:root {
  color-scheme: dark;
  --color-bg: #0a0a0a;
  --color-bg-elevated: #161412;
  --color-text: #f2f0ec;
  --color-text-muted: #a8a29a;
  --color-accent: #ff6a1a;
  --color-accent-dim: #cc5514;
  --color-border: #2a2622;

  --font-sans: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', monospace;

  --text-hero: clamp(2.5rem, 1.5rem + 5vw, 5rem);
  --text-h2: clamp(1.75rem, 1.4rem + 2vw, 2.75rem);
  --text-body: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);

  --space-section: clamp(4rem, 3rem + 5vw, 8rem);
  --space-md: clamp(1rem, 0.8rem + 1vw, 2rem);

  --duration-normal: 300ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.5;
}

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

h1, h2, h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 var(--space-md);
}

a { color: var(--color-accent); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 500;
  text-decoration: none;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              background var(--duration-normal) var(--ease-out-expo);
}
.btn-primary {
  background: var(--color-accent);
  color: #0a0a0a;
}
.btn-primary:hover { background: var(--color-accent-dim); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }

.site-header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem var(--space-md);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}
.logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

section {
  padding: var(--space-section) var(--space-md);
  max-width: 72rem;
  margin: 0 auto;
}

.site-footer {
  padding: var(--space-md);
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border-top: 1px solid var(--color-border);
}

.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-md);
}
.hero h1 { font-size: var(--text-hero); max-width: 20ch; }
.hero-lead { color: var(--color-text-muted); max-width: 40ch; font-size: 1.1rem; }
.hero-actions { margin-top: var(--space-md); }

.servicos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.servico-card {
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}
.servico-card h3 { font-size: 1.15rem; color: var(--color-accent); }
.servico-card p { color: var(--color-text-muted); margin: 0; }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.portfolio-item {
  position: relative;
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-elevated);
  border: 1px dashed var(--color-border);
  border-radius: 0.5rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.portfolio-item::before {
  content: attr(data-categoria);
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-size: 0.7rem;
  color: var(--color-accent);
}

.contato-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

section > * {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              transform var(--duration-normal) var(--ease-out-expo);
}
section > *.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  section > * { opacity: 1; transform: none; }
}