tetris-game/style.css

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

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

.game-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 900px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-area {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.info-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-box {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.info-box h3 {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.info-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

#next-canvas {
    background: #fff;
    border: 2px solid #667eea;
    border-radius: 8px;
}

.canvas-container {
    position: relative;
}

#game-canvas {
    background: #1a1a2e;
    border: 3px solid #667eea;
    border-radius: 10px;
    display: block;
}

.game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.98);
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

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

.game-over h2 {
    font-size: 2rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.game-over p {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #333;
}

.controls-panel {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-width: 200px;
}

.controls-panel h3 {
    color: #667eea;
    margin-bottom: 15px;
    text-align: center;
}

.controls-panel ul {
    list-style: none;
}

.controls-panel li {
    padding: 8px 0;
    color: #555;
    font-size: 0.9rem;
}

.btn {
    width: 100%;
    padding: 12px 24px;
    margin-top: 20px;
    font-size: 1rem;
    font-weight: bold;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn:active {
    transform: translateY(0);
}

@media (max-width: 900px) {
    .game-area {
        flex-direction: column;
        align-items: center;
    }

    .info-panel {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .controls-panel {
        min-width: 100%;
        text-align: center;
    }
}