/* ==========================================================================
   cognativeinsights.com — site styles on the Interlock design system.
   All colors/sizes come from tokens.css custom properties.
   ========================================================================== */

/* ---- Fonts (self-hosted, variable, latin subset) ------------------------ */
@font-face {
  font-family: "Gabarito";
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("/assets/fonts/gabarito.woff2") format("woff2");
}
@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("/assets/fonts/instrument.woff2") format("woff2");
}
@font-face {
  font-family: "Instrument Sans";
  font-style: italic;
  font-weight: 400 700;
  font-display: swap;
  src: url("/assets/fonts/instrument-italic.woff2") format("woff2");
}
@font-face {
  font-family: "Spline Sans Mono";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("/assets/fonts/splinemono.woff2") format("woff2");
}

/* ---- Base --------------------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
h1, h2, h3, h4 { margin: 0; text-wrap: balance; }
p { margin: 0; }
ul { margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); }
address { font-style: normal; }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--radius-xs); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
  position: fixed; left: 16px; top: 12px; z-index: 100;
  transform: translateY(-200%);
  background: var(--surface); color: var(--text-primary);
  padding: 10px 18px; border-radius: var(--radius-full);
  box-shadow: var(--shadow-md); font-weight: 600; font-size: 14px;
  transition: transform var(--duration-fast) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.wrap { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad); }

.eyebrow {
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase; color: var(--link);
  margin: 0 0 var(--space-3);
}

/* ---- Buttons ------------------------------------------------------------ */
.btn {
  font-family: var(--font-display); font-weight: 600; font-size: 15.5px;
  border-radius: var(--radius-full); border: 1.5px solid transparent;
  padding: 0 24px; height: 44px; display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer; white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}
.btn:hover { text-decoration: none; }
.btn .chev { display: inline-block; transition: transform var(--duration-fast) var(--ease-out); font-weight: 800; }
.btn:hover .chev { transform: translateX(3px); }
.btn-primary { background: var(--accent); color: #FFFFFF; }
.btn-primary:hover { background: var(--accent-hover); color: #FFFFFF; }
.btn-primary:active { background: var(--accent-active); }
.btn-secondary { background: transparent; color: var(--text-primary); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--accent); color: var(--link); }
.btn-inverse { background: #FFFFFF; color: var(--cog-ink); }
.btn-inverse:hover { background: var(--cobalt-50); color: var(--cog-ink); }
.btn-sm { height: 36px; padding: 0 18px; font-size: 14px; }
.btn-lg { height: 52px; padding: 0 30px; font-size: 17px; }
.btn:focus-visible { box-shadow: var(--focus-ring); border-radius: var(--radius-full); }

/* ---- Header ------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ground) 86%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); height: 76px; }
.brand img { width: 156px; height: auto; }
.site-nav { display: flex; align-items: center; gap: var(--space-6); }
.site-nav ul { display: flex; gap: var(--space-1); list-style: none; }
.site-nav ul a {
  display: inline-block; font-size: 15px; font-weight: 500; color: var(--text-secondary);
  padding: 8px 14px; border-radius: var(--radius-full);
  transition: background var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.site-nav ul a:hover { background: var(--surface-sunken); color: var(--text-primary); text-decoration: none; }
.site-nav ul a[aria-current="page"] { color: var(--link); font-weight: 600; }

/* Dropdown menus */
.has-sub { position: relative; }
.has-sub > a { display: inline-flex; align-items: center; gap: 6px; }
.has-sub > a::after {
  content: "›"; font-family: var(--font-display); font-weight: 800;
  font-size: 13px; transform: rotate(90deg);
  transition: transform var(--duration-fast) var(--ease-out);
}
.has-sub:hover > a::after, .has-sub:focus-within > a::after { transform: rotate(90deg) translateX(2px); }
.sub-menu {
  position: absolute; top: 100%; left: 0; z-index: 60;
  padding-top: 10px; min-width: 264px;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              visibility 0s linear var(--duration-fast);
}
.has-sub:hover .sub-menu, .has-sub:focus-within .sub-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
  transition: opacity var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}
.sub-menu ul {
  list-style: none; display: block;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  padding: 8px;
}
.sub-menu ul li + li { margin-top: 2px; }
.sub-menu ul a {
  display: block; font-size: 14.5px; font-weight: 500; color: var(--text-secondary);
  padding: 9px 14px; border-radius: var(--radius-sm); white-space: nowrap;
}
.sub-menu ul a:hover { background: var(--surface-sunken); color: var(--text-primary); }
.sub-menu ul li:first-child a { font-weight: 600; color: var(--text-primary); }
.sub-menu ul li:first-child { border-bottom: 1px solid var(--border); padding-bottom: 6px; margin-bottom: 6px; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  padding: 10px; border-radius: var(--radius-sm);
  flex-direction: column; gap: 5px;
}
.nav-toggle-bar { width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; display: block; }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none; position: absolute; top: 76px; left: 0; right: 0;
    background: var(--ground); border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--container-pad) var(--space-6);
    flex-direction: column; align-items: stretch; gap: var(--space-4);
    box-shadow: var(--shadow-md);
  }
  .site-nav.open { display: flex; }
  .site-nav ul { flex-direction: column; gap: 2px; }
  .site-nav ul a { display: block; font-size: 16px; padding: 12px 14px; }
  .nav-cta { justify-content: center; }

