/* ==========================================================================
   BrUpGrade — Design System & Folha de Estilos Institucional
   Padrão Visual: Azul & Grafite Profundo (Inspirado no ecossistema Gradup)
   Acessibilidade WCAG AA | Tipografia Fluida | Brilho e Microinterações
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens de Design, Cores & Gradientes (Light & Dark)
   -------------------------------------------------------------------------- */
:root {
  /* Tipografia Moderna */
  --font-sans: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Bricolage Grotesque', 'Hanken Grotesk', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* Espaçamentos Padronizados */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* Formas e Transições */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --transition-fast: 0.15s var(--ease-out);
  --transition-normal: 0.28s var(--ease-out);
}

/* --------------------------------------------------------------------------
   Tema Escuro (Padrão) — Azul Elétrico + Grafite Profundo
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  --bg-page: #080d16;
  --bg-surface: #0f1826;
  --bg-surface-alt: #142032;
  --bg-card: rgba(19, 30, 48, 0.78);
  --bg-card-hover: rgba(24, 38, 62, 0.96);
  --bg-glass: rgba(15, 24, 38, 0.88);
  
  --bg-band: #101a2b;
  --bg-header: #0f1826;
  --bg-footer: #060910;
  
  --text-primary: #f8fafc;       /* Contraste > 17:1 */
  --text-secondary: #cbd5e1;     /* Contraste > 9:1 */
  --text-muted: #94a3b8;         /* Contraste > 5.2:1 */
  
  --header-text: #e2e8f0;
  --header-text-muted: #94a3b8;

  /* Azul & Ciano Elétricos com Toque Verde-Grafite */
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-light: rgba(59, 130, 246, 0.16);
  --color-accent: #38bdf8;       /* Ciano neon */
  --color-accent-light: rgba(56, 189, 248, 0.14);
  --color-accent-glow: rgba(59, 130, 246, 0.4);
  --color-success: #22c55e;
  --color-success-bg: rgba(34, 197, 94, 0.15);

  --border-subtle: rgba(116, 170, 255, 0.14);
  --border-strong: rgba(59, 130, 246, 0.38);
  --border-focus: #60a5fa;

  --tech-grid-color: rgba(59, 130, 246, 0.05);
  --hero-glow: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.24) 0%, transparent 70%);

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.35);
}

/* --------------------------------------------------------------------------
   Tema Claro — Superfícies Limpas com Cabeçalho e Faixas Azul-Grafite
   -------------------------------------------------------------------------- */
[data-theme="light"] {
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.9);
  
  --bg-band: #1b2739;           /* Azul-Grafite Profundo no Claro */
  --bg-header: #1b2739;         /* Cabeçalho Azul-Grafite Gradup */
  --bg-footer: #151f2e;         /* Rodapé Azul-Grafite Gradup */
  
  --text-primary: #0f172a;       /* Contraste > 16:1 */
  --text-secondary: #334155;     /* Contraste > 8.9:1 */
  --text-muted: #475569;         /* Contraste > 5.8:1 */

  --header-text: #f8fafc;
  --header-text-muted: #cbd5e1;
  
  --color-primary: #1d4ed8;      /* Azul escuro com alto contraste */
  --color-primary-hover: #1e40af;
  --color-primary-light: rgba(29, 78, 216, 0.08);
  --color-accent: #0284c7;
  --color-accent-light: rgba(2, 132, 199, 0.08);
  --color-accent-glow: rgba(29, 78, 216, 0.25);
  --color-success: #16a34a;
  --color-success-bg: #eaf7ef;

  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-focus: #1d4ed8;

  --tech-grid-color: rgba(15, 23, 42, 0.035);
  --hero-glow: radial-gradient(circle at 50% 0%, rgba(29, 78, 216, 0.09) 0%, transparent 70%);

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.1);
  --shadow-glow: 0 0 22px rgba(29, 78, 216, 0.18);
}

/* --------------------------------------------------------------------------
   2. Reset & Estrutura Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Orbes de Brilho Ambiente */
.ambient-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(100px);
  opacity: 0.2;
  z-index: 0;
}

.glow-1 {
  top: 5%;
  left: -150px;
  background: radial-gradient(circle, #3b82f6, transparent 70%);
}

.glow-2 {
  top: 40%;
  right: -150px;
  background: radial-gradient(circle, #0284c7, transparent 70%);
}

/* Grade de Alta Tecnologia */
.tech-grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background-image: 
    linear-gradient(to right, var(--tech-grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--tech-grid-color) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 30%, black 45%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 45%, transparent 85%);
}

