/* Reset, typography base, focus, motion preference */

*, *::before, *::after { box-sizing: border-box; }
html, body, ul, ol, dl, dd, figure, h1, h2, h3, h4, p { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

html {
  background: var(--deep);
  color-scheme: dark;
  scroll-behavior: auto; /* Lenis / JS handles smooth scroll on desktop */
}

body {
  background: var(--deep);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

html[lang="bn"] body { font-family: var(--font-bn), var(--font-body); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--ivory);
}

em, .italic-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--brass-lit);
}

p { max-width: 75ch; }
p.measure-tight { max-width: 60ch; }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass);
}

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

@media (max-width: 900px) {
  .container { padding-inline: var(--sp-4); }
}

section[id] { scroll-margin-top: 96px; }

/* focus visibility */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: var(--sp-3);
  top: -60px;
  background: var(--brass);
  color: var(--deep);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--sp-1);
  font-family: var(--font-mono);
  font-size: 13px;
  z-index: 1000;
  transition: top .2s var(--ease);
}
.skip-link:focus-visible { top: var(--sp-3); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}