body {
    margin: 0;
    padding: 0;
    font-family: 'Courier New', monospace;
    background-color: #1A2A1A; /* Darker military green background */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
    overflow: hidden; /* Prevent scrollbars */
    color: white;
    touch-action: none; /* Prevent browser handling of touch events */
}

.game-container {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #8A9B56; /* Military green battlefield */
    display: block;
}

#score {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
    color: white;
    z-index: 10;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    background-color: rgba(0, 0, 0, 0.5);
    padding: 8px 12px;
    border-radius: 5px;
    border: 2px solid #44513A; /* Military border */
    font-weight: bold;
}

.screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(40, 50, 40, 0.9); /* Military green tinted background */
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    z-index: 10;
    min-width: 300px;
    max-width: 90%;
    border: 3px solid #67735A; /* Military border */
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.7);
}

#level-selection {
    color: white;
}

#level-selection h1 {
    color: #DDCF55; /* Military yellow */
    font-size: 36px;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    text-transform: uppercase;
    letter-spacing: 2px;
}

#level-selection h2 {
    color: #BBCCAA;
    margin-bottom: 30px;
    font-size: 18px;
}

.level-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.level-btn, #try-again, #change-level {
    background-color: #5A6A4A; /* Military button color */
    border: 2px solid #44513A;
    color: white;
    padding: 12px 24px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 18px;
    margin: 5px 0;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.2s;
    font-family: 'Courier New', monospace;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.level-btn:hover, #try-again:hover, #change-level:hover {
    background-color: #44513A;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.level-btn:active, #try-again:active, #change-level:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

#easy-btn {
    background-color: #4B7339; /* Olive green */
    border-color: #3A5929;
}

#medium-btn {
    background-color: #9B8149; /* Tan */
    border-color: #7A6539;
}

#hard-btn {
    background-color: #8C4A39; /* Rust red */
    border-color: #6B3929;
}

#game-over h2 {
    color: #FF3333;
    margin-top: 0;
    font-size: 36px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

#game-over p {
    font-size: 24px;
    margin-bottom: 30px;
    color: #DDCF55; /* Military yellow */
}

#try-again {
    background-color: #4B7339; /* Olive green */
    border-color: #3A5929;
    margin-bottom: 10px;
}

#change-level {
    background-color: #5A6A7A; /* Slate blue */
    border-color: #44535A;
    margin-top: 10px;
}

.hidden {
    display: none;
}

/* Add a military-style header bar */
.header-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: rgba(40, 50, 40, 0.7);
    z-index: 5;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Add military-style text shadows to all text */
h1, h2, p, button {
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* Mobile controls */
.mobile-controls {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: none; /* Hidden by default, shown on mobile */
    justify-content: space-between;
    padding: 0 20px;
    box-sizing: border-box;
    z-index: 10;
}

.joystick-area {
    width: 120px;
    height: 120px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    position: relative;
}

.joystick {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid #44513A;
}

.fire-button {
    width: 80px;
    height: 80px;
    background-color: rgba(139, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    border: 2px solid #44513A;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .mobile-controls {
        display: flex;
    }

    #level-selection h1 {
        font-size: 28px;
    }

    #level-selection h2 {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .screen {
        padding: 25px;
    }

    .level-btn, #try-again, #change-level {
        padding: 10px 20px;
        font-size: 16px;
    }

    #game-over h2 {
        font-size: 28px;
    }

    #game-over p {
        font-size: 20px;
    }

    #score {
        font-size: 16px;
        padding: 6px 10px;
    }
}

@media (max-width: 480px) {
    #level-selection h1 {
        font-size: 24px;
    }

    .screen {
        padding: 20px;
        min-width: 250px;
    }

    #game-over h2 {
        font-size: 24px;
    }

    #game-over p {
        font-size: 18px;
    }
}

/* Orientation warning */
.orientation-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #1A2A1A;
    z-index: 1000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}

.orientation-warning img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.orientation-warning p {
    font-size: 20px;
    max-width: 400px;
}

@media (max-height: 450px) and (orientation: landscape) {
    .orientation-warning {
        display: flex;
    }

    .game-container {
        display: none;
    }
}