/* ============================================================
   SHIDRAU CAST — Flanges Industriais
   Arquivo: /flanges/css/style.css
   Autor: equipe front-end SHIDRAU CAST

   Sumário
   01. Tokens
   02. Reset e base
   03. Tipografia e utilitários de seção
   04. Botões
   05. Navbar
   06. Hero
   07. Diferenciais
   08. Cards de tipos
   09. Tabela comparativa
   10. Materiais
   11. Normas
   12. Classes de pressão (trilho)
   13. Faces
   14. Aplicações
   15. FAQ
   16. CTA
   17. Formulário
   18. Rodapé
   19. Flutuantes
   20. Modal
   21. Scroll reveal
   22. Responsivo
   23. Preferências de movimento e impressão
   ============================================================ */


/* ============================================================
   01. TOKENS
   Paleta derivada do azul institucional SHIDRAU CAST, com
   acento âmbar de metal aquecido para pontos de ação.
   ============================================================ */
:root {
  /* Cor */
  --ink:        #04091a;   /* azul-aço quase preto — fundos densos */
  --ink-2:      #0f1f4a;   /* azul profundo — superfícies escuras */
  --blue:       #dc1f1f;   /* azul institucional — marca */
  --blue-600:   #b91c1c;   /* azul claro — hover e detalhes */
  --amber:      #f59e0b;   /* acento — ação e destaque */
  --amber-600:  #fbbf24;
  --mist:       #f8fafc;   /* fundo alternado */
  --paper:      #FFFFFF;
  --line:       #e2e8f0;   /* traço fino */
  --line-dark:  rgba(255,255,255,.14);
  --text:       #334155;   /* corpo de texto */
  --text-soft:  #64748b;   /* apoio */
  --text-light: #94a3b8;   /* corpo sobre fundo escuro */

  /* Tipografia */
  --font-display: "Manrope", "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Forma */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 22px;

  /* Sombra: suave, difusa, com tom azul (nunca cinza puro) */
  --sh-1: 0 1px 2px rgba(4,9,26,.05), 0 4px 14px rgba(4,9,26,.05);
  --sh-2: 0 2px 6px rgba(4,9,26,.06), 0 18px 40px rgba(4,9,26,.10);
  --sh-3: 0 30px 70px rgba(4,9,26,.18);

  /* Ritmo */
  --gap-sec: clamp(72px, 9vw, 128px);
  --ease: cubic-bezier(.22, .61, .36, 1);
}


/* ============================================================
   02. RESET E BASE
   ============================================================ */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; }

/* Foco visível e consistente em todo o site (acessibilidade) */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 2000;
  background: var(--amber);
  color: #04091a;
  padding: 12px 20px;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; color: #fff; }

.ico { width: 1.25em; height: 1.25em; flex: none; }

.mono {
  font-family: var(--font-mono);
  font-size: .82em;
  letter-spacing: -.01em;
}


/* ============================================================
   03. TIPOGRAFIA E UTILITÁRIOS DE SEÇÃO
   ============================================================ */
.sc-section { padding-block: var(--gap-sec); }
.sc-section--tight { padding-block: clamp(56px, 6vw, 84px); }
.sc-section--mist { background: var(--mist); }
.sc-section--dark { background: var(--ink); }

.sc-head { max-width: 58ch; margin-bottom: clamp(36px, 4vw, 56px); }

/* Eyebrow em mono: fala a língua de folha de dados, não de marketing */
.sc-eyebrow {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.sc-eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--amber);
  flex: none;
}
.sc-eyebrow--light { color: #8FB6E4; }

.sc-h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  line-height: 1.08;
  letter-spacing: -.025em;
  color: var(--ink);
  margin: 0 0 16px;
}
.sc-h2--light { color: #fff; }

.sc-lead {
  font-size: 1.06rem;
  color: var(--text-soft);
  margin: 0;
  max-width: 62ch;
}
.sc-lead--light { color: var(--text-light); }

