/* =========================================================================
   Dragonfly Interactive — Layout chrome
   Operating-company shell: header with mega-nav, footer with depth.
   ========================================================================= */

/* ---------- Site Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  width: 100%;
  background: rgba(252, 253, 254, 0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.site-header.is-scrolled {
  background: rgba(252, 253, 254, 0.92);
  border-bottom-color: var(--line-dark);
}
.site-header.on-dark-hero {
  background: transparent;
  border-bottom-color: transparent;
}
.site-header.on-dark-hero .brand-mark,
.site-header.on-dark-hero .brand-mark__text { color: var(--platinum); }
.site-header.on-dark-hero .nav__link { color: rgba(230, 234, 240, 0.72); }
.site-header.on-dark-hero .nav__link:hover,
.site-header.on-dark-hero .nav__link[aria-current="page"] { color: var(--platinum); }
.site-header.on-dark-hero .nav-cta { color: var(--platinum); border-color: rgba(230, 234, 240, 0.28); }
.site-header.on-dark-hero .nav-cta:hover { background: rgba(230, 234, 240, 0.06); border-color: rgba(230, 234, 240, 0.5); }
.site-header.on-dark-hero.is-scrolled {
  background: rgba(10, 15, 30, 0.78);
  border-bottom-color: var(--line);
}
.site-header.on-dark-hero .nav-toggle svg { stroke: var(--platinum); }

body:not(.has-hero-top) main { padding-top: 64px; }

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  height: 64px;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--section-x);
}

/* Brand mark */
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--graphite);
  transition: color var(--dur-base) var(--ease-out);
}
/* Brand mark — two pre-baked transparent PNG variants, one for light surfaces
   (inverted ink wings) and one for dark surfaces (original cream wings).
   We show one and hide the other based on .on-dark-hero. */
.brand-mark__symwrap {
  display: inline-flex;
  align-items: center;
  height: 36px;
  flex-shrink: 0;
}
.brand-mark__sym {
  width: auto;
  height: 36px;
  flex-shrink: 0;
  display: block;
  /* The cropped JPG has roomy padding around the dragonfly; pull the visible
     element a touch tighter via negative inline margin so it sits visually
     adjacent to the wordmark. */
  margin: 0 -6px;
}
.brand-mark__sym--ondark { display: none; }
.site-header.on-dark-hero .brand-mark__sym--onlight { display: none; }
.site-header.on-dark-hero .brand-mark__sym--ondark  { display: block; }
.brand-mark__text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
@media (max-width: 720px) { .brand-mark__text { display: none; } }

/* Primary nav */
.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin-left: auto;
}
.nav__item { position: relative; }
.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.55em 0.85em;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.005em;
  color: var(--steel);
  border-radius: var(--r-sm);
  transition: color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--graphite); background: rgba(17, 24, 39, 0.04); }
.site-header.on-dark-hero .nav__link:hover { background: rgba(230, 234, 240, 0.06); }
.nav__caret {
  width: 12px; height: 12px;
  transition: transform var(--dur-fast) var(--ease-out);
}
.nav__item:hover .nav__caret,
.nav__item.is-open .nav__caret { transform: rotate(180deg); }

/* Mega-menu for Portfolio */
.mega {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: min(820px, 92vw);
  background: var(--platinum-3);
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-6);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility var(--dur-base);
}
.nav__item:hover .mega,
.nav__item:focus-within .mega,
.nav__item.is-open .mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.mega__item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border-radius: var(--r-md);
  transition: background var(--dur-base) var(--ease-out);
  text-decoration: none;
  color: inherit;
}
.mega__item:hover { background: rgba(17, 24, 39, 0.04); }
.mega__icon {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  display: grid; place-items: center;
  background: var(--mega-accent-bg, rgba(215, 25, 32, 0.08));
  color: var(--mega-accent, var(--hk-red));
}
.mega__icon svg { width: 20px; height: 20px; }
.mega__item--hub     { --mega-accent: var(--accent-cinnabar); --mega-accent-bg: rgba(215, 25, 32, 0.08); }
.mega__item--skylink { --mega-accent: var(--accent-jade); --mega-accent-bg: rgba(47, 125, 106, 0.08); }
.mega__item--kodex   { --mega-accent: var(--accent-gold); --mega-accent-bg: rgba(156, 122, 31, 0.10); }
.mega__item--bao     { --mega-accent: var(--accent-violet); --mega-accent-bg: rgba(123, 92, 255, 0.10); }
.mega__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-md);
  letter-spacing: -0.005em;
  margin-bottom: 2px;
}
.mega__desc {
  font-size: var(--text-sm);
  color: var(--steel);
  line-height: 1.45;
}

