/* ==========================================================================
   Base — reset, elements, typography primitives, layout & motion utilities
   ========================================================================== */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

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

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

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

ul,
ol {
  list-style: none;
  padding: 0;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--r-xs);
}

::selection {
  background: var(--c-green-700);
  color: var(--c-bone-50);
}

/* ---------- Headings ---------- */

.display,
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: var(--lh-snug);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h1 { font-size: var(--fs-d1); }
h2 { font-size: var(--fs-d2); }
h3 { font-size: var(--fs-h3); }

.display em,
h1 em, h2 em, h3 em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

p { text-wrap: pretty; }

/* ---------- Layout utilities ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

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

.section--tight { padding-block: clamp(3.5rem, 6vw, 6.5rem); }

.stack { display: grid; }
.stack--8 { gap: var(--sp-8); }
.stack--16 { gap: var(--sp-16); }
.stack--24 { gap: var(--sp-24); }
.stack--32 { gap: var(--sp-32); }

.hairline {
  height: 1px;
  border: 0;
  background: var(--border);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -120%);
  z-index: calc(var(--z-lightbox) + 10);
  padding: 0.75rem 1.5rem;
  background: var(--c-green-700);
  color: var(--c-bone-50);
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus-visible { transform: translate(-50%, 0); }

/* ---------- Text utilities ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-muted);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.55;
}

.eyebrow--dot::before {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 1;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--text-soft);
  font-weight: 300;
}

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

.label {
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}

.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* ---------- Section headers ---------- */

.section-head {
  display: grid;
  gap: var(--sp-24);
  margin-bottom: clamp(2.5rem, 5vw, 5rem);
}

@media (min-width: 900px) {
  .section-head--split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(2rem, 5vw, 5rem);
  }
  .section-head--split .section-head__aside { padding-bottom: 0.6rem; }
}

.section-head__title { max-width: 22ch; }
.section-head__aside { max-width: 46ch; }

/* ---------- Motion: scroll reveal ----------
   Scoped to `.js`: without scripting nothing is hidden in the first place. */

.js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition:
    opacity var(--dur-reveal) var(--ease-expo),
    transform var(--dur-reveal) var(--ease-expo);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

.js [data-reveal="mask"] {
  clip-path: inset(0 0 100% 0);
  transform: none;
  transition:
    opacity var(--dur-slow) var(--ease-expo),
    clip-path var(--dur-reveal) var(--ease-expo);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  clip-path: inset(0 0 0 0);
}

/* Word-by-word reveal for display headlines */
.split-line { display: block; overflow: hidden; }
.js .split-word {
  display: inline-block;
  transform: translate3d(0, 105%, 0);
  transition: transform 1000ms var(--ease-expo);
  transition-delay: calc(var(--i, 0) * 42ms);
}
.js .is-visible .split-word { transform: translate3d(0, 0, 0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; clip-path: none; }
  .js .split-word { transform: none; }
}