:root {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #fff;
  background-color: #0f1116;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow: hidden;
  background-color: #050608;
}

#game {
  width: 100vw;
  height: 100vh;
  display: block;
  background: radial-gradient(circle at center, #111320, #050608 65%);
}

.hud {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.logo {
  font-size: 20px;
  font-weight: 600;
}

.status {
  display: flex;
  gap: 16px;
}

.stat span {
  opacity: 0.7;
  margin-right: 6px;
}

.buttons button {
  background: #2ec4b6;
  border: none;
  color: #041017;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  margin-left: 8px;
  transition: opacity 0.2s;
}

.buttons button:hover {
  opacity: 0.8;
}

.leaderboard {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 220px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.leaderboard h3 {
  margin: 0 0 6px;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.leaderboard ol {
  margin: 0;
  padding-left: 18px;
}

#overlay {
  position: fixed;
  inset: 0;
  backdrop-filter: blur(15px);
  background: rgba(5, 6, 8, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
}

#overlay form {
  background: #111320;
  padding: 30px;
  border-radius: 20px;
  width: min(320px, 90vw);
  text-align: center;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

#overlay input {
  width: 100%;
  margin: 15px 0;
  padding: 10px;
  border-radius: 999px;
  border: none;
  outline: none;
  text-align: center;
  font-size: 18px;
}

#overlay button {
  background: #f25c54;
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
}