body {
    font-family: sans-serif;
    padding: 40px;
    background: #fafafa;
}

h1 {
    margin-bottom: 20px;
}

#counter {
    font-size: 2em;
    font-weight: bold;
    display: inline-block;
    margin: 20px 0;
}

button {
    padding: 10px 20px;
    margin: 0 5px;
    font-size: 1.2em;
    cursor: pointer;
    background: white;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button:hover {
    background: #f0f0f0;
}

table {
    width: 60%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

table thead {
    background: #4a90e2;
    color: white;
}

table th,
table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid #ddd;
}

table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9em;
    letter-spacing: 0.5px;
}

table tbody tr:nth-child(even) {
    background: #f8f9fa;
}

table tbody tr:hover {
    background: #e3f2fd;
}

.indicator {
    visibility: hidden;
}

.indicator.loading {
    visibility: visible;
}

.hidden {
    display: none;
}

.demo-description {
    margin: 1.5rem 0;
    padding: 1.25rem 1.5rem;
    border-left: 4px solid #4a90d9;
    background-color: #f8f9fa;
    border-radius: 0 6px 6px 0;
}

.demo-description h2 {
    margin: 0 0 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
}

.demo-description ol {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
    line-height: 2;
}

.demo-description li {
    margin-bottom: 0.25rem;
    color: #444;
}

.demo-description strong {
    color: #2c3e50;
    font-weight: 600;
}

.demo-description code {
    font-family: monospace;
    font-size: 0.85rem;
    background-color: #e8ecf0;
    padding: 1px 5px;
    border-radius: 4px;
    color: #c0392b;
}

.demo-description p {
    margin: 0 0 0.75rem;
    color: #444;
    line-height: 1.6;
}