/* Feature landing pages (/make-steam-games-with-ai/, /professional-game-development/).
   The arcadegnt.com landing design (~/vbgnt-lite api/pages.py + api/landing.py), ported
   to static HTML: Bricolage Grotesque headlines with gradient marks, a pixel eyebrow,
   dotted glowing panels, window chrome, pill rows, a card grid, a two-column FAQ and a
   closing call to action. Only these pages load this file; the rest of vbgnt.com stays
   on site.css. Built by build_blog.py (build_landing). */

:root {
  --ground: #0c0a12; --raised: #15121e; --card: #1b1726; --line: #2b2638; --line-strong: #3e374f;
  --violet: #9277ff; --accent: #ff6b35; --accent-hot: #ff8a5c; --on-accent: #1a0b04;
  --gold: #ffc94a; --cyan: #22d3ee;
  --fg1: #f8f4ec; --fg2: #ddd8e6; --fg3: #b4adc4; --fg4: #8c859b;
  --ok: #4ade80; --danger: #ff6b6b;
  --panel-sky: #0f1828; --panel-lilac: #17122c; --panel-sage: #0e1d19; --panel-peach: #22130f; --panel-sand: #1f190c;
  --display: "Bricolage Grotesque", "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --pixel: "Press Start 2P", ui-monospace, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
html { background: var(--ground); }
body { color: var(--fg2); font: 16px/1.6 var(--body); -webkit-font-smoothing: antialiased; min-height: 100vh;
  background: radial-gradient(1100px 620px at 12% -8%, rgba(146, 119, 255, 0.17), transparent 62%),
              radial-gradient(900px 520px at 92% -4%, rgba(255, 107, 53, 0.11), transparent 60%), var(--ground);
  background-repeat: no-repeat; }
::selection { background: rgba(255, 107, 53, 0.35); color: var(--fg1); }
a { color: var(--accent-hot); text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--display); color: var(--fg1); margin: 0; line-height: 1.05; text-wrap: balance;
  font-weight: 700; letter-spacing: -0.025em; }
p { margin: 0; }
img { max-width: 100%; height: auto; }
code { font-family: var(--mono); font-size: 0.88em; background: var(--raised); border: 1px solid var(--line);
  border-radius: 6px; padding: 1px 6px; color: var(--fg1); overflow-wrap: anywhere; }
.wrap { max-width: 1200px; margin: 0 auto; padding-inline: 24px; }
main { overflow-x: clip; }

/* top bar */
.top { display: flex; align-items: center; gap: 18px; padding-block: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fg1);
  font-family: var(--display); font-weight: 700; font-size: 22px; letter-spacing: -0.03em; }
.top nav { margin-left: auto; display: flex; gap: 24px; align-items: center; font-size: 15px; }
.top nav a { color: var(--fg3); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current] { color: var(--fg1); }
.top nav .btn { color: var(--on-accent); }

/* buttons, eyebrow, marks */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px;
  padding: 0 20px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--raised);
  color: var(--fg1); font: 600 15px var(--body); cursor: pointer; text-decoration: none;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.35); transition: transform .12s, box-shadow .12s, background .12s; }
.btn.primary { background: var(--accent); border-color: var(--accent-hot); color: var(--on-accent);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.25), 0 10px 30px -12px rgba(255, 107, 53, 0.75); }
.btn:hover { border-color: var(--fg4); }
.btn.primary:hover { background: var(--accent-hot); box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.25), 0 12px 36px -10px rgba(255, 107, 53, 0.9); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, summary:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.big { min-height: 52px; padding: 0 26px; font-size: 17px; border-radius: 12px; }
.eyebrow { display: inline-flex; width: fit-content; align-items: center; gap: 10px; font: 10px/1 var(--pixel); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--gold); border: 1px solid var(--line-strong); background: rgba(21, 18, 30, 0.7);
  border-radius: 999px; padding: 9px 14px; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--accent);
  box-shadow: 0 0 10px var(--accent); animation: coin 1.2s steps(2, jump-none) infinite; }
@keyframes coin { 50% { opacity: 0.2; } }
.mark { --m1: #ffd166; --m2: #ff6b35; background: linear-gradient(100deg, var(--m1), var(--m2)); -webkit-background-clip: text;
  background-clip: text; color: transparent; padding: 0 0.04em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.mark.lilac { --m1: #d6caff; --m2: #8b6cff; } .mark.sage { --m1: #b3f7dc; --m2: #2fd29a; }
.mark.peach { --m1: #ffc6aa; --m2: #ff5fa8; } .mark.sky { --m1: #b5e8ff; --m2: #4aa3ff; }

