:root {
  --pad: clamp(10px, 3vw, 50px);
  --glow-r: 0px;
  --glow-color: rgba(5, 5, 5, 0.993);
  --h: clamp(50px, 8vw, 70px);

  --scroll-threshold: 10;
  --scroll-lag: 10;
  --hover-bg-enable: 0;
  --hover-bg-range: 120;
}

.pk-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--h);
  z-index: 2000;
  background: rgba(41, 41, 41, 0);
  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0);
  transition:
    background 0.35s ease,
    box-shadow 0.35s ease;

  --ui-scale: 1.16;
  --ui-speed: 0.75s;
  --ui-ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  --ui-color: var(--hero-text, #e3fc00);
  --ui-color-muted: var(--color-secondary);

  --ui-text-glow:
    0 0 var(--glow-r, 6px) var(--glow-color, rgba(255, 255, 255, 0.45)),
    0 0 var(--glow-r, 6px) var(--glow-color, rgba(255, 255, 255, 0.45));
  --ui-box-glow: 0 0 var(--glow-r, 6px)
    var(--glow-color, rgba(255, 255, 255, 0.45));
  --ui-filter-glow: drop-shadow(
    0 0 var(--glow-r, 6px) var(--glow-color, rgba(255, 255, 255, 0.45))
  );
}
.pk-header.is-on {
  background: var(--hdr-bg-on);
  box-shadow: var(--hdr-shadow-on);
}

.pk-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.pk-header a {
  font: 600 20px/1.2 var(--font-ui-menu);
  color: var(--ui-color);
  text-decoration: none;
  text-shadow: var(--ui-text-glow);
  transition:
    color 0.35s ease,
    text-shadow 0.35s ease;
}
#pkHeader.is-on a:link,
#pkHeader.is-on a:visited {
  color: var(--hero-text-muted) !important;
}

.pk-home-link {
  margin-left: var(--pad);
  display: inline-flex;
  align-items: center;
  justify-content: center;

  border-radius: 10px;
}

.pk-home-link .ico {
  font-size: clamp(25px, 5vw, 40px);
  width: clamp(28px, 4vw, 40px) !important;
  height: clamp(28px, 4vw, 40px) !important;
  transform: scale(1);
  transition: transform var(--ui-speed) var(--ui-ease);
}

.pk-home-link:hover .ico,
.pk-home-link:focus-visible .ico {
  transform: scale(var(--ui-scale));
}

.pk-home-link:active .ico {
  transform: scale(calc(var(--ui-scale) * 0.92));
}

#pkHeader.is-on .pk-home-link {
  color: var(--hero-text-muted);
}

.pk-burger {
  margin-right: var(--pad);

  width: clamp(40px, 5vw, 50px);
  height: clamp(35px, 5vw, 40px);
  position: relative;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--ui-color);
  transform: scale(1);
  transition:
    transform var(--ui-speed) var(--ui-ease),
    color 0.2s ease;
  touch-action: manipulation;
}
#pkHeader.is-on .pk-burger {
  color: var(--hero-text-muted);
}
.pk-burger:hover,
.pk-burger:focus-visible {
  transform: scale(var(--ui-scale));
}
.pk-burger:active {
  transform: scale(calc(var(--ui-scale) * 0.92));
}
.pk-burger span {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: currentColor;
  box-shadow: var(--ui-box-glow);
  transition:
    transform 0.35s ease,
    opacity 0.25s ease,
    top 0.35s ease,
    bottom 0.35s ease;
}
.pk-burger span:nth-child(1) {
  top: 10px;
}
.pk-burger span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}
.pk-burger span:nth-child(3) {
  bottom: 10px;
}
.pk-menu-open #pkBurger span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}
.pk-menu-open #pkBurger span:nth-child(2) {
  opacity: 0;
}
.pk-menu-open #pkBurger span:nth-child(3) {
  bottom: auto;
  top: 50%;
  transform: translateY(-50%) rotate(-45deg);
}