.sc-note {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-soft);
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
}
.sc-note--light { color: #8FA6BF; border-left-color: var(--line-dark); }


/* ============================================================
   04. BOTÕES
   ============================================================ */
.btn {
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: 100px;
  padding: 12px 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px solid transparent;
  transition: transform .18s var(--ease), background-color .18s var(--ease),
              color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.btn-lg { padding: 15px 32px; font-size: 1.02rem; }
.btn-sm { padding: 8px 18px; font-size: .9rem; }

.btn-sc-primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}
.btn-sc-primary:hover,
.btn-sc-primary:focus-visible {
  background: var(--blue-600);
  border-color: var(--blue-600);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(220,31,31,.34);
}

.btn-sc-accent {
  background: var(--amber);
  border-color: var(--amber);
  color: #04091a;
}
.btn-sc-accent:hover,
.btn-sc-accent:focus-visible {
  background: var(--amber-600);
  border-color: var(--amber-600);
  color: #04091a;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(245,158,11,.36);
}

.btn-sc-ghost {
  background: transparent;
  border-color: rgba(255,255,255,.55);
  color: #fff;
}
.btn-sc-ghost:hover,
.btn-sc-ghost:focus-visible {
  background: #fff;
  border-color: #fff;
  color: var(--ink);
  transform: translateY(-2px);
}

.btn-sc-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-sc-outline:hover,
.btn-sc-outline:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(220,31,31,.05);
}


/* ============================================================
   05. NAVBAR
   ============================================================ */
.sc-nav {
  background: rgba(4,9,26,.0);
  padding-block: 18px;
  transition: background-color .3s var(--ease), padding .3s var(--ease), box-shadow .3s var(--ease);
}
/* Estado sólido aplicado por JS após rolagem */
.sc-nav.is-solid {
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  padding-block: 10px;
  box-shadow: 0 1px 0 var(--line), 0 8px 30px rgba(4,9,26,.07);
}

.sc-brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
}

.sc-brand__img {
  height: 44px;
  width: auto;
  display: block;
  transition: opacity .3s var(--ease), transform .5s var(--ease);
}
.sc-brand:hover .sc-brand__img { transform: translateY(-1px); }

/* Duas versoes empilhadas: a nav fica branca ao rolar, a logo clara sumiria */
.sc-brand__img--escuro {
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  pointer-events: none;
}
.sc-nav.is-solid .sc-brand__img--claro  { opacity: 0; }
.sc-nav.is-solid .sc-brand__img--escuro { opacity: 1; }
.sc-brand:hover .sc-brand__img--escuro { transform: translateY(calc(-50% - 1px)); }


.sc-nav .nav-link {
  color: rgba(255,255,255,.9);
  font-weight: 500;
  font-size: .94rem;
  padding: 8px 14px;
  position: relative;
}
.sc-nav.is-solid .nav-link { color: var(--text); }

/* Sublinhado que cresce do centro — micro-interação discreta */
.sc-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transition: transform .25s var(--ease);
}
.sc-nav .nav-link:hover::after,
.sc-nav .nav-link:focus-visible::after,
.sc-nav .nav-link.is-active::after { transform: scaleX(1); }
.sc-nav .nav-link.is-active { color: #fff; }
.sc-nav.is-solid .nav-link.is-active { color: var(--ink); font-weight: 600; }

/* Toggler próprio */
.sc-toggler {
  border: 0;
  padding: 8px;
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: transparent;
}
.sc-toggler:focus { box-shadow: none; }
.sc-toggler__bar {
  display: block;
  height: 2px;
  width: 26px;
  background: #fff;
  transition: transform .3s var(--ease), opacity .2s var(--ease), background-color .3s var(--ease);
}
.sc-nav.is-solid .sc-toggler__bar { background: var(--ink); }
.sc-toggler[aria-expanded="true"] .sc-toggler__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.sc-toggler[aria-expanded="true"] .sc-toggler__bar:nth-child(2) { opacity: 0; }
.sc-toggler[aria-expanded="true"] .sc-toggler__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Barra de progresso de leitura */
.sc-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--amber);
  transition: width .1s linear;
}


