* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  background: radial-gradient(circle at 20% 20%, #1e293b 0%, #0f172a 50%, #020617 100%);
  color: #e2e8f0;
  font-family: sans-serif;
}

.app-root {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  overflow: hidden;
}

.app-shell {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.game-column {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#game-canvas {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: #0f172a;
  box-shadow:
    0 16px 34px rgba(2, 6, 23, 0.55),
    0 0 0 1px rgba(125, 211, 252, 0.08) inset;
  border-radius: 10px;
}

.layout-landscape .game-column {
  height: 100%;
}

.layout-portrait .app-root {
  align-items: flex-start;
}

.layout-portrait .app-shell {
  width: 100%;
}

.layout-portrait .game-column {
  width: 100%;
  flex: 1 1 auto;
}

.layout-portrait #game-canvas {
  max-width: 100%;
  max-height: 100%;
}