:root {
    --primary-color: #00ff9d;
    --secondary-color: #00e1ff;
    --accent-color: #ff00aa;
    --bg-color: #121212;
    --panel-color: #1e1e1e;
    --text-color: #ffffff;
    --snake-head: #00ff9d;
    --snake-body: #00cc7a;
    --apple-color: #ff3e3e;
    --wall-color: #333333;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 500px;
    margin-bottom: 20px;
}

h1 {
    margin: 0;
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 255, 157, 0.3);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.game-container {
    position: relative;
    width: 100%;
    max-width: 500px;
}

#gameCanvas {
    display: block;
    width: 100%;
    background-color: var(--panel-color);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 157, 0.2);
    image-rendering: pixelated;
    margin: 0 auto;
}

.controls {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 500px;
    margin-top: 20px;
}

.stats {
    display: flex;
    gap: 20px;
}

.stat {
    background-color: var(--panel-color);
    padding: 10px 15px;
    border-radius: 5px;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

#score {
    color: var(--primary-color);
}

#highScore {
    color: var(--secondary-color);
}

.buttons {
    display: flex;
    gap: 10px;
}

button {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--panel-color);
    color: var(--text-color);
    border: 1px solid var(--primary-color);
}

button:hover {
    background-color: var(--primary-color);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
}

#pauseBtn {
    border-color: var(--secondary-color);
}

#pauseBtn:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 0 15px rgba(0, 225, 255, 0.4);
}

#settingsBtn {
    border-color: var(--accent-color);
}

#settingsBtn:hover {
    background-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(255, 0, 170, 0.4);
}

#gameOver {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#gameOver.show {
    opacity: 1;
    pointer-events: all;
}

#gameOver h2 {
    color: var(--accent-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(255, 0, 170, 0.5);
}

#gameOver p {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.mobile-controls {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 300px;
    margin-top: 20px;
}

.mobile-btn {
    background-color: var(--panel-color);
    border: 1px solid var(--primary-color);
    color: var(--text-color);
    font-size: 1.5rem;
    padding: 15px;
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-btn:hover {
    background-color: var(--primary-color);
    color: #000;
}

.mobile-btn.up {
    grid-column: 2;
    grid-row: 1;
}

.mobile-btn.left {
    grid-column: 1;
    grid-row: 2;
}

.mobile-btn.right {
    grid-column: 3;
    grid-row: 2;
}

.mobile-btn.down {
    grid-column: 2;
    grid-row: 3;
}

.settings-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    z-index: 20;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 20px;
    box-sizing: border-box;
}

.settings-panel.show {
    opacity: 1;
    pointer-events: all;
}

.settings-panel h2 {
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.setting-group {
    width: 100%;
    max-width: 300px;
    margin-bottom: 15px;
}

.setting-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-color);
}

.setting-group select {
    width: 100%;
    padding: 8px;
    border-radius: 5px;
    border: 1px solid var(--primary-color);
    background-color: var(--panel-color);
    color: var(--text-color);
}

.close-settings {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: var(--accent-color);
    border: none;
    border-radius: 5px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-settings:hover {
    background-color: #ff0099;
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(255, 0, 170, 0.4);
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }
    
    .mobile-controls {
        display: grid;
    }
    
    .controls {
        flex-direction: column;
        gap: 15px;
    }
    
    .stats, .buttons {
        width: 100%;
        justify-content: space-between;
    }
}