/* Shared demo layout shell.
   Goal: remove duplicated per-demo boilerplate without changing demo JS. */

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--space-black);
  color: var(--text-primary);
  line-height: var(--line-height-normal);
}

.demo-wrapper {
  min-height: 100vh;
  position: relative;
}

/* Most demos use a fixed background canvas with id=starfield */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.demo-content {
  position: relative;
  z-index: 1;
  max-width: var(--demo-max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-lg);
}

.demo-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

/* Panels */
.viz-panel {
  background: rgba(18, 18, 31, 0.92);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.panel-title,
.viz-title {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
  text-align: center;
  line-height: var(--line-height-tight);
}

/* Common grids (demos can override grid-template-columns as needed) */
.readout-panel,
.controls-grid,
.viz-layout,
.dual-panel,
.main-viz {
  gap: var(--space-md);
}

.readout-panel {
  display: grid;
  margin-bottom: var(--space-md);
}

.controls-grid {
  display: grid;
  margin-bottom: var(--space-md);
}

.control-card {
  background: rgba(18, 18, 31, 0.92);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--space-md);
}

.control-card.full-width {
  grid-column: 1 / -1;
}

.control-title {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  line-height: var(--line-height-tight);
}

.control-value {
  font-family: var(--font-mono);
  color: var(--cosmic-teal);
}

/* Common control bars used across demos */
.animation-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: rgba(18, 18, 31, 0.92);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--space-md);
}

.speed-control {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: auto;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.speed-control select {
  padding: 6px 10px;
  min-height: 44px;
  background: var(--space-light);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--text-primary);
}

@media (max-width: 700px) {
  .demo-content {
    padding: var(--space-md);
  }

  .animation-controls {
    flex-wrap: wrap;
  }

  .speed-control {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
}