/* ==========================================================================
   Giroux Technologies — girouxtech.com
   Brand tokens per the GT brand standard. 70s industrial conglomerate.
   ========================================================================== */

:root {
  /* Primary */
  --gt-cyan: #5CE1E6;
  --gt-black: #000000;
  --gt-gray: #9B9B9B;

  /* Secondary */
  --gt-warm-white: #F5F0E8;
  --gt-brass: #C4913B;
  --gt-charcoal: #1A1A1A;

  /* Derived neutrals (brand grays only, no new hues) */
  --gt-rule: #D9D3C9;
  --gt-gray-dark: #6E6E6E;

  --gt-font-stack: "Helvetica Neue", Helvetica, Arial, sans-serif;

  --gt-size-display: 64px;
  --gt-size-h1: 48px;
  --gt-size-h2: 32px;
  --gt-size-h3: 24px;
  --gt-size-h4: 18px;
  --gt-size-body: 16px;
  --gt-size-small: 13px;
  --gt-size-micro: 11px;

  --gt-measure: 640px;
  --gt-wide: 1120px;
  --gt-gutter: 32px;
}

/* --------------------------------------------------------------------------
   Reset / base
   -------------------------------------------------------------------------- */

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: var(--gt-font-stack);
  font-size: var(--gt-size-body);
  font-weight: 400;
  line-height: 1.55;
  color: var(--gt-black);
  background: var(--gt-warm-white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

p { margin: 0 0 20px 0; }
p:last-child { margin-bottom: 0; }

::selection { background: var(--gt-cyan); color: var(--gt-black); }

:focus-visible {
  outline: 2px solid var(--gt-cyan);
  outline-offset: 3px;
}

.gt-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--gt-black);
  color: var(--gt-cyan);
  padding: 12px 20px;
  z-index: 100;
  font-size: var(--gt-size-small);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.gt-skip:focus { left: 0; }

/* --------------------------------------------------------------------------
   Layout primitives
   -------------------------------------------------------------------------- */

.gt-wrap {
  max-width: var(--gt-wide);
  margin: 0 auto;
  padding-left: var(--gt-gutter);
  padding-right: var(--gt-gutter);
}

.gt-section { padding-block: 96px; }

.gt-section--dark {
  background: var(--gt-charcoal);
  color: var(--gt-warm-white);
}

.gt-measure { max-width: var(--gt-measure); }

/* Section marker: 70s technical-manual numbering */
.gt-marker {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 12px;
  font-size: var(--gt-size-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gt-gray-dark);
}
.gt-section--dark .gt-marker { color: var(--gt-gray); }

.gt-marker::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--gt-rule);
}
.gt-section--dark .gt-marker::after { background: #3A3A3A; }

.gt-marker__num { font-weight: 700; color: var(--gt-black); }
.gt-section--dark .gt-marker__num { color: var(--gt-warm-white); }

/* The signature brass rule */
.gt-rule--short { width: 48px; margin-bottom: 14px; }

.gt-rule {
  border: none;
  border-top: 1px solid var(--gt-brass);
  width: 80px;
  margin: 0 0 24px 0;
}

.gt-section__title {
  font-size: var(--gt-size-h2);
  max-width: 18ch;
  margin-bottom: 20px;
}

.gt-lede {
  font-size: var(--gt-size-h4);
  line-height: 1.5;
  max-width: var(--gt-measure);
  color: var(--gt-black);
}
.gt-section--dark .gt-lede { color: var(--gt-warm-white); }

/* --------------------------------------------------------------------------
   Header / nav
   -------------------------------------------------------------------------- */

.gt-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--gt-warm-white);
  border-bottom: 1px solid var(--gt-rule);
}

.gt-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 75px;
}

.gt-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.gt-brand img { height: 22px; width: auto; }
.gt-brand__name {
  font-size: var(--gt-size-small);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.gt-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.gt-nav a {
  white-space: nowrap;
  font-size: var(--gt-size-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--gt-gray-dark);
  padding-block: 4px;
  border-bottom: 1px solid transparent;
  transition: color 120ms linear, border-color 120ms linear;
}
.gt-nav a:hover { color: var(--gt-black); border-bottom-color: var(--gt-black); }

.gt-nav__cta {
  color: var(--gt-black) !important;
  font-weight: 700;
  border-bottom-color: var(--gt-brass) !important;
}

.gt-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--gt-black);
  color: var(--gt-black);
  font-family: inherit;
  font-size: var(--gt-size-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 9px 14px;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   Hero — the cyan-on-black signature
   -------------------------------------------------------------------------- */

.gt-hero {
  background: var(--gt-black);
  color: var(--gt-warm-white);
  padding-block: 128px;
}

.gt-hero__eyebrow {
  font-size: var(--gt-size-micro);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gt-gray);
  margin-bottom: 28px;
}

