:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --bg-main: #f8fafc;
  --bg-white: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

/* Header */
.header {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: 700;
}

.logo h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: #f0fdf4;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--success);
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

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

/* Main Content */
.main-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Stats Section */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Leads Section */
.leads-section {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.section-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.refresh-btn {
  padding: 8px 16px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.refresh-btn:hover {
  background: var(--border);
}

/* Table */
.table-container {
  overflow-x: auto;
}

.leads-table {
  width: 100%;
  border-collapse: collapse;
}

.leads-table thead {
  background: var(--bg-main);
}

.leads-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

.leads-table td {
  padding: 16px;
  font-size: 14px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.leads-table tbody tr {
  transition: background 0.15s ease;
}

.leads-table tbody tr:hover {
  background: var(--bg-main);
}

.loading-cell {
  text-align: center;
  padding: 60px !important;
  color: var(--text-secondary);
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.status-badge.active {
  background: #dbeafe;
  color: var(--primary);
}

.status-badge.idle {
  background: #fef3c7;
  color: var(--warning);
}

.status-badge.error {
  background: #fee2e2;
  color: var(--danger);
}

/* Action Button */
.action-btn {
  padding: 6px 14px;
  background: var(--primary);
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.action-btn:hover {
  background: var(--primary-dark);
}

/* History Section */
.history-section {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.history-container {
  max-height: 500px;
  overflow-y: auto;
  padding: 16px;
  background: var(--bg-main);
  border-radius: 8px;
  margin-top: 16px;
}

.history-message {
  margin-bottom: 16px;
  padding: 16px;
  border-radius: 8px;
  border-left: 3px solid;
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
}

.history-message.human {
  border-left-color: var(--primary);
}

.history-message.ai {
  border-left-color: var(--success);
}

.history-message.tool {
  border-left-color: var(--warning);
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.message-type {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.message-time {
  font-size: 11px;
  color: var(--text-secondary);
}

.message-content {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.loading-message {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

/* Buttons */
.delete-btn {
  padding: 8px 16px;
  background: #fee2e2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: var(--danger);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.delete-btn:hover {
  background: #fecaca;
}

.close-btn, .clear-btn {
  padding: 8px 16px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.close-btn:hover, .clear-btn:hover {
  background: var(--border);
}

/* Logs Section */
.logs-section {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.logs-container {
  max-height: 300px;
  overflow-y: auto;
  padding: 16px;
  background: var(--bg-main);
  border-radius: 8px;
  margin-top: 16px;
}

.log-entry {
  padding: 10px 14px;
  margin-bottom: 8px;
  border-radius: 6px;
  font-size: 13px;
  font-family: 'Monaco', 'Courier New', monospace;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border-left: 3px solid;
  background: var(--bg-white);
}

.log-entry.system {
  border-left-color: var(--primary);
}

.log-entry.info {
  border-left-color: #3b82f6;
}

.log-entry.success {
  border-left-color: var(--success);
}

.log-entry.error {
  border-left-color: var(--danger);
}

.log-time {
  color: var(--text-secondary);
  font-size: 11px;
  white-space: nowrap;
}

.log-text {
  flex: 1;
  color: var(--text-primary);
  line-height: 1.4;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--bg-white);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: var(--bg-main);
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

.modal-body p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 20px 24px;
  border-top: 1px solid var(--border);
}

.cancel-btn {
  padding: 10px 20px;
  background: var(--bg-main);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cancel-btn:hover {
  background: var(--border);
}

.confirm-btn {
  padding: 10px 20px;
  background: var(--danger);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

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

::-webkit-scrollbar-track {
  background: var(--bg-main);
  border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
  background: #cbd5e1;
}

/* Responsive */
@media (max-width: 1024px) {
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 16px;
  }
  
  .stats-section {
    grid-template-columns: 1fr;
  }
  
  .leads-table {
    font-size: 12px;
  }
  
  .leads-table th,
  .leads-table td {
    padding: 12px;
  }
}