/* openTARS site: estilos comuns a todas as páginas */
@font-face { font-family: "Archivo"; font-style: normal; font-weight: 400 800; font-stretch: 62% 125%; font-display: swap;
  src: url("fonts/archivo-var.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("fonts/plexmono-400.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("fonts/plexmono-500.woff2") format("woff2"); }
:root {
  --hull: #141C38;
  --ink: #E8ECF4;
  --slab: #0D1329;
  --steel: #9AA5BF;
  --rule: #2C3760;
  --signal: #5FD97A;
  --signal-on-slab: #5FD97A;
  --caution: #E7A93B;
  --caution-on-slab: #E7A93B;
  --paper: #18213F;
  --measure: 34rem;
  --wrap: 72rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--hull);
  color: var(--ink);
  font-family: "Archivo", system-ui, sans-serif;
  font-variation-settings: "wdth" 100;
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--signal); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; border-radius: 2px; }
code, kbd, .mono { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .92em; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--wrap), 100% - 2rem); margin-inline: auto; }

/* Wide display type: the TARS slab feel lives here */
.display {
  font-variation-settings: "wdth" 125;
  font-weight: 800;
  letter-spacing: -.025em;
  line-height: .98;
  margin: 0;
}
h2.display { font-size: clamp(2rem, 4.6vw, 3.4rem); max-width: 18ch; }
h3 { font-variation-settings: "wdth" 112; font-weight: 700; font-size: 1.2rem; line-height: 1.25; margin: 0 0 .4rem; }
.lede { font-size: clamp(1.1rem, 1.6vw, 1.3rem); max-width: var(--measure); color: var(--ink); }
.quiet { color: var(--steel); }

/* Header */
.top { padding-block: 1.25rem; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.mark { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 700; font-variation-settings: "wdth" 115; font-size: 1.15rem; }
.mark img { width: 2rem; height: 2rem; }
.top nav { display: flex; gap: 1.5rem; font-size: .98rem; }
.top nav a { text-decoration: none; color: var(--steel); }
.top nav a:hover { color: var(--ink); }
@media (max-width: 40rem) { .top nav .hide-s { display: none; } }

/* Hero */
.hero { padding-block: clamp(2.5rem, 7vw, 6rem) clamp(3rem, 7vw, 6rem); }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
@media (max-width: 60rem) { .hero .wrap { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 5.2rem); }
.hero .lede { margin-top: 1.5rem; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem 1.25rem; align-items: center; margin-top: 2rem; }
.btn {
  display: inline-block; padding: .85rem 1.3rem; border-radius: 6px;
  background: var(--ink); color: var(--hull); text-decoration: none; font-weight: 600;
  font-variation-settings: "wdth" 108;
}
.btn:hover { color: var(--hull); background: var(--signal); }
.link { font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--rule); padding-bottom: 2px; }
.link:hover { border-color: var(--signal); color: var(--ink); }
.term, .model, .cmd, .shot { box-shadow: 0 0 0 1px var(--rule), 0 30px 60px -30px rgba(0, 0, 0, .6); }
.facts { margin-top: 2.25rem; color: var(--steel); font-size: .95rem; max-width: var(--measure); }

/* The transcript: the one moving thing on the page */
.term {
  position: relative;
  background: var(--slab); color: #E8ECF4;
  border-radius: 10px 10px 10px 10px;
  padding: 2.4rem 1.5rem 1.6rem;
  font-family: "IBM Plex Mono", monospace; font-size: clamp(.82rem, 1.1vw, .95rem); line-height: 1.75;
  box-shadow: 0 1px 0 #0e1530, 0 28px 60px -28px rgba(22, 32, 63, .55);
}
/* four slabs from the logo, as the window's grip */
.term::before {
  content: ""; position: absolute; top: .9rem; left: 1.5rem;
  width: 3.1rem; height: .5rem;
  background:
    linear-gradient(#E8ECF4, #E8ECF4) 0 0 / .62rem 100% no-repeat,
    linear-gradient(#E8ECF4, #E8ECF4) .83rem 0 / .62rem 100% no-repeat,
    linear-gradient(#E8ECF4, #E8ECF4) 1.66rem 0 / .62rem 100% no-repeat,
    linear-gradient(#E8ECF4, #E8ECF4) 2.49rem 0 / .62rem 100% no-repeat;
  opacity: .35; border-radius: 1px;
}
.term .line { display: block; white-space: pre-wrap; }
@media (max-width: 30rem) { .term { padding-inline: 1rem; font-size: .74rem; } .term::before { left: 1rem; } }
.term .ask { color: #fff; }
.term .p { color: var(--signal-on-slab); }
.term .dot { color: #fff; }
.term .res { color: #9AA6C2; }
.term .ok { color: var(--signal-on-slab); }
.term .final { color: #fff; margin-top: .9rem; }
.term .cursor { display: inline-block; width: .55em; height: 1.1em; vertical-align: -.2em; background: var(--signal-on-slab); }

