/* UFIT POC/Demo Hub — "Warm EdTech: ink on paper" design system.
   Self-contained: no external fonts/CDN. System serif+sans stacks. */

:root {
  --paper:      #F6F1E7;
  --paper-2:    #FDFBF6;
  --paper-3:    #EFE8D8;
  --ink:        #20242E;
  --ink-soft:   #4C515D;
  --ink-faint:  #8A8577;
  --line:       #E2DBCB;
  --amber:      #C97B2C;   /* UFIT lead accent */
  --amber-deep: #A75F16;
  --vw:         #B5532B;   /* VeriWright — terracotta */
  --we:         #2F5E8A;   /* secondary ink-blue accent */
  --ap:         #3E7D4F;   /* Aprendiz — forest */
  --shadow:     0 1px 2px rgba(32,36,46,.06), 0 8px 30px rgba(32,36,46,.07);
  --shadow-lift:0 2px 6px rgba(32,36,46,.10), 0 20px 50px rgba(32,36,46,.12);
  --serif: "Charter", "Iowan Old Style", "Palatino Linotype", Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --maxw: 1160px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  /* dot-grid nod to smart-dot paper + faint paper grain */
  background-image:
    radial-gradient(circle at 1px 1px, rgba(32,36,46,.055) 1px, transparent 0);
  background-size: 26px 26px;
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.12; letter-spacing: -.015em; color: var(--ink); }
h1 { font-size: clamp(2.4rem, 5.2vw, 4.1rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.28rem; }
p { margin: 0 0 1rem; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 5vw, 44px); }
.eyebrow {
  font-family: var(--sans); font-size: .72rem; font-weight: 700; letter-spacing: .22em;
  text-transform: uppercase; color: var(--amber-deep);
}
.lead { font-size: clamp(1.05rem, 1.8vw, 1.28rem); color: var(--ink-soft); max-width: 62ch; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: rgba(246,241,231,.82);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 22px; height: 66px; }
.brand { font-family: var(--serif); font-weight: 700; font-size: 1.32rem; letter-spacing: -.02em; text-decoration: none; }
.brand span { color: var(--amber); }
.brand small { font-family: var(--sans); font-weight: 600; font-size: .6rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--ink-faint); display: block; margin-top: -3px; }
.nav { margin-left: auto; display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.nav a { text-decoration: none; color: var(--ink-soft); font-size: .92rem; font-weight: 500;
  padding: 8px 12px; border-radius: 9px; transition: background .15s, color .15s; }
.nav a:hover { background: var(--paper-3); color: var(--ink); }
.nav a.cta { background: var(--ink); color: var(--paper-2); }
.nav a.cta:hover { background: var(--amber-deep); color: #fff; }

/* language switcher */
.langs { display: flex; gap: 2px; border: 1px solid var(--line); border-radius: 9px; padding: 3px; background: var(--paper-2); }
.langs a { padding: 4px 9px; font-size: .78rem; font-weight: 700; letter-spacing: .04em; border-radius: 6px;
  text-decoration: none; color: var(--ink-faint); }
.langs a.on, .langs a:hover { background: var(--amber); color: #fff; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 9px; font-family: var(--sans); font-weight: 600;
  font-size: .96rem; text-decoration: none; padding: 13px 22px; border-radius: 11px; border: 1px solid transparent;
  transition: transform .12s, box-shadow .15s, background .15s; cursor: pointer; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--paper-2); box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--amber-deep); color: #fff; box-shadow: var(--shadow-lift); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); background: var(--paper-2); }
.btn .arrow { transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- hero ---------- */
.hero { padding: clamp(56px, 9vw, 104px) 0 clamp(40px, 6vw, 72px); position: relative; }
.hero h1 { max-width: 16ch; margin: 14px 0 22px; }
.hero .ink-accent { color: var(--amber-deep); font-style: italic; }
.hero-cta { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

/* ---------- section ---------- */
.section { padding: clamp(48px, 7vw, 88px) 0; }
.section-head { max-width: 60ch; margin-bottom: 40px; }
.section-head h2 { margin: 10px 0 12px; }

/* ---------- product cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 860px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px 24px; text-decoration: none; color: inherit; position: relative; overflow: hidden;
  box-shadow: var(--shadow); transition: transform .18s, box-shadow .18s, border-color .18s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--accent, var(--amber)); }
.card .tag { font-size: .68rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent, var(--amber-deep)); }
.card h3 { font-size: 1.5rem; margin: 8px 0 8px; }
.card p { color: var(--ink-soft); font-size: .96rem; flex: 1; }
.card .go { margin-top: 14px; font-weight: 600; font-size: .9rem; color: var(--accent, var(--amber-deep)); }
.card.vw { --accent: var(--vw); } .card.we { --accent: var(--we); } .card.ap { --accent: var(--ap); }

