/* ─────────────────────────────────────────────────────────────
   FGSS.io — Vitrine das 8 Engines (Brand Book v2)
   Cores: #050505 (ink), #0A0A0A (surface), #F8F7F2 (bone)
   Acentos: #FF5F1F (ação), #B8FF4D (evidência), #FF8A0A (sol)
   Tipografia: Space Grotesk (display/body) + Space Mono (mono/tags/código)
   Marca: "FGSS /" com barra canônica · Glifo "F" Space Mono 700
   ───────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

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

:root {
  /* Cores Canônicas FGSS */
  --fgss-ink: #050505;
  --fgss-surface: #0A0A0A;
  --fgss-surface-alt: #111111;
  --fgss-bone: #F8F7F2;
  --fgss-bone-muted: rgba(248, 247, 242, 0.72);
  --fgss-bone-subtle: rgba(248, 247, 242, 0.45);
  
  --fgss-acao: #FF5F1F;
  --fgss-acao-hover: #FF773D;
  --fgss-acao-dim: rgba(255, 95, 31, 0.12);
  
  --fgss-evidencia: #B8FF4D;
  --fgss-evidencia-dim: rgba(184, 255, 77, 0.12);
  
  --fgss-sol: #FF8A0A;
  --fgss-sol-dim: rgba(255, 138, 10, 0.12);

  /* Bordas e Divisões */
  --border-subtle: rgba(248, 247, 242, 0.08);
  --border-active: rgba(255, 95, 31, 0.4);

  /* Tipografia */
  --font-sans: 'Space Grotesk', -apple-system, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'Space Mono', monospace;

  /* Trackings Oficiais */
  --track-xl: 0.42em; /* Eyebrow / Sobretítulos em caixa alta */
  --track-lg: 0.20em; /* Metadados e botões secundários */
  --track-md: 0.12em; /* Botões primários */
  --track-tag: 0.10em; /* Tags */
  --track-sm: 0.08em; /* Idioma e notas compactas */

  /* Transições e Movimento */
  --ease-fgss: cubic-bezier(0.16, 1, 0.3, 1);
  --trans-quick: 0.3s var(--ease-fgss);
  --trans-reveal: 0.9s var(--ease-fgss);
}

body {
  background-color: var(--fgss-ink);
  color: var(--fgss-bone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── MOLDURA INSTITUCIONAL (HEADER & FOOTER) ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 max(24px, calc((100vw - 1280px) / 2));
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--fgss-bone);
}

.nav-brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--fgss-acao);
  color: var(--fgss-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-brand-text {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: var(--track-sm);
  font-weight: 700;
}

.nav-brand-text .nav-slash {
  color: var(--fgss-acao);
}

.nav-dim {
  color: var(--fgss-bone-subtle);
  font-weight: 400;
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--fgss-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--track-tag);
  text-transform: uppercase;
  color: var(--fgss-bone-muted);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fgss-evidencia);
  box-shadow: 0 0 8px var(--fgss-evidencia);
}

.nav-return {
  color: var(--fgss-bone-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-sm);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--trans-quick);
}

.nav-return:hover, .nav-return:focus-visible {
  color: var(--fgss-acao);
}

/* ── LAYOUT GERAL ── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* ── HERO DA VITRINE ── */
.hero-showcase {
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-xl);
  text-transform: uppercase;
  color: var(--fgss-acao);
  margin-bottom: 16px;
  display: inline-block;
}

.hero-showcase h1 {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-showcase h1 span {
  color: var(--fgss-acao);
}

.hero-lead {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--fgss-bone-muted);
  max-width: 820px;
  line-height: 1.6;
}

.architecture-note {
  margin-top: 24px;
  display: block;
  background: var(--fgss-surface);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--fgss-acao);
  padding: 10px 16px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--fgss-bone-muted);
  max-width: 100%;
  word-break: break-word;
}

.architecture-note strong {
  color: var(--fgss-bone);
  margin-right: 6px;
}

/* ── GRADE DAS 8 ENGINES ── */
.engines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.card-engine {
  background: var(--fgss-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: transform var(--trans-quick), border-color var(--trans-quick), box-shadow var(--trans-quick);
  position: relative;
}

.card-engine:hover, .card-engine:focus-visible {
  transform: translateY(-4px);
  border-color: var(--border-active);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  outline: none;
}

.card-engine.card-pilot {
  border-color: rgba(255, 95, 31, 0.35);
}

.card-media {
  width: 100%;
  height: 210px;
  background: #000;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.5s var(--ease-fgss);
}

.card-engine:hover .card-media img {
  transform: scale(1.03);
}

.card-media-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--track-tag);
  text-transform: uppercase;
  color: var(--fgss-bone);
}

