/* From binary to agents — Sui Basecamp workshop, presented as a slide deck.
   Full-viewport slides, horizontal track, arrow / swipe / wheel navigation. */

:root {
  /* Metropolis palette — near-black ground, Monad purple + magenta, lavender-grey text */
  --bg: #05060a;
  --bg-2: #0f1015;
  --bg-3: #16171d;
  --line: #23242c;
  --line-2: #34353f;
  --ink: #fbfaf9;
  --ink-2: #9d9db2;
  --ink-3: #565666;
  --accent: #4da2ff;
  --accent-2: #6ee7c7;
  --accent-soft: rgba(77, 162, 255, 0.15);
  --grad: linear-gradient(90deg, #4da2ff, #6ee7c7);

  --display: "Pixelify Sans", "JetBrains Mono", ui-monospace, monospace;
  --serif: "Inter", ui-sans-serif, system-ui, sans-serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* signature: uppercase, wide-tracked mono for every micro-label */
  --label-ls: 0.14em;
}

* { box-sizing: border-box; }

html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

/* Basecamp-style grain film over everything (under the chrome) */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.06;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line-2); transition: color 0.15s, border-color 0.15s; }
a:hover { color: var(--accent); border-color: var(--accent); }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.08; margin: 0; }
::selection { background: var(--accent); color: #05060a; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- top bar ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; align-items: center; gap: 16px;
  padding: 16px 22px; pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.brand {
  display: flex; align-items: center; gap: 9px; border: 0; background: transparent; cursor: pointer;
  font-family: var(--mono); font-size: 12px; letter-spacing: var(--label-ls); text-transform: uppercase; color: var(--ink);
}
.brand .dot { width: 9px; height: 9px; border-radius: 999px; background: var(--grad); box-shadow: 0 0 14px var(--accent); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.pdf-link { border: 0; font-family: var(--mono); font-size: 11px; letter-spacing: var(--label-ls); text-transform: uppercase; color: var(--ink-3); }
.pdf-link:hover { color: var(--accent); }
.chip-btn {
  border: 1px solid var(--line-2); background: transparent; color: var(--ink-2);
  font-family: var(--mono); font-size: 11px; letter-spacing: var(--label-ls); text-transform: uppercase;
  padding: 6px 11px; border-radius: 999px; cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.chip-btn:hover { border-color: var(--accent); color: var(--ink); }

.qr-overlay {
  position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 24px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.qr-overlay[hidden] { display: none; }
.qr-overlay-card { text-align: center; display: grid; justify-items: center; }
#qrBig {
  width: min(64vw, 300px); height: min(64vw, 300px);
  background: #fff; border-radius: 16px; padding: 16px; display: grid; place-items: center;
}
#qrBig img, #qrBig canvas { display: block; width: 100% !important; height: 100% !important; }
.qr-overlay .qr-cap { font-family: var(--sans); font-weight: 600; font-size: 20px; letter-spacing: -0.02em; color: var(--ink); margin: 16px 0 2px; }
.qr-overlay .qr-url { font-family: var(--mono); font-size: 12px; color: var(--ink-3); word-break: break-all; max-width: 320px; margin: 0; }
.qr-close {
  margin-top: 18px; border: 1px solid var(--line-2); background: transparent; color: var(--ink-3);
  font-family: var(--mono); font-size: 11px; letter-spacing: var(--label-ls); text-transform: uppercase; padding: 7px 16px; border-radius: 999px; cursor: pointer;
}
.qr-close:hover { border-color: var(--accent); color: var(--ink); }
.counter { font-family: var(--mono); font-size: 12px; color: var(--ink-3); letter-spacing: var(--label-ls); min-width: 62px; text-align: right; }

.langs { display: flex; border: 1px solid var(--line-2); border-radius: 999px; overflow: hidden; }
.langs button {
  border: 0; background: transparent; color: var(--ink-3);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em;
  padding: 6px 9px; cursor: pointer; transition: color 0.15s, background 0.15s;
}
.langs button { text-transform: uppercase; }
.langs button[aria-pressed="true"] { color: var(--bg); background: var(--ink); }
.langs button:hover:not([aria-pressed="true"]) { color: var(--ink); }

/* ---------- deck ---------- */
.deck { position: fixed; inset: 0; overflow: hidden; }
.track {
  display: flex; height: 100%;
  transition: transform 0.55s cubic-bezier(0.65, 0, 0.2, 1);
  will-change: transform;
}
.track.no-anim { transition: none; }
@media (prefers-reduced-motion: reduce) { .track { transition: none; } }

