/* Material Design 3 B2B Header Styles */

/* 
=== COLOR SCHEME OPTIONS ===
Copy and paste any of these color schemes to replace the active colors below:

OPTION 1: Professional Travel Theme (Deep Teal & Gold) - CURRENTLY ACTIVE
  --md-sys-color-primary: #0d9488;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ccfbf1;
  --md-sys-color-on-primary-container: #134e4a;
  --md-sys-color-secondary: #f59e0b;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #fef3c7;
  --md-sys-color-on-secondary-container: #92400e;

OPTION 2: Ocean Blue Theme
  --md-sys-color-primary: #0ea5e9;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #e0f2fe;
  --md-sys-color-on-primary-container: #0c4a6e;
  --md-sys-color-secondary: #06b6d4;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #cffafe;
  --md-sys-color-on-secondary-container: #164e63;

OPTION 3: Purple & Pink Theme
  --md-sys-color-primary: #8b5cf6;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #f3e8ff;
  --md-sys-color-on-primary-container: #581c87;
  --md-sys-color-secondary: #ec4899;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #fce7f3;
  --md-sys-color-on-secondary-container: #831843;

OPTION 4: Forest Green Theme
  --md-sys-color-primary: #059669;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d1fae5;
  --md-sys-color-on-primary-container: #065f46;
  --md-sys-color-secondary: #84cc16;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #ecfccb;
  --md-sys-color-on-secondary-container: #365314;

OPTION 5: Elegant Dark Theme
  --md-sys-color-primary: #4f46e5;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #e0e7ff;
  --md-sys-color-on-primary-container: #312e81;
  --md-sys-color-secondary: #1f2937;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #f9fafb;
  --md-sys-color-on-secondary-container: #111827;

OPTION 6: Warm Orange Theme
  --md-sys-color-primary: #ea580c;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #fed7aa;
  --md-sys-color-on-primary-container: #9a3412;
  --md-sys-color-secondary: #dc2626;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #fecaca;
  --md-sys-color-on-secondary-container: #991b1b;

=== ICON COLOR SYSTEM ===
Icons are automatically colored based on their function:
🔹 Flight icons: Blue (Info)
🔹 Hotel icons: Green (Success) 
🔹 Booking icons: Gold (Secondary)
🔹 Customer icons: Purple (Tertiary)
🔹 Report icons: Orange (Warning)
🔹 Active items: Teal (Primary)
🔹 Neutral items: Gray (Neutral)
🔹 Phone support: Green with pulse animation
🔹 Logout: Red (Error)
🔹 Close buttons: Red with rotation on hover
*/

:root {
  /* Material Design 3 Color Tokens - Professional Travel Theme */
  /* Option 1: Deep Teal & Gold (Current Active) */
  --md-sys-color-primary: #0d9488;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ccfbf1;
  --md-sys-color-on-primary-container: #134e4a;
  --md-sys-color-secondary: #f59e0b;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #fef3c7;
  --md-sys-color-on-secondary-container: #92400e;
  --md-sys-color-tertiary: #7c3aed;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #ede9fe;
  --md-sys-color-on-tertiary-container: #581c87;
  --md-sys-color-surface: #fefefe;
  --md-sys-color-on-surface: #1a1a1a;
  --md-sys-color-surface-variant: #f4f4f5;
  --md-sys-color-on-surface-variant: #44403c;
  --md-sys-color-outline: #d4d4d8;
  --md-sys-color-outline-variant: #e4e4e7;
  --md-sys-color-error: #dc2626;
  --md-sys-color-on-error: #ffffff;
  
  /* Icon Color Customizations */
  --md-icon-color-primary: #0d9488;        /* Teal for primary actions */
  --md-icon-color-secondary: #f59e0b;      /* Gold for secondary actions */
  --md-icon-color-tertiary: #7c3aed;       /* Purple for special items */
  --md-icon-color-success: #059669;        /* Green for positive actions */
  --md-icon-color-warning: #d97706;        /* Orange for warnings */
  --md-icon-color-info: #0ea5e9;           /* Blue for information */
  --md-icon-color-neutral: #64748b;        /* Gray for neutral items */
  
