:root {
  --bg: #06080c;
  --panel: #121a25;
  --panel-border: #1f2b3a;
  --text: #dfe6ee;
  --accent: #4be1ff;
  --highlight: #00ff9c;
  --muted: #7c8798;
  --danger: #ff7b7b;
  --success: #6fffb0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem clamp(1rem, 3vw, 2.5rem);
  background: radial-gradient(circle at top, rgba(75, 225, 255, 0.12), transparent 55%),
    radial-gradient(circle at bottom, rgba(111, 255, 176, 0.08), transparent 60%),
    var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.dashboard {
  width: min(1040px, 100%);
  display: grid;
  gap: 1.5rem;
}

.dashboard__header {
  text-align: center;
}

.dashboard__header h1 {
  margin: 0 0 0.25rem;
  color: var(--accent);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.controls button {
  padding: 0.65rem 1.4rem;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: rgba(75, 225, 255, 0.16);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.controls button:hover {
  transform: translateY(-1px);
  background: rgba(75, 225, 255, 0.28);
}

.controls button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.card {
  padding: 1.5rem;
  background: rgba(18, 26, 37, 0.88);
  border: 1px solid rgba(32, 43, 61, 0.9);
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(14px);
}

.card__title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
}

.readout-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.readout {
  display: grid;
  gap: 0.15rem;
}

.readout dt {
  margin: 0;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.readout dd {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
}

.readout--highlight dd {
  color: var(--highlight);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.danger {
  color: var(--danger);
}

.success {
  color: var(--success);
}

@media (max-width: 640px) {
  body {
    padding-inline: 1rem;
  }

  .card {
    padding: 1.25rem;
  }

  .readout-list {
    grid-template-columns: minmax(0, 1fr);
  }
}