/* 
  Header Styles
  Inherits variables from base.css
*/

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg-body);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
}

.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

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

/* Brand */
.brand-logo {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.brand-logo:hover {
  color: var(--color-primary-hover);
}

/* Desktop Nav */
.nav-desktop {
  display: none;
  flex: 1;
  justify-content: center;
}

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

.nav-link {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
  position: relative;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Actions */
.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-4);
}

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

.action-btn:hover {
  color: var(--color-primary);
}

.action-btn i {
  display: block;
}

.cart-btn {
  position: relative;
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  height: 18px;
  width: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Toggle */
.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-main);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--transition-fast);
}

.mobile-toggle:hover {
  color: var(--color-primary);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-container {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 85%;
  max-width: 320px;
  background-color: var(--color-bg-body);
  padding: var(--space-5);
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

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

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.brand-logo-mobile {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
}

.mobile-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-main);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--transition-fast);
}

.mobile-close:hover {
  color: var(--color-primary);
}

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-8) 0;
}

.mobile-nav-link {
  display: block;
  font-family: var(--font-family-serif);
  font-size: var(--font-size-xl);
  color: var(--color-text-main);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

.nav-mobile {
  flex: 1;
}

.mobile-actions {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.mobile-account-btn {
  width: 100%;
  display: block;
  text-align: center;
}

/* Media Queries */
@media (min-width: 768px) {
  .header-inner {
    height: 90px;
  }

  .brand-logo {
    margin-right: var(--space-8);
  }
}

@media (min-width: 992px) {
  .mobile-toggle {
    display: none;
  }
  
  .nav-desktop {
    display: flex;
  }
  
  .mobile-menu-overlay {
    display: none;
  }

  .header-actions {
    margin-left: auto;
  }
}