/* ===========================
   File Markup & Annotation Styles
   =========================== */

/* Variables */
:root {
    --markup-primary: #0073aa;
    --markup-secondary: #f1f1f1;
    --markup-toolbar: #ffffff;
    --markup-panel: #fafafa;
    --markup-border: #ddd;
    --markup-text: #333;
    --markup-highlight: #ffeb3b;
    --markup-red: #f44336;
    --markup-blue: #2196f3;
    --markup-green: #4caf50;
    --markup-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --markup-shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
}

/* Markup Container */
.kcp-markup-container {
    background: #fff;
    border: 1px solid var(--markup-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--markup-shadow);
}

/* Header */
.kcp-markup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--markup-secondary);
    border-bottom: 1px solid var(--markup-border);
}

.kcp-markup-header h2 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    color: var(--markup-text);
}

.kcp-markup-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* File Browser */
.kcp-file-browser {
    padding: 20px;
    min-height: 200px;
}

.kcp-file-browser h3 {
    margin: 0 0 15px 0;
    font-size: 16px;
    color: var(--markup-text);
}

.kcp-file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.kcp-file-item {
    border: 1px solid var(--markup-border);
    border-radius: 8px;
    padding: 15px;
    background: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.kcp-file-item:hover {
    border-color: var(--markup-primary);
    box-shadow: var(--markup-shadow);
    transform: translateY(-2px);
}

.kcp-file-thumbnail {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 60px;
    background: var(--markup-secondary);
    border-radius: 4px;
    margin-bottom: 10px;
    position: relative;
}

.kcp-file-thumbnail .dashicons {
    font-size: 30px;
    color: var(--markup-primary);
}

.kcp-markup-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--markup-red);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
}

.kcp-file-info {
    text-align: center;
}

.kcp-file-name {
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--markup-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kcp-file-meta {
    font-size: 12px;
    color: #666;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.kcp-no-files {
    text-align: center;
    padding: 40px;
    color: #666;
    font-style: italic;
}

/* Markup Viewer */
.kcp-markup-viewer {
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
    background: var(--markup-secondary);
}

/* Toolbar */
.kcp-markup-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: var(--markup-toolbar);
    border-bottom: 1px solid var(--markup-border);
    gap: 15px;
    flex-wrap: wrap;
    box-shadow: var(--markup-shadow);
    position: relative;
    z-index: 10;
}

.kcp-toolbar-left,
.kcp-toolbar-center,
.kcp-toolbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.kcp-toolbar-center {
    flex: 1;
    justify-content: center;
}

.kcp-file-name {
    font-weight: 500;
    color: var(--markup-text);
    margin-left: 10px;
}

/* Tool Groups */
.kcp-tool-group {
    display: flex;
    background: var(--markup-secondary);
    border-radius: 6px;
    padding: 2px;
    gap: 2px;
}

.kcp-tool {
    padding: 8px 10px;
    border: none;
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kcp-tool:hover {
    background: rgba(0, 115, 170, 0.1);
    color: var(--markup-primary);
}

.kcp-tool.active {
    background: var(--markup-primary);
    color: white;
}

.kcp-tool .dashicons {
    font-size: 16px;
}

/* Tool Options */
.kcp-tool-options {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 10px;
    border-left: 1px solid var(--markup-border);
    border-right: 1px solid var(--markup-border);
}

#kcp-color-picker {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#kcp-stroke-width {
    width: 80px;
}

#kcp-font-size {
    padding: 4px 8px;
    border: 1px solid var(--markup-border);
    border-radius: 4px;
    background: white;
}

#kcp-zoom-level {
    min-width: 50px;
    text-align: center;
    font-weight: 500;
    color: var(--markup-text);
}

/* Viewer Container */
.kcp-viewer-container {
    flex: 1;
    display: flex;
    position: relative;
    overflow: hidden;
}

.kcp-canvas-container {
    flex: 1;
    position: relative;
    overflow: auto;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

#kcp-markup-canvas,
#kcp-drawing-canvas {
    position: absolute;
    border: 1px solid var(--markup-border);
    background: white;
    box-shadow: var(--markup-shadow-lg);
    border-radius: 4px;
}

#kcp-drawing-canvas {
    pointer-events: none;
    z-index: 2;
}

#kcp-markup-canvas {
    z-index: 1;
}

/* Annotations Panel */
.kcp-annotations-panel {
    width: 300px;
    background: var(--markup-panel);
    border-left: 1px solid var(--markup-border);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
}

.kcp-annotations-panel.collapsed {
    transform: translateX(100%);
}

.kcp-panel-header {
    padding: 15px;
    border-bottom: 1px solid var(--markup-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
}

.kcp-panel-header h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--markup-text);
}

#kcp-toggle-panel {
    background: none;
    border: none;
    padding: 5px;
    cursor: pointer;
    color: #666;
    transition: color 0.2s ease;
}

