/* ==========================================================================
   GÁS FIXE AQUECEDORES - DESIGN SYSTEM (PRETO + CHAMA DO LOGO)
   Fundo Principal: #0a0a0a | Fundo Secundário: #16161a / #1c1c1f
   Destaque: Gradiente Chama (#F5A623 a #E8871E) | Texto: Branco (#ffffff)
   ZERO EMOJIS | ZERO AZUL | 100% RESPONSIVO
   ========================================================================== */

:root {
  --bg-main: #0a0a0a;
  --bg-secondary: #16161a;
  --bg-card: #1c1c1f;
  --bg-card-hover: #242429;
  --border-color: #2a2a30;
  --border-highlight: rgba(245, 166, 35, 0.4);

  --text-white: #ffffff;
  --text-light: #e1e1e6;
  --text-muted: #94949e;

  --flame-yellow: #F5A623;
  --flame-orange: #E8871E;
  --flame-gradient: linear-gradient(135deg, #F5A623 0%, #E8871E 100%);
  --flame-glow: 0 4px 24px rgba(245, 166, 35, 0.28);

  --brand-whatsapp: #25D366;
  --brand-whatsapp-hover: #1EBE57;

  --font-main: -apple-system, BlinkMacSystemFont, "Plus Jakarta Sans", "Inter", "Segoe UI", Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.6);
}

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

html {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--text-white);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--bg-main);
}

a {
  color: var(--flame-yellow);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--flame-orange);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.icon-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* TOPBAR & HEADER */
.top-bar {
  background-color: #040405;
  color: var(--text-muted);
  padding: 10px 0;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.badge-rating {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 166, 35, 0.12);
  border: 1px solid rgba(245, 166, 35, 0.35);
  color: var(--flame-yellow);
  padding: 4px 12px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.82rem;
}

.site-header {
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

.brand-logo img {
  height: 44px;
  width: auto;
  display: block;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 6px;
  align-items: center;
}

.main-nav a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(245, 166, 35, 0.12);
  color: var(--flame-yellow);
}

/* BUTTON SYSTEM */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-flame {
  background: var(--flame-gradient);
  color: #000000;
  box-shadow: var(--flame-glow);
}

.btn-flame:hover {
  background: linear-gradient(135deg, #FFB838 0%, #F5A623 100%);
  color: #000000;
  transform: translateY(-2px);
}

.btn-whatsapp {
  background-color: var(--brand-whatsapp);
  color: #FFFFFF;
}

.btn-whatsapp:hover {
  background-color: var(--brand-whatsapp-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-outline-flame {
  background: transparent;
  color: var(--flame-yellow);
  border: 1px solid var(--flame-yellow);
}

.btn-outline-flame:hover {
  background: rgba(245, 166, 35, 0.12);
  color: var(--flame-yellow);
}

.btn-outline-dark {
  background: transparent;
  color: var(--text-white);
  border: 1px solid var(--border-color);
}

.btn-outline-dark:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* HERO SECTION */
.hero {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-main) 100%);
  padding: 80px 0 95px;
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 52px;
  align-items: center;
}

.eyebrow-flame {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--flame-yellow);
  margin-bottom: 14px;
  display: block;
}

.hero-title {
  font-size: 2.7rem;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 22px;
  letter-spacing: -0.6px;
}

.hero-title span {
  background: var(--flame-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 30px;
  line-height: 1.65;
}

.hero-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.98rem;
  color: var(--text-light);
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  border-top: 1px solid var(--border-color);
  padding-top: 26px;
}

.stat-number {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--flame-yellow);
}

.stat-label {
  font-size: 0.83rem;
  color: var(--text-muted);
}

.hero-card-right {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.hero-card-img {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 22px;
}

.hero-card-img img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.hero-card-right h3 {
  font-size: 1.3rem;
  color: var(--text-white);
  margin-bottom: 10px;
}

.hero-card-right p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

/* SEÇÃO DE REGIONALIZAÇÃO DA HOME */
.region-overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.region-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--flame-yellow);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}

.region-box h3 {
  font-size: 1.25rem;
  color: var(--text-white);
  margin-bottom: 10px;
}

.region-box p {
  font-size: 0.94rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* QUIZ INTERATIVO */
.quiz-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.quiz-step {
  display: none;
}

.quiz-step.active {
  display: block;
}

.quiz-step-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 10px;
}

.quiz-step-subtitle {
  font-size: 0.98rem;
  color: var(--text-muted);
  margin-bottom: 26px;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.quiz-option-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  color: var(--text-white);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.quiz-option-btn:hover {
  border-color: var(--flame-yellow);
  background: rgba(245, 166, 35, 0.08);
  color: var(--flame-yellow);
}

.quiz-result-box {
  background: rgba(37, 211, 102, 0.08);
  border: 1px solid rgba(37, 211, 102, 0.35);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
}

/* SEÇÕES & CARDS VARIADOS */
.section-main {
  background-color: var(--bg-main);
  padding: 90px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-secondary {
  background-color: var(--bg-secondary);
  padding: 90px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 48px;
}

.section-title-question {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--flame-yellow);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.4px;
}

.section-answer-direct {
  font-size: 1.08rem;
  color: var(--text-white);
  line-height: 1.7;
  margin-bottom: 12px;
  font-weight: 600;
}