  /* Material Design 3 Typography Scale */
  --md-sys-typescale-headline-large-font: 'Roboto';
  --md-sys-typescale-headline-large-size: 2rem;
  --md-sys-typescale-headline-large-weight: 400;
  --md-sys-typescale-headline-large-line-height: 2.5rem;
  
  --md-sys-typescale-title-large-font: 'Roboto';
  --md-sys-typescale-title-large-size: 1.375rem;
  --md-sys-typescale-title-large-weight: 400;
  --md-sys-typescale-title-large-line-height: 1.75rem;
  
  --md-sys-typescale-title-medium-font: 'Roboto';
  --md-sys-typescale-title-medium-size: 1rem;
  --md-sys-typescale-title-medium-weight: 500;
  --md-sys-typescale-title-medium-line-height: 1.5rem;
  
  --md-sys-typescale-label-large-font: 'Roboto';
  --md-sys-typescale-label-large-size: 0.875rem;
  --md-sys-typescale-label-large-weight: 500;
  --md-sys-typescale-label-large-line-height: 1.25rem;
  
  --md-sys-typescale-body-large-font: 'Roboto';
  --md-sys-typescale-body-large-size: 1rem;
  --md-sys-typescale-body-large-weight: 400;
  --md-sys-typescale-body-large-line-height: 1.5rem;
  
  /* Material Design 3 Elevation */
  --md-sys-elevation-level0: none;
  --md-sys-elevation-level1: 0px 1px 3px 1px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
  --md-sys-elevation-level2: 0px 2px 6px 2px rgba(0, 0, 0, 0.15), 0px 1px 2px 0px rgba(0, 0, 0, 0.30);
  --md-sys-elevation-level3: 0px 4px 8px 3px rgba(0, 0, 0, 0.15), 0px 1px 3px 0px rgba(0, 0, 0, 0.30);
  --md-sys-elevation-level4: 0px 6px 10px 4px rgba(0, 0, 0, 0.15), 0px 2px 3px 0px rgba(0, 0, 0, 0.30);
  --md-sys-elevation-level5: 0px 8px 12px 6px rgba(0, 0, 0, 0.15), 0px 4px 4px 0px rgba(0, 0, 0, 0.30);
  
  /* Material Design 3 Motion */
  --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0.0, 0, 1.0);
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0.0, 0, 1.0);
  --md-sys-motion-duration-short2: 100ms;
  --md-sys-motion-duration-short3: 150ms;
  --md-sys-motion-duration-short4: 200ms;
  --md-sys-motion-duration-medium1: 250ms;
  --md-sys-motion-duration-medium2: 300ms;
}

/* Material Design 3 B2B Header Styles */
.md3-b2b-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  box-shadow: var(--md-sys-elevation-level2);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--md-sys-typescale-body-large-font);
}

/* Header Logo */
.md3-header-logo {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  height: 100%;
}

.md3-header-logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-header-logo img {
  height: 40px;
  width: auto;
  border-radius: 8px;
  transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-header-logo a:hover img {
  transform: scale(1.05);
}

/* Navigation */
.md3-header-nav {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 4px;
  margin-right: 16px;
}

.md3-nav-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  min-height: 44px;
  border-radius: 20px;
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-label-large-font);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  line-height: var(--md-sys-typescale-label-large-line-height);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  position: relative;
  gap: 8px;
  /* Accessibility improvements */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.md3-nav-item:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  text-decoration: none;
}

.md3-nav-item.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.md3-nav-item .material-symbols-outlined {
  font-size: 20px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
  color: var(--md-icon-color-neutral);
  transition: color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-nav-item.active .material-symbols-outlined {
  font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 20;
  color: var(--md-icon-color-primary);
}

