/* Header styles for Fenyd Deck - builds on base.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 5, 9, 0.98), rgba(5, 5, 9, 0.92));
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-6);
  gap: var(--space-8);
}

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

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.site-header__logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 0%, var(--color-accent), transparent 55%),
    radial-gradient(circle at 80% 120%, var(--color-primary-soft), transparent 55%),
    #020308;
  box-shadow: var(--glow-primary);
  position: relative;
}

.site-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 22%;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.4);
}

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

/* Primary navigation */
.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.site-header__nav-link {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-muted);
  padding-block: var(--space-2);
}

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

/* Mobile toggle */
.site-header__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  color: var(--color-text);
}

.site-header__toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-neutral-200);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

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

/* Toggle open state animation */
.site-header__toggle--open .site-header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.site-header__toggle--open .site-header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Responsive behavior */
@media (max-width: 900px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 56px;
    background: radial-gradient(circle at top left, rgba(16, 124, 16, 0.32), transparent 55%),
      rgba(5, 5, 9, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal),
      visibility var(--transition-normal);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-10) var(--space-8) var(--space-12);
  }

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

  .site-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 480px) {
  .site-header__inner {
    padding-block: var(--space-4);
  }

  .site-header__logo-text {
    font-size: var(--font-size-xs);
  }
}