/* Case 01, my e-commerce business: page-only pieces on top of work/_case/case.css (shared template).
   The loop diagram is this case's signature object, inside the shared dark stage. */
.badge { display: inline-block; margin-right: 6px; padding: 4px 8px; border-radius: var(--r-pill); border: 1px solid var(--line-2); text-transform: uppercase; letter-spacing: .06em; font: 500 10px/1 var(--mono); vertical-align: 1px; }
.badge.on { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.cons { list-style: none; margin: var(--sp5) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-2); }
.cons li { padding: 20px 22px 0 0; margin-right: 22px; border-right: 1px solid var(--line); font-size: 14.5px; line-height: 1.6; color: var(--ink-2); font-weight: 300; }
.cons li:last-child { border-right: 0; margin-right: 0; }
.cons b { display: block; margin-bottom: 8px; font: 500 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }

/* what I built */
.built { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp2); margin-top: var(--sp5); }
.built article { display: flex; flex-direction: column; padding: 24px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--bg-2); transition: border-color .3s, transform .5s var(--ease); }
.built article:hover { border-color: var(--line-2); transform: translateY(-3px); }
:root[data-theme="light"] .built article { box-shadow: var(--shadow); }
.b-no { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line-2); font: 500 11px/1 var(--mono); color: var(--accent); }
.built h3 { margin: var(--sp4) 0 0; font-size: 22px; font-weight: 500; letter-spacing: -.03em; }
.built p { margin: 10px 0 0; font-size: 14.5px; line-height: 1.62; color: var(--ink-2); font-weight: 300; }
.built .b-t { margin-top: auto; padding-top: var(--sp3); font: 400 11.5px/1.5 var(--mono); color: var(--muted); }

/* how it works: flow diagram */
.flow { margin: 0; padding: var(--sp2) var(--sp4) 0; }
.flow-svg { display: block; width: 100%; height: auto; overflow: visible; }
.flow-svg .lk { fill: none; stroke: var(--line-2); stroke-width: 1.2; transition: stroke .3s, opacity .3s; }
.flow-svg .lk.fly { stroke: var(--accent); stroke-width: 1.4; stroke-dasharray: 5 7; opacity: .0; }
.flow-svg .lk.on { stroke: var(--accent); opacity: 1; }
.flow-svg .ah { fill: var(--line-2); }
.flow-svg .pulse { fill: var(--accent); filter: drop-shadow(0 0 5px var(--accent)); }
.fn { cursor: pointer; outline: none; }
.fn rect.box { fill: var(--bg-2); stroke: var(--line-2); stroke-width: 1; transition: stroke .3s, fill .3s; }
.fn:hover rect.box, .fn:focus-visible rect.box, .fn.on rect.box { stroke: var(--accent); fill: color-mix(in srgb, var(--accent) 9%, var(--bg-2)); }
.fn:focus-visible rect.box { stroke-width: 2; }
.fn .no { font: 500 10px var(--mono); letter-spacing: .08em; fill: var(--accent); }
.fn .nm { font: 500 14px var(--sans); letter-spacing: -.01em; fill: var(--ink); }
.fn .sb { font: 400 11px var(--mono); fill: var(--muted); }
.fn.dim { opacity: .45; }
.flow-svg .grp { font: 500 10px var(--mono); letter-spacing: .12em; text-transform: uppercase; fill: var(--muted); }
.flow-svg .grpbox { fill: none; stroke: var(--line); stroke-dasharray: 3 5; }
.flow-cap { display: grid; grid-template-columns: 150px 1fr; gap: 14px; margin-top: var(--sp2); padding: 14px 4px 10px; border-top: 1px solid var(--line); min-height: 64px; }
.fc-k { margin: 0; font: 500 10.5px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.fc-t { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--ink-2); font-weight: 300; }
.flow-list { display: none; list-style: none; margin: var(--sp2) 0 0; padding: 0; }
.flow-list li { padding: 12px 0; border-top: 1px solid var(--line); font-size: 14px; line-height: 1.55; color: var(--ink-2); }
.flow-list b { display: block; font-weight: 500; color: var(--ink); }

