/* ===== CSS VARIABLES & DESIGN SYSTEM ===== */
:root {
    /* Colors - Light Mode */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Accent Colors */
    --accent-primary: #4f46e5;
    --accent-primary-hover: #4338ca;
    --accent-secondary: #06b6d4;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
    --gradient-warning: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

    /* Status Colors */
    --status-todo: #64748b;
    --status-inprogress: #3b82f6;
    --status-waiting: #f59e0b;
    --status-done: #10b981;

    /* Priority Colors */
    --priority-critical: #ef4444;
    --priority-high: #f97316;
    --priority-medium: #eab308;
    --priority-low: #6b7280;

    /* Sync Status */
    --sync-connected: #10b981;
    --sync-syncing: #f59e0b;
    --sync-error: #ef4444;
    --sync-offline: #6b7280;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #64748b;
    --border-color: #334155;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* ===== GLOBAL RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    transition: background var(--transition-base), color var(--transition-base);
}

/* ===== HEADER ===== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    gap: var(--space-lg);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.sync-indicator {
    font-size: 8px;
    color: var(--sync-offline);
    transition: color var(--transition-base);
}

.sync-indicator.connected {
    color: var(--sync-connected);
}

.sync-indicator.syncing {
    color: var(--sync-syncing);
    animation: pulse 2s infinite;
}

.sync-indicator.error {
    color: var(--sync-error);
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

.header-center {
    flex: 1;
    max-width: 600px;
}

.search-bar {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-base);
}

.search-bar:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-icon {
    color: var(--text-tertiary);
    margin-right: var(--space-sm);
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
}

.search-bar input::placeholder {
    color: var(--text-tertiary);
}

.search-results-count {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: none;
}

.search-results-count.active {
    display: block;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Filter Dropdown */
.filter-dropdown {
    position: relative;
}

.filter-dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    min-width: 220px;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.filter-dropdown-content.show {
    display: block;
}

.filter-section {
    margin-bottom: var(--space-md);
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-section h4 {
    margin: 0 0 var(--space-sm) 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-section label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.filter-section label:hover {
    color: var(--accent-primary);
}

.filter-section input[type="checkbox"] {
    cursor: pointer;
}


.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

.theme-icon-dark {
    display: none;
}

[data-theme="dark"] .theme-icon-light {
    display: none;
}

[data-theme="dark"] .theme-icon-dark {
    display: block;
}

.btn-primary {
    padding: var(--space-sm) var(--space-lg);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* ===== NAVIGATION TABS ===== */
.nav-tabs {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.nav-tab.active {
    background: var(--accent-primary);
    color: white;
}

.nav-tab svg {
    width: 18px;
    height: 18px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    height: calc(100vh - 140px);
    overflow-y: auto;
    padding: var(--space-xl);
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* ===== KANBAN BOARD ===== */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    height: 100%;
}

.kanban-column {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    min-height: 500px;
    box-shadow: var(--shadow);
}

.column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border-color);
}

.column-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.task-count {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 0 var(--space-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.column-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    min-height: 400px;
}

.task-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 4px solid var(--priority-medium);
}

.task-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.task-card.priority-Critique {
    border-left-color: var(--priority-critical);
}

.task-card.priority-Haute {
    border-left-color: var(--priority-high);
}

.task-card.priority-Moyenne {
    border-left-color: var(--priority-medium);
}

.task-card.priority-Basse {
    border-left-color: var(--priority-low);
}

.task-card.dragging {
    opacity: 0.5;
}

.task-card-header {
    margin-bottom: var(--space-sm);
}

.task-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.task-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

.task-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.task-card-indicators {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--border-color);
}

.task-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.task-indicator svg {
    opacity: 0.7;
}

.task-indicators-cell {
    text-align: center;
}

.task-indicator-small {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.btn-delete-task {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-delete-task:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Add Item Box */
.add-item-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    margin-top: var(--space-md);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.add-item-box:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
    color: var(--accent-primary);
}

.add-item-box svg {
    opacity: 0.7;
}

.add-item-box:hover svg {
    opacity: 1;
}


.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.badge-priority {
    background: var(--priority-medium);
    color: white;
}

.badge-priority.Critique {
    background: var(--priority-critical);
}

.badge-priority.Haute {
    background: var(--priority-high);
}

.badge-priority.Moyenne {
    background: var(--priority-medium);
}

.badge-priority.Basse {
    background: var(--priority-low);
}

.badge-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.task-deadline {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.task-deadline.overdue {
    color: var(--priority-critical);
    font-weight: 600;
}

.task-deadline.soon {
    color: var(--priority-high);
    font-weight: 500;
}

/* ===== CALENDAR VIEW ===== */
.calendar-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.calendar-controls h2 {
    min-width: 200px;
    text-align: center;
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-sm);
    background: var(--bg-secondary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.calendar-day-header {
    padding: var(--space-md);
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.calendar-day {
    min-height: 100px;
    padding: var(--space-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calendar-day:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow);
}

.calendar-day.other-month {
    opacity: 0.3;
}

.calendar-day.today {
    border: 2px solid var(--accent-primary);
    background: rgba(79, 70, 229, 0.05);
}

.calendar-day-number {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.calendar-task-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
    margin: 2px;
}

.calendar-task-dot.critical {
    background: var(--priority-critical);
}

.calendar-task-dot.high {
    background: var(--priority-high);
}

/* ===== LIST VIEW ===== */
.list-controls {
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.filters {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.filter-group label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
}

.filter-group input[type="checkbox"] {
    cursor: pointer;
}

.table-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.task-table {
    width: 100%;
    border-collapse: collapse;
}

.task-table thead {
    background: var(--bg-primary);
    border-bottom: 2px solid var(--border-color);
}

.task-table th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: background var(--transition-fast);
}

.task-table th:hover {
    background: var(--bg-tertiary);
}

.sort-indicator {
    display: inline-block;
    margin-left: var(--space-xs);
    opacity: 0.3;
}

.sort-indicator.asc::after {
    content: '↑';
    opacity: 1;
}

.sort-indicator.desc::after {
    content: '↓';
    opacity: 1;
}

.task-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.task-table tbody tr:hover {
    background: var(--bg-primary);
}

.task-table td {
    padding: var(--space-md);
    font-size: var(--font-size-sm);
}

.task-table .task-title-cell {
    font-weight: 500;
}

.highlight {
    background: rgba(79, 70, 229, 0.2);
    padding: 2px 4px;
    border-radius: 2px;
}

/* ===== TIMELINE VIEW ===== */
.timeline-container {
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    min-height: 600px;
}

.timeline-item {
    position: relative;
    padding-left: var(--space-2xl);
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-left: 2px solid var(--border-color);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-primary);
}

.timeline-date {
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: var(--space-sm);
}

.timeline-tasks {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

/* ===== DASHBOARD VIEW ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow);
}

.stat-card.full-width {
    grid-column: 1 / -1;
}

.stat-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.metric-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.metric-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== MODALS ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--priority-critical);
    color: white;
}

.modal-body {
    padding: var(--space-xl);
    overflow-y: auto;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
    margin-top: var(--space-xl);
}

/* ===== FLOATING ACTION BUTTON ===== */
.fab {
    position: fixed;
    bottom: var(--space-2xl);
    right: var(--space-2xl);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 999;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.5);
}

.fab svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .kanban-board {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
    }

    .header-center {
        order: 3;
        width: 100%;
        max-width: 100%;
    }

    .kanban-board {
        grid-template-columns: 1fr;
    }

    .nav-tabs {
        overflow-x: auto;
    }

    .calendar-grid {
        font-size: var(--font-size-sm);
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ===== ANIMATIONS ===== */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.task-card,
.calendar-day,
.timeline-item {
    animation: slideIn 0.3s ease;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 280px;
    max-width: 400px;
    opacity: 0;
    transform: translateX(400px);
    transition: all var(--transition-base);
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-icon {
    font-size: var(--font-size-xl);
    line-height: 1;
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.toast-success {
    border-left: 4px solid var(--status-done);
}

.toast-error {
    border-left: 4px solid var(--priority-critical);
}

.toast-warning {
    border-left: 4px solid var(--priority-high);
}

.toast-info {
    border-left: 4px solid var(--accent-primary);
}

/* ===== MODALS ===== */
.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: 9999;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--text-primary);
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ===== ANALYTICS DASHBOARD ===== */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.analytics-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow);
}

.analytics-card h4 {
    margin: 0 0 var(--space-md) 0;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.analytics-card canvas {
    max-height: 250px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-value.stat-danger {
    color: var(--priority-critical);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

.project-list,
.deadline-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.project-item,
.deadline-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
}

.project-count {
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.deadline-date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.deadline-date.deadline-urgent {
    color: var(--priority-critical);
    font-weight: 600;
}

.deadline-date.deadline-soon {
    color: var(--priority-high);
    font-weight: 500;
}

/* ===== KEYBOARD SHORTCUTS HELP ===== */
.shortcuts-help-modal {
    max-width: 700px;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.shortcut-category h4 {
    margin: 0 0 var(--space-md) 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.shortcut-item:last-child {
    border-bottom: none;
}

.shortcut-item kbd {
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border: 1px solid var(--border-color);
}

.shortcut-item span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ===== IMPORT PREVIEW ===== */
.import-preview-modal {
    max-width: 600px;
}

.import-mode-selector {
    margin: var(--space-md) 0;
    padding: var(--space-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.import-mode-selector label {
    display: block;
    padding: var(--space-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.import-mode-selector label:hover {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.preview-list {
    max-height: 300px;
    overflow-y: auto;
    margin-top: var(--space-md);
}

.preview-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.preview-item:last-child {
    border-bottom: none;
}

/* ===== SYNC QUEUE BADGE ===== */
.sync-queue-badge {
    display: inline-block;
    background: var(--priority-critical);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: var(--space-xs);
    min-width: 20px;
    text-align: center;
}

/* ===== TASK HIGHLIGHT ===== */
.highlight-task {
    animation: highlightPulse 2s ease;
}

@keyframes highlightPulse {
    0%, 100% {
        background: var(--bg-primary);
    }
    50% {
        background: rgba(79, 70, 229, 0.2);
    }
}

/* ===== UNDO/REDO BUTTONS ===== */
#undoBtn:disabled,
#redoBtn:disabled {
    cursor: not-allowed;
}

/* ===== UTILITY CLASSES ===== */
.text-muted {
    color: var(--text-tertiary);
    font-style: italic;
}