/* ============================================================
   Evaporize Sales Knowledge - shared design system.
   Matches the SALES KIT DNA (not Apple): Inter-300 body, Plus Jakarta
   Sans light headings, the kit's grey grid background, frosted-glass
   cards, kit colour tokens. One stylesheet, every Learn piece links it.
   Both fonts are already loaded by the kit - no new fonts added.
   ============================================================ */
:root{
  --bg-base:#d9dce3;
  --bg-highlight:#eef0f4;
  --bg-shadow:#b5b9c2;
  --grid-line:rgba(0,0,0,0.035);

  --ink:rgba(20,20,25,0.9);    /* text-primary */
  --ink-2:rgba(20,20,25,0.7);  /* text-secondary */
  /* WCAG FIX (17 Aug): was 0.55 - measured 4.03:1 on the frosted card, below
     the 4.5:1 floor. 0.62 measures 4.51:1+ against both the plain page and
     the card. See ACCESSIBILITY GUARDRAILS - contrast (17 Aug).md. */
  --ink-3:rgba(20,20,25,0.62); /* muted */
  --line:rgba(20,20,25,0.08);
  --line-2:rgba(20,20,25,0.14);

  --bg:rgba(255,255,255,0.60);    /* frosted card panel */
  --bg-2:transparent;             /* bands off - one continuous kit bg */

  --glass-shadow:0 10px 30px -10px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.55);
  --glass-border:rgba(255,255,255,0.5);

  --accent:#2f6bd6;
  --good:#059669;                 /* kit status-registered - FILL ROLE ONLY, see below */
  --bad:#E31837;                  /* kit status-pending - FILL ROLE ONLY, see below */
  --front:#2f6bd6;                /* meaning colours (public / read) - FILL ROLE ONLY */
  --back:#6a4bd0;                 /* meaning colours (private / do)  - FILL ROLE ONLY */
  /* WCAG FIX (17 Aug): --front/--back/--good/--accent above are the SOLID-FILL
     colour (chip backgrounds, dots) - they intentionally stay saturated and
     identical across themes, because that pairing (fill + white overlay text)
     already passed and must not be disturbed.
     But those SAME hexes were also being read as foreground TEXT colour
     directly on the page/card (links, labels, headings) in both themes, and
     as plain text-on-background that pairing measured as low as 2.66:1 -
     nowhere near the 4.5:1 floor. One value cannot satisfy both roles in
     both themes at once, so the roles are split. Every `color:` (not
     `background:`) usage below now points at these instead. Dark-mode
     overrides live in TopicPage.svelte, scoped to .topic-doc, matching the
     existing token-override pattern - knowledge.css itself stays theme-
     agnostic light-mode values only, as it always has.
     Numbers: see ACCESSIBILITY GUARDRAILS - contrast (17 Aug).md. */
  /* CORRECTED 17 Aug (B's chair): the 17 Aug values above were verified against a
     HAND-COMPOSITED approximation of the page/card background, not a real rendered
     pixel. Real Playwright pixel sampling across 15+ live contexts on 5 guide pages
     found BOTH tokens still failing where a card carries its own colour tint
     (.col.a/.col.b's rgba(front/back,0.05) wash) - front-text measured as low as
     3.65:1 (page) / 3.73:1 (.col.a .lab, real pixel), back-text as low as 2.02:1 on
     .col.b .lab. "Verified against composited backgrounds" was true of the backgrounds
     I HAND-CALCULATED, not the ones that actually render. Re-tuned against REAL
     sampled pixels this time - every value below is a measured minimum, not computed. */
  --front-text:#2357b3;           /* was #2f6bd6 (3.65-4.47:1 FAIL on real pixels) -> 4.96:1+ min across 15 real contexts */
  --back-text:#29195f;            /* was #6a4bd0 (2.02:1 FAIL on .col.b .lab, real pixel) -> 5.10:1 min */
  --good-text:#047d58;            /* was #059669 (3.45:1 FAIL) -> 4.70:1, re-confirmed via real pixel on .fitcard.yes h4: 5.01:1 */

