/* ── Scrollbar ── */
::-webkit-scrollbar        { width: 5px; }
::-webkit-scrollbar-track  { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb  { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ── Body ── */
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--t-base), color var(--t-base);
  cursor: none;
}

@media (pointer: coarse) {
  body { cursor: auto; }
}

/* ── Headings ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ── Container ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ── Section ── */
section {
  padding: var(--sp-24) 0;
}

/* ── Grain/noise texture — premium feel, ~2.5% opacity ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9990;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='256' height='256'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ── Section label ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-12);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

/* Garante que header, main e footer ficam acima do canvas fixo */
.header, main, footer { position: relative; z-index: 1; }

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 9999;
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* ── Utilities ── */
.accent { color: var(--accent); }

/* ── Utility: visually hidden ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}