/* hero */
section.s { padding-block: 88px 0; }
.hero { text-align: center; padding-block: 56px 0; display: grid; justify-items: center; gap: 22px; position: relative; isolation: isolate; }
.hero::before { content: ""; position: absolute; z-index: -1; left: 50%; top: -90px; width: 140vw; height: 560px;
  transform: translateX(-50%) perspective(420px) rotateX(58deg); transform-origin: 50% 0;
  background-image: linear-gradient(rgba(146, 119, 255, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(146, 119, 255, 0.13) 1px, transparent 1px); background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(transparent, #000 25%, #000 45%, transparent 85%);
  mask-image: linear-gradient(transparent, #000 25%, #000 45%, transparent 85%); pointer-events: none; }
.hero h1 { font-size: clamp(42px, 7vw, 84px); max-width: 15ch; line-height: 1.0; letter-spacing: -0.035em; }
.hero .sub { font-size: 21px; color: var(--fg3); max-width: 34em; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.works { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px; color: var(--fg3);
  font-weight: 500; margin-top: 6px; }
.works .lbl { color: var(--fg4); font-size: 14px; width: 100%; text-align: center; }
.crumbs { font-size: 14px; color: var(--fg4); }
.crumbs a { color: var(--fg3); text-decoration: none; }
.crumbs a:hover { color: var(--fg1); }

/* panels and windows */
.panel { border-radius: 28px; position: relative; overflow: hidden; background-color: var(--bgc, var(--panel-sky));
  border: 1px solid var(--line);
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1.2px),
    radial-gradient(110% 70% at 50% 0%, var(--glow, transparent), transparent 72%);
  background-size: 16px 16px, auto; }
.panel.sky { --bgc: var(--panel-sky); --glow: rgba(92, 170, 255, 0.2); }
.panel.lilac { --bgc: var(--panel-lilac); --glow: rgba(146, 119, 255, 0.24); }
.panel.sage { --bgc: var(--panel-sage); --glow: rgba(63, 214, 160, 0.17); }
.panel.peach { --bgc: var(--panel-peach); --glow: rgba(255, 107, 53, 0.2); }
.panel.sand { --bgc: var(--panel-sand); --glow: rgba(255, 201, 74, 0.18); }
.panel.night { --bgc: #120d22; --glow: rgba(255, 63, 209, 0.22); }
.win { background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.8);
  overflow: hidden; min-width: 0; }
.bar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--raised); }
.dots { display: flex; gap: 6px; } .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.dots i:first-child { background: var(--accent); box-shadow: 0 0 8px rgba(255, 107, 53, 0.7); }
.url { flex: 1; min-width: 0; font: 13px var(--mono); color: var(--fg3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.live { font: 600 12px var(--body); color: var(--ok); display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.win img.full { display: block; width: 100%; height: auto; }
.caption { font-size: 13px; color: var(--fg4); text-align: center; padding: 8px 12px; }

/* hero demo: a mock chat next to the result */
.demo { width: 100%; padding: 56px 48px; display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 28px; align-items: end;
  text-align: left; margin-top: 18px; }
.chat { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px; display: grid; gap: 12px;
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.8); align-self: end; min-height: 360px; align-content: start; }
.chat .who { font: 600 13px var(--body); color: var(--fg1); display: flex; align-items: center; gap: 8px;
  padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.chat .who i { width: 18px; height: 18px; border-radius: 5px; background: linear-gradient(135deg, var(--violet), var(--cyan)); }
.bubble { justify-self: end; max-width: 92%; background: var(--raised); border-radius: 14px 14px 4px 14px; padding: 10px 12px;
  font-size: 14px; color: var(--fg1); }
.steps { display: grid; gap: 7px; font: 12.5px var(--mono); color: var(--fg3); }
.steps div { display: flex; gap: 8px; align-items: baseline; }
.steps .ok { color: var(--ok); } .steps .bad { color: var(--danger); }
.reply { font-size: 14px; color: var(--fg1); }
.js .demo-anim .steps div, .js .demo-anim .reply { opacity: 0; transform: translateY(4px); transition: opacity .3s, transform .3s; }
.js .demo-anim .steps div.on, .js .demo-anim .reply.on { opacity: 1; transform: none; }
.result { display: grid; gap: 14px; min-width: 0; }
.result .row2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.42fr); gap: 14px; align-items: end; }

/* split sections */
.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 64px; align-items: center; }
.split.flip { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
.split.flip > :first-child { order: 2; }
.split h2 { font-size: clamp(34px, 4.4vw, 54px); line-height: 1.05; }
.split .copy { display: grid; gap: 18px; align-content: center; }
.split .copy p { font-size: 19px; color: var(--fg3); max-width: 30em; }
.split .copy p.small { font-size: 16px; }
.split .panel { padding: 40px; min-height: 420px; display: grid; align-items: center; justify-items: center; gap: 16px; }
.split .panel > * { justify-self: stretch; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.pill2 { font: 500 13px var(--body); background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; color: var(--fg2); }
a.pill2 { text-decoration: none; } a.pill2:hover { color: var(--fg1); border-color: var(--line-strong); }
.toolcard .body { padding: 16px; display: grid; gap: 12px; }
.call { font: 12.5px var(--mono); background: var(--raised); border-left: 3px solid var(--accent); border-radius: 8px; padding: 8px 10px;
  color: var(--fg2); overflow-wrap: anywhere; }
.call b { color: var(--ok); font-weight: 500; }
.flow { display: grid; gap: 8px; width: 100%; }
.flow .f { display: flex; align-items: center; gap: 10px; background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 12px; font: 12.5px var(--mono); color: var(--fg2); box-shadow: 0 12px 28px -16px rgba(0, 0, 0, .7); min-width: 0; }
.flow .f b { font: 600 13px var(--body); color: var(--fg1); white-space: nowrap; }
.flow .f span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.flow .f .to { margin-left: auto; color: var(--ok); white-space: nowrap; }
.flow .f i { width: 10px; height: 10px; border-radius: 3px; flex: none; background: var(--accent); }

/* Steam asset collage */
.assets { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 14px; align-items: start; width: 100%; }
.assets figure { margin: 0; display: grid; gap: 6px; }
.assets img { display: block; width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line); box-shadow: 0 20px 40px -20px rgba(0, 0, 0, .8); }
.assets figcaption { font: 11px var(--mono); color: var(--fg4); }
.assets .stack { display: grid; gap: 14px; }

/* before/after compare (Pro) */
.compare { position: relative; overflow: hidden; --pos: 50%; aspect-ratio: 16 / 9; background: #07060b; }
.compare img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
.compare .after { clip-path: inset(0 0 0 var(--pos)); }
.compare::after { content: ""; position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; background: var(--fg1);
  box-shadow: 0 0 12px rgba(0, 0, 0, .6); pointer-events: none; }
.compare input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; margin: 0; }
.compare .tag { position: absolute; top: 10px; z-index: 1; font: 9px var(--pixel); color: #fffdf8; background: rgba(12, 10, 18, .78);
  border-radius: 6px; padding: 6px 8px; letter-spacing: .06em; pointer-events: none; }
.compare .tag.l { left: 10px; } .compare .tag.r { right: 10px; }

/* section heads, card grid, steps */
.sec-head { display: grid; gap: 14px; max-width: 760px; }
.sec-head h2 { font-size: clamp(34px, 4.4vw, 54px); line-height: 1.05; }
.sec-head p { font-size: 19px; color: var(--fg3); }
.features { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 36px; }
.feat { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 8px 8px 18px; display: grid; gap: 10px; align-content: start; }
.feat .art { border-radius: 12px; height: 120px; display: grid; place-items: center; overflow: hidden; position: relative; }
.feat .art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.feat .art svg { color: var(--fg1); }
.feat h3 { font: 600 16px var(--body); color: var(--fg1); padding-inline: 10px; letter-spacing: 0; }
.feat p { font-size: 14px; color: var(--fg3); padding-inline: 10px; }
.feat p a { color: var(--fg2); }
.chips-art { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; padding: 0 12px; }
.chips-art span { font: 600 11px var(--mono); background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; color: var(--fg2); }
.mini-board { font: 8px var(--pixel); color: var(--fg1); display: grid; gap: 7px; width: 70%; }
.mini-board div { display: flex; justify-content: space-between; }
.bars { display: flex; align-items: end; gap: 7px; height: 70px; }
.bars i { width: 14px; border-radius: 4px 4px 0 0; background: var(--accent); opacity: .85; }
.timeline { list-style: none; margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: step; }
.timeline li { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 22px; display: grid; gap: 8px; align-content: start; counter-increment: step; }
.timeline li::before { content: counter(step, decimal-leading-zero); font: 10px var(--pixel); color: var(--gold); }
.timeline h3 { font: 600 18px var(--body); letter-spacing: 0; }
.timeline p { font-size: 15px; color: var(--fg3); }
.timeline .who { font: 600 12px var(--body); text-transform: uppercase; letter-spacing: .06em; color: var(--fg4); }
.timeline .who.us { color: var(--ok); }

