:root {
  --bg: radial-gradient(circle at top, #0f172a, #1e293b, #334155);
  --wall: #0ea5e9;
  --player: #38bdf8;
  --goal: #a855f7;
}

body {
  background: var(--bg);
  color: white;
  font-family: "Poppins", sans-serif;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
}

.container {
  text-align: center;
  width: 360px;
}

h1 {
  color: #67e8f9;
}

#maze {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 20px auto;
  border: 2px solid #22d3ee;
  box-shadow: 0 0 30px #0891b2;
  overflow: hidden;
  background: rgba(15, 23, 42, 0.9);
}

#player {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--player);
  border-radius: 50%;
  box-shadow: 0 0 15px var(--player);
}

#goal {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--goal);
  box-shadow: 0 0 20px var(--goal);
}

.wall {
  position: absolute;
  background: var(--wall);
  box-shadow: 0 0 15px var(--wall);
}

#trail {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.controls button {
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  border: none;
  color: white;
  padding: 10px 15px;
  font-size: 1rem;
  border-radius: 8px;
  margin: 5px;
  cursor: pointer;
  font-weight: 600;
}

.controls button:disabled {
  opacity: 0.5;
}