/* Upinion Platform Review 2026 — deck styles
   Brand: company/brand/brand-guide.md (proposed 2026-05-21) */

:root{
  --teal:#1A6B6B;
  --teal-deep:#0F4444;
  --teal-ink:#0A2E2E;
  --offwhite:#F5F5F0;
  --ink:#1C1C1C;
  --orange:#E07B39;
  --sand:#D9C9A8;
  --grey:#6B7280;
  --grey-line:#D8D8D0;
  --rule:rgba(28,28,28,.12);
  --sans:"IBM Plex Sans","Segoe UI",system-ui,-apple-system,sans-serif;
  --serif:"IBM Plex Serif",Georgia,serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --pad:clamp(1.5rem,4vw,5rem);
  --maxw:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--offwhite);color:var(--ink);
  font-family:var(--sans);font-size:clamp(15px,1.05vw,18px);line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

/* ---------- deck mechanics ---------- */
.deck{scroll-snap-type:y mandatory;height:100vh;overflow-y:scroll;overflow-x:hidden}
.slide{
  scroll-snap-align:start;scroll-snap-stop:always;
  min-height:100vh;padding:var(--pad);
  display:flex;flex-direction:column;justify-content:center;
  position:relative;border-bottom:1px solid var(--rule);
}
.slide>.inner{width:100%;max-width:var(--maxw);margin:0 auto}
.slide.dark{background:var(--teal-deep);color:var(--offwhite);border-bottom-color:rgba(255,255,255,.12)}
.slide.dark .lede{color:rgba(245,245,240,.82)}
.slide.tint{background:#EDEEE8}

/* dense slides: tighten the vertical rhythm so content fits one viewport */
.slide.dense{font-size:.94em}
.slide.dense h2{margin-bottom:.7rem}
.slide.dense .card{padding:clamp(.8rem,1.3vw,1.1rem)}
.slide.dense .grid{gap:clamp(.7rem,1.4vw,1.1rem)}
.slide.dense .stack>*+*{margin-top:.7rem}
.slide.dense .callout{margin:.9rem 0 0;padding:.8rem 1rem}
.slide.dense .src{margin-top:.8rem}
.slide.dense .lede{margin-bottom:.7rem}
.slide.dense p{margin-bottom:.7rem}
@media (min-height:1000px){.slide.dense{font-size:1em}}

/* slide furniture */
.num{
  position:absolute;right:var(--pad);bottom:calc(var(--pad) * .55);
  font:500 .72rem/1 var(--mono);letter-spacing:.14em;color:var(--grey);
}
.dark .num{color:rgba(245,245,240,.5)}
.kicker{
  font:600 .72rem/1 var(--sans);letter-spacing:.2em;text-transform:uppercase;
  color:var(--orange);margin:0 0 1.1rem;
}
.dark .kicker{color:var(--sand)}

/* ---------- type ---------- */
h1{font-size:clamp(2.4rem,5.6vw,4.6rem);line-height:1.04;font-weight:700;letter-spacing:-.025em;margin:0 0 1.2rem}
h2{font-size:clamp(1.7rem,3.3vw,2.7rem);line-height:1.12;font-weight:600;letter-spacing:-.02em;margin:0 0 1rem;max-width:22ch}
h2.wide{max-width:34ch}
h3{font-size:clamp(1rem,1.5vw,1.2rem);font-weight:600;margin:0 0 .5rem;letter-spacing:-.005em}
p{margin:0 0 1rem;max-width:70ch}
.lede{font-size:clamp(1.02rem,1.5vw,1.28rem);line-height:1.5;color:#3A3A3A;max-width:62ch}
strong{font-weight:600}
em.q{font-family:var(--serif);font-style:italic}
a{color:var(--teal);text-decoration-thickness:1px;text-underline-offset:2px}
.dark a{color:var(--sand)}

/* ---------- layout helpers ---------- */
.grid{display:grid;gap:clamp(1rem,2vw,1.8rem)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(1.5rem,3.5vw,3.5rem);align-items:center}
.split.top{align-items:start}
.stack>*+*{margin-top:.9rem}

/* ---------- components ---------- */
.card{background:#fff;border:1px solid var(--grey-line);border-radius:3px;padding:clamp(1rem,1.7vw,1.5rem)}
.dark .card{background:rgba(255,255,255,.055);border-color:rgba(255,255,255,.16)}
.card.accent{border-left:3px solid var(--orange)}
.card.good{border-left:3px solid var(--teal)}

