/* =========================================================
   De Onde Vem o Nosso Aço — origem e siderúrgicas parceiras
   Reaproveita as variaveis e componentes base de style.css
   (--blue, --accent, .section-label, .section-title, .reveal,
   topbar, nav, footer). Aqui fica so o que e proprio desta
   pagina, hero, rotas do aco, fichas de siderurgica e convite.

   NOTA DE DESIGN
   A pagina foi feita para ficar apresentavel ANTES de as artes
   chegarem. O hero funciona com gradiente puro, e cada logo de
   fornecedor tem um bloco tipografico de reserva que so sai de
   cena quando a imagem real e colocada no lugar.
   ========================================================= */

:root { --fo-ease: cubic-bezier(0.23, 1, 0.32, 1); }

/* ===================== HERO ===================== */
.fo-hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 78% 18%, rgba(30,95,173,0.42), transparent 60%),
    radial-gradient(900px 500px at 12% 82%, rgba(232,160,32,0.14), transparent 62%),
    linear-gradient(160deg, #0B2545 0%, #0d2b52 45%, #071a34 100%);
}

/* Malha sutil de linhas, lembra vergalhao empilhado sem precisar
   de foto. Fica atras do texto e nao concorre com a leitura. */
.fo-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(255,255,255,0.05) 0px,
    rgba(255,255,255,0.05) 1px,
    transparent 1px,
    transparent 22px
  );
  opacity: 0.7;
}

/* Quando a foto real entrar, ela cobre o gradiente e o veu
   escuro abaixo garante contraste do texto por cima. */
.fo-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}
.fo-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,20,38,0.95) 8%, rgba(7,20,38,0.55) 48%, rgba(7,20,38,0.25) 100%);
}

.fo-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 48px 76px;
  width: 100%;
}
.fo-hero-eyebrow {
  display: inline-block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(232,160,32,0.45);
  border-radius: 999px;
  padding: 7px 16px;
  margin-bottom: 22px;
}
.fo-hero h1 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(40px, 6vw, 74px);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--white);
  max-width: 16ch;
}
.fo-hero h1 .hl { color: var(--accent); }
.fo-hero-sub {
  color: rgba(255,255,255,0.82);
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.65;
  max-width: 60ch;
  margin-top: 20px;
}

/* ===================== FAIXA DE FATOS ===================== */
.fo-facts { background: var(--blue); border-top: 1px solid rgba(255,255,255,0.08); }
.fo-facts-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 30px 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
/* Grid de duas faixas por fato. O numero ocupa a faixa flexivel e o
   rotulo fica na faixa de baixo, entao um valor de duas linhas (o
   CA-50 CA-60) nao empurra o proprio rotulo para fora do alinhamento
   dos vizinhos. */
.fo-fact {
  text-align: center;
  color: var(--white);
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 8px;
}
.fo-fact strong {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.05;
  color: var(--accent);
  letter-spacing: 0.02em;
  align-self: center;
}
.fo-fact span {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.66);
  line-height: 1.35;
}

/* ===================== SECOES ===================== */
.fo-section { padding: 88px 48px; }
.fo-section.alt { background: var(--off-white); }
.fo-section.dark { background: var(--blue); }
.fo-head { max-width: 760px; margin: 0 auto 52px; text-align: center; }
.fo-head .section-label { justify-content: center; }
.fo-head p {
  color: var(--gray);
  font-size: 16.5px;
  line-height: 1.7;
  margin-top: 14px;
}
.fo-section.dark .fo-head p { color: rgba(255,255,255,0.72); }

.fo-prose {
  max-width: 760px;
  margin: 0 auto;
  color: var(--text);
  font-size: 16.5px;
  line-height: 1.75;
}
.fo-prose p { margin-bottom: 18px; }
.fo-prose strong { color: var(--blue); font-weight: 600; }

/* ===================== AS DUAS ROTAS ===================== */
.fo-rotas {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.fo-rota {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 30px 30px;
  position: relative;
  overflow: hidden;
}
.fo-rota::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
}
.fo-rota.eletrica::before { background: var(--blue-light); }
.fo-rota-tag {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.fo-rota.eletrica .fo-rota-tag { color: var(--blue-light); }
.fo-rota h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 27px;
  letter-spacing: 0.02em;
  color: var(--blue);
  margin: 8px 0 14px;
  line-height: 1.12;
}
.fo-rota p { color: var(--gray); font-size: 15.5px; line-height: 1.65; }

/* Fluxo do processo, caixinhas encadeadas em HTML puro.
   A seta e um ::after da propria etapa, e nao um elemento solto,
   para nunca sobrar sozinha no comeco de uma linha quebrada. */
.fo-fluxo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 22px 0 20px;
}
.fo-fluxo-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  line-height: 1.25;
}
.fo-fluxo-item span {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 13px;
}
.fo-fluxo-item:not(:last-child)::after {
  content: '\25B8';
  color: var(--gray);
  font-size: 15px;
  line-height: 1;
}

.fo-rota-nota {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 4px;
  font-size: 14.5px;
  color: var(--text);
  line-height: 1.6;
}
.fo-rota-nota strong { color: var(--blue); }

/* ===================== FICHA DA SIDERURGICA ===================== */
.fo-usina {
  max-width: 1080px;
  margin: 0 auto 34px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.fo-usina:last-child { margin-bottom: 0; }

.fo-usina-topo {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  align-items: stretch;
}
.fo-usina-marca {
  background: var(--off-white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 22px;
  text-align: center;
  gap: 8px;
}
.fo-usina-marca img { max-width: 150px; height: auto; }

/* Reserva tipografica, some sozinha quando a logo real entra */
.fo-marca-texto {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 34px;
  letter-spacing: 0.06em;
  color: var(--blue);
  line-height: 1;
}
.fo-marca-sub {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  line-height: 1.35;
}

.fo-usina-info { padding: 30px 32px; }
.fo-usina-info h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 30px;
  letter-spacing: 0.02em;
  color: var(--blue);
  line-height: 1.1;
  margin-bottom: 6px;
}
.fo-usina-local {
  font-size: 13.5px;
  color: var(--gray);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}
.fo-usina-info p { color: var(--text); font-size: 15.5px; line-height: 1.7; }
.fo-usina-info p + p { margin-top: 14px; }

/* Selo de destaque ambiental */
.fo-selo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.32);
  color: #0f7a5a;
  border-radius: 999px;
  padding: 8px 15px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 16px;
}
.fo-selo svg { width: 15px; height: 15px; flex-shrink: 0; }

/* Numeros da usina */
.fo-usina-dados {
  border-top: 1px solid var(--border);
  background: var(--off-white);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.fo-dado {
  padding: 20px 18px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.fo-dado:last-child { border-right: none; }
.fo-dado strong {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 25px;
  color: var(--blue);
  letter-spacing: 0.02em;
  line-height: 1.1;
}
.fo-dado span {
  display: block;
  margin-top: 6px;
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray);
  line-height: 1.4;
}
.fo-fonte {
  padding: 14px 32px 18px;
  font-size: 12.5px;
  color: var(--gray);
  line-height: 1.55;
  border-top: 1px solid var(--border);
}
.fo-fonte a { color: var(--blue-light); text-decoration: underline; }

/* ===================== O QUE MUDA ===================== */
.fo-muda {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.fo-muda-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 26px;
}
.fo-muda-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: rgba(232,160,32,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.fo-muda-icon svg { width: 21px; height: 21px; }
.fo-muda-card h3 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 23px;
  letter-spacing: 0.02em;
  color: var(--blue);
  margin-bottom: 9px;
  line-height: 1.15;
}
.fo-muda-card p { color: var(--gray); font-size: 15px; line-height: 1.65; }

/* ===================== CONVITE A FORNECEDORES ===================== */
.fo-convite {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  color: var(--white);
}
.fo-convite h2 {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: 0.02em;
  line-height: 1.08;
  margin-bottom: 16px;
}
.fo-convite p {
  color: rgba(255,255,255,0.78);
  font-size: 16.5px;
  line-height: 1.7;
  max-width: 62ch;
  margin: 0 auto 14px;
}
.fo-convite-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  background: var(--accent);
  color: #1C2635;
  font-weight: 700;
  font-size: 15px;
  padding: 14px 26px;
  border-radius: 10px;
  transition: transform 0.25s var(--fo-ease), box-shadow 0.25s var(--fo-ease);
}
.fo-convite-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(232,160,32,0.28);
}
.fo-convite-btn svg { width: 17px; height: 17px; }

/* ===================== RESPONSIVO ===================== */
@media (max-width: 900px) {
  .fo-rotas { grid-template-columns: 1fr; }
  .fo-muda { grid-template-columns: 1fr; }
  .fo-usina-topo { grid-template-columns: 1fr; }
  .fo-usina-marca {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 26px 22px;
  }
  .fo-usina-dados { grid-template-columns: repeat(2, 1fr); }
  .fo-dado:nth-child(2) { border-right: none; }
  .fo-dado:nth-child(1), .fo-dado:nth-child(2) { border-bottom: 1px solid var(--border); }
}

@media (max-width: 768px) {
  .fo-hero { min-height: 480px; }
  .fo-hero-inner { padding: 0 22px 54px; }
  .fo-section { padding: 62px 22px; }
  .fo-facts-inner {
    grid-template-columns: repeat(2, 1fr);
    padding: 26px 22px;
    gap: 22px;
  }
  .fo-usina-info { padding: 26px 22px; }
  .fo-fonte { padding: 14px 22px 18px; }
  .fo-head { margin-bottom: 40px; }
  /* Cidade e rota caem em linhas separadas no celular, entao o ponto
     de separacao entre as duas sobraria solto no fim da primeira. */
  .fo-usina-local { flex-direction: column; align-items: flex-start; gap: 4px; }
  .fo-usina-local span:nth-child(2) { display: none; }
}

@media (max-width: 420px) {
  .fo-usina-dados { grid-template-columns: 1fr; }
  .fo-dado { border-right: none; border-bottom: 1px solid var(--border); }
  .fo-dado:last-child { border-bottom: none; }
}