/* Base do site — Dr. Bruno Cordeiro. Variáveis em 02-conceito/sistema.md */
:root {
  --noite-0: #080b11;
  --noite-1: #0c0f16;
  --noite-2: #121722;
  --noite-3: #1a2030;
  --tela: #05070b;
  --ardosia: #4f5566;
  --ardosia-clara: #8d8f9b;
  --tinta: #eef1f6;
  --tinta-2: #b6bdcb;
  --tinta-3: #8a93a6;
  --arterial: #d6363f;
  --arterial-tinta: #b3262e;
  --arterial-fundo: #8f1d24;
  --doppler-azul: #3b7fd9;
  --quente: #c79f7e;

  --papel: #eef0f3;
  --papel-2: #e5e8ee;
  --papel-3: #d9dde5;
  --nevoa-quente: #efe9e2;
  --grafite: #121722;
  --grafite-2: #3d4456;
  --grafite-3: #5d6476;

  --borda-noite: rgb(160 175 200 / .16);
  --borda-papel: rgb(18 23 34 / .14);

  --f-titulo: "Saira", system-ui, sans-serif;
  --f-mono: "Chivo Mono", ui-monospace, monospace;

  --margem: clamp(20px, 5vw, 80px);
  --largura: 1280px;
  --respiro: clamp(88px, 12vw, 168px);
  --bpm: 0.9677s;
  --foto-h: min(760px, calc(100svh - 104px));

  --t-mini: 12.5px;
  --t-corpo: clamp(18px, .9rem + .35vw, 20px);
  --t-sub: clamp(1.4rem, 1rem + 1vw, 2rem);
  --t-secao: clamp(2.2rem, 1rem + 3.4vw, 4.4rem);
  --curva: cubic-bezier(.2, .7, .2, 1);
}
@media (max-width: 600px) { :root { --t-mini: 14px; } }

*, *::before, *::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
html, body { margin: 0; }
body {
  background: var(--noite-1);
  color: var(--tinta);
  font-family: var(--f-titulo);
  font-variation-settings: "wdth" 100;
  font-size: var(--t-corpo);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
/* granulado único, fixo, por cima da página */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: .055;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1.4 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
a { color: inherit; }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid var(--arterial); outline-offset: 3px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- casca das seções ---------- */
.wf-s { position: relative; isolation: isolate; overflow: clip; padding: var(--respiro) var(--margem); }
.wf-in { max-width: var(--largura); margin: 0 auto; position: relative; }
.wf-noite { background: var(--noite-1); color: var(--tinta); }
.wf-papel { background: var(--papel); color: var(--grafite); }
.wf-papel ::selection { background: rgb(214 54 63 / .2); }

/* malhas prontas (manchas radiais em oklab, sem filter) */
.wf-malha { position: absolute; inset: -10%; z-index: -1; pointer-events: none; animation: wf-deriva 36s ease-in-out infinite alternate; }
.wf-noite .wf-malha {
  background:
    radial-gradient(closest-side at 20% 30% in oklab, rgb(39 58 88 / .7), rgb(39 58 88 / 0)),
    radial-gradient(closest-side at 80% 70% in oklab, rgb(58 66 86 / .55), rgb(58 66 86 / 0)),
    radial-gradient(closest-side at 60% 10% in oklab, rgb(30 37 52 / .9), rgb(30 37 52 / 0)),
    linear-gradient(180deg in oklab, var(--noite-1), var(--noite-0));
}
.wf-papel .wf-malha {
  background:
    radial-gradient(closest-side at 18% 22% in oklab, rgb(255 255 255 / .9), rgb(255 255 255 / 0)),
    radial-gradient(closest-side at 82% 30% in oklab, rgb(239 233 226 / .95), rgb(239 233 226 / 0)),
    radial-gradient(closest-side at 50% 90% in oklab, rgb(217 221 229 / .9), rgb(217 221 229 / 0)),
    linear-gradient(180deg in oklab, var(--papel), var(--papel-2));
}
@keyframes wf-deriva {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-2%, 1.5%, 0) scale(1.04); }
}

