/* ── Header ───────────────────────────────────────────────
   Transparent over the hero, navy glass after 24px of scroll, hides on scroll down and
   returns on scroll up. Pages without a hero use body[data-header="solid"]. */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  color: #fff;
  transition: transform .45s var(--msp-ease-out), background-color .35s ease, box-shadow .35s ease;
}
.site-header__bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  height: var(--msp-header-h);
  transition: height .35s var(--msp-ease-out);
}
.site-header.is-scrolled,
body[data-header="solid"] .site-header {
  background: rgb(8 17 25 / .92);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  box-shadow: 0 1px 0 var(--msp-on-dark-line);
}
.site-header.is-scrolled .site-header__bar { height: 72px; }
.site-header.is-hidden { transform: translateY(-100%); }

.site-logo { display: block; }
.site-logo img { width: auto; height: 40px; }

/* Navigation pill */
.site-nav { justify-self: center; }
.site-nav__list {
  display: flex; align-items: center; gap: 2px;
  padding: 6px;
  border: 1px solid rgb(255 255 255 / .12);
  border-radius: var(--msp-radius-pill);
  background: rgb(8 17 25 / .38);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color .35s, border-color .35s;
}
.site-header.is-scrolled .site-nav__list,
body[data-header="solid"] .site-nav__list { background: rgb(255 255 255 / .04); border-color: rgb(255 255 255 / .08); }
.site-nav__link {
  display: inline-flex; align-items: center; gap: 6px;
  height: 44px; padding: 0 18px;
  border-radius: var(--msp-radius-pill);
  font-size: 15.5px; font-weight: 400; color: #fff;
  transition: background-color .25s;
}
.site-nav__link:hover, .site-nav__link[aria-expanded="true"] { background: rgb(255 255 255 / .12); }
.site-nav__link .icon { width: 16px; height: 16px; opacity: .8; transition: transform .3s var(--msp-ease-out); }
.site-nav__link[aria-expanded="true"] .icon { transform: rotate(180deg); }

/* Right side */
.site-header__actions { display: flex; align-items: center; gap: 18px; justify-self: end; }
.header-call { display: flex; align-items: center; gap: 12px; font-size: 13px; line-height: 1.3; color: var(--msp-on-dark-muted); }
.header-call strong { display: block; font-size: 15px; font-weight: 500; color: #fff; }
.header-call__icon {
  display: grid; place-items: center; width: 44px; height: 44px;
  border: 1px solid rgb(255 255 255 / .2); border-radius: 50%;
  color: var(--msp-primary);
  transition: background-color .3s, border-color .3s, color .3s;
}
.header-call__icon .icon { width: 19px; height: 19px; }
.header-call:hover .header-call__icon { background: var(--msp-primary); border-color: var(--msp-primary); color: var(--msp-secondary); }
.nav-toggle {
  display: none; place-items: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--msp-primary); color: var(--msp-secondary);
}
.nav-toggle .icon { width: 22px; height: 22px; }

/* ── Mega menu ── */
.mega {
  position: absolute; left: 50%; top: calc(100% + 4px);
  width: min(1180px, calc(100vw - 2 * var(--msp-gutter)));
  opacity: 0; visibility: hidden;
  transform: translate(-50%, 12px);
  transition: opacity .25s var(--msp-ease-out), transform .35s var(--msp-ease-out), visibility 0s .35s;
}
.mega::before { content: ""; position: absolute; left: 0; right: 0; bottom: 100%; height: 34px; } /* hover bridge */
.mega.is-open { opacity: 1; visibility: visible; transform: translate(-50%, 0); transition-delay: 0s; }
.mega__panel {
  display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 12px;
  padding: 12px;
  border-radius: var(--msp-radius-lg);
  background: #fff; color: var(--msp-text);
  box-shadow: var(--msp-shadow-lg);
}
.mega__links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: start; gap: 4px; padding: 14px 14px 10px; }
.mega--projects .mega__links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.mega__head {
  grid-column: 1 / -1;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 2px 12px 14px; margin-bottom: 8px;
  border-bottom: 1px solid var(--msp-divider);
}
.mega__kicker { font-size: 13px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--msp-muted); }
.mega__all { display: inline-flex; align-items: center; gap: 6px; font-size: 14.5px; font-weight: 500; color: var(--msp-accent); }
.mega__all .icon { width: 16px; height: 16px; transition: transform .3s var(--msp-ease-out); }
.mega__all:hover .icon { transform: translateX(3px); }

