#pid-container {
    font-family: Arial, sans-serif;
    max-width: 800px;
    margin: 20px auto;
    text-align: center;
    background: rgba(255, 255, 255, 0.1); /* Slight transparency */
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.3);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.2); /* Subtle transparency */
    border-radius: 10px;
    text-align: center;
}

.controls label {
    font-weight: bold;
    color: #FFD700; /* Gold text for consistency */
}

.controls input {
    width: 70px;
    padding: 8px;
    font-size: 16px;
    text-align: center;
    border-radius: 5px;
    border: 1px solid #ccc;
    background: #f8f9fa;
    color: #333;
}

button#pid-start-btn {
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 10px 15px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

button#pid-start-btn:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

/* PID Graph Styling */
canvas {
    max-width: 100%;
    margin-top: 20px;
    background: #ffffff;
    border-radius: 5px;
    border: 1px solid #ccc;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.2);
}

/* Wikipedia Link Styling */
.learn-more-link {
    color: #FFD700;
    text-decoration: none;
    font-weight: bold;
}

.learn-more-link:hover {
    text-decoration: underline;
    color: #FF8C00;
}