/**
 * Collaboration System Styles
 *
 * Styling for all collaboration components:
 * - Collaboration panels (tabbed interface)
 * - Comments (threaded discussions)
 * - Tasks (cards, lists, forms)
 * - Members (cards, forms)
 * - Versions (history, restore)
 * - Sidebar (compact widget)
 * - Badges and indicators
 *
 * Design Principles:
 * - NO emojis, NO icon fonts, NO gradients, NO images
 * - Uses CSS variables for theming
 * - Clean, minimalist layouts
 * - Mobile-friendly responsive design
 * - Consistent with BPRboard design system
 *
 * @author BPRboard Development Team
 * @version 1.0.0
 * @date 2024-11-10
 */

/* 
   TOOL WITH COLLABORATION LAYOUT (Two-Column)
    */

.tool-with-collab-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 16px;
    height: 100%;
    overflow: hidden;
}

.tool-main-area {
    overflow-y: auto;
    min-height: 0;
}

.tool-collab-sidebar {
    overflow-y: auto;
    min-height: 0;
}

@media (max-width: 1024px) {
    .tool-with-collab-layout {
        grid-template-columns: 1fr 250px;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .tool-with-collab-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .tool-collab-sidebar {
        order: -1; /* Show sidebar above main content on mobile */
    }
}

/* 
   COLLABORATION PANEL
    */

.collab-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Tab Navigation */
.collab-tabs {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.collab-tab {
    flex: 1;
    min-width: 100px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.collab-tab:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.collab-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background: var(--bg-card);
}

.collab-badge {
    display: inline-block;
    min-width: 20px;
    padding: 2px 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    border-radius: 10px;
    text-align: center;
}

.collab-tab.active .collab-badge {
    background: var(--accent-primary);
    color: var(--text-on-primary);
}

/* Tab Content */
.collab-tab-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.collab-tab-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* 
   EMPTY STATE
    */

.collab-empty-state {
    text-align: center;
    padding: 48px 24px;
}

.collab-empty-message {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.collab-hint {
    font-size: 14px;
    color: var(--text-muted);
    margin: 8px 0;
}

/* 
   COMMENTS
    */

.collab-comments-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.collab-comments-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.collab-comment {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    transition: border-color 0.2s ease;
}

.collab-comment:hover {
    border-color: var(--border-accent);
}

.collab-comment-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.collab-comment-author {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.collab-comment-role {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
}

.collab-comment-time {
    font-size: 12px;
    color: var(--text-muted);
    margin-left: auto;
}

.collab-comment-edited {
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
}

.collab-comment-body {
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.collab-comment-actions {
    display: flex;
    gap: 12px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.collab-comment-action {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.collab-comment-action:hover {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
}

.collab-comment-action.collab-danger:hover {
    color: var(--error);
}

/* Comment Input */
.collab-comment-input {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
}

.collab-textarea {
    width: 100%;
    min-height: 80px;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s ease;
}

.collab-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.collab-textarea::placeholder {
    color: var(--text-muted);
}

.collab-input-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

/* 
   BUTTONS
    */

.collab-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.collab-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-accent);
}

.collab-btn-primary {
    background: var(--accent-primary);
    color: var(--text-on-primary);
    border-color: var(--accent-primary);
}

.collab-btn-primary:hover {
    background: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
}

.collab-btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

.collab-btn-secondary:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.collab-btn-block {
    width: 100%;
}

.collab-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 
   TASKS
    */

.collab-tasks-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Task Filters */
.collab-task-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.collab-filter-btn {
    padding: 6px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collab-filter-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.collab-filter-btn.active {
    background: var(--accent-primary);
    color: var(--text-on-primary);
    border-color: var(--accent-primary);
}

/* New Task Button */
.collab-new-task-btn {
    align-self: flex-start;
}

/* Tasks List */
.collab-tasks-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Task Card */
.collab-task {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    transition: all 0.2s ease;
}

