/* ==========================================================================
   ADRIAN HAELISSON - AUTOMAÇÕES CORPORATIVAS & ENGENHARIA DE SOFTWARE
   Design Language: Minimalist Editorial & High-Contrast Commercial
   Inspirado no design minimalista da Anthropic, Linear e Vercel
   Foco Comercial, Executivo e de Alto Valor Agregado
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variáveis & Tokens de Design (Dark / Light)
   -------------------------------------------------------------------------- */
:root, [data-theme="dark"] {
  /* Cores Base - Deep Carbon / Obsidian */
  --bg-page: #0a0a0c;
  --bg-surface: #121215;
  --bg-surface-elevated: #18181c;
  --bg-surface-subtle: #141418;
  --bg-callout: #16161a;
  --header-bg: rgba(10, 10, 12, 0.85);
  --input-bg: #0a0a0c;

  /* Tipografia */
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-inverse: #09090b;

  /* Bordas e Divisores Sóbrios */
  --border-subtle: #1e1e23;
  --border-medium: #2a2a30;
  --border-focus: #52525b;

  /* Identidade Visual & Botões */
  --logo-color: #ffffff;
  --btn-primary-bg: #ffffff;
  --btn-primary-text: #09090b;
  --btn-primary-hover: #e4e4e7;
  
  --accent-white: #ffffff;
  --accent-stone: #d4d4d8;
  --accent-green: #10b981;

  color-scheme: dark;
}

[data-theme="light"] {
  /* Cores Base - Off-White Editorial & Pure Surface */
  --bg-page: #fafafa;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f4f4f5;
  --bg-surface-subtle: #f8f8f9;
  --bg-callout: #f4f4f6;
  --header-bg: rgba(250, 250, 250, 0.88);
  --input-bg: #ffffff;

  /* Tipografia */
  --text-primary: #09090b;
  --text-secondary: #52525b;
  --text-muted: #71717a;
  --text-inverse: #ffffff;

  /* Bordas e Divisores Sóbrios */
  --border-subtle: #e4e4e7;
  --border-medium: #d4d4d8;
  --border-focus: #18181b;

  /* Identidade Visual & Botões */
  --logo-color: #09090b;
  --btn-primary-bg: #09090b;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #27272a;

  --accent-white: #09090b;
  --accent-stone: #52525b;
  --accent-green: #059669;

  color-scheme: light;
}

:root {
  /* Tipografia */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Consolas, monospace;

  /* Estrutura */
  --container-max: 1220px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transições Sutis */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.15s;
  --duration-normal: 0.25s;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--duration-normal) var(--ease-out), color var(--duration-normal) var(--ease-out);
}

.header, .case-study-card, .service-card, .engagement-card, .channel-card, .contact-quick-form, .case-impact-panel, .platform-badge, .case-tag, .form-input, .footer {
  transition: background-color var(--duration-normal) var(--ease-out), border-color var(--duration-normal) var(--ease-out), color var(--duration-normal) var(--ease-out);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
}

button, input, select, textarea {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* --------------------------------------------------------------------------
   3. Header & Navegação
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 0;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: padding var(--duration-normal) var(--ease-out), background var(--duration-fast), border-color var(--duration-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.75rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.brand-logo-svg {
  width: 23px;
  height: 17px;
  color: var(--logo-color);
  fill: var(--logo-color);
  display: block;
  flex-shrink: 0;
  transition: fill var(--duration-fast), color var(--duration-fast);
}

.brand-logo-svg polygon {
  fill: inherit;
}

.brand-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  white-space: nowrap;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

.btn-whatsapp-header {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.btn-whatsapp-header svg {
  flex-shrink: 0;
}

/* Botão Alternador de Tema (Sun/Moon) */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  padding: 0;
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.theme-toggle-btn svg {
  width: 17px;
  height: 17px;
}

/* Exibir Sol no Dark Mode, Lua no Light Mode */
.theme-toggle-btn .theme-icon-sun {
  display: block;
}
.theme-toggle-btn .theme-icon-moon {
  display: none;
}

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

/* --------------------------------------------------------------------------
   4. Botões Estilo Anthropic / Linear
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-surface);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.85rem 1.6rem;
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   5. Hero Section (Comercial & Editorial)
   -------------------------------------------------------------------------- */
.hero {
  padding-top: 10rem;
  padding-bottom: 6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-content {
  max-width: 860px;
}

.hero-meta-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-meta-label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-primary);
}

.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 1.75rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 2.75rem;
  max-width: 780px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 4.5rem;
}

/* Grade de Métricas Reais */
.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.metric-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   6. Seções Globais
   -------------------------------------------------------------------------- */
.section {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  margin-bottom: 4rem;
  max-width: 760px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  display: block;
}

.section-heading {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-subtext {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   6.5. Dores Críticas do Escritório Contábil
   -------------------------------------------------------------------------- */
.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-bottom: 4rem;
}

.pain-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid #ef4444;
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.pain-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  border-left-color: #ef4444;
  transform: translateY(-2px);
}

.pain-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: #ef4444;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.pain-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}

.pain-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.pain-solution-badge {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.84rem;
  color: var(--accent-green);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --------------------------------------------------------------------------
   7. Casos de Sucesso & Resultados Comerciais (Sem código)
   -------------------------------------------------------------------------- */
.case-studies-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.case-study-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  transition: border-color var(--duration-normal) var(--ease-out);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

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

.case-info {
  display: flex;
  flex-direction: column;
}

.case-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.case-tag {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.case-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.25;
}

.case-description {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.case-narrative {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

