/* Super Duper Engine site: one stylesheet for both language pages. Lime is the agent, coral is the human. */
:root {
  --bg: #07090c;
  --bg-2: #0b0f14;
  --panel: #0d1218;
  --fg: #eef2f6;
  --muted: #9aa7b8;
  --dim: #66748a;
  --line: rgba(255, 255, 255, .075);
  --line-2: rgba(255, 255, 255, .14);
  --agent: #ffb23f;
  --agent-ink: #1b1206;
  --human: #7cc8ff;
  --bad: #ff6b5a;
  --radius: 18px;
  --wrap: 1200px;
  --font-display: "Unbounded", "Onest", system-ui, sans-serif;
  --font-body: "Onest", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 17px/1.6 var(--font-body); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: inherit; }
img, svg, canvas { display: block; }
::selection { background: var(--agent); color: var(--agent-ink); }
:focus-visible { outline: 2px solid var(--agent); outline-offset: 3px; border-radius: 8px; }
[hidden] { display: none !important; }
.wrap { width: min(var(--wrap), calc(100% - 32px)); margin: 0 auto; }
.skip { position: absolute; left: -9999px; top: 12px; z-index: 20; padding: 10px 14px; border-radius: 10px; background: var(--agent); color: var(--agent-ink); font-weight: 600; }
.skip:focus { left: 16px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid transparent; transition: background-color .25s, border-color .25s; }
.site-header.scrolled { background: rgba(7, 9, 12, .82); border-color: var(--line); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.site-header .wrap { display: flex; align-items: center; gap: 26px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font: 700 15px/1 var(--font-display); white-space: nowrap; }
.brand svg { width: 32px; height: 32px; flex: none; }
.nav { display: flex; gap: 26px; margin-left: auto; font-size: 15px; color: var(--muted); }
.nav a { text-decoration: none; transition: color .15s; }
.nav a:hover { color: var(--fg); }
.lang { display: flex; padding: 3px; border: 1px solid var(--line-2); border-radius: 999px; font: 600 12px/1 var(--font-mono); }
.lang a { padding: 7px 10px; border-radius: 999px; text-decoration: none; color: var(--muted); }
.lang a:hover { color: var(--fg); }
.lang a[aria-current="page"] { background: var(--fg); color: var(--bg); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 22px; border: 1px solid transparent; border-radius: 12px; font: 600 15px/1 var(--font-body); text-decoration: none; cursor: pointer; transition: transform .15s, background-color .15s, border-color .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--agent); color: var(--agent-ink); }
.btn-primary:hover { background: #d6ff73; }
.btn-ghost { border-color: var(--line-2); background: rgba(255, 255, 255, .02); color: var(--fg); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, .3); }
.btn-small { padding: 10px 14px; font-size: 14px; border-radius: 10px; }

/* Hero */
.hero { position: relative; padding: 84px 0 0; text-align: center; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 50% at 50% 0%, #000 20%, transparent 75%);
  pointer-events: none;
}
.hero::after { content: ""; position: absolute; left: 50%; top: -360px; width: 1100px; height: 720px; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(255, 178, 63, .14), transparent); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px; border: 1px solid rgba(255, 178, 63, .3); border-radius: 999px; background: rgba(255, 178, 63, .06); color: var(--agent); font: 600 12px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--agent); animation: pulse 2.2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255, 178, 63, .55); } 70% { box-shadow: 0 0 0 10px rgba(255, 178, 63, 0); } 100% { box-shadow: 0 0 0 0 rgba(255, 178, 63, 0); } }
h1 { max-width: 15ch; margin: 26px auto 0; font: 800 clamp(38px, 6.4vw, 86px)/.98 var(--font-display); letter-spacing: -.04em; text-wrap: balance; }
h1 em { font-style: normal; color: var(--agent); }
.lead { max-width: 700px; margin: 26px auto 0; color: var(--muted); font-size: clamp(17px, 1.5vw, 20px); text-wrap: pretty; }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 34px; }

