/* feature: tasks.css */

/* ------------------------------------------- */
/* ------ TASKS (v7 - Collaboration Edition) ---- */
/* ------------------------------------------- */

/* --- Main Layout & Mobile-First Foundation --- */
.task-main-layout { display: flex; flex-direction: column; gap: 24px; height: calc(100vh - var(--header-height) - (var(--content-padding) * 2) - 24px); max-height: calc(100vh - var(--header-height) - (var(--content-padding) * 2) - 24px); }
.task-sidebar { width: 100%; flex-shrink: 0; background-color: var(--bg-secondary); padding: 24px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); transition: all var(--transition-std); overflow: hidden; }
.task-sidebar.collapsed { height: 0; padding-top: 0; padding-bottom: 0; margin-bottom: -24px; border: none; opacity: 0; }
.task-sidebar h3 { font-size: 1.25rem; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border-secondary); }
.task-sidebar .form-field { margin-bottom: 20px; }
.task-content-area { flex-grow: 1; min-width: 0; display: flex; flex-direction: column; height: 100%; }
.task-content-header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; flex-shrink: 0; flex-wrap: wrap; }
.task-content-header .task-search-field { flex: 1 1 180px; }
.task-content-header .form-field { margin-bottom: 0; flex: 1 1 150px; }
.task-content-header .view-toggle-buttons { margin-left: auto; }
.task-content-header .btn-primary { flex-shrink: 0; }
.task-content-header .view-toggle-buttons .btn-icon { width: 44px; height: 44px; }
.tasks-view-container { flex-grow: 1; overflow: auto; position: relative; border-radius: var(--radius-lg); }
#tasksViewContainer.list-view-active #taskKanbanBoard { display: none; }
#tasksViewContainer.kanban-view-active #taskListContainer { display: none; }

/* --- Kanban Board --- */
.task-kanban-board { display: flex; flex-direction: column; gap: 20px; padding: 10px; height: 100%; }
.task-kanban-column { background-color: var(--bg-tertiary); border-radius: var(--radius-lg); display: flex; flex-direction: column; flex-shrink: 0; }
.task-kanban-column-header { padding: 16px; font-weight: 600; font-size: 1.1rem; border-bottom: 2px solid var(--border-secondary); text-transform: capitalize; color: var(--text-primary); flex-shrink: 0; display: flex; align-items: center; position: sticky; top: 0; background-color: var(--bg-tertiary); z-index: 1; }
.task-kanban-column-header .count-badge { background-color: var(--bg-secondary); color: var(--text-secondary); border-radius: var(--radius-full); padding: 2px 8px; font-size: 0.8em; margin-left: 8px; }
.task-kanban-cards { padding: 16px; display: flex; flex-direction: column; gap: 16px; transition: background-color var(--transition-fast); min-height: 120px; flex-grow: 1; }
.task-kanban-cards:empty::after { content: "Drop tasks here"; color: var(--text-placeholder); font-style: italic; border: 2px dashed var(--border-interactive); border-radius: var(--radius-md); padding: 30px; text-align: center; }
.task-kanban-cards.drag-over { background-color: var(--accent-primary-light); border-radius: var(--radius-md); }

/* --- List View --- */
.task-list-view { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 10px; height: 100%; overflow-y: auto; }

@media (min-width: 768px) {
    .task-list-view { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
    .task-kanban-board { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(300px, 1fr); overflow-x: auto; padding-bottom: 20px; }
    .task-kanban-column { height: 100%; }
    .task-kanban-cards { overflow-y: auto; }
}
@media (min-width: 1024px) {
    .task-main-layout { flex-direction: row; gap: 28px; }
    .task-sidebar { width: 280px; }
    .task-sidebar.collapsed { width: 0; padding-left: 0; padding-right: 0; margin-right: -28px; margin-bottom: 0; }
}

