:root {
  --color-background-primary: #f0f0f0;
  --color-background-secondary: #ffffff;
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-border-primary: #cccccc;
  --color-border-secondary: #999999;
  --color-border-tertiary: #dddddd;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
#game-wrap {
  width: 100%;
  min-height: 520px;
  display: flex;
  flex-direction: column;
}
#hud {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 0.5px solid var(--color-border-tertiary);
  flex-wrap: wrap;
}
.legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.leg {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--color-text-secondary);
}
.leg-sq {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}
#turn-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-left: auto;
}
#wrap-rel {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
}
#canvas-wrap {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 8px;
  background: var(--color-background-secondary);
}
#gc {
  cursor: default;
  display: block;
}
#sidebar {
  padding: 10px 12px;
  border-top: 0.5px solid var(--color-border-tertiary);
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.stat-box {
  font-size: 11px;
  color: var(--color-text-secondary);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.stat-box b {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
}
#msg {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-left: auto;
  font-style: italic;
}
#speed-wrap {
  display: flex;
  margin-left: 2rem;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-secondary);
}
#leaderboard {
  font-size: 11px;
  color: var(--color-text-secondary);
  border-collapse: collapse;
  border: 0.5px solid var(--color-border-tertiary);
  border-radius: 4px;
  overflow: hidden;
  margin-left: auto;
}
#leaderboard th {
  background: var(--color-background-secondary);
  padding: 6px 10px;
  text-align: left;
  font-weight: 500;
  color: var(--color-text-primary);
  border-bottom: 0.5px solid var(--color-border-tertiary);
}
#leaderboard td {
  padding: 6px 10px;
  border-bottom: 0.5px solid var(--color-border-tertiary);
}
#leaderboard tr:last-child td {
  border-bottom: none;
}
#overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.9);
  z-index: 10;
  border-radius: var(--border-radius-lg);
}
#overlay-box {
  background: var(--color-background-primary);
  border-radius: var(--border-radius-lg);
  border: 0.5px solid var(--color-border-tertiary);
  padding: 28px 32px;
  text-align: center;
  max-width: 300px;
}
#overlay-box h2 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
}
#overlay-box p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
  line-height: 1.5;
}
button {
  font-size: 13px;
  padding: 7px 18px;
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  background: var(--color-background-primary);
  color: var(--color-text-primary);
  cursor: pointer;
  font-family: inherit;
}
button:hover {
  background: var(--color-background-secondary);
}
#tick-bar-wrap {
  height: 3px;
  background: var(--color-border-tertiary);
  position: relative;
}
#tick-bar {
  height: 3px;
  background: #4a90d9;
  width: 0%;
  transition: width linear;
}