.gt-hero h1 {
  font-size: var(--gt-size-display);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--gt-cyan);
  max-width: 15ch;
  margin-bottom: 28px;
}

.gt-hero__sub {
  font-size: var(--gt-size-h3);
  font-weight: 400;
  line-height: 1.45;
  color: var(--gt-warm-white);
  max-width: 620px;
  margin-bottom: 18px;
}
/* Second hero line sits under the subhead, one step down in the hierarchy. */
.gt-hero__sub--second {
  font-size: var(--gt-size-h4);
  line-height: 1.55;
  max-width: 600px;
  margin-bottom: 40px;
}

.gt-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
}

.gt-hero__note {
  margin-top: 36px;
  font-size: var(--gt-size-small);
  color: var(--gt-gray);
  max-width: 560px;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.gt-button {
  display: inline-block;
  background: var(--gt-cyan);
  color: var(--gt-black);
  font-family: var(--gt-font-stack);
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 15px 30px;
  border: 1px solid var(--gt-cyan);
  cursor: pointer;
  text-decoration: none;
  transition: background 120ms linear, color 120ms linear;
}
.gt-button:hover { background: var(--gt-black); color: var(--gt-cyan); }

.gt-button--ghost {
  background: transparent;
  color: var(--gt-warm-white);
  border-color: var(--gt-gray-dark);
}
.gt-button--ghost:hover {
  background: var(--gt-warm-white);
  color: var(--gt-black);
  border-color: var(--gt-warm-white);
}

.gt-button--onlight {
  background: var(--gt-black);
  color: var(--gt-warm-white);
  border-color: var(--gt-black);
}
.gt-button--onlight:hover { background: var(--gt-cyan); color: var(--gt-black); border-color: var(--gt-cyan); }

/* --------------------------------------------------------------------------
   Symptoms list
   -------------------------------------------------------------------------- */

.gt-symptoms {
  list-style: none;
  margin: 36px 0 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 48px;
  max-width: 940px;
}
.gt-symptoms li {
  padding: 14px 0;
  border-top: 1px solid var(--gt-rule);
  font-size: var(--gt-size-body);
}
.gt-section--dark .gt-symptoms li { border-top-color: #3A3A3A; }

/* --------------------------------------------------------------------------
   The Walkthrough — product block
   -------------------------------------------------------------------------- */

.gt-product {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: start;
}

.gt-deliverables {
  list-style: none;
  margin: 32px 0 0 0;
  padding: 0;
  counter-reset: deliverable;
}
.gt-deliverables li {
  counter-increment: deliverable;
  position: relative;
  padding: 16px 0 16px 46px;
  border-top: 1px solid var(--gt-rule);
}
.gt-deliverables li::before {
  content: counter(deliverable, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-size: var(--gt-size-micro);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gt-gray-dark);
}

.gt-spec {
  border: 1px solid var(--gt-black);
  background: #FFFFFF;
  padding: 32px;
  position: sticky;
  top: 100px;
}
.gt-spec dl { margin: 0; }
.gt-spec dt {
  font-size: var(--gt-size-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gt-gray-dark);
  margin-bottom: 4px;
}
.gt-spec dd {
  margin: 0 0 22px 0;
  font-size: var(--gt-size-h4);
  font-weight: 700;
  line-height: 1.3;
}
.gt-spec dd:last-of-type { margin-bottom: 26px; }
.gt-spec dd small {
  display: block;
  font-size: var(--gt-size-small);
  font-weight: 400;
  color: var(--gt-gray-dark);
  margin-top: 3px;
}
.gt-spec .gt-button { width: 100%; text-align: center; }

/* --------------------------------------------------------------------------
   Offers
   -------------------------------------------------------------------------- */

.gt-offers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--gt-rule);
  border: 1px solid var(--gt-rule);
  margin-top: 40px;
}
.gt-offer {
  background: var(--gt-warm-white);
  padding: 36px 32px;
}
.gt-offer__num {
  font-size: var(--gt-size-micro);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--gt-gray-dark);
  display: block;
  margin-bottom: 14px;
}
.gt-offer h3 {
  font-size: var(--gt-size-h3);
  margin-bottom: 12px;
}
.gt-offer p {
  margin: 0;
  color: var(--gt-gray-dark);
}

.gt-offers__note {
  margin-top: 28px;
  font-size: var(--gt-size-small);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gt-gray-dark);
}

/* --------------------------------------------------------------------------
   Values
   -------------------------------------------------------------------------- */

.gt-values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 48px 40px;
  margin-top: 48px;
}

.gt-value figure { margin: 0; }

.gt-value__media {
  max-width: 100%;
  background: var(--gt-warm-white);
  border: 1px solid var(--gt-rule);
  overflow: hidden;
}
/* GIFs are cropped to the artwork, so heights differ. Let them size naturally. */
.gt-value__media img {
  width: 100%;
  height: auto;
}

