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

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #000;
    font-family: Arial, sans-serif;
}

#gameContainer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#gameCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#menu {
    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, 0.8);
    z-index: 2;
}

#menu h1 {
    color: #ffffff;
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00;
}

#menu p {
    color: #ffffff;
    font-size: 24px;
    margin-bottom: 30px;
    text-shadow: 0 0 5px #00ff00;
}

#menu button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

#menu button:hover {
    background: #45a049;
    transform: scale(1.05);
    box-shadow: 0 0 15px #4CAF50;
}

.menu-content {
    text-align: center;
    pointer-events: none;
}

#highScoresBtn {
    pointer-events: auto;
    margin-top: 20px;
}

.title-image {
    max-width: 80%;
    max-height: 40vh;
    margin-bottom: 20px;
    pointer-events: none;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.instructions {
    color: #fff;
    font-size: 24px;
    margin: 20px 0;
    pointer-events: none;
}

#score, #health {
    position: fixed;
    color: #fff;
    font-size: 20px;
    padding: 10px;
    z-index: 5;
}

#score {
    top: 10px;
    left: 10px;
}

#health {
    top: 10px;
    right: 10px;
}

#pausedIndicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    flex-direction: column;
    align-items: center;
    z-index: 5;
    padding-top: 100vh;
    transform: translateY(-50%);
}

#pausedIndicator .paused-text {
    color: #fff;
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 50px;
    animation: pausePulse 2s infinite;
    text-align: center;
    width: 100%;
}

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

#pausedIndicator .title-image {
    max-width: 60%;
    max-height: 30vh;
    margin-bottom: 30px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    animation: none;
}

#returnToTitle {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    display: block;
    margin: 0 auto;
}

#returnToTitle:hover {
    background: #45a049;
}

#soundButton {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    z-index: 5;
    width: 32px;
    height: 32px;
    overflow: hidden;
}

#soundIcon {
    width: 64px;
    height: 32px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

#soundIcon.muted {
    transform: translateX(-32px);
}

#pauseButton {
    position: fixed;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid #fff;
    color: #fff;
    cursor: pointer;
    display: none;
}

@media (max-width: 768px) {
    #pauseButton {
        display: block;
    }
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 20;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #1a1a1a;
    padding: 20px;
    border-radius: 10px;
    color: #fff;
    text-align: center;
    min-width: 300px;
}

#highScoresList {
    margin: 20px 0;
    text-align: left;
}

.high-score-item {
    padding: 5px 0;
    border-bottom: 1px solid #333;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    margin: 5px;
    cursor: pointer;
    border-radius: 5px;
    font-size: 16px;
}

button:hover {
    background: #45a049;
}

input[type="text"] {
    padding: 10px;
    margin: 10px 0;
    width: 80%;
    border: none;
    border-radius: 5px;
    font-size: 16px;
}

#healthBar {
    position: fixed;
    top: 60px;
    right: 20px;
    width: 200px;
    height: 20px;
    background-color: #333;
    border: 2px solid #00ff00;
    border-radius: 10px;
    overflow: hidden;
    z-index: 1000;
}

#healthLabel {
    position: fixed;
    top: 35px;
    right: 20px;
    color: #00ff00;
    font-family: 'Arial', sans-serif;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 1000;
}

#healthFill {
    width: 100%;
    height: 100%;
    background-color: #00ff00;
    transition: width 0.3s ease, background-color 0.3s ease;
}

#healthFill.health-90 { background-color: #00ff00; }
#healthFill.health-85 { background-color: #1aff1a; }
#healthFill.health-80 { background-color: #33ff33; }
#healthFill.health-75 { background-color: #4dff4d; }
#healthFill.health-70 { background-color: #66ff66; }
#healthFill.health-65 { background-color: #80ff80; }
#healthFill.health-60 { background-color: #99ff99; }
#healthFill.health-55 { background-color: #b3ffb3; }
#healthFill.health-50 { background-color: #ccffcc; }
#healthFill.health-45 { background-color: #e6ffe6; }
#healthFill.health-40 { background-color: #fff2f2; }
#healthFill.health-35 { background-color: #ffe6e6; }
#healthFill.health-30 { background-color: #ffd9d9; }
#healthFill.health-25 { background-color: #ffcccc; }
#healthFill.health-20 { background-color: #ffbfbf; }
#healthFill.health-15 { background-color: #ffb3b3; }
#healthFill.health-10 { background-color: #ffa6a6; }
#healthFill.health-5 { background-color: #ff9999; }
#healthFill.health-0 { background-color: #ff0000; }

#gameOverModal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.8);
    z-index: 5;
}

#gameOverModal .modal-content {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    color: white;
}

#gameOverModal h2 {
    margin-bottom: 20px;
    font-size: 36px;
}

#gameOverModal p {
    margin-bottom: 30px;
    font-size: 24px;
}

#playAgain {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    display: block;
    margin: 0 auto;
}

#playAgain:hover {
    background: #45a049;
}