  /* Dropdowns become always-visible indented groups on mobile */
  .has-sub > a::after { content: none; }
  .sub-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    padding-top: 0; min-width: 0;
  }
  .sub-menu ul {
    background: transparent; border: none; box-shadow: none;
    padding: 0 0 6px 14px;
  }
  .sub-menu ul li:first-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
  .sub-menu ul li:first-child a { font-weight: 500; color: var(--text-secondary); }
  .sub-menu ul a { font-size: 14.5px; padding: 8px 14px; color: var(--text-muted); }
}

/* ---- Hero ---------------------------------------------------------------- */
.hero { padding: clamp(64px, 10vw, 128px) 0 clamp(48px, 7vw, 96px); }
.hero-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--text-display-2xl); line-height: 1.04;
  letter-spacing: var(--tracking-display); max-width: 17ch;
}
.hero-lede {
  margin-top: var(--space-6); max-width: 56ch;
  font-size: var(--text-body-lg); line-height: 1.6; color: var(--text-secondary);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }

/* ---- Expertise strip ----------------------------------------------------- */
.strip { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
.strip-inner { display: flex; align-items: center; gap: var(--space-8); padding-top: var(--space-4); padding-bottom: var(--space-4); flex-wrap: wrap; }
.strip-label {
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: var(--tracking-label); color: var(--text-muted); flex: none;
}
.strip-items { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6); list-style: none; }
.strip-items li {
  font-family: var(--font-display); font-weight: 600; font-size: 15.5px;
  color: var(--text-secondary); display: flex; align-items: center; gap: 10px;
}
.strip-items li::before { content: "»"; color: var(--accent); font-weight: 800; }

/* ---- Sections ------------------------------------------------------------ */
.section { padding: clamp(48px, 7vw, 96px) 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-flush { padding-top: 0; }
.sec-head { margin-bottom: var(--space-8); }
.sec-head h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: var(--text-h2); line-height: var(--leading-heading); max-width: 28ch;
}
.sec-head .sub { margin-top: var(--space-3); color: var(--text-secondary); max-width: 62ch; }

/* ---- Cards ---------------------------------------------------------------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: var(--space-4); }
.card-grid.three { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-6) var(--space-6) var(--space-6);
  box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: var(--space-2);
}
.section-alt .card { background: var(--ground); }
.card h3 { font-family: var(--font-display); font-weight: 700; font-size: var(--text-h3); }
.card p { font-size: 15px; color: var(--text-secondary); flex: 1; }
.card-link { color: inherit; transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out); }
.card-link:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); text-decoration: none; color: inherit; border-color: var(--border-strong); }
.link-more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: var(--space-2);
  font-family: var(--font-display); font-weight: 600; font-size: 14.5px; color: var(--link);
}
.link-more .chev { transition: transform var(--duration-fast) var(--ease-out); font-weight: 800; }
.card-link:hover .link-more .chev { transform: translateX(4px); }

/* ---- Quotes --------------------------------------------------------------- */
.quote-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-4); }
.quote-card {
  margin: 0; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-8);
}
.quote-card blockquote {
  margin: 0; font-size: var(--text-body-lg); line-height: 1.55;
  color: var(--text-primary); font-style: italic;
}
.quote-card figcaption { margin-top: var(--space-4); font-size: 14px; color: var(--text-muted); }
.quote-card figcaption b { color: var(--text-secondary); font-weight: 600; }

/* ---- CTA band -------------------------------------------------------------- */
.cta-band { background: var(--cog-ink); padding: clamp(48px, 7vw, 80px) 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); flex-wrap: wrap; }
.cta-band h2 {
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-h2);
  color: #FFFFFF; max-width: 24ch;
}
.cta-band p { margin-top: var(--space-2); color: #A9B7CD; max-width: 52ch; }