.narrative-item {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.narrative-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.case-platforms-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.platform-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* Painel de Impacto Comercial do Caso */
.case-impact-panel {
  background: var(--bg-callout);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.impact-metric-block {
  display: flex;
  flex-direction: column;
}

.impact-metric-num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.impact-metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.impact-quote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
}

/* --------------------------------------------------------------------------
   8. Seção de Soluções & Serviços Estruturados
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--duration-normal) var(--ease-out);
}

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

.service-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.service-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.service-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.service-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.service-items li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  line-height: 1.5;
}

.service-items li::before {
  content: '✓';
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   9. Modelos de Contratação
   -------------------------------------------------------------------------- */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.engagement-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

.engagement-card.featured {
  border-color: var(--border-focus);
  background: var(--bg-surface-elevated);
}

.engagement-type {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.engagement-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.engagement-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.engagement-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.engagement-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.engagement-list li::before {
  content: '—';
  color: var(--border-focus);
}

/* --------------------------------------------------------------------------
   10. Seção Sobre
   -------------------------------------------------------------------------- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.about-credentials {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.cred-block {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.cred-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.cred-val {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.about-body p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.about-body strong {
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   11. Seção de Contato Comercial
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.channel-card-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.channel-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.channel-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  transform: translateX(4px);
}

.channel-info-group {
  display: flex;
  flex-direction: column;
}

.channel-title {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
}

.channel-detail {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.2rem;
}

.contact-quick-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: var(--input-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--duration-fast), background-color var(--duration-fast);
}

.form-input:focus {
  border-color: var(--border-focus);
}

/* --------------------------------------------------------------------------
   11.5. Terminal de Telemetria ao Vivo & Projetos em Produção
   -------------------------------------------------------------------------- */
.terminal-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 3.5rem 0 1.5rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.terminal-header {
  background: var(--bg-surface-elevated);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

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

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ef4444; }
.terminal-dot.yellow { background: #f59e0b; }
.terminal-dot.green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  min-height: 150px;
  max-height: 220px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.65;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--bg-page);
}

.terminal-line {
  word-break: break-all;
}

.term-cyan { color: #06b6d4; }
.term-green { color: #10b981; }
.term-blue { color: #3b82f6; }
.term-yellow { color: #f59e0b; }
.term-dim { color: var(--text-muted); }

/* Showcase de Projetos & Filtros */
.projects-filter-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.filter-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
  font-weight: 600;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: all var(--duration-normal) var(--ease-out);
}

.project-card:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.project-header-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.project-category-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.project-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.project-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  line-height: 1.35;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.project-impact-box {
  background: var(--bg-callout);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.84rem;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
  margin-top: auto;
}

.tech-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.project-footer-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

/* Modal de Arquitetura & Código */
#project-detail-modal {
  display: none !important;
}

#project-detail-modal.open {
  display: flex !important;
}

.project-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.project-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  background: var(--bg-surface-elevated);
}

.modal-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.modal-close-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  transition: all var(--duration-fast);
}

.modal-close-btn:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.modal-content-scroll {
  padding: 1.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.modal-section-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.modal-diagram-pre {
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-stone);
  overflow-x: auto;
  line-height: 1.45;
  white-space: pre;
}

.modal-code-wrapper {
  position: relative;
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.modal-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

.modal-code-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.modal-code-snippet {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  overflow-x: auto;
  line-height: 1.55;
  max-height: 280px;
  white-space: pre;
}

.modal-footer {
  padding: 1rem 1.75rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  background: var(--bg-surface-elevated);
}

/* Calculadora Interativa de ROI */
.roi-calculator-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  margin-top: 2rem;
}

.roi-inputs-col {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.roi-slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.roi-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.roi-slider-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.roi-slider-val {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.roi-range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-medium);
  outline: none;
}

.roi-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text-primary);
  cursor: pointer;
  border: 2px solid var(--bg-surface);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.2);
}

.roi-results-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-sm);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
}

.roi-metric-highlight {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.roi-metric-hero-num {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent-green);
  font-family: var(--font-mono);
  line-height: 1.1;
}

.roi-metric-hero-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.roi-secondary-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.roi-sub-metric {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.roi-sub-num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.roi-sub-desc {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* Matriz de Habilidades no Sobre */
.skills-matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-category-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skill-cat-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

.skill-tags-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}


.footer {
  padding: 3.5rem 0;
  background: var(--bg-page);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.footer-link:hover {
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   13. Responsividade
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-metrics-grid,
  .services-grid,
  .engagement-grid,
  .projects-grid,
  .roi-calculator-box,
  .skills-matrix-grid,
  .pain-points-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .case-study-card {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }

  .about-layout,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 1080px) {
  .nav-links {
    gap: 1.15rem;
  }
  .nav-link {
    font-size: 0.84rem;
  }
}

@media (max-width: 900px) {
  .header {
    padding: 1rem 0;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 7.5rem;
    padding-bottom: 4rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}

/* ==========================================================================
   ELEMENTOS DE CONFORMIDADE, LGPD & DISCLAIMER LEGAL
   ========================================================================== */
.footer-legal-disclaimer {
  width: 100%;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer-legal-disclaimer p {
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 900px;
  margin: 0 auto;
}

.footer-legal-disclaimer strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.lgpd-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  line-height: 1.4;
}

.lgpd-note svg {
  flex-shrink: 0;
  stroke: var(--accent-green);
}

.terminal-demo-badge {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.compliance-callout {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-green);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0 2rem;
}

.compliance-callout-icon {
  color: var(--accent-green);
  display: flex;
  align-items: center;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.compliance-callout-text {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.compliance-callout-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.modal-code-header-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.74rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.modal-code-header-meta span.badge-conceptual {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 500;
}