.collab-task:hover {
    border-left-color: var(--accent-primary);
    box-shadow: 0 2px 8px var(--shadow-sm);
}

.collab-task.collab-status-completed {
    opacity: 0.7;
}

.collab-task-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.collab-task-priority {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.collab-priority-low {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.collab-priority-medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.collab-priority-high {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.collab-task-status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    text-transform: capitalize;
}

.collab-task-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.collab-task-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.collab-task-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.collab-task-assigned {
    color: var(--text-secondary);
}

.collab-task-due {
    color: var(--text-muted);
}

.collab-task-due.collab-overdue {
    color: var(--error);
    font-weight: 500;
}

/* Task Checklist */
.collab-task-checklist {
    background: var(--bg-tertiary);
    border-radius: 4px;
    padding: 12px;
    margin-bottom: 12px;
}

.collab-checklist-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}

.collab-checklist-item input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

.collab-task-actions {
    display: flex;
    gap: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.collab-task-action {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collab-task-action:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.collab-task-action.collab-danger:hover {
    color: var(--error);
    border-color: var(--error);
}

/* Task Form */
.collab-task-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
}

.collab-task-form h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* 
   FORMS
    */

.collab-form-group {
    margin-bottom: 16px;
}

.collab-form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.collab-input,
.collab-select {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.collab-input:focus,
.collab-select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.collab-input::placeholder {
    color: var(--text-muted);
}

.collab-select {
    cursor: pointer;
}

.collab-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.collab-form-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

/* 
   MEMBERS
    */

.collab-members-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.collab-add-member-btn {
    align-self: flex-start;
}

.collab-members-section {
    margin-bottom: 16px;
}

.collab-members-section h4 {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.collab-members-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Member Card */
.collab-member {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    transition: border-color 0.2s ease;
}

.collab-member:hover {
    border-color: var(--border-accent);
}

.collab-member-info {
    flex: 1;
}

.collab-member-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.collab-member-email {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.collab-member-role-badge {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
}

.collab-member-role-badge.collab-owner-badge {
    background: var(--accent-primary);
    color: var(--text-on-primary);
}

.collab-member-actions {
    display: flex;
    gap: 8px;
    margin-left: 16px;
}

.collab-member-action {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.collab-member-action:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.collab-member-action.collab-danger:hover {
    color: var(--error);
    border-color: var(--error);
}

/* Member Form */
.collab-member-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
}

.collab-member-form h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* 
   VERSIONS
    */

.collab-versions-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.collab-versions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Version Entry */
.collab-version {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    transition: border-color 0.2s ease;
}

.collab-version:hover {
    border-color: var(--border-accent);
}

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

.collab-version-number {
    font-weight: 600;
    color: var(--accent-primary);
    font-size: 14px;
}

.collab-version-time {
    font-size: 12px;
    color: var(--text-muted);
}

.collab-version-info {
    margin-bottom: 12px;
}

.collab-version-author {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.collab-version-message {
    font-size: 13px;
    color: var(--text-primary);
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    margin-top: 8px;
}

.collab-version-actions {
    display: flex;
    gap: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.collab-version-action {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collab-version-action:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* 
   SIDEBAR (Compact Widget)
    */

.collab-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.collab-sidebar-header {
    margin-bottom: 16px;
}

.collab-sidebar-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.collab-sidebar-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.collab-stat {
    text-align: center;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.collab-stat:hover {
    border-color: var(--border-accent);
    background: var(--bg-tertiary);
}

.collab-stat-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.collab-stat-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.collab-sidebar-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 
   BADGES & INDICATORS
    */

.collab-notification-badge {
    display: inline-block;
    min-width: 18px;
    padding: 2px 6px;
    background: var(--error);
    color: white;
    font-size: 11px;
    font-weight: 700;
    border-radius: 9px;
    text-align: center;
    line-height: 1;
}

.collab-status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.collab-status-active,
.collab-status-online {
    background: var(--success);
}