/* Specific Icon Colors by Function */
.md3-nav-item[href*="flight"] .material-symbols-outlined,
.md3-nav-item[onclick*="flight"] .material-symbols-outlined {
  color: var(--md-icon-color-info);
}

.md3-nav-item[href*="hotel"] .material-symbols-outlined,
.md3-nav-item[onclick*="hotel"] .material-symbols-outlined {
  color: var(--md-icon-color-success);
}

.md3-nav-item[href*="booking"] .material-symbols-outlined,
.md3-nav-item[onclick*="booking"] .material-symbols-outlined {
  color: var(--md-icon-color-secondary);
}

.md3-nav-item[href*="customer"] .material-symbols-outlined,
.md3-nav-item[onclick*="customer"] .material-symbols-outlined {
  color: var(--md-icon-color-tertiary);
}

.md3-nav-item[href*="report"] .material-symbols-outlined,
.md3-nav-item[onclick*="report"] .material-symbols-outlined {
  color: var(--md-icon-color-warning);
}

.md3-nav-item:hover .material-symbols-outlined {
  color: var(--md-icon-color-primary);
  transform: scale(1.1);
}

/* Wallet Balance Special Styling */
.md3-nav-item.wallet-balance {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  font-weight: 600;
}

.md3-nav-item.wallet-balance:hover {
  background-color: var(--md-sys-color-tertiary);
  color: var(--md-sys-color-on-tertiary);
}

/* Dropdown Navigation */
.md3-nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}

.md3-nav-dropdown .md3-nav-item {
  position: relative;
}

.md3-nav-dropdown .dropdown-chevron {
  margin-left: 4px;
  transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  font-size: 16px;
}

.md3-nav-dropdown.show .dropdown-chevron {
  transform: rotate(180deg);
}

.md3-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 280px;
  background: var(--md-sys-color-surface);
  border-radius: 12px;
  box-shadow: var(--md-sys-elevation-level3);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized);
  z-index: 1001;
}

.md3-nav-dropdown.show .md3-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.md3-dropdown-header {
  padding: 12px 16px 8px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  margin-bottom: 8px;
}

.md3-dropdown-header strong {
  font-family: var(--md-sys-typescale-title-medium-font);
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: var(--md-sys-typescale-title-medium-weight);
  color: var(--md-sys-color-on-surface-variant);
}

.md3-dropdown-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  min-height: 44px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-body-large-font);
  font-size: var(--md-sys-typescale-body-large-size);
  font-weight: var(--md-sys-typescale-body-large-weight);
  line-height: var(--md-sys-typescale-body-large-line-height);
  gap: 12px;
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  margin-bottom: 2px;
  /* Accessibility improvements */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.md3-dropdown-item:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  text-decoration: none;
}

.md3-dropdown-item.logout-item {
  color: var(--md-sys-color-error);
  margin-top: 8px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding-top: 12px;
}

.md3-dropdown-item.logout-item:hover {
  background-color: rgba(220, 38, 38, 0.08);
  color: var(--md-sys-color-error);
}

.md3-dropdown-item .material-symbols-outlined {
  font-size: 20px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
  color: var(--md-icon-color-neutral);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

/* Dropdown Icon Colors by Type */
.md3-dropdown-item[href*="profile"] .material-symbols-outlined {
  color: var(--md-icon-color-tertiary);
}

.md3-dropdown-item[href*="setting"] .material-symbols-outlined {
  color: var(--md-icon-color-info);
}

.md3-dropdown-item[href*="help"] .material-symbols-outlined,
.md3-dropdown-item[href*="support"] .material-symbols-outlined {
  color: var(--md-icon-color-success);
}

.md3-dropdown-item.logout-item .material-symbols-outlined {
  color: var(--md-sys-color-error);
}

