/* ==========================================================================
   GRU — Base, layout primitives, navigation, loader, components
   ========================================================================== */

/* --- Reset ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; padding: 0; }
ul[role="list"], ol[role="list"] { list-style: none; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--t-base);
  font-weight: 400;
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

/* --- Accessibility -------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--green-live);
  outline-offset: 3px;
}
.on-dark :focus-visible, .on-ink :focus-visible {
  outline-color: var(--cream);
}

.skip-link {
  position: absolute;
  top: var(--s-3); left: var(--s-3);
  z-index: 200;
  padding: var(--s-4) var(--s-5);
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  transform: translateY(-160%);
  transition: transform var(--d-base) var(--e-out);
}
.skip-link:focus { transform: translateY(0); }

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

/* --- Layout --------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  background: var(--bg);
  color: var(--fg);
  padding-block: var(--section-y);
  z-index: var(--z-content);
}

.section--flush { padding-block: 0; }

/* Asymmetric editorial grid. Content sits on a 12-col field. */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(1rem, 2.4vw, 2.5rem);
  row-gap: var(--s-6);
}

/* --- Typography ----------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--lh-display);
  letter-spacing: var(--tr-display);
  text-wrap: balance;
}

.display--mega {
  font-size: var(--t-mega);
  font-weight: 800;
  letter-spacing: var(--tr-mega);
  text-transform: uppercase;
}

.display--xxl { font-size: var(--t-xxl); font-weight: 700; }
.display--xl  { font-size: var(--t-xl);  font-weight: 700; }
.display--lg  { font-size: var(--t-lg);  font-weight: 600; letter-spacing: -0.02em; }

.lead {
  font-size: var(--t-lead);
  font-weight: 300;
  line-height: 1.5;
  max-width: 46ch;
  color: var(--fg);
}

.prose {
  font-size: var(--t-base);
  font-weight: 300;
  line-height: var(--lh-body);
  max-width: var(--measure);
  color: var(--fg-muted);
}
.prose strong { font-weight: 500; color: var(--fg); }
.prose + .prose { margin-top: var(--s-5); }

/* The instrument voice — mono, uppercase, wide. Carries indices, labels and
   data. GRU sells diagnosis before spend; the labels should read as readings. */
.label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  line-height: 1;
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.label--lg { font-size: var(--t-label-lg); }
.label--fg { color: var(--fg); }

/* Section eyebrow: index + name, split by a live rule. */
.eyebrow {
  display: flex;
  align-items: baseline;
  gap: var(--s-4);
  margin-bottom: var(--s-7);
}
.eyebrow__index { color: var(--fg); font-weight: 600; }
.eyebrow__rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  transform-origin: left;
  transition: transform 900ms var(--e-out);
}
.js .eyebrow__rule { transform: scaleX(0); }
.js .is-inview .eyebrow__rule { transform: scaleX(1); }

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --btn-bg: var(--green);
  --btn-fg: var(--cream);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 1.15rem 2rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-mono);
  font-size: var(--t-label-lg);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--btn-bg);
  overflow: hidden;
  isolation: isolate;
  transition: color var(--d-base) var(--e-soft),
              border-color var(--d-base) var(--e-soft);
  min-height: 48px;
}

/* Wipe fill, matching the contour sweep language. */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--btn-fg);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--d-base) var(--e-out);
  z-index: -1;
}
.btn:hover::before, .btn:focus-visible::before { transform: scaleY(1); }
.btn:hover, .btn:focus-visible { color: var(--btn-bg); }

.btn__arrow {
  transition: transform var(--d-base) var(--e-out);
  flex: none;
}
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  border-color: var(--fg);
}
.btn--ghost::before { background: var(--fg); }
.btn--ghost:hover, .btn--ghost:focus-visible { color: var(--bg); }

.btn--cream {
  --btn-bg: var(--cream);
  --btn-fg: var(--green);
}
.btn--cream::before { background: var(--green); }
.btn--cream:hover, .btn--cream:focus-visible { color: var(--cream); }

