body {
    margin: 0;
    padding: 20px 0;
    font-family: Arial, sans-serif;
    overflow: hidden;
}

.container {
    text-align: center;
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    margin: 10px auto;
}

h1 {
    margin-bottom: 25px;
}

canvas {
    border: 2px solid #ccc;
    cursor: crosshair;
    image-rendering: pixelated;
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    max-width: 320px;
    border-radius: 8px;
}

.controls {
    margin: 25px 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: background-color 0.3s ease;
}

.clear-btn {
    background-color: #6c757d;
    color: white;
}

.clear-btn:hover {
    background-color: #545b62;
}

.predict-btn {
    background-color: #007bff;
    color: white;
}

.predict-btn:hover {
    background-color: #0056b3;
}

.predict-btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.prediction-label {
    margin: 25px 0;
    padding: 20px;
    background-color: #e7f3ff;
    border: 2px solid #007bff;
    border-radius: 10px;
    display: none;
}

.prediction-result {
    font-size: 28px;
    font-weight: bold;
    color: #007bff;
    margin-bottom: 10px;
}

.confidence {
    font-size: 18px;
    color: #666;
}