.md3-dropdown-item:hover .material-symbols-outlined {
  transform: scale(1.1);
}

/* Mobile Navigation Toggle - Enhanced OnePlus Compatibility & Accessibility */
.md3-mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 12px;
  border-radius: 20px;
  color: var(--md-sys-color-on-surface);
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  margin-left: 16px;
  /* Enhanced mobile compatibility */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  /* Accessibility - Minimum 44px touch target */
  min-width: 44px;
  min-height: 44px;
  position: relative;
  z-index: 1000;
  /* Ensure it's clickable */
  pointer-events: auto;
  /* Additional accessibility improvements */
  display: flex;
  align-items: center;
  justify-content: center;
  /* Better visual feedback */
  will-change: transform, background-color;
}

.md3-mobile-nav-toggle:hover,
.md3-mobile-nav-toggle:focus {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  outline: none;
}

.md3-mobile-nav-toggle:active {
  transform: scale(0.95);
  background-color: var(--md-sys-color-primary-container);
}

.md3-mobile-nav-toggle:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.md3-mobile-nav-toggle .material-symbols-outlined {
  font-size: 24px;
  color: var(--md-icon-color-primary);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-mobile-nav-toggle:hover .material-symbols-outlined {
  color: var(--md-icon-color-secondary);
  transform: rotate(90deg);
}

/* Mobile Overlay - Enhanced Compatibility */
.md3-mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.32);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-standard);
  pointer-events: none;
  /* Enhanced mobile compatibility */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  /* Force hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: opacity, visibility;
}

.md3-mobile-menu-overlay.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Mobile Navigation - Enhanced Compatibility */
.md3-mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(360px, 80vw);
  height: 100vh;
  background: var(--md-sys-color-surface);
  box-shadow: var(--md-sys-elevation-level4);
  z-index: 1000;
  transition: right var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
  display: flex;
  flex-direction: column;
  /* Enhanced mobile compatibility */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  /* Force hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: right, transform;
  /* Handle potential iOS issues */
  -webkit-overflow-scrolling: touch;
  overflow-y: auto;
}

.md3-mobile-nav.show {
  right: 0;
  transform: translateX(0);
  -webkit-transform: translateX(0);
}

.md3-mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  background: var(--md-sys-color-primary-container);
}

.md3-mobile-nav-header h3 {
  font-family: var(--md-sys-typescale-title-large-font);
  font-size: var(--md-sys-typescale-title-large-size);
  font-weight: var(--md-sys-typescale-title-large-weight);
  color: var(--md-sys-color-on-primary-container);
  margin: 0;
}

.md3-mobile-nav-close {
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-primary-container);
  padding: 8px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-mobile-nav-close:hover {
  background-color: rgba(30, 64, 175, 0.08);
}

.md3-mobile-nav-close .material-symbols-outlined {
  font-size: 24px;
  color: var(--md-sys-color-error);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

.md3-mobile-nav-close:hover .material-symbols-outlined {
  transform: rotate(90deg);
  color: var(--md-sys-color-error);
}

.md3-mobile-nav-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.md3-mobile-nav-item {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-body-large-font);
  font-size: var(--md-sys-typescale-body-large-size);
  font-weight: var(--md-sys-typescale-body-large-weight);
  line-height: var(--md-sys-typescale-body-large-line-height);
  gap: 16px;
  margin-bottom: 4px;
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  /* Accessibility - Minimum 44px touch target */
  min-height: 44px;
  /* Enhanced touch compatibility */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.md3-mobile-nav-item:hover {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  text-decoration: none;
}

.md3-mobile-nav-item.wallet-item {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  font-weight: 600;
  margin-bottom: 16px;
}

.md3-mobile-nav-item.logout-item {
  color: var(--md-sys-color-error);
  margin-top: 16px;
}

.md3-mobile-nav-item.logout-item:hover {
  background-color: rgba(220, 38, 38, 0.08);
  color: var(--md-sys-color-error);
}

.md3-mobile-nav-item .material-symbols-outlined {
  font-size: 24px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  color: var(--md-icon-color-neutral);
  transition: all var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}

/* Mobile Nav Icon Colors by Function */
.md3-mobile-nav-item[href*="flight"] .material-symbols-outlined {
  color: var(--md-icon-color-info);
}

