/* =============================================================
   SITE HEADER
   All rules scoped under .site-header
   ============================================================= */

.site-header {
  --sh-navy-900: #071B31;
  --sh-navy-800: #0A2F52;
  --sh-teal-500: #14B8A6;
  --sh-teal-300: #5EEAD4;
  --sh-white: #FFFFFF;
  --sh-ink: #0A2F52;
  --sh-ink-soft: #5B7186;
  --sh-line: rgba(255, 255, 255, 0.16);
  --sh-font-display: 'Bricolage Grotesque', 'Inter', sans-serif;
  --sh-font-body: 'Inter', sans-serif;

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.4rem 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
  font-family: var(--sh-font-body);
}

.site-header.is-scrolled {
  padding: 0.9rem 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #E7EEF2;
  box-shadow: 0 12px 28px -20px rgba(10, 47, 82, 0.35);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* ---------- Brand ---------- */
.site-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.site-header-brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.7rem;
  background: linear-gradient(150deg, var(--sh-teal-500), #0EA5A0);
  color: var(--sh-navy-900);
  font-size: 1.15rem;
  flex-shrink: 0;
}

.site-header-brand-text {
  font-family: var(--sh-font-display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.1;
  color: var(--sh-white);
  transition: color 0.35s ease;
}

.site-header-brand-text span {
  display: block;
  font-family: var(--sh-font-body);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--sh-teal-300);
}

.site-header.is-scrolled .site-header-brand-text {
  color: var(--sh-ink);
}

/* ---------- Nav links (desktop) ---------- */
.site-header-nav {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}

.site-header-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  padding: 0.3rem 0;
  transition: color 0.3s ease;
}

.site-header-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--sh-teal-500);
  transition: width 0.3s ease;
}

.site-header-link:hover,
.site-header-link.is-active {
  color: var(--sh-white);
}

.site-header-link:hover::after,
.site-header-link.is-active::after {
  width: 100%;
}

.site-header.is-scrolled .site-header-link {
  color: var(--sh-ink-soft);
}

.site-header.is-scrolled .site-header-link:hover,
.site-header.is-scrolled .site-header-link.is-active {
  color: var(--sh-ink);
}

/* ---------- Actions ---------- */
.site-header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-header-cta {
  display: inline-flex;
  align-items: center;
  font-family: var(--sh-font-body);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--sh-navy-900);
  background: linear-gradient(90deg, var(--sh-teal-500), #0EA5A0);
  padding: 0.65rem 1.3rem;
  border-radius: 0.6rem;
  text-decoration: none;
  box-shadow: 0 8px 18px -8px rgba(20, 184, 166, 0.55);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.site-header-cta:hover {
  transform: translateY(-2px);
  color: var(--sh-navy-900);
  box-shadow: 0 12px 22px -8px rgba(20, 184, 166, 0.65);
}

.site-header-cta:focus-visible {
  outline: 2px solid var(--sh-teal-300);
  outline-offset: 3px;
}

/* ---------- Mobile toggle ---------- */
.site-header-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.4rem;
  height: 2.4rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.site-header-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--sh-white);
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}

.site-header.is-scrolled .site-header-toggle span {
  background: var(--sh-ink);
}

.site-header-toggle:focus-visible {
  outline: 2px solid var(--sh-teal-500);
  outline-offset: 3px;
}

.site-header-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.site-header-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .site-header-toggle {
    display: flex;
  }

  .site-header-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(78vw, 320px);
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 6.5rem 2rem 2rem;
    background: linear-gradient(165deg, var(--sh-navy-900), var(--sh-navy-800));
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
  }

  .site-header-nav.is-open {
    transform: translateX(0);
  }

  .site-header-link {
    width: 100%;
    padding: 0.85rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--sh-line);
    color: var(--sh-white);
  }

  .site-header-nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(7, 27, 49, 0.55);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
    z-index: -1;
  }

  .site-header-nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 575.98px) {
  .site-header-brand-text {
    font-size: 1.02rem;
  }

  .site-header-cta {
    padding: 0.55rem 1rem;
    font-size: 0.82rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .site-header-nav,
  .site-header-toggle span,
  .site-header-link,
  .site-header-cta {
    transition: none !important;
  }
}