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

body {
    font-family: 'Courier New', monospace;
    background-color: #000;
    color: #fff;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

#game-screen {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background-color: #000;
    outline: none;
}

#game-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

/* Игровой интерфейс */
#game-ui {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 8px 15px;
    border-radius: 5px;
    border: 2px solid #d4af37;
    display: flex;
    gap: 20px;
    font-size: 18px;
    font-weight: bold;
    text-shadow: 1px 1px 2px #000;
}

#level-indicator, #time-indicator, #lives-indicator, #speed-indicator {
    color: #d4af37;
}

#level-display, #time-display, #lives-display, #speed-display {
    color: #fff;
    font-weight: normal;
}

#speed-display {
    transition: color 0.3s;
}

#speed-display.speed-boost {
    color: #27ae60;
    animation: pulse 0.5s infinite alternate;
}

@keyframes pulse {
    from { opacity: 0.7; }
    to { opacity: 1; }
}

/* Оверлеи */
#message-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    pointer-events: none;
    z-index: 15;
}

#message-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    z-index: -1;
}

#level-complete-overlay,
#game-over-overlay,
#start-overlay,
#pause-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 20;
    display: none;
    text-align: center;
}

#start-overlay {
    display: flex;
}

h1 {
    font-size: 4rem;
    color: #d4af37;
    margin-bottom: 30px;
    text-shadow: 3px 3px 5px #000;
    letter-spacing: 2px;
    font-family: 'Times New Roman', serif;
}

#level-complete-overlay h2,
#game-over-overlay h2,
#pause-overlay h2 {
    font-size: 3.5rem;
    color: #d4af37;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px #000;
    letter-spacing: 1px;
}

#game-over-overlay h2 {
    color: #e74c3c;
}

#level-complete-overlay p,
#game-over-overlay p,
#start-overlay p,
#pause-overlay p {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #f7f1e3;
    text-shadow: 1px 1px 2px #000;
}

.controls-info {
    margin-top: 30px;
    font-size: 1.2rem;
    color: #aaa;
}

.controls-info p {
    font-size: 1.2rem;
    margin-bottom: 5px;
}


#fullscreen-btn:hover {
    opacity: 1;
}

/* Адаптивность */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    #level-complete-overlay h2,
    #game-over-overlay h2,
    #pause-overlay h2 {
        font-size: 2.5rem;
    }

    #level-complete-overlay p,
    #game-over-overlay p,
    #start-overlay p,
    #pause-overlay p {
        font-size: 1.3rem;
    }

    #game-ui {
        font-size: 14px;
        padding: 5px 10px;
        gap: 15px;
        flex-wrap: wrap;
    }

    .controls-info {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    #level-complete-overlay h2,
    #game-over-overlay h2,
    #pause-overlay h2 {
        font-size: 2rem;
    }

    #level-complete-overlay p,
    #game-over-overlay p,
    #start-overlay p,
    #pause-overlay p {
        font-size: 1rem;
    }

    .controls-info {
        font-size: 0.8rem;
    }

    #game-ui {
        flex-direction: column;
        gap: 5px;
        font-size: 12px;
    }

}