:root {
  --bg: #070917;
  --panel: #111b36;
  --panel2: #0a1228;
  --line: #2d4f97;
  --text: #e7f2ff;
  --muted: #8fb3e2;
  --gold: #ffe58a;
  --accent: #69d3ff;
  --hot: #ff6fcf;
  --good: #66ffc0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Courier New", Courier, monospace;
  color: var(--text);
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(124, 179, 255, 0.06) 0,
      rgba(124, 179, 255, 0.06) 1px,
      transparent 1px,
      transparent 4px
    ),
    radial-gradient(circle at 12% -12%, #2e3c7a, transparent 48%),
    radial-gradient(circle at 88% 118%, #3f1c72, transparent 42%),
    var(--bg);
  padding: 22px;
}

.app {
  width: min(980px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.topbar,
.panel {
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 1px rgba(129, 176, 255, 0.22);
}

.topbar {
  background: linear-gradient(180deg, #1c2f61, #111e42);
  padding: 16px 18px;
}

.topbar h1 {
  margin: 8px 0 5px;
  color: #fff3b1;
  letter-spacing: 0.04em;
}

.topbar p {
  margin: 0;
  color: var(--muted);
}

.back {
  color: #9bd8ff;
  text-decoration: none;
  font-weight: bold;
}

.panel {
  background: linear-gradient(180deg, var(--panel), var(--panel2));
  padding: 14px;
}

.status-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)) auto;
  gap: 10px;
  align-items: stretch;
}

.stat {
  border: 1px solid #335ca7;
  border-radius: 10px;
  padding: 10px;
  background: #08152f;
  display: grid;
  gap: 4px;
}

.stat span {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat strong {
  color: var(--gold);
  font-size: 1.2rem;
}

.stage-panel {
  position: relative;
  padding: 12px;
}

canvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #3d69b6;
  background: #040914;
  display: block;
}

.overlay {
  position: absolute;
  inset: 26px;
  border-radius: 10px;
  background: rgba(2, 8, 20, 0.75);
  display: grid;
  place-content: center;
  text-align: center;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.overlay.hidden {
  opacity: 0;
}

.overlay-title {
  font-size: clamp(1.2rem, 4vw, 2.1rem);
  color: var(--hot);
  text-shadow: 0 0 12px rgba(255, 112, 212, 0.5);
  margin-bottom: 8px;
}

.overlay p {
  margin: 0;
  color: #b8d7ff;
}

.controls-panel {
  display: grid;
  gap: 10px;
}

.button-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 10px;
}

button {
  font: inherit;
  border: 1px solid #3c64b2;
  border-radius: 9px;
  background: #132653;
  color: var(--text);
  padding: 10px 14px;
  cursor: pointer;
  transition: filter 140ms ease, transform 90ms ease;
}

button:hover { filter: brightness(1.12); }
button:active { transform: translateY(1px); }

button.primary {
  background: linear-gradient(180deg, #6a63ff, #4442ce);
  border-color: #8f93ff;
  color: #fff;
  min-width: 170px;
}

button.small {
  min-width: 120px;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

@media (max-width: 760px) {
  body { padding: 12px; }

  .status-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .button-row {
    grid-template-columns: 1fr;
  }

  button.primary {
    width: 100%;
  }
}