/* Demo: the engine's own simulation, played back in the page */
.demo { margin-top: 64px; overflow: hidden; border: 1px solid var(--line-2); border-radius: 24px; background: radial-gradient(900px 420px at 30% 0%, rgba(255, 178, 63, .07), transparent 70%), var(--panel); box-shadow: 0 60px 140px -60px rgba(0, 0, 0, .95); text-align: left; }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr); height: 560px; }
.stage { position: relative; min-width: 0; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hud { position: absolute; left: 18px; top: 18px; display: flex; align-items: center; gap: 10px; padding: 9px 13px; border: 1px solid var(--line-2); border-radius: 999px; background: rgba(8, 11, 15, .72); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); font: 600 12px/1 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); transition: border-color .3s, color .3s; }
.hud i { width: 8px; height: 8px; border-radius: 50%; background: var(--dim); }
.hud[data-state="running"] { color: var(--fg); }
.hud[data-state="running"] i { background: var(--fg); animation: pulse 1.2s infinite; }
.hud[data-state="failed"] { color: var(--bad); border-color: rgba(255, 107, 90, .5); }
.hud[data-state="failed"] i { background: var(--bad); }
.hud[data-state="passed"] { color: var(--agent); border-color: rgba(255, 178, 63, .5); }
.hud[data-state="passed"] i { background: var(--agent); }
.stage-note { position: absolute; left: 18px; bottom: 16px; color: var(--dim); font: 500 12px/1.4 var(--font-mono); }
.stage-fallback { position: absolute; inset: 0; display: grid; place-items: center; padding: 24px; color: var(--muted); text-align: center; }
.log { display: flex; flex-direction: column; justify-content: flex-end; gap: 12px; overflow: hidden; padding: 22px; border-left: 1px solid var(--line); -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 64px); mask-image: linear-gradient(to bottom, transparent 0, #000 64px); }
.msg { display: grid; grid-template-columns: 62px 1fr; gap: 10px; font-size: 15px; line-height: 1.5; animation: rise .35s ease-out both; }
.msg .who { padding-top: 2px; font: 600 11.5px/1.6 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; }
.msg.you .who { color: var(--human); }
.msg.agent .who { color: var(--agent); }
.msg.result { grid-template-columns: 1fr; padding: 11px 13px; border-radius: 12px; font: 500 13px/1.5 var(--font-mono); }
.msg.result.bad { color: #ffc4bb; background: rgba(255, 107, 90, .09); border: 1px solid rgba(255, 107, 90, .3); }
.msg.result.good { color: #ffe2b0; background: rgba(255, 178, 63, .08); border: 1px solid rgba(255, 178, 63, .3); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.demo-caption { max-width: 760px; margin: 18px auto 0; color: var(--dim); font-size: 14.5px; text-align: center; }

/* Sections */
section { padding: 112px 0; }
.hero + section { padding-top: 120px; }
section + section { border-top: 1px solid var(--line); }
.kicker { color: var(--agent); font: 600 12px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; }
h2 { max-width: 20ch; margin: 18px 0 0; font: 700 clamp(30px, 3.8vw, 52px)/1.05 var(--font-display); letter-spacing: -.035em; text-wrap: balance; }
.section-lead { max-width: 660px; margin: 20px 0 0; color: var(--muted); text-wrap: pretty; }

/* Why: the user's problem on the left, what the engine does about it on the right */
.why { margin-top: 52px; border-top: 1px solid var(--line); }
.why-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.why-row h3 { margin: 0; font: 600 21px/1.3 var(--font-display); letter-spacing: -.015em; }
.why-row .problem p { margin: 10px 0 0; color: var(--muted); }
.why-row .answer { position: relative; padding-left: 30px; }
.why-row .answer::before { content: "\2713"; position: absolute; left: 0; top: 0; color: var(--agent); font: 700 18px/1.4 var(--font-mono); }
.why-row .answer p { margin: 0; color: var(--fg); font-size: 18px; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 52px; counter-reset: step; }
.step { position: relative; padding: 30px 28px 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); }
.step::before { counter-increment: step; content: "0" counter(step); display: block; color: var(--agent); font: 600 13px/1 var(--font-mono); letter-spacing: .08em; }
.step.human::before { color: var(--human); }
.step h3 { margin: 20px 0 10px; font: 600 21px/1.25 var(--font-display); letter-spacing: -.015em; }
.step p { margin: 0; color: var(--muted); font-size: 16px; }

