body {
    font-family: 'Press Start 2P', cursive;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: url('../images/background.webp') no-repeat center center fixed;
    background-size: cover;
    color: #fff;
    margin: 0;
    overflow: hidden;
}

canvas {
    border: 3px solid #66D9EF;
    background-color: #1a1a1a;
    box-shadow: 0 0 15px rgba(102, 217, 239, 0.7), 0 0 30px rgba(102, 217, 239, 0.5);
    image-rendering: pixelated;
    border-radius: 8px;
}

h1:not(.merciTitle) {
    font-family: 'Press Start 2P', cursive;
    font-size: 48px;
    color: #00ccff;
    text-align: center;
    letter-spacing: 4px;
    padding: 20px;
    display: inline-block;
    margin-top: 20px;
    position: relative;
    z-index: 1;
    text-shadow: 0 0 5px #00ccff, 0 0 10px #00ccff, 0 0 20px #00ccff, 0 0 30px #0077ff, 0 0 40px #0033cc, 0 0 50px #0011aa;
    animation: none;
}

h1::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/pixel_background.webp') no-repeat center center;
    background-size: cover;
    z-index: -1;
    opacity: 0.9;
}

@keyframes letter-flicker {
    0%, 80% {
        opacity: 1;
        text-shadow: 
            0 0 5px #00ccff, 
            0 0 10px #00ccff, 
            0 0 20px #00ccff, 
            0 0 30px #0077ff, 
            0 0 40px #0033cc, 
            0 0 50px #0011aa;
    }
    81%, 85% {
        opacity: 0.5;
    }
    86%, 100% {
        opacity: 0;
        text-shadow: none;
    }
}

@keyframes global-flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% {
        opacity: 1;
        text-shadow: 0 0 5px #00ccff, 0 0 10px #00ccff, 0 0 20px #00ccff, 0 0 30px #0077ff, 0 0 40px #0033cc, 0 0 50px #0011aa;
    }
    19%, 23%, 24%, 54%, 56% {
        opacity: 0;
        text-shadow: none;
    }
}

@keyframes random-flicker {
    0%, 85% {
        opacity: 1;
        text-shadow: 0 0 5px #00ccff, 0 0 10px #00ccff, 0 0 20px #00ccff, 0 0 30px #0077ff, 0 0 40px #0033cc, 0 0 50px #0011aa;
    }
    86%, 100% {
        opacity: 0;
        text-shadow: none;
    }
}

h1 span {
    display: inline-block;
    animation: global-flicker 6s infinite;
}

h1 span.random-flicker {
    animation: random-flicker 3s infinite alternate;
}

#score, #lives {
    font-family: 'Press Start 2P', cursive;
    font-size: 20px;
    color: #FFD700;
    text-shadow: 2px 2px 0 #000000;
    background-color: #444;
    padding: 5px;
    border: 3px solid #FF0000;
    box-shadow: 0 0 10px #FF0000, 0 0 20px #FF0000;
    margin: 10px;
    border-radius: 10px;
}

@keyframes pop-in {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

#score, #lives {
    animation: pop-in 0.5s ease-out;
}

#scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.2),
        rgba(0, 0, 0, 0.2) 1px,
        transparent 1px,
        transparent 3px
    );
    z-index: 10;
}

#scoreContainer {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 10px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 5;
}

#scoreDisplay, #multiplierDisplay, #livesDisplay {
    font-family: 'Press Start 2P', cursive;
    font-size: 16px;
    background-color: rgba(0, 0, 0, 0.6);
    color: #FFD700;
    text-shadow: 1px 1px 0 #000;
    padding: 4px 8px;
    border-radius: 4px;
    box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.4);
    border: none;
    position: absolute;
    z-index: 5;
}

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

#multiplierDisplay {
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
}

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

#title {
    font-family: 'Press Start 2P', cursive;
    font-size: 48px;
    color: #00ccff;
    text-align: center;
    padding: 20px;
    display: inline-block;
    margin-top: 20px;
    position: relative;
    z-index: 1;
    background-color: #002233;
    border: 5px solid #00ccff;
    border-radius: 10px;
    box-shadow: 0 0 15px #00ffcc, inset 0 0 5px #003344;
}