#kcp-toggle-panel:hover {
    color: var(--markup-primary);
}

.kcp-panel-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.kcp-annotations-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.kcp-annotation-item {
    background: white;
    border: 1px solid var(--markup-border);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 10px;
    transition: border-color 0.2s ease;
}

.kcp-annotation-item:hover {
    border-color: var(--markup-primary);
}

.kcp-annotation-item.resolved {
    opacity: 0.6;
    background: #f8f8f8;
}

.kcp-annotation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.kcp-annotation-user {
    font-size: 12px;
    font-weight: 500;
    color: var(--markup-primary);
}

.kcp-annotation-date {
    font-size: 11px;
    color: #666;
}

.kcp-annotation-content {
    font-size: 13px;
    line-height: 1.4;
    color: var(--markup-text);
    margin-bottom: 8px;
}

.kcp-annotation-actions {
    display: flex;
    gap: 5px;
}

.kcp-annotation-actions button {
    padding: 2px 6px;
    font-size: 11px;
    border: 1px solid var(--markup-border);
    background: white;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.kcp-annotation-actions button:hover {
    background: var(--markup-secondary);
}

.kcp-panel-actions {
    padding: 15px;
    border-top: 1px solid var(--markup-border);
    background: white;
    display: flex;
    gap: 10px;
}

.kcp-panel-actions button {
    flex: 1;
    padding: 8px 12px;
    font-size: 12px;
}

/* Page Navigation */
.kcp-page-navigation {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border: 1px solid var(--markup-border);
    border-radius: 20px;
    padding: 8px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--markup-shadow);
    z-index: 5;
}

#kcp-page-info {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: var(--markup-text);
}

#kcp-current-page {
    width: 50px;
    text-align: center;
    border: 1px solid var(--markup-border);
    border-radius: 4px;
    padding: 2px 4px;
}

/* Loading States */
.kcp-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.kcp-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--markup-border);
    border-top-color: var(--markup-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Drawing Cursors */
.kcp-canvas-container.drawing-mode {
    cursor: crosshair;
}

.kcp-canvas-container.text-mode {
    cursor: text;
}

.kcp-canvas-container.select-mode {
    cursor: default;
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .kcp-annotations-panel {
        width: 250px;
    }
    
    .kcp-file-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media screen and (max-width: 768px) {
    .kcp-markup-viewer {
        height: calc(100vh - 150px);
    }
    
    .kcp-markup-toolbar {
        flex-direction: column;
        gap: 10px;
        padding: 15px;
    }
    
    .kcp-toolbar-left,
    .kcp-toolbar-center,
    .kcp-toolbar-right {
        width: 100%;
        justify-content: center;
    }
    
    .kcp-toolbar-center {
        order: -1;
    }
    
    .kcp-tool-group {
        flex-wrap: wrap;
    }
    
    .kcp-annotations-panel {
        position: absolute;
        top: 0;
        right: 0;
        height: 100%;
        z-index: 100;
        box-shadow: var(--markup-shadow-lg);
    }
    
    .kcp-annotations-panel.collapsed {
        transform: translateX(100%);
    }
    
    .kcp-viewer-container {
        flex-direction: column;
    }
    
    .kcp-file-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }
    
    .kcp-file-item {
        padding: 10px;
    }
    
    .kcp-file-thumbnail {
        height: 50px;
    }
    
    .kcp-file-thumbnail .dashicons {
        font-size: 24px;
    }
}

@media screen and (max-width: 480px) {
    .kcp-markup-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .kcp-markup-actions {
        width: 100%;
        justify-content: center;
    }
    
    .kcp-tool-options {
        flex-wrap: wrap;
        border: none;
        padding: 5px 0;
    }
    
    .kcp-page-navigation {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin: 10px;
        align-self: center;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --markup-toolbar: #2c2c2c;
        --markup-panel: #252525;
        --markup-border: #444;
        --markup-text: #e0e0e0;
        --markup-secondary: #1e1e1e;
    }
    
    .kcp-canvas-container {
        background: #1a1a1a;
    }
    
    #kcp-markup-canvas,
    #kcp-drawing-canvas {
        background: #ffffff;
    }
}

/* Print Styles */
@media print {
    .kcp-markup-toolbar,
    .kcp-annotations-panel,
    .kcp-page-navigation {
        display: none !important;
    }
    
    .kcp-viewer-container {
        overflow: visible !important;
    }
    
    .kcp-canvas-container {
        overflow: visible !important;
        display: block !important;
    }
}

/* ==========================================================================
   Enhanced Collaboration Features
   ========================================================================== */

/* Collaboration Status */
.kcp-collaboration-status {
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    margin-bottom: 15px;
    border-left: 4px solid var(--kcp-primary);
}

