/* FitZoone header styles */

.fz-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: radial-gradient(circle at top left, rgba(16, 24, 51, 0.92) 0, rgba(5, 8, 20, 0.96) 52%, rgba(2, 3, 10, 0.98) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

/* Brand */

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

.fz-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.fz-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 30% 0, var(--color-primary) 0, var(--color-accent) 60%, #050814 100%);
  box-shadow: var(--shadow-glow-primary);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

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

/* Navigation */

.fz-header__nav {
  margin-left: auto;
}

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

.fz-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: none;
}

.fz-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-base);
}

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

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

.fz-header__nav-item--cta {
  margin-left: var(--space-2);
}

.fz-header__nav-link--cta {
  padding-inline: var(--space-4);
  padding-block: 0.55rem;
  font-size: var(--font-size-xs);
}

/* Mobile menu toggle */

.fz-header__toggle {
  position: relative;
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--gray-300);
  background-color: rgba(11, 15, 28, 0.9);
  color: var(--color-text);
}

.fz-header__toggle-bar {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-fast), top var(--transition-base), bottom var(--transition-base);
}

.fz-header__toggle-bar:nth-child(1) {
  top: -4px;
}

.fz-header__toggle-bar:nth-child(3) {
  bottom: -4px;
}

.fz-header__toggle[aria-expanded="true"] .fz-header__toggle-bar:nth-child(1) {
  transform: translateY(12px) rotate(45deg);
}

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

.fz-header__toggle[aria-expanded="true"] .fz-header__toggle-bar:nth-child(3) {
  transform: translateY(-12px) rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 768px) {
  .fz-header__inner {
    padding-block: var(--space-2);
  }

  .fz-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .fz-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 64px;
    background: radial-gradient(circle at top left, rgba(16, 24, 51, 0.98) 0, rgba(5, 8, 20, 0.99) 52%, rgba(2, 3, 10, 1) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

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

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

  .fz-header__nav-item--cta {
    width: 100%;
    margin-left: 0;
  }

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

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

/* Larger screens adjustments */

@media (min-width: 769px) {
  .fz-header__nav {
    position: static;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: none !important;
  }
}

/* Focus styles refinement */

.fz-header__toggle:focus-visible,
.fz-header__logo:focus-visible,
.fz-header__nav-link:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: 3px;
  border-radius: var(--radius-full);
}