/* query / chart / decision */
.qcd { margin-top: var(--sp4); border-radius: var(--r-xl); overflow: hidden; }
.tabs { position: relative; display: flex; gap: 4px; padding: 8px; border-bottom: 1px solid var(--line); }
.tabs button { position: relative; z-index: 1; display: inline-flex; gap: 10px; align-items: center; padding: 10px 18px; border: 0; border-radius: var(--r-pill); background: none; font-size: 14px; font-weight: 500; color: var(--ink-2); cursor: pointer; transition: color .25s; }
.tabs button span { font: 500 10.5px/1 var(--mono); color: var(--muted); }
.tabs button[aria-selected="true"] { color: var(--ink); }
.tabs button[aria-selected="true"] span { color: var(--accent); }
.tabs button:hover { color: var(--ink); }
.tab-ind { position: absolute; z-index: 0; top: 8px; bottom: 8px; left: 0; width: 0; border-radius: var(--r-pill); background: var(--line); box-shadow: inset 0 0 0 1px var(--line-2); transition: transform .5s var(--ease-out), width .5s var(--ease-out); }
.pane { padding: var(--sp4) var(--sp4) var(--sp3); }
.pane:focus-visible { outline-offset: -4px; }
.pq { margin: 0; font: 400 12px/1.5 var(--mono); color: var(--muted); }
.pq b { display: block; margin-top: 6px; font: 400 20px/1.35 var(--sans); letter-spacing: -.02em; color: var(--ink); }
.sqlbox { margin: var(--sp3) 0 0; padding: 20px 22px; border-radius: var(--r-md); background: color-mix(in srgb, var(--ink) 5%, transparent); border: 1px solid var(--line); overflow-x: auto; font: 400 13px/1.7 var(--mono); color: var(--ink-2); tab-size: 2; }
.sqlbox code { font: inherit; white-space: pre; }
.sqlbox .cm { color: var(--muted); }
.src { margin: var(--sp3) 0 0; font: 400 11px/1.55 var(--mono); color: var(--muted); }
.pareto-head { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--sp3); flex-wrap: wrap; }
.pr-read b { display: block; font: 300 60px/1 var(--sans); letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.pr-read span { display: block; margin-top: 8px; font-size: 14px; color: var(--ink-2); }
.pr-read em { font-style: normal; color: var(--ink); font-weight: 500; }
.pr-range { display: grid; gap: 8px; min-width: 260px; font: 400 12px/1.4 var(--mono); color: var(--muted); }
.pr-range input { -webkit-appearance: none; appearance: none; width: 100%; height: 24px; margin: 0; background: transparent; cursor: pointer; }
.pr-range input::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--accent) var(--fill, 20%), var(--line-2) var(--fill, 20%)); }
.pr-range input::-moz-range-track { height: 4px; border-radius: 4px; background: var(--line-2); }
.pr-range input::-moz-range-progress { height: 4px; border-radius: 4px; background: var(--accent); }
.pr-range input::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%; background: var(--ink); border: 3px solid var(--bg); box-shadow: 0 0 0 1px var(--line-2); }
.pr-range input::-moz-range-thumb { width: 10px; height: 10px; border-radius: 50%; background: var(--ink); border: 3px solid var(--bg); }
.pareto { position: relative; height: 300px; margin-top: var(--sp3); }
.pareto svg { display: block; width: 100%; height: 100%; overflow: visible; }
.pareto .ax text { font: 400 10.5px var(--mono); fill: var(--muted); }
.pareto .gl { stroke: var(--line); }
.pareto .bar { fill: var(--s2); transition: fill .4s, opacity .4s; }
.pareto .bar.keep { fill: var(--accent); }
.pareto .cum { fill: none; stroke: var(--ink-2); stroke-width: 1.4; }
.pareto .dot { fill: var(--bg-2); stroke: var(--ink); stroke-width: 1.5; }
.pareto .dot.keep { stroke: var(--accent); fill: var(--accent); }
.pareto .ref { stroke: var(--accent); stroke-dasharray: 3 4; opacity: .7; }
.pareto .lab { font: 500 11px var(--mono); fill: var(--ink); }
.dec { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp5); }
.dec-k { margin: 0; font: 500 10.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.dec-f, .dec-d { margin: 14px 0 0; font-size: 22px; line-height: 1.38; letter-spacing: -.025em; text-wrap: pretty; }
.dec-f { color: var(--ink-2); }
.dec-me { margin: var(--sp5) 0 0; padding: 14px 18px; border-radius: var(--r-md); background: color-mix(in srgb, var(--accent) 8%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); font-size: 14.5px; line-height: 1.6; color: var(--ink-2); }