/* Nav CTA */
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-left: var(--sp-3);
  padding: 0.55em 1em;
  border-radius: var(--r-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--graphite);
  background: var(--graphite);
  color: var(--platinum);
  border: 1px solid var(--graphite);
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
}
.nav-cta:hover { background: #000; }
.site-header.on-dark-hero .nav-cta {
  background: transparent;
  color: var(--platinum);
  border-color: rgba(230, 234, 240, 0.32);
}
.site-header.on-dark-hero .nav-cta:hover {
  background: var(--platinum);
  color: var(--navy);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: var(--r-sm);
  margin-left: auto;
}
.nav-toggle svg { width: 22px; height: 22px; stroke: var(--graphite); }
@media (max-width: 980px) {
  .nav, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
}

.mobile-nav {
  position: fixed;
  inset: 64px 0 auto 0;
  background: var(--navy);
  color: var(--platinum);
  padding: var(--sp-6) var(--section-x) var(--sp-12);
  border-bottom: 1px solid var(--line);
  transform: translateY(-110%);
  transition: transform var(--dur-slow) var(--ease-out);
  z-index: 49;
  visibility: hidden;
  max-height: calc(100vh - 64px);
  overflow-y: auto;
}
.mobile-nav.is-open { visibility: visible; transform: translateY(0); }
.mobile-nav__group { padding: var(--sp-3) 0; border-bottom: 1px solid var(--line); }
.mobile-nav__group:last-child { border-bottom: 0; }
.mobile-nav__heading {
  font-size: var(--text-eyebrow);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(230, 234, 240, 0.5);
  margin-bottom: var(--sp-2);
  padding-block: var(--sp-2);
}
.mobile-nav__link {
  display: block;
  padding: var(--sp-3) 0;
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 500;
}
.mobile-nav__cta { margin-top: var(--sp-6); display: inline-flex; }
@media (min-width: 981px) { .mobile-nav { display: none; } }

/* ---------- Site Footer ---------- */
.site-footer {
  background: var(--navy);
  color: var(--platinum);
  padding-block: var(--sp-20) var(--sp-8);
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.site-footer .container { position: relative; z-index: 2; }

.footer-lead {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--sp-12);
  padding-bottom: var(--sp-16);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--sp-12);
}
@media (max-width: 880px) {
  .footer-lead { grid-template-columns: 1fr; gap: var(--sp-8); }
}
.footer-lead__wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-2xl);
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-2);
}
.footer-lead__tagline {
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--steel-soft);
}
.footer-lead__tagline .hk { color: var(--hk-red); }
.footer-lead__tagline .us { color: var(--cobalt); }
.footer-lead__copy {
  margin-top: var(--sp-5);
  font-size: var(--text-md);
  color: rgba(230, 234, 240, 0.62);
  line-height: 1.55;
  max-width: 50ch;
}
.footer-lead__addresses {
  display: grid;
  gap: var(--sp-5);
}
.footer-addr__label {
  font-size: var(--text-eyebrow);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--steel-soft);
  margin-bottom: var(--sp-1);
}
.footer-addr__body {
  font-size: var(--text-sm);
  color: rgba(230, 234, 240, 0.78);
  line-height: 1.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-8);
}
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

.footer-col__heading {
  font-family: var(--font-body);
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel-soft);
  margin-bottom: var(--sp-4);
}
.footer-col__list { list-style: none; display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-col__list a {
  font-size: var(--text-sm);
  color: rgba(230, 234, 240, 0.74);
  transition: color var(--dur-base) var(--ease-out);
}
.footer-col__list a:hover { color: var(--platinum); }

.footer-bottom {
  margin-top: var(--sp-16);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  font-size: var(--text-xs);
  color: rgba(230, 234, 240, 0.5);
}
.footer-bottom__legal { display: flex; gap: var(--sp-5); flex-wrap: wrap; }
.footer-bottom__legal a { color: inherit; }
.footer-bottom__legal a:hover { color: var(--platinum); }