/* --- Polished Task Card --- */
.task-card { background-color: var(--bg-secondary); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: 16px; border-left: 5px solid var(--text-placeholder); cursor: pointer; transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s; user-select: none; display: flex; flex-direction: column; gap: 8px; }
.task-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.task-card.is-dragging { opacity: 0.4; transform: rotate(3deg); box-shadow: var(--shadow-xl); }
.task-card.priority-low { border-left-color: var(--accent-info); }
.task-card.priority-medium { border-left-color: var(--accent-secondary); }
.task-card.priority-high { border-left-color: var(--accent-warning); }
.task-card.priority-urgent { border-left-color: var(--accent-danger); }
.task-card.status-completed { opacity: 0.7; border-left-color: var(--text-placeholder); }
.task-card.status-completed .task-card-title { text-decoration: line-through; }
.task-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.task-card-title { font-weight: 600; font-size: 1.05rem; color: var(--text-primary); margin: 0; word-break: break-word; }
.task-card-top-meta { margin-bottom: 8px; }
.task-card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border-secondary); font-size: var(--font-size-sm); color: var(--text-secondary); }
.task-card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.task-card-meta span { display: inline-flex; align-items: center; gap: 6px; }
.task-card-meta svg { width: 14px; height: 14px; stroke: currentColor; opacity: 0.8; }
.task-card-assignees { display: flex; }
.task-card-assignee { width: 28px; height: 28px; border-radius: 50%; background-color: var(--accent-primary); color: var(--text-on-accent); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: var(--font-size-sm); flex-shrink: 0; border: 2px solid var(--bg-secondary); margin-left: -8px; }
.task-card-assignee:first-child { margin-left: 0; }
.task-card-assignee.unassigned { background-color: var(--bg-tertiary); color: var(--text-secondary); border-color: var(--bg-secondary); }
.task-card-assignee.more { background-color: var(--text-placeholder); }
.task-card-due-date { display: flex; align-items: center; gap: 6px; font-size: var(--font-size-sm); }
.task-card-due-date.is-overdue { color: var(--accent-danger); font-weight: 600; }
.task-card-due-date svg { width: 15px; height: 15px; flex-shrink: 0; }

/* --- Task Detail Overlay & Mobile Fix --- */
.task-detail-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: rgba(var(--bg-primary-rgb), 0.8); backdrop-filter: blur(8px); z-index: 1500; display: flex; animation: fadeIn 0.3s ease-out; }
.task-detail-content { background-color: var(--bg-secondary); margin: auto; width: 95%; max-width: 1200px; height: 90vh; border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); display: flex; flex-direction: column; overflow: hidden; animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.task-detail-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 28px; border-bottom: 1px solid var(--border-primary); flex-shrink: 0; }
.task-detail-header #taskDetailTitle { background: none; border: none; font-size: 1.75rem; font-weight: 600; color: var(--text-primary); padding: 4px 8px; margin: -4px -8px; width: calc(100% + 16px); border-radius: var(--radius-md); transition: background-color .2s; line-height: inherit; font-family: inherit; }
.task-detail-header #taskDetailTitle:focus { background-color: var(--bg-tertiary); box-shadow: none; outline: none; }

.task-detail-body { display: flex; flex-direction: column; flex-grow: 1; overflow-y: auto; }
.task-detail-main { padding: 24px; display: flex; flex-direction: column; flex-grow: 1; }
.task-detail-sidebar { width: 100%; flex-shrink: 0; background-color: var(--bg-tertiary); padding: 24px; border-top: 1px solid var(--border-primary); }

@media (min-width: 1024px) {
    .task-detail-body { flex-direction: row; overflow: hidden; }
    .task-detail-main { padding: 28px; flex-grow: 1; overflow-y: auto; }
    .task-detail-sidebar { width: 320px; border-left: 1px solid var(--border-primary); border-top: none; overflow-y: auto; }
}

