/* ==========================================================================
   BASE — reset, typography, shared utilities, buttons, accessibility helpers
   Loaded on every page, right after tokens.css.
   ========================================================================== */

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-style: italic; }
::selection { background: var(--ink); color: var(--paper); }

/* ---- Layout container ---- */
.wrap { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

/* ---- Small uppercase label with a leading line ---- */
.eyebrow {
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase; font-weight: 600;
  color: var(--muted); display: flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .6; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 48px; padding: 0 24px; border-radius: 999px;
  font-weight: 600; font-size: 15px;
  transition: transform .3s var(--ease), background .3s, color .3s, box-shadow .3s, border-color .3s;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -10px rgba(15, 39, 66, .55); }
.btn-ghost { border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn .arr { transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(3px); }

/* ---- Accessibility ---- */
/* Visible focus ring for keyboard users only */
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.btn:focus-visible { border-radius: 999px; }

/* "Skip to content" link — hidden until a keyboard user presses Tab */
.skip-link {
  position: fixed; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: var(--paper); padding: 10px 18px; border-radius: 8px;
  font-weight: 600; font-size: 14px; transition: top .2s;
}
.skip-link:focus { top: 16px; }

/* Content read by screen readers but not shown on screen */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* ---- Scroll-reveal animation (triggered by assets/js/components/reveal.js) ---- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal="2"] { transition-delay: .12s; }
[data-reveal="3"] { transition-delay: .24s; }

/* ---- Respect "reduce motion" system setting ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}