/* ============================================================
   06. HERO
   ============================================================ */
.sc-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: 140px 72px;
  overflow: hidden;
  background: var(--ink);
}

.sc-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* leve dessaturação para o azul da marca dominar a imagem */
  filter: saturate(.7) contrast(1.05);
}

/* Overlay escuro em duas camadas: vinheta + rampa lateral para leitura do texto */
.sc-hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(4,9,26,.94) 0%, rgba(4,9,26,.82) 42%, rgba(4,9,26,.42) 100%),
    radial-gradient(120% 90% at 80% 20%, rgba(185,28,28,.28) 0%, transparent 60%);
}

/* Malha de desenho técnico — o vernáculo do produto, não decoração */
.sc-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
  -webkit-mask-image: linear-gradient(90deg, #000 0%, transparent 70%);
}

.sc-hero__inner { position: relative; z-index: 2; }

.sc-crumbs { margin-bottom: 26px; }
.sc-crumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.sc-crumbs li { color: rgba(255,255,255,.55); }
.sc-crumbs li + li::before { content: "/"; margin-right: 8px; color: rgba(255,255,255,.3); }
.sc-crumbs a { color: rgba(255,255,255,.72); text-decoration: none; }
.sc-crumbs a:hover { color: var(--amber-600); }
.sc-crumbs [aria-current] { color: #fff; }

.sc-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 9.5vw, 7.5rem);
  line-height: .88;
  letter-spacing: -.045em;
  color: #fff;
  text-transform: uppercase;
  margin: 0 0 22px;
  max-width: 12ch;
}

.sc-hero__sub {
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  color: var(--text-light);
  max-width: 46ch;
  margin: 0 0 34px;
}

.sc-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
}

/* Ficha rápida do hero: lista de definição real, como cabeçalho de folha de dados */
.sc-spec {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--r);
  overflow: hidden;
  max-width: 780px;
  margin: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.sc-spec > div {
  background: rgba(4,9,26,.5);
  padding: 18px 20px;
}
.sc-spec dt {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #8FB6E4;
  font-weight: 500;
  margin-bottom: 4px;
}
.sc-spec dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  color: #fff;
  letter-spacing: -.01em;
}


/* ============================================================
   07. DIFERENCIAIS
   ============================================================ */
.sc-diff {
  height: 100%;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--paper);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.sc-diff:hover {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: var(--sh-2);
}
.sc-diff__ico {
  width: 34px;
  height: 34px;
  color: var(--blue);
  margin-bottom: 16px;
  transition: color .25s var(--ease), transform .25s var(--ease);
}
.sc-diff:hover .sc-diff__ico { color: var(--amber); transform: translateY(-2px); }
.sc-diff h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.sc-diff p { font-size: .92rem; color: var(--text-soft); margin: 0; }


/* ============================================================
   08. CARDS DE TIPOS
   ============================================================ */
.sc-type {
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.sc-type:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--sh-2);
}

.sc-type__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--ink-2);
}
.sc-type__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease), filter .4s var(--ease);
  filter: saturate(.75);
}
.sc-type:hover .sc-type__media img { transform: scale(1.06); filter: saturate(1); }

/* Código do tipo sobre a imagem — identifica a peça como no almoxarifado */
.sc-type__tag {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: #fff;
  background: rgba(4,9,26,.82);
  border: 1px solid rgba(255,255,255,.2);
  padding: 5px 10px;
  border-radius: 100px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.sc-type__body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}
.sc-type__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 4px;
}
.sc-type__alias {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--text-soft);
  margin: 0 0 12px;
}
.sc-type__desc { font-size: .93rem; color: var(--text-soft); margin: 0 0 16px; }

.sc-type__apps {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.sc-type__apps li {
  font-size: .74rem;
  font-weight: 500;
  color: var(--blue);
  background: rgba(220,31,31,.08);
  border-radius: 100px;
  padding: 4px 11px;
}

