.t4e-test-patterns-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}

.t4e-test-pattern {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.t4e-pattern-header {
    margin-bottom: 15px;
}

.t4e-pattern-header h3 {
    margin: 0 0 5px 0;
    color: #333;
}

.t4e-pattern-header p {
    margin: 0;
    color: #666;
    font-size: 0.9em;
}

.t4e-pattern-canvas {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    margin-bottom: 10px;
    position: relative;
}

.t4e-pattern-canvas canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.t4e-fullscreen-btn {
    background: #0073aa;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.t4e-fullscreen-btn:hover {
    background: #005177;
}

/* Fullscreen styles */
.t4e-pattern-canvas:fullscreen {
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.t4e-pattern-canvas:fullscreen canvas {
    width: 100%;
    height: 100%;
}