/* ---------- componentes ---------- */
/* rótulo técnico (mono) com fio vermelho */
.wf-rotulo {
  margin: 0 0 22px;
  font-family: var(--f-mono); font-size: max(var(--t-mini), 13px); letter-spacing: .14em; text-transform: uppercase;
  display: flex; align-items: center; gap: 14px;
}
.wf-noite .wf-rotulo { color: var(--tinta-3); }
.wf-papel .wf-rotulo { color: var(--grafite-3); }
.wf-rotulo::before { content: ""; width: 34px; height: 1px; background: var(--arterial); flex: none; }

/* título de seção em duas vozes */
.wf-titulo { margin: 0; font-size: var(--t-secao); line-height: 1; letter-spacing: -.012em; font-weight: 400; }
.wf-titulo > span { display: block; }
.wf-leve { font-weight: 260; font-variation-settings: "wdth" 64; letter-spacing: .005em; }
.wf-noite .wf-leve { color: var(--tinta-2); }
.wf-papel .wf-leve { color: var(--grafite-2); }
.wf-forte { font-weight: 640; font-variation-settings: "wdth" 104; }
/* o ponto vermelho do fim do título (pulsa a 62 bpm quando .wf-pulsa) */
.wf-ponto { display: inline-block; width: .17em; height: .17em; margin-left: .07em; border-radius: 50%; background: var(--arterial); vertical-align: baseline; }
.wf-papel .wf-ponto { background: var(--arterial-tinta); }
.wf-pulsa .wf-ponto, .wf-ponto.wf-pulsa { animation: wf-bate var(--bpm) cubic-bezier(.2,.8,.3,1) infinite; }
@keyframes wf-bate { 0% { transform: scale(1.35); box-shadow: 0 0 14px 2px rgb(214 54 63 / .45); } 35%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgb(214 54 63 / 0); } }

.wf-apoio { margin: 24px 0 0; max-width: 36em; font-size: var(--t-corpo); line-height: 1.55; }
.wf-noite .wf-apoio { color: var(--tinta-2); }
.wf-papel .wf-apoio { color: var(--grafite-2); }

/* botões */
.wf-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 54px; padding: 0 28px;
  font-family: var(--f-titulo); font-size: 18px; font-weight: 600; text-decoration: none;
  font-variation-settings: "wdth" 96;
  border-radius: 3px; border: 1px solid transparent;
  transition: background .3s, color .3s, border-color .3s, transform .3s;
}
.wf-noite .wf-btn-cheio { background: var(--tinta); color: #0b0f17; }
.wf-noite .wf-btn-cheio:hover { background: #fff; transform: translateY(-1px); }
.wf-noite .wf-btn-linha { border-color: rgb(238 241 246 / .3); color: var(--tinta); }
.wf-noite .wf-btn-linha:hover { border-color: var(--tinta); }
.wf-papel .wf-btn-cheio { background: var(--grafite); color: var(--papel); }
.wf-papel .wf-btn-cheio:hover { background: #000; transform: translateY(-1px); }
.wf-papel .wf-btn-linha { border-color: rgb(18 23 34 / .3); color: var(--grafite); }
.wf-papel .wf-btn-linha:hover { border-color: var(--grafite); }
.wf-link { text-underline-offset: .3em; text-decoration-thickness: 1px; padding: 12px 0; display: inline-block; }