.sc-type__more {
  margin-top: auto;
  align-self: flex-start;
  background: none;
  border: 0;
  padding: 0;
  color: var(--ink);
  font-weight: 600;
  font-size: .93rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: color .2s var(--ease), gap .2s var(--ease);
}
.sc-type__more .ico { transition: transform .25s var(--ease); }
.sc-type__more:hover { color: var(--amber); gap: 12px; }
.sc-type__more:hover .ico { transform: translateX(2px); }


/* ============================================================
   09. TABELA COMPARATIVA
   ============================================================ */
.sc-table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--sh-1);
}
.sc-table-scroll { -webkit-overflow-scrolling: touch; }

.sc-table { margin: 0; min-width: 900px; }
.sc-table thead th {
  background: var(--ink);
  color: #fff;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 16px 18px;
  border: 0;
  white-space: nowrap;
  position: sticky;
  top: 0;
}
.sc-table tbody th {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
  font-size: .98rem;
  white-space: nowrap;
}
.sc-table tbody th,
.sc-table tbody td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  font-size: .9rem;
  color: var(--text-soft);
  vertical-align: top;
  background: transparent;
}
.sc-table tbody tr:last-child th,
.sc-table tbody tr:last-child td { border-bottom: 0; }
.sc-table tbody tr { transition: background-color .2s var(--ease); }
.sc-table tbody tr:hover { background: var(--mist); }
.sc-table tbody td .mono { color: var(--blue); font-weight: 500; }


/* ============================================================
   10. MATERIAIS
   ============================================================ */
.sc-mat {
  height: 100%;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 22px;
  position: relative;
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
/* Filete âmbar que corre na borda superior ao passar o mouse */
.sc-mat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 100%;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.sc-mat:hover::before { transform: scaleX(1); }
.sc-mat:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: var(--sh-2);
}

.sc-mat__code {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--blue);
  margin: 0 0 6px;
}
.sc-mat__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 0 0 10px;
}
.sc-mat__desc { font-size: .88rem; color: var(--text-soft); margin: 0 0 16px; }

.sc-mat__data {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 6px;
}
.sc-mat__data > div { display: flex; justify-content: space-between; gap: 10px; }
.sc-mat__data dt {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-soft);
  font-weight: 500;
}
.sc-mat__data dd {
  margin: 0;
  font-size: .78rem;
  font-weight: 600;
  color: var(--ink);
  text-align: right;
}


/* ============================================================
   11. NORMAS
   ============================================================ */
.sc-norm {
  height: 100%;
  padding: 24px 22px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--mist);
  transition: transform .25s var(--ease), background-color .25s var(--ease),
              color .25s var(--ease), box-shadow .25s var(--ease);
}
.sc-norm:hover {
  transform: translateY(-4px);
  background: var(--ink);
  border-color: var(--ink);
  box-shadow: var(--sh-2);
}
.sc-norm__code {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 4px;
  transition: color .25s var(--ease);
}
.sc-norm__scope {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .04em;
  color: var(--blue);
  margin: 0 0 12px;
  transition: color .25s var(--ease);
}
.sc-norm p:last-child { font-size: .88rem; color: var(--text-soft); margin: 0; transition: color .25s var(--ease); }
.sc-norm:hover .sc-norm__code { color: #fff; }
.sc-norm:hover .sc-norm__scope { color: var(--amber-600); }
.sc-norm:hover p:last-child { color: var(--text-light); }


/* ============================================================
   12. CLASSES DE PRESSÃO — trilho horizontal (elemento assinatura)
   O trilho lê como uma escala de instrumento: a marca cresce
   com a classe e o painel abre a leitura em bar/psi.
   ============================================================ */
.sc-rail { position: relative; }

.sc-rail__line {
  position: absolute;
  left: 0;
  right: 0;
  top: 68px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,.05), rgba(255,255,255,.28), rgba(255,255,255,.05));
}

