/* =================================================
   BASE · Reset, Typography, Utilities, Animations
   ================================================= */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-size: var(--t-body-md);
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11", "kern";
  overflow-x: hidden;
}

/* Paper grain overlay — subtle haptik */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

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

button, input, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

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

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

/* ---------- SKIP LINK ---------- */
.skip-link {
  position: absolute;
  top: var(--s-3);
  left: var(--s-3);
  z-index: 200;
  padding: var(--s-2) var(--s-4);
  background: var(--c-ink);
  color: var(--c-bg);
  font-family: var(--f-mono);
  font-size: var(--t-mono-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 1px;
  transform: translateY(-200%);
  transition: transform var(--dur-fast) var(--ease-out);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

/* ---------- GLOBAL FOCUS-VISIBLE ---------- */
:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 1px;
}

/* Remove focus ring for mouse users, keep for keyboard */
:focus:not(:focus-visible) {
  outline: none;
}

/* ---------- UTILITIES ---------- */
.wrap {
  max-width: var(--col-max);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  position: relative;
  z-index: 2;
}

.mono {
  font-family: var(--f-mono);
  font-size: var(--t-mono-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-ink-muted);
}

.display {
  font-family: var(--f-display);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.display em {
  font-style: italic;
  font-weight: 400;
  color: var(--c-accent);
}

.rule {
  height: 1px;
  background: var(--c-rule);
  border: none;
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }
.reveal-delay-5 { transition-delay: 400ms; }

/* ---------- SPLIT-WORD HERO ANIMATION ---------- */
.split-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: baseline;
}

.split-word > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform var(--dur-slow) var(--ease-out);
}

.split-word.is-visible > span {
  transform: translateY(0);
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .split-word > span {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}