:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #334155;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

main {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* Status Indicator */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--text-muted);
}
.dot.online { background-color: var(--success); box-shadow: 0 0 8px var(--success); }
.dot.offline { background-color: var(--danger); box-shadow: 0 0 8px var(--danger); }

/* Layout Grids */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.approvals-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Stat Box */
.stat-box {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
}
.stat-value.active { color: var(--success); }
.stat-value.inactive { color: var(--danger); }
.stat-value.warning { color: var(--warning); }

/* Progress Bar */
.progress-bar-bg {
  width: 100%;
  height: 6px;
  background-color: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--accent);
  transition: width 0.3s ease;
}
.progress-bar-fill.warning { background-color: var(--warning); }
.progress-bar-fill.danger { background-color: var(--danger); }

/* Tables */
.queue-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
}

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

.queue-table th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.875rem;
}

.queue-table td {
  font-size: 0.875rem;
}

/* Approval Item */
.approval-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.approval-content {
  font-size: 0.875rem;
  white-space: pre-wrap;
  background-color: rgba(0, 0, 0, 0.2);
  padding: 1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
}

.approval-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-approve {
  background-color: var(--success);
  color: white;
}
.btn-approve:hover { background-color: #059669; }

.btn-reject {
  background-color: transparent;
  border: 1px solid var(--danger);
  color: var(--danger);
}
.btn-reject:hover { background-color: rgba(239, 68, 68, 0.1); }

/* Utilities */
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }

/* Status badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}
.badge.pending { background-color: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge.processing { background-color: rgba(59, 130, 246, 0.2); color: var(--accent); }
.badge.completed { background-color: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge.failed { background-color: rgba(239, 68, 68, 0.2); color: var(--danger); }