/* QuackBot · versão 3 · Fábrica de patos
   Só token semântico do design system. Hex só na cena 3D (scene.js) e no pôster gerado dela.
   Modos: html.is-live (maquete 3D), html.is-static e html.no-js (pôster + batidas empilhadas).
   Todo estado escondido mora sob .is-live; sem JS a página está inteira. */

#top-sentinel { position: absolute; top: 0; left: 0; width: 1px; height: 24px; pointer-events: none; }
html { -webkit-tap-highlight-color: transparent; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
button, a, [role="tab"], summary { touch-action: manipulation; }

/* ── Layout básico ── */
.row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-3); }
.stack { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--sp-6); align-content: start; min-width: 0; }
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(32px, 6vw, 96px); align-items: center; }
.split--top { align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }
.note { margin: 0; }
.menu__cta { margin-top: var(--sp-4); width: 100%; }

/* ════════ Filme: palco sticky + batidas no fluxo ════════ */
.film { position: relative; }
.stage {
  position: sticky; top: 0; z-index: 0;
  height: 100vh; height: 100svh;
  overflow: hidden; container-type: size;
  background:
    radial-gradient(56% 62% at 66% 50%, var(--surface-2) 0%, color-mix(in srgb, var(--surface-2) 30%, var(--bg)) 46%, var(--bg) 78%),
    var(--bg);
}

/* Pôster: o quadro 0 da maquete, desenhado em SVG com a mesma projeção da câmera (scene.js, ?poster=dump).
   --k = pixels por unidade do mundo; --ax/--ay = onde o alvo da câmera cai no palco. Iguais a KF[0] em scene.js. */
.poster {
  position: absolute; inset: 0;
  --k: min(calc(100cqh / 27), calc(100cqw / 43.2));
  --ax: 69%; --ay: 54%;
}
.poster__art {
  position: absolute; max-width: none; overflow: visible;
  left: calc(var(--ax) + var(--vbx) * var(--k));
  top: calc(var(--ay) + var(--vby) * var(--k));
  width: calc(var(--vbw) * var(--k));
  height: calc(var(--vbh) * var(--k));
}
.scene {
  position: absolute; inset: 0; display: block; width: 100%; height: 100%;
  opacity: 0; transition: opacity var(--dur-hero) var(--ease-out);
  touch-action: pan-y;
}
.scene-ready .scene { opacity: 1; }
.scene-ready .poster { visibility: hidden; transition: visibility 0s linear var(--dur-hero); }
.poster-deep .poster { opacity: 0; transition: opacity 300ms ease; }

.scrim {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--bg) 84%, transparent) 0%, color-mix(in srgb, var(--bg) 46%, transparent) 32%, transparent 54%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg) 70%, transparent) 0, transparent 16%, transparent 82%, color-mix(in srgb, var(--bg) 72%, transparent) 100%);
}

/* Rótulos projetados das estações (decorativos; o texto real está nos cartões) */
.labels { position: absolute; inset: 0; pointer-events: none; }
.tag {
  position: absolute; left: 0; top: 0;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 10px; border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--bg) 80%, transparent); border: 1px solid var(--line-2);
  font: 500 var(--fs-2xs) / 1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-2); white-space: nowrap;
  opacity: 0; will-change: transform, opacity;
}
.tag i { width: 6px; height: 6px; border-radius: 50%; background: var(--text-3); }
.tag--plan i { background: var(--mode-plan); }
.tag--code i { background: var(--mode-code); }
.tag--wait i { background: var(--waiting); }