@media (prefers-reduced-motion: no-preference) {
  .term.play .line { opacity: 0; animation: show .01s linear forwards; animation-delay: var(--d); }
  .term.play .typed {
    display: inline-block; overflow: hidden; white-space: nowrap; vertical-align: bottom;
    width: 0; animation: type 1.5s steps(var(--n)) .5s forwards;
  }
  .term.play .cursor { animation: blink 1s steps(1) infinite; }
}
@keyframes show { to { opacity: 1; } }
@keyframes type { to { width: calc(var(--n) * 1ch); } }
@keyframes blink { 50% { opacity: 0; } }

/* Sections */
section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.band { background: var(--paper); }
.head { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 4rem; align-items: end; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
@media (max-width: 52rem) { .head { grid-template-columns: 1fr; } }
.head p { margin: 0; max-width: var(--measure); }

/* Requests ledger */
.ledger { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.ledger li {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: .5rem 3rem;
  padding-block: 1.6rem; border-bottom: 1px solid var(--rule);
}
@media (max-width: 52rem) { .ledger li { grid-template-columns: 1fr; } }
.ledger q {
  font-variation-settings: "wdth" 112; font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.65rem); line-height: 1.2; quotes: "“" "”";
}
.ledger p { margin: 0; color: var(--steel); max-width: var(--measure); }
.ledger .stop q { color: var(--caution); }

/* Window showcase */
.show { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr); gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
@media (max-width: 60rem) { .show { grid-template-columns: 1fr; } }
.shot { border-radius: 10px; overflow: hidden; box-shadow: 0 0 0 1px var(--rule), 0 30px 60px -30px rgba(22, 32, 63, .45); background: var(--slab); }
.notes { margin: 0; }
.notes dt { font-weight: 700; font-variation-settings: "wdth" 112; margin-top: 1.5rem; }
.notes dt:first-child { margin-top: 0; }
.notes dd { margin: .25rem 0 0; color: var(--steel); }
.strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin-top: clamp(2rem, 4vw, 3rem); }
@media (max-width: 52rem) { .strip { grid-template-columns: 1fr 1fr; } }
@media (max-width: 34rem) { .strip { grid-template-columns: 1fr; } }
figure { margin: 0; }
figcaption { font-size: .92rem; color: var(--steel); margin-top: .6rem; }

/* Safety */
.safe { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; }
@media (max-width: 60rem) { .safe { grid-template-columns: 1fr; } }
.asks { list-style: none; padding: 0; margin: 1.75rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.asks li { font-family: "IBM Plex Mono", monospace; font-size: .88rem; padding: .3rem .6rem; border: 1px solid var(--caution); color: var(--caution); border-radius: 4px; }

/* Models */
.models { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3rem); }
@media (max-width: 52rem) { .models { grid-template-columns: 1fr; } }
.model { background: var(--slab); color: #E8ECF4; border-radius: 10px; padding: clamp(1.5rem, 3vw, 2.25rem); }
.model h3 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-variation-settings: "wdth" 125; font-weight: 800; letter-spacing: -.02em; margin-bottom: .75rem; }
.model p { color: #B9C2D9; max-width: var(--measure); }
.model dl { display: grid; grid-template-columns: auto 1fr; gap: .5rem 1.25rem; margin: 1.5rem 0 0; padding-top: 1.25rem; border-top: 1px solid #2E3B69; font-size: .95rem; }
.model dt { color: #8F9BB8; }
.model dd { margin: 0; }
.model code { color: var(--signal-on-slab); }

