/* Header styles for Polvar Scene */

.ps-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: radial-gradient(circle at 0 0, rgba(60, 255, 107, 0.16), transparent 55%),
              linear-gradient(180deg, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.92));
  border-bottom: 1px solid rgba(60, 255, 107, 0.18);
  backdrop-filter: blur(18px);
}

.ps-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding-block: var(--space-4);
  gap: var(--space-6);
}

/* Brand */

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

.ps-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-text);
}

.ps-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: conic-gradient(from 180deg, rgba(60, 255, 107, 0.1), rgba(60, 255, 107, 0.7), rgba(60, 255, 107, 0.1));
  box-shadow: var(--shadow-glow-primary);
  position: relative;
}

.ps-header__logo-mark::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 4px;
  background: radial-gradient(circle at 30% 0, rgba(255, 255, 255, 0.35), transparent 55%),
              linear-gradient(145deg, #050608, #101218);
}

.ps-header__logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ps-header__logo-emphasis {
  color: var(--color-primary);
}

/* Navigation */

.ps-header__nav {
  display: none;
}

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

.ps-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.ps-header__nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -6px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transform: scaleX(0.3);
  transform-origin: center;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

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

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

.ps-header__nav-link--highlight {
  color: var(--color-primary);
}

.ps-header__nav-link--highlight::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Header actions */

.ps-header__actions {
  display: none;
}

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

/* Mobile toggle */

.ps-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(60, 255, 107, 0.5);
  background: rgba(10, 12, 18, 0.96);
  cursor: pointer;
}

.ps-header__toggle-bar {
  width: 60%;
  height: 2px;
  margin-inline: auto;
  border-radius: 999px;
  background-color: var(--color-primary);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
}

/* Mobile nav state */

.ps-header--menu-open {
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.95);
}

.ps-header--menu-open .ps-header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
  width: 70%;
}

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

.ps-header--menu-open .ps-header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
  width: 70%;
}

.ps-header__nav--open {
  display: block;
}

/* Mobile nav panel */

@media (max-width: 767.98px) {
  .ps-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: var(--color-bg-glass);
    border-bottom: 1px solid var(--color-border-subtle);
    backdrop-filter: blur(18px);
  }

  .ps-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6) var(--space-8) var(--space-8);
    gap: var(--space-4);
  }

  .ps-header__nav-link {
    width: 100%;
  }
}

/* Desktop layout */

@media (min-width: 768px) {
  .ps-header__toggle {
    display: none;
  }

  .ps-header__nav {
    display: block;
  }

  .ps-header__actions {
    display: flex;
  }

  .ps-header__inner {
    gap: var(--space-10);
  }
}

@media (min-width: 1024px) {
  .ps-header__nav-list {
    gap: var(--space-8);
  }
}