/* Acessibilidade: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: var(--space-sm) var(--space-md);
  z-index: 1000;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--border-focus);
}

/* Foco de Teclado */
:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 3px;
}

/* Contêiner Universal */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  position: relative;
  z-index: 2;
}

/* --------------------------------------------------------------------------
   3. Cabeçalho Institucional com Imagem de Agentes & Brilho Dinâmico
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-header);
  background-image: 
    linear-gradient(135deg, rgba(8, 13, 22, 0.90) 0%, rgba(16, 26, 43, 0.93) 100%),
    url('assets/ai_agents_bg.jpg');
  background-size: cover;
  background-position: center top;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* Feixe de Luz Deslizante no Cabeçalho (Direita para Esquerda) */
.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: -50%;
  width: 35%;
  height: 100%;
  background: linear-gradient(to left, transparent, rgba(56, 189, 248, 0.22), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
  animation: header-sweep-rtl 4.8s infinite cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

@keyframes header-sweep-rtl {
  0% { right: -50%; }
  35% { right: 150%; }
  100% { right: 150%; }
}

[data-theme="light"] .site-header {
  background-color: #1b2739;
  background-image: 
    linear-gradient(135deg, rgba(27, 39, 57, 0.92) 0%, rgba(36, 52, 76, 0.94) 100%),
    url('assets/ai_agents_bg.jpg');
}

[data-theme="light"] .site-header::before {
  background: linear-gradient(to left, transparent, rgba(116, 170, 255, 0.3), transparent);
  animation: header-sweep-rtl 4s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 86px;
  position: relative;
  z-index: 2;
}

/* Logotipo Oficial Ampliado */
.brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  position: relative;
}

.header-logo-img {
  height: 68px;
  width: auto;
  max-width: 230px;
  object-fit: contain;
  filter: drop-shadow(0 4px 14px rgba(59, 130, 246, 0.5));
  transition: transform var(--transition-normal), filter var(--transition-normal);
  display: block;
}

.header-logo-img:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 6px 22px rgba(59, 130, 246, 0.75));
}

.footer-logo-img {
  height: 64px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.45));
  display: block;
  transition: transform var(--transition-normal);
}

.footer-logo-img:hover {
  transform: scale(1.05);
}

/* Menu de Navegação */
.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  color: var(--header-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: var(--space-xs) var(--space-xs);
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-accent);
}

.nav-btn-cta {
  background-color: rgba(59, 130, 246, 0.2);
  color: #ffffff !important;
  padding: 0.55rem 1.25rem !important;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(116, 170, 255, 0.5);
  font-weight: 700;
  transition: all var(--transition-fast);
}

.nav-btn-cta:hover {
  background-color: var(--color-primary);
  color: #ffffff !important;
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Botão Alternador de Tema */
.theme-toggle-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-pill);
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--color-accent);
  background-color: rgba(56, 189, 248, 0.2);
  color: var(--color-accent);
}

[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* Botão Mobile Hamburger */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.hamburger-bar {
  width: 100%;
  height: 2px;
  background-color: #ffffff;
  transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   4. Botões e Ações Globais com Brilho Shimmer
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-fast);
  min-height: 46px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-hover), #1d4ed8);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* Efeito Shimmer de Brilho da Direita para a Esquerda */
.btn-shine::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(to left, transparent, rgba(255, 255, 255, 0.45), transparent);
  transform: rotate(30deg);
  animation: shine-sweep-rtl 4s infinite ease-in-out;
}

@keyframes shine-sweep-rtl {
  0% { transform: rotate(30deg) translate(0, 0); }
  35% { transform: rotate(30deg) translate(-350%, 0); }
  100% { transform: rotate(30deg) translate(-350%, 0); }
}

.btn-secondary {
  background-color: var(--bg-surface-alt);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  min-height: 38px;
}

.btn-icon {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   5. Seção Hero
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  background: var(--hero-glow);
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-bottom: var(--space-3xl);
}

.hero-content {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  margin-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.hero-badge::after {
  content: '';
  position: absolute;
  top: 0;
  right: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(to left, transparent, rgba(56, 189, 248, 0.4), transparent);
  transform: skewX(-25deg);
  animation: badge-sweep-rtl 3.5s infinite ease-in-out;
}

@keyframes badge-sweep-rtl {
  0% { right: -100%; }
  30% { right: 200%; }
  100% { right: 200%; }
}

.status-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--color-success);
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.8vw, 3.4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.highlight-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

/* Moldura Visual Tecnológica no Hero */
.hero-visual-card {
  position: relative;
}

