/* ==========================================================================
   PERES & CO LTDA — RITMO SECCIONAL E LAYOUTS
   Alternância tonal deliberada: Base Escura -> Escuro Suavizado -> Claro Inverso -> Base Escura -> Azul Sinal
   ========================================================================== */

/* --------------------------------------------------------------------------
   Seção 1: Hero (Promessa & Mecanismo) — Base Escura
   -------------------------------------------------------------------------- */
.section-hero {
  background-color: var(--bg-dark-base);
  padding-top: clamp(6.5rem, 14vw, 10rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.05fr 1.15fr;
    gap: var(--space-12);
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: var(--text-md);
  color: var(--text-secondary);
  line-height: 1.55;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

.hero-proof-strip {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.hero-proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   Seção 2: Faixa de Princípios Contínuos — Base Escura
   -------------------------------------------------------------------------- */
.section-principles {
  background-color: var(--bg-dark-base);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.principles-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}

.principle-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-4);
  border-left: 2px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.principle-item:hover {
  border-left-color: var(--signal-blue-500);
}

.principle-numeral {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--signal-blue-400);
  font-weight: 600;
}

.principle-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
}

.principle-text {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Seção 3: Diagnóstico e Fragmentação Operacional — Escuro Suavizado
   -------------------------------------------------------------------------- */
.section-problem {
  background-color: var(--bg-soft-dark);
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-header-block {
  margin-bottom: var(--space-12);
}

.section-tagline {
  margin-bottom: var(--space-2);
}

.section-heading {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.section-description {
  font-size: var(--text-md);
  color: var(--text-secondary);
  max-width: 64ch;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.problem-card {
  background-color: var(--bg-soft-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.problem-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.problem-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.problem-friction-pill {
  background-color: rgba(245, 158, 11, 0.1);
  color: #FBBF24;
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
}

.problem-main-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.problem-main-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.55;
  margin: 0;
}

.problem-cost-line {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--signal-blue-300);
  background-color: rgba(37, 99, 235, 0.08);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--signal-blue-500);
}

/* --------------------------------------------------------------------------
   Seção 4: A Virada & Tese & Método — CLARO INVERSO (Editorial)
   -------------------------------------------------------------------------- */
.section-turning-point {
  background-color: var(--bg-light-base);
  color: var(--text-light-primary);
  padding: clamp(5rem, 10vw, 8.5rem) 0;
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.section-turning-point h2,
.section-turning-point h3,
.section-turning-point h4 {
  color: var(--text-light-primary);
}

.section-turning-point p {
  color: var(--text-light-secondary);
}

.editorial-quote-block {
  border-left: 3px solid var(--signal-blue-700);
  padding-left: var(--space-6);
  margin-bottom: var(--space-12);
  max-width: 74ch;
}

.editorial-quote-headline {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-light-primary);
  line-height: 1.25;
  margin-bottom: var(--space-3);
}

.editorial-quote-sub {
  font-size: var(--text-base);
  color: var(--text-light-secondary);
  line-height: 1.6;
}

/* Diagrama do Método em 3 Etapas Concretas */
.method-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 900px) {
  .method-timeline {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }
}

.method-card {
  background-color: var(--bg-light-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.method-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.method-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-light);
}

.method-step-number {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--signal-blue-700);
}

.method-duration {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-light-muted);
  background-color: var(--bg-light-surface);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.method-title {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--text-light-primary);
  margin-bottom: var(--space-2);
}

.method-desc {
  font-size: var(--text-sm);
  color: var(--text-light-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.method-deliverables-box {
  background-color: var(--bg-light-surface);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.deliverables-title {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-light-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-2);
}

.deliverables-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-light-secondary);
}

.deliverable-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.deliverable-bullet {
  color: var(--signal-blue-700);
  font-weight: bold;
}

/* --------------------------------------------------------------------------
   Seção 5: Evidência & Dossiês de Engenharia — Base Escura
   -------------------------------------------------------------------------- */
.section-evidence {
  background-color: var(--bg-dark-base);
  padding: clamp(5rem, 10vw, 8rem) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.dossier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 960px) {
  .dossier-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.dossier-card {
  background-color: var(--bg-dark-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
  transition: border-color var(--transition-fast);
}

.dossier-card:hover {
  border-color: var(--border-medium);
}

.dossier-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.dossier-category {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--signal-blue-400);
}

.dossier-confidential-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.dossier-headline {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.dossier-narrative {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: var(--space-4);
}

.dossier-specs {
  background-color: var(--bg-dark-surface);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.spec-line {
  display: flex;
  justify-content: space-between;
}

.spec-line strong {
  color: var(--text-primary);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Seção 6: Aplicações Práticas de Negócio — Base Escura
   -------------------------------------------------------------------------- */
.section-applications {
  background-color: var(--bg-dark-base);
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.applications-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.app-card {
  background-color: var(--bg-dark-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  transition: border-color var(--transition-fast);
}

.app-card:hover {
  border-color: var(--border-highlight);
}

.app-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--signal-blue-subtle);
  border: 1px solid rgba(59, 130, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--signal-blue-400);
}

.app-content h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.app-content p {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Seção 7: Encaixe & Anti-Venda — Escuro Suavizado
   -------------------------------------------------------------------------- */
.section-fit {
  background-color: var(--bg-soft-dark);
  padding: clamp(5rem, 10vw, 8rem) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.fit-columns-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

@media (min-width: 840px) {
  .fit-columns-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.fit-col-box {
  background-color: var(--bg-soft-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--border-subtle);
}

.fit-col-box.is-fit {
  border-top: 3px solid var(--status-active);
}

.fit-col-box.is-not-fit {
  border-top: 3px solid var(--status-amber);
}

.fit-col-title {
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.fit-checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.fit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

.fit-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.fit-item.valid .fit-icon {
  color: var(--status-active);
}

.fit-item.warning .fit-icon {
  color: var(--status-amber);
}

/* --------------------------------------------------------------------------
   Seção 8: FAQ Técnico & Objeções — Escuro Suavizado
   -------------------------------------------------------------------------- */
.section-faq {
  background-color: var(--bg-soft-dark);
  padding: clamp(4.5rem, 9vw, 7.5rem) 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   Seção 9: Briefing Interativo & CTA — Bloco Azul Sinal
   -------------------------------------------------------------------------- */
.section-cta-briefing {
  background: radial-gradient(circle at 50% 0%, #173777 0%, #0C1A38 50%, var(--bg-dark-base) 100%);
  padding: clamp(5rem, 10vw, 9rem) 0;
  position: relative;
}

.cta-header-center {
  text-align: center;
  max-width: 72ch;
  margin: 0 auto var(--space-10);
}

.cta-header-center .section-heading {
  font-size: var(--text-3xl);
}

/* --------------------------------------------------------------------------
   Seção 10: Rodapé Institucional — Base Escura Profunda
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: #05070A;
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

.footer-brand h3 {
  font-size: var(--text-base);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.footer-tagline {
  font-size: var(--text-xs);
  color: var(--text-muted);
  max-width: 38ch;
  line-height: 1.6;
}

.footer-nav-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-nav-list a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}