/* Sigma header — transparent shell + floating bar (DTK sticky) */

.sigma-header-shell {
  position: relative;
  z-index: 50;
  background: transparent;
  padding: 12px var(--sigma-inline-pad) 0;
  pointer-events: none;
}

.sigma-header-shell > * {
  pointer-events: auto;
}

.sigma-header {
  position: relative;
  isolation: isolate;
  width: min(calc(100% - var(--sigma-gutter)), calc(var(--sigma-container) - 48px));
  max-width: calc(var(--sigma-container) - 48px);
  margin-inline: auto;
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 999px;
  transition: none;
}

/* Glass on ::before so backdrop-filter does not trap the mobile nav overlay (position:fixed). */
.sigma-header::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 8px 32px rgba(4, 92, 180, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  pointer-events: none;
  z-index: 0;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.sigma-header > * {
  position: relative;
  z-index: 1;
}

.sigma-header.is-scrolled::before,
.sigma-header.block-is-sticky::before,
.sigma-header.element-is-sticky::before {
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 12px 40px rgba(4, 92, 180, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.sigma-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1.25rem;
}

.sigma-header__logo img {
  display: block;
  height: 44px;
  width: auto;
}

.sigma-header__nav .wp-block-navigation {
  gap: 0.25rem;
}

.sigma-header__nav .wp-block-navigation-item__content {
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--sigma-ink);
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease;
}

.sigma-header__nav .wp-block-navigation-item__content:hover {
  background: rgba(4, 92, 180, 0.08);
  color: var(--sigma-blue);
}

.sigma-header__nav .wp-block-navigation-item:last-child .wp-block-navigation-item__content {
  background: linear-gradient(135deg, var(--sigma-blue), var(--sigma-blue-dark));
  color: var(--sigma-white) !important;
  box-shadow: 0 4px 16px rgba(4, 92, 180, 0.35);
}

.sigma-header__nav .wp-block-navigation-item:last-child .wp-block-navigation-item__content:hover {
  background: linear-gradient(135deg, var(--sigma-blue-dark), var(--sigma-blue));
  color: var(--sigma-white) !important;
}

.sigma-header__nav .wp-block-navigation__responsive-container-open {
  color: var(--sigma-ink);
}

/* DTK sticky: only the header shell needs visible overflow */
body.sigma-site .sigma-header-shell,
body.sigma-site .sticky-block-wrapper {
  overflow: visible;
}

.sigma-header.block-is-sticky,
.sigma-header.element-is-sticky {
  z-index: 50 !important;
}

@media (max-width: 781px) {
  .sigma-header {
    border-radius: 20px;
  }

  .sigma-header-shell {
    padding-top: 8px;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container-open {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid rgba(4, 92, 180, 0.14);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.55);
    color: var(--sigma-blue);
    cursor: pointer;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open {
    padding:
      max(1.25rem, env(safe-area-inset-top, 0px))
      var(--sigma-gutter)
      max(1.5rem, env(safe-area-inset-bottom, 0px));
    align-items: stretch !important;
    background:
      radial-gradient(ellipse 80% 55% at 12% 8%, rgba(56, 189, 248, 0.2), transparent 58%),
      radial-gradient(ellipse 70% 50% at 92% 88%, rgba(4, 92, 180, 0.18), transparent 55%),
      linear-gradient(180deg, #eef4fb 0%, #f8fafc 42%, #edf2f8 100%) !important;
    color: var(--sigma-ink);
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open > .wp-block-navigation__responsive-close {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    width: 100% !important;
    max-width: none !important;
    height: 100%;
    margin: 0 !important;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation__responsive-dialog {
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    position: relative;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation__responsive-container-content {
    width: 100% !important;
    max-width: none !important;
    margin-inline: auto;
    padding-top: calc(max(1rem, env(safe-area-inset-top, 0px)) + 2.75rem + 0.75rem);
    gap: 0.65rem;
    align-items: stretch !important;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation__container {
    width: 100% !important;
    max-width: none !important;
    align-items: stretch !important;
    gap: 0.65rem;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation-item {
    width: 100%;
    align-items: stretch !important;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation-item__content {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 1rem 1.15rem;
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: var(--sigma-radius-md);
    background: rgba(255, 255, 255, 0.72);
    box-shadow: var(--sigma-glass-shadow);
    font-family: 'Outfit', ui-sans-serif, system-ui, sans-serif;
    font-size: 1.12rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--sigma-ink);
    text-align: left;
    text-decoration: none;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .current-menu-item .wp-block-navigation-item__content {
    background: rgba(4, 92, 180, 0.1);
    border-color: rgba(4, 92, 180, 0.22);
    color: var(--sigma-blue);
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation-item:last-child .wp-block-navigation-item__content {
    margin-top: 0.5rem;
    padding: 1rem 1.25rem;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--sigma-blue), var(--sigma-blue-dark));
    box-shadow: 0 6px 24px rgba(4, 92, 180, 0.35);
    color: var(--sigma-white) !important;
    font-weight: 700;
    text-align: center;
  }

  body.sigma-site .sigma-header__nav .wp-block-navigation__responsive-container.is-menu-open .wp-block-navigation__responsive-container-close {
    position: absolute;
    top: max(1rem, env(safe-area-inset-top, 0px));
    right: var(--sigma-gutter);
    width: 2.75rem;
    height: 2.75rem;
    max-width: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: var(--sigma-ink);
    cursor: pointer;
  }
}