.task-detail-tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border-secondary); margin-bottom: 24px; flex-shrink: 0; flex-wrap: wrap; }
.task-detail-tab-btn { padding: 12px 16px; border: none; background: none; font-size: 1rem; font-weight: 500; color: var(--text-secondary); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -1px; transition: color 0.2s, border-color 0.2s; }
.task-detail-tab-btn:hover { color: var(--text-primary); }
.task-detail-tab-btn.active { color: var(--accent-primary); border-bottom-color: var(--accent-primary); }
.tab-count-badge { background-color: var(--bg-interactive-hover); color: var(--text-secondary); padding: 2px 6px; font-size: 0.8em; border-radius: var(--radius-full); margin-left: 6px; transition: background-color 0.2s, color 0.2s; }
.task-detail-tab-btn.active .tab-count-badge { background-color: var(--accent-primary); color: var(--text-on-accent); }
.task-detail-tab-content { display: none; flex-grow: 1; flex-direction: column; }
.task-detail-tab-content.active { display: flex; animation: fadeIn 0.3s; }
#taskDetailDescription { width: 100%; min-height: 120px; border-radius: var(--radius-md); background-color: var(--bg-primary); border: 1px solid var(--border-secondary); padding: 12px; }
#taskDetailSubtaskList { flex-grow: 1; overflow-y: auto; margin-bottom: 16px; }
#taskDetailSubtaskList .subtask-item { display: flex; align-items: center; gap: 12px; padding: 10px; border-radius: var(--radius-md); }
#taskDetailSubtaskList .subtask-item:hover { background-color: var(--bg-tertiary); }
.subtask-item input[type="checkbox"] { width: 18px; height: 18px; flex-shrink: 0; cursor: pointer; }
.subtask-item label { flex-grow: 1; cursor: pointer; }
.subtask-item.completed label { text-decoration: line-through; color: var(--text-secondary); }
.add-subtask-form { margin-top: auto; flex-shrink: 0; padding-top: 16px; border-top: 1px solid var(--border-secondary); }
#taskDetailCommentList { flex-grow: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; margin-bottom: 16px; }
.comment-item { display: flex; gap: 12px; }
.comment-avatar { width: 36px; height: 36px; border-radius: 50%; background-color: var(--accent-primary); color: var(--text-on-accent); display: flex; align-items: center; justify-content: center; font-weight: 600; flex-shrink: 0; }
.comment-avatar svg { width: 20px; height: 20px; }
.comment-content { background-color: var(--bg-tertiary); padding: 12px 16px; border-radius: var(--radius-lg); flex-grow: 1; }
.comment-header { display: flex; gap: 8px; align-items: baseline; margin-bottom: 4px; }
.comment-user { font-weight: 600; color: var(--text-primary); }
.comment-time { font-size: 0.8rem; color: var(--text-secondary); }
.comment-text { white-space: pre-wrap; word-break: break-word; }
.comment-item.activity-log .comment-content { background-color: transparent; border: 1px dashed var(--border-secondary); font-style: italic; color: var(--text-secondary); }
.comment-item.activity-log .comment-avatar { background-color: var(--text-placeholder); }
.add-comment-form { margin-top: auto; flex-shrink: 0; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; padding-top: 16px; border-top: 1px solid var(--border-secondary);}
.add-comment-form textarea { min-height: 80px; }
#taskDetailAttachmentList { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 16px; flex-grow: 1; overflow-y: auto; }
.attachment-item { background-color: var(--bg-tertiary); padding: 12px; border-radius: var(--radius-md); text-align: center; word-break: break-all; }
.attachment-item a { text-decoration: none; color: var(--text-primary); }
.attachment-icon { font-size: 2.5rem; }
.attachment-name { font-size: 0.8rem; margin-top: 8px; display: block; }
.add-attachment-form { margin-top: auto; flex-shrink: 0; padding-top: 16px; border-top: 1px solid var(--border-secondary);}
.btn-danger-outline { background: transparent; border: 2px solid var(--accent-danger); color: var(--accent-danger); box-shadow: none; }
.btn-danger-outline:hover:not(:disabled) { background: var(--bg-danger-light); color: var(--accent-danger-hover); border-color: var(--accent-danger-hover); transform: none; filter: none; }
.task-sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.task-sidebar-header h3 { margin-bottom: 0; border-bottom: none; padding-bottom: 0; }
.task-save-status { font-size: 0.75rem; font-weight: 600; color: var(--text-placeholder); transition: all 0.3s; opacity: 0; }
.task-save-status.saving, .task-save-status.success, .task-save-status.error, .task-save-status.typing { opacity: 1; }
.task-save-status.success { color: var(--text-success); }
.task-save-status.error { color: var(--text-danger); }
.empty-state-inline.compact { padding: 24px; font-style: italic; margin: 0; flex-grow: 1; display: flex; align-items: center; justify-content: center; }
.empty-state-inline.compact p { margin: 0; }
.form-field .char-counter { display: block; text-align: right; font-size: 0.75rem; color: var(--text-placeholder); margin-top: 4px; }
.kanban-add-task-btn { background: none; border: none; color: var(--text-placeholder); cursor: pointer; width: 28px; height: 28px; border-radius: var(--radius-sm); font-size: 1.5rem; line-height: 1; margin-left: auto; transition: all var(--transition-fast); }
.kanban-add-task-btn:hover { background-color: var(--bg-interactive-hover); color: var(--accent-primary); transform: scale(1.1); }
.task-card.new-task-animation { animation: new-task-glow 1.5s ease-out; }
@keyframes new-task-glow {
    0% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 0 0 4px var(--accent-secondary), var(--shadow-lg); }
    100% { box-shadow: var(--shadow-md); }
}
/* Multi-select for assignees */
#assignee-checklist { max-height: 200px; overflow-y: auto; border: 1px solid var(--border-secondary); padding: 8px; border-radius: var(--radius-md); background-color: var(--bg-primary); }
#assignee-checklist .multi-select-item { display: flex; align-items: center; gap: 8px; padding: 6px; border-radius: var(--radius-sm); }
#assignee-checklist .multi-select-item:hover { background-color: var(--bg-tertiary); }
#assignee-checklist input[type="checkbox"] { width: 16px; height: 16px; flex-shrink: 0; }