/* ========================================
   CSS Reset & Normalize
   ======================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Color Palette - Professional Corporate */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #3b82f6;

  --color-secondary: #64748b;
  --color-secondary-dark: #475569;
  --color-secondary-light: #94a3b8;

  --color-success: #10b981;
  --color-success-dark: #059669;
  --color-success-light: #34d399;

  --color-error: #ef4444;
  --color-error-dark: #dc2626;
  --color-error-light: #f87171;

  --color-warning: #f59e0b;
  --color-warning-dark: #d97706;
  --color-warning-light: #fbbf24;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing Scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Layout */
  --header-height: 64px;
  --container-max-width: 1280px;
  --content-max-width: 1024px;
}

/* ========================================
   Base Styles
   ======================================== */

body {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-normal);
  font-size: var(--font-size-base);
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h5, h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-600);
}

code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  padding: 0.125rem 0.375rem;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-sm);
  color: var(--color-gray-800);
}

/* ========================================
   Layout Components
   ======================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 640px) {
  .grid-cols-sm-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .grid-cols-md-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-cols-md-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid-cols-lg-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-cols-lg-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .header-container {
    padding: 0 var(--spacing-xl);
  }
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.header-logo-icon {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.header-nav a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
}

.header-nav a:hover {
  color: var(--color-primary);
  background-color: var(--color-gray-50);
}

.header-nav a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  background-color: rgba(37, 99, 235, 0.1);
}

/* ========================================
   Main Content Area
   ======================================== */

.main-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

@media (min-width: 768px) {
  .main-content {
    padding: var(--spacing-2xl) 0;
  }
}

/* Page Header */
.page-header {
  margin-bottom: var(--spacing-2xl);
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.page-description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: 0;
}

/* ========================================
   Card Components
   ======================================== */

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: 0;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Card Variants */
.card-interactive {
  cursor: pointer;
}

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

.card-interactive:active {
  transform: translateY(0);
}

.card-success {
  border-color: var(--color-success-light);
  border-left-width: 4px;
}

.card-error {
  border-color: var(--color-error-light);
  border-left-width: 4px;
}

.card-warning {
  border-color: var(--color-warning-light);
  border-left-width: 4px;
}

/* ========================================
   Button Components
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-dark);
  transform: scale(0.98);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--color-gray-100);
}

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

.btn-success:hover:not(:disabled) {
  background-color: var(--color-success-dark);
  box-shadow: var(--shadow-md);
}

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

.btn-error:hover:not(:disabled) {
  background-color: var(--color-error-dark);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-gray-700);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-gray-100);
}

/* Button Group */
.btn-group {
  display: flex;
  gap: var(--spacing-sm);
}

/* ========================================
   Table Styling
   ======================================== */

.table-container {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-wrapper {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table thead {
  background-color: var(--color-gray-50);
  border-bottom: 2px solid var(--color-gray-200);
}

.table th {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
}

.table tbody tr {
  border-bottom: 1px solid var(--color-gray-200);
  transition: background-color var(--transition-fast);
}

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

.table tbody tr:last-child {
  border-bottom: none;
}

.table td {
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-gray-600);
}

/* Table Status Badges */
.table-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.table-badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success-dark);
}

.table-badge-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error-dark);
}

.table-badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--color-warning-dark);
}

.table-badge-info {
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-dark);
}

/* ========================================
   Loading States & Animations
   ======================================== */

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

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

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-content {
  text-align: center;
}

.loading-text {
  margin-top: var(--spacing-md);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 0%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 1rem;
  margin-bottom: var(--spacing-sm);
}

.skeleton-title {
  height: 1.5rem;
  width: 60%;
  margin-bottom: var(--spacing-md);
}

.skeleton-card {
  height: 200px;
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: var(--radius-lg);
}

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

.progress-bar-error {
  background-color: var(--color-error);
}

.progress-bar-animated {
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.15) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.15) 50%,
    rgba(255, 255, 255, 0.15) 75%,
    transparent 75%,
    transparent
  );
  background-size: 1rem 1rem;
  animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
  0% {
    background-position: 1rem 0;
  }
  100% {
    background-position: 0 0;
  }
}

/* ========================================
   Form Elements
   ======================================== */

.form-group {
  margin-bottom: var(--spacing-lg);
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--color-gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-help {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

.form-error {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-xs);
  color: var(--color-error);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.form-check-input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  cursor: pointer;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

@media (min-width: 768px) {
  .footer-container {
    padding: var(--spacing-2xl) var(--spacing-xl);
  }
}

.footer-content {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-section-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* ========================================
   Utility Classes
   ======================================== */

/* Spacing */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }
.text-muted { color: var(--color-gray-500); }

/* Font Weights */
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox Utilities */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* ========================================
   Accessibility Features
   ======================================== */

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

/* Skip to Content Link */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 10000;
}

.skip-to-content:focus {
  top: 0;
}

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

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --color-gray-200: #cccccc;
    --color-gray-300: #999999;
  }

  .btn {
    border: 2px solid currentColor;
  }
}

/* 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;
  }
}

/* ========================================
   Responsive Breakpoints
   ======================================== */

/* Mobile First Approach - Base styles above are for mobile */

/* Small devices (landscape phones, 640px and up) */
@media (min-width: 640px) {
  :root {
    --header-height: 72px;
  }

  .page-title {
    font-size: var(--font-size-4xl);
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }

  h2 {
    font-size: var(--font-size-3xl);
  }

  .card-body {
    padding: var(--spacing-xl);
  }

  .card-header,
  .card-footer {
    padding: var(--spacing-xl);
  }
}

/* Large devices (desktops, 1024px and up) */
@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-2xl);
  }
}

/* Extra large devices (large desktops, 1280px and up) */
@media (min-width: 1280px) {
  .main-content {
    padding: var(--spacing-3xl) 0;
  }
}

/* ========================================
   Alert/Notification Components
   ======================================== */

.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-info {
  background-color: rgba(37, 99, 235, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

/* ========================================
   Test Scenario Specific Styles
   ======================================== */

.test-scenario-card {
  position: relative;
}

.test-status-indicator {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--color-white);
}

.test-status-pass {
  background-color: var(--color-success);
}

.test-status-fail {
  background-color: var(--color-error);
}

.test-status-pending {
  background-color: var(--color-warning);
}

.test-status-running {
  background-color: var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.test-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.test-metric {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.test-metric-value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xs);
}

.test-metric-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
  body {
    background-color: var(--color-white);
  }

  .header,
  .footer,
  .btn,
  .no-print {
    display: none;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
  }

  a {
    text-decoration: underline;
  }
}