.kanban-board {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 32px 0;
    background: #f4f8fb;
}
.kanban-column {
    background: #e3f2fd;
    border-radius: 12px;
    min-width: 340px;
    max-width: 340px;
    padding: 16px;
    flex: 1 0 340px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.kanban-column:nth-child(-n+3) {
    background-color: #ecbf93;
}
.kanban-column:nth-child(n+4) {
    background-color: #93ecce;
}
.kanban-card {
    background: #fff;
    border-radius: 8px;
    padding: 14px 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    cursor: pointer;
    transition: box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.kanban-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.kanban-card img {
    max-width: 100%;
    max-height: 120px;
    object-fit: contain;
    border-radius: 4px;
}
.kanban-card .doc-link {
    display: inline-block;
    margin-top: 6px;
    color: #1976d2;
    font-size: 0.95em;
    text-decoration: underline;
}
.kanban-modal {
    position: fixed;
    z-index: 9999;
    left: 0; top: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}
.kanban-modal-content {
    background: #fff;
    border-radius: 10px;
    max-width: 700px;
    width: 95vw;
    max-height: 90vh;
    overflow-y: auto;
    padding: 32px 24px 24px 24px;
    position: relative;
}
.kanban-modal-close {
    position: absolute;
    top: 12px;
    right: 18px;
    font-size: 2rem;
    color: #888;
    cursor: pointer;
}
@media (max-width: 900px) {
    .kanban-board {
        flex-direction: column;
        gap: 0;
    }
    .kanban-column {
        max-width: 100vw;
        min-width: 0;
        margin-bottom: 24px;
    }
}