/* ==========================================================================
   Pathway IT — header.css
   Transparent over the hero → solid on scroll.
   Logo, links and CTA flip light/dark automatically per section.
   ========================================================================== */

.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  transition: background-color 420ms var(--ease), box-shadow 420ms var(--ease),
              backdrop-filter 420ms var(--ease), border-color 420ms var(--ease);
  border-bottom: 1px solid transparent;

  /* contrast-driven custom properties, flipped by [data-on] */
  --h-fg: var(--slate-900);
  --h-fg-dim: var(--slate-600);
  --h-mark: var(--indigo);
  --h-mark-fg: #fff;
  --h-hover: rgba(11, 18, 32, .05);
}

/* over a dark section */
.site-header[data-on="dark"] {
  --h-fg: #fff;
  --h-fg-dim: rgba(255, 255, 255, .72);
  --h-mark: #fff;
  --h-mark-fg: var(--ink);
  --h-hover: rgba(255, 255, 255, .1);
}

/* solid state once the hero is behind you */
.site-header.is-solid {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(22px) saturate(180%);
  border-bottom-color: rgba(11, 18, 32, .07);
  box-shadow: 0 6px 30px rgba(6, 12, 32, .06);
}
.site-header.is-solid[data-on="dark"] {
  background: rgba(8, 12, 24, .78);
  border-bottom-color: rgba(255, 255, 255, .09);
  box-shadow: 0 6px 30px rgba(0, 0, 0, .34);
}

/* The header never translates away — it is pinned for the whole page. */

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.75rem);
  height: var(--header-h);
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
  transition: height 420ms var(--ease);
}
.is-solid .header-inner { height: var(--header-h-sm); }

/* ─────────────────────────────────────────────────────── logo ───────── */
.logo { display: inline-flex; align-items: center; gap: .65rem; margin-right: auto; flex: none; }
.logo-mark { width: 36px; height: 36px; flex: none; transition: transform 480ms var(--ease); }
.logo:hover .logo-mark { transform: rotate(-10deg) scale(1.06); }
.logo-mark .m-bg { fill: var(--h-mark); transition: fill 420ms var(--ease); }
.logo-mark .m-fg { fill: var(--h-mark-fg); transition: fill 420ms var(--ease); }

.logo-word { display: flex; flex-direction: column; line-height: 1; }
.logo-word b {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--h-fg);
  transition: color 420ms var(--ease);
}
.logo-word span {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--h-fg-dim);
  transition: color 420ms var(--ease);
}

/* ──────────────────────────────────────────────────────── nav ───────── */
.nav { display: flex; align-items: center; gap: clamp(.25rem, 1.4vw, 1.15rem); }
.nav > li { position: relative; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .55rem .25rem;
  font-size: .9375rem;
  font-weight: 500;
  letter-spacing: -0.008em;
  color: var(--h-fg-dim);
  transition: color 300ms var(--ease);
}
/* animated underline */
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: .2rem;
  width: 100%; height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 380ms var(--ease);
}
.nav-link:hover { color: var(--h-fg); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left center; }

.nav > li.is-active > .nav-link { color: var(--h-fg); }
.nav > li.is-active > .nav-link::after {
  transform: scaleX(1);
  background: var(--grad-brand);
}
.site-header[data-on="dark"] .nav > li.is-active > .nav-link::after { background: #fff; }

.nav-link .chev { width: 13px; height: 13px; opacity: .6; transition: transform 320ms var(--ease); }
.nav > li:hover .nav-link .chev { transform: rotate(180deg); }

/* dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  width: min(580px, 80vw);
  padding: .8rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .2rem;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(26px) saturate(180%);
  box-shadow: var(--sh-lg);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 10px) scale(.985);
  transition: opacity 300ms var(--ease), transform 300ms var(--ease), visibility 300ms;
}
.nav > li:hover .dropdown,
.nav > li:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translate(-50%, 0) scale(1);
}
.dropdown::before { content: ""; position: absolute; inset-inline: 0; top: -14px; height: 14px; }

.dd-item {
  display: flex;
  gap: .7rem;
  padding: .7rem .75rem;
  border-radius: var(--r-md);
  transition: background-color 240ms var(--ease), transform 240ms var(--ease);
}
.dd-item:hover { background: var(--indigo-50); transform: translateX(3px); }
.dd-item .ic {
  flex: none;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--grad-brand-soft);
  color: var(--indigo);
}
.dd-item .ic svg { width: 17px; height: 17px; }
.dd-item strong {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: var(--slate-900);
  letter-spacing: -0.01em;
}
.dd-item small { display: block; font-size: .78rem; line-height: 1.45; color: var(--slate-500); }

/* ──────────────────────────────────────────────────── actions ───────── */
.header-actions { display: flex; align-items: center; gap: .6rem; flex: none; }

/* gradient CTA with glow + scale */
.header-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .72rem 1.25rem;
  border-radius: var(--r-pill);
  background: var(--grad-brand);
  background-size: 180% 180%;
  color: #fff;
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  box-shadow: 0 8px 24px rgba(79, 70, 229, .34);
  isolation: isolate;
  will-change: transform;
  transition: transform 320ms var(--ease), box-shadow 320ms var(--ease),
              background-position 520ms var(--ease);
}
.header-cta::after {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: inherit;
  background: var(--grad-brand);
  filter: blur(12px);
  opacity: .45;
  transition: opacity 320ms var(--ease);
}
.header-cta:hover {
  transform: scale(1.05);
  background-position: 100% 50%;
  box-shadow: 0 14px 34px rgba(79, 70, 229, .45);
}
.header-cta:hover::after { opacity: .8; }
.header-cta svg { width: 15px; height: 15px; transition: transform 320ms var(--ease); }
.header-cta:hover svg { transform: translateX(3px); }

/* ───────────────────────────────────────────────────── burger ───────── */
.burger { display: none; position: relative; width: 42px; height: 42px; border-radius: 50%; }
.burger span {
  position: absolute;
  left: 12px;
  width: 18px; height: 1.8px;
  border-radius: 2px;
  background: var(--h-fg);
  transition: transform 340ms var(--ease), opacity 220ms var(--ease),
              width 340ms var(--ease), background-color 420ms var(--ease);
}
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 21px; width: 13px; }
.burger span:nth-child(3) { top: 26px; }
body.nav-open .burger span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); width: 18px; }

/* ────────────────────────────────────────────── mobile panel ────────── */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  padding: calc(var(--header-h) + 1.5rem) var(--gutter) 2.5rem;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(26px);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-1.5%);
  transition: opacity 360ms var(--ease), transform 360ms var(--ease), visibility 360ms;
}
body.nav-open .mobile-nav { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-nav h5 {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 1.85rem 0 .5rem;
}
.mobile-nav h5:first-child { margin-top: 0; }
.mobile-nav a.m-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 0;
  border-bottom: 1px solid var(--line-2);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--slate-900);
}
.mobile-nav a.m-link svg { width: 18px; height: 18px; color: var(--slate-300); }
.mobile-nav .m-chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.mobile-nav .m-chips a {
  padding: .5rem .9rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: .85rem;
  font-weight: 500;
  color: var(--slate-700);
}
.mobile-nav .btn { width: 100%; margin-top: 2rem; }

@media (max-width: 1140px) {
  .nav { display: none; }
  .burger { display: block; }
  .site-header { --header-h: 70px; --header-h-sm: 62px; }
}
@media (max-width: 520px) {
  .header-cta { display: none; }
}