.kcp-status-label {
    font-size: 12px;
    font-weight: 600;
    color: #666;
    display: block;
    margin-bottom: 8px;
}

.kcp-users-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.kcp-user-avatar {
    position: relative;
    display: inline-block;
}

.kcp-user-avatar img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.kcp-user-avatar.online::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 8px;
    height: 8px;
    background: #4caf50;
    border: 1px solid #fff;
    border-radius: 50%;
}

/* Markup Filters */
.kcp-markup-filters {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    padding: 10px;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
}

.kcp-small-select {
    flex: 1;
    min-width: 120px;
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 12px;
}

#kcp-admin-mode {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: white;
    border: none;
    padding: 6px 12px;
    font-size: 12px;
}

#kcp-admin-mode:hover {
    background: linear-gradient(135deg, #ff5722 0%, #ff9800 100%);
    transform: translateY(-1px);
}

#kcp-admin-mode.active {
    background: linear-gradient(135deg, #4caf50 0%, #2e7d32 100%);
}

/* Enhanced Annotations List */
.kcp-annotations-list {
    max-height: 400px;
    overflow-y: auto;
}

.kcp-annotation-item {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    margin-bottom: 10px;
    overflow: hidden;
    transition: all 0.2s ease;
}

.kcp-annotation-item:hover {
    border-color: var(--kcp-primary);
    box-shadow: 0 2px 8px rgba(72, 147, 175, 0.1);
}

.kcp-annotation-item.resolved {
    opacity: 0.7;
    background: #f5f5f5;
}

.kcp-annotation-header {
    padding: 12px 15px;
    background: #f8f9fa;
    border-bottom: 1px solid #e5e5e5;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.kcp-annotation-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #333;
}

.kcp-annotation-user img {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

.kcp-annotation-meta {
    font-size: 11px;
    color: #999;
}

.kcp-annotation-actions {
    display: flex;
    gap: 5px;
}

.kcp-annotation-btn {
    background: none;
    border: none;
    padding: 4px 8px;
    border-radius: 3px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.kcp-annotation-btn:hover {
    background: #e9ecef;
}

.kcp-annotation-btn.resolve {
    color: #4caf50;
}

.kcp-annotation-btn.comment {
    color: var(--kcp-primary);
}

.kcp-annotation-btn.delete {
    color: #f44336;
}

.kcp-annotation-content {
    padding: 15px;
}

.kcp-annotation-text {
    font-size: 13px;
    line-height: 1.4;
    color: #333;
    margin-bottom: 10px;
}

/* Comments Thread */
.kcp-comments-thread {
    border-top: 1px solid #e5e5e5;
    padding-top: 10px;
    margin-top: 10px;
}

.kcp-comment-item {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    padding: 8px;
    background: #f8f9fa;
    border-radius: 4px;
}

.kcp-comment-avatar img {
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

.kcp-comment-content {
    flex: 1;
    font-size: 12px;
}

.kcp-comment-author {
    font-weight: 600;
    color: #333;
    margin-bottom: 2px;
}

.kcp-comment-text {
    color: #666;
    line-height: 1.3;
}

.kcp-comment-time {
    font-size: 10px;
    color: #999;
    margin-top: 2px;
}

/* Quick Comment Input */
.kcp-quick-comment {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.kcp-quick-comment textarea {
    width: 100%;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 13px;
    resize: vertical;
    margin-bottom: 10px;
    font-family: inherit;
}

.kcp-quick-comment textarea:focus {
    outline: none;
    border-color: var(--kcp-primary);
    box-shadow: 0 0 0 2px rgba(72, 147, 175, 0.1);
}

.kcp-comment-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.kcp-comment-actions .button-small {
    padding: 6px 12px;
    font-size: 12px;
    line-height: 1.2;
}

/* Resolved State Indicators */
.kcp-resolved-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: #4caf50;
    background: #e8f5e8;
    padding: 2px 8px;
    border-radius: 12px;
}

.kcp-resolved-indicator .dashicons {
    font-size: 12px;
}

/* Admin Review Mode */
.kcp-admin-review-mode .kcp-annotation-item {
    border-left: 4px solid #ff6b35;
}

.kcp-admin-review-mode .kcp-annotation-header {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(247, 147, 30, 0.1) 100%);
}

/* Export Review Features */
.kcp-export-options {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    padding: 15px;
    margin-top: 15px;
}

.kcp-export-format {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.kcp-export-format label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    cursor: pointer;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .kcp-markup-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .kcp-users-list {
        justify-content: center;
    }
    
    .kcp-annotation-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .kcp-annotation-actions {
        align-self: flex-end;
    }
    
    .kcp-comment-actions {
        flex-direction: column;
    }
    
    .kcp-comment-actions .button-small {
        width: 100%;
        text-align: center;
    }
}