/* learned, next */
.learned { list-style: none; margin: var(--sp5) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line-2); }
.learned li { padding: 22px 24px 0 0; margin-right: 24px; border-right: 1px solid var(--line); }
.learned li:last-child { border-right: 0; margin-right: 0; }
.learned h3 { margin: 0; font-size: 19px; font-weight: 500; letter-spacing: -.02em; line-height: 1.25; }
.learned p { margin: 12px 0 0; font-size: 14.5px; line-height: 1.62; color: var(--ink-2); font-weight: 300; }

/* the loop inside the shared stage */
.eco-stage { padding-bottom: 22px; }
.eco-head { max-width: none; padding: 26px 30px 0; }
.eco-head h2 { margin: 12px 0 0; max-width: 30ch; font: 400 clamp(24px, 2.4vw, 32px)/1.12 var(--sans); letter-spacing: -.03em; color: var(--ink); text-wrap: balance; }
.eco-stage .flow-svg { max-width: 1060px; margin: 0 auto; }
.eco-stage .flow-cap { max-width: 1060px; margin-left: auto; margin-right: auto; }
.eco-hud { max-width: 1060px; margin: 0 auto; padding: 4px 30px 0; }
.eco-stage .fn rect.box { fill: rgba(13, 17, 26, .85); }
.eco-stage .fn:hover rect.box, .eco-stage .fn:focus-visible rect.box, .eco-stage .fn.on rect.box { fill: rgba(22, 30, 54, .92); }

@media (max-width: 860px) {
  .cons, .learned { grid-template-columns: 1fr; }
  .cons li, .learned li { border-right: 0; margin-right: 0; padding: 18px 0; border-bottom: 1px solid var(--line); }
  .built { grid-template-columns: 1fr; }
  .flow { padding: var(--sp2) 22px 0; }
  .eco-head { padding: 22px 22px 0; }
  .eco-hud { display: none; }
  .flow-svg, .flow-cap { display: none; }
  .flow-list { display: block; }
  .tabs { overflow-x: auto; scrollbar-width: none; }
  .tabs button { padding: 10px 14px; white-space: nowrap; }
  .pane { padding: var(--sp3) var(--sp2) var(--sp2); }
  .pq b { font-size: 17px; }
  .sqlbox { font-size: 12px; padding: 16px; }
  .pr-read b { font-size: 46px; }
  .pareto { height: 240px; }
  .dec { grid-template-columns: 1fr; gap: var(--sp3); }
  .dec-f, .dec-d { font-size: 19px; }
}

/* v16 polish */
.pq.pat { margin-top: var(--sp2); font-size: 12px; color: var(--ink-2); }
.dec-me a { display: inline-block; margin-top: 8px; color: var(--ink); font-weight: 500; text-underline-offset: 4px; }
.dec-me a:hover { color: var(--accent); }

/* phones: the loop as a vertical event rail (kit vocabulary), ending back at the start */
@media (max-width: 860px) {
  .eco-stage .flow-list { position: relative; margin: var(--sp2) 0 0 6px; padding: 0 0 0 22px; border-left: 1px solid var(--line-2); }
  .eco-stage .flow-list li { position: relative; border-top: 0; padding: 0 0 18px; }
  .eco-stage .flow-list li::before { content: ""; position: absolute; left: -26.5px; top: 6px; width: 7px; height: 7px; border-radius: 50%; background: var(--bg-2); border: 1px solid var(--accent); }
  .eco-stage .flow-list li:last-child::after { content: "The answer starts the next round"; display: block; margin-top: 14px; font: 500 10px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
  .eco-stage .flow-list b { margin-bottom: 4px; }
}