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

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --shadow: 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);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: var(--gray-800);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
.header {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  padding: 20px 30px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-lg);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo i {
  font-size: 2.5rem;
  color: var(--primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.logo h1 {
  font-size: 1.8rem;
  color: var(--gray-800);
}

.header-stats {
  display: flex;
  gap: 20px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 15px;
  padding-left: 20px;
  border-left: 2px solid var(--gray-200);
}

.user-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--gray-700);
}

.user-name i {
  font-size: 1.5rem;
  color: var(--primary);
}

.badge.admin {
  background: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--gray-300);
  color: var(--gray-600);
}

.btn-outline:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
}

.stat {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  font-weight: 600;
}

.stat.online {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.stat.offline {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Main Content */
.main-content {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

section {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  padding: 25px;
  box-shadow: var(--shadow-lg);
}

section h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-700);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

section h2 i {
  color: var(--primary);
}

/* Add Website Form */
.add-form {
  background: var(--gray-50);
  padding: 20px;
  border-radius: 12px;
}

.form-row {
  display: flex;
  gap: 15px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-group {
  flex: 1;
  min-width: 150px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--gray-600);
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 15px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* Websites Grid */
.websites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 20px;
}

.website-card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  border: 2px solid var(--gray-200);
  transition: all 0.3s;
  cursor: pointer;
}

.website-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.website-card.online {
  border-left: 4px solid var(--success);
}

.website-card.offline {
  border-left: 4px solid var(--danger);
  animation: shake 0.5s;
}

.website-card.unknown {
  border-left: 4px solid var(--gray-400);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
}

.card-url {
  font-size: 0.85rem;
  color: var(--gray-500);
  word-break: break-all;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

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

.status-badge.offline {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.status-badge.unknown {
  background: rgba(156, 163, 175, 0.1);
  color: var(--gray-500);
}

.card-stats {
  display: flex;
  gap: 20px;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--gray-100);
}

.card-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card-stat-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
}

.card-stat-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-700);
}

.card-actions {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.card-actions .btn {
  flex: 1;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-500);
}

.empty-state i {
  font-size: 4rem;
  margin-bottom: 20px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 1.1rem;
  margin: 5px 0;
}

/* Incidents List */
.incidents-list {
  max-height: 400px;
  overflow-y: auto;
}

.incident-item {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: var(--gray-50);
  border-radius: 8px;
  margin-bottom: 10px;
}

.incident-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.incident-icon.down {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.incident-icon.up {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.incident-content {
  flex: 1;
}

.incident-title {
  font-weight: 600;
  color: var(--gray-800);
}

.incident-details {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.incident-time {
  font-size: 0.8rem;
  color: var(--gray-400);
  white-space: nowrap;
}

.no-incidents {
  text-align: center;
  padding: 40px;
  color: var(--gray-500);
}

.no-incidents i {
  font-size: 3rem;
  color: var(--success);
  margin-bottom: 15px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: white;
  border-radius: 16px;
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid var(--gray-200);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-400);
  cursor: pointer;
  transition: color 0.3s;
}

.close-btn:hover {
  color: var(--gray-700);
}

.modal-body {
  padding: 25px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 15px 25px;
  background: var(--gray-800);
  color: white;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s;
  z-index: 2000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

/* Alert Config */
.alert-config {
  margin-top: 15px;
}

.alerts-list .alert-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--gray-50);
  border-radius: 8px;
  margin-bottom: 10px;
}

/* Response Time Chart */
.response-chart {
  height: 200px;
  background: var(--gray-50);
  border-radius: 8px;
  padding: 15px;
  margin-top: 20px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--gray-50);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 5px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }

  .form-row {
    flex-direction: column;
  }

  .form-group {
    min-width: 100%;
  }

  .websites-grid {
    grid-template-columns: 1fr;
  }

  .card-stats {
    flex-wrap: wrap;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* Loading Spinner */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-300);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Uptime Bar */
.uptime-bar {
  display: flex;
  gap: 2px;
  margin-top: 10px;
}

.uptime-segment {
  flex: 1;
  height: 20px;
  border-radius: 2px;
  transition: all 0.3s;
}

.uptime-segment.up {
  background: var(--success);
}

.uptime-segment.down {
  background: var(--danger);
}

.uptime-segment:hover {
  transform: scaleY(1.2);
}