/* Page composition for the VectorShift marketing site.
   Desktop values are taken from the design; the breakpoints below are the
   implementation's own work, since the design is specified at one width. */

/* ============================================================
   Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.site-header__inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  font: 800 21px var(--font-display);
  color: var(--text-heading);
  letter-spacing: var(--ls-tight);
}

.wordmark:hover {
  color: var(--text-heading);
}

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
}

.site-nav a {
  font: 600 var(--fs-sm) var(--font-body);
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  padding: 4px 2px;
  transition:
    color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.site-nav a:hover,
.site-nav a[aria-current='true'] {
  color: var(--text-heading);
  border-bottom-color: var(--accent-500);
}

/* The CTA repeated inside the mobile panel; the header keeps its own above. */
.site-nav__cta {
  display: none;
}

/* Hamburger — not in the design, needed once the nav no longer fits. */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-heading);
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-standard);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: '';
  position: relative;
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 4px;
}

/* ============================================================
   Hero
   ============================================================ */

.hero__inner {
  padding-top: 112px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 72px;
  align-items: center;
}

.hero__badge {
  margin-bottom: 28px;
}

.hero__title {
  font: 800 var(--fs-4xl) / var(--lh-tight) var(--font-display);
  letter-spacing: var(--ls-tight);
  margin-bottom: 24px;
  text-wrap: balance;
}

.hero__copy {
  font: 400 var(--fs-md) / var(--lh-relaxed) var(--font-body);
  color: var(--primary-100);
  max-width: 520px;
  margin-bottom: 36px;
  text-wrap: pretty;
}

.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero__aside {
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
}

.hero__lockup {
  width: 100%;
  max-width: 360px;
  height: auto;
}

.hero__points {
  border-top: 1px solid var(--primary-400);
  padding-top: 24px;
  width: 100%;
  display: grid;
  gap: 14px;
  margin: 0;
  list-style: none;
  padding-left: 0;
}

.hero__points li,
.assessment__points li {
  font: 500 var(--fs-sm) / var(--lh-normal) var(--font-body);
  color: var(--primary-100);
}

/* ============================================================
   AI integration
   ============================================================ */

.ai {
  padding-top: 104px;
  padding-bottom: 40px;
}

.ai__inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  align-items: start;
}

.ai__title {
  margin-bottom: 20px;
}

.ai .prose {
  margin-bottom: 16px;
}

.ai .prose:last-of-type {
  margin-bottom: 28px;
}

.usecase {
  padding: 28px 30px;
}

.usecase__title {
  font: 700 var(--fs-md) var(--font-display);
  color: var(--text-heading);
  margin-bottom: 8px;
}

.usecase__body {
  font: 400 var(--fs-sm) / var(--lh-relaxed) var(--font-body);
  color: var(--text-body);
}

/* ============================================================
   What we do
   ============================================================ */

.services {
  padding-top: 80px;
  padding-bottom: 80px;
}

.services__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 44px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
}

.services__head p {
  max-width: 380px;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  padding: 32px;
}

.service-card__head {
  display: flex;
  gap: 12px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.service-card__title {
  font: 700 var(--fs-lg) var(--font-display);
  color: var(--text-heading);
  margin-bottom: 12px;
}

.service-card__head .service-card__title {
  margin-bottom: 0;
}

.service-card__body {
  font: 400 var(--fs-sm) / var(--lh-relaxed) var(--font-body);
  color: var(--text-body);
}

/* ============================================================
   Fractional CIO
   ============================================================ */

.cio__inner {
  padding-top: 96px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.cio__title {
  margin-bottom: 20px;
}

.cio__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px 48px;
}

.cio__item-title {
  font: 700 var(--fs-base) var(--font-display);
  color: var(--stone-0);
  margin-bottom: 8px;
}

.cio__item-body {
  font: 400 var(--fs-sm) / var(--lh-relaxed) var(--font-body);
  color: var(--primary-100);
}

/* ============================================================
   How we work
   ============================================================ */

.how {
  padding-top: 104px;
  padding-bottom: 80px;
}

.how__head {
  margin-bottom: 48px;
}

.how__head h2 {
  margin-bottom: 14px;
}

.how__head p {
  max-width: 560px;
}

.how__grid {
  grid-template-columns: repeat(3, 1fr);
}

.step {
  padding: 40px 34px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step__number {
  font: 600 var(--fs-xs) var(--font-mono);
  letter-spacing: var(--ls-wide);
  color: var(--text-muted);
}

.step__title {
  font: 700 var(--fs-lg) var(--font-display);
  color: var(--text-heading);
}

.step__body {
  font: 400 var(--fs-sm) / var(--lh-relaxed) var(--font-body);
  color: var(--text-body);
}

.step__terms {
  font: 600 var(--fs-sm) var(--font-body);
  color: var(--text-muted);
  margin-top: auto;
  padding-top: 18px;
}

.step__terms--free {
  color: var(--accent-600);
}

/* ============================================================
   Quotes
   ============================================================ */