/* Pausa (WCAG 2.2.2): congela o tempo do ambiente; o scroll continua dirigindo a história */
.pause {
  position: absolute; z-index: 3;
  right: var(--gutter); bottom: calc(24px + env(safe-area-inset-bottom));
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px 0 14px;
  border-radius: var(--r-pill); border: 1px solid var(--line-2);
  background: color-mix(in srgb, var(--bg) 82%, transparent); color: var(--text-2);
  font: 500 var(--fs-eyebrow) / 1 var(--font-mono); letter-spacing: 0.04em;
  cursor: pointer; user-select: none; -webkit-user-select: none;
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  transition: color var(--dur-hover) ease, border-color var(--dur-hover) ease, background-color var(--dur-hover) ease, transform var(--dur-press) var(--ease-out);
}
.pause .icon { width: 16px; height: 16px; }
.pause__i-play { display: none; }
.pause[aria-pressed="true"] { color: var(--accent-text); border-color: var(--accent-line); }
.pause[aria-pressed="true"] .pause__i-play { display: block; }
.pause[aria-pressed="true"] .pause__i-pause { display: none; }
.pause:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .pause:hover { color: var(--text); border-color: var(--line-2); background: var(--surface-2); } }

/* Batidas: uma <article> por estação, em ordem de leitura */
.beats { position: relative; z-index: 2; margin-top: -100vh; margin-top: -100svh; pointer-events: none; }
.beat {
  --len: 1.1;
  min-height: calc(var(--len) * 100vh); min-height: calc(var(--len) * 100svh);
  display: flex; align-items: center;
  padding-block: calc(var(--nav-h) + 16px) 40px;
}
.beat[data-beat="6"] { --len: 1.3; }
.beat__wrap { display: flex; }
.beat__card {
  pointer-events: auto; position: relative;
  width: min(100%, 500px); display: grid; gap: var(--sp-4); align-content: start;
  padding: var(--sp-8); border-radius: var(--r-lg);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border: 1px solid var(--line); border-top-color: var(--line-2);
  box-shadow: var(--shadow-3);
  -webkit-backdrop-filter: blur(14px) saturate(140%); backdrop-filter: blur(14px) saturate(140%);
}
.beat__card:focus-within { opacity: 1 !important; pointer-events: auto !important; }
.beat__card:focus { outline: none; }
.beat__card:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }
.beat__kicker {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: 0;
  font: 500 var(--fs-eyebrow) / 1 var(--font-mono); letter-spacing: var(--ls-eyebrow); text-transform: uppercase; color: var(--text-3);
}
.beat__kicker .chip { text-transform: none; letter-spacing: 0.04em; }
.beat__num { color: var(--accent-text); }
.beat__title {
  margin: 0; font-family: var(--font-display); font-weight: 700; color: var(--text);
  font-size: calc(var(--fs-h3) * 1.32); line-height: 1.05; letter-spacing: var(--ls-h2);
  text-wrap: balance; font-variation-settings: "opsz" 36;
}
.beat__title em { font-style: normal; color: var(--accent-text); }
.beat__text { margin: 0; color: var(--text-2); text-wrap: pretty; }
.beat__quote {
  display: flex; align-items: center; gap: 10px; margin: 0; padding: 12px 14px;
  border-radius: var(--r-md); border: 1px solid var(--line-2); background: var(--surface);
  color: var(--text-3); font-size: var(--fs-small);
}
.beat__quote .icon { width: 16px; height: 16px; }
.beat__still { display: none; }

/* Modos dentro da batida 3 */
.modes { margin: 0; display: grid; gap: var(--sp-3); }
.modes__row { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: var(--sp-3); align-items: start; }
.modes dt { margin: 0; }
.modes dd { margin: 0; color: var(--text-2); font-size: var(--fs-small); line-height: var(--lh-ui); }
.modes q { color: var(--text); quotes: "“" "”"; }

/* Pergunta da batida 4 */
.window--mini { box-shadow: none; }
.window--mini .window__body { padding: 14px; }
.window--mini .ask, .window--mini .msg ~ .msg { margin-left: 0; }
.ask-done { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.ask-done p { margin: 0; color: var(--text-2); font-size: var(--fs-small); }
.ask__opt:disabled { opacity: 0.5; cursor: default; }
.ask__opt:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.secret--card, .summary--card { margin-left: 0; }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-2); }
.ticks li { position: relative; padding-left: 22px; color: var(--text-2); font-size: var(--fs-small); line-height: var(--lh-ui); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.5em; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }

/* Hero (batida 0) */
.beat--hero { --len: 1; padding-top: calc(var(--nav-h) + 24px); }
.hero { pointer-events: auto; max-width: min(600px, 47vw); display: grid; gap: var(--sp-6); justify-items: start; }
.hero .lede { max-width: 50ch; }
.row--chips { gap: var(--sp-2); }
.hero__hint {
  display: flex; align-items: center; gap: 12px; margin: var(--sp-2) 0 0;
  font: 500 var(--fs-eyebrow) / 1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3);
}
.hero__cue { position: relative; width: 1px; height: 34px; background: var(--line-2); overflow: hidden; }
.hero__cue::after { content: ""; position: absolute; left: -1px; top: 0; width: 3px; height: 10px; border-radius: 2px; background: var(--accent); }
@media (prefers-reduced-motion: no-preference) {
  .is-live .hero__cue::after { animation: cue 1.8s var(--ease-in-out) 3; } /* 5,4 s e para; segue a pausa */
}
@keyframes cue { from { transform: translateY(-10px); } to { transform: translateY(34px); } }
.motion-paused .hero__cue::after { animation-play-state: paused; }
@media not all and (hover: hover) { .hero__poke { display: none; } }
html:not(.is-live) .hero__hint { display: none; }
@media (max-aspect-ratio: 9/10) { .hero__hint { display: none; } }

/* Foco nunca cai em conteúdo ainda não revelado: o reveal termina na hora */
.is-live .rv:focus-within, .is-live .rv:focus { opacity: 1; transform: none; transition: none; }
.is-live .rv-clip:focus-within { clip-path: none; transition: none; }

.beats__heading { margin: 0; }
.is-live .beats__heading { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Saída do filme: a próxima seção sobe por cima, sem corte seco */
.is-live .section--after-film {
  position: relative; z-index: 3;
  margin-top: -32svh; padding-top: calc(32svh + var(--sec-y));
  background: linear-gradient(180deg, transparent 0, var(--bg) 32svh);
}

/* ── Retrato: maquete no terço de cima, cartão na base ── */
@media (max-aspect-ratio: 9/10) {
  .stage { background: radial-gradient(90% 46% at 50% 24%, var(--surface-2) 0%, color-mix(in srgb, var(--surface-2) 30%, var(--bg)) 52%, var(--bg) 84%), var(--bg); }
  .poster { --k: calc(100cqw / 31); --ax: 50%; --ay: 20%; }
  .scrim { background: linear-gradient(0deg, color-mix(in srgb, var(--bg) 94%, transparent) 0%, color-mix(in srgb, var(--bg) 60%, transparent) 34%, transparent 58%), linear-gradient(180deg, color-mix(in srgb, var(--bg) 70%, transparent) 0, transparent 14%); }
  .labels { display: none; }
  .pause { top: calc(var(--nav-h) + env(safe-area-inset-top) + 8px); bottom: auto; width: 44px; padding: 0; justify-content: center; }
  .pause__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .beat { --len: 1; align-items: flex-end; padding: 0 0 calc(84px + env(safe-area-inset-bottom)); }
  .beat[data-beat="6"] { --len: 1.2; }
  .beat__card {
    width: 100%; max-height: 52svh; overflow: auto; overscroll-behavior: contain;
    padding: var(--sp-5); gap: var(--sp-3);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
  }
  .beat--hero { align-items: flex-start; padding: 34svh 0 calc(88px + env(safe-area-inset-bottom)); }
  .hero { max-width: none; gap: var(--sp-4); }
  .hero__title { font-size: clamp(2.25rem, 1.4rem + 4vw, 3.25rem); }
  .modes__row { grid-template-columns: minmax(0, 1fr); gap: 6px; }
}
@media (max-aspect-ratio: 9/10) and (max-height: 740px) {
  .beat--hero { padding-top: 34svh; }
}

