@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

body {
    margin: 0;
    overflow: hidden;
    background-color: #050011;
    font-family: 'Press Start 2P', 'Courier New', monospace;
    user-select: none;
}

#ui-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 30px;
    box-sizing: border-box;
    z-index: 20;
}

#score-board {
    color: #0ff;
    text-shadow: 
        0 0 5px #0ff,
        0 0 10px #0ff,
        0 0 20px #0ff;
    font-size: 20px;
    text-align: left;
    line-height: 1.5;
}

#score-board span {
    color: #fff;
}

#instructions {
    color: #0f0;
    text-shadow: 
        0 0 5px #0f0,
        0 0 10px #0f0;
    text-align: center;
    font-size: 14px;
    margin-bottom: 20px;
    opacity: 0.8;
    animation: pulse 2s infinite;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #f0f;
    text-shadow: 
        0 0 10px #f0f,
        0 0 20px #f0f,
        0 0 40px #f0f;
    font-size: 48px;
    display: none;
    text-align: center;
    background: rgba(20, 0, 20, 0.9);
    padding: 60px;
    border: 4px solid #f0f;
    box-shadow: 
        0 0 20px #f0f,
        inset 0 0 20px #f0f;
    z-index: 30;
}

/* CRT Effects */
.scanlines {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    background: linear-gradient(
        to bottom,
        rgba(255,255,255,0),
        rgba(255,255,255,0) 50%,
        rgba(0,0,0,0.3) 50%,
        rgba(0,0,0,0.3)
    );
    background-size: 100% 4px;
    z-index: 10;
}

.vignette {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    background: radial-gradient(
        circle,
        rgba(0,0,0,0) 50%,
        rgba(0,0,0,0.4) 80%,
        rgba(0,0,0,0.9) 100%
    );
    z-index: 11;
}

/* Screen Flicker */
@keyframes flicker {
    0% { opacity: 0.97; }
    5% { opacity: 0.95; }
    10% { opacity: 0.9; }
    15% { opacity: 0.95; }
    20% { opacity: 0.99; }
    25% { opacity: 0.95; }
    30% { opacity: 0.9; }
    35% { opacity: 0.96; }
    40% { opacity: 0.98; }
    45% { opacity: 0.95; }
    50% { opacity: 0.99; }
    55% { opacity: 0.93; }
    60% { opacity: 0.9; }
    65% { opacity: 0.96; }
    70% { opacity: 1; }
    75% { opacity: 0.97; }
    80% { opacity: 0.95; }
    85% { opacity: 0.92; }
    90% { opacity: 0.98; }
    95% { opacity: 0.95; }
    100% { opacity: 0.98; }
}

body::after {
    content: " ";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(18, 16, 16, 0.1);
    opacity: 0;
    z-index: 12;
    pointer-events: none;
    animation: flicker 0.15s infinite;
}

@keyframes pulse {
    0% { opacity: 0.5; }
    50% { opacity: 1; }
    100% { opacity: 0.5; }
}

/* Responsive Text */
.mobile-msg {
    display: none;
}

@media (max-width: 768px) {
    .desktop-msg {
        display: none;
    }
    .mobile-msg {
        display: inline;
    }
    
    #game-over {
        width: 80%;
        padding: 30px;
        font-size: 32px;
    }
}