/* Base typography - mobile first */
html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

/* Focus states */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

/* Layout */
html {
  position: relative;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Mobile-optimized cards */
.card {
  border-radius: 0.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

/* Responsive navbar */
@media (max-width: 991.98px) {
  .navbar-nav {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .navbar-nav .nav-link {
    padding: 0.5rem 0;
  }
}

/* Button improvements */
.btn {
  border-radius: 0.375rem;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
}

/* Form controls */
.form-control, .form-select {
  border-radius: 0.375rem;
  border: 1px solid #dee2e6;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus, .form-select:focus {
  border-color: #86b7fe;
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Mobile touch targets */
@media (max-width: 767.98px) {
  .btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
  }

  .form-control, .form-select {
    min-height: 44px;
  }

  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
}

/* Hero section gradient */
.bg-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
}

/* Feature icons */
.feature-icon {
  font-size: 2rem;
}

/* Stats cards on dashboard */
.card-body h3 {
  font-size: 2rem;
  font-weight: 700;
}

/* Mobile spacing adjustments */
@media (max-width: 767.98px) {
  .py-5 {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }

  .display-4 {
    font-size: 2rem;
  }

  .display-5 {
    font-size: 1.75rem;
  }
}

/* Alert animations */
.alert {
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading states */
.btn.loading {
  position: relative;
  color: transparent !important;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 1rem;
  height: 1rem;
  top: 50%;
  left: 50%;
  margin-left: -0.5rem;
  margin-top: -0.5rem;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

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

/* Responsive tables */
@media (max-width: 767.98px) {
  .table-responsive {
    font-size: 0.875rem;
  }
}

/* Badge improvements */
.badge {
  font-weight: 500;
  padding: 0.35em 0.65em;
}

/* List group improvements */
.list-group-item {
  border-left: none;
  border-right: none;
}

.list-group-item:first-child {
  border-top: none;
}

.list-group-item:last-child {
  border-bottom: none;
}

/* Accessibility improvements */
.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;
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
  /* Add dark mode styles here if desired */
}