* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: #111827;
  color: #e5e7eb;
  padding: 1.5rem;
}

.card {
  width: min(420px, 92vw);
  margin: 8vh auto 0;
  padding: 2rem;
  border-radius: 0.9rem;
  background: #1f2937;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

h1 {
  margin-top: 0;
}

form {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

input,
button {
  font-size: 1rem;
  padding: 0.7rem 0.8rem;
  border-radius: 0.5rem;
  border: 1px solid #374151;
}

input {
  background: #111827;
  color: #f9fafb;
}

button {
  background: #2563eb;
  color: white;
  border: 0;
  cursor: pointer;
}

.status {
  min-height: 1.25rem;
  margin-top: 1rem;
}

.error {
  color: #fca5a5;
}

.hidden {
  display: none;
}

.dashboard {
  width: min(1100px, 95vw);
  margin: 0 auto;
}

.dash-header {
  margin-bottom: 1.2rem;
}

.dash-header h1 {
  margin-bottom: 0.2rem;
}

.dash-header p {
  margin: 0;
  color: #9ca3af;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.traffic-card {
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 0.9rem;
  padding: 1rem 1.2rem;
  margin-top: 1rem;
  height: 300px;
}

.traffic-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.traffic-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.traffic-header p {
  margin: 0;
  color: #93c5fd;
  font-weight: 600;
}

.traffic-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.traffic-controls label {
  color: #9ca3af;
  font-size: 0.85rem;
}

.traffic-controls select {
  background: #111827;
  color: #e5e7eb;
  border: 1px solid #374151;
  border-radius: 0.4rem;
  padding: 0.25rem 0.45rem;
}

.router-card {
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 0.9rem;
  padding: 1rem 1.2rem;
}

.router-card h2 {
  margin-top: 0;
  margin-bottom: 0.3rem;
}

.router-card .meta {
  margin-top: 0;
  color: #9ca3af;
  font-size: 0.95rem;
}

.top-indicators {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 0.7rem;
}

.indicator-group {
  background: #111827;
  border: 1px solid #374151;
  border-radius: 0.55rem;
  padding: 0.5rem 1.5rem 0.5rem 0.85rem;
  min-width: 0;
}

@media (max-width: 900px) {
  .top-indicators {
    grid-template-columns: 1fr;
  }
}

.group-title {
  font-size: 0.78rem;
  color: #9ca3af;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.peer-indicator-row {
  display: flex;
  justify-content: flex-start;
  gap: 0.6rem;
  padding-right: 0.5rem;
}

.slot {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.peer-indicator-row .slot:last-child {
  margin-right: 0.75rem;
}

.slot-label {
  font-size: 0.78rem;
  color: #d1d5db;
}

.peer-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.peer-indicator.is-up {
  background: #22c55e;
}

.peer-indicator.is-down {
  background: #ef4444;
}

.indicator-empty {
  color: #9ca3af;
  font-size: 0.9rem;
}