:root {
  --bg: #050505;
  --text: #f0f0f0;
  --accent: #c0c0c0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  padding: 0.5rem 1.25rem;
  background: #0f0f0f;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

#impressions-panel {
  display: flex;
  align-items: flex-end;
  gap: 0.85rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

#impressions-chart-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 280px;
}

#impressions-chart {
  display: grid;
  grid-template-columns: repeat(144, minmax(1px, 1fr));
  gap: 1px;
  align-items: end;
  height: 90px;
  padding: 6px 6px 4px 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
}

.impression-bar {
  width: 100%;
  min-height: 2px;
  border-radius: 2px 2px 0 0;
  transition: height 0.25s ease, background-color 0.2s ease, opacity 0.2s ease,
    box-shadow 0.15s ease;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  overflow: hidden;
}

.impression-bar.filled {
  opacity: 1;
}

.impression-bar.active {
  box-shadow: 0 0 0 1px rgba(255, 60, 60, 0.5);
}

.impression-bar.empty {
  opacity: 0.35;
}

.impression-stack {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
}

.impression-segment {
  width: 100%;
}

.impressions-axis {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.65);
  padding: 0 4px;
}

#impressions-meta {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 190px;
  align-items: flex-start;
}

#impressions-counter {
  font-size: 1rem;
  font-weight: 600;
  color: #ffae42;
}

.impressions-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0.25rem;
}

.impressions-total {
  font-size: 1.5rem;
  line-height: 1.1;
}

#impressions-reset {
  align-self: flex-start;
  padding: 0.35rem 0.6rem;
  font-size: 0.9rem;
}

main {
  display: flex;
  flex: 1;
  min-height: 0;
}

#visual {
  flex: 3;
  position: relative;
}

#deck-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#controls {
  flex: 1;
  padding: 1rem;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  overflow-y: auto;
}

.control-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.control-grid .control-row {
  margin-bottom: 0;
}

select,
input[type='range'],
button {
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  font-size: 0.95rem;
}

button {
  cursor: pointer;
}

label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

#time-label {
  font-variant-numeric: tabular-nums;
  align-self: flex-end;
}

.time-row .range-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: center;
}

.play-row .control-inline {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.play-row select {
  margin-left: 0.35rem;
}

#legend {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.3rem 0.6rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
}

.legend-note {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
}

.checkbox-row label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.checkbox-row input[type='checkbox'] {
  width: auto;
}

@media (max-width: 900px) {
  main {
    flex-direction: column;
  }
  #controls {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex: unset;
  }
}

@media (max-width: 720px) {
  .header-row {
    flex-direction: column;
    align-items: flex-start;
  }
  #impressions-panel {
    justify-content: flex-start;
  }
  #impressions-meta {
    align-items: flex-start;
  }
}