.slide {
  flex: 0 0 100%; width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  padding: 92px 40px 88px; overflow-y: auto; position: relative;
}
.slide-inner { width: 100%; max-width: 940px; }

.slide h2 { font-size: clamp(30px, 5.4vw, 54px); letter-spacing: -0.035em; margin-bottom: 22px; }
.slide h2 .serif { color: var(--accent); font-weight: 600; }
.slide .sub { color: var(--ink-2); font-size: clamp(16px, 2.2vw, 20px); max-width: 62ch; margin: 0; }
.slide .big { color: var(--ink); font-size: clamp(19px, 3vw, 30px); line-height: 1.4; letter-spacing: -0.02em; max-width: 26ch; margin: 0; }

.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; letter-spacing: var(--label-ls);
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 26px;
}
.kicker::before { content: ""; width: 24px; height: 1px; background: var(--accent); }

/* title slide */
.slide--title { justify-content: flex-start; }
#scene { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; display: block; }
.slide--title::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(60% 40% at 50% 112%, color-mix(in srgb, var(--accent) 60%, transparent) 0%, transparent 68%),
    radial-gradient(42% 30% at 74% 104%, color-mix(in srgb, var(--accent-2) 48%, transparent) 0%, transparent 70%),
    radial-gradient(58% 55% at 74% 42%, transparent 0%, var(--bg) 82%),
    linear-gradient(180deg, transparent 50%, var(--bg) 100%);
}
.slide--title .slide-inner { position: relative; z-index: 2; }
.eyebrow { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: var(--label-ls); text-transform: uppercase; color: var(--accent); margin-bottom: 26px; }
.slide--title h1 {
  font-family: var(--display); font-weight: 600; text-transform: uppercase;
  font-size: clamp(40px, 8.4vw, 100px); letter-spacing: 0; line-height: 1; margin-bottom: 24px;
}
.lede-serif {
  font-family: var(--sans); font-weight: 400; font-style: italic;
  font-size: clamp(19px, 3vw, 30px); letter-spacing: -0.02em; line-height: 1.32;
  color: var(--ink-2); max-width: 30ch; margin: 0 0 30px;
}
.hint { font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: var(--label-ls); text-transform: uppercase; margin: 0; }

.title-qr { display: flex; align-items: center; gap: 14px; margin: 28px 0 22px; }
#qrHero { width: 94px; height: 94px; background: #fff; border-radius: 10px; padding: 8px; display: grid; place-items: center; flex: 0 0 auto; }
#qrHero img, #qrHero canvas { display: block; width: 100% !important; height: 100% !important; }
.title-qr span { font-family: var(--mono); font-size: 10px; color: var(--ink-3); letter-spacing: var(--label-ls); text-transform: uppercase; line-height: 1.6; max-width: 13ch; }

/* divider slides */
.slide--divider .part-n {
  font-family: var(--display); font-weight: 700; font-size: clamp(56px, 11vw, 128px); line-height: 1;
  color: var(--accent); opacity: 0.3; margin-bottom: 10px;
}
.slide--divider h2 { font-size: clamp(34px, 6.5vw, 68px); margin-bottom: 20px; }

/* contents */
.contents { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.contents button {
  width: 100%; text-align: left; border: 1px solid var(--line); background: var(--bg-2);
  border-radius: 16px; padding: 22px 24px; cursor: pointer; color: var(--ink);
  display: flex; align-items: baseline; gap: 20px;
  font-size: clamp(19px, 3.2vw, 32px); font-family: var(--sans); font-weight: 600; letter-spacing: -0.03em;
  transition: border-color 0.18s, background 0.18s, transform 0.18s;
}
.contents button:hover { border-color: var(--accent); background: var(--bg-3); transform: translateX(4px); }
.contents .n { font-family: var(--display); font-weight: 700; font-size: 15px; color: var(--accent); }

/* show of hands */
.hands { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hand {
  border: 1px solid var(--line-2); background: var(--bg-2); color: var(--ink-2);
  border-radius: 999px; padding: 12px 18px; font-size: 15px; cursor: pointer;
  display: flex; align-items: center; gap: 10px; transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.hand .mk { width: 16px; height: 16px; border-radius: 5px; border: 1px solid var(--line-2); display: grid; place-items: center; font-size: 11px; color: transparent; }
.hand[aria-pressed="true"] { color: var(--ink); border-color: var(--accent); background: var(--accent-soft); }
.hand[aria-pressed="true"] .mk { background: var(--accent); border-color: var(--accent); color: var(--bg); }