/* ── Estático e sem JS: pôster no lugar da cena, batidas em grade, tudo visível ── */
html:not(.is-live) .stage { position: absolute; inset: 0 0 auto 0; }
html:not(.is-live) .scene, html:not(.is-live) .labels, html:not(.is-live) .pause { display: none; }
html:not(.is-live) .beats { margin-top: 0; pointer-events: auto; }
html:not(.is-live) .beat--hero { min-height: 100vh; min-height: 100svh; }
html:not(.is-live) .beats__rest {
  width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-6);
  padding-top: var(--sec-y);
}
html:not(.is-live) .beats__heading { grid-column: 1 / -1; }
html:not(.is-live) .beats__rest .beat { min-height: 0; padding: 0; display: block; }
html:not(.is-live) .beats__rest .beat__wrap { width: auto; height: 100%; display: block; }
html:not(.is-live) .beat__card { width: 100%; height: 100%; opacity: 1 !important; background: var(--surface); -webkit-backdrop-filter: none; backdrop-filter: none; box-shadow: var(--shadow-1); max-height: none; overflow: visible; }
html:not(.is-live) .beat__still {
  display: block; aspect-ratio: 16 / 7; border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--line);
  background: radial-gradient(70% 90% at 50% 50%, var(--surface-2), var(--bg) 80%);
}
html:not(.is-live) .beat__still svg { width: 100%; height: 100%; max-width: none; }
@media (max-width: 900px) { html:not(.is-live) .beats__rest { grid-template-columns: minmax(0, 1fr); } }

/* ════════ Seções depois do filme ════════ */
.section--tight { padding-block: clamp(40px, 5vw, 72px); }
.stack--visual { gap: var(--sp-4); }

.facts { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-5); }
.facts li { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: var(--sp-4); align-items: start; }
.facts p { margin: 4px 0 0; color: var(--text-2); text-wrap: pretty; }
.facts__icon, .feat-icon {
  width: 44px; height: 44px; border-radius: var(--r-sm); display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-text); border: 1px solid var(--accent-line);
}
.facts__title { margin: 0; font: 600 1.0625rem / 1.3 var(--font-text); color: var(--text); letter-spacing: -0.01em; }

.inbox { gap: 8px; }
.inbox__group { margin: 8px 0 0; font: 500 var(--fs-2xs) / 1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); }
.inbox__group:first-child { margin-top: 0; }
.inbox__item {
  display: grid; grid-template-columns: 8px minmax(0, auto) minmax(0, 1fr); gap: 12px; align-items: center;
  padding: 12px 14px; border-radius: var(--r-md); background: var(--surface-2); border: 1px solid var(--line);
}
.inbox__item--wait { border-color: color-mix(in srgb, var(--waiting) 40%, transparent); }
.inbox__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--waiting); }
.inbox__dot--plan { background: var(--mode-plan); }
.inbox__dot--code { background: var(--mode-code); }
.inbox__name { font: 500 var(--fs-mono) / 1.3 var(--font-mono); color: var(--text); }
.inbox__note { color: var(--text-2); font-size: var(--fs-small); text-align: right; overflow-wrap: anywhere; }
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4); align-items: stretch; }
.pair .toast { max-width: none; }
.empty { padding: 14px 16px; border-radius: var(--r-md); border: 1px dashed var(--line-2); }
.empty__title { margin: 0; font-weight: 600; }
.empty__text { margin: 4px 0 0; color: var(--text-3); font-size: var(--fs-small); }
@media (max-width: 520px) { .pair { grid-template-columns: minmax(0, 1fr); } .inbox__item { grid-template-columns: 8px minmax(0, 1fr); } .inbox__note { grid-column: 2; text-align: left; } }

.conecta { display: grid; gap: var(--sp-5); justify-items: center; text-align: center; }
.wordmarks { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 36px; }
.wordmarks li { font: 600 clamp(1.0625rem, 1rem + 0.5vw, 1.375rem) / 1.2 var(--font-display); letter-spacing: -0.02em; color: var(--text-3); }
.wordmarks span { font: 400 var(--fs-small) / 1 var(--font-text); letter-spacing: 0; }