.md3-mobile-nav-item[href*="hotel"] .material-symbols-outlined {
  color: var(--md-icon-color-success);
}

.md3-mobile-nav-item[href*="booking"] .material-symbols-outlined {
  color: var(--md-icon-color-secondary);
}

.md3-mobile-nav-item[href*="customer"] .material-symbols-outlined {
  color: var(--md-icon-color-tertiary);
}

.md3-mobile-nav-item[href*="report"] .material-symbols-outlined {
  color: var(--md-icon-color-warning);
}

.md3-mobile-nav-item.wallet-item .material-symbols-outlined {
  color: var(--md-icon-color-tertiary);
}

.md3-mobile-nav-item.logout-item .material-symbols-outlined {
  color: var(--md-sys-color-error);
}

.md3-mobile-nav-item:hover .material-symbols-outlined {
  color: var(--md-icon-color-primary);
  transform: scale(1.2);
}

.md3-mobile-nav-section {
  margin: 16px 0;
}

.md3-mobile-nav-title {
  padding: 8px 20px 12px;
  font-family: var(--md-sys-typescale-title-medium-font);
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: var(--md-sys-typescale-title-medium-weight);
  color: var(--md-sys-color-on-surface-variant);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  margin-bottom: 8px;
}

/* Support Info */
.md3-header-support-info {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--md-sys-color-primary-container);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 998;
  box-shadow: var(--md-sys-elevation-level1);
}

.md3-support-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--md-sys-color-on-primary-container);
  font-family: var(--md-sys-typescale-label-large-font);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
}

.md3-support-phone .material-symbols-outlined {
  font-size: 18px;
  font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 18;
  color: var(--md-icon-color-success);
  animation: pulse 2s infinite;
}

/* Phone icon pulse animation */
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* ===========================
   RESPONSIVE DESIGN - CONSOLIDATED & OPTIMIZED
   =========================== */

/* Desktop and large tablets */
@media (min-width: 769px) {
  .md3-mobile-nav-toggle {
    display: none !important;
  }
  
  .md3-header-nav {
    display: flex !important;
  }
  
  .md3-mobile-nav,
  .md3-mobile-menu-overlay {
    display: none !important;
  }
}

/* Tablets and mobile */
@media (max-width: 768px) {
  .md3-header-nav {
    display: none !important;
  }
  
  .md3-mobile-nav-toggle {
    display: flex !important;
    min-width: 48px;
    min-height: 48px;
  }
  
  .md3-b2b-header {
    padding: 0 8px;
  }
  
  .md3-header-logo {
    padding: 8px;
  }
}

/* Small mobile screens */
@media (max-width: 480px) {
  .md3-mobile-nav {
    width: 100vw;
  }
  
  .md3-mobile-nav-toggle {
    padding: 12px;
  }
  
  .md3-header-logo img {
    height: 32px;
  }
  
  .md3-b2b-header {
    padding: 0 4px;
  }
}

/* Touch devices - force mobile navigation */
@media (hover: none) and (pointer: coarse) {
  .md3-header-nav {
    display: none !important;
  }
  
  .md3-mobile-nav-toggle {
    display: flex !important;
    touch-action: manipulation;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
}

/* Clean responsive design completed */
/* Animation Enhancements */
@keyframes md3-fadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes md3-slideIn {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

.md3-dropdown-menu {
  animation: md3-fadeIn var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized);
}

.md3-mobile-nav.show {
  animation: md3-slideIn var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized);
}

/* Focus States for Accessibility */
.md3-nav-item:focus-visible,
.md3-dropdown-item:focus-visible,
.md3-mobile-nav-item:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .md3-b2b-header {
    border-bottom: 2px solid var(--md-sys-color-outline);
  }
  
  .md3-nav-item,
  .md3-dropdown-item {
    border: 1px solid transparent;
  }
  
  .md3-nav-item:hover,
  .md3-dropdown-item:hover {
    border-color: var(--md-sys-color-outline);
  }
}