/* sales.css — sales/investor pitch page. Single-page composition.
   Consumes tokens.css. No hex literals here. Self-contained: container,
   section, btn, footer, pillar, kpi, accordion, hero. */

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: 880px; }

.section {
  padding-block: clamp(var(--s-8), 10vw, var(--s-10));
  position: relative;
}
.section--tight { padding-block: clamp(var(--s-6), 7vw, var(--s-8)); }
.section--surface { background: var(--ink-2); }

.row {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  align-items: center;
}

.stack > * + * { margin-top: var(--s-4); }
.stack--lg > * + * { margin-top: var(--s-6); }

.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;
}

/* ---------- Buttons (matches features-site primary/secondary) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-5);
  border-radius: 999px;
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  line-height: 1;
  transition: transform var(--dur-fast) var(--ease-out-expo),
              background var(--dur-fast),
              color var(--dur-fast),
              border-color var(--dur-fast);
  min-height: 44px;
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: var(--ink);
}
.btn--primary:hover { transform: translateY(-1px); background: var(--bone); color: var(--ink); }
.btn--secondary {
  border: 1px solid var(--rule);
  color: var(--bone);
}
.btn--secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn .arrow { display: inline-block; transition: transform var(--dur-fast); }
.btn:hover .arrow { transform: translateX(2px); }
.btn:hover .arrow--down { transform: translateY(2px); }

/* ---------- Background texture (faint engineering paper) ---------- */
body {
  background-image:
    linear-gradient(rgba(244,240,232,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,240,232,0.022) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(var(--s-8), 11vw, var(--s-10));
  overflow: hidden;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  align-items: center;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
@media (min-width: 900px) {
  .hero__inner { grid-template-columns: 3fr 2fr; gap: var(--s-9); }
}

.hero__eyebrow { margin-bottom: var(--s-5); }

.hero__title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(2.75rem, 7.2vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--bone);
  margin-bottom: var(--s-5);
}
.hero__title-line { display: block; }
.hero__title-line--indent {
  display: block;
  padding-inline-start: clamp(1ch, 4vw, 3.5ch);
  color: var(--bone-dim);
}

.hero__rule {
  width: 80px;
  height: 1px;
  background: var(--accent);
  margin-bottom: var(--s-5);
  opacity: 0.6;
}

.hero__sub {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: clamp(1rem, 1.4vw, 1.1875rem);
  line-height: 1.5;
  color: var(--bone-dim);
  max-width: 52ch;
  margin-bottom: var(--s-6);
}

.hero__cta {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
}

.hero__visual {
  display: grid;
  place-items: center;
  min-height: 280px;
  position: relative;
}
.hero__visual::before {
  content: "";
  position: absolute;
  inset: -10% -5%;
  background: radial-gradient(ellipse at center, rgba(123,216,196,0.10), transparent 65%);
  pointer-events: none;
  z-index: 0;
}
.hero__visual svg {
  position: relative;
  z-index: 1;
  width: clamp(140px, 22vw, 240px);
  height: auto;
  color: var(--bone-faint);
}

/* ---------- Eyebrow tweaks for sections ---------- */
.section__head { max-width: 880px; margin-inline: auto; padding-inline: var(--gutter); margin-bottom: var(--s-7); }
.section__head--center { text-align: center; }
.section__head h2 { margin-top: var(--s-3); }
.section__head .lede {
  margin-top: var(--s-4);
  color: var(--bone-dim);
  max-width: 60ch;
  font-size: 1.0625rem;
  line-height: 1.6;
}
.section__head--center .lede { margin-inline: auto; }

/* ---------- Two-track framing ---------- */
.framing {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  padding-inline: var(--gutter);
}
.framing p {
  font-family: var(--font-body);
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.6;
  color: var(--bone-dim);
  max-width: none;
  margin-inline: auto;
}
.framing p strong { color: var(--bone); }

/* ---------- Accordion (the centerpiece) ---------- */
.accordion {
  max-width: 880px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.accordion__row {
  border-top: 1px solid var(--rule);
}
.accordion__row:last-child {
  border-bottom: 1px solid var(--rule);
}
.accordion__row[open] { background: linear-gradient(180deg, rgba(244,240,232,0.012), transparent); }

.accordion__row > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--s-4);
  padding-block: var(--s-5);
  padding-inline: 0;
  transition: color var(--dur-base) var(--ease-out-expo);
}
.accordion__row > summary::-webkit-details-marker { display: none; }
.accordion__row > summary::marker { content: ""; }

.accordion__title {
  flex: 1 1 auto;
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: clamp(1.0625rem, 1.5vw, 1.1875rem);
  line-height: 1.4;
  color: var(--bone);
  transition: color var(--dur-fast) var(--ease-out-expo);
}
.accordion__row:hover > summary .accordion__title { color: var(--accent); }
.accordion__row[open] > summary .accordion__title { color: var(--bone); }

.accordion__tag {
  flex: 0 0 auto;
  font-family: var(--font-secondary);
  font-weight: 700;
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 3px var(--s-2);
  border-radius: 999px;
  border: 1px solid currentColor;
  opacity: 0.55;
  transition: opacity var(--dur-fast);
}
.accordion__row:hover > summary .accordion__tag,
.accordion__row[open] > summary .accordion__tag { opacity: 1; }
.accordion__tag--researcher { color: var(--accent); }
.accordion__tag--operation { color: var(--accent-2); }
@media (max-width: 539px) {
  .accordion__tag { display: none; }
}

