/* ═══════════════════════════════════════════
   base.css — Reset, typography, layout primitives
   Max: 500 lines. No component styles here.
   ═══════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: rgba(167, 139, 250, 0.2); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Layout ── */
.page {
  max-width: var(--page-w);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

.narrow { max-width: var(--narrow); }

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

.section-border { border-top: 1px solid var(--line); }

/* ── Typography ── */
.mega {
  font-family: var(--font-display);
  font-size: var(--fs-mega);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.hero-text {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: var(--lh-heading);
  letter-spacing: -0.04em;
}

h2, .h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

h3, .h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}
.eyebrow .n { color: var(--vi); }

.body-text {
  color: var(--ink-2);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  max-width: var(--measure);
}

.vi { color: var(--vi); }
.vi-glow {
  color: var(--vi);
  text-shadow: 0 0 40px rgba(167, 139, 250, 0.3);
}

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

.mt-block { margin-top: var(--gap-block); }
.mt-group { margin-top: var(--gap-group); }

/* ── Scroll reveal (JS adds .is-visible) ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

[data-reveal-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
[data-reveal-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
[data-reveal-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
[data-reveal-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
[data-reveal-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }