/* =============================================================================
   Task Manager Styles
   ============================================================================= */

.tasks-app {
    min-height: 100vh;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.tasks-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.tasks-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tasks-header-left h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.3rem;
    line-height: 1;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.back-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tasks-view-nav {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.view-btn {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.view-btn.active {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

.tasks-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ── User Switcher ──────────────────────────────────────────────────────── */

.tasks-user-switcher {
    display: flex;
    gap: 4px;
}

.user-chip {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.user-chip:hover {
    background: var(--bg-hover);
}

.user-chip.active {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

/* ── Layout ─────────────────────────────────────────────────────────────── */

.tasks-layout {
    display: flex;
    height: calc(100vh - 56px);
}

.tasks-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.sidebar-section {
    flex: 1;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.btn-icon {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

/* ── Area Tree ──────────────────────────────────────────────────────────── */

.area-tree {
    padding: 0 8px 12px;
}

.area-item {
    margin-bottom: 2px;
}

.area-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s;
    font-size: 0.9rem;
    font-weight: 600;
}

.area-header:hover {
    background: var(--bg-hover);
}

.area-header .area-color {
    width: 10px;
    height: 10px;
    border-radius: 3px;
    flex-shrink: 0;
}

.area-header .area-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.area-header .area-actions {
    display: none;
    gap: 2px;
}

.area-header:hover .area-actions {
    display: flex;
}

.area-action-btn {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.area-action-btn:hover {
    background: var(--bg-hover-active);
    color: var(--text-primary);
}

.project-list {
    padding-left: 18px;
}

.project-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.project-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.project-item.selected {
    background: var(--bg-hover-active);
    color: var(--text-primary);
    font-weight: 500;
}

.project-item .project-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}

.project-item .project-count {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-hover);
    padding: 1px 6px;
    border-radius: 8px;
}

.project-item .project-actions {
    display: none;
    gap: 2px;
}

.project-item:hover .project-actions {
    display: flex;
}

.project-item:hover .project-count {
    display: none;
}

/* ── Sidebar Stats ──────────────────────────────────────────────────────── */

.sidebar-stats {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.stat-pill {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 8px;
    background: var(--bg-hover);
}

.stat-pill .stat-num {
    font-weight: 600;
    color: var(--text-primary);
}

/* ── Task List ──────────────────────────────────────────────────────────── */

.tasks-main {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.view-panel {
    display: none;
    height: 100%;
}

.view-panel.active {
    display: flex;
    flex-direction: column;
}

.list-toolbar {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
}

.list-filters {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-select {
    padding: 5px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.82rem;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.task-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 20px;
}

.task-group-header {
    padding: 12px 0 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
    margin-top: 8px;
}

.task-group-header:first-child {
    margin-top: 0;
}

.task-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    border-bottom: 1px solid var(--border-subtle);
}

.task-row:hover {
    background: var(--bg-hover);
}

.task-row.is-blocked {
    opacity: 0.6;
}

.task-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-muted);
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.task-checkbox:hover {
    border-color: var(--accent-green);
}

.task-checkbox.done {
    background: var(--accent-green);
    border-color: var(--accent-green);
}

.task-checkbox.done::after {
    content: '\2713';
    color: #fff;
    font-size: 11px;
    font-weight: bold;
}

.task-title {
    flex: 1;
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.task-row.status-done .task-title {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.priority-badge {
    font-size: 0.7rem;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-urgent {
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent);
}

.priority-high {
    background: rgba(255, 193, 7, 0.2);
    color: var(--accent-yellow);
}

.priority-low {
    color: var(--text-muted);
    font-style: italic;
}

.task-due {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.task-due.overdue {
    color: var(--accent);
    font-weight: 600;
}

.task-assignees-badges {
    display: flex;
    gap: 2px;
}

.assignee-badge {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent-blue);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.blocked-icon {
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: bold;
}

.task-list-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.task-list-empty p {
    margin-top: 8px;
    font-size: 0.9rem;
}

/* ── Mind Map ───────────────────────────────────────────────────────────── */

.mindmap-toolbar {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
    align-items: center;
}

.mindmap-svg {
    width: 100%;
    flex: 1;
    background: var(--bg-primary);
}

.mindmap-node {
    cursor: pointer;
}

.mindmap-node text {
    fill: var(--text-primary);
    font-size: 12px;
    pointer-events: none;
}

.mindmap-node circle {
    stroke-width: 2px;
    transition: r 0.2s;
}

.mindmap-node:hover circle {
    r: 14;
}

.mindmap-link {
    fill: none;
    stroke-width: 1.5;
}

.mindmap-link.hierarchy {
    stroke: var(--border-muted);
    stroke-opacity: 0.4;
}

.mindmap-link.dependency {
    stroke: var(--accent);
    stroke-opacity: 0.6;
    stroke-dasharray: 5 3;
    marker-end: url(#arrow);
}

/* ── Calendar ───────────────────────────────────────────────────────────── */

.calendar-toolbar {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
    align-items: center;
}

.cal-month-label {
    font-weight: 600;
    font-size: 1rem;
    min-width: 160px;
    text-align: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    flex: 1;
    overflow-y: auto;
    padding: 4px;
}

.cal-header-cell {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px 0;
    text-transform: uppercase;
}

.cal-day {
    min-height: 90px;
    border: 1px solid var(--border-subtle);
    padding: 4px;
    display: flex;
    flex-direction: column;
}

.cal-day.outside {
    opacity: 0.3;
}

.cal-day.today {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}

.cal-day-number {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.cal-day.today .cal-day-number {
    color: var(--accent-blue);
    font-weight: 700;
}

.cal-task {
    font-size: 0.72rem;
    padding: 2px 4px;
    border-radius: 3px;
    margin-bottom: 1px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
    background: var(--bg-hover);
    border-left: 3px solid var(--accent-blue);
}

.cal-task:hover {
    background: var(--bg-hover-active);
}

.cal-task.status-done {
    opacity: 0.5;
    text-decoration: line-through;
}

.cal-task.priority-urgent {
    border-left-color: var(--accent);
}

.cal-task.priority-high {
    border-left-color: var(--accent-yellow);
}

/* ── Modals ─────────────────────────────────────────────────────────────── */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 520px;
    max-width: 95vw;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.modal-sm {
    width: 360px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 4px;
}

.modal-close:hover {
    color: var(--text-primary);
}

.task-form,
#area-form {
    padding: 16px 20px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

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

.assignee-checkboxes {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.assignee-checkboxes label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
}

.depends-select {
    min-height: 60px;
}

.form-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .tasks-sidebar {
        display: none;
    }

    .tasks-header {
        padding: 10px 12px;
    }

    .task-list {
        padding: 8px 12px;
    }

    .cal-day {
        min-height: 60px;
    }
}