.mega-link { display: flex; align-items: flex-start; gap: 14px; padding: 12px; border-radius: var(--msp-radius-sm); transition: background-color .2s; }
.mega-link:hover, .mega-link:focus-visible { background: var(--msp-surface); }
.mega-link__icon {
  display: grid; place-items: center; flex: none;
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--msp-surface); color: var(--msp-secondary);
  transition: background-color .25s, color .25s;
}
.mega-link__icon .icon { width: 22px; height: 22px; }
.mega-link:hover .mega-link__icon, .mega-link:focus-visible .mega-link__icon { background: var(--msp-primary); }
.mega-link__title { display: block; font-size: 16px; font-weight: 500; line-height: 1.3; color: var(--msp-secondary); }
.mega-link__desc { display: block; margin-top: 3px; font-size: 14px; line-height: 1.4; color: var(--msp-muted); }
.mega-link--compact { align-items: center; padding: 10px; }
.mega-link--compact .mega-link__icon { width: 40px; height: 40px; }

.mega__promo {
  position: relative; isolation: isolate; overflow: hidden;
  display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-start; gap: 12px;
  min-height: 360px; padding: 26px;
  border-radius: var(--msp-radius-md);
  background: var(--msp-secondary); color: #fff;
}
.mega__promo img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; }
.mega__promo::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgb(8 17 25 / .15) 0%, rgb(8 17 25 / .92) 62%); }
.mega__promo-title { font-size: 26px; line-height: 1.15; color: #fff; }
.mega__promo-text { font-size: 15px; line-height: 1.55; color: rgb(255 255 255 / .82); margin-bottom: 6px; }

/* ── Mobile menu ── */
.mobile-menu {
  position: fixed; inset: 0; z-index: 70;
  display: flex; flex-direction: column;
  overflow-y: auto; overscroll-behavior: contain;
  background: var(--msp-secondary); color: #fff;
  visibility: hidden;
  transform: translateX(100%);
  transition: transform .5s var(--msp-ease-inout), visibility 0s .5s;
}
.mobile-menu.is-open { visibility: visible; transform: none; transition-delay: 0s; }
.mobile-menu__top {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--msp-header-h); padding-inline: var(--msp-gutter);
  border-bottom: 1px solid var(--msp-on-dark-line);
}
.mobile-menu__top .site-logo img { height: 34px; }
.mobile-menu__close {
  display: grid; place-items: center; width: 48px; height: 48px;
  border: 1px solid rgb(255 255 255 / .22); border-radius: 50%;
}
.mobile-menu__nav { padding: 8px var(--msp-gutter) 0; }
.m-acc__btn, .m-link {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
  padding: 18px 0;
  border-bottom: 1px solid var(--msp-on-dark-line);
  font-size: 24px; font-weight: 400; text-align: left;
}
.m-acc__btn .icon, .m-link .icon { width: 22px; height: 22px; color: var(--msp-primary); transition: transform .35s var(--msp-ease-out); }
.m-acc__btn[aria-expanded="true"] .icon { transform: rotate(45deg); }
.m-acc__panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .4s var(--msp-ease-out); }
.m-acc__panel.is-open { grid-template-rows: 1fr; }
.m-acc__list { overflow: hidden; display: grid; gap: 2px; }
.m-acc__panel.is-open .m-acc__list { padding: 10px 0 16px; }
.m-acc__list--2col { grid-template-columns: 1fr 1fr; column-gap: 16px; }
.m-acc__list a { display: block; padding: 9px 0; font-size: 17px; color: var(--msp-on-dark-muted); }
.m-acc__list a:hover { color: #fff; }
.mobile-menu__cta { display: grid; gap: 12px; padding: 28px var(--msp-gutter) 20px; margin-top: auto; }
.mobile-menu__contact { display: grid; gap: 12px; padding: 0 var(--msp-gutter) 32px; }
.mobile-menu__contact a { display: inline-flex; align-items: center; gap: 12px; color: var(--msp-on-dark-muted); }
.mobile-menu__contact .icon { color: var(--msp-primary); }

/* ── Breakpoints ── */
@media (max-width: 1279px) {
  .header-call__text { display: none; }
}
@media (max-width: 1099px) {
  .site-nav { display: none; }
  .nav-toggle { display: grid; }
  .site-header__bar { grid-template-columns: auto 1fr; }
}
@media (max-width: 639px) {
  .site-logo img { height: 32px; }
  .site-header__cta, .header-call { display: none; }
}