/* Enhanced Military Design System - Community Packing List */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* CSS Custom Properties - Enhanced Design Tokens */
:root {
  /* Color Palette - Military Inspired */
  --color-military-olive: hsl(74, 44%, 22%);
  --color-military-navy: hsl(214, 55%, 24%);
  --color-military-khaki: hsl(37, 28%, 67%);
  --color-military-sand: hsl(54, 67%, 91%);
  --color-military-dark: hsl(0, 0%, 17%);
  
  /* Semantic Colors */
  --color-primary: var(--color-military-navy);
  --color-secondary: var(--color-military-olive);
  --color-accent: var(--color-military-khaki);
  --color-background: var(--color-military-sand);
  
  /* Status Colors */
  --color-success: hsl(134, 61%, 41%);
  --color-warning: hsl(45, 100%, 51%);
  --color-danger: hsl(354, 70%, 54%);
  --color-info: hsl(201, 79%, 46%);
  
  /* Neutral Colors */
  --color-white: hsl(0, 0%, 100%);
  --color-gray-50: hsl(210, 20%, 98%);
  --color-gray-100: hsl(220, 14%, 96%);
  --color-gray-200: hsl(220, 13%, 91%);
  --color-gray-300: hsl(216, 12%, 84%);
  --color-gray-400: hsl(218, 11%, 65%);
  --color-gray-500: hsl(220, 9%, 46%);
  --color-gray-600: hsl(215, 14%, 34%);
  --color-gray-700: hsl(217, 19%, 27%);
  --color-gray-800: hsl(215, 28%, 17%);
  --color-gray-900: hsl(221, 39%, 11%);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-family-mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-slower: 500ms ease;
}

/* CSS Reset & Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-gray-50) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Focus Management */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

/* Layout Components */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-4);
}

.main-content {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-6);
  min-height: calc(100vh - 200px);
}

.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  text-align: center;
  padding: var(--space-8) var(--space-4);
  margin-top: auto;
  border-top: 3px solid var(--color-secondary);
}

.footer__container {
  max-width: 1400px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .container { padding: var(--space-6); }
  .main-content { padding: var(--space-8); }
}

@media (min-width: 768px) {
  .container { padding: var(--space-8); }
  .main-content { padding: var(--space-10); }
}

@media (min-width: 1200px) {
  .main-content { padding: var(--space-12); }
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-lg);
  border-bottom: 3px solid var(--color-accent);
}

.header__container {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  max-width: 1400px;
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.header__logo:hover {
  color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-1px);
}

.header__logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: var(--space-2);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.header__page-title {
  background: rgba(0, 0, 0, 0.1);
  padding: var(--space-6);
  max-width: 1400px;
  margin: 0 auto;
}

.header__page-title h1 {
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin: 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Header Navigation */
.header__nav {
  display: flex;
  align-items: center;
}

.header__menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: var(--font-size-xl);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header__menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.header__nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transition: left var(--transition-fast);
}

.header__nav-link:hover::before,
.header__nav-link--active::before {
  left: 0;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}


/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  min-height: 2.5rem;
  font-family: inherit;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--color-white);
  color: var(--color-gray-700);
  border-color: var(--color-gray-300);
}

.btn--secondary:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
  color: var(--color-gray-800);
  text-decoration: none;
}

.btn--success {
  background: var(--color-success);
  color: var(--color-white);
  border-color: var(--color-success);
}

.btn--success:hover {
  background: hsl(134, 61%, 35%);
  border-color: hsl(134, 61%, 35%);
  color: var(--color-white);
  text-decoration: none;
}

.btn--danger {
  background: var(--color-danger);
  color: var(--color-white);
  border-color: var(--color-danger);
}

.btn--danger:hover {
  background: hsl(354, 70%, 48%);
  border-color: hsl(354, 70%, 48%);
  color: var(--color-white);
  text-decoration: none;
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  min-height: 2rem;
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  min-height: 3rem;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--space-3);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(27 54 93 / 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 6rem;
}

.form-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

.form-help {
  margin-top: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* Card Component */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-base);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card__header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.card__content {
  padding: var(--space-6);
}

.card__footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
}

/* Table Component */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-base);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
}

.table th,
.table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.table th {
  background: var(--color-gray-50);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table tbody tr:hover {
  background: var(--color-gray-50);
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-full);
}

.badge--success {
  background: hsl(134, 61%, 95%);
  color: var(--color-success);
}

