@layer components {

.kn-hdr {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--hdr-bg);
  border-bottom: 2px solid var(--border-strong);
  transition: transform 0.35s ease;
  will-change: transform;
}
.kn-hdr--hidden { transform: translateY(-100%); }
.kn-hdr--overlay { position: fixed; top: 0; left: 0; right: 0; }
.kn-hdr--overlay ~ .kn-hero-block .kn-hero { padding-top: 104px; }
.admin-bar .kn-hdr { top: 32px; }
.kn-hdr.is-scrolled {
  background: var(--hdr-bg-scrolled);
}

.kn-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 110;
  height: 2px;
  width: var(--progress, 0%);
  background: var(--accent);
  pointer-events: none;
  transition: width 0.08s linear;
}

.kn-hdr__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 6px 16px;
}

.kn-hdr__logo { display: flex; flex-direction: row; align-items: center; justify-self: start; }
.kn-hdr__logo-link { display: flex; flex-direction: row; align-items: center; gap: 8px; text-decoration: none; }
.kn-hdr__logo-link:hover { opacity: 1; }
.kn-hdr__logo-link > div { display: flex; flex-direction: column; }
.kn-hdr__avatar { width: 52px; height: 52px; border-radius: 0; object-fit: cover; flex-shrink: 0; display: block; border: 2px solid var(--border-strong); }
.kn-hdr__logo-name { display: block; margin-bottom: 3px; font-family: var(--font-display); font-size: 0.9375rem; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; color: var(--text-primary); }
.kn-hdr__logo-tagline { display: block; font-family: var(--font-mono); font-size: 0.6875rem; line-height: 1.5; color: var(--text-secondary); font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; }

.kn-hdr__nav { display: flex; gap: 16px; align-items: center; justify-self: end; }
.kn-hdr__nav::before { content: ""; width: 1px; height: 22px; background: var(--border); }
.kn-hdr__nav > a { position: relative; padding: 5px 0; font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-primary); text-decoration: none; }
.kn-hdr__nav > a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease; }
.kn-hdr__nav > a:hover { color: var(--accent-ink); }
.kn-hdr__nav > a:hover::after { transform: scaleX(1); }
.kn-hdr__nav > a.is-active { color: var(--text-primary); }
.kn-hdr__nav > a.is-active::after { transform: scaleX(1); }
.kn-hdr__nav > a.is-active:hover { opacity: 1; }
@media (prefers-reduced-motion: reduce) { .kn-hdr__nav > a::after { transition: none; } }

.kn-hdr__lang { display: flex; align-items: center; gap: 6px; margin-left: 16px; font-size: 0.875rem; font-weight: 700; }
.kn-hdr__lang-current { color: var(--accent-ink); cursor: default; }
.kn-hdr__lang-link { color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.kn-hdr__lang-link:hover { color: var(--accent-ink); }
.kn-hdr__lang-sep { color: var(--text-secondary); opacity: 0.4; }

.kn-hdr__end { display: flex; align-items: center; gap: 8px; justify-self: end; margin-left: 16px; }

.kn-hdr__theme { display: none; }

.kn-hdr__toggle { display: none; align-items: center; justify-content: center; width: 40px; height: 40px; padding: 0; background: none; border: 2px solid transparent; border-radius: 0; color: var(--text-primary); cursor: pointer; }
.kn-hdr__toggle:hover { background: var(--surface-subtle); }
.kn-hdr__toggle:active { transform: scale(0.9); background: var(--accent-light); }
.kn-hdr:has(.kn-mob-nav.is-open) .kn-hdr__toggle { color: var(--accent-ink); background: var(--accent-light); }
.kn-hdr__toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.kn-hdr__toggle-box { position: relative; display: block; width: 22px; height: 16px; }
.kn-hdr__toggle-box span { position: absolute; left: 0; right: 0; height: 2px; border-radius: 2px; background: currentColor; transition: top 0.3s cubic-bezier(0.22, 1, 0.36, 1), left 0.25s ease, transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.2s ease; }
.kn-hdr__toggle-box span:nth-child(1) { top: 0; }
.kn-hdr__toggle-box span:nth-child(2) { top: 7px; left: 40%; }
.kn-hdr__toggle-box span:nth-child(3) { top: 14px; }
.kn-hdr__toggle:hover .kn-hdr__toggle-box span:nth-child(2) { left: 0; }
.kn-hdr:has(.kn-mob-nav.is-open) .kn-hdr__toggle-box span:nth-child(1) { top: 7px; transform: rotate(45deg); }
.kn-hdr:has(.kn-mob-nav.is-open) .kn-hdr__toggle-box span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.kn-hdr:has(.kn-mob-nav.is-open) .kn-hdr__toggle-box span:nth-child(3) { top: 7px; transform: rotate(-45deg); }
@media (prefers-reduced-motion: reduce) {
  .kn-hdr__toggle, .kn-hdr__toggle-box span { transition: none; }
}

@media screen and (max-width: 782px) {
  .admin-bar .kn-hdr { top: 50px; }
}
@media screen and (max-width: 600px) {
  .admin-bar .kn-hdr { top: 46px; }
  .admin-bar.is-admin-bar-scrolled .kn-hdr { top: 0; }
}
@media (max-width: 900px) {
  .kn-hdr__inner { max-width: none; padding: 8px 20px; display: flex; align-items: center; }
  .kn-hdr__avatar { width: 46px; height: 46px; border-radius: 0; align-self: center; }
  .kn-hdr__logo-link { align-items: stretch; }
  .kn-hdr__logo-link > div { align-self: stretch; justify-content: space-between; }
  .kn-hdr__logo-name { font-size: 0.875rem; }
  .kn-hdr__logo-tagline { font-size: 0.625rem; letter-spacing: 0.1em; }
  .kn-hdr__nav { display: none; }
  .kn-hdr__end { margin-left: auto; }
  .kn-hdr__toggle { display: flex; order: -1; }
}
@media (max-width: 900px) {
  .kn-hdr--glass ~ .kn-hero-block .kn-hero { padding-top: 112px; }
}
.kn-hdr--glass .kn-mob-nav { background: var(--hdr-bg-scrolled); }

}