body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    text-align: center;
    padding: 1rem;
    background-color: #4a90e2;
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0.2rem 0;
    font-size: 2rem;
}

header p {
    margin: 0;
    font-size: 1rem;
    font-weight: 300;
}

main {
    flex: 1;
    display: flex;
    padding: 1rem;
    gap: 1rem;
}

.half {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 1rem;
    background-color: white;
    border-radius: 10px;
    padding: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

textarea {
    width: 90%;
    height: 60%;
    font-size: 1rem;
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid #ccc;
    resize: none;
    font-family: monospace;
    background-color: #fefefe;
}

button {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    background-color: #4a90e2;
    color: white;
    cursor: pointer;
    transition: background 0.2s ease;
}

button:hover {
    background-color: #357ab8;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

canvas {
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #fff;
}

.instructions {
    font-size: 0.9rem;
    color: #555;
    text-align: center;
    padding: 0 0.5rem;
}