/* o "laudo": caixa de fala/dado com rótulo mono, texto e assinatura */
.wf-laudo { padding: 16px 20px 18px; border-left: 2px solid var(--arterial); }
.wf-noite .wf-laudo { background: rgb(6 8 13 / .7); border-top: 1px solid var(--borda-noite); border-right: 1px solid var(--borda-noite); border-bottom: 1px solid var(--borda-noite); }
.wf-papel .wf-laudo { background: rgb(255 255 255 / .6); border-top: 1px solid var(--borda-papel); border-right: 1px solid var(--borda-papel); border-bottom: 1px solid var(--borda-papel); border-left-color: var(--arterial-tinta); }
.wf-laudo-cab { margin: 0 0 10px; display: flex; justify-content: space-between; gap: 12px; font-family: var(--f-mono); font-size: var(--t-mini); letter-spacing: .12em; text-transform: uppercase; }
.wf-noite .wf-laudo-cab { color: var(--tinta-3); }
.wf-papel .wf-laudo-cab { color: var(--grafite-3); }
.wf-laudo blockquote { margin: 0; font-size: clamp(19px, 1rem + .4vw, 22px); line-height: 1.35; font-variation-settings: "wdth" 96; }
.wf-laudo-ass { margin: 10px 0 0; font-family: var(--f-mono); font-size: max(var(--t-mini), 13px); }
.wf-laudo-ass::before { content: "— "; }
.wf-noite .wf-laudo-ass { color: var(--tinta-2); }
.wf-papel .wf-laudo-ass { color: var(--grafite-2); }

/* tela de espectro (moldura do aparelho, igual à do hero) */
.wf-tela { position: relative; background: linear-gradient(180deg, #070a10, var(--tela)); border: 1px solid var(--borda-noite); border-radius: 5px; padding: 10px 12px 12px; box-shadow: 0 30px 80px -30px rgb(40 80 140 / .45), inset 0 1px 0 rgb(255 255 255 / .04); }
.wf-tela-topo { display: flex; align-items: center; gap: 18px; padding: 0 2px 8px; font-family: var(--f-mono); font-size: var(--t-mini); letter-spacing: .1em; color: #8f9bb0; text-transform: uppercase; }
.wf-tela-topo > :last-child { margin-left: auto; }
.wf-esp { position: relative; height: 160px; background: var(--tela); border-radius: 2px; overflow: hidden; }
.wf-esp canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
/* versão papel: o espectro impresso no laudo */
.wf-tela.wf-tela-papel { background: #fff; border-color: var(--borda-papel); box-shadow: 0 24px 60px -34px rgb(18 23 34 / .35); }
.wf-tela-papel .wf-tela-topo { color: var(--grafite-3); }
.wf-tela-papel .wf-esp { background: #fbfbfc; }

/* ---------- entrada por rolagem (só com JS) ---------- */
.js [data-rev] { opacity: 0; transform: translateY(16px); transition: opacity .9s var(--curva), transform .9s var(--curva); transition-delay: calc(var(--d, 0) * 130ms); }
.js [data-rev].wf-visto { opacity: 1; transform: none; }
.js [data-rev="varre"] { transform: none; clip-path: inset(0 100% -12% 0); transition: opacity .2s, clip-path 1.1s cubic-bezier(.65, 0, .25, 1); transition-delay: calc(var(--d, 0) * 130ms); }
.js [data-rev="varre"].wf-visto { clip-path: inset(0 0 -12% 0); }

/* ---------- botão flutuante (celular) ---------- */
.wf-flutua {
  position: fixed; z-index: 40; right: 16px; bottom: 16px;
  width: 56px; height: 56px; border-radius: 50%;
  display: none; align-items: center; justify-content: center;
  background: var(--tinta); color: #0b0f17; text-decoration: none;
  box-shadow: 0 12px 30px -10px rgb(0 0 0 / .6), 0 0 0 1px rgb(255 255 255 / .2);
  opacity: 0; transform: translateY(12px); transition: opacity .4s, transform .4s;
}
.wf-flutua svg { width: 26px; height: 26px; fill: currentColor; }
.wf-flutua i { position: absolute; top: 6px; right: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--arterial); animation: wf-bate var(--bpm) cubic-bezier(.2,.8,.3,1) infinite; }
.wf-flutua.wf-mostra { opacity: 1; transform: none; }
@media (max-width: 980px) { .wf-flutua { display: flex; } }