/* ==========================================================================
   BASE — reset, type, primitives, nav, footer
   ========================================================================== */

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

html {
  font-size: var(--unit-width);
  -webkit-text-size-adjust: 100%;
  /* Anchor targets must clear the fixed bar, or every in-page link drops the
     section heading underneath it. */
  scroll-padding-top: calc(var(--nav-h) + 2.5rem);
}

body {
  margin: 0;
  background: var(--l-bg);
  color: var(--l-ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv05" 1, "ss03" 1;
  overflow-x: clip;
}

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 640; letter-spacing: -0.035em; line-height: 1.04; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
::selection { background: var(--blue); color: #fff; }

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.skip {
  position: absolute; top: -100px; left: var(--s-3); z-index: 200;
  padding: var(--s-2) var(--s-4); border-radius: var(--r-pill);
  background: var(--blue); color: #fff; font-size: 0.875rem; font-weight: 550;
}
.skip:focus { top: var(--s-3); }

/* --------------------------------------------------------------- layout -- */

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--gutter); }
.shell-wide { width: 100%; max-width: var(--shell-wide); margin-inline: auto; padding-inline: var(--gutter); }
.sec { padding-block: var(--section-y); position: relative; }
.sec-sm { padding-block: var(--section-y-sm); position: relative; }

/* Light section variants */
.sec-tint { background: var(--l-bg-2); }
.sec-line { border-top: 1px solid var(--l-line); }

/* ----------------------------------------------------------------- type -- */

.t-hero { font-size: clamp(2.6rem, 5.9vw, 5.15rem); line-height: 0.98; letter-spacing: -0.045em; font-weight: 660; }
.t-h2   { font-size: clamp(2rem, 3.5vw, 3.1rem);   line-height: 1.05; letter-spacing: -0.04em;  font-weight: 650; }
.t-h3   { font-size: clamp(1.35rem, 1.9vw, 1.7rem); line-height: 1.18; letter-spacing: -0.03em; font-weight: 620; }
.t-h4   { font-size: 1.0625rem; line-height: 1.3; letter-spacing: -0.02em; font-weight: 600; }
.t-lead { font-size: clamp(1.05rem, 1.25vw, 1.25rem); line-height: 1.5; letter-spacing: -0.012em; }
.t-body { font-size: 0.9375rem; line-height: 1.62; }
.t-sm   { font-size: 0.8125rem; line-height: 1.5; }

.dim  { color: var(--l-ink-2); }
.dim3 { color: var(--l-ink-3); }
.on-dark .dim  { color: var(--d-ink-2); }
.on-dark .dim3 { color: var(--d-ink-3); }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* Eyebrow: mono label + accent dot */
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--mono); font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--l-ink-3);
}
.eyebrow::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); flex: none; }
.on-dark .eyebrow { color: var(--d-ink-3); }

/* Section header block */
.head { max-width: 46rem; }
.head .t-h2 { margin-top: var(--gap-eyebrow-head); }
.head .t-lead { margin-top: var(--gap-head-body); color: var(--l-ink-2); max-width: 42ch; }
.on-dark .head .t-lead { color: var(--d-ink-2); }

.head-split { display: grid; grid-template-columns: 1fr minmax(0, 26rem); gap: var(--s-7); align-items: end; }
.head-split .head { max-width: none; }

/* -------------------------------------------------------------- buttons -- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55em;
  padding: 0.85em 1.45em; border-radius: var(--r-pill);
  font-size: 0.9375rem; font-weight: 550; letter-spacing: -0.012em; white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out),
              box-shadow var(--t-base) var(--ease-out),
              transform var(--t-fast) var(--ease-out);
}
.btn:active { transform: scale(0.985); }
.btn svg { width: 1em; height: 1em; flex: none; transition: transform var(--t-base) var(--ease); }
.btn:hover svg.go { transform: translateX(0.2em); }

.btn-primary { background: var(--blue); color: var(--blue-ink); box-shadow: var(--lift-blue); }
.btn-primary:hover { background: var(--blue-hi); }

.btn-light { background: var(--l-ink); color: #fff; }
.btn-light:hover { background: #1b2233; }

.btn-ghost { border-color: var(--l-line-2); color: var(--l-ink); }
.btn-ghost:hover { background: var(--l-bg-2); border-color: var(--l-ink-3); }

