body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #0c0c0c, #1a1a2e);
    color: white;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-container {
    text-align: center;
    max-width: 600px;
}

h1 {
    margin-bottom: 20px;
    color: #ffd700;
    text-shadow: 0 0 10px #ffd700;
}

.game-board {
    margin: 20px 0;
    border: 2px solid #333;
    border-radius: 10px;
    background: radial-gradient(circle, #000814, #001d3d);
    display: inline-block;
    padding: 10px;
}

#gameCanvas {
    border-radius: 8px;
    cursor: pointer;
}

.controls {
    margin: 20px 0;
}

#resetBtn, #pauseBtn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
    margin: 0 5px;
}

#resetBtn:hover, #pauseBtn:hover {
    background: #ff5252;
}

#pauseBtn {
    background: #4ecdc4;
}

#pauseBtn:hover {
    background: #45b7d1;
}

#pauseBtn.paused {
    background: #feca57;
}

#pauseBtn.paused:hover {
    background: #ff9ff3;
}

.win-message {
    margin-top: 15px;
    padding: 15px;
    background: #4caf50;
    color: white;
    border-radius: 6px;
    font-size: 18px;
    font-weight: bold;
    animation: pulse 2s infinite;
}

.win-message.hidden {
    display: none;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.instructions {
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    font-size: 14px;
    color: #ccc;
}

.planet-selected {
    box-shadow: 0 0 20px #ffd700;
}

.slot-highlight {
    stroke: #ffd700;
    stroke-width: 3;
    fill: rgba(255, 215, 0, 0.2);
}