/* ====================================================================
   learn.ai8.works — ai8 acid design system
   Archivo Black + Anton + Archivo + JetBrains Mono · acid #CCFF00 on ink
   ==================================================================== */
:root {
  --ink: #0A0A0A;
  --paper: #FFFFFF;
  --acid: #CCFF00;
  --acid-deep: #A6D900;
  --carbon: #161616;
  --carbon-2: #1E1E1E;
  --smoke: #8A8A82;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.28);
  --hot: #FF2D2D;
  --cool: #00E5FF;

  --font-display: "Archivo Black", "Helvetica Neue", Impact, sans-serif;
  --font-condensed: "Anton", "Oswald", "Arial Narrow", sans-serif;
  --font-sans: "Archivo", "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;

  --wrap-x: clamp(20px, 8vw, 120px);
  --maxw: 1180px;
  --topbar-h: 64px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 2px; }
img { max-width: 100%; display: block; }
hr { border: 0; border-top: 1px solid var(--line); margin: 0; }
::selection { background: var(--acid); color: var(--ink); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--wrap-x); }

/* ---------- type primitives ---------- */
.label, .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.2;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--smoke);
  font-weight: 400;
}
.sectlabel {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--acid);
}
.claim {
  font-family: var(--font-condensed);
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 0.005em;
  line-height: 0.96;
}
.claim em { color: var(--acid); font-style: normal; }
h1, h2, h3, h4 { text-wrap: balance; }
h2.display {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: lowercase;
  letter-spacing: -0.04em;
  line-height: 0.9;
  font-size: clamp(34px, 6vw, 64px);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  padding: 15px 26px;
  border-radius: 0;
  border: 2px solid var(--acid);
  background: var(--acid);
  color: var(--ink);
  cursor: pointer;
  line-height: 1;
}
.btn:hover { background: var(--ink); color: var(--acid); text-decoration: none; }
.btn:focus-visible { outline: 2px solid var(--acid); outline-offset: 3px; }
.btn--ghost { background: transparent; color: var(--paper); border-color: var(--paper); }
.btn--ghost:hover { background: var(--paper); color: var(--ink); }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between;
  padding-inline: var(--wrap-x);
  background: rgba(10, 10, 10, 0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.03em;
  text-transform: lowercase;
}
.brand .dot { color: var(--acid); }
.topbar nav { display: flex; gap: 22px; align-items: center; }
.topbar nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--smoke);
}
.topbar nav a:hover { color: var(--acid); text-decoration: none; }
.topbar nav a.cta { color: var(--ink); background: var(--acid); padding: 8px 14px; }
.topbar nav a.cta:hover { background: var(--paper); }
@media (max-width: 640px) { .topbar nav a.hide-sm { display: none; } }

/* ---------- hero ---------- */
.hero { padding-block: clamp(56px, 11vw, 120px) clamp(40px, 7vw, 80px); }
.hero h1 {
  font-family: var(--font-condensed);
  text-transform: uppercase;
  font-weight: 400;
  letter-spacing: 0.005em;
  line-height: 0.94;
  font-size: clamp(48px, 11vw, 132px);
}
.hero h1 em { color: var(--acid); font-style: normal; }
.hero .lede {
  margin-top: 26px;
  max-width: 56ch;
  font-size: clamp(17px, 2.1vw, 21px);
  color: rgba(255, 255, 255, 0.86);
}
.hero .meta { margin-top: 18px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- section frame ---------- */
.section { padding-block: clamp(48px, 8vw, 96px); border-top: 1px solid var(--line); }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 36px; flex-wrap: wrap; }
.section__head h2 { font-family: var(--font-display); font-weight: 900; text-transform: lowercase; letter-spacing: -0.04em; line-height: 0.9; font-size: clamp(30px, 5vw, 52px); }

/* ---------- story grid ---------- */
.grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

.card {
  background: var(--ink);
  padding: 28px 26px 30px;
  display: flex; flex-direction: column; gap: 14px;
  min-height: 220px;
  position: relative;
  transition: background 120ms ease;
}
.card:hover { background: var(--carbon); text-decoration: none; }
.card .kicker { display: flex; gap: 12px; align-items: center; }
.card .tagdot { width: 8px; height: 8px; background: var(--acid); }
.card h3 {
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
  font-size: clamp(20px, 2.4vw, 27px);
}
.card p { color: rgba(255, 255, 255, 0.7); font-size: 15.5px; }
.card .more { margin-top: auto; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--acid); }

