:root {
  --preto-suave: #0f1115;
  --grafite: #1d1d1f;
  --cinza-texto: #6e6e73;
  --cinza-claro: #f5f5f7;
  --cinza-borda: #d2d2d7;
  --branco: #ffffff;
  --azul-tech: #0071e3;
  --verde-quimica: #2fbf71;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--grafite);
  background: var(--branco);
  line-height: 1.6;
}

/* HEADER */

.cabecalho {
  position: fixed;
  top: 0;
  width: 100%;
  height: 88px;
  padding: 0 8%;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.logo { display: flex; align-items: center; }

.logo img {
  height: 120px;
  width: auto;
  display: block;
}

.menu a {
  color: var(--grafite);
  text-decoration: none;
  margin-left: 24px;
  font-size: 14px;
  font-weight: 500;
  transition: 0.3s;
}

.menu a:hover { color: var(--azul-tech); }

.botao-tema {
  margin-left: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px;
  color: var(--grafite);
  transition: 0.3s;
  opacity: 0.75;
}

.botao-tema:hover {
  opacity: 1;
  transform: translateY(-1px) scale(1.08);
}

/* HERO */

.hero {
  position: relative;
  min-height: 88vh;
  padding: 150px 8% 90px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 50px;
  align-items: center;
  overflow: hidden;

  background:
    radial-gradient(circle at 20% 20%, rgba(0, 113, 227, 0.14), transparent 28%),
    radial-gradient(circle at 85% 30%, rgba(47, 191, 113, 0.12), transparent 26%),
    linear-gradient(135deg, #f5f5f7 0%, #ffffff 45%, #eef6ff 100%);
}

.hero-glow {
  position: absolute;
  width: 520px;
  height: 520px;
  right: -120px;
  top: 120px;
  background: radial-gradient(circle, rgba(0,113,227,0.16), transparent 65%);
  border-radius: 50%;
  z-index: 0;
}

.hero-particulas {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(0,113,227,0.20) 1px, transparent 1px),
    radial-gradient(circle, rgba(47,191,113,0.16) 1px, transparent 1px);
  background-size: 90px 90px, 140px 140px;
  background-position: 0 0, 40px 60px;
  opacity: 0.45;
  z-index: 0;
}

.hero-texto,
.hero-card {
  position: relative;
  z-index: 1;
}

/* HERO CARD */

.hero-card {
  background: var(--branco);
  border-radius: 32px;
  padding: 38px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--cinza-borda);
}

.hero-card h3 {
  color: var(--verde-quimica);
  font-size: 15px;
  margin-bottom: 12px;
}

.hero-card h2 {
  font-size: 32px;
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero-card p { color: var(--cinza-texto); }

.produto-destaque {
  position: relative;
  overflow: hidden;
}

.selo {
  display: inline-block;
  margin-bottom: 24px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(0, 113, 227, 0.10);
  color: var(--azul-tech);
  font-size: 13px;
  font-weight: 700;
}

.produto-visual {
  width: 180px;
  height: 180px;
  margin: 0 auto 28px;
  position: relative;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.95), transparent 18%),
    radial-gradient(circle at center, rgba(0, 113, 227, 0.14), transparent 58%),
    var(--cinza-claro);
}

.frasco {
  position: absolute;
  width: 62px;
  height: 105px;
  left: 58px;
  top: 38px;
  border: 3px solid var(--azul-tech);
  border-radius: 18px 18px 24px 24px;
  background: rgba(255, 255, 255, 0.55);
}

.frasco::before {
  content: "";
  position: absolute;
  width: 30px;
  height: 22px;
  left: 13px;
  top: -24px;
  border: 3px solid var(--azul-tech);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
}

.frasco::after {
  content: "";
  position: absolute;
  width: 42px;
  height: 34px;
  left: 7px;
  bottom: 9px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(47, 191, 113, 0.85), rgba(0, 113, 227, 0.75));
}

.gota {
  position: absolute;
  width: 24px;
  height: 24px;
  right: 48px;
  top: 55px;
  background: var(--verde-quimica);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
}

.anel {
  position: absolute;
  width: 150px;
  height: 150px;
  left: 15px;
  top: 15px;
  border: 1px solid rgba(0, 113, 227, 0.18);
  border-radius: 50%;
}

.beneficios {
  list-style: none;
  margin: 24px 0;
  display: grid;
  gap: 10px;
}

.beneficios li {
  color: var(--cinza-texto);
  font-size: 15px;
}

.beneficios li::before {
  content: "✓";
  color: var(--verde-quimica);
  font-weight: 800;
  margin-right: 8px;
}

.link-card {
  display: inline-block;
  color: var(--azul-tech);
  text-decoration: none;
  font-weight: 700;
}

