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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    min-height: 100vh;
    max-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    overflow: hidden;
    touch-action: none;
}

.game-container {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: calc(100vh - 40px);
}

header {
    text-align: center;
}

h1 {
    font-size: 2em;
    margin-bottom: 10px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    background: linear-gradient(45deg, #fff, #ccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.controls {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 15px;
}

.btn {
    padding: 12px 30px;
    font-size: 16px;
    font-weight: bold;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.speed-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
}

.speed-controls label {
    font-weight: bold;
    margin-right: 10px;
}

.speed-btn {
    padding: 6px 14px;
    font-size: 13px;
    font-weight: bold;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
    color: white;
}

.speed-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.speed-btn.active {
    background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
    border-color: transparent;
}

.game-info {
    width: 100%;
}

.score-panel {
    display: flex;
    justify-content: space-around;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.light-score, .dark-score {
    text-align: center;
}

.light-score .label {
    color: #ffd700;
    font-size: 1.1em;
}

.dark-score .label {
    color: #9370db;
    font-size: 1.1em;
}

.score {
    display: block;
    font-size: 1.8em;
    font-weight: bold;
    margin-top: 3px;
}

.canvas-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

#gameCanvas {
    display: block;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    background: #000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.game-status {
    text-align: center;
    margin-top: 20px;
}

#statusMessage {
    font-size: 1.2em;
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .game-container {
        padding: 15px;
        border-radius: 15px;
        width: calc(100vw - 20px);
        max-width: 100%;
        gap: 10px;
    }
    
    h1 {
        font-size: 1.8em;
        margin-bottom: 10px;
    }
    
    .controls {
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 10px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
        flex: 1;
        min-width: 100px;
    }
    
    .speed-controls {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .speed-controls label {
        width: 100%;
        text-align: center;
        margin-bottom: 5px;
    }
    
    .speed-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .score-panel {
        padding: 10px;
    }
    
    .score {
        font-size: 1.5em;
    }
    
    .game-status {
        margin-top: 10px;
    }
    
    #statusMessage {
        font-size: 1em;
    }
}