.stat{font:700 clamp(2rem,4.6vw,3.5rem)/1 var(--sans);letter-spacing:-.035em;color:var(--teal);display:block;margin-bottom:.35rem}
.dark .stat{color:var(--sand)}
.stat.warn{color:var(--orange)}
.stat-label{font-size:.85rem;color:var(--grey);line-height:1.4;display:block}
.dark .stat-label{color:rgba(245,245,240,.72)}

.callout{border-left:3px solid var(--orange);background:rgba(224,123,57,.09);padding:1rem 1.2rem;margin:1.2rem 0;max-width:72ch}
.dark .callout{background:rgba(224,123,57,.15)}
.callout p:last-child{margin-bottom:0}

blockquote{margin:1.4rem 0;padding-left:1.1rem;border-left:3px solid var(--orange);
  font-family:var(--serif);font-style:italic;font-size:clamp(1.05rem,1.7vw,1.35rem);line-height:1.45;color:var(--teal);max-width:56ch}
.dark blockquote{color:var(--sand)}

ul.ticks{list-style:none;padding:0;margin:0}
ul.ticks li{position:relative;padding-left:1.4rem;margin-bottom:.6rem;max-width:64ch}
ul.ticks li::before{content:"";position:absolute;left:0;top:.62em;width:.5rem;height:.5rem;background:var(--orange);border-radius:50%}
ul.ticks li.no::before{background:var(--grey)}
ul.ticks li.yes::before{background:var(--teal)}
.dark ul.ticks li.yes::before{background:var(--sand)}

table{width:100%;border-collapse:collapse;font-size:.88rem;margin:.5rem 0 0}
th,td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid var(--rule);vertical-align:top}
.dark th,.dark td{border-bottom-color:rgba(255,255,255,.14)}
th{font-weight:600;font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--grey)}
.dark th{color:rgba(245,245,240,.62)}
td.n{font-family:var(--mono);font-size:.82rem;white-space:nowrap}
tr.hi td{background:rgba(224,123,57,.1)}

.tag{display:inline-block;font:600 .68rem/1 var(--sans);letter-spacing:.09em;text-transform:uppercase;
  padding:.35rem .55rem;border-radius:2px;background:var(--sand);color:var(--teal-ink);white-space:nowrap}
.tag.warn{background:var(--orange);color:#fff}
.tag.cool{background:var(--teal);color:#fff}
.tag.ghost{background:transparent;border:1px solid var(--grey-line);color:var(--grey)}
.dark .tag.ghost{border-color:rgba(255,255,255,.28);color:rgba(245,245,240,.75)}

.opt-head{display:flex;align-items:baseline;gap:.9rem;flex-wrap:wrap;margin-bottom:.3rem}
.opt-letter{font:700 clamp(2.2rem,4vw,3.2rem)/1 var(--sans);color:var(--orange);letter-spacing:-.04em}

figure{margin:0}
figcaption{font-size:.76rem;color:var(--grey);margin-top:.6rem;line-height:1.45;max-width:64ch}
.dark figcaption{color:rgba(245,245,240,.62)}
svg{max-width:100%;height:auto;display:block}

.src{font-size:.72rem;color:var(--grey);line-height:1.5;margin-top:1.2rem;max-width:74ch}
.dark .src{color:rgba(245,245,240,.55)}

/* progress + nav */
.progress{position:fixed;top:0;left:0;height:3px;background:var(--orange);width:0;z-index:50;transition:width .12s linear}
.hint{position:fixed;right:1rem;bottom:1rem;z-index:40;font:500 .7rem/1 var(--mono);letter-spacing:.1em;
  color:var(--grey);background:rgba(245,245,240,.9);border:1px solid var(--grey-line);
  padding:.5rem .7rem;border-radius:2px;transition:opacity .4s}
.hint.gone{opacity:0;pointer-events:none}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:1.5rem}
  .slide{min-height:auto;padding-top:3.5rem;padding-bottom:4rem}
  .deck{scroll-snap-type:none}
  h2{max-width:none}
}
@media (max-width:620px){
  .g2{grid-template-columns:1fr}
  .scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .scroll-x table{min-width:520px}
}

/* ---------- print ---------- */
@media print{
  .deck{height:auto;overflow:visible;scroll-snap-type:none}
  .slide{min-height:auto;page-break-after:always;break-after:page;border:none;padding:1.5cm}
  .progress,.hint{display:none}
  .slide.dark{background:#0F4444 !important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  body{font-size:10pt}
}