.on-dark .btn-ghost { border-color: var(--d-line-2); color: var(--d-ink); }
.on-dark .btn-ghost:hover { background: var(--d-glass-2); border-color: rgba(255,255,255,.36); }

.btn-sm { padding: 0.6em 1.05em; font-size: 0.8125rem; }

/* Text link with wiping underline */
.link {
  position: relative; display: inline-flex; align-items: center; gap: 0.4em;
  font-size: 0.9375rem; font-weight: 550; color: var(--blue); padding-bottom: 0.1em;
}
.link::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform var(--t-slow) var(--ease);
}
.link:hover::after { transform: scaleX(1); transform-origin: left; }
.link svg { width: 0.85em; height: 0.85em; transition: transform var(--t-base) var(--ease); }
.link:hover svg { transform: translateX(0.2em); }

/* ---------------------------------------------------------------- glass -- */

.glass {
  background: var(--d-glass);
  border: 1px solid var(--d-line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
}
.glass-l {
  background: var(--l-glass);
  border: 1px solid var(--l-line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  box-shadow: var(--lift-1);
}

/* Plain light card */
.card {
  background: var(--l-bg);
  border: 1px solid var(--l-line);
  border-radius: var(--r-lg);
  box-shadow: var(--lift-1);
}

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

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: center;
  padding: var(--s-3) var(--gutter);
  transition: padding var(--t-slow) var(--ease);
}

.nav-in {
  width: 100%; max-width: var(--shell-wide);
  display: flex; align-items: center; gap: var(--s-5);
  padding: 0.55rem 0.55rem 0.55rem 1.5rem;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  transition: background-color var(--t-slow) var(--ease-io),
              border-color var(--t-slow) var(--ease-io),
              box-shadow var(--t-slow) var(--ease-io),
              color var(--t-slow) var(--ease-io);
  color: var(--d-ink);
  /* Even over the dark cover the bar keeps its own surface — fully
     transparent chrome reads as part of whatever is behind it. */
  background: rgba(10, 16, 32, 0.55);
  border-color: rgba(255, 255, 255, 0.10);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
}

/* Scrolled past the dark cover -> the bar inverts to light glass */
.nav.solid .nav-in {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(8, 11, 20, 0.10);
  box-shadow: 0 1px 2px rgba(8,11,20,.06), 0 12px 32px -12px rgba(8,11,20,.30);
  backdrop-filter: blur(22px) saturate(1.6);
  -webkit-backdrop-filter: blur(22px) saturate(1.6);
  color: var(--l-ink);
}

.brand { display: inline-flex; align-items: center; gap: 0.55rem; font-size: 1.0625rem; font-weight: 680; letter-spacing: -0.04em; }
.brand-mark { width: 1.5rem; height: 1.5rem; flex: none; border-radius: 7px; background: var(--blue); display: grid; place-items: center; box-shadow: var(--lift-blue); }
.brand-mark svg { width: 0.95rem; height: 0.95rem; color: #fff; }

.nav-links { display: flex; align-items: center; gap: 2rem; margin-left: 1.5rem; }
.nav-a { font-size: 0.875rem; font-weight: 480; opacity: 0.68; transition: opacity var(--t-fast) var(--ease-out); }
.nav-a:hover { opacity: 1; }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }

/* --------------------------------------------------------------------------
   NAV DROPDOWNS
   Industries and Business apps open a panel of real products, so the whole
   ecosystem is reachable from any page without a duplicate catalog section.
   -------------------------------------------------------------------------- */

.navdd { position: relative; }
.navdd-btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-size: 0.875rem; font-weight: 480; opacity: 0.68;
  transition: opacity var(--t-fast) var(--ease-out);
}
.navdd-btn:hover, .navdd.open .navdd-btn { opacity: 1; }
.navdd-btn svg { width: 0.7rem; height: 0.7rem; transition: transform var(--t-base) var(--ease); }
.navdd.open .navdd-btn svg { transform: rotate(180deg); }

.navdd-panel {
  position: absolute; top: calc(100% + 1.1rem); left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: max-content; max-width: min(52rem, 88vw);
  padding: 0.75rem;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid rgba(8, 11, 20, 0.10);
  box-shadow: 0 1px 2px rgba(8,11,20,.06), 0 20px 48px -16px rgba(8,11,20,.34);
  backdrop-filter: blur(22px) saturate(1.6);
  -webkit-backdrop-filter: blur(22px) saturate(1.6);
  color: var(--l-ink);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease), visibility var(--t-base);
}
.navdd.open .navdd-panel { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }

.navdd-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.15rem; }
.navdd-grid.is-wide { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.navdd-i {
  display: flex; align-items: flex-start; gap: 0.65rem;
  padding: 0.6rem 0.7rem; border-radius: var(--r-sm);
  transition: background-color var(--t-fast) var(--ease-out);
}
.navdd-i:hover { background: var(--l-bg-2); }
.navdd-i-m { width: 1.9rem; height: 1.9rem; border-radius: 8px; flex: none; display: grid; place-items: center; background: var(--mark-soft); color: var(--mark-soft-ink); }
.navdd-i-m svg { width: 0.9rem; height: 0.9rem; }
.navdd-i-t { display: flex; flex-direction: column; gap: 0.1rem; min-width: 0; }
.navdd-i-n { font-size: 0.8125rem; font-weight: 600; letter-spacing: -0.015em; line-height: 1.25; }
.navdd-i-d { font-size: 0.6875rem; color: var(--l-ink-3); line-height: 1.3; }

.navdd-foot {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  margin-top: 0.4rem; padding: 0.7rem 0.7rem 0.4rem;
  border-top: 1px solid var(--l-line);
}
.navdd-note { font-size: 0.6875rem; color: var(--l-ink-3); font-family: var(--mono); }
.navdd-all { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.8125rem; font-weight: 600; color: var(--blue); }
.navdd-all svg { width: 0.8rem; height: 0.8rem; transition: transform var(--t-base) var(--ease); }
.navdd-all:hover svg { transform: translateX(0.18rem); }

/* Mobile menu sections */
.menu-group { padding: 0.5rem 0.9rem 0.2rem; font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--l-ink-3); }
.menu-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.1rem; }
.menu-wrap a { padding: 0.6rem 0.9rem; font-size: 0.875rem; }
.menu { max-height: min(72vh, 40rem); overflow-y: auto; }

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

.nav.solid .btn-ghost { border-color: var(--l-line-2); color: var(--l-ink); }
.nav.solid .btn-ghost:hover { background: var(--l-bg-2); }

.burger { display: none; width: 2.4rem; height: 2.4rem; place-items: center; border-radius: 50%; }
.burger svg { width: 1.15rem; height: 1.15rem; }

/* Drop-down panel opened by the burger. Previously the button was inert, so
   every link in the header was unreachable below 1024px. */
.menu {
  position: absolute; top: calc(100% + 0.5rem); left: var(--gutter); right: var(--gutter);
  display: none; flex-direction: column; gap: 0.15rem;
  padding: 0.6rem; border-radius: var(--r-lg);
  background: var(--l-glass); border: 1px solid var(--l-line);
  box-shadow: var(--lift-3);
  backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5);
  color: var(--l-ink);
}
.nav.open .menu { display: flex; }
.menu a { padding: 0.75rem 0.9rem; border-radius: var(--r-sm); font-size: 0.9375rem; font-weight: 520; }
.menu a:hover { background: var(--l-bg-2); }

@media (max-width: 1023px) {
  .nav-links { display: none; }
  .burger { display: grid; }
}
@media (max-width: 767px) {
  .nav-cta-text { display: none; }
}
@media (min-width: 1024px) { .menu { display: none !important; } }

/* --------------------------------------------------------------- footer -- */

.footer { background: var(--d-bg); color: var(--d-ink); padding-block: var(--s-7) var(--s-5); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 20rem) 1fr; gap: var(--s-7); }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--s-4); }
.footer-t { font-family: var(--mono); font-size: 0.625rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--d-ink-3); margin-bottom: 1.2rem; }
.footer-li { margin-bottom: 0.7rem; }
.footer-a { font-size: 0.8125rem; color: var(--d-ink-2); transition: color var(--t-fast) var(--ease-out); }
.footer-a:hover { color: var(--d-ink); }
.footer-bot { margin-top: var(--s-7); padding-top: var(--s-4); border-top: 1px solid var(--d-line); display: flex; justify-content: space-between; gap: var(--s-4); flex-wrap: wrap; font-size: 0.8125rem; color: var(--d-ink-3); }

@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--s-5); }
  .footer-cols { grid-template-columns: repeat(2, 1fr); row-gap: var(--s-5); }
  .head-split { grid-template-columns: 1fr; gap: var(--s-4); }
}