.sc-rail__track {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
  position: relative;
  z-index: 2;
  margin-bottom: 34px;
}

.sc-class {
  background: none;
  border: 0;
  padding: 0 0 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-light);
  transition: color .25s var(--ease);
}
/* Haste vertical: altura proporcional à classe (dado, não enfeite) */
.sc-class__stem {
  width: 2px;
  background: rgba(255,255,255,.22);
  border-radius: 2px;
  transition: background-color .25s var(--ease), transform .25s var(--ease);
  transform-origin: bottom;
}
.sc-class__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.4);
  background: var(--ink);
  transition: all .25s var(--ease);
  flex: none;
}
.sc-class__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -.01em;
  transition: color .25s var(--ease);
}
.sc-class__psi {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .06em;
  color: #6E88A5;
  transition: color .25s var(--ease);
}

.sc-class:hover .sc-class__dot { border-color: var(--amber-600); transform: scale(1.15); }
.sc-class:hover .sc-class__stem { background: rgba(251,191,36,.5); }

.sc-class.is-active .sc-class__dot {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 6px rgba(245,158,11,.22);
}
.sc-class.is-active .sc-class__stem { background: var(--amber); }
.sc-class.is-active .sc-class__label { color: #fff; }
.sc-class.is-active .sc-class__psi { color: var(--amber-600); }

.sc-rail__panel {
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.015));
  padding: clamp(24px, 3vw, 38px);
}
.sc-panel__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
}
.sc-panel__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -.03em;
  color: #fff;
  margin: 0 0 12px;
}
.sc-panel__text { color: var(--text-light); font-size: .98rem; margin: 0 0 18px; }
.sc-panel__use {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sc-panel__use li {
  font-size: .78rem;
  color: #cfe0f3;
  border: 1px solid var(--line-dark);
  border-radius: 100px;
  padding: 5px 12px;
}

/* Leitura de pressão-temperatura em tabela mono */
.sc-pt {
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  overflow: hidden;
}
.sc-pt__h {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #8FB6E4;
  padding: 10px 16px;
  background: rgba(255,255,255,.05);
  margin: 0;
  border-bottom: 1px solid var(--line-dark);
}
.sc-pt__row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-dark);
}
.sc-pt__row:last-child { border-bottom: 0; }
.sc-pt__row span:first-child { font-family: var(--font-mono); font-size: .8rem; color: #9FB3C8; }
.sc-pt__row span:last-child { font-family: var(--font-display); font-weight: 700; color: #fff; font-size: .92rem; }


/* ============================================================
   13. FACES
   ============================================================ */
.sc-face {
  height: 100%;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.sc-face:hover {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: var(--sh-2);
}

/* Corte esquemático: vive na mesma linguagem do desenho de fabricação */
.sc-face__viz {
  background: var(--mist);
  border-radius: var(--r);
  margin-bottom: 20px;
  padding: 8px;
}
.sc-face__viz svg { width: 100%; height: auto; display: block; }
.v-body { fill: #C9D6E4; stroke: var(--ink); stroke-width: 1.5; }
.v-face { fill: var(--ink-2); }
.v-gask { fill: var(--amber); }
.v-ring { fill: var(--amber); stroke: var(--ink); stroke-width: 1.2; }
.v-lead { stroke: var(--text-soft); stroke-width: 1; stroke-dasharray: 3 3; }
.v-txt { font-family: "IBM Plex Mono", monospace; font-size: 9px; fill: #64748b; }

.sc-face__abbr {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--amber);
  margin: 0 0 2px;
}
.sc-face__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.16rem;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 12px;
}
.sc-face p { font-size: .92rem; color: var(--text-soft); }

.sc-face__list {
  list-style: none;
  padding: 18px 0 0;
  margin: 18px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
}
.sc-face__list li {
  font-size: .84rem;
  color: var(--text-soft);
  padding-left: 18px;
  position: relative;
}
.sc-face__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 2px;
  background: var(--blue);
}
.sc-face__list strong { color: var(--ink); font-weight: 600; }