/* Mascot + terminal */
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 52rem) { .pair { grid-template-columns: 1fr; } }
.pair h3 { font-size: 1.5rem; margin-top: 1.5rem; }
.pair p { color: var(--steel); max-width: var(--measure); }
.pair img { border-radius: 8px; box-shadow: 0 0 0 1px var(--rule); }
.pair .cli { width: 100%; max-height: 24rem; object-fit: cover; object-position: top; background: var(--slab); }

/* Install */
.steps { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; gap: 2.25rem; max-width: 52rem; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 3.5rem 1fr; gap: 1rem; }
.steps li::before {
  content: counter(s); font-variation-settings: "wdth" 125; font-weight: 800; font-size: 2.4rem; line-height: 1;
  color: var(--signal);
}
.steps p { margin: .35rem 0 0; color: var(--steel); }
.cmd { display: flex; align-items: stretch; margin-top: .9rem; background: var(--slab); border-radius: 8px; overflow: hidden; }
.cmd pre { margin: 0; padding: 1rem 1.1rem; color: #E8ECF4; font-family: "IBM Plex Mono", monospace; font-size: .88rem; line-height: 1.6; white-space: pre-wrap; word-break: break-all; flex: 1; }
.cmd button {
  flex: none; border: 0; border-left: 1px solid #2E3B69; background: transparent; color: #E8ECF4;
  font: 600 .9rem "Archivo", sans-serif; padding: 0 1.1rem; cursor: pointer; min-width: 5.5rem;
}
.cmd button:hover { background: #263362; }
.cmd button:focus-visible { outline-offset: -4px; outline-color: var(--signal-on-slab); }

/* Next */
.next { columns: 2 22rem; column-gap: 4rem; margin: 0; padding: 0; list-style: none; }
.next li { break-inside: avoid; padding: 1.2rem 0; border-top: 1px solid var(--rule); }
.next p { margin: .2rem 0 0; color: var(--steel); }
.concept-titulo { margin: 3rem 0 .25rem; font-size: 1.4rem; }
.concept { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-top: 1.25rem; }
.concept img { border-radius: 10px; box-shadow: 0 0 0 1px var(--rule), 0 24px 50px -30px rgba(0, 0, 0, .6); }
.concept .largo { grid-column: 1 / -1; max-width: 52rem; }
@media (max-width: 52rem) { .concept { grid-template-columns: 1fr; } }

/* Footer */
footer { background: var(--slab); color: #B9C2D9; padding-block: 3.5rem; font-size: .95rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: end; }
footer .big { font-variation-settings: "wdth" 125; font-weight: 800; font-size: clamp(2.6rem, 8vw, 6rem); letter-spacing: -.03em; line-height: .9; color: #E8ECF4; margin: 0; }
footer nav { display: flex; gap: 1.5rem; flex-wrap: wrap; }
footer a { color: #E8ECF4; }
footer a:hover { color: var(--signal-on-slab); }
footer :focus-visible { outline-color: var(--signal-on-slab); }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hero .roles {
  grid-column: 1 / -1; margin: clamp(1.5rem, 4vw, 3rem) 0 0; padding-top: 1.25rem; border-top: 1px solid var(--rule);
  font-variation-settings: "wdth" 112; font-weight: 600; font-size: clamp(1.1rem, 2vw, 1.45rem); color: var(--ink);
}

/* Demo */
.demo { padding-block: 0 clamp(4rem, 9vw, 7rem); }
.demo-frame { margin: 0; }
.demo-screen, .demo-video {
  aspect-ratio: 16 / 9; width: 100%; border-radius: 10px; background: var(--slab);
  box-shadow: 0 0 0 1px var(--rule), 0 30px 60px -30px rgba(0, 0, 0, .6);
}
.demo-screen { display: grid; place-content: center; gap: .75rem; text-align: center; padding: 1.5rem; }
.demo-say { margin: 0; font-variation-settings: "wdth" 125; font-weight: 800; letter-spacing: -.02em; font-size: clamp(1.6rem, 5vw, 3.6rem); line-height: 1.05; }
.demo-soon { margin: 0; color: var(--steel); }
.demo-frame figcaption { text-align: center; }
.demo-video { display: block; aspect-ratio: 1600 / 850; height: auto; }

