/* kaizen-lab.io — Kaizen Lab brand (Zenilify-Consulting brand kit 94d9337):
   LED-dot plate #0D0D0D, dot off #202022, gradient orange #F8A42F -> purple #6A4CA0 -> navy #2D3A78.
   PDCA colours: Plan orange, Do mauve, Check purple, Act navy. */
:root {
  --orange: #F8A42F; --mauve: #A86F78; --purple: #6A4CA0; --navy: #2D3A78;
  --bg: #F6F5F2; --dot: #E2E0DA; --surface: #FFFFFF; --surface-2: #EFEDE8;
  --text: #17171A; --muted: #5C5C66; --line: #D9D6CF;
  --accent: #B8650A;            /* orange darkened for AA text on light */
  --plan: #B8650A; --do: #8A4F5A; --check: #5A3D92; --act: #2D3A78;
  --ok: #2F7D4F; --warn: #A15C00; --bad: #B0303A;
  --radius: 14px; --maxw: 1080px;
  --font: ui-sans-serif, -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0D0D0D; --dot: #202022; --surface: #151517; --surface-2: #1C1C1F;
    --text: #F0F0F0; --muted: #9A9AA2; --line: #2A2A2E;
    --accent: #F8A42F; --plan: #F8A42F; --do: #C98A92; --check: #9C82D6; --act: #7F8FE0;
    --ok: #5CC58A; --warn: #F8A42F; --bad: #F06A72;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0D0D0D; --dot: #202022; --surface: #151517; --surface-2: #1C1C1F;
  --text: #F0F0F0; --muted: #9A9AA2; --line: #2A2A2E;
  --accent: #F8A42F; --plan: #F8A42F; --do: #C98A92; --check: #9C82D6; --act: #7F8FE0;
  --ok: #5CC58A; --warn: #F8A42F; --bad: #F06A72;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font); color: var(--text); line-height: 1.55;
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot) 1.3px, transparent 1.4px);
  background-size: 18px 18px;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px;
}
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 16px; top: 8px; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(6px); position: sticky; top: 0; z-index: 5; }
.site-head .wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand img { height: 22px; width: auto; display: block; }
.brand .io { font-family: var(--mono); font-size: 13px; color: var(--muted); }
nav.main { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a { text-decoration: none; color: var(--muted); padding: 6px 10px; border-radius: 8px; font-size: 15px; }
nav.main a:hover { color: var(--text); background: var(--surface-2); }
nav.main a[aria-current="page"] { color: var(--text); background: var(--surface-2); font-weight: 600; }
.theme-btn { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 8px; padding: 5px 9px; cursor: pointer; font: inherit; font-size: 14px; }

/* type + sections */
main { padding: 32px 0 64px; }
h1 { font-size: clamp(30px, 6vw, 52px); line-height: 1.08; letter-spacing: -0.02em; margin: 8px 0 16px; }
h2 { font-size: clamp(22px, 3.4vw, 30px); letter-spacing: -0.01em; margin: 48px 0 12px; }
h3 { font-size: 18px; margin: 0 0 6px; }
.lede { font-size: clamp(17px, 2.4vw, 21px); color: var(--muted); max-width: 46em; }
.eyebrow { font-family: var(--mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.grad { background: linear-gradient(90deg, var(--orange), var(--purple) 60%, var(--navy)); -webkit-background-clip: text; background-clip: text; color: transparent; }
:root[data-theme="dark"] .grad, :root:not([data-theme="light"]) .grad { background: linear-gradient(90deg, var(--orange), #9C82D6 60%, #7F8FE0); -webkit-background-clip: text; background-clip: text; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .grad { background: linear-gradient(90deg, #C9720C, var(--purple) 60%, var(--navy)); -webkit-background-clip: text; background-clip: text; } }
:root[data-theme="light"] .grad { background: linear-gradient(90deg, #C9720C, var(--purple) 60%, var(--navy)); -webkit-background-clip: text; background-clip: text; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.grid { display: grid; gap: 16px; }
@media (min-width: 640px) { .grid.two { grid-template-columns: repeat(2, 1fr); } .grid.three { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .grid.four { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 640px) and (max-width: 899px) { .grid.four { grid-template-columns: repeat(2, 1fr); } }

/* I/O steps */
.steps { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; border-top: 4px solid var(--c, var(--accent)); }
.steps .k { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--c, var(--accent)); }
.steps p { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