.link-card:hover { text-decoration: underline; }

/* CARROSSEL */

.chem-carrossel {
  position: relative;
  height: 420px;
  margin: 70px 8%;
  border-radius: 28px;
  overflow: hidden;
  background: var(--grafite);
}

.chem-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.chem-slide.chem-ativo {
  opacity: 1;
  z-index: 1;
}

.chem-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.chem-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0.18));
}

.chem-slide-content {
  position: absolute;
  top: 50%;
  left: 7%;
  transform: translateY(-50%);
  max-width: 560px;
  color: #ffffff;
  z-index: 2;
}

.chem-slide-content h2 {
  font-size: 42px;
  line-height: 1.08;
  margin-bottom: 16px;
  color: #ffffff;
}

.chem-slide-content p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.88);
}

.chem-indicadores {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  z-index: 3;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.chem-indicador {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
}

.chem-indicador.chem-ativo { background: #ffffff; }

/* SEÇÕES */

.secao {
  padding: 90px 8%;
  text-align: center;
  background: var(--branco);
}

.secao h2 {
  font-size: 44px;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.secao > p:not(.tagline) {
  max-width: 880px;
  margin: 0 auto;
  font-size: 19px;
  color: var(--cinza-texto);
}

.fundo-claro { background: var(--cinza-claro); }

/* SOBRE */

.sobre {
  text-align: left;
}

.sobre-conteudo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.sobre-texto h2 {
  font-size: 48px;
  line-height: 1.1;
  margin-bottom: 28px;
}

.sobre-texto p {
  color: var(--cinza-texto);
  font-size: 18px;
  margin-bottom: 18px;
}

.sobre-destaques {
  display: grid;
  gap: 20px;
}

.sobre-item {
  background: var(--cinza-claro);
  border: 1px solid var(--cinza-borda);
  border-radius: 26px;
  padding: 28px;
  transition: 0.3s;
}

.sobre-item:hover {
  transform: translateY(-5px);
  background: var(--branco);
  box-shadow: 0 18px 45px rgba(0,0,0,0.06);
}

.sobre-item span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--azul-tech);
  font-weight: 800;
  font-size: 14px;
}

.sobre-item h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.sobre-item p {
  color: var(--cinza-texto);
}

body.dark .sobre-item {
  background: #131922;
}

body.dark .sobre-item:hover {
  background: #17202c;
}

@media (max-width: 900px) {
  .sobre-conteudo {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .sobre-texto h2 {
    font-size: 34px;
  }
}

/* CARDS */

.cards {
  padding: 70px 8%;
  display: flex;
  gap: 28px;
  justify-content: center;
  flex-wrap: wrap;
  background: var(--branco);
}

.cards.interno {
  padding: 40px 0 0;
  background: transparent;
}

.card {
  background: var(--cinza-claro);
  padding: 36px;
  width: 320px;
  border-radius: 26px;
  text-align: center;
  border: 1px solid var(--cinza-borda);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  background: var(--branco);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
}

.card h3 {
  margin-bottom: 14px;
  font-size: 24px;
}

.card p { color: var(--cinza-texto); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
  margin-top: 40px;
}

.item {
  background: var(--branco);
  padding: 28px;
  border-radius: 22px;
  font-weight: 700;
  border: 1px solid var(--cinza-borda);
  transition: 0.3s;
}

.item:hover {
  transform: translateY(-5px);
  border-color: var(--azul-tech);
}

/* PROCESSO */

.processo {
  text-align: center;
}

.subtexto-processo {
  max-width: 760px;
  margin: 0 auto 60px;
}

.processo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.processo-card {
  position: relative;
  background: var(--branco);
  border: 1px solid var(--cinza-borda);
  border-radius: 28px;
  padding: 34px 28px;
  text-align: left;
  transition: 0.35s;
  overflow: hidden;
}

.processo-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  width: 42px;
  height: 4px;
  background: var(--azul-tech);
  border-radius: 0 0 8px 8px;
}

.processo-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

.processo-card span {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--azul-tech);
  font-weight: 800;
  font-size: 14px;
}

.processo-card h3 {
  font-size: 22px;
  line-height: 1.15;
  margin-bottom: 14px;
}

.processo-card p {
  color: var(--cinza-texto);
  font-size: 15px;
}

body.dark .processo-card {
  background: #131922;
}

body.dark .processo-card:hover {
  background: #17202c;
}

@media (max-width: 1000px) {
  .processo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 650px) {
  .processo-grid {
    grid-template-columns: 1fr;
  }

  .processo-card {
    text-align: center;
  }

  .processo-card::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* PRODUTOS */

.subtexto-produtos {
  max-width: 760px;
  margin: 0 auto 60px;
}

.produtos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 50px;
}

.produto-card {
  background: var(--cinza-claro);
  padding: 40px;
  border-radius: 30px;
  text-align: left;
  border: 1px solid var(--cinza-borda);
  transition: 0.35s;
}