.card--plain { display: grid; gap: var(--sp-3); }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips .chip { white-space: normal; min-height: 28px; line-height: 1.2; padding-block: 5px; }
.code__tablist { display: flex; gap: 4px; }
.preinst { margin: 0 0 var(--sp-3); }

.tree { gap: 6px; font-family: var(--font-mono); font-size: var(--fs-mono); }
.tree__row { margin: 0; color: var(--text-2); }
.tree__row--dir { color: var(--text); }
.tree__row--dir::before { content: "▸ "; color: var(--accent-text); }
.tree__row--in { padding-left: 18px; color: var(--text-3); }
.decision { margin: 4px 0 4px 18px; padding: 14px 16px; border-radius: var(--r-md); border-left: 3px solid var(--accent); background: var(--surface-2); display: grid; gap: 6px; font-family: var(--font-text); }
.decision__title { margin: 0; font-weight: 600; color: var(--text); font-size: var(--fs-small); }
.decision__row { margin: 0; font-size: var(--fs-small); color: var(--text-2); display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 8px; }
.decision__row span { font: 500 var(--fs-2xs) / 1.7 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); }

.features { list-style: none; margin: var(--sp-4) 0 0; padding: 0; }
.features > li { display: grid; gap: var(--sp-3); align-content: start; }
.features .card__title { margin-top: var(--sp-2); }
.also { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-4); color: var(--text-2); }
.also strong { color: var(--text); }
@media (max-width: 760px) { .also { grid-template-columns: minmax(0, 1fr); } }

.studio { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-3); }
.studio__step { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: var(--sp-4); align-items: start; padding: var(--sp-5); border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.studio__step p { margin: 4px 0 0; color: var(--text-2); }
.studio__n { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; border: 1px solid var(--accent-line); color: var(--accent-text); font: 600 1rem / 1 var(--font-mono); }

.section--light { background: var(--bg); color: var(--text); }
.gov { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: clip; }
.gov li { background: var(--surface); padding: var(--sp-6); color: var(--text-2); display: grid; gap: 4px; min-width: 0; }
.gov span { font: 700 var(--fs-h3) / 1.15 var(--font-display); letter-spacing: var(--ls-h3); color: var(--text); overflow-wrap: anywhere; }
@media (max-width: 420px) { .gov { grid-template-columns: minmax(0, 1fr); } }

.faq-wrap { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
@media (max-width: 900px) { .faq-wrap { grid-template-columns: minmax(0, 1fr); } }
.faq { display: grid; border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  min-height: 64px; padding: var(--sp-3) 0; cursor: pointer;
  font: 600 1.0625rem / 1.35 var(--font-text); color: var(--text);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary .icon { color: var(--text-3); transition: transform var(--dur-panel) var(--ease-out); }
.faq__item[open] summary .icon { transform: rotate(180deg); }
.faq__item summary:focus-visible { outline-offset: 2px; }
@media (hover: hover) and (pointer: fine) { .faq__item summary:hover .icon { color: var(--text); } }
.faq__a { padding: 0 0 var(--sp-5); color: var(--text-2); }
.faq__a p { margin: 0; max-width: 60ch; }
.faq__a a { color: var(--accent-text); }
@supports (interpolate-size: allow-keywords) {
  .faq { interpolate-size: allow-keywords; }
  .faq__item::details-content { block-size: 0; overflow: clip; transition: block-size var(--dur-menu-in) var(--ease-out), content-visibility var(--dur-menu-in) allow-discrete; }
  .faq__item[open]::details-content { block-size: auto; }
  @media (prefers-reduced-motion: reduce) { .faq__item::details-content { transition: none; } }
}