/* ============================================================
   14. APLICAÇÕES
   ============================================================ */
.sc-app {
  position: relative;
  border-radius: var(--r);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  display: block;
  background: var(--ink);
}
.sc-app img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.55) brightness(.82);
  transition: transform .6s var(--ease), filter .4s var(--ease);
}
.sc-app:hover img { transform: scale(1.07); filter: saturate(1) brightness(.92); }

.sc-app__cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 18px;
  background: linear-gradient(0deg, rgba(4,9,26,.92) 10%, rgba(4,9,26,.55) 60%, transparent 100%);
  color: #fff;
}
.sc-app__cap h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.04rem;
  letter-spacing: -.015em;
  margin: 0 0 2px;
}
/* Especificação típica do segmento: aparece na entrada, some sem hover no desktop */
.sc-app__cap p {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--amber-600);
  margin: 0;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity .3s var(--ease), max-height .3s var(--ease);
}
.sc-app:hover .sc-app__cap p,
.sc-app:focus-within .sc-app__cap p { opacity: 1; max-height: 40px; }


/* ============================================================
   15. FAQ
   ============================================================ */
.sc-faq__aside { position: sticky; top: 110px; }
.sc-faq__aside .btn { margin-top: 22px; }

.sc-acc .accordion-item {
  border: 1px solid var(--line);
  border-radius: var(--r) !important;
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--paper);
  transition: box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.sc-acc .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: transparent;
  box-shadow: var(--sh-2);
}
.sc-acc .accordion-button {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -.01em;
  color: var(--ink);
  background: transparent;
  padding: 20px 22px;
  box-shadow: none;
}
.sc-acc .accordion-button:not(.collapsed) { color: var(--blue); background: transparent; }
.sc-acc .accordion-button:focus { box-shadow: none; }
.sc-acc .accordion-button::after {
  background-image: none;
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--amber);
  width: auto;
  height: auto;
  transition: transform .3s var(--ease);
}
.sc-acc .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
.sc-acc .accordion-body {
  padding: 0 22px 22px;
  font-size: .93rem;
  color: var(--text-soft);
}


/* ============================================================
   16. CTA
   ============================================================ */
.sc-cta {
  position: relative;
  background: linear-gradient(115deg, var(--blue) 0%, var(--ink-2) 62%, var(--ink) 100%);
  padding-block: clamp(64px, 8vw, 104px);
  overflow: hidden;
  text-align: center;
}
.sc-cta__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(80% 80% at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(80% 80% at 50% 50%, #000, transparent 75%);
}
.sc-cta__inner { position: relative; z-index: 2; }
.sc-cta__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -.035em;
  color: #fff;
  margin: 0 0 14px;
}
.sc-cta__sub {
  color: var(--text-light);
  max-width: 58ch;
  margin: 0 auto 32px;
  font-size: 1.04rem;
}
.sc-cta__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }


/* ============================================================
   17. FORMULÁRIO
   ============================================================ */
.sc-contact {
  list-style: none;
  padding: 26px 0 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
}
.sc-contact li { display: flex; gap: 14px; align-items: flex-start; font-size: .93rem; color: var(--text-soft); }
.sc-contact .ico { color: var(--blue); margin-top: 3px; width: 20px; height: 20px; }
.sc-contact a { color: var(--ink); font-weight: 600; text-decoration: none; }
.sc-contact .ico--wa { color: #25d366; }
.sc-contact__tag {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  background: #25d366;
  color: #04091a;
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  vertical-align: middle;
}
.sc-contact a:hover { color: var(--amber); }