/* SIPOC */
.sipoc-wrap { margin-top: 16px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.sipoc { width: 100%; min-width: 0; height: auto; display: block; }
.sipoc .col-title { font: 700 13px var(--mono); letter-spacing: .08em; fill: var(--muted); text-transform: uppercase; }
.sipoc .box { fill: var(--surface); stroke: var(--line); }
.sipoc .item { font: 14px var(--font); fill: var(--text); }
.sipoc .num { font: 700 13px var(--mono); fill: var(--accent); }
.sipoc .arrow { stroke: var(--muted); stroke-width: 2; fill: none; }
.sipoc .arrowhead { fill: var(--muted); }
.sipoc-list { display: none; }
@media (max-width: 640px) {
  .sipoc-wrap.stackable .sipoc { display: none; }
  .sipoc-wrap.stackable .sipoc-list { display: grid; gap: 10px; }
}
.sipoc-list section { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--c); border-radius: 10px; padding: 12px 14px; }
.sipoc-list h3 { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--c); margin: 0 0 4px; }
.sipoc-list ul { margin: 0; padding-left: 18px; }
.sipoc-list .num { font-family: var(--mono); color: var(--accent); font-weight: 700; }
.sipoc-list .down { text-align: center; color: var(--muted); font-size: 18px; line-height: 1; }

/* KPI tiles */
.tile { display: flex; flex-direction: column; gap: 6px; min-height: 220px; }
.tile .label { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.tile .value { font-size: clamp(32px, 5vw, 42px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.tile .unit { font-size: 16px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.tile .sub { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.tile .target { font-size: 14px; display: flex; align-items: center; gap: 6px; }
.tile .spark { margin-top: 6px; height: 48px; width: 100%; }
.tile .spark .bar { fill: var(--accent); opacity: .85; }
.tile .spark .line { stroke: var(--accent); stroke-width: 2; fill: none; }
.tile .spark .tgt { stroke: var(--muted); stroke-dasharray: 3 3; stroke-width: 1; }
.tile .spark .empty { fill: var(--muted); font: 11px var(--mono); }
.pill { display: inline-block; white-space: nowrap; border-radius: 999px; padding: 1px 9px; font-size: 12px; font-weight: 600; border: 1px solid currentColor; }
.pill.ok { color: var(--ok); } .pill.warn { color: var(--warn); } .pill.bad { color: var(--bad); } .pill.na { color: var(--muted); }
.status-line { font-family: var(--mono); font-size: 13px; color: var(--muted); margin: 8px 0 20px; }
.status-line .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); margin-right: 6px; vertical-align: middle; }
.status-line .dot.live { background: var(--ok); } .status-line .dot.stale { background: var(--warn); }
.pdca-chip { font-family: var(--mono); font-size: 11px; padding: 1px 6px; border-radius: 4px; background: var(--surface-2); color: var(--muted); }

/* forms / calculators */
.calc { display: grid; gap: 20px; }
@media (min-width: 800px) { .calc { grid-template-columns: 1.1fr 1fr; align-items: start; } }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 0 0 16px; background: var(--surface); }
legend { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); padding: 0 6px; }
.field { display: grid; gap: 4px; margin-bottom: 12px; }
.field label { font-weight: 600; font-size: 15px; }
.field .hint { color: var(--muted); font-size: 13px; }
input[type="number"], select {
  font: inherit; font-size: 16px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--text); width: 100%;
}
.result { position: sticky; top: 76px; }
.result .big { font-size: clamp(40px, 8vw, 64px); font-weight: 800; letter-spacing: -0.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.bars { display: grid; gap: 10px; margin: 16px 0; }
.bar-row { display: grid; grid-template-columns: 110px 1fr 56px; gap: 10px; align-items: center; font-size: 14px; }
.bar-row .track { height: 12px; background: var(--surface-2); border-radius: 6px; overflow: hidden; }
.bar-row .fill { height: 100%; background: var(--c, var(--accent)); width: 0; transition: width .25s ease; }
.bar-row .pct { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.note { color: var(--muted); font-size: 14px; }
.err { color: var(--bad); font-size: 14px; min-height: 1.2em; }

/* CTA */
.cta { margin-top: 32px; border-radius: var(--radius); padding: 22px; border: 1px solid var(--line);
  background: linear-gradient(120deg, color-mix(in srgb, var(--orange) 16%, var(--surface)), color-mix(in srgb, var(--purple) 14%, var(--surface)) 60%, color-mix(in srgb, var(--navy) 16%, var(--surface))); }
.cta h2 { margin: 0 0 6px; font-size: 22px; }
.btn { display: inline-block; margin-top: 10px; padding: 11px 18px; border-radius: 10px; background: var(--text); color: var(--bg); text-decoration: none; font-weight: 700; }
.btn:hover { opacity: .9; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); margin-left: 8px; }

/* footer */
.site-foot { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 14px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-foot a { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
table.plain { width: 100%; border-collapse: collapse; font-size: 14px; }
table.plain th, table.plain td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
table.plain td.n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media (max-width: 640px) {
  .site-head { position: static; }
  .site-head .wrap { gap: 6px 12px; padding-top: 8px; padding-bottom: 6px; }
  .theme-btn { margin-left: auto; font-size: 12px; padding: 3px 7px; }
  nav.main { order: 3; margin-left: -10px; width: calc(100% + 10px); }
  .result { position: static; }
}