body {
    margin: 0;
    background-color: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

#game {
    position: relative;
    display: flex;
    gap: 20px;
}

#tetris {
    border: 2px solid #333;
    background-color: #000;
}

#side-panel {
    width: 150px;
    color: white;
    font-family: Arial, sans-serif;
}

.panel-section {
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid #333;
    padding: 15px;
    margin-bottom: 20px;
}

.panel-section h2 {
    margin: 0 0 10px 0;
    font-size: 24px;
    color: #FF0D72;
}

#score {
    font-size: 32px;
    font-weight: bold;
    text-align: center;
}

#next-piece {
    background: #000;
    display: block;
    margin: 0 auto;
}

#game-over {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: Arial, sans-serif;
}

#game-over.hidden {
    display: none;
}

#game-over h1 {
    font-size: 48px;
    margin: 0 0 20px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

#restart {
    padding: 12px 24px;
    font-size: 20px;
    background: #FF0D72;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

#restart:hover {
    background: #FF2982;
}