.accordion__chev {
  flex: 0 0 auto;
  width: 14px; height: 14px;
  color: var(--bone-faint);
  transition: transform var(--dur-base) var(--ease-out-expo), color var(--dur-fast);
}
.accordion__row:hover > summary .accordion__chev { color: var(--accent); }
.accordion__row[open] > summary .accordion__chev {
  transform: rotate(90deg);
  color: var(--accent);
}

.accordion__panel {
  padding-block: 0 var(--s-6);
  padding-inline-start: var(--s-5);
  border-left: 2px solid var(--accent);
  max-width: 62ch;
  animation: accordion-in 320ms var(--ease-out-expo);
}
.accordion__row--operation .accordion__panel { border-left-color: var(--accent-2); }
.accordion__panel p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--bone-dim);
}
.accordion__panel p + p { margin-top: var(--s-3); }

@keyframes accordion-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .accordion__panel { animation: none; }
  .accordion__row[open] > summary .accordion__chev { transition: none; }
}

/* ---------- By the numbers ---------- */
.stats {
  display: grid;
  gap: var(--s-7) var(--s-6);
  grid-template-columns: 1fr;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
@media (min-width: 640px) { .stats { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .stats { grid-template-columns: repeat(3, 1fr); } }

.stat {
  border-top: 1px solid var(--rule);
  padding-top: var(--s-5);
}
.stat__num {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  line-height: 1;
  color: var(--bone);
  letter-spacing: -0.035em;
}
.stat__num .unit { font-size: 0.42em; color: var(--bone-faint); margin-inline-start: 0.25em; letter-spacing: 0; }
.stat__label {
  display: block;
  margin-top: var(--s-3);
  font-family: var(--font-secondary);
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--bone-faint);
  line-height: 1.4;
}

/* ---------- Pillar ---------- */
.pillar {
  display: grid;
  gap: var(--s-5);
  padding: var(--s-7);
  border: 1px solid var(--rule);
  border-radius: var(--r-3);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  max-width: var(--content-max);
  margin-inline: auto;
}
@media (min-width: 1024px) {
  .pillar { grid-template-columns: 1fr 1fr; gap: var(--s-8); }
  .pillar__col:first-child { padding-inline-end: var(--s-5); border-inline-end: 1px solid var(--rule); }
}
.pillar h3 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: var(--lh-snug);
  color: var(--bone);
  margin-top: var(--s-3);
  margin-bottom: var(--s-4);
}
.pillar ul { list-style: none; padding: 0; margin: 0; }
.pillar li {
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  color: var(--bone-dim);
  font-size: 1rem;
  line-height: 1.55;
}
.pillar li:last-child { border-bottom: 0; }
.pillar li::before {
  content: "·";
  flex: 0 0 auto;
  font-family: var(--font-display);
  color: var(--accent-2);
  font-size: 1.6em;
  line-height: 1;
  margin-top: -0.15em;
}
.pillar__col--negative li::before { content: "×"; color: var(--bone-faint); font-size: 1em; line-height: 1.4; margin-top: 0; }
.pillar p {
  color: var(--bone-faint);
  font-size: 0.875rem;
  font-style: italic;
  margin-top: var(--s-5);
  max-width: 50ch;
}

/* ---------- Final CTA block ---------- */
.cta-block {
  text-align: center;
  padding: var(--s-9) var(--gutter);
  border-top: 1px solid var(--rule);
}
.cta-block__title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: var(--lh-snug);
  color: var(--bone);
  max-width: 18ch;
  margin-inline: auto;
  letter-spacing: -0.025em;
}
.cta-block__sub {
  color: var(--bone-dim);
  margin-top: var(--s-4);
  max-width: 56ch;
  margin-inline: auto;
  font-size: 1.0625rem;
  line-height: 1.6;
}
.cta-block__row {
  display: inline-flex;
  gap: var(--s-3);
  margin-top: var(--s-6);
  flex-wrap: wrap;
  justify-content: center;
}
@media (max-width: 539px) {
  .cta-block__row { display: flex; flex-direction: column; width: 100%; }
  .cta-block__row .btn { width: 100%; justify-content: center; }
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: var(--s-7);
  font-size: 0.875rem;
  color: var(--bone-faint);
}
.site-footer__grid {
  display: grid;
  gap: var(--s-5);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .site-footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .site-footer__grid { grid-template-columns: repeat(4, 1fr); } }
.site-footer h4 {
  font-family: var(--font-secondary);
  font-size: var(--fs-eyebrow);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--bone);
  margin-bottom: var(--s-3);
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { padding-block: var(--s-1); }
.site-footer a { color: var(--bone-dim); }
.site-footer a:hover { color: var(--accent); }
.site-footer__base {
  margin-top: var(--s-6);
  padding-top: var(--s-4);
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-3);
}
.site-footer__legalese {
  max-width: 70ch;
  line-height: 1.5;
  color: var(--bone-faint);
  font-size: 0.8125rem;
}

/* ---------- Smooth scroll for in-page anchors (honors reduced motion) ---------- */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---------- Section heading consistency ---------- */
.section h2 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(1.875rem, 4vw, 3rem);
  line-height: var(--lh-snug);
  letter-spacing: -0.02em;
  color: var(--bone);
}