.merciTitle {
    font-family: 'Press Start 2P', cursive;
    font-size: 3em;
    color: #ff0000;
    text-shadow: 0 0 10px #ff0000, 0 0 20px #ff5500, 0 0 30px #ff5500;
    text-align: center;
    margin: 0;
    padding: 0;
    background: none;
    border: none;
    position: relative;
}

#title span {
    animation: overall-flicker 6s infinite;
    text-shadow: 0 0 5px #00ccff, 0 0 10px #00ccff, 0 0 20px #00ccff, 0 0 30px #0077ff, 0 0 40px #0033cc, 0 0 50px #0011aa;
}

#gameTitle {
    font-family: 'Press Start 2P', cursive;
    font-size: 48px;
    text-align: center;
    padding: 10px 20px;
    margin: 0;
    max-width: 500px;
    color: #00BFFF;
    text-shadow: 0 0 8px #00BFFF, 0 0 12px #0077FF;
    background: linear-gradient(135deg, #002233, #001122);
    border: 2px solid #00BFFF;
    border-radius: 5px;
    box-shadow: 0 0 12px rgba(0, 191, 255, 0.4), inset 0 0 5px rgba(0, 51, 102, 0.6);
    position: relative;
    z-index: 1;
}

#menuContainer {
    background: url('../images/background_metal.webp') no-repeat center center;
    background-size: cover;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 20px;
    border: 5px solid #ff0000;
    box-shadow: 0 0 15px #ff0000;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin-top: 50px;
    width: 100%;
    max-width: 400px;
    opacity: 1;
    z-index: 2;
}

.menu-option {
    font-family: 'Press Start 2P', cursive;
    font-size: 24px;
    color: #ff0000;
    padding: 10px 20px;
    text-align: center;
    text-shadow: 0 0 10px #ff0000, 0 0 20px #880000;
    border: 2px solid #ff0000;
    background-color: #220000;
    width: 300px;
    border-radius: 5px;
    box-shadow: 0 0 10px #ff0000, inset 0 0 5px #440000;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.menu-option:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px #ff0000, 0 0 30px #ff0000, inset 0 0 10px #880000;
    color: #ffffff;
}

@keyframes flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        opacity: 1;
        text-shadow: 0 0 10px #ff0000, 0 0 20px #ff0000, 0 0 30px #ff0000;
    }
    20%, 22%, 24%, 55% {
        opacity: 0.8;
        text-shadow: none;
    }
}

.menu-option {
    animation: flicker 2s infinite;
}

#gameContainer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
    height: 600px;
    padding: 20px;
    background: url(../assets/damier.png) repeat;
    border: 3px solid #66D9EF;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
    box-sizing: border-box;
    filter: contrast(1.2) saturate(1.2);
    overflow: hidden;
    position: relative;
}

#gameContainer::after {
    content: "";
    position: absolute;
    top: -10%;
    left: -10%;
    right: -10%;
    bottom: -10%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.2), transparent 60%);
    pointer-events: none;
    z-index: 10;
    border-radius: 10px;
}

#gameArea {
    background-image: url('../assets/damier.png');
    background-size: 128px 128px;
    background-repeat: repeat;
    opacity: 0.8;
    display: flex;
    align-content: center;
    justify-content: center;
    width: 100%;
    max-width: 760px;
    height: 100%;
    background-color: #333;
    padding-top: 30px;
    box-sizing: border-box;
}

#interfaceContainer {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: #333;
    border: 3px solid #00FFCC;
    box-shadow: 0 0 15px #00FFCC;
    border-radius: 10px;
    padding: 10px;
    margin-top: 10px;
    width: 100%;
}

#menuButton {
    font-family: 'Press Start 2P', cursive;
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: #000033;
    color: #00CCFF;
    border: 2px solid #00CCFF;
    box-shadow: 0 0 10px #00CCFF;
    text-shadow: 0 0 5px #00CCFF;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

#menuButton:hover {
    color: #FFFF00;
    box-shadow: 0 0 15px #00CCFF;
}