/* Header styles for K.T.R */

.plb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  background: linear-gradient(to bottom, rgba(5, 3, 10, 0.98), rgba(5, 3, 10, 0.9));
  border-bottom: 1px solid var(--color-border-subtle);
  backdrop-filter: blur(18px);
}

.plb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

.plb-header__brand {
  display: flex;
  align-items: center;
}

.plb-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.plb-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background-image: var(--gradient-primary);
  box-shadow: var(--shadow-glow-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-md);
}

.plb-header__logo-text {
  display: flex;
  flex-direction: column;
}

.plb-header__logo-title {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-tight);
}

.plb-header__logo-subtitle {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.plb-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.plb-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.plb-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-inline: 0.1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.plb-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  border-radius: 999px;
  background-image: var(--gradient-primary);
  opacity: 0;
  transform: scaleX(0.4);
  transform-origin: center;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.plb-header__nav-link:hover,
.plb-header__nav-link:focus-visible {
  color: var(--color-text);
}

.plb-header__nav-link:hover::after,
.plb-header__nav-link:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.plb-header__cta-wrap {
  display: flex;
  align-items: center;
}

.plb-header__cta {
  font-size: var(--font-size-xs);
}

/* Mobile toggle */

.plb-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(15, 11, 26, 0.8);
}

.plb-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal), translate var(--transition-normal);
}

.plb-header__toggle-bar + .plb-header__toggle-bar {
  margin-top: 4px;
}

.plb-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Toggle active state */

.plb-header--menu-open .plb-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.plb-header--menu-open .plb-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.plb-header--menu-open .plb-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 768px) {
  .plb-header {
    height: auto;
  }

  .plb-header__inner {
    padding-block: 0.35rem;
  }

  .plb-header__toggle {
    display: inline-flex;
  }

  .plb-header__nav {
    position: absolute;
    top: calc(var(--header-height) - 6px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4);
    background-color: rgba(5, 3, 10, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform-origin: top center;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  }

  .plb-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    width: 100%;
    margin-bottom: var(--space-4);
  }

  .plb-header__nav-link {
    font-size: var(--font-size-md);
  }

  .plb-header__cta-wrap {
    width: 100%;
  }

  .plb-header__cta {
    width: 100%;
    justify-content: center;
  }

  .plb-header--menu-open .plb-header__nav {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: scaleY(1);
  }
}

/* Medium screens */

@media (min-width: 769px) and (max-width: 1024px) {
  .plb-header__nav-list {
    gap: var(--space-3);
  }

  .plb-header__nav-link {
    font-size: var(--font-size-xs);
  }
}

/* Reduced motion */

@media (prefers-reduced-motion: reduce) {
  .plb-header,
  .plb-header * {
    transition: none !important;
  }
}