/* Common Styles for Demos */

:root {
    --color-red: #e74c3c;
    --color-green: #2ecc71;
    --color-blue: #3498db;
    --color-gray: #95a5a6;
    --color-dark: #2c3e50;
    --color-light: #ecf0f1;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 20px;
    background-color: #f8f9fa;
    color: var(--color-dark);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

h2 {
    text-align: center;
    margin-top: 0;
    color: var(--color-dark);
}

.controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 20px 0;
    padding: 15px;
    background: var(--color-light);
    border-radius: 6px;
    align-items: center;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

label {
    font-weight: 600;
}

input[type="number"] {
    padding: 6px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 70px;
}

button {
    padding: 8px 16px;
    background-color: var(--color-blue);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
}

button:hover {
    background-color: #2980b9;
}

.visualization-area {
    margin-top: 20px;
    position: relative;
    min-height: 400px;
    border: 1px solid #eee;
    border-radius: 4px;
    overflow: hidden;
    background: white;
}

.feedback-panel {
    margin-top: 20px;
    padding: 15px;
    background: #e8f6f3;
    border-left: 4px solid var(--color-green);
    border-radius: 4px;
}

.feedback-panel h4 {
    margin: 0 0 10px 0;
    color: var(--color-dark);
}