/* CTA final + contato */
.cta {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 480px); gap: clamp(32px, 5vw, 80px); align-items: start;
  padding: clamp(28px, 5vw, 72px); border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); overflow: clip;
}
@media (max-width: 960px) { .cta { grid-template-columns: minmax(0, 1fr); } }
.cta__copy { display: grid; gap: var(--sp-6); align-content: start; }
.cta__title { font-size: clamp(2.25rem, 1.4rem + 3.6vw, 4.5rem); max-width: 14ch; }
.cta__duck { position: relative; height: clamp(180px, 22vw, 300px); }
.cta__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity var(--dur-hero) var(--ease-out); }
.cta__duck[data-ready] .cta__canvas { opacity: 1; }
html:not(.is-live) .cta__duck { display: none; }
.form, .form-done {
  display: grid; gap: var(--sp-5); padding: clamp(20px, 3vw, 32px);
  border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line-2);
}
.input--area { min-height: 132px; padding: 14px 16px; resize: vertical; line-height: 1.5; }
.form__submit { width: 100%; }
.form__error { margin: 0; font-size: 0.875rem; line-height: 1.5; color: var(--danger); overflow-wrap: anywhere; }
.form__error a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.form__error[hidden], .form__status[hidden] { display: none; }
.form__status { margin: 0; }
.form-done h3:focus { outline: none; }
.form-done h3:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }
.form-done .body { margin: 0; }

/* Rodapé */
.footer { padding-bottom: calc(96px + env(safe-area-inset-bottom)); } /* espaço para a barra de versões */
.footer__top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: var(--sp-6); }
.footer__brand { display: grid; gap: var(--sp-3); max-width: 36ch; }
.footer__brand .small { margin: 0; }
@media (hover: hover) and (pointer: fine) { .footer__links a:hover { color: var(--text); background: color-mix(in srgb, var(--text) 6%, transparent); } }

/* WhatsApp flutuante (como em amazing.lat). O verde é a marca do WhatsApp, não do QuackBot: fica só aqui.
   Abaixo do nav e do menu móvel; pressionar só muda a cor. */
.wa-float {
  --wa: #25d366; --wa-2: #1ebe5b;
  position: fixed; z-index: calc(var(--z-nav) - 1);
  right: var(--gutter); bottom: calc(24px + env(safe-area-inset-bottom));
  width: 56px; height: 56px; display: grid; place-items: center;
  border-radius: 50%; background: var(--wa); box-shadow: var(--shadow-2);
  -webkit-tap-highlight-color: transparent;
  transition: background-color var(--dur-hover) ease;
}
.wa-float svg { width: 30px; height: 30px; fill: #fff; display: block; }
.wa-float:active { background: var(--wa-2); }
.wa-float:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
@media (hover: hover) and (pointer: fine) { .wa-float:hover { background: var(--wa-2); } }
@media (max-width: 600px) {
  .wa-float { right: 16px; bottom: calc(16px + env(safe-area-inset-bottom)); width: 52px; height: 52px; }
  .wa-float svg { width: 26px; height: 26px; }
}
/* paisagem: a pausa da cena divide o canto de baixo; fica à esquerda do botão */
@media not all and (max-aspect-ratio: 9/10) { .pause { right: calc(var(--gutter) + 56px + 12px); } }
@media print { .wa-float { display: none; } }

/* Mascote: o hit cobre o pato; foco visível no botão */
.mascot__hit:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }

/* Preferências do sistema */
@media (prefers-reduced-transparency: reduce) {
  .beat__card, .pause, .tag { background: var(--surface); -webkit-backdrop-filter: none; backdrop-filter: none; }
}

/* "Quack!" sobre o pato clicado na maquete (decorativo) */
.pop {
  position: absolute; left: 0; top: 0; padding: 8px 12px; border-radius: var(--r-md) var(--r-md) var(--r-md) 4px;
  background: var(--accent); color: var(--accent-ink); font: 700 1rem / 1 var(--font-display); letter-spacing: -0.02em;
  opacity: 0; pointer-events: none; white-space: nowrap; will-change: transform, opacity;
}
@media (max-width: 520px) { .code pre { white-space: pre-wrap; overflow-wrap: anywhere; } }