  --sans:'Inter',sans-serif;
  --head:'Plus Jakarta Sans','Inter',sans-serif;
  --r:24px;
  --page:1400px;
  --read:960px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  /* WCAG FIX (17 Aug): was font-weight:300. This is a SECOND, SEPARATE body
     rule from app.css's own (also just fixed to 400) - this one loads via
     TopicPage.svelte's <link rel="stylesheet"> and, on /learn/[slug] pages,
     WINS on source order over app.css's body rule despite equal
     specificity, since it is injected later in <head>. Every block
     component (JargonBlock, MixupsBlock, etc.) that reads ink-2/ink-3
     without its own explicit weight was STILL rendering at 300 through
     this rule alone, even after the app.css fix - the colour-token split
     fixed contrast on these guide pages; this fixes weight, the other half
     of the same complaint. Numbers: ACCESSIBILITY GUARDRAILS - contrast
     (17 Aug).md. */
  font-family:var(--sans);font-weight:400;letter-spacing:-0.01em;color:var(--ink);
  line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  background-color:var(--bg-base);
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px),
    radial-gradient(circle at 30% 0%, var(--bg-highlight) 0%, transparent 60%),
    radial-gradient(circle at 80% 100%, var(--bg-shadow) 0%, transparent 70%);
  background-size:120px 120px,120px 120px,100% 100%,100% 100%;
  background-attachment:fixed;
}
.wrap{max-width:var(--page);margin:0 auto;padding:0 1.5rem}
.wide{max-width:var(--page)}
.eyebrow{font-size:0.75rem;font-weight:500;letter-spacing:0.08em;text-transform:uppercase;color:var(--ink-2)}
.accent-front{color:var(--front-text)} .accent-back{color:var(--back-text)}

/* shared frosted-glass card */
.card-glass{
  background:var(--bg);
  -webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);
  box-shadow:var(--glass-shadow);
}

/* hero */
.hero{padding:clamp(60px,10vw,116px) 0 clamp(40px,6vw,72px);text-align:center}
.hero .eyebrow{margin-bottom:20px;display:block}
h1{font-family:var(--head);font-size:clamp(2rem,4.6vw,3.2rem);font-weight:200;line-height:1.06;letter-spacing:-0.035em;color:var(--ink)}
.hero p{font-size:clamp(0.95rem,1.6vw,1.15rem);font-weight:400;color:var(--ink-2);max-width:42ch;margin:18px auto 0;line-height:1.5;letter-spacing:-0.01em}

/* section rhythm */
section{padding:clamp(46px,7vw,92px) 0}
.band{background:transparent}
.shead{max-width:680px;margin-bottom:clamp(30px,4vw,52px)}
.shead.center{margin-left:auto;margin-right:auto;text-align:center}
.shead .eyebrow{margin-bottom:14px;display:block}
h2{font-family:var(--head);font-size:clamp(1.55rem,3vw,2.15rem);font-weight:300;line-height:1.12;letter-spacing:-0.03em;color:var(--ink)}
.shead p{font-size:clamp(0.95rem,1.5vw,1.1rem);font-weight:400;color:var(--ink-2);margin-top:14px;line-height:1.55}
.shead p b{color:var(--ink);font-weight:500}

/* one-sentence statement */
.statement{font-family:var(--head);font-size:clamp(1.35rem,2.8vw,2.05rem);font-weight:300;line-height:1.28;letter-spacing:-0.025em;max-width:26ch;color:var(--ink)}
.statement .f{color:var(--front-text)} .statement .b{color:var(--back-text)}

/* two-column split */
.split2{display:grid;grid-template-columns:1fr 1fr;gap:0;border-radius:var(--r);overflow:hidden;max-width:1200px;
  background:var(--bg);-webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);box-shadow:var(--glass-shadow)}
.col{padding:clamp(26px,3vw,44px)}
.col.a{background:rgba(47,107,214,0.05)} .col.b{background:rgba(106,75,208,0.05)}
.col + .col{border-left:1px solid var(--line)}
.col .lab{font-size:0.75rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.col.a .lab{color:var(--front-text)} .col.b .lab{color:var(--back-text)}
.col .lab .dot{width:9px;height:9px;border-radius:50%}
.col.a .lab .dot{background:var(--front)} .col.b .lab .dot{background:var(--back)}
.col h3{font-family:var(--head);font-size:clamp(1.2rem,2vw,1.5rem);font-weight:500;letter-spacing:-0.02em;margin-bottom:6px;color:var(--ink)}
.col .plain{color:var(--ink-3);font-size:1.02rem;margin-bottom:20px}
.col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.col li{display:flex;gap:11px;font-size:1rem;color:var(--ink-2);line-height:1.45}
.col li svg{width:18px;height:18px;flex:none;margin-top:2px;color:var(--ink-3)}
.join{margin-top:26px;font-size:1.05rem;color:var(--ink-2);max-width:62ch}
@media(max-width:680px){.split2{grid-template-columns:1fr}.col + .col{border-left:none;border-top:1px solid var(--line)}}

