-size: var(--s-1); line-height: 1.35;
}
.tape b {
  font: 800 var(--s-1)/1 var(--f-display); font-stretch: 120%; text-transform: uppercase; letter-spacing: .16em;
  margin-right: 8px;
}
.tape .ic-lock { color: var(--tape-ink); }
.demo-head { padding-top: 20px; padding-bottom: 16px; display: grid; gap: 6px; }
.back { font-weight: 600; text-decoration: none; justify-self: start; }
.back:hover { text-decoration: underline; }
#demoTitle { font-family: var(--f-display); font-weight: 750; font-stretch: 115%; font-size: var(--s3); line-height: 1.05; }
#demoNote { color: var(--muted); max-width: 70ch; }
.demo-stage { padding-bottom: 64px; }

/* a demo app sits in a window of its own, so it reads as "the tool" and not the page */
.app {
  background: var(--surface); border: 1px solid var(--rule); border-radius: 8px;
  box-shadow: var(--shadow); overflow: hidden;
}
.app-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px;
  padding: 10px 14px; border-bottom: 1px solid var(--rule); background: var(--surface-2);
}
.app-name { font: 700 var(--s0)/1.2 var(--f-display); font-stretch: 110%; margin-right: auto; }
.tabs { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; padding: 0 14px; border-bottom: 1px solid var(--rule); }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex: none; border: 0; background: none; padding: 10px 12px; font-size: var(--s-1); font-weight: 500;
  color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; cursor: pointer;
}
.tab.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; cursor: default; }
.app-body { padding: 16px; }
@media (min-width: 720px) { .app-body { padding: 20px; } }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.toolbar .grow { margin-right: auto; }
.chip {
  border: 1px solid var(--rule); background: var(--surface); border-radius: 999px;
  padding: 5px 12px; font-size: var(--s-1); cursor: pointer;
}
.chip.on { background: var(--ink); border-color: var(--ink); color: var(--surface); }
.hint { font-size: var(--s-1); color: var(--muted); }
.scroll-x { overflow-x: auto; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.stat { border: 1px solid var(--rule); border-radius: var(--radius); padding: 10px 12px; }
.stat .k { font-size: var(--s-1); color: var(--muted); }
.stat .v { font: 700 var(--s2)/1.2 var(--f-mono); font-variant-numeric: tabular-nums; }
.stat.bad .v { color: var(--bad); }

/* tables inside demos */
.tbl { width: 100%; border-collapse: collapse; font-size: var(--s-1); font-variant-numeric: tabular-nums; }
.tbl th { text-align: left; font-weight: 600; color: var(--muted); padding: 8px 8px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.tbl td { padding: 8px 8px; border-bottom: 1px solid var(--rule-2); vertical-align: middle; }
.tbl .r { text-align: right; }
.tbl .c { text-align: center; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translate(-50%, 20px);
  background: var(--ink); color: var(--surface); padding: 10px 16px; border-radius: var(--radius);
  font-size: var(--s-1); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 40;
  max-width: calc(100vw - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- demo: queue board ---------- */
.qd .stats { max-width: 560px; }
.qd-how { margin-bottom: 10px; max-width: 72ch; }
.qd-board { min-width: 720px; }
.qd-board td { padding: 6px 8px; }
.qd-board tr.sel td { background: var(--accent-soft); }
.rank {
  display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 4px;
  background: var(--ink); color: var(--surface); font: 600 12px/1 var(--f-mono);
}
.qname {
  border: 0; background: none; padding: 0; cursor: pointer; font-weight: 600; color: var(--accent);
  text-align: left; white-space: nowrap;
}
.qname:hover { text-decoration: underline; }
.pill {
  display: inline-block; min-width: 30px; text-align: center; padding: 2px 8px; border-radius: 999px;
  background: var(--bad-soft); color: var(--bad); font: 600 12px/1.4 var(--f-mono);
}
.zero { color: var(--muted); }
.cell {
  display: inline-block; min-width: 40px; padding: 3px 0; border-radius: 3px; text-align: center;
  font: 500 12.5px/1.4 var(--f-mono); background: var(--surface-2);
}
.cell.hz { background: none; color: var(--muted); }
.cell.h2 { background: var(--warn-soft); color: var(--warn); }
.cell.h3 { background: var(--bad-soft); color: var(--bad); }
.cell.h4 { background: var(--bad); color: var(--surface); font-weight: 600; }
.qd-drill { margin-top: 18px; border: 1px solid var(--rule); border-radius: var(--radius); }
.qd-dhead {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 10px;
  padding: 12px 14px; border-bottom: 1px solid var(--rule); background: var(--surface-2);
}
.qd-dhead h4 { font: 700 var(--s1)/1.2 var(--f-display); font-stretch: 110%; }
.qd-dact { display: flex; flex-wrap: wrap; gap: 8px; }
.qd-list { max-height: 380px; overflow-y: auto; }
.qd-list .tbl { min-width: 560px; }
.qd-list thead th { position: sticky; top: 0; background: var(--surface); }
.late { color: var(--bad); font-weight: 600; }
@media (max-width: 560px) { .stats { grid-template-columns: 1fr 1fr 1fr; } .stat .v { font-size: var(--s1); } }

