/* Critical CSS for above-the-fold content */
/* This file contains only the essential styles needed for initial page render */

/* Reset and base styles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

/* Layout wrapper */
.layout-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.layout-container {
  display: flex;
  flex: 1;
}

/* Navigation */
.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1e40af;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1rem;
}

.nav-link {
  color: #6b7280;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.nav-link:hover,
.nav-link:focus {
  color: #1e40af;
  background-color: rgba(59, 130, 246, 0.1);
}

/* Content area */
.content-wrapper {
  flex: 1;
  padding: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Cards */
.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 1rem;
}

.card-header {
  padding: 1rem;
  border-bottom: 1px solid #e5e7eb;
  font-weight: 600;
  color: #1f2937;
}

.card-body {
  padding: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
  min-width: 44px;
}

.btn-primary {
  background-color: #1e40af;
  color: #ffffff;
  border-color: #1e40af;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #1e3a8a;
  border-color: #1e3a8a;
}

.btn-secondary {
  background-color: #6b7280;
  color: #ffffff;
  border-color: #6b7280;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: #4b5563;
  border-color: #4b5563;
}

/* Forms */
.form-control {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: #1f2937;
  background-color: #ffffff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: #1e40af;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #1f2937;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
}

.table th,
.table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

.table th {
  background-color: #f9fafb;
  font-weight: 600;
  color: #1f2937;
}

.table tbody tr:hover {
  background-color: #f9fafb;
}

/* Alerts */
.alert {
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: 0.375rem;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.alert-warning {
  background-color: #fffbeb;
  border-color: #fed7aa;
  color: #92400e;
}

.alert-error {
  background-color: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

.alert-info {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

/* Loading states */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #e5e7eb;
  border-top-color: #1e40af;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 0 0.5rem;
  }
  
  .navbar {
    padding: 0.5rem;
  }
  
  .content-wrapper {
    padding: 0.5rem;
  }
  
  .card-body {
    padding: 0.75rem;
  }
  
  .btn {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
}

/* Focus indicators for accessibility */
*:focus {
  outline: 2px solid #1e40af;
  outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: #1e40af;
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 10000;
}

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

/* Screen reader only content */
.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;
}