/* Header Styles - Flora Pulse Hub */

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--space-2) var(--space-4);
  z-index: 10000;
  transition: top var(--transition-fast);
  font-weight: 500;
  border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-surface);
  outline-offset: -2px;
}

/* Header Layout */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-neutral-200);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: var(--space-4);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.8;
}

.logo__icon {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.logo__text {
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

.nav-menu a {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.nav-menu a:hover,
.nav-menu a:focus {
  color: var(--color-primary);
}

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

/* Utilities */
.header-utilities {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.utility-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  text-decoration: none;
}

.utility-btn:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.utility-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.cart-btn .cart-count {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  margin-left: calc(-1 * var(--space-2));
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

/* Mobile Menu Open State */
.mobile-menu-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    border-top: 1px solid var(--color-neutral-200);
    box-shadow: var(--shadow-lg);
    
    /* Hidden by default */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    pointer-events: none;
  }
  
  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: all;
  }
  
  .nav-menu a {
    font-size: var(--font-size-lg);
    padding: var(--space-3) 0;
    display: block;
  }
  
  .nav-menu a::after {
    display: none;
  }
  
  .header-container {
    height: 72px;
  }
  
  .logo__text {
    font-size: var(--font-size-xl);
  }
}

/* Prevent body scroll when menu open */
body.menu-open {
  overflow: hidden;
}