/* ---------- demo: knowledge hub ---------- */
.kh-search { padding: 16px; border-bottom: 1px solid var(--rule); display: grid; gap: 8px; }
.kh-lbl { font-size: var(--s-1); font-weight: 600; color: var(--muted); }
#khQ {
  width: 100%; min-height: 44px; padding: 8px 12px; border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--surface-2); font-size: var(--s1);
}
#khQ:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.kh-sugg { display: flex; flex-wrap: wrap; gap: 6px; }
.kh-main { display: grid; }
@media (min-width: 900px) { .kh-main { grid-template-columns: 150px minmax(0, 1fr) minmax(0, 1.15fr); min-height: 460px; } }
.kh-cats { display: flex; gap: 4px; overflow-x: auto; padding: 10px 12px; border-bottom: 1px solid var(--rule); scrollbar-width: none; }
.kh-cats::-webkit-scrollbar { display: none; }
@media (min-width: 900px) { .kh-cats { flex-direction: column; border-bottom: 0; border-right: 1px solid var(--rule); padding: 12px 8px; } }
.kh-cats button {
  flex: none; border: 0; background: none; text-align: left; padding: 7px 10px; border-radius: 4px;
  font-size: var(--s-1); color: var(--ink-2); cursor: pointer; white-space: nowrap;
}
.kh-cats button:hover { background: var(--surface-2); }
.kh-cats button.on { background: var(--accent-soft); color: var(--ink); font-weight: 600; }
.kh-results { padding: 12px; display: grid; gap: 8px; align-content: start; }
@media (min-width: 900px) { .kh-results { border-right: 1px solid var(--rule); max-height: 560px; overflow-y: auto; } }
#khList { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.kh-item {
  width: 100%; text-align: left; display: grid; gap: 3px; padding: 10px 12px; cursor: pointer;
  border: 1px solid var(--rule-2); border-radius: var(--radius); background: var(--surface);
}
.kh-item:hover { border-color: var(--rule); background: var(--surface-2); }
.kh-item.on { border-color: var(--accent); background: var(--accent-soft); }
.kh-t { font-weight: 600; }
.kh-m { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.kh-s { font-size: var(--s-1); color: var(--ink-2); }
mark { background: var(--warn-soft); color: inherit; border-radius: 2px; padding: 0 1px; }
.kh-type { font: 600 10.5px/1 var(--f-mono); text-transform: uppercase; letter-spacing: .06em; padding: 3px 6px; border-radius: 3px; }
.t-process { background: var(--accent-soft); color: var(--accent); }
.t-macro { background: var(--warn-soft); color: var(--warn); }
.t-script { background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--rule); }
.kh-read { padding: 16px; display: grid; gap: 12px; align-content: start; border-top: 1px solid var(--rule); scroll-margin-top: 48px; }
@media (min-width: 900px) { .kh-read { border-top: 0; padding: 20px; } }
.kh-read h4 { font: 700 var(--s2)/1.2 var(--f-display); font-stretch: 108%; }
.kh-empty { padding: 24px 0; }
.kh-steps { margin: 0; padding-left: 22px; display: grid; gap: 8px; max-width: 60ch; }
.kh-steps li::marker { font-family: var(--f-mono); color: var(--muted); }
.kh-macro { border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.kh-mhead {
  display: flex; justify-content: space-between; align-items: center; padding: 6px 6px 6px 12px;
  background: var(--surface-2); border-bottom: 1px solid var(--rule); font-size: var(--s-1); font-weight: 600;
}
.kh-macro pre {
  margin: 0; padding: 12px; white-space: pre-wrap; word-break: break-word;
  font: 400 13px/1.55 var(--f-mono); color: var(--ink-2);
}
.kh-foot { display: flex; flex-wrap: wrap; gap: 8px; }
.kh-none { padding: 12px 0; }