/* layer mark */
.layer-mark { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.layer-mark .lm-n { font-family: var(--display); font-weight: 700; font-size: 13px; color: var(--accent); border: 1px solid var(--line-2); border-radius: 999px; padding: 4px 11px; }
.layer-mark .lm-tag { font-family: var(--mono); font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: var(--label-ls); }

/* ladder */
.ladder { display: grid; gap: 6px; margin: 26px 0 28px; max-width: 420px; }
.rung { border: 1px solid var(--line); background: var(--bg-2); border-radius: 12px; padding: 14px 18px; font-family: var(--mono); font-size: 13px; color: var(--ink-2); text-transform: uppercase; letter-spacing: var(--label-ls); }
.rung span { font-family: var(--display); color: var(--accent); margin-right: 12px; }
.rung:first-child { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }

/* quote */
.slide--quote .slide-inner { max-width: 860px; }
.pullquote {
  margin: 0; padding: 0 0 0 30px; border-left: 3px solid var(--accent);
  font-family: var(--sans); font-style: normal; font-weight: 600;
  font-size: clamp(24px, 4.6vw, 48px); line-height: 1.22; letter-spacing: -0.035em; color: var(--ink);
}
.pullquote cite { display: block; margin-top: 22px; font: 500 12px/1 var(--mono); text-transform: uppercase; color: var(--ink-3); letter-spacing: var(--label-ls); }

/* three.js visualisations */
.viz { width: 100%; height: min(48vh, 400px); display: block; margin: 6px 0 0; }
.viz-cap { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: var(--label-ls); color: var(--ink-3); text-align: center; margin: 12px 0 0; }

/* diagram (legacy, unused) */
.diagram { border: 1px solid var(--line); background: var(--bg-2); border-radius: 18px; padding: 34px; margin-top: 6px; }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram .lbl { fill: var(--ink-2); font: 500 13px var(--sans); }
.diagram .lbl-strong { fill: var(--ink); font: 600 15px var(--sans); }
.diagram .stroke { stroke: var(--line-2); }
.diagram .stroke-accent { stroke: var(--accent); }
.dash { stroke-dasharray: 6 8; animation: march 1.4s linear infinite; }
@keyframes march { to { stroke-dashoffset: -28; } }
@media (prefers-reduced-motion: reduce) { .dash { animation: none; } }

/* cards */
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.card { border: 1px solid var(--line); background: var(--bg-2); border-radius: 18px; padding: 26px; }
.card .tag { font-family: var(--mono); font-size: 10px; color: var(--accent); display: block; margin-bottom: 12px; letter-spacing: var(--label-ls); text-transform: uppercase; }
.card h3 { font-size: 18px; margin-bottom: 10px; letter-spacing: -0.02em; }
.card p { margin: 0; font-size: 14.5px; color: var(--ink-2); }
.card .spec { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
.card .spec span { font-family: var(--mono); font-size: 11px; color: var(--ink-2); border: 1px solid var(--line-2); border-radius: 999px; padding: 4px 9px; }

/* terminal */
.term { border: 1px solid var(--line); border-radius: 12px; background: #090b0e; font-family: var(--mono); font-size: 13px; line-height: 1.75; color: var(--ink-2); margin-top: 16px; overflow: hidden; }
.term .bar { display: flex; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--line); }
.term .bar i { width: 10px; height: 10px; border-radius: 999px; background: var(--line-2); display: block; }
.term pre { margin: 0; padding: 16px 18px; overflow-x: auto; white-space: pre; }
.term .c { color: var(--accent); }
.term .g { color: var(--accent-2); }
.term .m { color: var(--ink-3); }

