:root {
  --bg: #050816;
  --bg2: #081327;
  --panel: rgba(7, 17, 35, 0.82);
  --panel-border: rgba(112, 215, 255, 0.22);
  --cyan: #7de3ff;
  --cyan-strong: #b9f6ff;
  --orange: #ff8d57;
  --orange-strong: #ffd08f;
  --text: #edf7ff;
  --muted: #99b8ca;
  --shadow: rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(0, 157, 255, 0.18), transparent 34%),
    radial-gradient(circle at 80% 20%, rgba(255, 130, 76, 0.2), transparent 22%),
    linear-gradient(160deg, var(--bg), var(--bg2));
  overflow: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background-image:
    radial-gradient(circle at 20% 25%, rgba(255, 255, 255, 0.9) 0 1px, transparent 2px),
    radial-gradient(circle at 60% 75%, rgba(255, 255, 255, 0.65) 0 1px, transparent 2px),
    radial-gradient(circle at 75% 35%, rgba(255, 255, 255, 0.75) 0 1px, transparent 2px),
    radial-gradient(circle at 45% 55%, rgba(255, 255, 255, 0.45) 0 1px, transparent 2px);
  background-size: 280px 280px;
  opacity: 0.35;
  animation: drift 36s linear infinite;
}

body::after {
  background:
    linear-gradient(rgba(125, 227, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125, 227, 255, 0.09) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
  opacity: 0.25;
}

.layout {
  width: min(1120px, 100%);
}

.hud-card {
  padding: 22px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px var(--shadow);
}

.hud-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--orange-strong);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

h1,
h2 {
  margin: 0;
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.stat-box {
  min-width: 92px;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  text-align: center;
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 4px;
}

.stat-box strong {
  font-size: 1.35rem;
  color: var(--cyan-strong);
}

.arena-frame {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(125, 227, 255, 0.2);
  background:
    radial-gradient(circle at 50% 0%, rgba(125, 227, 255, 0.12), transparent 44%),
    linear-gradient(180deg, rgba(6, 12, 28, 0.94), rgba(5, 9, 21, 0.98));
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(2, 6, 18, 0.5);
}

.overlay.hidden {
  display: none;
}

.overlay-panel {
  max-width: 520px;
  padding: 28px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(6, 12, 26, 0.92);
  text-align: center;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
  animation: rise-in 450ms ease-out;
}

.overlay-panel p {
  line-height: 1.6;
  color: var(--muted);
}

button {
  margin-top: 10px;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  cursor: pointer;
  color: #041320;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, var(--orange), var(--orange-strong));
  box-shadow: 0 12px 24px rgba(255, 141, 87, 0.28);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

button:hover,
button:focus-visible {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 16px 28px rgba(255, 141, 87, 0.38);
}

.controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.control-pill {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.control-pill span {
  color: var(--cyan);
  font-weight: 700;
}

@keyframes drift {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(280px);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 820px) {
  body {
    padding: 12px;
  }

  .hud-card {
    padding: 14px;
    border-radius: 18px;
  }

  .hud-top {
    flex-direction: column;
  }

  .stats {
    width: 100%;
    justify-content: flex-start;
  }
}