.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

/* Text link with a rule that draws in from the left. */
.link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: var(--t-label-lg);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding-block: var(--s-2);
}
.link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--d-base) var(--e-out);
}
.link:hover::after, .link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* --- Navigation ----------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
  padding: var(--s-5) var(--gutter);
  color: var(--cream);
  transition: transform var(--d-slow) var(--e-out),
              background-color var(--d-slow) var(--e-soft),
              color var(--d-slow) var(--e-soft),
              padding var(--d-slow) var(--e-soft);
}

/* Solid bar once past the hero. */
.nav.is-stuck {
  background: var(--cream);
  color: var(--ink);
  padding-block: var(--s-4);
  border-bottom: 1px solid var(--cream-dim);
}
/* Hide on scroll down, reveal on scroll up. */
.nav.is-hidden { transform: translateY(-101%); }

.nav__logo {
  display: block;
  padding-block: 0.6rem;   /* 26px glyph -> 45px hit area */
  width: clamp(74px, 8vw, 104px);
  color: currentColor;
  transition: opacity var(--d-base) var(--e-soft);
}
.nav__logo:hover { opacity: 0.7; }
.nav__logo svg { width: 100%; height: auto; fill: currentColor; }

/* Below the desktop breakpoint the links live in the overlay menu instead —
   left visible they overflow the viewport and drag the whole page wide. */
.nav__links { display: none; }

@media (min-width: 60rem) {
  .nav__links {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2.4vw, 2.5rem);
    list-style: none;
  }
}
.nav__link {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  position: relative;
  /* Lifts the hit area from 30px to 44px. The bar's height is already set by
     the CTA button plus the bar's own padding, so the nav does not grow. */
  padding-block: 0.95rem;
  white-space: nowrap;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--d-base) var(--e-out);
}
.nav__link:hover::after,
.nav__link:focus-visible::after,
.nav__link[aria-current="true"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta { display: none; }
@media (min-width: 60rem) {
  .nav__cta { display: inline-flex; padding: 0.85rem 1.5rem; }
}

/* Mobile menu */
.nav__toggle {
  display: grid;
  place-items: center;
  width: 48px; height: 48px;
  margin-right: -12px;
  color: currentColor;
}
.nav__toggle-bars { display: block; width: 22px; height: 10px; position: relative; }
.nav__toggle-bars::before,
.nav__toggle-bars::after {
  content: "";
  position: absolute;
  left: 0; width: 100%; height: 1.5px;
  background: currentColor;
  transition: transform var(--d-base) var(--e-out);
}
.nav__toggle-bars::before { top: 0; }
.nav__toggle-bars::after  { bottom: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bars::before { transform: translateY(4.25px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bars::after  { transform: translateY(-4.25px) rotate(-45deg); }

@media (min-width: 60rem) {
  .nav__toggle { display: none; }
}

.menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: grid;
  align-content: center;
  gap: var(--s-4);
  padding: var(--s-10) var(--gutter) var(--s-8);
  background: var(--green);
  color: var(--cream);
  /* The overlay is painted green, so it needs the inverted token set. Without
     it the muted labels resolve to the light-ground grey and land at 1.06:1. */
  --fg: var(--cream);
  --fg-muted: var(--fg-invert-mut);
  --rule: var(--rule-invert);
  clip-path: inset(0 0 100% 0);
  transition: clip-path var(--d-slow) var(--e-out);
  overflow-y: auto;
}
.menu[data-open="true"] { clip-path: inset(0 0 0 0); }
@media (min-width: 60rem) { .menu { display: none; } }

.menu__link {
  padding-block: 0.35rem;   /* keeps each row past the 44px minimum */
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 3.5rem);
  font-weight: 700;
  letter-spacing: var(--tr-display);
  line-height: 1.06;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--d-base) var(--e-out), transform var(--d-base) var(--e-out);
}
.menu[data-open="true"] .menu__link {
  opacity: 1;
  transform: none;
  transition-delay: calc(60ms * var(--i, 0) + 120ms);
}
.menu__meta {
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px solid var(--rule-invert);
  display: grid;
  gap: var(--s-2);
}

