/* ============================================
   MASSA GÁS — ESTILOS
   Paleta inspirada em distribuidoras de GLP:
   vermelho-chama (energia), laranja (calor/ação)
   e azul profundo (confiança/segurança industrial)
   ============================================ */

:root {
  --vermelho-chama: #D62828;
  --vermelho-escuro: #A11F1F;
  --laranja: #F77F00;
  --azul-profundo: #0B2A4A;
  --azul-claro: #12395F;
  --creme: #FFF8F0;
  --branco: #FFFFFF;
  --cinza-texto: #4A4A4A;
  --preto-suave: #1B1B1B;
  --sombra: 0 10px 30px rgba(11, 42, 74, 0.15);
  --radius: 14px;
  --fonte-display: "Poppins", sans-serif;
  --fonte-texto: "Inter", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--fonte-texto);
  color: var(--preto-suave);
  background: var(--creme);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--fonte-display);
  line-height: 1.15;
  color: var(--azul-profundo);
}

.eyebrow-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(247, 127, 0, 0.12);
  color: var(--laranja);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 30px;
  border-radius: 999px;
  font-family: var(--fonte-display);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover { transform: translateY(-3px); }

.btn-primario {
  background: linear-gradient(135deg, var(--vermelho-chama), var(--laranja));
  color: var(--branco);
  box-shadow: 0 12px 24px rgba(214, 40, 40, 0.35);
}

.btn-secundario {
  background: var(--branco);
  color: var(--azul-profundo);
  border: 2px solid var(--azul-profundo);
}

.btn-whatsapp {
  background: #25D366;
  color: var(--branco);
  box-shadow: 0 12px 24px rgba(37, 211, 102, 0.35);
}

/* ===== HEADER ===== */
header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(11, 42, 74, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  font-family: var(--fonte-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--azul-profundo);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.logo span { color: var(--vermelho-chama); }

nav.menu-desktop {
  display: flex;
  gap: 32px;
}

nav.menu-desktop a {
  font-weight: 600;
  color: var(--azul-profundo);
  font-size: 0.95rem;
}

.header-cta { display: flex; align-items: center; gap: 16px; }

.header-cta .btn { padding: 12px 22px; font-size: 0.9rem; }

.menu-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--azul-profundo); cursor: pointer; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 90px 0 70px;
  background: radial-gradient(circle at 80% 20%, rgba(247, 127, 0, 0.16), transparent 55%),
              radial-gradient(circle at 10% 90%, rgba(214, 40, 40, 0.10), transparent 45%),
              var(--creme);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--vermelho-chama), var(--laranja));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--cinza-texto);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.hero-stats div strong {
  display: block;
  font-family: var(--fonte-display);
  font-size: 1.6rem;
  color: var(--azul-profundo);
}

.hero-stats div span { font-size: 0.85rem; color: var(--cinza-texto); }

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cilindro-ilustracao {
  width: 100%;
  max-width: 380px;
  animation: flutuar 4.5s ease-in-out infinite;
}

@keyframes flutuar {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-16px); }
}

.chama-badge {
  position: absolute;
  top: 10%;
  right: 6%;
  background: var(--branco);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--sombra);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--azul-profundo);
  font-size: 0.9rem;
}

/* ===== SEÇÕES GERAIS ===== */
section { padding: 80px 0; }

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); }

.section-head p { color: var(--cinza-texto); margin-top: 14px; font-size: 1.05rem; }

/* ===== OFERTAS ===== */
.ofertas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.oferta-card {
  background: var(--branco);
  border-radius: var(--radius);
  padding: 30px 26px;
  box-shadow: var(--sombra);
  position: relative;
  border-top: 4px solid var(--vermelho-chama);
  transition: transform 0.25s ease;
}

.oferta-card:hover { transform: translateY(-6px); }

.oferta-card .badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--laranja);
  color: var(--branco);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
}

.oferta-card h3 { font-size: 1.2rem; margin-bottom: 10px; }

.oferta-card p.desc { color: var(--cinza-texto); font-size: 0.92rem; margin-bottom: 18px; min-height: 66px; }

.oferta-card .preco {
  display: block;
  font-family: var(--fonte-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--vermelho-chama);
  margin-bottom: 16px;
}

.oferta-card .btn { width: 100%; padding: 12px; font-size: 0.9rem; }

/* ===== DIFERENCIAIS ===== */
.diferenciais-wrap {
  background: var(--azul-profundo);
  color: var(--branco);
  border-radius: 28px;
  padding: 60px 40px;
}

.diferenciais-wrap .section-head h2,
.diferenciais-wrap .section-head p { color: var(--branco); }
.diferenciais-wrap .section-head p { opacity: 0.8; }

.diferenciais-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}

.diferencial-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 24px;
}

.diferencial-item .icone {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--vermelho-chama), var(--laranja));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
}

.diferencial-item h3 { color: var(--branco); font-size: 1.05rem; margin-bottom: 8px; }
.diferencial-item p { font-size: 0.9rem; opacity: 0.82; }

/* ===== FORMULÁRIO DE CADASTRO ===== */
.cadastro {
  background: var(--branco);
  border-radius: 28px;
  box-shadow: var(--sombra);
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
}

.cadastro-info {
  background: linear-gradient(160deg, var(--vermelho-chama), var(--vermelho-escuro));
  color: var(--branco);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cadastro-info h2 { color: var(--branco); font-size: 1.9rem; margin-bottom: 16px; }
.cadastro-info p { opacity: 0.92; margin-bottom: 24px; }

.cadastro-info ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.cadastro-info li { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
.cadastro-info li::before { content: "✓"; font-weight: 800; background: rgba(255,255,255,0.2); width: 22px; height: 22px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; }

.cadastro-form { padding: 48px 40px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form-row.full { grid-template-columns: 1fr; }

.campo label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--azul-profundo);
  margin-bottom: 6px;
}

.campo input,
.campo select,
.campo textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 10px;
  border: 1.5px solid #E2D9CC;
  font-family: var(--fonte-texto);
  font-size: 0.95rem;
  background: var(--creme);
  transition: border-color 0.2s ease;
}

.campo input:focus,
.campo select:focus,
.campo textarea:focus {
  outline: none;
  border-color: var(--vermelho-chama);
}

.campo-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--cinza-texto);
  margin-bottom: 22px;
}

.campo-check a { color: var(--vermelho-chama); font-weight: 600; }

.cadastro-form .btn { width: 100%; padding: 16px; font-size: 1rem; }

.form-feedback {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  display: none;
}
.form-feedback.ok { display: block; background: rgba(37,211,102,0.12); color: #1a7a3e; }
.form-feedback.erro { display: block; background: rgba(214,40,40,0.1); color: var(--vermelho-escuro); }

/* ===== FAQ ===== */
.faq-lista { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.faq-item {
  background: var(--branco);
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(11,42,74,0.06);
  overflow: hidden;
}

.faq-pergunta {
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  background: none;
  border: none;
  font-family: var(--fonte-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--azul-profundo);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-pergunta .sinal { font-size: 1.4rem; color: var(--vermelho-chama); transition: transform 0.25s ease; }

.faq-item.aberto .sinal { transform: rotate(45deg); }

.faq-resposta {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--cinza-texto);
  font-size: 0.92rem;
}

.faq-item.aberto .faq-resposta { max-height: 200px; padding: 0 24px 20px; }

/* ===== CTA FINAL ===== */
.cta-final {
  background: linear-gradient(135deg, var(--vermelho-chama), var(--laranja));
  border-radius: 28px;
  padding: 60px 40px;
  text-align: center;
  color: var(--branco);
}

.cta-final h2 { color: var(--branco); font-size: clamp(1.7rem, 3vw, 2.2rem); margin-bottom: 14px; }
.cta-final p { opacity: 0.95; margin-bottom: 28px; }
.cta-final .btn-secundario { background: var(--branco); color: var(--vermelho-chama); border: none; }

/* ===== FOOTER ===== */
footer {
  background: var(--azul-profundo);
  color: rgba(255,255,255,0.78);
  padding: 56px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}

.footer-logo { font-family: var(--fonte-display); font-weight: 800; font-size: 1.4rem; color: var(--branco); margin-bottom: 14px; }
.footer-logo span { color: var(--laranja); }

footer h4 { color: var(--branco); font-size: 0.95rem; margin-bottom: 14px; }
footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; font-size: 0.9rem; }
footer a:hover { color: var(--branco); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
}

.footer-bottom a { font-weight: 600; }

/* ===== BOTÕES FLUTUANTES ===== */
.flutuante-whatsapp {
  position: fixed;
  bottom: 26px;
  right: 26px;
  z-index: 900;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.45);
  animation: pulsar 2.4s infinite;
  font-size: 1.7rem;
}

@keyframes pulsar {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.55); }
  70% { box-shadow: 0 0 0 18px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.flutuante-pedido {
  position: fixed;
  bottom: 30px;
  left: 26px;
  z-index: 900;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--azul-profundo);
  color: var(--branco);
  font-family: var(--fonte-display);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 14px 30px rgba(11,42,74,0.35);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border: none;
}

.voltar-topo {
  position: fixed;
  bottom: 100px;
  right: 30px;
  z-index: 899;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--branco);
  color: var(--azul-profundo);
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--sombra);
  cursor: pointer;
  border: none;
  font-size: 1.1rem;
}

/* ===== RESPONSIVO ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin-bottom: 20px; }
  .cadastro { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  nav.menu-desktop { display: none; }
  .menu-toggle { display: block; }
  .header-cta .btn-secundario { display: none; }
}

@media (max-width: 600px) {
  .hero { padding: 60px 0 40px; }
  section { padding: 56px 0; }
  .form-row { grid-template-columns: 1fr; }
  .cadastro-info, .cadastro-form { padding: 32px 24px; }
  .flutuante-pedido span.texto { display: none; }
  .flutuante-pedido { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}