:root {
    --bg-color: #1a1a1a;
    --screen-bg: #0d1117;
    --primary-color: #39ff14;
    /* Neon Green */
    --secondary-color: #ff00ff;
    /* Neon Magenta */
    --danger-color: #ff3333;
    /* Neon Red */
    --text-color: #e0e0e0;
    --grid-color: #1f2428;
    --bezel-color: #2c2c2c;
}

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

body {
    background-color: var(--bg-color);
    font-family: 'Press Start 2P', cursive;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: var(--text-color);
    overflow: hidden;
    user-select: none;
    /* Prevent text selection */
}

/* Monitor Bezel */
.monitor {
    background-color: var(--bezel-color);
    padding: 20px;
    border-radius: 20px;
    box-shadow:
        0 0 0 10px #111,
        0 20px 50px rgba(0, 0, 0, 0.5);
    position: relative;
    max-width: 100%;
}

.game-container {
    background-color: var(--screen-bg);
    padding: 20px;
    border-radius: 5px;
    border: 2px solid #333;
    position: relative;
    z-index: 1;
    width: 450px;
    /* Fixed width for consistency */
}

/* CRT Scanline Effect */
.crt-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%,
            rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg,
            rgba(255, 0, 0, 0.06),
            rgba(0, 255, 0, 0.02),
            rgba(0, 0, 255, 0.06));
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
    z-index: 10;
    border-radius: 20px;
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.9);
}

header {
    text-align: center;
    margin-bottom: 15px;
    text-shadow: 2px 2px 0px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.score-board {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--secondary-color);
    padding: 10px;
    background: #000;
    border: 2px solid #333;
    margin-bottom: 15px;
}

.game-area {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

canvas {
    background-color: #000;
    border: 2px solid var(--text-color);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.1);
    display: block;
    image-rendering: pixelated;
    width: 100%;
    height: 100%;
}

/* Overlays */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    z-index: 5;
    border: 2px solid var(--text-color);
}

.hidden {
    display: none !important;
}

.overlay h2 {
    color: var(--primary-color);
    font-size: 24px;
    margin-bottom: 30px;
    animation: pulse 2s infinite;
}

.overlay .danger-text {
    color: var(--danger-color);
}

.instructions {
    font-size: 12px;
    color: #aaa;
    margin-bottom: 15px;
    line-height: 1.6;
}

/* Buttons */
.pixel-btn {
    background: var(--primary-color);
    color: #000;
    border: 4px solid #1f5f16;
    border-right-color: #1f5f16;
    border-bottom-color: #1f5f16;
    border-left-color: #a7ffa7;
    border-top-color: #a7ffa7;
    padding: 15px 25px;
    font-family: 'Press Start 2P', cursive;
    font-size: 14px;
    cursor: pointer;
    margin-top: 20px;
    transition: transform 0.1s;
    box-shadow: 0 4px 0 #1f5f16;
}

.pixel-btn:active {
    transform: translateY(4px);
    box-shadow: 0 0 0 #1f5f16;
}

.pixel-btn:hover {
    background: #5cff3d;
}

.controls-hint {
    margin-top: 15px;
    text-align: center;
    font-size: 10px;
    color: #444;
}

.key {
    background: #444;
    padding: 3px 6px;
    border-radius: 2px;
    color: #fff;
    border-bottom: 2px solid #222;
}

/* Animations */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes flicker {
    0% {
        opacity: 0.98;
    }

    10% {
        opacity: 0.95;
    }

    20% {
        opacity: 0.99;
    }

    30% {
        opacity: 0.96;
    }

    40% {
        opacity: 0.98;
    }

    100% {
        opacity: 0.99;
    }
}

.game-container {
    animation: flicker 0.2s infinite;
}