:root {
  --ink: #131f2f;
  --panel: rgba(255, 255, 255, 0.9);
  --line: rgba(19, 31, 47, 0.15);
  --field-a: #eef5dd;
  --field-b: #d7ebba;
  --accent: #f1543f;
  --accent-deep: #d94330;
  --shadow: 0 16px 44px rgba(19, 31, 47, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at 82% 14%, rgba(241, 84, 63, 0.28), transparent 30%),
    radial-gradient(circle at 14% 20%, rgba(104, 167, 78, 0.25), transparent 35%),
    linear-gradient(132deg, #f7fbe9 0%, #f1f9e4 48%, #fff7f2 100%);
}

.shell {
  width: min(1240px, 94vw);
  margin: 0 auto;
  padding: 2rem 0 2.2rem;
}

header h1 {
  margin: 0.15rem 0 0;
  font-family: "Changa", sans-serif;
  font-size: clamp(1.8rem, 4.6vw, 3.2rem);
  letter-spacing: 0.02em;
}

header p {
  margin-top: 0.45rem;
}

.kicker {
  margin: 0;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 0.82rem;
  font-weight: 700;
  color: #4f6f31;
}

.arena-grid {
  margin-top: 1.1rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 0.9rem;
}

.table-wrap {
  position: relative;
  border-radius: 18px;
  border: 2px solid var(--line);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(120deg, var(--field-a), var(--field-b));
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 0.7rem;
  text-align: center;
  background: rgba(16, 26, 38, 0.64);
  color: #fff;
}

.overlay[hidden] {
  display: none !important;
}

.overlay h2 {
  margin: 0;
  font-size: 2rem;
}

.overlay button {
  justify-self: center;
  min-width: 180px;
}

.panel {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.scores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}

.scores article {
  margin: 0;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
}

.scores h2 {
  margin: 0;
  font-size: 0.9rem;
}

.scores p {
  margin: 0.2rem 0 0;
  font-size: 2rem;
  font-family: "Changa", sans-serif;
}

.controls {
  margin-top: 0.95rem;
  display: grid;
  gap: 0.55rem;
}

button {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.62rem 0.75rem;
  font: inherit;
  font-weight: 700;
  background: #fff;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

button:hover {
  transform: translateY(-1px);
  background: #fff6f0;
}

#startCameraBtn {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

#startCameraBtn:hover {
  background: var(--accent-deep);
}

.status {
  margin: 0.8rem 0 0;
  font-size: 0.88rem;
  color: #4d5967;
}

#previewCanvas {
  margin-top: 0.8rem;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0d1520;
}

kbd {
  border: 1px solid rgba(19, 31, 47, 0.28);
  border-radius: 6px;
  padding: 0.12rem 0.3rem;
  background: #fff;
}

@media (max-width: 1020px) {
  .arena-grid {
    grid-template-columns: 1fr;
  }
}