.badge--warning {
  background: hsl(45, 100%, 95%);
  color: hsl(45, 100%, 35%);
}

.badge--danger {
  background: hsl(354, 70%, 95%);
  color: var(--color-danger);
}

.badge--info {
  background: hsl(201, 79%, 95%);
  color: var(--color-info);
}

/* Modal Component */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: rgb(0 0 0 / 0.5);
  backdrop-filter: blur(4px);
}

.modal--open {
  display: flex;
}

.modal__content {
  width: 100%;
  max-width: 32rem;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal--open .modal__content {
  transform: scale(1);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.modal__close {
  padding: var(--space-2);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-gray-400);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

.modal__body {
  padding: var(--space-6);
}

.modal__footer {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  padding: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

/* Loading States */
.loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 767px) {
  .container {
    padding: var(--space-4);
  }
  
  .main-content {
    padding: var(--space-4);
  }
  
  .header__content {
    padding: var(--space-4);
  }
  
  .header__page-title {
    padding: var(--space-4);
  }
  
  .header__page-title h1 {
    font-size: var(--font-size-2xl);
  }
  
  .table-container {
    border-radius: 0;
    margin: 0 calc(-1 * var(--space-4));
  }
  
  .modal {
    padding: var(--space-2);
  }
  
  .modal__content {
    max-width: none;
  }
  
  .card__header,
  .card__content,
  .card__footer {
    padding: var(--space-4);
  }
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--radius-base); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Items Grid Component */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.item-checkbox {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.item-checkbox input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.item-checkbox .checkmark {
  height: 20px;
  width: 20px;
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.item-checkbox:hover .checkmark {
  border-color: var(--color-primary);
}

.item-checkbox input:checked ~ .checkmark {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.item-checkbox input:checked ~ .checkmark::after {
  content: '✓';
  color: var(--color-white);
  font-size: 14px;
  font-weight: bold;
}

@media (max-width: 640px) {
  .items-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

/* Enhanced Button States and Interactions */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Improved Focus States */
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(27, 54, 93, 0.1);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27, 54, 93, 0.1);
  transform: translateY(-1px);
}

/* Enhanced Card Hover Effects */
.card {
  position: relative;
  transition: all var(--transition-base);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(27, 54, 93, 0.02) 0%, rgba(75, 83, 32, 0.02) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: inherit;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.card:hover::before {
  opacity: 1;
}

/* Micro-interactions for Interactive Elements */
.nav__link {
  position: relative;
  overflow: hidden;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading-pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

/* Smooth Transitions for State Changes */
* {
  transition: color var(--transition-fast), 
              background-color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

/* Enhanced Notification System */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: var(--z-tooltip);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.notification--show {
  transform: translateX(0);
}

.notification--success {
  background: var(--color-success);
}

.notification--error {
  background: var(--color-danger);
}

.notification--warning {
  background: var(--color-warning);
  color: var(--color-gray-900);
}

.notification--info {
  background: var(--color-info);
}

/* Accessibility Enhancements */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
  
  .card {
    border: 1px solid var(--color-gray-400);
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    border-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus indicators for keyboard navigation */
.btn:focus-visible,
.nav__link:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-base);
}

/* ARIA live regions for dynamic content */
.aria-live-region {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Enhanced color contrast for text */
.text-contrast-high {
  color: var(--color-gray-900);
  font-weight: var(--font-weight-medium);
}

/* Better error states */
.form-input:invalid,
.form-select:invalid,
.form-textarea:invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-error {
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.form-error::before {
  content: '⚠';
  font-size: 16px;
}

/* Action Button Icons */
.action-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
  padding: var(--space-2);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-base);
  background: var(--color-white);
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.action-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.action-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.action-btn .btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
}

.action-btn svg {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

.action-buttons {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  justify-content: center;
}

/* Specific action button colors */
.add-price-btn:hover {
  background: var(--color-success);
  border-color: var(--color-success);
}

.edit-item-btn:hover {
  background: var(--color-info);
  border-color: var(--color-info);
}

.expand-price-btn:hover {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

.review-btn:hover {
  background: var(--color-warning);
  border-color: var(--color-warning);
  color: var(--color-gray-900);
}

/* Touch target sizing for mobile */
@media (max-width: 768px) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav__link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .item-checkbox .checkmark {
    height: 24px;
    width: 24px;
  }
  
  .action-btn {
    min-width: 44px;
    min-height: 44px;
  }
}