/* Games made by agents: what to do, controls, who made it and how long it took */
.games { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 44px; }
.game { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); transition: border-color .2s; }
.game:hover { border-color: var(--line-2); }
.game-shot { display: block; overflow: hidden; }
.game-shot img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; background: #10151c; transition: transform .35s; }
.game:hover .game-shot img { transform: scale(1.03); }
.game-body { display: flex; flex: 1; flex-direction: column; padding: 22px 22px 24px; }
.game-kind { color: var(--agent); font: 600 12px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; }
.game h3 { margin: 12px 0 8px; font: 700 22px/1.2 var(--font-display); letter-spacing: -.015em; }
.game p { margin: 0; color: var(--muted); font-size: 15.5px; }
.game-facts { display: grid; gap: 10px; align-content: start; flex: 1; margin: 18px 0 22px; padding: 16px 0 0; border-top: 1px solid var(--line); }
.game-facts div { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 10px; }
.game-facts dt { color: var(--dim); font: 500 12px/1.5 var(--font-mono); text-transform: uppercase; letter-spacing: .06em; }
.game-facts dd { margin: 0; color: var(--fg); font-size: 14.5px; line-height: 1.5; }
.game-facts .time dd { color: var(--agent); font: 600 14px/1.5 var(--font-mono); }
.game .btn { align-self: flex-start; }
.game-soon { display: grid; place-items: center; aspect-ratio: 16 / 9; background: repeating-linear-gradient(135deg, rgba(255, 178, 63, .05) 0 14px, transparent 14px 28px), #0e131a; }
.game-soon span { padding: 8px 14px; border: 1px dashed rgba(255, 178, 63, .45); border-radius: 999px; color: var(--agent); font: 600 12px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.games-note { margin: 22px 0 0; color: var(--dim); font-size: 15px; }

/* Devlog preview */
.devlog { margin-top: 44px; border-top: 1px solid var(--line); }
.entry { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 28px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.entry time { color: var(--dim); font: 500 13px/1.7 var(--font-mono); }
.entry h3 { margin: 0; font: 600 19px/1.3 var(--font-display); letter-spacing: -.01em; }
.entry p { max-width: 760px; margin: 8px 0 0; color: var(--muted); }
.entry.is-hidden { display: none; }
.devlog-more { margin-top: 26px; }

/* FAQ */
.faq { max-width: 860px; margin-top: 40px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 24px 0; cursor: pointer; list-style: none; font: 600 18px/1.35 var(--font-display); letter-spacing: -.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; color: var(--agent); font: 500 24px/1 var(--font-mono); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { max-width: 720px; margin: -6px 0 24px; color: var(--muted); }

/* Final call */
.final { padding: 64px 48px; border: 1px solid rgba(255, 178, 63, .32); border-radius: 28px; background: radial-gradient(700px 340px at 50% 0%, rgba(255, 178, 63, .14), transparent 70%), var(--panel); text-align: center; }
.final h2 { max-width: 18ch; margin: 0 auto; }
.final p { max-width: 560px; margin: 18px auto 0; color: var(--muted); }

/* Footer */
.site-footer { padding: 40px 0 56px; border-top: 1px solid var(--line); color: var(--dim); font-size: 14.5px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--fg); }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 22px; }

@media (max-width: 980px) {
  .nav { display: none; }
  .header-cta { display: none; }
  .lang { margin-left: auto; }
  .demo-grid { grid-template-columns: 1fr; grid-template-rows: 340px auto; height: auto; }
  .log { min-height: 260px; border-left: 0; border-top: 1px solid var(--line); }
  .why-row { grid-template-columns: 1fr; gap: 16px; }
  .steps { grid-template-columns: 1fr; }
  .games { grid-template-columns: 1fr; }
  .entry { grid-template-columns: 1fr; gap: 6px; }
  section { padding: 80px 0; }
  .hero { padding-top: 52px; }
  .demo { margin-top: 44px; border-radius: 20px; }
  .final { padding: 44px 24px; }
}
@media (max-width: 520px) {
  .demo-grid { grid-template-rows: 280px auto; }
  .msg { grid-template-columns: 54px 1fr; font-size: 14.5px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pulse, .hud i { animation: none !important; }
  .msg { animation: none; }
  .btn { transition: none; }
}