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

body {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Microsoft YaHei', sans-serif;
    color: #fff;
}

.game-container {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.game-info {
    width: 200px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
}

.score-box, .level-box {
    font-size: 1.2em;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.next-piece {
    margin: 20px 0;
}

.next-piece h3, .controls h3 {
    margin-bottom: 10px;
    color: #4ecca3;
}

#nextPiece {
    width: 120px;
    height: 120px;
    background: rgba(0, 0, 0, 0.2);
    margin: 10px auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}

.game-board {
    width: 300px;
    height: 600px;
    background: rgba(0, 0, 0, 0.3);
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 1px;
    padding: 10px;
    border-radius: 10px;
}

.cell {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

.cell.active {
    background: #4ecca3;
    box-shadow: 0 0 5px #4ecca3;
}

.cell.locked {
    background: #eeeeee;
}

.controls {
    margin: 20px 0;
}

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

.start-btn {
    width: 100%;
    padding: 10px;
    background: #4ecca3;
    border: none;
    border-radius: 5px;
    color: #1a1a2e;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.start-btn:hover {
    background: #45b393;
    transform: scale(1.05);
}