.sc-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3vw, 36px);
  box-shadow: var(--sh-1);
}
.sc-form .form-label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--text-soft);
  margin-bottom: 6px;
}
.sc-form .form-label span { color: var(--amber); }
.sc-form .form-control,
.sc-form .form-select {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font-size: .95rem;
  color: var(--ink);
  background-color: var(--mist);
  transition: border-color .2s var(--ease), background-color .2s var(--ease), box-shadow .2s var(--ease);
}
.sc-form .form-control:focus,
.sc-form .form-select:focus {
  border-color: var(--blue);
  background-color: var(--paper);
  box-shadow: 0 0 0 4px rgba(220,31,31,.12);
}
.sc-form .form-control.is-invalid,
.sc-form .form-select.is-invalid {
  border-color: #C0341B;
  background-color: #FDF3F1;
}
.sc-form .form-text { font-size: .78rem; color: var(--text-soft); }

.sc-err { font-size: .78rem; color: #C0341B; margin: 6px 0 0; font-weight: 500; }

.sc-form__note {
  font-size: .78rem;
  color: var(--text-soft);
  text-align: center;
  margin: 14px 0 0;
}

.sc-form__status {
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: var(--r-sm);
  font-size: .92rem;
  font-weight: 500;
}
.sc-form__status.is-ok { background: #EAF6EE; color: #16603A; border: 1px solid #B7E0C6; }
.sc-form__status.is-err { background: #FDF3F1; color: #962912; border: 1px solid #F2C4B9; }


/* ============================================================
   18. RODAPÉ
   ============================================================ */
.sc-footer {
  background: var(--ink);
  color: var(--text-light);
  padding-block: clamp(56px, 6vw, 84px) 28px;
}
.sc-brand--footer { color: #fff; margin-bottom: 18px; }
.sc-footer__about { font-size: .9rem; color: #8FA6BF; margin: 0 0 20px; max-width: 42ch; }

.sc-footer__h {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #8FB6E4;
  margin: 0 0 16px;
  font-weight: 500;
}
.sc-footer__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.sc-footer__list a,
.sc-footer__addr a {
  color: var(--text-light);
  text-decoration: none;
  font-size: .9rem;
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}
.sc-footer__list a:hover { color: var(--amber-600); padding-left: 4px; }
.sc-footer__addr { font-style: normal; font-size: .9rem; color: #8FA6BF; }
.sc-footer__addr p { margin: 0 0 14px; }
.sc-footer__addr a { font-weight: 600; color: #fff; }
.sc-footer__addr a:hover { color: var(--amber-600); }
.sc-footer__hours { font-family: var(--font-mono); font-size: .76rem; }
.sc-footer .btn { margin-top: 4px; }

.sc-social { list-style: none; padding: 0; margin: 0; display: flex; gap: 10px; }
.sc-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-dark);
  display: grid;
  place-items: center;
  color: var(--text-light);
  transition: all .25s var(--ease);
}
.sc-social a:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: #04091a;
  transform: translateY(-3px);
}

.sc-footer__bar {
  margin-top: clamp(36px, 4vw, 56px);
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
}
.sc-footer__bar p { margin: 0; font-size: .82rem; color: #718AA5; }
.sc-footer__bar ul { list-style: none; display: flex; gap: 20px; padding: 0; margin: 0; }
.sc-footer__bar a { color: #718AA5; text-decoration: none; font-size: .82rem; }
.sc-footer__bar a:hover { color: var(--amber-600); }


/* ============================================================
   19. FLUTUANTES
   ============================================================ */
.sc-wa {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 1040;
  background: #1FA855;
  color: #fff;
  border-radius: 100px;
  height: 58px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(31,168,85,.4);
  transition: transform .25s var(--ease), background-color .25s var(--ease);
}
.sc-wa .ico { width: 26px; height: 26px; }
.sc-wa:hover { transform: translateY(-3px); background: #17924A; color: #fff; }
.sc-wa__label { font-size: .95rem; white-space: nowrap; }

.sc-top {
  position: fixed;
  right: 20px;
  bottom: 90px;
  z-index: 1040;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  display: grid;
  place-items: center;
  box-shadow: var(--sh-2);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .25s var(--ease), transform .25s var(--ease), background-color .25s var(--ease), color .25s var(--ease);
}
.sc-top.is-on { opacity: 1; transform: translateY(0); }
.sc-top:hover { background: var(--ink); color: #fff; border-color: var(--ink); }


