:root {
  color-scheme: dark;
  --bg: #070a13;
  --panel: #10172a;
  --line: #33446b;
  --text: #ecf2ff;
  --muted: #9db0d7;
  --cyan: #63f2ff;
  --lime: #a8ff70;
  --amber: #ffd469;
  --danger: #ff7397;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(99, 242, 255, 0.18), transparent 34%),
    radial-gradient(circle at 85% -5%, rgba(168, 255, 112, 0.14), transparent 32%),
    linear-gradient(180deg, #0b1324 0%, var(--bg) 100%);
}

.deck {
  width: min(980px, 94vw);
  margin: 1.8rem auto 2.4rem;
  display: grid;
  gap: 0.95rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  padding: 1rem 1.1rem;
}

.kicker {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
}

h1 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.58rem, 3.8vw, 2.35rem);
}

.subtitle {
  margin: 0.48rem 0 0;
  max-width: 64ch;
  color: var(--muted);
}

.hud {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
}

.stat {
  border: 1px solid #3b4c73;
  border-radius: 10px;
  padding: 0.52rem 0.62rem;
  background: rgba(11, 17, 30, 0.72);
}

.label {
  display: block;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.value {
  display: block;
  margin-top: 0.16rem;
  font-size: 1.12rem;
  font-weight: 700;
}

.game-panel {
  display: grid;
  gap: 0.7rem;
}

.game-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
}

h2 {
  margin: 0;
  font-size: 1.05rem;
}

.pace {
  margin: 0;
  color: var(--amber);
  font-size: 0.86rem;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 2px solid #455983;
  background: linear-gradient(180deg, #151f38 0%, #0c1325 100%);
  display: block;
}

.status {
  margin: 0;
  min-height: 1.3rem;
  color: #d6e0ff;
}

.status.ok {
  color: var(--lime);
}

.status.bad {
  color: var(--danger);
}

.buttons {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

button {
  border-radius: 10px;
  border: 1px solid #3e4f75;
  background: #131d33;
  color: var(--text);
  font: inherit;
  padding: 0.56rem 0.92rem;
  cursor: pointer;
  transition: transform 90ms ease, filter 120ms ease;
}

button:enabled:hover {
  filter: brightness(1.08);
}

button:enabled:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.53;
  cursor: not-allowed;
}

button.primary {
  border-color: #0ca8ba;
  background: linear-gradient(180deg, #64f3ff, #1490a6);
  color: #06212a;
  font-weight: 700;
}

.controls-note {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.notes ul {
  margin: 0.54rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.3rem;
}

.back-link {
  display: inline-block;
  margin-top: 0.8rem;
  color: #93f8ff;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

@media (max-width: 760px) {
  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}