.tech-card-glass {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.tech-card-glass:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 35px rgba(59, 130, 246, 0.4);
}

.tech-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem var(--space-md);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #eab308; }
.dot-green { background: #22c55e; }

.terminal-title {
  color: var(--text-muted);
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-success);
  font-weight: 600;
  font-size: 0.75rem;
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-success);
  border-radius: 50%;
  display: inline-block;
}

.tech-media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
}

.tech-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.tech-media-frame:hover .tech-hero-img {
  transform: scale(1.04);
}

.tech-overlay-data {
  position: absolute;
  bottom: var(--space-sm);
  left: var(--space-sm);
  display: flex;
  gap: var(--space-xs);
}

.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(15, 24, 38, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 5px 10px;
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.chip-green {
  border-color: rgba(34, 197, 94, 0.4);
}

/* Barra de Destaques Verídicos (Trust Bar) */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  background-color: var(--bg-surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
}

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

.trust-icon-box {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.trust-item:hover .trust-icon-box {
  transform: scale(1.08);
}

.trust-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--space-2xs);
}

.trust-text p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   6. Faixas Azuis (Bands) com Imagem de Fundo de Agentes de IA & Animação
   -------------------------------------------------------------------------- */
.section-block {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
  position: relative;
}

.bg-band {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-band);
  background-image: 
    linear-gradient(135deg, rgba(8, 13, 22, 0.92) 0%, rgba(16, 26, 43, 0.94) 100%),
    url('assets/ai_agents_bg.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
}

.bg-band::before {
  content: '';
  position: absolute;
  top: 0;
  right: -50%;
  width: 35%;
  height: 100%;
  background: linear-gradient(to left, transparent, rgba(56, 189, 248, 0.18), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
  animation: band-sweep-rtl 5s infinite cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

@keyframes band-sweep-rtl {
  0% { right: -50%; }
  35% { right: 150%; }
  100% { right: 150%; }
}

[data-theme="light"] .bg-band {
  background-color: #1b2739;
  background-image: 
    linear-gradient(135deg, rgba(27, 39, 57, 0.93) 0%, rgba(36, 52, 76, 0.95) 100%),
    url('assets/ai_agents_bg.jpg');
  color: #f8fafc;
}

[data-theme="light"] .bg-band::before {
  background: linear-gradient(to left, transparent, rgba(116, 170, 255, 0.25), transparent);
  animation: band-sweep-rtl 4.2s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] .bg-band .section-title,
[data-theme="light"] .bg-band .step-title,
[data-theme="light"] .bg-band .commitment-title {
  color: #f8fafc;
}

[data-theme="light"] .bg-band .section-desc,
[data-theme="light"] .bg-band .step-desc,
[data-theme="light"] .bg-band .commitment-text {
  color: #cbd5e1;
}

[data-theme="light"] .bg-band .step-card {
  background-color: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
}

[data-theme="light"] .bg-band .commitment-box {
  background-color: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(16px);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-2xl);
}

.section-kicker {
  display: block;
  font-size: 0.825rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

[data-theme="light"] .bg-band .section-kicker {
  color: var(--color-accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.6vw, 2.45rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   7. Seção Sobre com Cartões com Brilho
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.glow-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glow-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-glow);
}

.about-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
}

.card-top-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.about-card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.about-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  font-size: 1rem;
}

.about-card p:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   8. Seção Processo / Como Trabalhamos
   -------------------------------------------------------------------------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  position: relative;
  z-index: 2;
}

.step-card {
  background-color: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.step-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
}

.step-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  color: var(--color-primary);
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-strong);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.step-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. Seção O Que Entregamos (Serviços e Soluções)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.service-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  position: relative;
}

.service-card-highlight {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-surface-alt), var(--bg-card));
  border-color: var(--border-strong);
}

.service-highlight-badge {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
}

.service-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.icon-box-accent {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.service-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  flex-grow: 1;
}

.service-features {
  list-style: none;
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-md);
}

.service-features li {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
}

.service-features li::before {
  content: "•";
  color: var(--color-primary);
  font-size: 1.3rem;
  line-height: 0;
  margin-right: var(--space-xs);
}

/* Card Showcase de Soluções com Imagem Moderna */
.solutions-showcase-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.showcase-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.showcase-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.showcase-desc {
  color: var(--text-secondary);
  font-size: 0.975rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.showcase-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-pill {
  background: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
}

.showcase-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.showcase-media:hover {
  transform: scale(1.02);
}

.showcase-img {
  width: 100%;
  height: auto;
  display: block;
}

/* --------------------------------------------------------------------------
   10. Caixa de Compromisso de Transparência
   -------------------------------------------------------------------------- */
.commitment-box {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  background-color: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  z-index: 2;
}

