/* ==========================================================================
   Base, reset, light grid background, ambient effects, helpers.
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

/* ---- Lenis smooth scroll (slick momentum) ----------------------------- */
html.lenis, html.lenis body { height: auto; }
html.lenis { scroll-behavior: auto !important; } /* let Lenis own the easing */
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-smooth iframe { pointer-events: none; }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* ---- The light grid, fixed behind everything on light areas ----------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 38px 38px;
  background-position: center top;
  pointer-events: none;
}
/* ---- Quiet ambient glows, do not distract ----------------------------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(38vw 38vw at 8% -4%, rgba(31, 194, 133, 0.16), transparent 70%),
    radial-gradient(34vw 34vw at 98% 8%, rgba(22, 182, 194, 0.12), transparent 70%),
    radial-gradient(40vw 40vw at 50% 108%, rgba(31, 194, 133, 0.10), transparent 70%);
  pointer-events: none;
}

img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
ul { list-style: none; }

h1, h2, h3, h4 {
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance; /* avoid a lone word on the last line */
}

p { text-wrap: pretty; } /* prevent single-word widows in body copy */

em, .serif-em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.01em;
}

::selection { background: var(--green-400); color: var(--accent-ink); }
:focus-visible { outline: 2px solid var(--green-500); outline-offset: 3px; border-radius: 6px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- Layout helpers --------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--page-x); }
.container--wide { max-width: var(--container-wide); }
.section { padding-block: clamp(4rem, 2.5rem + 7vw, 8rem); position: relative; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green-600);
}
.eyebrow::before {
  content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--green-500); opacity: 0.95;
}

/* ---- Dark section wrapper --------------------------------------------- */
.dark {
  background: var(--green-900);
  color: var(--on-dark-2);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.dark h1, .dark h2, .dark h3, .dark h4 { color: var(--on-dark); }
.dark .eyebrow { color: var(--green-300); }
.dark .eyebrow::before { background: var(--green-300); }
/* dark sections get their own faint grid + glow */
.dark::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--grid-line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line-dark) 1px, transparent 1px);
  background-size: 38px 38px;
}
.dark::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(36vw 36vw at 12% 0%, rgba(31, 194, 133, 0.18), transparent 70%),
    radial-gradient(30vw 30vw at 92% 100%, rgba(22, 182, 194, 0.14), transparent 70%);
}

/* ---- Reveal on scroll: content slides into place like ice ------------- */
.reveal { opacity: 0; transform: translateY(46px); transition: opacity 0.5s var(--ease-slide), transform 0.5s var(--ease-slide); }
.reveal.is-in { opacity: 1; transform: none; }
/* directional slides for side-by-side sections */
.reveal--left { transform: translateX(-60px); }
.reveal--right { transform: translateX(60px); }
.reveal[data-delay="1"] { transition-delay: 0.05s; }
.reveal[data-delay="2"] { transition-delay: 0.1s; }
.reveal[data-delay="3"] { transition-delay: 0.15s; }

.text-center { text-align: center; }
.max-w-md { max-width: 720px; margin-inline: auto; }
.max-w-sm { max-width: 540px; margin-inline: auto; }

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

/* Honeypot: hidden from people, bots fill it and get rejected */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }