/* --- Shared Site Navigation (used on every page) --- */
.site-header {
  --nav-ink: #1C1B18;
  --nav-muted: rgba(28, 27, 24, 0.66);
  --nav-accent: #D9821C;
  --nav-navy: #16263E;
  --nav-glass: #FFFFFF;
  --nav-border: rgba(28, 27, 24, 0.08);
  --nav-font: 'Plus Jakarta Sans', system-ui, sans-serif;
  --nav-mono: 'Space Mono', monospace;
  --nav-ease: cubic-bezier(0.22, 1, 0.36, 1);
  position: fixed; top: 0; left: 0; right: 0; z-index: 2000;
  transition: transform 0.45s var(--nav-ease);
}
.site-header.is-hidden { transform: translateY(-100%); }
body.nav-open { overflow: hidden; }

/* Full-width bar flush to the top; its content lines up with the page's 1240px container */
.site-nav {
  position: relative;
  padding-block: 0.45rem;
  padding-inline: max(clamp(1rem, 4vw, 2rem), calc((100% - 1240px) / 2 + clamp(1rem, 4vw, 2rem)));
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
}
/* The glass lives on a pseudo-element: backdrop-filter on .site-nav itself
   would trap the fixed mobile menu inside the bar. */
.site-nav::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--nav-glass);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--nav-border);
  transition: box-shadow 0.4s ease;
}
.site-header.is-scrolled .site-nav::before { box-shadow: 0 10px 30px -18px rgba(22, 38, 62, 0.4); }

/* Logo */
.site-nav__logo { display: flex; align-items: center; flex-shrink: 0; }
.site-nav__logo img { height: 44px; width: auto; display: block; transition: height 0.4s var(--nav-ease); }

/* Menu button (mobile) */
.site-nav__toggle {
  position: relative; flex-shrink: 0; width: 46px; height: 46px;
  background: var(--nav-ink); border: 0; cursor: pointer;
}
.site-nav__toggle span {
  position: absolute; left: 14px; right: 14px; top: 50%; height: 2px; margin-top: -1px;
  background: #FFFFFF;
  transition: transform 0.4s var(--nav-ease), right 0.3s var(--nav-ease);
}
.site-nav__toggle span:nth-child(1) { transform: translateY(-4px); }
.site-nav__toggle span:nth-child(2) { transform: translateY(4px); right: 19px; }
.site-nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
.site-nav__toggle[aria-expanded="true"] span:nth-child(2) { transform: rotate(-45deg); right: 14px; }

/* Menu: full-screen navy panel on mobile, revealed from the top behind the bar */
.site-nav__menu {
  position: fixed; inset: 0; z-index: -2;
  display: flex; flex-direction: column; align-items: flex-start;
  list-style: none; margin: 0; padding: 7rem 8% 2rem;
  background: var(--nav-navy); counter-reset: nav;
  clip-path: inset(0 0 100% 0); visibility: hidden;
  transition: clip-path 0.6s var(--nav-ease), visibility 0s linear 0.6s;
}
.site-header.is-open .site-nav__menu {
  clip-path: inset(0 0 0 0); visibility: visible;
  transition: clip-path 0.6s var(--nav-ease), visibility 0s;
}
.site-nav__menu > li:first-child { margin-top: auto; }

/* Staggered entrance of the mobile menu items */
.site-nav__menu > li { opacity: 0; transform: translateY(18px); transition: opacity 0.3s ease, transform 0.5s var(--nav-ease); }
.site-header.is-open .site-nav__menu > li { opacity: 1; transform: none; }
.site-header.is-open .site-nav__menu > li:nth-child(1) { transition-delay: 0.15s; }
.site-header.is-open .site-nav__menu > li:nth-child(2) { transition-delay: 0.2s; }
.site-header.is-open .site-nav__menu > li:nth-child(3) { transition-delay: 0.25s; }
.site-header.is-open .site-nav__menu > li:nth-child(4) { transition-delay: 0.3s; }
.site-header.is-open .site-nav__menu > li:nth-child(5) { transition-delay: 0.35s; }
.site-header.is-open .site-nav__menu > li:nth-child(6) { transition-delay: 0.4s; }

/* Links */
.site-nav__link {
  position: relative; z-index: 1;
  display: flex; align-items: baseline; gap: 1rem; padding: 0.3rem 0;
  font-family: var(--nav-font); font-size: clamp(2rem, 9vw, 2.75rem); font-weight: 700; letter-spacing: -0.02em;
  color: #FFFFFF; text-decoration: none; counter-increment: nav;
}
.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--nav-mono); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; color: var(--nav-accent);
}
.site-nav__link[aria-current="page"] { color: var(--nav-accent); }

/* Call to action */
.site-nav__cta {
  display: inline-flex; align-items: center; gap: 0.75rem; margin-top: 1.75rem;
  padding: 0.45rem 0.45rem 0.45rem 1.5rem;
  font-family: var(--nav-font); font-size: 1rem; font-weight: 700;
  color: var(--nav-ink); background: var(--nav-accent); text-decoration: none;
  transition: transform 0.3s var(--nav-ease), box-shadow 0.3s ease;
}
.site-nav__cta-icon {
  display: grid; place-items: center; width: 2.1rem; height: 2.1rem;
  background: var(--nav-ink); color: #FFFFFF; transition: transform 0.4s var(--nav-ease);
}
.site-nav__cta-icon svg { width: 14px; height: 14px; }
.site-nav__cta:hover .site-nav__cta-icon { transform: rotate(-45deg); }

/* Contact details at the foot of the mobile menu */
.site-nav__meta {
  width: 100%; margin-top: auto; padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 1.5rem;
}
.site-nav__meta a {
  font-family: var(--nav-mono); font-size: 0.75rem; letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7); text-decoration: none;
}
.site-nav__meta a:hover { color: #FFFFFF; }

.site-nav__indicator { display: none; }

.site-nav a:focus-visible,
.site-nav__toggle:focus-visible { outline: 2px solid var(--nav-accent); outline-offset: 3px; }

/* --- Desktop: solid white corporate bar, uppercase links, solid black Contact button --- */
@media (min-width: 1024px) {
  .site-nav { padding-block: 1rem; }
  .site-nav::before { -webkit-backdrop-filter: none; backdrop-filter: none; }
  .site-nav__logo img { height: 66px; }
  .site-header.is-scrolled .site-nav { padding-block: 0.6rem; }
  .site-header.is-scrolled .site-nav__logo img { height: 54px; }
  .site-nav__toggle { display: none; }

  .site-nav__menu {
    position: relative; inset: auto; z-index: auto;
    flex-direction: row; align-items: center; gap: clamp(0.5rem, 2.2vw, 2.25rem);
    padding: 0; background: none; clip-path: none; visibility: visible; transition: none;
  }
  .site-nav__menu > li { opacity: 1; transform: none; transition: none; }
  .site-nav__menu > li:first-child { margin-top: 0; }

  .site-nav__link {
    display: block; padding: 0.65rem 0.75rem;
    font-size: 1rem; font-weight: 700; letter-spacing: 0.01em; text-transform: uppercase;
    color: var(--nav-ink); transition: color 0.25s ease;
  }
  .site-nav__link:hover { color: #0B7A70; }
  .site-nav__link::before { content: none; }
  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] { color: var(--nav-ink); }
  /* Without JS, the current page gets a plain gold underline */
  .site-nav__link[aria-current="page"] { text-decoration: underline 2px var(--nav-accent); text-underline-offset: 0.55em; }

  /* With JS running, one sliding underline marks the current page and follows the hover */
  .site-nav__menu.has-indicator .site-nav__link { text-decoration: none; }
  .site-nav__indicator {
    display: block; position: absolute; top: 0; left: 0; z-index: 0; height: 2px;
    background: var(--nav-accent);
    pointer-events: none; opacity: 0;
    transition: transform 0.45s var(--nav-ease), width 0.45s var(--nav-ease), opacity 0.25s ease;
  }
  .site-nav__indicator.is-visible { opacity: 1; }

  .site-nav__cta {
    gap: 0.65rem; margin: 0 0 0 clamp(0.25rem, 1vw, 0.75rem); padding: 1.1rem 2.1rem;
    font-size: 1rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
    color: #FFFFFF; background: #111111;
    transition: background 0.25s ease;
  }
  .site-nav__cta-icon { width: auto; height: auto; background: none; color: #FFFFFF; transition: translate 0.3s var(--nav-ease); }
  .site-nav__cta-icon svg { width: 15px; height: 15px; }
  .site-nav__cta:hover { background: #0B3B3F; }
  .site-nav__cta:hover .site-nav__cta-icon { transform: none; translate: 4px 0; }

  .site-nav__meta { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header, .site-header *, .site-header *::before { transition: none !important; }
}