/* --- Loader --------------------------------------------------------------- */
/* Hidden unless scripting is confirmed — without JS the veil would never lift
   and would sit over the whole site permanently. */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: none;
  place-items: center;
  background: var(--green);
  color: var(--cream);
}
.js .loader { display: grid; }
.loader[data-done="true"] {
  clip-path: inset(0 0 100% 0);
  transition: clip-path var(--d-veil) var(--e-out);
  pointer-events: none;
}
.loader__inner {
  display: grid;
  justify-items: center;
  gap: var(--s-5);
  width: min(320px, 62vw);
}
/* The wordmark draws itself, then fills. */
.loader__logo { width: 100%; }
.loader__logo svg { width: 100%; height: auto; }
.loader__logo path {
  fill: var(--cream);
  fill-opacity: 0;
  stroke: var(--cream);
  stroke-width: 1.1;
  stroke-dasharray: var(--len, 400);
  stroke-dashoffset: var(--len, 400);
  animation: draw 1100ms var(--e-out) forwards,
             ink 460ms var(--e-soft) 780ms forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes ink  { to { fill-opacity: 1; stroke-opacity: 0; } }

.loader__bar {
  width: 100%;
  height: 1px;
  background: var(--rule-invert);
  overflow: hidden;
}
.loader__bar span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--cream);
  transform: scaleX(var(--p, 0));
  transform-origin: left;
  transition: transform 220ms var(--e-soft);
}
.loader__pct {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  font-variant-numeric: tabular-nums;
  color: var(--fg-invert-mut);
}

@media (prefers-reduced-motion: reduce) {
  .loader__logo path {
    animation: none;
    fill-opacity: 1;
    stroke-opacity: 0;
  }
  .loader[data-done="true"] { transition-duration: 1ms; }
}

/* --- Scroll reveal --------------------------------------------------------
   Every hidden-until-revealed state is scoped to .js, which an inline script
   in <head> sets. If scripting fails or is blocked, nothing is ever hidden and
   the page degrades to a static document instead of a blank one.
   -------------------------------------------------------------------------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-y, 1.75rem));
  transition: opacity 760ms var(--e-out), transform 760ms var(--e-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.js [data-reveal].is-inview { opacity: 1; transform: none; }

/* Line-by-line headline reveal driven by main.js splitting. */
.line-mask { display: block; overflow: hidden; }
.js .line-mask > span {
  display: block;
  transform: translateY(105%);
  transition: transform 900ms var(--e-out);
  transition-delay: calc(70ms * var(--i, 0));
}
.js .is-inview .line-mask > span { transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal], .line-mask > span, .eyebrow__rule {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .menu, .menu__link { transition-duration: 1ms; }
  .loader { display: none; }
}

/* --- Forms ---------------------------------------------------------------- */
.field { display: grid; gap: var(--s-2); }

.field__label {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-muted);
}
.field__req { color: var(--fg); }

.field__input,
.field__select,
.field__textarea {
  width: 100%;
  min-height: 52px;
  padding: var(--s-3) 0;
  background: transparent;
  color: var(--fg);
  border: 0;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: var(--t-base);
  font-weight: 300;
  transition: border-color var(--d-base) var(--e-soft);
  appearance: none;
}
.field__textarea { min-height: 120px; resize: vertical; padding-block: var(--s-3); }

.field__input:hover, .field__select:hover, .field__textarea:hover { border-color: var(--fg-muted); }
.field__input:focus, .field__select:focus, .field__textarea:focus {
  outline: none;
  border-color: var(--fg);
}
.field__input::placeholder, .field__textarea::placeholder { color: var(--fg-muted); opacity: 0.65; }

.field__select {
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 12px) 55%, calc(100% - 7px) 55%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: var(--s-6);
  cursor: pointer;
}
.field__select option { background: var(--cream); color: var(--ink); }

.field__hint { font-size: var(--t-xs); color: var(--fg-muted); font-weight: 300; }

.field__error {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--danger);
  display: none;
}
.field[data-invalid="true"] .field__error { display: block; }
.field[data-invalid="true"] .field__input,
.field[data-invalid="true"] .field__select,
.field[data-invalid="true"] .field__textarea { border-color: var(--danger); }

/* File input, restyled as a drop plate. */
.field__file {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  min-height: 56px;
  padding: var(--s-3) var(--s-4);
  border: 1px dashed var(--rule);
  transition: border-color var(--d-base) var(--e-soft), background-color var(--d-base) var(--e-soft);
}
.field__file:hover, .field__file:focus-within { border-color: var(--fg); }
.field__file input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.field__file-name {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Honeypot — must stay visually gone but not display:none (bots read that). */
.hp {
  position: absolute !important;
  left: -9999px !important;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