.collab-status-inactive,
.collab-status-offline {
    background: var(--text-muted);
}

.collab-role-badge {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
}

/* 
   UTILITY CLASSES
    */

.collab-danger {
    color: var(--error) !important;
}

.collab-success {
    color: var(--success) !important;
}

.collab-warning {
    color: var(--warning) !important;
}

.collab-info {
    color: var(--info) !important;
}

/* 
   RESPONSIVE DESIGN
    */

@media (max-width: 768px) {
    /* Tabs scroll on mobile */
    .collab-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .collab-tab {
        min-width: 80px;
        font-size: 12px;
        padding: 10px 12px;
    }

    /* Stack form rows on mobile */
    .collab-form-row {
        grid-template-columns: 1fr;
    }

    /* Sidebar stats vertical on mobile */
    .collab-sidebar-stats {
        grid-template-columns: 1fr;
    }

    /* Member actions stack on mobile */
    .collab-member {
        flex-direction: column;
        align-items: flex-start;
    }

    .collab-member-actions {
        margin-left: 0;
        margin-top: 12px;
        width: 100%;
    }

    .collab-member-action {
        flex: 1;
    }

    /* Task filters wrap on mobile */
    .collab-task-filters {
        gap: 6px;
    }

    .collab-filter-btn {
        font-size: 11px;
        padding: 5px 10px;
    }

    /* Comment actions wrap on mobile */
    .collab-comment-actions {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    /* Smaller padding on very small screens */
    .collab-panel {
        border-radius: 0;
    }

    .collab-tab-container {
        padding: 12px;
    }

    .collab-task,
    .collab-comment,
    .collab-member,
    .collab-version {
        padding: 12px;
    }

    .collab-sidebar {
        padding: 12px;
    }

    /* Smaller fonts on mobile */
    .collab-task-title {
        font-size: 15px;
    }

    .collab-comment-body {
        font-size: 13px;
    }
}

/* 
   SCROLLBAR STYLING (Optional - matches BPRboard style)
    */

.collab-tab-container::-webkit-scrollbar,
.collab-comments-list::-webkit-scrollbar,
.collab-tasks-list::-webkit-scrollbar {
    width: 8px;
}

.collab-tab-container::-webkit-scrollbar-track,
.collab-comments-list::-webkit-scrollbar-track,
.collab-tasks-list::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.collab-tab-container::-webkit-scrollbar-thumb,
.collab-comments-list::-webkit-scrollbar-thumb,
.collab-tasks-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.collab-tab-container::-webkit-scrollbar-thumb:hover,
.collab-comments-list::-webkit-scrollbar-thumb:hover,
.collab-tasks-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 
   ANIMATIONS
    */

@keyframes collab-fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.collab-comment,
.collab-task,
.collab-member,
.collab-version {
    animation: collab-fade-in 0.3s ease;
}

/* 
   LIGHT THEME ADJUSTMENTS
    */

body.light-theme .collab-panel,
body.light-theme .collab-sidebar {
    box-shadow: 0 1px 3px var(--shadow-sm);
}

body.light-theme .collab-task:hover,
body.light-theme .collab-comment:hover,
body.light-theme .collab-member:hover,
body.light-theme .collab-version:hover {
    box-shadow: 0 2px 8px var(--shadow-md);
}

/* 
   COLLABORATION MODAL
    */

.collab-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: collab-fade-in 0.2s ease;
}

.collab-modal {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: collab-slide-up 0.3s ease;
}

.collab-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.collab-modal-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.collab-modal-close {
    background: transparent;
    border: none;
    font-size: 32px;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.collab-modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.collab-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.collab-modal-body .collab-panel {
    border: none;
    border-radius: 0;
    height: 100%;
}

@keyframes collab-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .collab-modal {
        width: 95%;
        max-height: 90vh;
    }

    .collab-modal-header {
        padding: 16px;
    }

    .collab-modal-header h2 {
        font-size: 18px;
    }
}