/* ==========================================================================
   ClaudIn — Base & reset
   ========================================================================== */

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

* { margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background: var(--bg);
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  font-weight: 400;
  -webkit-text-size-adjust: 100%;
  transition: background-color 0.5s var(--ease), color 0.5s var(--ease);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p { text-wrap: pretty; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol { list-style: none; }

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

/* Mono utility */
.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 400;
}

.muted { color: var(--muted); }
.accent { color: var(--accent); }

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: var(--bg);
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.skip-link:focus { left: 0; }

/* Reveal animation base state (JS adds .is-in) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}