/* spec table */
.spec { width: 100%; border-collapse: collapse; margin-top: 28px; font-size: 15px; }
.spec th, .spec td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { font: 600 12px var(--body); text-transform: uppercase; letter-spacing: .06em; color: var(--fg4); }
.spec td:first-child { color: var(--fg1); font-weight: 600; }
.spec td { color: var(--fg3); }
.spec td.mono { font: 13px var(--mono); color: var(--fg2); white-space: nowrap; }
.table-scroll { overflow-x: auto; }

/* honest notes */
.notes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 36px; }
.note-card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 22px; display: grid; gap: 8px; align-content: start; }
.note-card h3 { font: 600 17px var(--body); letter-spacing: 0; }
.note-card p { font-size: 15px; color: var(--fg3); }

/* reading list */
.reads { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 36px; }
.read { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 8px 8px 18px; display: grid; gap: 10px;
  align-content: start; text-decoration: none; color: inherit; transition: border-color .12s; }
.read:hover { border-color: var(--line-strong); }
.read img { width: 100%; aspect-ratio: 40 / 21; object-fit: cover; border-radius: 12px; display: block; }
.read b { font: 600 16px/1.35 var(--body); color: var(--fg1); padding-inline: 10px; }
.read span { font-size: 14px; color: var(--fg3); padding-inline: 10px; }

/* faq */
.faqs { display: grid; grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr); gap: 48px; align-items: start; }
.faqs h2 { font-size: clamp(36px, 4.6vw, 58px); line-height: 1.02; }
.faq { display: grid; gap: 12px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 22px; }
.faq summary { cursor: pointer; list-style: none; font-weight: 600; color: var(--fg1); display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 22px var(--body); color: var(--fg4); line-height: 1; }
.faq details[open] summary::after { content: "\00d7"; }
.faq p { margin-top: 12px; color: var(--fg3); }

/* closing call to action */
.final { text-align: center; display: grid; justify-items: center; gap: 18px; padding: 64px 24px; }
.final h2 { font-size: clamp(36px, 5vw, 62px); }
.final p { font-size: 19px; color: var(--fg3); max-width: 34em; }

footer { border-top: 1px solid var(--line); margin-top: 72px; padding-block: 28px 40px; font-size: 14px; color: var(--fg4); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; }
footer a { color: var(--fg3); }
footer .grow { flex: 1 1 320px; }

@media (max-width: 1000px) {
  .demo { grid-template-columns: 1fr; padding: 28px 18px; }
  .chat { min-height: 0; }
  .split, .split.flip, .faqs { grid-template-columns: 1fr; gap: 28px; }
  .split.flip > :first-child { order: 0; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline, .reads { grid-template-columns: 1fr 1fr; }
}
.hero-panel { width: 100%; margin-top: 18px; padding: 40px 48px; }
@media (max-width: 760px) {
  .top nav { gap: 14px; } .top nav .wide { display: none; }
  .top nav .btn { min-height: 38px; padding: 0 12px; font-size: 14px; white-space: nowrap; }
}
@media (max-width: 640px) {
  .wrap { padding-inline: 16px; }
  section.s { padding-block: 64px 0; }
  .hero { padding-block: 28px 0; }
  .hero .sub { font-size: 18px; }
  .split .panel { padding: 18px; min-height: 0; }
  .split .copy p { font-size: 17px; }
  .result .row2, .assets { grid-template-columns: 1fr; }
  .features, .timeline, .reads, .notes { grid-template-columns: 1fr; }
  .final { padding: 44px 18px; }
  .brand { font-size: 20px; }
  .top { gap: 10px; }
  .top nav { gap: 12px; font-size: 14px; }
  .hero-panel { padding: 14px; }
  .compare .tag { display: none; }
  .spec thead { display: none; }
  .spec tr { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .spec td { border: 0; padding: 0; }
  .spec td:nth-child(3) { grid-column: 1 / -1; font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }