/* ============================================
   PHARMALINK B2B - HEADER STYLES
   ============================================ */

/* ---- Desktop Header ---- */
#desktop-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: var(--white);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
#desktop-header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.12);
}
#desktop-header.hidden-up {
  transform: translateY(-100%);
}

/* Top bar */
.header-topbar {
  background: var(--primary-dark);
  color: var(--white);
  padding: 6px 0;
  font-size: 0.8rem;
}
.header-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.topbar-left a, .topbar-right a {
  color: rgba(255,255,255,0.85);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 5px;
}
.topbar-left a:hover, .topbar-right a:hover { color: var(--white); }
.topbar-divider { width: 1px; height: 14px; background: rgba(255,255,255,0.2); }

/* Main header bar */
.header-main {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}
.header-main-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

/* Logo */
.logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), #00C988);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--white);
  flex-shrink: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.logo-tagline {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Search */
.header-search {
  flex: 1;
  max-width: 560px;
  position: relative;
}
.search-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-full);
  overflow: visible;
  transition: all var(--transition-fast);
}
.search-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0,123,94,0.10);
  background: var(--white);
}
.search-category-select {
  padding: 0 14px;
  height: 44px;
  border: none;
  border-right: 1.5px solid var(--border);
  background: transparent;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  border-radius: var(--radius-full) 0 0 var(--radius-full);
  min-width: 110px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23007B5E' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}
.search-input {
  flex: 1;
  padding: 0 var(--space-md);
  height: 44px;
  border: none;
  background: transparent;
  font-size: 0.95rem;
  color: var(--text-primary);
  min-width: 0;
}
.search-btn {
  padding: 6px 18px;
  height: 32px;
  margin-right: 6px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.search-btn:hover { opacity: 0.9; }

/* Search suggestions dropdown */
.search-suggestions {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  display: none;
  padding: var(--space-sm);
}
.search-suggestions.active { display: block; }
.suggestion-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background var(--transition-fast);
}
.suggestion-item:hover { background: var(--primary-light); }
.suggestion-item .icon { color: var(--text-muted); font-size: 0.85rem; }

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}
.header-action-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  color: var(--text-primary);
  cursor: pointer;
}
.header-action-btn:hover { background: var(--primary-light); color: var(--primary); }
.header-action-btn .icon { font-size: 1.2rem; line-height: 1; }
.header-action-btn .label { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.02em; }
.action-badge {
  position: absolute;
  top: 4px;
  right: 6px;
  background: var(--secondary);
  color: var(--white);
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Navigation bar */
.header-nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0;
  position: relative;
}
.header-nav-inner {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 14px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.nav-link .chevron { font-size: 0.7rem; transition: transform var(--transition-fast); }
.nav-item:hover .nav-link .chevron { transform: rotate(180deg); }

/* Mega menu */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 600px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  display: none;
  padding: var(--space-lg);
}
.nav-item:hover .mega-menu { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.mega-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1.5px solid var(--border);
}
.mega-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.mega-link:hover { background: var(--primary-light); color: var(--primary); padding-left: 14px; }
.mega-link .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--border-strong); transition: background var(--transition-fast); flex-shrink: 0; }
.mega-link:hover .dot { background: var(--primary); }

/* All categories button */
.all-cats-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 18px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  margin-right: var(--space-sm);
  cursor: pointer;
}
.all-cats-btn:hover { background: var(--primary-dark); }
.all-cats-btn .hamburger { display: flex; flex-direction: column; gap: 4px; }
.all-cats-btn .hamburger span { display: block; width: 16px; height: 2px; background: var(--white); border-radius: 1px; }

/* ---- Mobile Header ---- */
#mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height-mobile);
  background: var(--white);
  z-index: var(--z-header);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.mobile-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--space-md);
  gap: var(--space-sm);
}
.mobile-menu-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}
.mobile-menu-toggle:hover { background: var(--primary-light); color: var(--primary); }
.mobile-logo { flex: 1; display: flex; justify-content: center; }
.mobile-logo .logo-name { font-size: 1.1rem; }
.mobile-header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.mobile-icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.1rem;
  color: var(--text-primary);
  position: relative;
  transition: background var(--transition-fast);
}
.mobile-icon-btn:hover { background: var(--primary-light); color: var(--primary); }

/* Mobile search bar below header */
.mobile-search-bar {
  display: none;
  padding: 8px var(--space-md);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  z-index: calc(var(--z-header) - 1);
}
.mobile-search-bar.open { display: flex; }
.mobile-search-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  width: 100%;
  overflow: hidden;
}
.mobile-search-input-wrap input {
  flex: 1;
  padding: 10px 14px;
  border: none;
  background: transparent;
  font-size: 0.9rem;
}
.mobile-search-input-wrap button {
  padding: 10px 14px;
  color: var(--primary);
  font-size: 1rem;
}

/* ---- Drawer Sidebar (Mobile) ---- */
#mobile-sidebar {
  position: fixed;
  top: 0;
  left: -100%;
  width: min(320px, 90vw);
  height: 100vh;
  background: var(--white);
  z-index: calc(var(--z-overlay) + 10);
  transition: left var(--transition-base);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
#mobile-sidebar.open { left: 0; }
.mobile-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  flex-shrink: 0;
}
.mobile-sidebar-header .logo-name { color: var(--white); }
.mobile-sidebar-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  color: var(--white);
  font-size: 1.1rem;
}
.mobile-sidebar-user {
  padding: var(--space-md) var(--space-lg);
  background: var(--primary-light);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.mobile-sidebar-user .avatar {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
}
.mobile-sidebar-menu { flex: 1; padding: var(--space-sm) 0; }
.sidebar-nav-section {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}
.sidebar-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px var(--space-lg);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}
.sidebar-nav-item:hover { background: var(--primary-light); color: var(--primary); padding-left: calc(var(--space-lg) + 4px); }
.sidebar-nav-item .left { display: flex; align-items: center; gap: var(--space-md); }
.sidebar-nav-item .icon { width: 20px; text-align: center; color: var(--primary); }
.sidebar-nav-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.sidebar-cat-submenu {
  background: var(--bg);
  display: none;
}
.sidebar-cat-submenu.open { display: block; }
.sidebar-subitem {
  padding: 10px var(--space-lg) 10px calc(var(--space-lg) + 36px);
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}
.sidebar-subitem:hover { border-left-color: var(--primary); color: var(--primary); }