.gt-value figcaption { padding-top: 24px; }
.gt-value h3 {
  font-size: var(--gt-size-h3);
  margin-bottom: 10px;
}
.gt-value p {
  margin: 0;
  color: var(--gt-gray-dark);
  max-width: 34ch;
}

/* --------------------------------------------------------------------------
   Proof
   -------------------------------------------------------------------------- */

.gt-proof {
  margin-top: 48px;
  border-top: 1px solid #3A3A3A;
}
.gt-case {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 48px;
  padding: 44px 0;
  border-bottom: 1px solid #3A3A3A;
}
.gt-case__label {
  font-size: var(--gt-size-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gt-gray);
}
.gt-case__figure {
  display: block;
  font-size: var(--gt-size-h2);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--gt-warm-white);
  margin-top: 10px;
  text-transform: none;
}
.gt-case p {
  margin: 0;
  font-size: var(--gt-size-h4);
  line-height: 1.6;
  color: var(--gt-warm-white);
  max-width: 60ch;
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */

.gt-about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 64px;
  align-items: start;
}
.gt-about p {
  font-size: var(--gt-size-h4);
  line-height: 1.6;
}
.gt-about__photo {
  width: 100%;
  height: auto;
  margin-bottom: 24px;
}
.gt-about__card {
  border-top: 1px solid var(--gt-brass);
  padding-top: 20px;
  font-size: var(--gt-size-small);
  color: var(--gt-gray-dark);
}
.gt-about__card strong {
  display: block;
  color: var(--gt-black);
  font-size: var(--gt-size-body);
  margin-bottom: 2px;
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */

.gt-contact h2 {
  font-size: var(--gt-size-h1);
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--gt-cyan);
  max-width: 16ch;
  margin-bottom: 24px;
}
.gt-contact__lede {
  font-size: var(--gt-size-h4);
  color: var(--gt-warm-white);
  max-width: 560px;
  margin-bottom: 40px;
}
.gt-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  align-items: center;
}
.gt-contact__direct {
  margin-top: 40px;
  font-size: var(--gt-size-small);
  color: var(--gt-gray);
}
.gt-contact__direct a { color: var(--gt-warm-white); text-decoration: none; border-bottom: 1px solid var(--gt-gray-dark); }
.gt-contact__direct a:hover { border-bottom-color: var(--gt-warm-white); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.gt-footer {
  background: var(--gt-black);
  color: var(--gt-gray);
  padding-block: 44px;
  font-size: var(--gt-size-small);
  border-top: 1px solid #262626;
}
.gt-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  justify-content: space-between;
  align-items: center;
}
.gt-footer a { color: var(--gt-cyan); text-decoration: none; }
.gt-footer a:hover { text-decoration: underline; }
.gt-footer p { margin: 0; }
.gt-footer__tag { color: var(--gt-gray-dark); }

/* --------------------------------------------------------------------------
   Motion
   -------------------------------------------------------------------------- */

/* Only hide for the animation when JS is running, so a JS failure can never
   leave a section blank. The .js class is set by an inline script in <head>. */
.js .gt-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms ease-out, transform 500ms ease-out;
}
.js .gt-reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .gt-reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1000px) {
  :root { --gt-size-display: 48px; --gt-size-h1: 38px; --gt-size-h2: 28px; }
  .gt-product { grid-template-columns: 1fr; gap: 44px; }
  .gt-spec { position: static; }
  .gt-values { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gt-about { grid-template-columns: 1fr; gap: 36px; }
  .gt-about__photo { max-width: 360px; }
  .gt-case { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 900px) {
  .gt-nav {
    display: none;
    position: absolute;
    top: 75px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--gt-warm-white);
    border-bottom: 1px solid var(--gt-rule);
    padding: 8px 20px 20px;
  }
  .gt-nav.is-open { display: flex; }
  .gt-nav a { padding: 14px 0; border-bottom: 1px solid var(--gt-rule); }
  .gt-nav a:hover { border-bottom-color: var(--gt-rule); }

  .gt-nav__toggle { display: block; }
}

@media (max-width: 720px) {
  :root {
    --gt-size-display: 38px;
    --gt-size-h1: 32px;
    --gt-size-h2: 25px;
    --gt-size-h3: 20px;
    --gt-gutter: 20px;
  }

  .gt-section { padding-block: 64px; }
  .gt-hero { padding-block: 84px; }

  .gt-symptoms { grid-template-columns: 1fr; gap: 0; }
  .gt-offers { grid-template-columns: 1fr; }
  .gt-values { grid-template-columns: 1fr; gap: 40px; }
  .gt-value p { max-width: none; }
  .gt-hero__actions .gt-button,
  .gt-contact__actions .gt-button { width: 100%; text-align: center; }
  .gt-footer__inner { flex-direction: column; align-items: flex-start; }
}