:root {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-primary: #38bdf8;
  --color-success: #4ade80;
  --color-warning: #fbbf24;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-stack);
  padding: 2rem 1rem;
}

.demo-app__header {
  text-align: center;
  margin-bottom: 3rem;
}

.demo-app__title {
  margin: 0 0 0.5rem 0;
  font-size: 2.5rem;
  color: var(--color-primary);
}

.demo-app__subtitle {
  margin: 0;
  color: var(--color-text-muted);
}

.demo-app__container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .demo-app__container {
    grid-template-columns: 1fr 1fr;
  }
  .results-viewer {
    grid-column: span 2;
  }
}

/* Control Panel Block */
.control-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.control-panel__title {
  margin-top: 0;
  font-size: 1.25rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}

.control-panel__field {
  margin-bottom: 1.2rem;
}

.control-panel__label {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.control-panel__input {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.75rem;
  border-radius: 4px;
  font-size: 1rem;
}

.control-panel__button {
  width: 100%;
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: bold;
  border: none;
  padding: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: opacity 0.2s ease;
}

.control-panel__button:hover {
  opacity: 0.9;
}

/* Pipeline Monitor Block */
.pipeline-monitor {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.pipeline-monitor__title {
  margin-top: 0;
  font-size: 1.25rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}

.pipeline-step {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.pipeline-step--active {
  opacity: 1;
}

.pipeline-step__status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
  margin-top: 4px;
  margin-right: 12px;
  flex-shrink: 0;
}

.pipeline-step--active .pipeline-step__status-indicator {
  background: var(--color-warning);
  box-shadow: 0 0 8px var(--color-warning);
}

.pipeline-step--completed .pipeline-step__status-indicator {
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
}

.pipeline-step__heading {
  margin: 0;
  font-size: 1rem;
}

.pipeline-step__details {
  margin: 0.2rem 0 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Results Viewer Block */
.results-viewer {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
}

.results-viewer__card--hidden {
  display: none;
}

.results-viewer__summary {
  display: flex;
  gap: 2rem;
  background: var(--color-bg);
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.results-viewer__code {
  display: block;
  background: #000;
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  color: var(--color-success);
  font-family: monospace;
}