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

@font-face {
    font-family: 'Pixelade';
    src: url('fonts/PIXELADE.TTF') format('truetype');
}

:root {
    --neon-purple: #b026ff;
    --neon-blue: #00ffff;
    --neon-cyan: #00ff9f;
    --neon-yellow: #ffff00;
}

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

body {
    background-color: rgba(0, 0, 0, 0.85);
    font-family: 'Pixelade', sans-serif;
    overflow: hidden;
    min-height: 100vh;
    display: block;
}

.game-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
    position: relative;
}

.start-menu {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    padding: 40px;
    text-align: center;
    border: 2px solid var(--neon-blue);
    box-shadow: 0 0 20px var(--neon-blue);
    z-index: 10;
}

.start-menu h2 {
    color: var(--neon-blue);
    font-size: 36px;
    margin-bottom: 30px;
    text-shadow: 0 0 10px var(--neon-blue);
}

#playButton {
    background: var(--neon-purple);
    border: none;
    padding: 15px 40px;
    color: #fff;
    font-family: 'Pixelade', sans-serif;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#playButton:hover {
    background: var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-blue);
}

.game-container {
    position: relative;
    width: 800px;
    height: 600px;
    background-color: #000;
    border: 2px solid var(--neon-blue);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
    overflow: hidden;
}

canvas {
    background-color: #000;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    display: block;
    width: 100%;
    height: 100%;
}

.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    color: var(--neon-blue);
    text-shadow: 0 0 5px var(--neon-blue);
    pointer-events: none;
    font-size: 24px;
}

.score-container {
    position: absolute;
    top: 20px;
    left: 20px;
}

.score {
    margin-bottom: 5px;
}

.health-bar {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 200px;
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--neon-purple);
    box-shadow: 0 0 10px var(--neon-purple);
}

.health-fill {
    width: 100%;
    height: 100%;
    background: var(--neon-purple);
    transition: width 0.3s ease;
}

.weapon-level {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--neon-cyan);
    text-shadow: 0 0 5px var(--neon-cyan);
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    padding: 40px;
    text-align: center;
    border: 2px solid var(--neon-purple);
    box-shadow: 0 0 20px var(--neon-purple);
}

.game-over h2 {
    color: var(--neon-red);
    margin-bottom: 20px;
    font-size: 36px;
}

.game-over p {
    color: var(--neon-blue);
    margin-bottom: 30px;
    font-size: 24px;
}

#restartButton {
    background: var(--neon-purple);
    border: none;
    padding: 15px 30px;
    color: #fff;
    font-family: 'Pixelade', sans-serif;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#restartButton:hover {
    background: var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-blue);
}

.hidden {
    display: none;
}

.level-up {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--neon-yellow);
    text-shadow: 0 0 10px var(--neon-yellow);
    font-size: 48px;
    opacity: 0;
    pointer-events: none;
    animation: levelUpAnim 2s ease-out;
}

@keyframes levelUpAnim {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1);
    }
}

.level-progress-bar {
    width: 150px;
    height: 10px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--neon-yellow);
    box-shadow: 0 0 10px var(--neon-yellow);
}

.level-progress-fill {
    width: 0%;
    height: 100%;
    background: var(--neon-yellow);
    transition: width 0.3s ease;
}

.controls {
    width: 800px;
    text-align: center;
    color: white;
    font-size: 16px;
    font-family: 'Pixelade', sans-serif;
    margin-top: -20px;
    margin-left: 50%;
    transform: translateX(-50%);
}

.controls p {
    margin: 5px 0;
}

.pause-menu {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    padding: 40px;
    text-align: center;
    border: 2px solid var(--neon-cyan);
    box-shadow: 0 0 20px var(--neon-cyan);
    z-index: 10;
}

.pause-menu h2 {
    color: var(--neon-cyan);
    font-size: 36px;
    margin-bottom: 30px;
    text-shadow: 0 0 10px var(--neon-cyan);
}

#resumeButton {
    background: var(--neon-purple);
    border: none;
    padding: 15px 40px;
    color: #fff;
    font-family: 'Pixelade', sans-serif;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#resumeButton:hover {
    background: var(--neon-cyan);
    box-shadow: 0 0 15px var(--neon-cyan);
}

@media (max-width: 1200px) {
    .game-wrapper {
        padding: 20px;
    }
    
    .game-container {
        width: 100%;
        max-width: 800px;
        height: 600px;
    }
}

@media (max-width: 768px) {
    .game-container {
        height: 500px;
    }
    
    .ui-overlay {
        font-size: 20px;
    }
    
    .health-bar {
        width: 150px;
    }
    
    .nickname-input input {
        width: 180px;
        font-size: 18px;
    }
    
    #playButton, #restartButton {
        padding: 12px 30px;
        font-size: 20px;
    }
    
    .controls p {
        font-size: 14px;
    }
}