/* ---------- demo: roster ---------- */
.wf-tz { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; font-size: var(--s-1); color: var(--muted); justify-content: flex-end; }
.wf-tz select { border: 1px solid var(--rule); border-radius: 4px; background: var(--surface); padding: 5px 8px; color: var(--ink); }
.btn:disabled { opacity: .45; cursor: default; }
.wf-sum { margin-bottom: 12px; font-size: var(--s0); }
.wf-sum .bad { color: var(--bad); }
.wf-sum .ok { color: var(--ok); }
.wf-grid { display: grid; gap: 3px; }
.wf-row { display: grid; gap: 4px 12px; align-items: center; }
@media (min-width: 760px) { .wf-row { grid-template-columns: 190px minmax(0, 1fr); } }
.wf-who { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 8px; min-width: 0; }
.wf-who b { font-weight: 600; font-size: var(--s-1); }
.wf-who span { font-size: 11.5px; color: var(--muted); white-space: nowrap; }
@media (min-width: 760px) { .wf-who { display: grid; gap: 0; } }
.wf-lane { display: grid; grid-template-columns: repeat(48, minmax(0, 1fr)); gap: 1px; }
.wf-lane > i { height: 14px; display: block; }
.c-off { background: transparent; }
.c-on { background: var(--accent-soft); }
.c-tea { background: var(--warn); }
.c-lunch { background: var(--ink-2); }
.wf-lane > i.c-on, .wf-lane > i.c-tea, .wf-lane > i.c-lunch { transition: background .35s; }
.wf-axis .wf-lane > i { height: auto; }
.wf-tick { font: 500 10px/1.2 var(--f-mono); color: var(--muted); white-space: nowrap; overflow: visible; font-style: normal; }
@media (max-width: 560px) { .wf-tick.odd { visibility: hidden; } }
.wf-axis { margin-bottom: 2px; }
.wf-cov { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--rule); }
.wf-cov .wf-lane > i { height: 26px; display: grid; place-items: center; border-radius: 2px; transition: background .35s; font-style: normal; }
.wf-cov .wf-lane > i span { font: 600 9px/1 var(--f-mono); letter-spacing: -.04em; color: var(--surface); display: none; }
@media (min-width: 1100px) { .wf-cov .wf-lane > i span { display: block; } }
.v-ok { background: var(--ok); }
.v-short { background: var(--warn); }
.v-bad { background: var(--bad); }
.wf-key { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 14px; font-size: 12px; color: var(--muted); }
.wf-key span { display: inline-flex; align-items: center; gap: 6px; }
.wf-key i { width: 14px; height: 10px; display: inline-block; border-radius: 2px; }
.k-on { background: var(--accent-soft); outline: 1px solid var(--rule); }
.k-tea { background: var(--warn); }
.k-lunch { background: var(--ink-2); }
.k-ok { background: var(--ok); }
.k-short { background: var(--warn); }
.k-bad { background: var(--bad); }

/* ---------- demo: staffing calculator ---------- */
.sc-body { display: grid; gap: 24px; }
@media (min-width: 860px) { .sc-body { grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 36px; } }
.sc-in { display: grid; gap: 14px; align-content: start; }
.sc-in label { display: grid; gap: 6px; font-size: var(--s-1); font-weight: 600; color: var(--ink-2); }
.sc-in label > span { display: flex; justify-content: space-between; }
.sc-in output { font-family: var(--f-mono); font-weight: 500; color: var(--ink); }
.sc-in input[type="number"], .sc-in select {
  min-height: 40px; padding: 6px 10px; border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--surface-2); font-weight: 400; font-size: var(--s0);
}
.sc-in input[type="number"] { font-family: var(--f-mono); }
.sc-in input[type="range"] { accent-color: var(--accent); width: 100%; }
.sc-out { display: grid; gap: 12px; align-content: start; }
.sc-big { display: flex; align-items: baseline; gap: 12px; }
.sc-big b { font: 800 clamp(3rem, 9vw, 4.5rem)/1 var(--f-display); font-stretch: 112%; font-variant-numeric: tabular-nums; }
.sc-big span { font-size: var(--s1); color: var(--muted); }
.sc-split { color: var(--ink-2); max-width: 60ch; }
.sc-out .stats { margin-bottom: 0; }
.sc-chart { margin: 0; border: 1px solid var(--rule); border-radius: var(--radius); padding: 10px 12px; display: grid; gap: 6px; }
.sc-chart svg { width: 100%; height: auto; display: block; max-height: 220px; }
.sc-grid { stroke: var(--rule-2); stroke-width: 1; }
.sc-ax { fill: var(--muted); font: 500 9px var(--f-mono); }
.sc-ax.on { fill: var(--ink); font-weight: 700; }
.sc-bar { fill: var(--rule); }
.sc-bar.ok { fill: var(--accent-soft); stroke: var(--accent); stroke-width: .75; }
.sc-bar.on { fill: var(--accent); }
.sc-target { stroke: var(--warn); stroke-width: 1.25; stroke-dasharray: 4 3; }
.sc-tl { fill: var(--warn); }
.sc-out > .btn { justify-self: start; }