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

body {
    background-color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: 'Arial', sans-serif;
}

.game-container {
    position: relative;
    width: 400px;
    height: 600px;
    background: linear-gradient(to bottom, #4EC0CA, #4EC0CA);
    overflow: hidden;
    border: 4px solid #543847;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

#gameCanvas {
    display: block;
    width: 100%;
    height: 100%;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    text-align: center;
}

.screen h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #FFD700;
    text-shadow: 3px 3px 0 #543847;
    font-family: 'Courier New', monospace;
}

.screen p {
    font-size: 18px;
    margin: 10px 0;
}

.screen p:last-child {
    font-size: 24px;
    color: #FFD700;
}

.hidden {
    display: none;
}

/* Bird animation */
.bird {
    transition: transform 0.1s;
}