/* The original header becomes a glass bar only after the hero has left view. */
.variant-b .b-intro > .masthead {
  height: var(--b-header-h);
  min-height: var(--b-header-h);
  flex: 0 0 var(--b-header-h);
}

/* Reserve the same landing space whether the header is in flow or floating. */
.variant-b :is(#main, #work, #approach, #about, #contact) {
  scroll-margin-top: 104px;
}

.variant-b .header.b-header-floating {
  position: fixed;
  z-index: 80;
  top: max(12px, env(safe-area-inset-top));
  right: 0;
  bottom: auto;
  left: 0;
  width: calc(100% - 32px);
  max-width: 1100px;
  height: 68px;
  min-height: 68px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, .82);
  border-radius: 24px;
  background: #f2f2ec;
  color: #1b1b17;
  box-shadow: 0 8px 28px rgba(30, 30, 20, .12), inset 0 0 0 1px rgba(80, 80, 66, .08);
  animation: b-header-glass-in .24s ease-out both;
}

/* An opaque base remains readable when backdrop filtering is unavailable. */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .variant-b .header.b-header-floating {
    background: linear-gradient(135deg, rgba(255, 255, 255, .76), rgba(239, 239, 231, .68));
    -webkit-backdrop-filter: blur(22px) saturate(150%);
    backdrop-filter: blur(22px) saturate(150%);
  }
}

.variant-b .header.b-header-floating .b-logo {
  min-width: 0;
  min-height: 44px;
  flex: 0 1 auto;
  align-items: center;
  gap: 12px;
}
.variant-b .header.b-header-floating .b-logo img {
  width: 72px;
  height: auto;
  flex: none;
  object-fit: contain;
}
.variant-b .header.b-header-floating .b-brand-role {
  max-width: none;
  color: #30302a;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  white-space: nowrap;
}
.variant-b .header.b-header-floating nav {
  min-width: 0;
  gap: 24px;
  font-size: 13px;
  color: #262620;
}
.variant-b .header.b-header-floating nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 8px 0;
}
.variant-b .header.b-header-floating .header-tools {
  flex: none;
  margin-left: auto;
  align-items: center;
  gap: 14px;
}
.variant-b .header.b-header-floating .language {
  min-height: 44px;
  flex: none;
  align-items: center;
  gap: 0;
  border-radius: 100px;
  color: #5b5b50;
  background: rgba(255, 255, 255, .32);
  box-shadow: inset 0 0 0 1px rgba(60, 60, 45, .12);
}
.variant-b .header.b-header-floating .language [data-lang] {
  min-width: 28px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
  color: #45453d;
}
.variant-b .header.b-header-floating .language > span {
  padding: 0 1px;
  font-size: 11px;
  line-height: 1;
}
.variant-b .header.b-header-floating .language [data-lang][aria-pressed="true"] {
  background: rgba(255, 255, 255, .72);
  color: #151511;
  font-weight: 700;
}
.variant-b .header.b-header-floating .b-contact {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  padding: 10px 18px;
  border: 1px solid #20201b;
  font-size: 13px;
  line-height: 1.2;
  background: #20201b;
  color: #fff;
}
.variant-b .header.b-header-floating .b-contact:hover {
  background: rgba(255, 255, 255, .55);
  color: #20201b;
}
.variant-b .header.b-header-floating .menu-toggle {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  flex: none;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(45, 45, 35, .65);
  border-radius: 50%;
  background: rgba(255, 255, 255, .35);
}
.variant-b .header.b-header-floating .menu-toggle span {
  background: #20201b;
}
.variant-b .header.b-header-floating .menu-toggle:hover {
  background: rgba(255, 255, 255, .8);
}
.variant-b .header.b-header-floating :is(a, button):focus-visible {
  outline: 2px solid #20201b;
  outline-offset: 3px;
}

@keyframes b-header-glass-in {
  from { opacity: 0; translate: 0 -6px; }
  to { opacity: 1; translate: 0 0; }
}

@media (max-width: 900px) {
  .variant-b .header.b-header-floating nav { display: none; }
  .variant-b .header.b-header-floating .menu-toggle { display: flex; }
  .variant-b .header.b-header-floating .header-tools { gap: 10px; }
}

@media (max-width: 640px) {
  .variant-b :is(#main, #work, #approach, #about, #contact) { scroll-margin-top: 92px; }
  .variant-b .header.b-header-floating {
    top: max(8px, env(safe-area-inset-top));
    width: calc(100% - 16px);
    height: 64px;
    min-height: 64px;
    padding: 9px 10px;
    gap: 8px;
    border-radius: 22px;
  }
  .variant-b .header.b-header-floating .b-logo { gap: 8px; }
  .variant-b .header.b-header-floating .b-logo img { width: 56px; }
  .variant-b .header.b-header-floating .b-brand-role {
    max-width: 78px;
    font-size: 12.5px;
    line-height: 1.15;
    white-space: normal;
  }
  .variant-b .header.b-header-floating .header-tools { gap: 6px; }
  .variant-b .header.b-header-floating .language [data-lang] {
    width: 24px;
    min-width: 24px;
    padding-inline: 1px;
  }
  .variant-b .header.b-header-floating .b-contact {
    padding: 10px;
    font-size: 12px;
  }
}

@media (max-width: 380px) {
  .variant-b .header.b-header-floating { gap: 6px; }
  .variant-b .header.b-header-floating .b-logo { gap: 6px; }
  .variant-b .header.b-header-floating .b-logo img { width: 50px; }
  .variant-b .header.b-header-floating .b-brand-role { max-width: 70px; font-size: 12px; }
  .variant-b .header.b-header-floating .header-tools { gap: 5px; }
}

@media (max-width: 340px) {
  .variant-b .header.b-header-floating .b-logo img { width: 48px; }
  .variant-b .header.b-header-floating .b-brand-role { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .variant-b .header.b-header-floating { animation: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .variant-b .header.b-header-floating {
    background: #f2f2ec;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}