:root {
  --kalyx-header-bg: rgba(5, 5, 6, 0.92);
  --kalyx-header-text: #f4f1ea;
  --kalyx-header-muted: #aaa59c;
  --kalyx-header-line: rgba(255, 255, 255, 0.09);
  --kalyx-header-gold: #d4af37;
}

body.kalyx-mobile-menu-open {
  overflow: hidden;
}

.kalyx-site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  min-height: 76px;
  color: var(--kalyx-header-text);
  border-bottom: 1px solid var(--kalyx-header-line);
  background: var(--kalyx-header-bg);
  box-shadow: none;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.kalyx-nav {
  width: 100%;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(24px, 5vw, 72px);
}

.kalyx-wordmark {
  position: relative;
  z-index: 2;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--kalyx-header-text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.125rem;
  font-weight: 300;
  letter-spacing: 0.4em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
}

.kalyx-nav-center {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
  margin-left: auto;
}

.kalyx-nav-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--kalyx-header-muted);
  cursor: pointer;
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: color 220ms ease;
}

.kalyx-nav-link:hover,
.kalyx-nav-link:focus-visible {
  color: #fff;
}

.kalyx-nav-link[aria-current="page"] {
  color: var(--kalyx-header-gold);
}

.kalyx-header-cta {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 0;
  background: transparent;
  color: var(--kalyx-header-text);
  font-family: "Inter", "Noto Sans JP", sans-serif;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: border-color 220ms ease, color 220ms ease, background-color 220ms ease;
}

.kalyx-header-cta::after {
  content: none !important;
}

.kalyx-header-cta:hover,
.kalyx-header-cta:focus-visible {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
}

.kalyx-nav-actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
}

.kalyx-lang-switch {
  position: relative;
  width: 82px;
  min-height: 34px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  align-items: center;
  gap: 0;
  padding: 2px;
  border: 1px solid rgba(181, 156, 118, 0.25);
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.66);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.kalyx-lang-indicator {
  position: absolute;
  z-index: 0;
  top: 2px;
  bottom: 2px;
  left: 2px !important;
  width: calc(50% - 2px) !important;
  border-radius: 999px;
  background: linear-gradient(135deg, #b59c76, #8a7554);
  box-shadow: 0 2px 8px rgba(181, 156, 118, 0.28), inset 0 1px 1px rgba(255, 255, 255, 0.34);
  transform: translateX(0);
  transition: transform 360ms cubic-bezier(0.19, 1, 0.22, 1);
}

.kalyx-lang-switch[data-active-language="jp"] .kalyx-lang-indicator,
.kalyx-lang-switch[data-active-language="fr"] .kalyx-lang-indicator {
  transform: translateX(100%);
}

.kalyx-lang-button {
  position: relative;
  z-index: 1;
  min-width: 0 !important;
  width: 38px !important;
  min-height: 28px !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 999px !important;
  background: transparent !important;
  color: rgba(255, 255, 255, 0.52) !important;
  cursor: pointer;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.55rem !important;
  font-weight: 400 !important;
  letter-spacing: 0.1em !important;
  line-height: 1 !important;
  text-transform: uppercase;
  transition: color 220ms ease;
}

.kalyx-lang-button[aria-pressed="true"],
.kalyx-lang-button.active {
  color: #050505 !important;
}

.kalyx-lang-button:hover,
.kalyx-lang-button:focus-visible {
  color: #fff;
}

.kalyx-lang-button[aria-pressed="true"]:hover,
.kalyx-lang-button[aria-pressed="true"]:focus-visible {
  color: #050505 !important;
}

.kalyx-mobile-toggle,
.kalyx-mobile-nav {
  display: none;
}

.kalyx-mobile-toggle {
  width: 44px;
  height: 44px;
  position: relative;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

.kalyx-mobile-toggle::before,
.kalyx-mobile-toggle::after {
  content: "";
  position: absolute;
  width: 23px;
  height: 1px;
  background: currentColor;
  transition: transform 260ms cubic-bezier(0.19, 1, 0.22, 1);
}

.kalyx-mobile-toggle::before {
  transform: translateY(-4px);
}

.kalyx-mobile-toggle::after {
  transform: translateY(4px);
}

.kalyx-mobile-toggle[aria-expanded="true"]::before {
  transform: rotate(45deg);
}

.kalyx-mobile-toggle[aria-expanded="true"]::after {
  transform: rotate(-45deg);
}

.kalyx-mobile-nav {
  position: fixed;
  z-index: 99;
  top: 66px;
  left: 0;
  right: 0;
  height: calc(100dvh - 66px);
  overflow-y: auto;
  padding: 34px 24px max(34px, env(safe-area-inset-bottom));
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(5, 5, 6, 0.98);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 220ms ease, transform 220ms ease, visibility 220ms ease;
}

.kalyx-mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.kalyx-mobile-nav-inner {
  width: min(100%, 520px);
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  margin: 0 auto;
}

.kalyx-mobile-nav .kalyx-nav-link {
  width: 100%;
  min-height: 48px;
  justify-content: flex-start;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  color: #d2cec7;
  font-size: 0.72rem;
}

.kalyx-mobile-nav .kalyx-header-cta {
  width: 100%;
  min-height: 48px;
  margin-top: 20px;
}

@media (max-width: 1200px) {
  .kalyx-nav-center {
    gap: 16px;
  }
  .kalyx-nav-link,
  .kalyx-header-cta {
    letter-spacing: 0.22em;
  }
}

@media (max-width: 1080px) {
  .kalyx-site-header {
    min-height: 66px;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .kalyx-nav {
    min-height: 66px;
    padding: 0 16px 0 20px;
  }
  .kalyx-nav-center {
    display: none;
  }
  .kalyx-nav-actions {
    margin-left: auto;
    gap: 6px;
  }
  .kalyx-mobile-toggle {
    display: inline-flex;
  }
  .kalyx-mobile-nav {
    display: block;
  }
}

@media (max-width: 420px) {
  .kalyx-wordmark {
    font-size: 1rem;
  }
  .kalyx-lang-switch {
    width: 78px;
  }
  .kalyx-lang-button {
    width: 36px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kalyx-site-header *,
  .kalyx-site-header *::before,
  .kalyx-site-header *::after {
    transition-duration: 0.01ms !important;
  }
}