.kpb-frontend-board {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.kpb-frontend-board .kpb-board-columns {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
}

.kpb-frontend-board .kpb-board-column {
    flex: 0 0 280px;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    min-height: 400px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.kpb-frontend-board .kpb-column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #dee2e6;
}

.kpb-frontend-board .kpb-column-header h3 {
    margin: 0;
    font-size: 16px;
    color: #495057;
    font-weight: 600;
}

.kpb-frontend-board .kpb-card-count {
    background: #6c757d;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    min-width: 20px;
    text-align: center;
}

.kpb-frontend-board .kpb-card {
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 10px;
    cursor: move;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.kpb-frontend-board .kpb-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transform: translateY(-1px);
}

.kpb-frontend-board .kpb-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.kpb-frontend-board .kpb-card-header h4 {
    margin: 0;
    font-size: 14px;
    color: #212529;
    flex: 1;
    font-weight: 600;
}

.kpb-frontend-board .kpb-card-description {
    font-size: 12px;
    color: #6c757d;
    margin-bottom: 8px;
    line-height: 1.4;
}

.kpb-frontend-board .kpb-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 11px;
}

.kpb-frontend-board .kpb-card-meta span {
    background: #e9ecef;
    padding: 2px 6px;
    border-radius: 3px;
    color: #495057;
}

.kpb-frontend-board .kpb-priority-low {
    background: #d1ecf1 !important;
    color: #0c5460 !important;
}

.kpb-frontend-board .kpb-priority-medium {
    background: #ffeaa7 !important;
    color: #856404 !important;
}

.kpb-frontend-board .kpb-priority-high {
    background: #f8d7da !important;
    color: #721c24 !important;
}

.kpb-frontend-board .kpb-assignee {
    background: #d4edda !important;
    color: #155724 !important;
}

.kpb-frontend-board .kpb-due-date {
    background: #cce5ff !important;
    color: #004085 !important;
}

.kpb-frontend-board .kpb-card-placeholder {
    background: #f8f9fa;
    border: 2px dashed #adb5bd;
    height: 80px;
    margin-bottom: 10px;
    border-radius: 6px;
    opacity: 0.7;
}

.kpb-project-selector {
    margin-bottom: 20px;
    padding: 15px;
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 6px;
}

.kpb-project-selector label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #495057;
}

.kpb-project-selector select {
    width: 100%;
    max-width: 300px;
    padding: 8px 12px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 14px;
}

.kpb-loading {
    text-align: center;
    padding: 40px;
    color: #6c757d;
}

.kpb-error {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
    margin-bottom: 20px;
}

.kpb-no-access {
    text-align: center;
    padding: 40px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    color: #6c757d;
}

/* WordPress 6.8.2 Speculative Loading Optimization */
.kpb-frontend-board a:not(.no-prefetch) {
    /* Allow speculative loading for navigation links */
}

.kpb-frontend-board .kpb-card,
.kpb-frontend-board .kpb-add-card-btn,
.kpb-frontend-board .kpb-card-actions button {
    /* Prevent speculative loading on dynamic actions */
    pointer-events: auto;
}

/* Enhanced Modal Styles for Frontend */
.kpb-frontend-board .kpb-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(2px);
}

.kpb-frontend-board .kpb-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.3);
}

.kpb-frontend-board .kpb-modal-content {
    background-color: #fff;
    margin: 3% auto;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: modalSlideIn 0.3s ease-out;
    max-height: 90vh;
    overflow-y: auto;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.kpb-frontend-board .kpb-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 24px 16px;
    border-bottom: 1px solid #e0e0e0;
}

.kpb-frontend-board .kpb-modal-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: #333;
}

.kpb-frontend-board .kpb-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.kpb-frontend-board .kpb-modal-close:hover {
    color: #333;
    background-color: #f5f5f5;
}

.kpb-frontend-board .kpb-form-group {
    margin-bottom: 20px;
    padding: 0 24px;
}

.kpb-frontend-board .kpb-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
    font-size: 14px;
}

.kpb-frontend-board .kpb-form-group .required {
    color: #d63384;
}

.kpb-frontend-board .kpb-form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.kpb-frontend-board .kpb-form-control:focus {
    outline: none;
    border-color: #0073aa;
    box-shadow: 0 0 0 3px rgba(0,115,170,0.1);
}

.kpb-frontend-board .kpb-form-control::placeholder {
    color: #aaa;
}

.kpb-frontend-board .kpb-form-row {
    display: flex;
    gap: 16px;
    padding: 0 24px;
    margin-bottom: 20px;
}

.kpb-frontend-board .kpb-form-row .kpb-form-group {
    flex: 1;
    margin-bottom: 0;
    padding: 0;
}

.kpb-frontend-board .kpb-modal-footer {
    padding: 16px 24px 24px;
    border-top: 1px solid #e0e0e0;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.kpb-frontend-board .kpb-btn-save {
    background: #0073aa;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 120px;
    justify-content: center;
}

