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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.game-container {
    display: flex;
    gap: 30px;
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.info-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    color: white;
    min-width: 200px;
}

h1 {
    font-size: 2.5em;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 3px;
}

.score-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
}

.score-item {
    display: flex;
    justify-content: space-between;
    margin: 10px 0;
    font-size: 1.2em;
}

.label {
    font-weight: bold;
}

.next-piece {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

.next-piece h3 {
    margin-bottom: 10px;
}

#nextCanvas {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 5px;
}

.controls {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
}

.controls h3 {
    margin-bottom: 10px;
}

.controls p {
    margin: 5px 0;
    font-size: 0.9em;
}

#startBtn {
    padding: 15px 30px;
    font-size: 1.2em;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
    text-transform: uppercase;
}

#startBtn:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

#startBtn:active {
    transform: translateY(0);
}

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

@media (max-width: 768px) {
    .game-container {
        flex-direction: column;
        align-items: center;
    }
    
    h1 {
        font-size: 2em;
    }
}