:root {
  --font-main: 'Press Start 2P', cursive;
  --grass-green: #5C8A1E;
  --dirt-brown: #7B3F00;
  --stone-grey: #A0A0A0;
  --bg-plains: #C0D8A9;
  --text-main: #F9F9F9;
  --accent-memory: #5C8A1E;
  --border-block: #333;
}

html,
body {
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-rows: auto auto 1fr;
  grid-template-columns: 1fr;
  background: var(--bg-plains);
  color: var(--text-main);
  font-family: var(--font-main);
}

header,
.metrics,
.chart-container {
  min-height: 0;
}

header {
  display: flex;
  align-items: center;
  padding: 0.4rem;
  background: var(--grass-green);
  border-bottom: 3px solid var(--dirt-brown);
}

header h1 {
  margin: 0;
  flex: 1;
  font-size: 0.9rem;
  text-shadow: 2px 2px var(--border-block);
}

.controls {
  display: flex;
  gap: 0.3rem;
}

.controls label,
.controls input,
.controls button {
  font-size: 0.6rem;
  padding: 0.15rem 0.4rem;
  border: 2px solid var(--border-block);
  background: var(--stone-grey);
  color: var(--text-main);
  text-shadow: 1px 1px var(--border-block);
}

.controls input {
  background: #fff;
  color: #000;
  text-shadow: none;
}

.controls button:hover {
  background: var(--grass-green);
  cursor: pointer;
}

.metrics {
  display: flex;
  gap: 0.5rem;
  padding: 0.3rem;
  background: var(--stone-grey);
  border-bottom: 3px solid var(--dirt-brown);
}

.card {
  flex: 1;
  background: var(--dirt-brown);
  border: 3px solid var(--border-block);
  padding: 0.3rem;
  text-align: center;
  box-shadow: inset -3px -3px var(--border-block);
}

.card h2 {
  margin: 0 0 0.2rem;
  font-size: 0.6rem;
  text-shadow: 1px 1px var(--border-block);
}

.card p {
  margin: 0;
  font-size: 0.8rem;
  font-weight: bold;
}

.chart-container {
  display: flex;
  padding: 0.3rem;
  background: var(--stone-grey);
}

.chart-container canvas {
  flex: 1 1 auto;
  width: 100% !important;
  height: 100% !important;
  background: #fff;
  border: 2px solid var(--border-block);
}