/* ============================================================
   Voltai — Base / reset layer
   Light, opt-in defaults. Sets the canvas, body type, selection,
   focus-visible ring, and a few brand-level helpers. Components
   never depend on these; they style themselves from tokens.
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font: var(--type-body);
  font-feature-settings: "ss01", "cv01";
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-fg);
}

:where(h1, h2, h3, h4) {
  color: var(--text-strong);
  font-family: var(--font-display);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-tight);
  margin: 0;
}

:where(a) {
  color: var(--accent);
  text-decoration: none;
}
:where(a:hover) {
  color: var(--accent-hover);
}

:where(:focus-visible) {
  outline: var(--ring-width) solid var(--focus-ring);
  outline-offset: var(--ring-offset);
}

:where(code, kbd, samp) {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

/* ---- Brand helpers ---- */

/* Technical eyebrow / spec label — the "VOLTAI™ · NDA RESTRICTED" register */
.v-label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Diffraction-grating microgrid — the Voltai surface texture.
   Layer over any dark surface for the signature wafer look. */
.v-grid-texture {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 14px 14px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}