/* ============================================================
   20. MODAL
   ============================================================ */
.sc-modal .modal-content {
  border: 0;
  border-radius: var(--r-lg);
  box-shadow: var(--sh-3);
  overflow: hidden;
}
.sc-modal .modal-header {
  border-bottom: 1px solid var(--line);
  padding: 24px 26px;
  align-items: flex-start;
}
.sc-modal__eyebrow {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 4px;
}
.sc-modal__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: -.03em;
  color: var(--ink);
  margin: 0;
}
.sc-modal .modal-body { padding: 26px; }
.sc-modal .modal-footer { border-top: 1px solid var(--line); padding: 18px 26px; }

.sc-modal__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--r);
  margin-bottom: 22px;
  filter: saturate(.8);
}
.sc-modal__text { font-size: .96rem; color: var(--text-soft); }

.sc-modal__specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  margin: 22px 0;
}
.sc-modal__specs > div { background: var(--paper); padding: 14px 16px; }
.sc-modal__specs dt {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-soft);
  font-weight: 500;
  margin-bottom: 3px;
}
.sc-modal__specs dd { margin: 0; font-size: .88rem; font-weight: 600; color: var(--ink); }

.sc-modal__h {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 22px 0 10px;
}
.sc-modal__list { padding-left: 18px; margin: 0; font-size: .92rem; color: var(--text-soft); }
.sc-modal__list li { margin-bottom: 7px; }
.sc-modal__list li::marker { color: var(--amber); }


/* ============================================================
   21. SCROLL REVEAL
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: none; }


/* ============================================================
   22. RESPONSIVO
   ============================================================ */
@media (max-width: 991.98px) {
  /* Menu colapsado como painel sólido */
  .sc-nav .navbar-collapse {
    background: var(--paper);
    border-radius: var(--r);
    margin-top: 14px;
    padding: 12px;
    box-shadow: var(--sh-2);
  }
  .sc-nav .nav-link,
  .sc-nav.is-solid .nav-link { color: var(--ink); padding: 12px 14px; }
  .sc-nav .nav-link::after { left: 14px; right: auto; width: 26px; }
  .sc-nav .navbar-collapse .btn { width: 100%; margin-top: 8px; }

  .sc-hero { min-height: auto; padding-block: 120px 64px; }
  .sc-spec { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .sc-panel__grid { grid-template-columns: 1fr; }
  .sc-faq__aside { position: static; }
}

@media (max-width: 767.98px) {
  .sc-hero__actions .btn { width: 100%; }
  .sc-cta__actions .btn { width: 100%; }

  /* Trilho de classes vira rolagem horizontal com scroll snap */
  .sc-rail__line { display: none; }
  .sc-rail__track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 22px;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
  }
  .sc-class { scroll-snap-align: center; flex: 0 0 84px; }

  .sc-modal__specs { grid-template-columns: 1fr; }

  /* Flutuantes compactos: só o ícone do WhatsApp */
  .sc-wa { height: 54px; width: 54px; padding: 0; justify-content: center; right: 16px; bottom: 16px; }
  .sc-wa__label { display: none; }
  .sc-top { right: 16px; bottom: 82px; }

  /* No toque não existe hover: a especificação fica sempre visível */
  .sc-app__cap p { opacity: 1; max-height: 40px; }
}

@media (max-width: 575.98px) {
  .sc-spec { grid-template-columns: 1fr; }
  .sc-face__abbr { font-size: 2rem; }
}


/* ============================================================
   23. PREFERÊNCIAS DE MOVIMENTO E IMPRESSÃO
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .sc-nav, .sc-wa, .sc-top, .sc-hero__bg, .sc-cta { display: none !important; }
  body { color: #000; }
  [data-reveal] { opacity: 1; transform: none; }
  .sc-section { padding-block: 24px; page-break-inside: avoid; }
}