/* Header styles for VtalsGamePL */

.vg-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: radial-gradient(circle at top left, rgba(64, 224, 255, 0.12), transparent 60%),
              radial-gradient(circle at bottom right, rgba(255, 51, 92, 0.12), transparent 60%),
              rgba(5, 6, 10, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.vg-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

/* Brand / logo */
.vg-header__brand {
  display: flex;
  align-items: center;
}

.vg-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: "Russo One", system-ui, -apple-system, BlinkMacSystemFont, "Inter", "Roboto", "Segoe UI", sans-serif;
  font-size: var(--font-size-lg);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
}

.vg-header__logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 30% 70% 55% 45%;
  background: radial-gradient(circle at 30% 20%, var(--color-primary), transparent 60%),
              radial-gradient(circle at 70% 80%, var(--color-danger), transparent 60%),
              #05060a;
  box-shadow: 0 0 16px rgba(64, 224, 255, 0.8);
}

.vg-header__logo-text {
  white-space: nowrap;
}

/* Navigation */
.vg-header__nav {
  display: flex;
  align-items: center;
}

.vg-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.vg-header__nav-item--highlight {
  margin-left: var(--space-2);
}

.vg-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: var(--space-1);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

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

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

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

.vg-header__nav-link--cta {
  padding-inline: var(--space-3);
  padding-block: calc(var(--space-1) + 1px);
  border-radius: var(--radius-full);
  border: 1px solid rgba(64, 224, 255, 0.6);
  background: radial-gradient(circle at top left, rgba(64, 224, 255, 0.22), transparent 60%),
              radial-gradient(circle at bottom right, rgba(255, 51, 92, 0.22), transparent 60%),
              rgba(9, 11, 20, 0.9);
  box-shadow: 0 0 0 1px rgba(64, 224, 255, 0.25);
}

.vg-header__nav-link--cta::after {
  display: none;
}

.vg-header__nav-link--cta:hover,
.vg-header__nav-link--cta:focus-visible {
  border-color: rgba(64, 224, 255, 0.9);
  box-shadow: var(--shadow-neon-cyan);
}

/* Mobile toggle */
.vg-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding-inline: var(--space-3);
  padding-block: var(--space-2);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(5, 6, 10, 0.85);
  color: var(--color-text-soft);
}

.vg-header__toggle:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 3px;
}

.vg-header__toggle-icon {
  position: relative;
  width: 20px;
  height: 14px;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
}

.vg-header__toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text-soft);
  transition: transform var(--transition-normal), opacity var(--transition-normal), background var(--transition-normal);
}

.vg-header__toggle[aria-expanded="true"] .vg-header__toggle-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.vg-header__toggle[aria-expanded="true"] .vg-header__toggle-icon span:nth-child(2) {
  opacity: 0;
}

.vg-header__toggle[aria-expanded="true"] .vg-header__toggle-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.vg-header__toggle-text {
  font-size: var(--font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Responsive behavior */
@media (max-width: 900px) {
  .vg-header__inner {
    padding-block: var(--space-2);
  }

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

  .vg-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(64, 224, 255, 0.12), transparent 55%),
                rgba(5, 6, 10, 0.97);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  }

  .vg-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4) var(--space-4);
  }

  .vg-header__nav-item--highlight {
    margin-left: 0;
    margin-top: var(--space-2);
  }

  .vg-header__nav-link {
    width: 100%;
    padding-block: var(--space-2);
  }

  .vg-header__nav-link--cta {
    width: 100%;
    justify-content: center;
  }

  .vg-header--menu-open .vg-header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .vg-header__nav,
  .vg-header__toggle-icon span {
    transition: none;
  }
}