body {
            background-color: #f4f7f9;
            padding-top: 20px;
        }
        #app-container {
            max-width: 100%;
            padding: 0 15px;
        }
        header {
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #dee2e6;
        }
        #board-container {
            display: flex;
            flex-direction: row;
            overflow-x: auto;
            gap: 15px;
            padding: 15px 0;
            min-height: 70vh;
        }
        .column {
            background-color: #e9ecef;
            border-radius: 0.375rem;
            padding: 15px;
            min-width: 300px;
            max-width: 320px;
            flex-shrink: 0;
            height: fit-content;
        }
        .column h5 {
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 15px;
            color: #343a40;
        }
        .tasks-container {
            min-height: 100px;
            margin-bottom: 15px;
            border: 2px dashed transparent; /* Para feedback visual al arrastrar */
            transition: border-color 0.2s ease-in-out;
        }
        .tasks-container.drag-over {
            border-color: #0d6efd; /* Color de borde al arrastrar sobre la columna */
        }
        .task-card {
            background-color: #fff;
            border: 1px solid #ddd;
            border-radius: 0.25rem;
            padding: 10px 12px;
            margin-bottom: 10px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
            cursor: grab; /* Indica que es arrastrable */
        }
        .task-card.dragging {
            opacity: 0.5;
            border: 1px dashed #000;
        }
        .task-card h6 {
            font-size: 0.95rem;
            margin-bottom: 5px;
        }
        .task-card p {
            font-size: 0.85rem;
            color: #6c757d;
            margin-bottom: 8px;
            white-space: pre-wrap;
        }
        .task-card .task-meta {
            font-size: 0.75rem;
            color: #888;
        }
        .task-actions button {
            padding: 0.1rem 0.4rem;
            font-size: 0.7rem;
        }