/* feature grid (text blocks, no card) */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:clamp(26px,3vw,48px)}
.feat svg{width:30px;height:30px;color:var(--ink);margin-bottom:16px;stroke-width:1.5}
.feat h4{font-family:var(--head);font-size:1.2rem;font-weight:500;letter-spacing:-0.015em;margin-bottom:6px;color:var(--ink)}
.feat p{color:var(--ink-2);font-size:1.02rem;line-height:1.5;max-width:34ch}

/* fit / not-fit (glass cards) */
.fit{display:grid;grid-template-columns:1fr 1fr;gap:clamp(16px,2vw,24px);max-width:1200px}
@media(max-width:700px){.fit{grid-template-columns:1fr}}
.fitcard{border-radius:var(--r);padding:clamp(24px,3vw,38px);
  background:var(--bg);-webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);box-shadow:var(--glass-shadow)}
.fitcard.no{background:rgba(255,255,255,0.4)}
.fitcard h4{font-family:var(--head);font-size:1.15rem;font-weight:500;letter-spacing:-0.01em;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.fitcard.yes h4{color:var(--good-text)} .fitcard.no h4{color:var(--ink-2)}
.fitcard ul{list-style:none;display:flex;flex-direction:column;gap:15px}
.fitcard li{font-size:1.02rem;color:var(--ink-2);line-height:1.45;display:flex;gap:11px}
.fitcard li b{color:var(--ink);font-weight:600}
.fitcard li svg{width:18px;height:18px;flex:none;margin-top:3px;stroke-width:1.8}
.fitcard.yes li svg{color:var(--good-text)} .fitcard.no li svg{color:var(--ink-3)}
.redir{color:var(--front-text);font-weight:500;white-space:nowrap}

/* Q&A accordion */
.qa{border-top:1px solid var(--line);max-width:var(--read)}
.qrow{border-bottom:1px solid var(--line)}
.qrow .q{width:100%;background:none;border:none;font-family:inherit;text-align:left;cursor:pointer;
  padding:24px 44px 24px 0;font-size:clamp(1.05rem,1.9vw,1.3rem);font-weight:400;color:var(--ink);
  letter-spacing:-0.01em;position:relative;line-height:1.35}
.qrow .q::after{content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);font-size:1.6rem;font-weight:200;color:var(--ink-3)}
.qrow.open .q::after{content:"\2013"}
.qrow .a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.qrow.open .a{max-height:360px}
.qrow .a p{padding:0 44px 26px 0;color:var(--ink-2);font-size:1.08rem;font-weight:400;line-height:1.6}
.qrow .a b{color:var(--ink);font-weight:600}

/* complexity ladder */
.ladder{display:flex;flex-direction:column;max-width:var(--read)}
.rung{display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line)}
.rung:first-child{border-top:1px solid var(--line)}
.rung .num{font-size:1rem;color:var(--ink-3);font-variant-numeric:tabular-nums;font-weight:400}
.rung .rname{font-family:var(--head);font-size:1.25rem;font-weight:500;letter-spacing:-0.015em;color:var(--ink)}
.rung .rname small{display:block;font-family:var(--sans);font-weight:400;font-size:0.98rem;color:var(--ink-3);letter-spacing:-0.005em;margin-top:2px}
.rung .bar{width:clamp(90px,22vw,260px);height:6px;background:rgba(20,20,25,0.1);border-radius:4px;overflow:hidden}
.rung .bar i{display:block;height:100%;background:var(--ink-3);border-radius:4px}
.rung.hl .rname{color:var(--front-text)}
.rung.hl .bar i{background:var(--accent)}
.ladder-note{margin-top:24px;color:var(--ink-2);font-size:1.05rem;max-width:56ch}
@media(max-width:540px){.rung{grid-template-columns:auto 1fr}.rung .bar{display:none}}

/* examples (glass cards) */
.egs{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:clamp(16px,2vw,24px)}
.eg{border-radius:var(--r);padding:clamp(24px,3vw,34px);
  background:var(--bg);-webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);box-shadow:var(--glass-shadow)}
.eg h4{font-family:var(--head);font-size:1.25rem;font-weight:500;letter-spacing:-0.015em;margin-bottom:8px;color:var(--ink)}
.eg p{color:var(--ink-2);font-size:1.02rem;line-height:1.5;margin-bottom:18px}
.eg .rows{display:flex;flex-direction:column;gap:9px}
.eg .r{display:flex;gap:10px;align-items:baseline;font-size:0.98rem}
.eg .r .k{font-size:0.68rem;font-weight:600;letter-spacing:0.04em;text-transform:uppercase;flex:none;width:64px}
.eg .r.f .k{color:var(--front-text)} .eg .r.b .k{color:var(--back-text)}
.eg .r span{color:var(--ink-2)}