/* Segurança */
.layers { list-style: none; margin: 0; padding: 0; display: grid; gap: 2rem; }
.layers li > p { color: var(--steel); margin: 0; max-width: var(--measure); }
.layers h3 { font-size: 1.35rem; }
.layers .asks { margin-top: 1rem; }
.cloud { margin-top: 2rem; padding: 1.5rem; border: 1px solid var(--rule); border-radius: 10px; }
.cloud p { color: var(--steel); margin: 0; }
.safe { align-items: start; }

/* Modelos */
.models { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 60rem) { .models { grid-template-columns: 1fr; } }
.model .role { margin: 0 0 .25rem; color: var(--signal); font-weight: 600; font-variation-settings: "wdth" 112; }
.lite { margin-top: 2rem; color: var(--steel); max-width: 44rem; }
.lite strong { color: var(--ink); }

/* Instalação */
.get { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
@media (max-width: 60rem) { .get { grid-template-columns: 1fr; } }
.btn.big { font-size: 1.25rem; padding: 1.15rem 1.8rem; margin-bottom: 1rem; }
.get .or { margin-top: 2.25rem; }
.get .cmd + p { margin-top: 1.25rem; }
.tested { padding: 1.75rem; background: var(--slab); border-radius: 10px; box-shadow: 0 0 0 1px var(--rule); }
.tested ul { list-style: none; margin: 1rem 0 1.25rem; padding: 0; display: grid; gap: .6rem; }
.tested li { font-weight: 600; font-size: 1.1rem; font-variation-settings: "wdth" 110; }
.tested li::before { content: "✓"; color: var(--signal); margin-right: .7rem; font-weight: 700; }
.tested p { margin: 0; font-size: .95rem; }
.legacy { margin-top: 3rem; border-top: 1px solid var(--rule); padding-top: 1.5rem; max-width: 52rem; }
.legacy summary { cursor: pointer; font-weight: 600; font-variation-settings: "wdth" 110; color: var(--steel); }
.legacy summary:hover, .legacy[open] summary { color: var(--ink); }
.legacy-body { padding-top: 1rem; }
.legacy-body p { max-width: var(--measure); }
.legacy .aviso { color: var(--caution); }
.btn2 { display: inline-block; margin: .5rem 0 0; padding: .7rem 1.1rem; border: 1px solid var(--rule); border-radius: 6px; text-decoration: none; font-weight: 600; }
.btn2:hover { border-color: var(--signal); color: var(--ink); }

/* Dados do pacote ao lado do download */
.pacote { display: flex; flex-wrap: wrap; gap: .5rem 2rem; margin: .25rem 0 1rem; }
.pacote div { display: flex; flex-direction: column; }
.pacote dt { font-size: .82rem; color: var(--steel); }
.pacote dd { margin: 0; font-weight: 600; }
.pacote .sha { flex-basis: 100%; }
.pacote .sha code { font-size: .8rem; font-weight: 400; word-break: break-all; color: var(--steel); }

/* Rodapé e páginas de texto (changelog, privacidade) */
.rodape-marca .contato { margin: 1rem 0 0; }
.texto { padding-block: clamp(3rem, 7vw, 5rem); }
.texto h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
.texto .lede { margin-top: 1.25rem; }
.texto article { max-width: 46rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--rule); }
.texto article h2 { font-size: 1.6rem; margin: 0; font-variation-settings: "wdth" 115; font-weight: 700; }
.texto article .quando { color: var(--steel); margin: .25rem 0 1rem; }
.texto article h3 { margin-top: 1.75rem; }
.texto ul { padding-left: 1.2rem; }
.texto li { margin: .45rem 0; }
.texto li::marker { color: var(--signal); }
.texto p, .texto li { max-width: var(--measure); }
.texto a { color: var(--ink); }