/* wallet */
.wallet { border: 1px solid var(--line-2); background: linear-gradient(180deg, var(--bg-3), var(--bg-2)); border-radius: 18px; padding: 24px; max-width: 420px; margin-bottom: 22px; }
.wallet .top { display: flex; justify-content: space-between; align-items: center; font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: var(--label-ls); text-transform: uppercase; }
.wallet .bal { font-family: var(--display); font-weight: 700; font-size: 44px; line-height: 1.1; margin: 16px 0 18px; }
.wallet .bal small { font-size: 15px; color: var(--ink-3); font-family: var(--mono); }
.wallet .ask { border: 1px solid var(--line-2); border-radius: 10px; padding: 11px 14px; font-size: 14px; color: var(--ink-3); background: var(--bg); }
.wallet .prop { margin-top: 14px; border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--bg); font-size: 13.5px; color: var(--ink-2); }
.wallet .prop .row { display: flex; justify-content: space-between; gap: 10px; }
.wallet .badge { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; color: var(--accent-2); border: 1px solid color-mix(in srgb, var(--accent-2) 40%, var(--line)); border-radius: 999px; padding: 3px 8px; }
.wallet .confirm { margin-top: 14px; width: 100%; text-align: center; background: var(--accent); color: #05060a; border: 0; border-radius: 10px; padding: 12px; font: 600 12px var(--mono); letter-spacing: var(--label-ls); text-transform: uppercase; cursor: default; box-shadow: 0 0 24px color-mix(in srgb, var(--accent) 45%, transparent); }

/* pipeline */
.pipe { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.pipe > span { border: 1px solid var(--line); background: var(--bg-2); border-radius: 999px; padding: 10px 16px; font-size: 14px; color: var(--ink-2); display: flex; align-items: center; gap: 10px; }
.pipe > span .i { font-family: var(--display); font-weight: 700; font-size: 11px; color: var(--accent); }
.pipe > span.sign { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); color: var(--ink); }

/* sources */
.sources { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.src { background: var(--bg-2); border: 0; padding: 13px 18px; display: grid; grid-template-columns: 190px 1fr auto; gap: 14px; align-items: baseline; font-size: 13.5px; color: var(--ink-2); }
.src:hover { background: var(--bg-3); color: var(--ink); }
.src .l { color: var(--ink); font-weight: 500; }
.src .d { color: var(--ink-3); font-size: 12.5px; }
.src .u { font-family: var(--mono); font-size: 11px; color: var(--ink-3); white-space: nowrap; }
.src:hover .u { color: var(--accent); }

/* end slide */
.end-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }
.slide--end h2 { font-size: clamp(28px, 5vw, 46px); }
.end-links { display: flex; gap: 18px; margin-top: 24px; flex-wrap: wrap; }
.end-links a { border: 0; font-size: 14px; color: var(--ink-2); display: flex; align-items: center; gap: 9px; }
.end-links a:hover { color: var(--accent); }
.end-links .x-icon { width: 15px; height: 15px; fill: currentColor; }
.qr-side { text-align: center; }
#qr { width: 172px; height: 172px; background: #fff; border-radius: 12px; padding: 12px; display: grid; place-items: center; }
#qr img, #qr canvas { display: block; width: 100% !important; height: 100% !important; }
.qr-cap { font-family: var(--sans); font-weight: 600; font-size: 17px; letter-spacing: -0.02em; margin: 14px 0 4px; color: var(--ink); }
.qr-url { font-family: var(--mono); font-size: 11px; color: var(--ink-3); word-break: break-all; margin: 0; max-width: 196px; }

/* ---------- controls ---------- */
.controls { position: fixed; inset: auto 0 0 0; z-index: 40; pointer-events: none; }
.progress { height: 2px; background: var(--line); }
.progress span { display: block; height: 100%; width: 0; background: var(--grad); transition: width 0.4s ease; }
.arrows { display: flex; gap: 8px; justify-content: flex-end; padding: 14px 22px; }
.arrows button {
  pointer-events: auto; width: 40px; height: 40px; border-radius: 999px;
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--bg) 70%, transparent);
  color: var(--ink); font-size: 15px; cursor: pointer; backdrop-filter: blur(6px);
  transition: border-color 0.15s, background 0.15s;
}
.arrows button:hover { border-color: var(--accent); }
.arrows button:disabled { opacity: 0.3; cursor: default; border-color: var(--line); }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .slide { padding: 84px 22px 84px; }
  .grid.cols-2 { grid-template-columns: 1fr; }
  .src { grid-template-columns: 1fr; gap: 3px; }
  .src .u { white-space: normal; }
  .end-grid { grid-template-columns: 1fr; gap: 32px; }
  .qr-side { justify-self: start; text-align: left; }
  .qr-url { text-align: left; }
  .topbar { padding: 12px 16px; }
  .pdf-link { display: none; }
}
@media (max-width: 500px) {
  .slide h2 { font-size: clamp(26px, 8vw, 40px); }
  .contents button { font-size: 22px; padding: 18px; }
}