/* connects grid (glass cards) */
.connect{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:clamp(14px,1.6vw,22px)}
.cn{border-radius:20px;padding:26px;
  background:var(--bg);-webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);box-shadow:var(--glass-shadow)}
.cn.hl{background:rgba(20,20,25,0.88);-webkit-backdrop-filter:none;backdrop-filter:none;border-color:transparent}
.cn .t{font-size:0.68rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.cn.hl .t{color:rgba(255,255,255,0.6)}
.cn h4{font-family:var(--head);font-size:1.2rem;font-weight:500;letter-spacing:-0.015em;margin-bottom:6px;color:var(--ink)}
.cn.hl h4{color:#fff}
.cn p{font-size:0.96rem;color:var(--ink-2);line-height:1.45}
.cn.hl p{color:rgba(255,255,255,0.82)}

/* quiz (glass cards) */
.quiz{display:grid;gap:clamp(16px,2vw,20px);max-width:1100px}
.qc{border-radius:var(--r);padding:clamp(24px,3vw,36px);
  background:var(--bg);-webkit-backdrop-filter:blur(24px) saturate(1.3);backdrop-filter:blur(24px) saturate(1.3);
  border:0.5px solid var(--glass-border);box-shadow:var(--glass-shadow)}
.qc .n{font-size:0.75rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;color:var(--ink-3)}
.qc .t{font-family:var(--head);font-size:clamp(1.15rem,2.2vw,1.45rem);font-weight:400;letter-spacing:-0.015em;margin:8px 0 22px;line-height:1.3;color:var(--ink)}
.opts{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}
.opt{font-family:inherit;font-size:1rem;font-weight:400;padding:16px;border:1px solid var(--line-2);background:rgba(255,255,255,0.5);
  cursor:pointer;border-radius:14px;transition:border-color .15s,background .15s;color:var(--ink);text-align:left;min-height:54px}
.opt:hover:not(:disabled){border-color:var(--ink-3)}
.opt.correct{background:var(--good);border-color:var(--good);color:#fff}
.opt.wrong{background:var(--bad);border-color:var(--bad);color:#fff}
.opt:disabled{cursor:default}
.why{max-height:0;overflow:hidden;transition:max-height .3s;color:var(--ink-2);font-size:1.02rem;font-weight:400;line-height:1.6}
.qc.done .why{max-height:260px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.why b{color:var(--ink);font-weight:600}

footer{padding:clamp(44px,6vw,72px) 0;border-top:1px solid var(--line);color:var(--ink-3);font-size:0.9rem;font-weight:400;line-height:1.7}
footer b{color:var(--ink-2);font-weight:500}
footer .fl{font-family:var(--head);font-size:1.1rem;font-weight:500;color:var(--ink);letter-spacing:-0.01em;margin-bottom:12px}

/* download-to-PDF button */
.pdf-btn{position:fixed;top:20px;right:20px;z-index:60;font-family:var(--sans);font-size:0.85rem;font-weight:500;
  padding:10px 17px;border:0.5px solid var(--glass-border);border-radius:100px;background:rgba(255,255,255,0.55);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);color:var(--ink);cursor:pointer;
  box-shadow:0 4px 14px -6px rgba(0,0,0,.15);transition:background .15s}
.pdf-btn:hover{background:rgba(255,255,255,0.75)}
@media(max-width:640px){.pdf-btn{top:14px;right:14px;padding:8px 14px;font-size:0.8rem}}

@media print{
  body{background:#fff!important}
  .pdf-btn{display:none!important}
  .reveal{opacity:1!important;transform:none!important}
  .hero{padding:16px 0 24px!important}
  section{padding:26px 0!important}
  .split2,.fitcard,.eg,.cn,.qc{-webkit-backdrop-filter:none!important;backdrop-filter:none!important;background:#fff!important;border:1px solid var(--line)!important;box-shadow:none!important}
  .qrow .a{max-height:none!important}
  .why{max-height:none!important;margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}
  .qc.done .why,.qc .why{max-height:none!important}
  .opt[data-correct]{background:var(--good)!important;border-color:var(--good)!important;color:#fff!important}
  .cn.hl{background:#fff!important;color:var(--ink)!important}
  .cn.hl .t{color:var(--ink-3)!important}.cn.hl h4,.cn.hl p{color:var(--ink)!important}
  .feat,.fitcard,.eg,.qc,.rung,.cn,.split2,.qrow,.statement{break-inside:avoid}
  h1,h2{break-after:avoid}
  a[href]{color:inherit;text-decoration:none}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s cubic-bezier(.2,.6,.2,1),transform .7s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}