/* base.css — reset, typography, fonts, canvas, shared primitives. */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
/* Lenis manages smooth scroll; disable native when it's active. */
html.lenis,
html.lenis body {
  height: auto;
}
.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-feature-settings: "ss01", "cv01";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  /* faint plasma wash so the page never reads pure-flat-black */
  background-image:
    radial-gradient(120% 80% at 80% -10%, rgba(99, 102, 241, 0.08), transparent 60%),
    radial-gradient(90% 60% at -10% 110%, rgba(34, 211, 238, 0.06), transparent 55%);
  background-attachment: fixed;
}

::selection {
  background: rgba(139, 92, 246, 0.35);
  color: #fff;
}

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

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── WebGL canvas (fixed behind everything) ───────────────────── */
#webgl-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-canvas);
  pointer-events: none;
  /* fades in once the scene is ready */
  opacity: 0;
  transition: opacity 1.4s var(--ease-out);
}
#webgl-canvas.is-ready {
  opacity: 1;
}

main {
  position: relative;
  z-index: var(--z-content);
}

/* ── Layout primitives ────────────────────────────────────────── */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow {
  max-width: var(--maxw-narrow);
}

.section {
  padding-block: var(--section-pad);
  position: relative;
}

/* ── Type primitives ──────────────────────────────────────────── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
}
.eyebrow::before {
  content: "";
  width: 1.8em;
  height: 1px;
  background: var(--line-strong);
}

h1, h2, h3 {
  font-weight: 600;
  line-height: var(--lh-snug);
  letter-spacing: -0.02em;
}

.lead {
  font-size: var(--fs-lead);
  color: var(--ink-dim);
  line-height: 1.5;
  max-width: 46ch;
}

.gradient-text {
  background: var(--plasma);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mono {
  font-family: var(--font-mono);
}

/* ── Buttons / links ──────────────────────────────────────────── */
.btn {
  --pad-y: 0.72rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  padding: var(--pad-y) 1.25rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--ink);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast), background var(--dur-fast), box-shadow var(--dur-fast);
  will-change: transform;
}
.btn:hover {
  border-color: rgba(139, 92, 246, 0.6);
  background: rgba(139, 92, 246, 0.08);
  box-shadow: var(--glow);
}
.btn--primary {
  border-color: transparent;
  background: var(--plasma);
  color: #08090d;
  font-weight: 600;
}
.btn--primary:hover {
  box-shadow: 0 10px 40px rgba(124, 92, 246, 0.45);
}

.link-underline {
  position: relative;
  color: var(--ink-dim);
  transition: color var(--dur-fast);
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}
.link-underline:hover {
  color: var(--ink);
}
.link-underline:hover::after {
  transform: scaleX(1);
}

/* ── Accessibility helpers ────────────────────────────────────── */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: var(--z-nav);
  background: var(--bg-raise-2);
  color: var(--ink);
  padding: 0.7rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus {
  top: 1rem;
}

/* ── Reduced motion: kill transforms/animation, keep legibility ── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  #webgl-canvas {
    transition: none;
  }
}
/* Manual reduced-motion toggle (set on <html>) mirrors the media query. */
html.reduced-motion #webgl-canvas {
  display: none;
}