body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2c3e50 0%, #4a6491 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 20px;
}

.container {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    text-align: center;
    max-width: 500px;
    width: 100%;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 28px;
}

#board {
    width: 400px;
    height: 400px;
    margin: 0 auto 20px auto;
    border: 3px solid #333;
    border-radius: 5px;
}

.controls {
    margin: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

button, select {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

button {
    background: #3498db;
    color: white;
    min-width: 100px;
}

button:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

select {
    background: #ecf0f1;
    border: 2px solid #bdc3c7;
    min-width: 120px;
}

select:hover {
    border-color: #3498db;
}

.info {
    margin-top: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: left;
    border-left: 4px solid #3498db;
}

.info p {
    margin: 8px 0;
    color: #2c3e50;
    font-size: 14px;
}

#status {
    font-weight: bold;
    color: #e74c3c;
}

#fen {
    font-family: monospace;
    font-size: 12px;
    word-break: break-all;
    color: #7f8c8d;
}