.quotes__inner {
  padding-top: 88px;
  padding-bottom: 88px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.quote {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.quote blockquote {
  font: 500 var(--fs-lg) / var(--lh-snug) var(--font-display);
  color: var(--text-heading);
  letter-spacing: var(--ls-tight);
  text-wrap: pretty;
}

.quote figcaption {
  font: 400 var(--fs-sm) / var(--lh-normal) var(--font-body);
  color: var(--text-muted);
  border-left: 2px solid var(--accent-500);
  padding-left: 14px;
}

/* ============================================================
   Assessment
   ============================================================ */

.assessment__inner {
  padding-top: 96px;
  padding-bottom: 96px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.assessment__title {
  margin-bottom: 20px;
}

.assessment__copy {
  font: 400 var(--fs-md) / var(--lh-relaxed) var(--font-body);
  color: var(--primary-100);
  margin-bottom: 32px;
  max-width: 460px;
  text-wrap: pretty;
}

.assessment__points {
  display: grid;
  gap: 14px;
  border-top: 1px solid var(--primary-400);
  padding-top: 28px;
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.assessment__points li {
  color: var(--stone-0);
}

.assessment__form {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: 36px;
  display: grid;
  gap: 18px;
}

.assessment__form-title {
  font: 700 var(--fs-md) var(--font-display);
  color: var(--text-heading);
}

.assessment__fineprint {
  font: 400 var(--fs-xs) / var(--lh-normal) var(--font-body);
  color: var(--text-muted);
}

.form-status {
  font: 600 var(--fs-sm) / var(--lh-normal) var(--font-body);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.form-status:empty {
  display: none;
}

.form-status--ok {
  background: var(--success-100);
  color: var(--success-700);
}

.form-status--error {
  background: var(--error-100);
  color: var(--error-700);
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  background: var(--primary-950);
  color: var(--primary-100);
}

.site-footer__inner {
  padding-top: 72px;
  padding-bottom: 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 64px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.site-footer__lockup {
  width: 220px;
  height: auto;
}

.site-footer__blurb {
  font: 400 var(--fs-sm) / var(--lh-relaxed) var(--font-body);
  color: var(--primary-200);
  max-width: 320px;
}

.site-footer__col {
  display: grid;
  gap: 12px;
  align-content: start;
}

.site-footer__heading {
  font: 700 var(--fs-sm) var(--font-display);
  color: var(--stone-0);
}

.site-footer__col a {
  font: 400 var(--fs-sm) var(--font-body);
  color: var(--primary-200);
  transition: color var(--duration-fast) var(--ease-standard);
}

.site-footer__col a:hover {
  color: var(--stone-0);
}

.site-footer__place {
  font: 400 var(--fs-sm) var(--font-body);
  color: var(--primary-200);
}

.site-footer__bar {
  padding-top: 24px;
  padding-bottom: 48px;
  border-top: 1px solid var(--primary-800);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.site-footer__copyright {
  font: 400 var(--fs-xs) var(--font-body);
  color: var(--primary-300);
}

/* ============================================================
   Responsive
   ============================================================ */

/* Below the 1200px container the two-column splits get cramped long before
   they get narrow, so they collapse in two stages. */
@media (max-width: 1080px) {
  .hero__inner,
  .ai__inner,
  .cio__inner,
  .assessment__inner {
    gap: 56px;
  }

  .services__grid,
  .how__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  :root {
    --fs-4xl: 2.75rem;
    --fs-2xl: 1.875rem;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--container-pad) 16px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-md);
  }

  .site-nav[data-open='true'] {
    display: flex;
  }

  .site-nav a:not(.site-nav__cta) {
    padding: 14px 0;
    font-size: var(--fs-base);
    border-bottom: 1px solid var(--border-subtle);
  }

  .site-nav a:not(.site-nav__cta):hover,
  .site-nav a:not(.site-nav__cta)[aria-current='true'] {
    border-bottom-color: var(--border-subtle);
  }

  .site-nav .site-nav__cta {
    display: inline-flex;
    margin-top: 16px;
    color: var(--text-inverse);
  }

  .site-nav .site-nav__cta:hover {
    color: var(--text-inverse);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header__inner {
    position: relative;
    gap: 12px;
  }

  /* The header CTA duplicates the hero CTA; drop it once space is tight. */
  .site-header__cta {
    display: none;
  }

  .hero__inner,
  .ai__inner,
  .cio__inner,
  .assessment__inner,
  .quotes__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero__inner {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .ai {
    padding-top: 72px;
  }

  .cio__inner,
  .assessment__inner {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .how {
    padding-top: 72px;
  }

  .quotes__inner {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .services__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .assessment__form {
    padding: 28px;
  }
}

@media (max-width: 620px) {
  .services__grid,
  .how__grid,
  .cio__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__actions .btn {
    width: 100%;
  }

  /* Side by side, the tag squeezes the title into three lines — stack it. */
  .service-card__head {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 10px;
  }

  .step {
    padding: 32px 26px;
  }

  .usecase {
    padding: 24px;
  }
}