.section-proof-fact {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* CARDS DE SERVIÇOS */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.card-service {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card-service:hover {
  transform: translateY(-4px);
  border-color: var(--flame-orange);
}

.card-service-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: rgba(245, 166, 35, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-service h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.card-service p {
  font-size: 0.96rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 20px;
}

.symptoms-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.symptom-pill {
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(245, 166, 35, 0.08);
  color: var(--flame-yellow);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(245, 166, 35, 0.2);
}

/* CARDS DE BAIRROS (FÓRMULA DE 4 ELEMENTOS) */
.neighborhoods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.card-neighborhood {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--flame-yellow);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
}

.card-neighborhood h3 {
  font-size: 1.3rem;
  color: var(--text-white);
  margin-bottom: 12px;
}

.card-neighborhood p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.65;
}

/* GALERIA DE FOTOS REAIS */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.gallery-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.gallery-img-wrapper {
  height: 250px;
  overflow: hidden;
}

.gallery-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-caption {
  padding: 20px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
  line-height: 1.5;
}

/* TABELA DE COMPARAÇÃO */
.comparison-table-wrapper {
  overflow-x: auto;
  margin-top: 24px;
}

.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
}

.comparison-table th {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 800;
  text-align: left;
}

.comparison-table th.col-feature {
  background: #141418;
  color: var(--text-white);
  width: 34%;
}

.comparison-table th.col-gasfixe {
  background: #1A1A24;
  color: var(--flame-yellow);
  width: 33%;
}

.comparison-table th.col-generic {
  background: #0E0E12;
  color: var(--text-muted);
  width: 33%;
}

.comparison-table td {
  padding: 18px 24px;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table td.col-gasfixe {
  background: rgba(245, 166, 35, 0.04);
  font-weight: 600;
  color: var(--text-white);
}

.comparison-table td.col-generic {
  color: var(--text-muted);
}

.status-badge {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
}

/* REVIEWS GRID (DEPOIMENTOS FIXOS EM HTML LITERAIS) */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.card-review {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-author {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-white);
  margin-bottom: 4px;
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
}

.review-text {
  color: var(--text-light);
  font-size: 0.96rem;
  line-height: 1.65;
  font-style: italic;
}

.trustindex-section-wrapper {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

.trustindex-subtitle {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--flame-yellow);
  margin-bottom: 20px;
}

/* ELEMENTOS DE ESTRUTURA DO BLOG */
.box-essencial {
  background: rgba(245, 166, 35, 0.08);
  border: 1px solid rgba(245, 166, 35, 0.3);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 32px;
}

.box-essencial-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--flame-yellow);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.box-essencial ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.box-essencial li {
  position: relative;
  padding-left: 22px;
  color: var(--text-white);
  font-size: 0.96rem;
}

.box-essencial li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--flame-yellow);
  font-weight: 900;
  font-size: 1.2rem;
}

.author-signature-bar {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 28px;
}

.table-of-contents-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 22px 26px;
  margin-bottom: 36px;
}

.table-of-contents-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.table-of-contents-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.table-of-contents-box a {
  color: var(--text-light);
  font-size: 0.93rem;
  text-decoration: none;
}

.table-of-contents-box a:hover {
  color: var(--flame-yellow);
}

.sources-list-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-top: 40px;
}

.sources-list-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--flame-yellow);
  margin-bottom: 14px;
}

.sources-list-box ol {
  margin-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text-light);
  font-size: 0.92rem;
}

/* FAQ ACCORDION */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  overflow: hidden;
}

.faq-item[open] {
  border-color: rgba(245, 166, 35, 0.4);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--flame-yellow);
  font-weight: 700;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-light);
  font-size: 0.98rem;
  line-height: 1.65;
}

/* MAP RESPONSIVE */
.map-responsive {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

.map-responsive iframe {
  width: 100%;
  height: 450px;
  display: block;
}

/* FOOTER & SITEMAP */
.site-footer {
  background-color: #040405;
  color: var(--text-muted);
  padding: 75px 0 38px;
  border-top: 1px solid var(--border-color);
  font-size: 0.92rem;
  margin-top: auto;
}

.footer-sitemap {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.1fr 1.3fr;
  gap: 44px;
  margin-bottom: 50px;
}

.footer-col h4 {
  color: var(--text-white);
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--flame-yellow);
}

.footer-socials {
  display: flex;
  gap: 14px;
  margin-top: 16px;
}

.footer-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--flame-yellow);
  text-decoration: none;
}

.footer-socials a:hover {
  background: var(--flame-gradient);
  color: #000000;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  text-align: center;
  font-size: 0.85rem;
}

/* STICKY WHATSAPP */
.whatsapp-sticky {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 999;
  background-color: var(--brand-whatsapp);
  color: #FFFFFF;
  padding: 15px 24px;
  border-radius: 50px;
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  box-shadow: 0 8px 26px rgba(37, 211, 102, 0.45);
  display: flex;
  align-items: center;
  gap: 10px;
}

.whatsapp-sticky:hover {
  background-color: var(--brand-whatsapp-hover);
  color: #FFFFFF;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid, .footer-sitemap, .region-overview-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .header-inner {
    flex-direction: column;
    gap: 14px;
  }
  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-stats-bar {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}