/**
 * KK7NQN Repeater Dashboard - Shared CSS
 * Consistent styling and accessibility improvements
 */

/* CSS Custom Properties for theming */
:root {
  --kk7nqn-bg-primary: #0d1117;
  --kk7nqn-bg-secondary: #161b22;
  --kk7nqn-border: #30363d;
  --kk7nqn-text-primary: #c9d1d9;
  --kk7nqn-text-secondary: #8b949e;
  --kk7nqn-text-link: #58a6ff;
  --kk7nqn-accent: #1f6feb;
  --kk7nqn-success: #238636;
  --kk7nqn-warning: #9a6700;
  --kk7nqn-error: #da3633;
}

/* Base styles */
body {
  background-color: var(--kk7nqn-bg-primary);
  color: var(--kk7nqn-text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

/* Improved contrast for accessibility */
.card {
  background-color: var(--kk7nqn-bg-secondary);
  border: 1px solid var(--kk7nqn-border);
  color: var(--kk7nqn-text-primary);
}

.table {
  color: var(--kk7nqn-text-primary);
  --bs-table-bg: transparent;
}

.table-striped > tbody > tr:nth-of-type(odd) > td {
  background-color: rgba(255, 255, 255, 0.02);
}

.table-hover > tbody > tr:hover > td {
  background-color: rgba(255, 255, 255, 0.05);
}

/* Headers */
h1, h2, h3, h4, h5, h6 {
  color: var(--kk7nqn-text-link);
  font-weight: 600;
}

/* Links */
a {
  color: var(--kk7nqn-text-link);
  text-decoration: none;
}

a:hover {
  color: var(--kk7nqn-text-link);
  text-decoration: underline;
}

/* Forms */
.form-control {
  background-color: var(--kk7nqn-bg-secondary);
  border: 1px solid var(--kk7nqn-border);
  color: var(--kk7nqn-text-primary);
}

.form-control:focus {
  background-color: var(--kk7nqn-bg-secondary);
  border-color: var(--kk7nqn-text-link);
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.25);
  color: var(--kk7nqn-text-primary);
}

.form-control::placeholder {
  color: var(--kk7nqn-text-secondary);
}

/* Buttons */
.btn-primary {
  background-color: var(--kk7nqn-accent);
  border-color: var(--kk7nqn-accent);
}

.btn-primary:hover {
  background-color: #1a5ebb;
  border-color: #1a5ebb;
}

.btn-primary:focus {
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.5);
}

/* Navigation */
.nav-tabs {
  border-bottom: 1px solid var(--kk7nqn-border);
}

.nav-tabs .nav-link {
  color: var(--kk7nqn-text-secondary);
  border: 1px solid transparent;
}

.nav-tabs .nav-link:hover {
  color: var(--kk7nqn-text-link);
  border-color: var(--kk7nqn-border);
}

.nav-tabs .nav-link.active {
  color: var(--kk7nqn-text-primary);
  background-color: var(--kk7nqn-bg-secondary);
  border-color: var(--kk7nqn-border);
}

/* Accessibility improvements */
.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;
}

/* Focus indicators */
*:focus {
  outline: 2px solid var(--kk7nqn-text-link);
  outline-offset: 2px;
}

/* Skip link for screen readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--kk7nqn-bg-secondary);
  color: var(--kk7nqn-text-primary);
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

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

/* Loading states */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
}

/* Alert improvements */
.alert {
  border: none;
  border-left: 4px solid;
}

.alert-danger {
  background-color: rgba(218, 54, 51, 0.1);
  border-left-color: var(--kk7nqn-error);
  color: #ff7b72;
}

.alert-warning {
  background-color: rgba(154, 103, 0, 0.1);
  border-left-color: var(--kk7nqn-warning);
  color: #ffa657;
}

.alert-success {
  background-color: rgba(35, 134, 54, 0.1);
  border-left-color: var(--kk7nqn-success);
  color: #7ee787;
}

.alert-info {
  background-color: rgba(88, 166, 255, 0.1);
  border-left-color: var(--kk7nqn-text-link);
  color: var(--kk7nqn-text-link);
}

/* Table improvements */
.table-responsive {
  border: 1px solid var(--kk7nqn-border);
  border-radius: 8px;
}

.table thead th {
  background-color: var(--kk7nqn-bg-secondary);
  border-bottom: 1px solid var(--kk7nqn-border);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 10;
}

.table td, .table th {
  border-bottom: 1px solid rgba(48, 54, 61, 0.5);
  padding: 0.75rem;
  vertical-align: middle;
}

/* Sortable table headers */
.sortable-header {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: 1.5rem;
}

.sortable-header:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.sortable-header::after {
  content: "↕";
  position: absolute;
  right: 0.5rem;
  opacity: 0.5;
}

.sortable-header.sort-asc::after {
  content: "↑";
  opacity: 1;
}

.sortable-header.sort-desc::after {
  content: "↓";
  opacity: 1;
}

/* Badge improvements */
.badge {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-callsign {
  background-color: var(--kk7nqn-accent);
  color: white;
  text-decoration: none;
}

.badge-callsign:hover {
  background-color: #1a5ebb;
  color: white;
  text-decoration: none;
}

/* Mobile improvements */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .nav-tabs {
    flex-wrap: wrap;
  }
  
  .nav-tabs .nav-link {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }
  
  .table-responsive {
    font-size: 0.875rem;
  }
  
  .card {
    margin-bottom: 1rem;
  }
  
  /* Stack navigation vertically on very small screens */
  @media (max-width: 576px) {
    .nav-tabs {
      flex-direction: column;
    }
    
    .nav-tabs .nav-item {
      width: 100%;
    }
    
    .nav-tabs .nav-link {
      text-align: center;
      border-radius: 0;
    }
  }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    max-width: 100%;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --kk7nqn-border: #58a6ff;
    --kk7nqn-text-primary: #ffffff;
    --kk7nqn-text-secondary: #c9d1d9;
  }
}

/* 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;
  }
}

/* Print styles */
@media print {
  body {
    background: white !important;
    color: black !important;
  }
  
  .card {
    border: 1px solid black !important;
    background: white !important;
    box-shadow: none !important;
  }
  
  .nav-tabs,
  .btn,
  .alert {
    display: none !important;
  }
}

/* Chart container improvements */
.chart-container {
  position: relative;
  height: 300px;
  margin: 1rem 0;
}

@media (max-width: 768px) {
  .chart-container {
    height: 200px;
  }
}

/* Footer */
footer {
  margin-top: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--kk7nqn-border);
  color: var(--kk7nqn-text-secondary);
  font-size: 0.9rem;
}

/* Utility classes */
.text-muted {
  color: var(--kk7nqn-text-secondary) !important;
}

.border-custom {
  border-color: var(--kk7nqn-border) !important;
}

.bg-custom {
  background-color: var(--kk7nqn-bg-secondary) !important;
}

/* Status indicators */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.status-online {
  background-color: rgba(35, 134, 54, 0.2);
  color: #7ee787;
}

.status-offline {
  background-color: rgba(218, 54, 51, 0.2);
  color: #ff7b72;
}

.status-warning {
  background-color: rgba(154, 103, 0, 0.2);
  color: #ffa657;
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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