/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-4) 0;
  transition: padding var(--transition-base), background-color var(--transition-base);
}

.site-header.scrolled {
  padding: var(--space-3) 0;
  background-color: rgba(5, 5, 5, 0.95);
  border-bottom: 1px solid var(--color-primary);
  box-shadow: 0 4px 20px rgba(0, 243, 255, 0.1);
}

/* Brand */
.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-text {
  font-family: var(--font-mono);
  font-size: var(--size-text-xl);
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--color-text-heading);
}

.text-primary {
  color: var(--color-primary);
}

/* Desktop Nav */
.desktop-nav {
  display: none;
}

@media (min-width: 992px) {
  .desktop-nav {
    display: block;
  }
}

.nav-list {
  list-style: none;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-text-muted);
  font-size: var(--size-text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  position: relative;
  padding: var(--space-2) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
  box-shadow: 0 0 8px var(--color-primary);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-text-heading);
}

.nav-link:hover::after,
.nav-link:focus::after {
  width: 100%;
}

/* Actions */
.header-actions {
  gap: var(--space-3);
}

.icon-btn {
  background: none;
  border: none;
  color: var(--color-text-main);
  font-size: var(--size-text-lg);
  cursor: pointer;
  padding: var(--space-2);
  position: relative;
  transition: color var(--transition-fast);
}

.icon-btn:hover {
  color: var(--color-primary);
  text-shadow: 0 0 8px rgba(0, 243, 255, 0.5);
}

.cart-count {
  position: absolute;
  top: 0;
  right: 0;
  background-color: var(--color-primary);
  color: #000;
  font-size: 0.65rem;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* Mobile Toggle */
.mobile-toggle {
  display: flex;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-heading);
  z-index: 1002;
}

@media (min-width: 992px) {
  .mobile-toggle {
    display: none;
  }
}

.hamburger-box {
  width: 24px;
  height: 20px;
  position: relative;
}

.hamburger-inner {
  display: block;
  top: 50%;
  margin-top: -1px;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: absolute;
  transition: transform var(--transition-fast);
}

.hamburger-inner::before,
.hamburger-inner::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: absolute;
  transition: transform var(--transition-fast);
}

.hamburger-inner::before {
  top: -8px;
}

.hamburger-inner::after {
  bottom: -8px;
}

/* Mobile Menu Open State - Toggle Animation */
.mobile-toggle[aria-expanded="true"] .hamburger-inner {
  transform: rotate(45deg);
}

.mobile-toggle[aria-expanded="true"] .hamburger-inner::before {
  top: 0;
  opacity: 0;
}

.mobile-toggle[aria-expanded="true"] .hamburger-inner::after {
  bottom: 0;
  transform: rotate(-90deg);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-bg);
  z-index: 1001;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
  padding: var(--space-16) var(--space-4) var(--space-4);
}

.mobile-menu-overlay.is-active {
  transform: translateX(0);
}

.mobile-nav-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  font-size: var(--size-text-xl);
  font-weight: 700;
  color: var(--color-text-heading);
  text-transform: uppercase;
  display: block;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
  padding-left: var(--space-2);
  border-bottom-color: var(--color-primary);
}

.mobile-actions {
  margin-top: auto;
  padding-top: var(--space-6);
}

.w-100 {
  width: 100%;
}