/* ------------------------------------------------------------
   Efeitos de scroll e de mouse (11/10). Todos são decorativos:
   - só rodam sem "reduzir movimento" no sistema;
   - os de scroll usam animation-timeline (Chrome, Edge, Brave, Safari 26); onde não existe, a página fica parada e igual;
   - os de mouse só existem com mouse de verdade (hover: hover e pointer: fine), ligados pelo script de site.js.
   ------------------------------------------------------------ */
.progresso { position: fixed; inset: 0 0 auto 0; height: 2px; background: var(--signal); transform-origin: 0 50%;
  transform: scaleX(0); z-index: 50; pointer-events: none; display: none; }

/* Brilho que segue o cursor nos painéis escuros (as variáveis --mx e --my vêm do site.js) */
.term, .model, .tested, .cloud, .shot, .cmd { position: relative; }
.term::after, .model::after, .tested::after, .cloud::after, .shot::after, .cmd::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(95, 217, 122, .10), transparent 60%);
  transition: opacity .3s ease;
}
.com-mouse .sob-mouse::after { opacity: 1; }

@media (prefers-reduced-motion: no-preference) {
  /* Inclinação 3D leve no terminal do topo e nas capturas (--rx e --ry vêm do site.js) */
  .com-mouse :is(.term, .shot) { transform: perspective(1200px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transition: transform .25s ease-out; will-change: transform; }

  /* Linhas de pedidos: o pedido anda um pouco e a linha acende */
  .ledger li { transition: background-color .25s ease; }
  .ledger q { display: inline-block; transition: transform .25s ease, color .25s ease; }
  .ledger li:hover { background: rgba(232, 236, 244, .03); }
  .ledger li:hover q { transform: translateX(8px); }
  .ledger li:not(.stop):hover q { color: var(--signal); }

  .btn, .btn2, .link { transition: transform .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease; }
  .btn:hover, .btn2:hover { transform: translateY(-2px); }
  .concept img, .strip img { transition: transform .35s ease; }
  .concept figure:hover img, .strip figure:hover img { transform: scale(1.015); }

  @supports (animation-timeline: scroll()) {
    /* Barra de leitura no topo */
    .progresso { display: block; animation: progresso linear both; animation-timeline: scroll(root); }
    /* O título do topo se estreita e apaga um pouco ao rolar: a fonte é variável na largura */
    .hero h1 { animation: titulo-estreita linear both; animation-timeline: scroll(root); animation-range: 0 70vh; }
  }
  @supports ((animation-timeline: view()) and (animation-range: entry)) {
    /* Blocos entram com um deslize curto, uma vez por bloco, enquanto entram na tela */
    .head, .ledger li, .show > *, .strip figure, .layers > li, .model, .pair figure, .steps > li, .get > *,
    .next li, .concept figure, .demo-frame, .safe .shot, .lite, .legacy {
      animation: entra linear both; animation-timeline: view(); animation-range: entry 0% entry 70%;
    }
    /* O "openTARS" gigante do rodapé estica até a largura máxima quando aparece */
    footer .big { animation: estica linear both; animation-timeline: view(); animation-range: entry 0% entry 100%; }  /* é o último bloco: a página acaba quando ele termina de entrar */
  }
}
@keyframes progresso { to { transform: scaleX(1); } }
@keyframes titulo-estreita { to { font-variation-settings: "wdth" 88; opacity: .55; } }
/* "translate" e não "transform": assim a entrada não briga com a inclinação do mouse nas capturas */
@keyframes entra { from { opacity: 0; translate: 0 28px; } to { opacity: 1; translate: none; } }
@keyframes estica { from { font-variation-settings: "wdth" 62; letter-spacing: .02em; } to { font-variation-settings: "wdth" 125; letter-spacing: -.03em; } }

.models.duo { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.5rem; }
@media (max-width: 60rem) { .models.duo { grid-template-columns: 1fr; } }
.model dd code { overflow-wrap: anywhere; }