.produto-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
  background: var(--branco);
}

.produto-card.destaque {
  border: 1px solid rgba(0, 113, 227, 0.22);
  background:
    radial-gradient(circle at top right, rgba(0, 113, 227, 0.08), transparent 30%),
    var(--cinza-claro);
}

.produto-status {
  display: inline-block;
  margin-bottom: 20px;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(47, 191, 113, 0.12);
  color: var(--verde-quimica);
  font-size: 13px;
  font-weight: 700;
}

.produto-status.neutro {
  background: rgba(0, 113, 227, 0.10);
  color: var(--azul-tech);
}

.produto-card h3 {
  font-size: 28px;
  line-height: 1.15;
  margin-bottom: 18px;
}

.produto-card p {
  color: var(--cinza-texto);
  margin-bottom: 24px;
}

.produto-card ul {
  list-style: none;
  margin-bottom: 30px;
  display: grid;
  gap: 12px;
}

.produto-card li { color: var(--cinza-texto); }

.produto-card li::before {
  content: "✓";
  color: var(--verde-quimica);
  font-weight: 800;
  margin-right: 10px;
}

.produto-card a {
  color: var(--azul-tech);
  text-decoration: none;
  font-weight: 700;
}

.produto-card a:hover { text-decoration: underline; }

/* PERFIL */

.avatar {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--azul-tech), var(--verde-quimica));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  font-size: 34px;
  font-weight: 800;
}

/* NOVIDADES */

.subtexto-novidades {
  max-width: 760px;
  margin: 0 auto 60px;
}

.novidades-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.novidade-card {
  background: var(--cinza-claro);
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid var(--cinza-borda);
  transition: 0.35s;
  text-align: left;
}

.novidade-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

.novidade-imagem { height: 220px; }

.gradiente-1 {
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.28), transparent 20%),
    linear-gradient(135deg, #0071e3, #2fbf71);
}

.gradiente-2 {
  background:
    radial-gradient(circle at 75% 25%, rgba(255,255,255,0.24), transparent 20%),
    linear-gradient(135deg, #1d1d1f, #0071e3);
}

.gradiente-3 {
  background:
    radial-gradient(circle at 25% 30%, rgba(255,255,255,0.22), transparent 18%),
    linear-gradient(135deg, #2fbf71, #1d1d1f);
}

.novidade-conteudo { padding: 32px; }

.novidade-tag {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0,113,227,0.10);
  color: var(--azul-tech);
  font-size: 12px;
  font-weight: 700;
}

.novidade-conteudo h3 {
  font-size: 28px;
  line-height: 1.15;
  margin-bottom: 18px;
}

.novidade-conteudo p {
  color: var(--cinza-texto);
  margin-bottom: 26px;
}

.novidade-conteudo a {
  color: var(--azul-tech);
  text-decoration: none;
  font-weight: 700;
}

.novidade-conteudo a:hover { text-decoration: underline; }

/* CONTATO */

.contato p { margin-bottom: 10px; }

.contato-intro { margin-bottom: 42px; }

.formulario-contato {
  max-width: 760px;
  margin: 0 auto;
  padding: 42px;
  background: var(--cinza-claro);
  border: 1px solid var(--cinza-borda);
  border-radius: 32px;
  text-align: left;
}

.campo {
  display: flex;
  flex-direction: column;
  margin-bottom: 22px;
}

.campo label {
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 14px;
}

.campo input,
.campo textarea {
  padding: 15px 16px;
  border: 1px solid var(--cinza-borda);
  border-radius: 14px;
  font-size: 15px;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--branco);
  color: var(--grafite);
  outline: none;
}

.campo input:focus,
.campo textarea:focus {
  border-color: var(--azul-tech);
}

.campo textarea { resize: vertical; }

/* RODAPÉ */

.rodape {
  padding: 70px 8% 28px;
  background: #05070a;
  color: #ffffff;
}

.rodape-conteudo {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 50px;
  align-items: start;
  margin-bottom: 50px;
}

.rodape-marca img {
  height: 76px;
  width: auto;
  display: block;
  margin-bottom: 20px;
}

.rodape-marca p {
  max-width: 420px;
  color: #9aa4af;
  font-size: 15px;
}

.rodape-links,
.rodape-contato {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rodape-links h4,
.rodape-contato h4 {
  margin-bottom: 10px;
  color: #ffffff;
  font-size: 16px;
}

.rodape-links a {
  color: #9aa4af;
  text-decoration: none;
  font-size: 15px;
  transition: 0.3s;
}

.rodape-links a:hover { color: var(--azul-tech); }

.rodape-contato p {
  color: #9aa4af;
  font-size: 15px;
}

.rodape-base {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.10);
  text-align: center;
}

.rodape-base p {
  color: #7d8792;
  font-size: 14px;
}

/* DARK MODE */

body.dark {
  --grafite: #f5f7fa;
  --cinza-texto: #9aa4af;
  --cinza-claro: #0b0f14;
  --cinza-borda: #273241;
  --branco: #131922;
  --azul-tech: #4da3ff;
  --verde-quimica: #3ddc84;
  background: #0b0f14;
}

body.dark .cabecalho {
  background: rgba(11, 15, 20, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.dark .menu a { color: #f5f7fa; }
body.dark .menu a:hover { color: var(--azul-tech); }

body.dark .botao-tema {
  background: transparent;
  color: #f5f7fa;
  border: none;
}

body.dark .hero {
  background:
    radial-gradient(circle at 20% 20%, rgba(77, 163, 255, 0.16), transparent 28%),
    radial-gradient(circle at 80% 30%, rgba(61, 220, 132, 0.12), transparent 26%),
    linear-gradient(135deg, #0b0f14 0%, #101722 55%, #07111d 100%);
}

body.dark .hero-particulas {
  opacity: 0.22;
}

body.dark .hero-glow {
  background: radial-gradient(circle, rgba(77,163,255,0.22), transparent 65%);
}

body.dark .hero-card,
body.dark .card,
body.dark .item,
body.dark .produto-card,
body.dark .novidade-card,
body.dark .formulario-contato {
  background: #131922;
  color: #f5f7fa;
}

body.dark .produto-card:hover { background: #17202c; }

body.dark .produto-card.destaque {
  background:
    radial-gradient(circle at top right, rgba(77, 163, 255, 0.14), transparent 30%),
    #131922;
}

body.dark .secao { background: #0b0f14; }
body.dark .fundo-claro { background: #101722; }

body.dark .selo {
  background: rgba(77, 163, 255, 0.13);
  color: var(--azul-tech);
}

body.dark .produto-visual {
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.12), transparent 18%),
    radial-gradient(circle at center, rgba(77, 163, 255, 0.18), transparent 58%),
    #101722;
}

body.dark .frasco { background: rgba(19, 25, 34, 0.8); }
body.dark .beneficios li { color: var(--cinza-texto); }

body.dark .campo input,
body.dark .campo textarea {
  background: #0b0f14;
  color: #f5f7fa;
}

/* ANIMAÇÃO SEGURA */

.reveal {
  opacity: 1;
  transform: translateY(0);
}

body.animacoes-ativas .reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.85s ease, transform 0.85s ease;
}

body.animacoes-ativas .reveal.aparecer {
  opacity: 1;
  transform: translateY(0);
}

/* MENU MOBILE */

.menu-mobile {
  display: none;
  background: transparent;
  border: none;
  font-size: 26px;
  cursor: pointer;
  color: var(--grafite);
}

body.dark .menu-mobile {
  color: #f5f7fa;
}

/* RESPONSIVO */

/* BOTÃO DO FORMULÁRIO */
.botao-formulario {
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-family: Arial, Helvetica, sans-serif;
  padding: 13px 28px;
  border-radius: 999px;
  background: var(--azul-tech);
  color: #ffffff;
  font-weight: 600;
  display: inline-block;
  width: auto;
  appearance: none;
  -webkit-appearance: none;
}

.botao-formulario:hover {
  background: #005bb5;
  transform: translateY(-2px);
}

body.dark .botao-formulario {
  background: var(--azul-tech);
  color: #ffffff;
}

@media (max-width: 900px) {
 .cabecalho {
  height: auto;
  min-height: 82px;
  padding: 12px 6%;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo img {
  height: 58px;
}

.menu-mobile {
  display: block;
}

.menu {
  display: none;
  width: 100%;
  margin-top: 14px;
  text-align: center;
}

.menu.ativo {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 0;
}

.menu a {
  margin: 0;
  font-size: 15px;
}

.botao-tema {
  margin-left: 0;
}

  .hero {
    grid-template-columns: 1fr;
    padding-top: 190px;
    text-align: center;
  }

  .descricao {
    margin-left: auto;
    margin-right: auto;
  }

  .botoes { justify-content: center; }

  .hero h1 { font-size: 38px; }

  .secao h2 { font-size: 32px; }

  .chem-carrossel {
    height: 300px;
    margin: 40px 5%;
    border-radius: 22px;
  }

  .chem-slide-content h2 { font-size: 30px; }

  .chem-slide-content p { font-size: 16px; }

  .produto-card { text-align: center; }

  .rodape-conteudo {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .rodape-marca img { margin: 0 auto 20px; }

  .rodape-marca p { margin: 0 auto; }
}

/* SPINNER */

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top: 2px solid #ffffff;
  border-radius: 50%;
  display: none;
  animation: girar 0.7s linear infinite;
}

@keyframes girar {
  to {
    transform: rotate(360deg);
  }
}

.botao-formulario {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}