/* Header-specific styles for RISKY GAME / Astro Pulse */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 19, 0.92), rgba(5, 7, 19, 0.7));
  border-bottom: 1px solid rgba(51, 65, 85, 0.9);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-family: var(--font-heading);
}

.site-header__logo {
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid rgba(129, 140, 248, 0.8);
  background: radial-gradient(circle at 30% 0, rgba(129, 140, 248, 0.8), transparent 55%),
    radial-gradient(circle at 70% 100%, rgba(236, 72, 153, 0.7), transparent 55%),
    #020617;
  box-shadow: var(--shadow-glow-primary);
  overflow: hidden;
}

.site-header__logo-orbit {
  position: absolute;
  inset: 0.25rem;
  border-radius: inherit;
  border: 1px dashed rgba(191, 219, 254, 0.8);
  opacity: 0.8;
}

.site-header__logo-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 999px;
  background: #e5e7eb;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 14px rgba(248, 250, 252, 0.95);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-header__brand-title {
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-header__brand-subtitle {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

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

.site-header__nav-wrapper {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.site-header__nav-link {
  position: relative;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base);
}

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

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after,
.site-header__nav-link--active::after {
  width: 100%;
}

.site-header__nav-item--cta {
  margin-left: var(--space-3);
}

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

.site-header__cta-icon {
  display: inline-flex;
}

.site-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
}

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

.site-header__toggle-icon {
  position: relative;
  width: 1.5rem;
  height: 1.1rem;
}

.site-header__toggle-icon span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.site-header__toggle-icon span:first-child {
  top: 0;
}

.site-header__toggle-icon span:last-child {
  bottom: 0;
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon span:first-child {
  top: 0.45rem;
  transform: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon span:last-child {
  bottom: 0.45rem;
  transform: rotate(-45deg);
}

/* Mobile nav behaviour */

@media (max-width: 900px) {
  .site-header__inner {
    min-height: 4rem;
  }

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

  .site-header__nav-wrapper {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at 0 0, rgba(129, 140, 248, 0.18), transparent 55%),
      rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(51, 65, 85, 0.85);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .site-header__nav-wrapper.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
    padding: 20px;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-5);
    gap: var(--space-3);
  }

  .site-header__nav-item--cta {
    margin-left: 0;
    margin-top: var(--space-2);
    width: 100%;
  }

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

@media (max-width: 520px) {
  .site-header__brand-subtitle {
    display: none;
  }
}