.pk-overlay {
  position: fixed;
  inset: 0;
  background: transparent;
  z-index: 1999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.pk-menu-open #pkOverlay {
  opacity: 1;
  pointer-events: auto;
}

.pk-drawer {
  position: fixed;
  right: var(--pad, 40px);
  top: calc(var(--header-h, var(--h, 70px)) + 8px);
  z-index: 2460;
  color: var(--color-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  border-radius: 14px;
  box-shadow: var(--shadow-2);
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  padding: 12px 20px 10px 20px;
  width: max-content;
  min-width: 180px;
  max-width: min(92vw, 440px);
  max-height: calc(100dvh - var(--h, 70px) - 24px);
  overflow: auto;

  transform: translateY(-24px);
  opacity: 0;
  will-change: transform, opacity;
  transition:
    transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1),
    opacity 0.6s ease;
}

.pk-drawer__main a {
  display: block;
  font: 600 18px/1.3 var(--font-ui-menu);
  color: var(--color-primary) !important;
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--color-primary);
}

.pk-drawer__main a:hover {
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.pk-drawer__main a + a {
  margin-top: 3px;
}
.pk-hr {
  border: 0;
  height: 1px;
  margin: 10px 0 10px;
  background: color-mix(in srgb, var(--color-primary) 14%, transparent);
}
.pk-drawer__footer {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pk-menu-open #pkNavDrawer {
  transform: translateY(0);
  opacity: 1;
}

.pk-theme-btn {
  inline-size: 40px;
  block-size: 40px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transform: scale(1);
  transition:
    transform 0.18s var(--ui-ease),
    color 0.2s ease;
}
.pk-theme-btn .ico {
  font-size: 26px;
}

.pk-drawer__footer .pk-login-btn .ico {
  display: inline-block;
  width: calc(var(--ico) + 10px);
  height: calc(var(--ico) + 10px);

  stroke: currentColor;
  fill: none;

  stroke-width: 26;

  stroke-linecap: round;
  stroke-linejoin: round;
}

.pk-theme-btn:hover {
  transform: scale(1.08);
}
.pk-theme-btn:active {
  transform: scale(0.94);
}

@keyframes themeIconOut {
  to {
    transform: translateY(-40%);
    opacity: 0;
  }
}
@keyframes themeIconIn {
  from {
    transform: translateY(40%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
.pk-theme-btn.is-swap .ico {
  animation: themeIconOut 0.22s ease both;
}
.pk-theme-btn.is-swap-in .ico {
  animation: themeIconIn 0.22s ease both;
}

.pk-lang2 {
  position: relative;
}
.pk-lang2__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: transparent;
  border: 0px solid color-mix(in srgb, var(--color-primary) 16%, transparent);
  color: var(--color-primary);
  cursor: pointer;
  font: 600 18px/1 var(--font-ui-menu);
  transition:
    transform 0.18s var(--ui-ease),
    background 0.2s ease,
    border-color 0.2s ease;
}

.pk-lang2__btn:hover {
  transform: scale(1.02);
}
.pk-lang2__btn:active {
  transform: scale(0.98);
}
.pk-lang2__btn .ico {
  font-size: 26px;
}

.pk-lang2__menu {
  position: fixed;
  left: 0;
  top: 0;
  color: var(--color-primary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  border-radius: 10px;
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  box-shadow: var(--shadow-2);
  padding: 6px;
  margin: 0;
  list-style: none;
  z-index: 3001;
  min-width: 160px;
  font: 600 16px/1 var(--font-ui-menu);
}
.pk-lang2__menu[hidden] {
  display: none;
}
.pk-lang2__menu li {
  padding: 12px 10px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--color-primary);
}
.pk-lang2__menu li:hover {
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.pk-drawer__footer .btn-small {
  width: 38px;
  height: 38px;
  color: var(--color-primary, #ddd);
}
.pk-drawer__footer .btn-small .icon {
  width: 18px;
  height: 18px;
}

@media (max-width: 639px) {
  #pkHeader {
    --h: 50px;
  }
  .pk-header a {
    font-size: 16px;
  }
}