.card-media-badge.badge-pilot {
  background: var(--fgss-acao);
  color: var(--fgss-ink);
  font-weight: 700;
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-category {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--track-tag);
  text-transform: uppercase;
  color: var(--fgss-bone-subtle);
  margin-bottom: 8px;
}

.card-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.card-problem {
  font-size: 14px;
  color: var(--fgss-bone-muted);
  line-height: 1.55;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-caps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.cap-tag {
  background: var(--fgss-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fgss-bone-muted);
}

.card-footer-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--track-md);
  text-transform: uppercase;
  color: var(--fgss-acao);
}

.card-footer-cta .arrow {
  transition: transform var(--trans-quick);
}

.card-engine:hover .card-footer-cta .arrow {
  transform: translateX(4px);
}

/* ── ESTILOS DE CASE STUDY & LANDING ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-sm);
  color: var(--fgss-bone-subtle);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--fgss-bone-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--fgss-acao);
}

.case-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 64px;
}

.case-hero-content h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.case-hero-lead {
  font-size: 17px;
  color: var(--fgss-bone-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.case-hero-preview {
  background: #000;
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,0.7);
}

.case-hero-preview img {
  width: 100%;
  display: block;
}

/* Botões FGSS */
.btn-acao {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--fgss-acao);
  color: var(--fgss-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: var(--track-md);
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: background var(--trans-quick), transform var(--trans-quick);
  border: none;
  cursor: pointer;
}

.btn-acao:hover, .btn-acao:focus-visible {
  background: var(--fgss-acao-hover);
  transform: translateY(-2px);
  outline: none;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--fgss-bone);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: var(--track-md);
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: all var(--trans-quick);
}

.btn-ghost:hover, .btn-ghost:focus-visible {
  border-color: var(--fgss-bone);
  color: var(--fgss-bone);
  background: var(--fgss-surface);
}

/* Índice de Capítulos */
.chapter-nav {
  background: var(--fgss-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 64px;
}

.chapter-nav-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--track-xl);
  text-transform: uppercase;
  color: var(--fgss-bone-subtle);
  margin-bottom: 12px;
}

.chapter-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
}

.chapter-links a {
  background: var(--fgss-surface-alt);
  border: 1px solid var(--border-subtle);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-sm);
  color: var(--fgss-bone-muted);
  text-decoration: none;
  transition: all var(--trans-quick);
}

.chapter-links a:hover, .chapter-links a:focus-visible {
  border-color: var(--fgss-acao);
  color: var(--fgss-bone);
}

/* Seções de Capítulos */
.case-section {
  margin-bottom: 72px;
  scroll-margin-top: 100px;
}

.case-section h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.case-section p {
  color: var(--fgss-bone-muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.evidence-box {
  background: var(--fgss-surface-alt);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--fgss-evidencia);
  padding: 20px 24px;
  border-radius: 8px;
  margin: 24px 0;
}

.evidence-box-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-tag);
  text-transform: uppercase;
  color: var(--fgss-evidencia);
  margin-bottom: 8px;
  font-weight: 700;
}

.limitation-box {
  background: var(--fgss-surface-alt);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--fgss-sol);
  padding: 20px 24px;
  border-radius: 8px;
  margin: 24px 0;
}

.limitation-box-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track-tag);
  text-transform: uppercase;
  color: var(--fgss-sol);
  margin-bottom: 8px;
  font-weight: 700;
}

/* Landing Page Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 40px 0;
}

.step-card {
  background: var(--fgss-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--fgss-acao);
  margin-bottom: 12px;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--fgss-bone-muted);
}

.access-warning {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--track-sm);
  color: var(--fgss-bone-subtle);
  margin-top: 10px;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px max(24px, calc((100vw - 1280px) / 2));
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fgss-bone-subtle);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ── ACESSIBILIDADE E RESPONSIVIDADE ── */
:focus-visible {
  outline: 2px solid var(--fgss-acao);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .case-hero {
    grid-template-columns: 1fr;
  }
  .engines-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .navbar {
    padding: 0 16px;
  }
  .nav-brand-text .nav-dim {
    display: none;
  }
  .nav-status {
    display: none;
  }
  .nav-return {
    font-size: 11px;
  }
  .container {
    padding: 20px 16px 48px;
  }
  .card-media {
    height: 180px;
  }
  .eyebrow {
    font-size: 10px;
    letter-spacing: var(--track-lg);
    word-break: break-word;
  }
  .hero-showcase h1 {
    font-size: 26px;
    word-break: break-word;
  }
  .architecture-note {
    font-size: 11px;
    padding: 10px 12px;
    display: block;
    line-height: 1.5;
    word-break: break-word;
  }
  .chapter-links {
    flex-direction: column;
    gap: 8px;
  }
  .chapter-links a {
    display: block;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}