/* ---- Page head ------------------------------------------------------------- */
.page-head { padding: clamp(56px, 8vw, 104px) 0 clamp(32px, 5vw, 56px); }
.page-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--text-display-xl); line-height: 1.08;
  letter-spacing: var(--tracking-display); max-width: 20ch;
}
.page-lede {
  margin-top: var(--space-4); max-width: 58ch;
  font-size: var(--text-body-lg); line-height: 1.6; color: var(--text-secondary);
}

/* ---- Prose (markdown body) -------------------------------------------------- */
.prose { max-width: var(--container-text); }
.prose h2 {
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-h2);
  line-height: var(--leading-heading); margin: var(--space-12) 0 var(--space-4);
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-family: var(--font-display); font-weight: 600; font-size: var(--text-h3);
  margin: var(--space-8) 0 var(--space-3);
}
.prose p { margin: 0 0 var(--space-4); color: var(--text-secondary); }
.prose ul, .prose ol { margin: 0 0 var(--space-4); padding-left: var(--space-6); color: var(--text-secondary); }
.prose li { margin-bottom: var(--space-2); }
.prose ul { list-style: none; padding-left: var(--space-2); }
.prose ul li { padding-left: var(--space-6); position: relative; }
.prose ul li::before {
  content: "»"; position: absolute; left: 0;
  font-family: var(--font-display); font-weight: 800; color: var(--accent);
}
.prose a { font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }
.prose blockquote {
  margin: var(--space-6) 0; padding: var(--space-4) var(--space-6);
  border-left: 3px solid var(--accent); background: var(--surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic; color: var(--text-secondary);
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code {
  font-family: var(--font-mono); font-size: .86em;
  background: var(--surface-sunken); padding: 1px 6px; border-radius: 5px;
}
.prose strong { color: var(--text-primary); }
.prose hr { border: none; border-top: 1px solid var(--border); margin: var(--space-8) 0; }

/* ---- People ----------------------------------------------------------------- */
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: var(--space-4); }
.person-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-6); text-align: left;
}
.person-avatar {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--cobalt-50); color: var(--cobalt-600);
  font-family: var(--font-display); font-weight: 700; font-size: 20px;
  border: 1.5px solid var(--cobalt-200);
}
:root[data-theme="dark"] .person-avatar { background: var(--cobalt-900); color: var(--cobalt-300); border-color: var(--cobalt-700); }
.person-name { font-family: var(--font-display); font-weight: 700; font-size: 17px; margin-top: var(--space-4); }
.person-role { font-size: 13.5px; color: var(--link); font-weight: 500; margin-top: 2px; }
.person-bio { font-size: 14px; color: var(--text-secondary); margin-top: var(--space-3); }

/* ---- Partners ----------------------------------------------------------------- */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: var(--space-4); }
.partner-chip {
  display: flex; align-items: center; justify-content: center; min-height: 96px;
  background: var(--surface); border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md); padding: var(--space-4);
  font-family: var(--font-display); font-weight: 600; color: var(--text-muted);
  text-align: center;
}

a.partner-chip {
  border-style: solid; color: var(--text-primary); text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

a.partner-chip:hover {
  border-color: var(--accent, currentColor); transform: translateY(-2px);
}

.partner-chip img { max-height: 44px; max-width: 150px; width: auto; height: auto; }

/* ---- Contact ------------------------------------------------------------------ */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-4); }
.contact-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: var(--space-6);
}
.contact-label {
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: var(--tracking-label); color: var(--text-muted);
}
.contact-value { margin-top: var(--space-2); font-size: var(--text-body-lg); color: var(--text-primary); line-height: 1.5; }

/* ---- Footer -------------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); padding: clamp(48px, 6vw, 72px) 0 var(--space-8); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-8); }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand img { width: 44px; }
.footer-name { font-family: var(--font-display); font-weight: 700; font-size: 17px; margin-top: var(--space-3); }
.footer-tag { font-size: 14px; color: var(--text-muted); margin-top: 4px; max-width: 30ch; }
.footer-addr { margin-top: var(--space-4); font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.footer-col-title {
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: var(--tracking-label); color: var(--text-muted); margin-bottom: var(--space-3);
}
.footer-col ul { list-style: none; display: grid; gap: var(--space-2); }
.footer-col a { font-size: 14.5px; color: var(--text-secondary); }
.footer-col a:hover { color: var(--link); }
.footer-base {
  margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
  font-size: 13px; color: var(--text-muted);
}
.footer-mono { font-family: var(--font-mono); font-size: 12.5px; }