/* ---------- feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 720px) { .features { grid-template-columns: 1fr; } }
.feature { background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px; padding: 22px 22px; }
.feature h3 { font-family: var(--sans); font-size: 1.05rem; font-weight: 700; margin: 0 0 6px; }
.feature p { color: var(--ink-soft); font-size: .93rem; margin: 0; }
.feature .n { font-family: var(--serif); font-size: 1.5rem; color: var(--accent, var(--amber)); display:block; margin-bottom:6px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; counter-reset: s; }
@media (max-width: 720px){ .steps{ grid-template-columns:1fr; } }
.step { position: relative; padding: 24px 22px; background: var(--paper-2); border:1px solid var(--line); border-radius:12px; }
.step::before { counter-increment: s; content: counter(s); font-family: var(--serif); font-size: 2rem; color: var(--accent,var(--amber)); font-weight:700; display:block; margin-bottom:6px; }

/* ---------- notice / gate / callout ---------- */
.notice { border-left: 3px solid var(--amber); background: var(--paper-2); padding: 16px 20px; border-radius: 0 10px 10px 0;
  font-size: .92rem; color: var(--ink-soft); }
.notice strong { color: var(--ink); }
.gate { border: 1px dashed var(--line); background: var(--paper-2); border-radius: 12px; padding: 22px 24px; }
.gate .lock { font-size: .72rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color: var(--ink-faint); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); margin-top: 40px; padding: 40px 0 60px; color: var(--ink-soft); font-size: .88rem; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; }
.foot a { color: var(--ink-soft); }
.foot .disc { max-width: 52ch; font-size: .8rem; color: var(--ink-faint); }

/* ---------- staggered reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); animation: rise .7s cubic-bezier(.2,.7,.2,1) forwards; }
@keyframes rise { to { opacity: 1; transform: none; } }
.d1{animation-delay:.05s}.d2{animation-delay:.15s}.d3{animation-delay:.25s}.d4{animation-delay:.35s}.d5{animation-delay:.45s}
@media (prefers-reduced-motion: reduce){ .reveal{animation:none;opacity:1;transform:none} html{scroll-behavior:auto} }

.badge-row { display:flex; gap:10px; flex-wrap:wrap; margin-top:22px; }
.badge { font-size:.78rem; color:var(--ink-soft); background:var(--paper-2); border:1px solid var(--line);
  padding:6px 12px; border-radius:999px; }

/* ================= scroll-driven entrance motion =================
   Every rule here is scoped to .js-anim, which assets/motion.js adds to <html> only when the
   browser can actually finish the animation. Without that class nothing is hidden, so a page
   with JS blocked or reduced-motion enabled renders complete. See assets/motion.js. */
.js-anim [data-anim] { opacity: 0; transform: translateY(18px);
  transition: opacity .72s cubic-bezier(.2,.7,.2,1), transform .72s cubic-bezier(.2,.7,.2,1); }
.js-anim [data-anim].in { opacity: 1; transform: none; }
.js-anim [data-anim][data-d="1"] { transition-delay: .07s; }
.js-anim [data-anim][data-d="2"] { transition-delay: .14s; }
.js-anim [data-anim][data-d="3"] { transition-delay: .21s; }
.js-anim [data-anim][data-d="4"] { transition-delay: .28s; }
.js-anim [data-anim][data-d="5"] { transition-delay: .35s; }

.js-anim .grow { width: 0 !important; transition: width 1.05s cubic-bezier(.2,.7,.2,1); }
.js-anim .grow.in { width: var(--w) !important; }

.js-anim .draw { stroke-dasharray: var(--len, 2400); stroke-dashoffset: var(--len, 2400);
  transition: stroke-dashoffset 1.5s cubic-bezier(.3,.7,.2,1); }
.js-anim .draw.in { stroke-dashoffset: 0; }
.js-anim .fade   { opacity: 0; transition: opacity .8s ease .45s; }
.js-anim .fade.in { opacity: 1; }
.js-anim .fade-t { opacity: 0; transition: opacity .8s ease .7s; }
.js-anim .fade-t.in { opacity: 1; }

[data-count] { font-variant-numeric: tabular-nums; }

/* hover lift on card surfaces */
.card, .feature, .step, .axis, .qcard, .labcard, .pil, .out, .tier, .cov, .origin {
  transition: transform .2s cubic-bezier(.2,.7,.2,1), box-shadow .2s; }
.feature:hover, .step:hover, .axis:hover, .qcard:hover, .labcard:hover, .cov:hover, .origin:hover {
  transform: translateY(-2px); box-shadow: var(--shadow); }

@media (prefers-reduced-motion: reduce) {
  .feature:hover, .step:hover, .axis:hover, .qcard:hover, .labcard:hover,
  .cov:hover, .origin:hover, .card:hover { transform: none; }
}