/* CSS Variables for Theme Support */
:root {
  /* Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-header: #ffffff;
  --bg-overlay: rgba(0, 0, 0, 0.4);
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --border-focus: #3b82f6;
  --accent-primary: #3b82f6;
  --accent-secondary: #1d4ed8;
  --accent-success: #059669;
  --accent-warning: #d97706;
  --accent-error: #dc2626;
  --accent-info: #0891b2;
  --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);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

[data-theme="dark"] {
  /* Dark Theme */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --bg-header: #0f172a;
  --bg-overlay: rgba(0, 0, 0, 0.6);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;
  --border-color: #334155;
  --border-light: #475569;
  --border-focus: #60a5fa;
  --accent-primary: #60a5fa;
  --accent-secondary: #3b82f6;
  --accent-success: #34d399;
  --accent-warning: #fbbf24;
  --accent-error: #f87171;
  --accent-info: #22d3ee;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Dashboard Styles */
.dashboard-container {
  min-height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
}

.dashboard-header {
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.dashboard-header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-focus);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.header-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
  transition: all 0.2s ease;
}

.stat-item:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.dashboard-content {
  flex: 1;
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.filters-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.filter-select,
.filter-input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: all 0.2s ease;
  min-width: 120px;
}

.filter-select:focus,
.filter-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.filter-input {
  min-width: 200px;
}

.main-panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.side-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.2s ease;
}

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

.panel-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-secondary);
}

.panel-header h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.panel-actions {
  display: flex;
  gap: 0.5rem;
}

.panel-content {
  padding: 1.5rem;
}

.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--text-inverse);
  border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

.btn-small {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

.btn-danger {
  background: var(--accent-error);
  color: var(--text-inverse);
  border: 1px solid var(--accent-error);
}

.btn-danger:hover {
  background: #b91c1c;
  border-color: #b91c1c;
  transform: translateY(-1px);
}

/* Peers Table */
.peers-table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
}

.peers-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-family: var(--font-sans);
}

.peers-table th,
.peers-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.peers-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
  position: sticky;
  top: 0;
  z-index: 10;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.peers-table tbody tr {
  transition: background-color 0.2s ease;
}

.peers-table tbody tr:hover {
  background: var(--bg-secondary);
}

.peers-table tbody tr:nth-child(even) {
  background: var(--bg-tertiary);
}

.peers-table tbody tr:nth-child(even):hover {
  background: var(--bg-secondary);
}

.status-connected {
  color: var(--accent-success);
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  background: rgba(5, 150, 105, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.status-disconnected {
  color: var(--accent-error);
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  background: rgba(220, 38, 38, 0.1);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.loading {
  text-align: center;
  color: #6b7280;
  font-style: italic;
}



/* Network Stats */
.network-stats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-light);
  transition: all 0.2s ease;
}

.stat-row:hover {
  background: var(--bg-tertiary);
  transform: translateX(2px);
}

.stat-row:last-child {
  border-bottom: none;
}

.stat-row .stat-label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.stat-row .stat-value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Real-time Events */
.events-container {
  max-height: 250px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.events-container::-webkit-scrollbar {
  width: 6px;
}

.events-container::-webkit-scrollbar-track {
  background: var(--border-light);
  border-radius: 3px;
}

.events-container::-webkit-scrollbar-thumb {
  background: rgba(14, 165, 233, 0.3);
  border-radius: 3px;
}

.events-container::-webkit-scrollbar-thumb:hover {
  background: rgba(14, 165, 233, 0.5);
}

.event-item {
  padding: 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  font-size: 0.8rem;
  border-left: 3px solid;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.event-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.event-item:hover::before {
  transform: translateX(100%);
}

.event-item.info {
  background: rgba(14, 165, 233, 0.1);
  border-left-color: var(--accent-primary);
  color: var(--accent-primary);
  border: 1px solid rgba(14, 165, 233, 0.2);
}

.event-item.success {
  background: rgba(16, 185, 129, 0.1);
  border-left-color: var(--accent-success);
  color: var(--accent-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.event-item.warning {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: var(--accent-warning);
  color: var(--accent-warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.event-item.error {
  background: rgba(239, 68, 68, 0.1);
  border-left-color: var(--accent-error);
  color: var(--accent-error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin: 5% auto;
  padding: 0;
  border-radius: 16px;
  width: 90%;
  max-width: 600px;
  box-shadow: var(--shadow-heavy);
  border: 1px solid var(--border-color);
  animation: slideIn 0.3s ease;
  overflow: hidden;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-secondary);
  position: relative;
}

.modal-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.modal-header h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
}

.close {
  color: var(--text-muted);
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s ease;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-tertiary);
}

.close:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
  transform: rotate(90deg);
}

.modal-body {
  padding: 1.5rem;
  max-height: 70vh;
  overflow-y: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .main-panels {
    grid-template-columns: 1fr;
  }
  
  .side-panels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard-header {
    padding: 1rem;
  }
  
  .dashboard-content {
    padding: 1rem;
  }
  
  .header-stats {
    gap: 1rem;
  }
  
  .stat-value {
    font-size: 1.25rem;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from { 
    opacity: 0; 
    transform: translateY(-50px) scale(0.95); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0) scale(1); 
  }
}

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

.panel {
  animation: slideUp 0.4s ease-out;
}

.panel:nth-child(1) { animation-delay: 0.1s; }
.panel:nth-child(2) { animation-delay: 0.2s; }
.panel:nth-child(3) { animation-delay: 0.3s; }
.panel:nth-child(4) { animation-delay: 0.4s; }

.stat-item {
  animation: slideUp 0.5s ease-out;
}

.stat-item:nth-child(1) { animation-delay: 0.2s; }
.stat-item:nth-child(2) { animation-delay: 0.3s; }
.stat-item:nth-child(3) { animation-delay: 0.4s; }
.stat-item:nth-child(4) { animation-delay: 0.5s; }

/* Additional UI Elements */
.peer-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.peer-name {
  font-weight: 500;
  color: var(--text-primary);
}

.peer-socket {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

.country-badge, .asn-badge, .stream-badge {
  padding: 0.2rem 0.4rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.country-badge {
  background: linear-gradient(135deg, var(--accent-success) 0%, #059669 100%);
  color: white;
}

.asn-badge {
  background: linear-gradient(135deg, var(--accent-warning) 0%, #d97706 100%);
  color: white;
}

.stream-badge {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: white;
}

.role-master, .role-peer {
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.role-master {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.role-peer {
  background: rgba(107, 114, 128, 0.1);
  color: var(--text-secondary);
  border: 1px solid rgba(107, 114, 128, 0.2);
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: 0.4rem;
  animation: pulse 2s infinite;
}

.status-connected .status-dot {
  background: var(--accent-success);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
}

.status-disconnected .status-dot {
  background: var(--accent-error);
  box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}



/* Enhanced table animations */
.peers-table tbody tr {
  animation: slideInRow 0.3s ease-out forwards;
  opacity: 0;
  transform: translateX(-20px);
}

@keyframes slideInRow {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.05);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb {
  background: rgba(102, 126, 234, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(102, 126, 234, 0.5);
}