.kpb-frontend-board .kpb-btn-save:hover:not(:disabled) {
    background: #005a87;
    transform: translateY(-1px);
}

.kpb-frontend-board .kpb-btn-save:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.kpb-frontend-board .kpb-btn-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.kpb-update-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #4CAF50;
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    z-index: 10001;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    display: none;
}

@media (max-width: 768px) {
    .kpb-frontend-board .kpb-board-columns {
        flex-direction: column;
    }
    
    .kpb-frontend-board .kpb-board-column {
        flex: none;
        width: 100%;
    }
    
    .kpb-project-selector select {
        width: 100%;
    }
    
    .kpb-frontend-board .kpb-modal-content {
        width: 95%;
        margin: 5% auto;
        max-height: 85vh;
    }
    
    .kpb-frontend-board .kpb-modal-header {
        padding: 20px 16px 12px;
    }
    
    .kpb-frontend-board .kpb-modal-header h2 {
        font-size: 18px;
    }
    
    .kpb-frontend-board .kpb-form-group {
        padding: 0 16px;
    }
    
    .kpb-frontend-board .kpb-form-row {
        flex-direction: column;
        padding: 0 16px;
    }
    
    .kpb-frontend-board .kpb-modal-footer {
        padding: 12px 16px 20px;
        flex-direction: column;
    }
    
    .kpb-frontend-board .kpb-btn-save {
        order: 1;
        margin-bottom: 8px;
    }
    
    .kpb-update-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        width: auto;
    }
}

/* Card Permission Styles */
.kpb-card-readonly {
    opacity: 0.7;
    cursor: default;
    border-left: 4px solid #ddd;
}

.kpb-card-readonly:hover {
    transform: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.kpb-card-readonly .kpb-card-header h4 {
    color: #666;
}

.kpb-card-editable {
    border-left: 4px solid #0073aa;
}

.kpb-card-moveable {
    cursor: move;
}

.kpb-card-moveable:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

/* Visual indicator for assigned cards */
.kpb-card-readonly .kpb-assignee {
    font-weight: bold;
    color: #0073aa;
}

/* WIP Limit Visual Indicators */
.kpb-frontend-board .kpb-board-column.wip-near-limit {
    border-top: 3px solid #ff9800;
}

.kpb-frontend-board .kpb-board-column.wip-at-limit {
    border-top: 3px solid #f44336;
    background-color: #ffebee;
}

.kpb-frontend-board .kpb-card-count.wip-near-limit {
    background-color: #ff9800;
    color: white;
    font-weight: bold;
}

.kpb-frontend-board .kpb-card-count.wip-at-limit {
    background-color: #f44336;
    color: white;
    font-weight: bold;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.kpb-frontend-board .kpb-wip-warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 8px 12px;
    border-radius: 4px;
    margin: 5px 0;
    font-size: 12px;
}

.kpb-frontend-board .kpb-wip-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
    padding: 8px 12px;
    border-radius: 4px;
    margin: 5px 0;
    font-size: 12px;
}

/* Frontend Comments Styles */
.kpb-frontend-board .kpb-comments-container {
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: #f9f9f9;
    max-height: 300px;
    overflow-y: auto;
}

.kpb-frontend-board .kpb-comments-list {
    max-height: 200px;
    overflow-y: auto;
    padding: 12px;
    background: white;
    border-bottom: 1px solid #e0e0e0;
}

.kpb-frontend-board .kpb-comment {
    border-bottom: 1px solid #f0f0f0;
    padding: 10px 0;
    margin-bottom: 10px;
}

.kpb-frontend-board .kpb-comment:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.kpb-frontend-board .kpb-comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.kpb-frontend-board .kpb-comment-header strong {
    color: #333;
    font-size: 13px;
}

.kpb-frontend-board .kpb-comment-date {
    font-size: 11px;
    color: #888;
}

.kpb-frontend-board .kpb-comment-text {
    font-size: 13px;
    color: #555;
    line-height: 1.4;
    margin-bottom: 6px;
    word-wrap: break-word;
}

.kpb-frontend-board .kpb-comment-actions {
    display: flex;
    gap: 8px;
}

.kpb-frontend-board .kpb-comment-actions .button-link {
    background: none;
    border: none;
    color: #0073aa;
    text-decoration: underline;
    cursor: pointer;
    font-size: 11px;
    padding: 0;
}

.kpb-frontend-board .kpb-comment-actions .button-link:hover {
    color: #005a87;
}

.kpb-frontend-board .kpb-add-comment {
    padding: 12px;
    background: #f9f9f9;
}

.kpb-frontend-board .kpb-add-comment textarea {
    margin-bottom: 8px;
    resize: vertical;
    min-height: 60px;
}

.kpb-frontend-board .kpb-add-comment button {
    background: #0073aa;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.kpb-frontend-board .kpb-add-comment button:hover {
    background: #005a87;
}

.kpb-frontend-board .kpb-no-comments {
    text-align: center;
    color: #888;
    font-style: italic;
    padding: 20px;
    font-size: 13px;
}