/* ==========================================================================
   Base: reset, typography, layout primitives, utilities
   ========================================================================== */

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

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-text);
  background: var(--c-surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

main { flex: 1; }
main:focus { outline: none; }

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

h1, h2, h3, h4 {
  margin: 0 0 var(--sp-4);
  font-family: var(--ff-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: -.02em;
  color: var(--c-ink);
  text-wrap: balance;
}
h1 { font-size: var(--fs-3xl); font-weight: 700; }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-md); line-height: var(--lh-snug); letter-spacing: -.01em; }
h4 { font-size: var(--fs-base); }

p { margin: 0 0 var(--sp-4); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--c-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}
a:hover { color: var(--c-primary-hover); }

ul, ol { margin: 0; padding: 0; }
ul[class], ol[class] { list-style: none; }

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

strong { color: var(--c-ink); font-weight: 600; }

/* Visible, consistent focus for keyboard users */
:focus-visible {
  outline: 3px solid var(--c-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--c-aqua-100); color: var(--c-ink); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--tint { background: var(--c-surface-2); }
.section--tight { padding-block: calc(var(--section-y) * .6); }

.section-head {
  max-width: 720px;
  margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
}
.section-head--center { margin-inline: auto; text-align: center; }
.section-head p { font-size: var(--fs-md); color: var(--c-muted); }

.section-head--split {
  max-width: none;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-5);
}
.section-head--split > div { max-width: 640px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: var(--sp-4);
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-primary);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--g-brand);
}
.eyebrow--light { color: var(--c-aqua-400); }

.lead { font-size: var(--fs-md); color: var(--c-muted); }

.grid { display: grid; gap: var(--sp-5); }

/* ---------- Utilities ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: .75rem 1.25rem;
  border-radius: var(--r-sm);
  background: var(--c-navy-800);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--t-fast);
}
.skip-link:focus { transform: none; color: #fff; }

.icon { width: 1.25em; height: 1.25em; flex-shrink: 0; }

.text-gradient {
  background: var(--g-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

[hidden] { display: none !important; }

/* ---------- Scroll reveal ----------
   main.js adds .reveal-pending only to elements that start below the fold
   (so nothing visible ever flashes), then .is-visible when they scroll in. */
[data-reveal].reveal-pending {
  opacity: 0;
  transform: translateY(24px);
}
[data-reveal].reveal-pending.is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal].reveal-pending { opacity: 1; transform: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}