:root {
  color-scheme: dark;
  --bg: #05060c;
  --panel: #11172d;
  --line: #425381;
  --text: #edf2ff;
  --muted: #a9b8e9;
  --accent: #7cfff6;
  --warn: #ffcb8e;
  --good: #98ffa8;
  --hot: #ff7f9f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 14% -6%, #2d3f78 0%, #0a1225 42%, #05060c 100%);
  display: flex;
  justify-content: center;
  padding: 1rem;
}

.app {
  width: min(1020px, 100%);
  display: grid;
  gap: 0.85rem;
}

.hero,
.hud,
.stage,
.controls {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(18, 27, 51, 0.95), rgba(7, 11, 22, 0.96));
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.42), inset 0 0 0 1px rgba(179, 196, 255, 0.08);
}

.hero {
  padding: 1rem 1.1rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.45rem, 2.8vw, 2rem);
  color: var(--accent);
  text-shadow: 0 0 15px rgba(124, 255, 246, 0.33);
}

.hero p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.hud {
  padding: 0.7rem 0.9rem;
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.hud div {
  border: 1px solid #33416d;
  border-radius: 10px;
  background: rgba(7, 11, 22, 0.77);
  padding: 0.52rem 0.58rem;
  display: grid;
  gap: 0.2rem;
}

.hud span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #95a5db;
}

.hud strong {
  font-size: 1.06rem;
  color: #f8fbff;
}

.stage {
  padding: 0.85rem;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid #5c70ae;
  background: radial-gradient(circle at center, #10182f 0%, #060b15 74%);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
  touch-action: none;
}

.status {
  margin: 0.7rem 0 0;
  text-align: center;
  color: var(--warn);
  min-height: 1.35rem;
}

.status.good {
  color: var(--good);
}

.controls {
  padding: 0.75rem;
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
}

button {
  border: 1px solid #5b70b5;
  border-radius: 10px;
  background: #192550;
  color: #f0f6ff;
  font-weight: 700;
  padding: 0.62rem 1rem;
  cursor: pointer;
}

button:hover:not(:disabled) {
  filter: brightness(1.12);
}

button.primary {
  border-color: #98fff3;
  background: linear-gradient(180deg, #2f93b8, #1d6180);
}

button:disabled {
  opacity: 0.56;
  cursor: not-allowed;
}

@media (max-width: 820px) {
  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}