:root {
  color-scheme: dark;
  font-family: Arial, Helvetica, sans-serif;
  background: #071a2c;
  color: #f6f3ea;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100dvh;
  background: radial-gradient(circle at 50% 0, #183b48, #071a2c 68%);
  display: flex;
  justify-content: center;
}
main {
  width: min(100%, 980px);
  padding: clamp(12px, 3vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
header,
.hud,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
header h1 {
  margin: 0;
  font-size: clamp(26px, 5vw, 44px);
  letter-spacing: -0.05em;
}
header p {
  margin: 4px 0 0;
  color: #b9c9c8;
  font-size: 14px;
}
.hud {
  font: 800 12px/1.2 monospace;
  letter-spacing: 0.1em;
  color: #d8ff3e;
}
.hud strong {
  color: #f6f3ea;
  font-size: 18px;
}
button {
  cursor: pointer;
  border: 1px solid #9ab1ae;
  background: #18323e;
  color: #f6f3ea;
  border-radius: 8px;
  min-height: 44px;
  padding: 8px 15px;
  font-weight: 800;
}
button:hover,
button:focus-visible {
  border-color: #d8ff3e;
  color: #d8ff3e;
}
button.primary {
  background: #d8ff3e;
  color: #071a2c;
  border-color: #d8ff3e;
}
button.primary:hover,
button.primary:focus-visible {
  background: #f2ffa4;
}
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.stage {
  position: relative;
  display: grid;
  place-items: center;
  align-self: center;
  width: min(100%, var(--canvas-width), calc(66dvh * var(--canvas-ratio)));
  min-height: 0;
  background: #0b202c;
  border: 1px solid #42625e;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 50px #0005;
}
canvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
}
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  background: #071a2cdd;
  padding: 20px;
}
.overlay[hidden] {
  display: none;
}
.overlay h2 {
  font-size: clamp(30px, 6vw, 58px);
  margin: 0;
  letter-spacing: -0.06em;
}
.overlay p {
  max-width: 450px;
  line-height: 1.5;
  margin: 0 0 8px;
  color: #d2dfda;
}
.hint {
  color: #9cbab8;
  font-size: 13px;
  line-height: 1.5;
  margin: 0;
}
kbd {
  border: 1px solid #62817b;
  border-radius: 4px;
  padding: 2px 5px;
  color: #e0f7e7;
}
.mini-leaderboard {
  border: 1px solid #42625e;
  border-radius: 16px;
  background: #0b202c;
  padding: 20px;
}
.mini-board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.mini-board-top small {
  font: 800 11px monospace;
  letter-spacing: 0.13em;
  color: #72e4ba;
}
.mini-board-top h2 {
  margin: 4px 0;
  font-size: 24px;
}
.mini-board-tabs {
  display: flex;
  gap: 6px;
}
.mini-board-tabs button {
  min-height: 44px;
  font-size: 12px;
}
.mini-board-tabs [aria-pressed='true'] {
  background: #d8ff3e;
  color: #071a2c;
  border-color: #d8ff3e;
}
.mini-board-status,
.mini-board-own {
  font-size: 13px;
  color: #b9c9c8;
}
.mini-board-list {
  list-style: none;
  padding: 0;
  margin: 12px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 16px;
}
.mini-board-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid #315461;
  padding: 8px 0;
  font-size: 14px;
}
.mini-board-list li.is-you {
  color: #d8ff3e;
  font-weight: 800;
}
.mini-board-retry[hidden] {
  display: none;
}
@media (max-width: 600px) {
  main {
    gap: 10px;
  }
  .hud {
    font-size: 11px;
  }
  .hud strong {
    font-size: 15px;
  }
  .stage {
    width: min(100%, var(--canvas-width), calc(58dvh * var(--canvas-ratio)));
  }
  .mini-board-list {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 360px) {
  .overlay {
    gap: 8px;
    padding: 10px;
  }
  .overlay h2 {
    font-size: 24px;
  }
  .overlay p {
    margin: 0;
    font-size: 12px;
    line-height: 1.25;
  }
}