/* ---------- link wall ---------- */
.linkrow {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px; align-items: center;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
}
.linkrow:hover { text-decoration: none; }
.linkrow:hover h3 { color: var(--acid); }
.linkrow .type {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  border: 1px solid var(--line-strong); padding: 6px 10px; color: var(--smoke); white-space: nowrap;
}
.linkrow .type.video { color: var(--cool); border-color: rgba(0,229,255,0.4); }
.linkrow .type.article { color: var(--acid); border-color: rgba(204,255,0,0.4); }
.linkrow h3 { font-family: var(--font-sans); font-weight: 700; font-size: clamp(17px, 2vw, 21px); letter-spacing: -0.01em; }
.linkrow .src { color: var(--smoke); font-size: 14px; margin-top: 3px; }
.linkrow .arrow { font-family: var(--font-mono); color: var(--smoke); }
@media (max-width: 640px) { .linkrow { grid-template-columns: auto 1fr; } .linkrow .arrow { display: none; } }

/* ---------- members panel ---------- */
.members {
  background: var(--acid);
  color: var(--ink);
  padding: clamp(40px, 7vw, 80px) var(--wrap-x);
}
.members .inner { max-width: var(--maxw); margin: 0 auto; display: grid; gap: 28px; }
.members h2 { font-family: var(--font-display); font-weight: 900; text-transform: lowercase; letter-spacing: -0.04em; line-height: 0.88; font-size: clamp(36px, 7vw, 80px); }
.members p { max-width: 56ch; font-size: clamp(17px, 2vw, 20px); }
.members .gate { display: flex; gap: 10px; flex-wrap: wrap; max-width: 460px; }
.members input[type="password"] {
  flex: 1 1 220px;
  appearance: none;
  border: 2px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
  padding: 14px 16px;
  letter-spacing: 0.08em;
  outline: none;
}
.members input::placeholder { color: rgba(10,10,10,0.5); }
.members .gate .btn { background: var(--ink); color: var(--acid); border-color: var(--ink); }
.members .gate .btn:hover { background: var(--paper); color: var(--ink); }
.members .err { display: none; font-family: var(--font-mono); font-size: 13px; background: var(--ink); color: var(--hot); padding: 10px 14px; }
.members .err.show { display: block; }

/* ---------- embedded form (D365 CI – Journeys) ---------- */
.formcard {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--acid);
  padding: clamp(20px, 4vw, 36px);
  max-width: 640px;
}
.formcard a { color: #0a58ca; }
/* keep the vendor form's own controls legible on the paper card */
.formcard input, .formcard select, .formcard textarea { font-family: var(--font-sans); }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding-block: 48px; }
.foot .inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.foot .sig { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--smoke); }

/* ---------- article (post) ---------- */
.post { padding-block: clamp(40px, 7vw, 90px); }
.post .back { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--smoke); }
.post .back:hover { color: var(--acid); text-decoration: none; }
.post header { margin: 28px 0 40px; }
.post .h1 {
  font-family: var(--font-condensed);
  text-transform: uppercase; font-weight: 400; letter-spacing: 0.005em; line-height: 0.96;
  font-size: clamp(38px, 7vw, 84px);
}
.post .dateline { margin-top: 18px; }
.prose { max-width: 68ch; font-size: 18px; line-height: 1.7; color: rgba(255,255,255,0.9); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-family: var(--font-sans); font-weight: 900; letter-spacing: -0.02em; font-size: clamp(24px, 3.4vw, 34px); margin-top: 1.8em; line-height: 1.1; }
.prose h3 { font-family: var(--font-sans); font-weight: 900; letter-spacing: -0.01em; font-size: clamp(20px, 2.6vw, 25px); margin-top: 1.5em; }
.prose a { color: var(--acid); text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.4em; }
.prose blockquote { border-left: 3px solid var(--acid); padding-left: 20px; color: rgba(255,255,255,0.75); font-style: italic; }
.prose code { font-family: var(--font-mono); font-size: 0.86em; background: var(--carbon); padding: 2px 6px; border: 1px solid var(--line); }
.prose pre { background: var(--carbon); border: 1px solid var(--line); padding: 20px; overflow-x: auto; }
.prose pre code { background: none; border: 0; padding: 0; font-size: 14px; line-height: 1.55; }
.prose img { margin-block: 1.4em; border: 1px solid var(--line); }
.prose hr { margin-block: 2em; }

/* ---------- members badge on gated pages ---------- */
.memberbar {
  background: var(--acid); color: var(--ink);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 10px var(--wrap-x); display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.memberbar a { color: var(--ink); text-decoration: underline; }

@media (prefers-reduced-motion: no-preference) {
  .hero h1, .hero .lede { animation: fadeUp 620ms ease both; }
  .hero .lede { animation-delay: 90ms; }
  @keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
}