/* ============================================================
   CERNE SOLUTIONS — Design System
   Estética: Minimal-Brutalist Tech Professional
   v2.0 · Abril 2026
   ============================================================ */

@import url('https://fonts.bunny.net/css?family=hk-grotesk:300,400,500,600,700,800&display=swap');

/* ============================================================
   TOKENS
   ============================================================ */
:root {
  /* Cores — extraídas da logomarca */
  --bg:              #111111;
  --bg-alt:          #161616;
  --bg-surface:      #1A1A1A;
  --bg-card:         #1E1E1E;
  --bg-card-hover:   #232323;

  --border:          rgba(255, 255, 255, 0.07);
  --border-solid:    #272727;
  --border-strong:   rgba(255, 255, 255, 0.14);

  --text-primary:    #EDEAE2;
  --text-secondary:  #7A7C85;
  --text-muted:      #3D3F47;
  --text-dim:        #4A4C55;

  --accent:          #6B5FC7;
  --accent-light:    #8B7FE8;
  --accent-dim:      rgba(107, 95, 199, 0.12);
  --accent-glow:     rgba(107, 95, 199, 0.2);

  /* Tipografia */
  --font:            'HK Grotesk', 'Inter', system-ui, sans-serif;

  /* Espaçamentos */
  --space-2xs: 0.375rem;
  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 7rem;
  --space-4xl: 10rem;

  /* Tipografia scale */
  --text-xs:   0.7rem;
  --text-sm:   0.8rem;
  --text-base: 0.95rem;
  --text-lg:   1.1rem;
  --text-xl:   1.35rem;
  --text-2xl:  1.75rem;
  --text-3xl:  2.5rem;
  --text-hero: clamp(3.8rem, 9vw, 7.5rem);

  /* Misc */
  --radius:     3px;
  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
  --max-w:      1120px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-xl);
}

/* ============================================================
   LOGO
   ============================================================ */
.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 64px;
  width: auto;
  object-fit: contain;
  mix-blend-mode: screen;
  /* Dissolve o fundo escuro do JPG — apenas cubo e texto ficam visíveis */
}

.logo-sm {
  height: 48px;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
  transition-property: background, border-color, backdrop-filter;
}

.header.scrolled {
  background: rgba(17, 17, 17, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  height: 80px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-left: auto;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  transition: color var(--transition);
}

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

.btn-nav {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  border: 1px solid var(--border-solid);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius);
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.btn-nav:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-dim);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  font-family: var(--font);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  font-family: var(--font);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-solid);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.03);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(80px + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

/* Linha de grade decorativa sutil */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 30% 40%, black 30%, transparent 80%);
  pointer-events: none;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.hero-tag {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.hero-tag-sep {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.hero-headline {
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: var(--space-2xl);
}

.hero-headline-dim {
  color: var(--text-secondary);
}

.hero-body {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  max-width: 900px;
}

.hero-desc {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-start;
}

.hero-rule {
  width: 100%;
  height: 1px;
  background: var(--border);
  margin-bottom: var(--space-2xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding-right: var(--space-xl);
  border-right: 1px solid var(--border);
  padding-left: var(--space-xl);
}

.stat:first-child {
  padding-left: 0;
}

.stat:last-child {
  border-right: none;
}

.stat-n {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-l {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   SECTIONS — BASE
   ============================================================ */
.section {
  padding-block: var(--space-3xl);
  border-bottom: 1px solid var(--border);
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border);
}

.section-index {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  flex-shrink: 0;
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-primary);
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding: var(--space-2xl) var(--space-xl);
  border-right: 1px solid var(--border);
  transition: background var(--transition);
  position: relative;
}

.service-card:last-child {
  border-right: none;
}

.service-card:hover {
  background: var(--bg-card-hover);
}

.service-num {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.service-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.service-title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
}

.service-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.75;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-light);
  background: var(--accent-dim);
  border: 1px solid rgba(107, 95, 199, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
}

/* ============================================================
   PILLARS (Como trabalhamos)
   ============================================================ */
.pillars-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pillar {
  padding: var(--space-2xl) var(--space-xl);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  transition: background var(--transition);
}

.pillar:last-child {
  border-right: none;
}

.pillar:hover {
  background: rgba(255, 255, 255, 0.02);
}

.pillar-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-light);
}

.pillar-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-statement {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about-statement p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-meta {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.about-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.about-meta-item:last-child {
  border-bottom: none;
}

.about-meta-item:hover {
  background: rgba(255,255,255,0.02);
}

.about-meta-key {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.about-meta-val {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
}

/* ============================================================
   CONTACT
   ============================================================ */
.section-contact {
  padding-block: var(--space-4xl);
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: end;
}

.contact-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--text-primary);
}

.contact-right {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding-block: var(--space-xl);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.footer-left {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.footer-status {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.footer-email {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

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

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --space-3xl: 5rem;
    --space-4xl: 7rem;
  }

  .hero-body {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero-actions {
    flex-direction: row;
  }

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

  .service-card,
  .pillar {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .service-card:last-child,
  .pillar:last-child {
    border-bottom: none;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-lg);
  }

  .header-status {
    display: none;
  }

  .header-nav {
    gap: var(--space-lg);
  }

  .hero {
    padding-top: calc(60px + var(--space-2xl));
    padding-bottom: var(--space-2xl);
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .stat {
    border-right: none;
    padding-left: 0;
    padding-right: 0;
  }

  .stat:nth-child(1),
  .stat:nth-child(2) {
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--space-xl);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-lg);
  }

  .footer-left {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .footer-right {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .nav-link {
    display: none;
  }

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