* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.game-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

#gameCanvas {
    background: linear-gradient(to bottom, #87CEEB 0%, #E0F6FF 50%, #87CEEB 100%);
    display: block;
    outline: none; /* Remove focus outline */
}

#ui {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#score {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 48px;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

#startScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
}

#startScreen h1 {
    font-size: 64px;
    margin-bottom: 20px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

#startScreen p {
    font-size: 24px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#gameOverScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    background: rgba(0, 0, 0, 0.7);
    padding: 40px;
    border-radius: 15px;
    z-index: 10;
}

#gameOverScreen.hidden {
    display: none;
}

#gameOverScreen h2 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #ff6b6b;
}

#gameOverScreen p {
    font-size: 24px;
    margin: 10px 0;
}

#finalScore {
    font-size: 32px;
    font-weight: bold;
    color: #ffd93d;
}