.commitment-icon-wrap {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.commitment-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.commitment-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   11. Seção Contato & Formulário
   -------------------------------------------------------------------------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
}

.contact-info-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.contact-info-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
}

.contact-channel {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.channel-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-channel strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.contact-channel span, .channel-link {
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.channel-link {
  color: var(--color-primary);
  font-weight: 600;
  word-break: break-all;
}

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

.copy-email-box {
  margin-top: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.copy-status-text {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* Formulário de Contato */
.contact-form-card {
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
}

.contact-form-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2xs);
}

.required {
  color: #ef4444;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  padding: 0.75rem var(--space-md);
  background-color: var(--bg-surface-alt);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--border-focus);
  background-color: var(--bg-surface);
}

.form-textarea {
  resize: vertical;
  min-height: 110px;
}

.form-error {
  display: block;
  color: #ef4444;
  font-size: 0.8rem;
  margin-top: var(--space-2xs);
}

.form-disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-sm);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   12. Rodapé Institucional com Imagem de Agentes & Brilho Dinâmico
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--bg-footer);
  background-image: 
    linear-gradient(135deg, rgba(6, 9, 16, 0.93) 0%, rgba(13, 20, 32, 0.96) 100%),
    url('assets/ai_agents_bg.jpg');
  background-size: cover;
  background-position: center bottom;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
  padding-top: var(--space-3xl);
  position: relative;
  z-index: 1;
  color: #f8fafc;
  overflow: hidden;
}

/* Feixe de Luz Deslizante no Rodapé (Direita para Esquerda) */
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  right: -50%;
  width: 35%;
  height: 100%;
  background: linear-gradient(to left, transparent, rgba(56, 189, 248, 0.18), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
  animation: footer-sweep-rtl 5.2s infinite cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

@keyframes footer-sweep-rtl {
  0% { right: -50%; }
  35% { right: 150%; }
  100% { right: 150%; }
}

[data-theme="light"] .site-footer {
  background-color: #151f2e;
  background-image: 
    linear-gradient(135deg, rgba(21, 31, 46, 0.94) 0%, rgba(27, 39, 57, 0.97) 100%),
    url('assets/ai_agents_bg.jpg');
}

[data-theme="light"] .site-footer::before {
  background: linear-gradient(to left, transparent, rgba(116, 170, 255, 0.24), transparent);
  animation: footer-sweep-rtl 4.5s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  position: relative;
  z-index: 2;
}

.footer-logo {
  margin-bottom: var(--space-md);
}

.footer-tagline {
  color: #cbd5e1;
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: var(--space-md);
}

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

.footer-links li {
  margin-bottom: var(--space-xs);
}

.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-link-inline {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast), text-decoration var(--transition-fast);
}

.footer-link-inline:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-contact p {
  color: #cbd5e1;
  font-size: 0.9rem;
  margin-bottom: var(--space-2xs);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
  background-color: rgba(0, 0, 0, 0.35);
  position: relative;
  z-index: 2;
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #cbd5e1;
}

.integrity-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   13. Breakpoints Responsivos Obrigatórios (375px, 768px, 1024px, 1280px)
   -------------------------------------------------------------------------- */

/* Layout Médio (max-width: 1024px) */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    text-align: center;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-visual-card {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .solutions-showcase-card {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-card-highlight {
    grid-column: span 2;
  }
}

/* Tablet (max-width: 768px) */
@media (max-width: 768px) {
  .header-container {
    height: 78px;
  }

  .header-logo-img {
    height: 56px;
    max-width: 190px;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 78px;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-lg) var(--space-md);
    box-shadow: var(--shadow-lg);
  }

  [data-theme="light"] .main-nav {
    background-color: #1b2739;
  }

  .main-nav.active {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
  }

  .nav-link {
    padding: var(--space-sm) 0;
    display: block;
  }

  .nav-btn-cta {
    text-align: center;
  }

  .hero-trust-bar {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .commitment-box {
    flex-direction: column;
    text-align: center;
    padding: var(--space-xl);
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-bottom-content {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
}

/* Mobile Estrito / Viewport 375px (max-width: 540px) */
@media (max-width: 540px) {
  .header-container {
    height: 72px;
  }

  .header-logo-img {
    height: 48px;
    max-width: 165px;
  }

  .footer-logo-img {
    height: 50px;
    max-width: 175px;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card-highlight {
    grid-column: span 1;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .contact-info-card, .contact-form-card {
    padding: var(--space-lg);
  }
}