/* Form status message */
.form__status {
  font-family: var(--font-mono);
  font-size: var(--t-label-lg);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--s-4) 0;
  display: none;
}
.form__status[data-state="ok"]   { display: block; color: var(--fg); }
.form__status[data-state="error"]{ display: block; color: var(--danger); }
.form__status[data-state="busy"] { display: block; color: var(--fg-muted); }

/* --- Footer --------------------------------------------------------------- */
.footer {
  background: var(--ink);
  color: var(--cream);
  padding-block: var(--s-9) var(--s-6);
  position: relative;
  z-index: var(--z-content);
}
.footer__top {
  display: grid;
  gap: var(--s-8);
  grid-template-columns: 1fr;
  padding-bottom: var(--s-8);
  border-bottom: 1px solid rgba(241, 239, 219, 0.16);
}
@media (min-width: 48rem) {
  .footer__top { grid-template-columns: 1.4fr 1fr 1fr; gap: var(--s-6); }
}
.footer__logo { width: clamp(140px, 18vw, 210px); }
.footer__logo svg { width: 100%; height: auto; fill: var(--cream); }
/* gap:0 — the links' own block padding provides the separation, so each target
   reaches 44px without inflating the column. */
.footer__col { display: grid; gap: 0; align-content: start; }
.footer__head {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: #8A9990;
  margin-bottom: var(--s-2);
}
.footer__link {
  font-size: var(--t-sm);
  font-weight: 300;
  padding-block: 0.65rem;  /* 23px text -> 44px target */
  transition: opacity var(--d-base) var(--e-soft);
}
.footer__link:hover { opacity: 0.65; }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-5);
  /* Packed left by default. With space-between, a wrapped last item is thrown
     to the right edge — straight under the floating WhatsApp button. */
  justify-content: flex-start;
  align-items: center;
  padding-top: var(--s-6);
}

/* Only spread them apart once all three comfortably share one line. */
@media (min-width: 64rem) {
  .footer__bottom { justify-content: space-between; }
}
.footer__fine {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8A9990;
}

/* Studio credit */
.footer__by { display: inline-flex; align-items: center; gap: 0.4rem; }
.adholic {
  color: var(--cream);
  border-bottom: 1px solid transparent;
  transition: color var(--d-base) var(--e-soft), border-color var(--d-base) var(--e-soft);
}
.adholic:hover, .adholic:focus-visible {
  color: var(--green-live);
  border-bottom-color: currentColor;
}

/* --- WhatsApp float -------------------------------------------------------
   Cream plate with a green rule, so it reads on both the cream and the green
   grounds instead of sinking into one of them. Hard-edged like everything
   else, and it widens on hover to name itself rather than relying on the
   glyph alone. Inverts to green on hover, matching the button wipe.
   -------------------------------------------------------------------------- */
.wa {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: var(--z-nav);
  display: inline-flex;
  align-items: center;
  height: 56px;
  padding-inline: 15px;
  background: var(--cream);
  color: var(--green);
  /* 2px, because a hairline of green on the cream sections is nearly invisible
     — cream plate on cream ground. On the green and ink sections the fill
     carries it, so the rule only has to work for the cream case. */
  border: 2px solid var(--green);
  box-shadow: 0 14px 34px rgba(10, 15, 12, 0.30);
  transform: translateY(180%);
  transition: transform var(--d-slow) var(--e-out),
              background-color var(--d-base) var(--e-soft),
              color var(--d-base) var(--e-soft);
}
.wa.is-shown { transform: none; }
.wa:hover, .wa:focus-visible { background: var(--green); color: var(--cream); }
.wa svg { width: 26px; height: 26px; fill: currentColor; flex: none; }

.wa__label {
  display: block;
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: max-width 420ms var(--e-out), margin-left 420ms var(--e-out);
}
.wa:hover .wa__label,
.wa:focus-visible .wa__label { max-width: 12ch; margin-left: 10px; }

@media (prefers-reduced-motion: reduce) {
  .wa { transition: none; }
  .wa__label { transition: none; }
}