/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --secondary-color: #10B981;
    --danger-color: #EF4444;
    --warning-color: #F59E0B;
    --bg-color: #F9FAFB;
    --surface-color: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

html {
    color-scheme: light dark;
}

html[data-theme="dark"] {
    --primary-color: #818CF8;
    --primary-hover: #A5B4FC;
    --secondary-color: #34D399;
    --danger-color: #F87171;
    --warning-color: #FBBF24;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.45), 0 4px 6px -2px rgba(0, 0, 0, 0.35);
}

html[data-theme="dark"] .result-card {
    background-color: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.35);
}

html,
body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.container {
    /* Reduce empty side margins on very wide screens */
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 0.5rem;
}

/* Header - compact */
.header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    background: var(--bg-color);
}

.theme-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

html[data-theme="light"] .theme-toggle-sun {
    display: none;
}

html[data-theme="dark"] .theme-toggle-moon {
    display: none;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: none;
}

.logo-icon {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
}

.logo-text {
    color: var(--text-primary);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.375rem;
    transition: all 0.2s;
    color: var(--text-primary);
}

.sidebar-toggle:hover {
    background-color: var(--bg-color);
}

.sidebar-toggle:active {
    transform: scale(0.95);
}

.toggle-icon {
    font-size: 1.5rem;
    line-height: 1;
}

/* Layout - more space for content */
.main-container {
    padding: 0.5rem 0;
    min-height: calc(100vh - 100px);
    flex: 1;
}

.layout {
    display: grid;
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
    gap: 0.75rem;
    transition: grid-template-columns 0.3s ease;
    align-items: start;
}

/* When sidebar collapsed: single column so main area is never squeezed to ~0 width */
.layout.sidebar-hidden {
    grid-template-columns: 1fr;
}

.layout.sidebar-hidden .sidebar.hidden {
    display: none !important;
}

/* Sidebar - compact; nav list scrolls when taller than viewport */
.sidebar {
    background-color: var(--surface-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    box-shadow: var(--shadow);
    height: fit-content;
    max-height: calc(100vh - 4.5rem);
    position: sticky;
    top: 56px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 1;
}

.nav-menu {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-gutter: stable;
    /* Wheel / touch scroll does not chain to the page or sibling columns */
    overscroll-behavior-y: contain;
}

.nav-menu::-webkit-scrollbar {
    width: 8px;
}

.nav-menu::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 4px;
}

.nav-menu::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.nav-menu::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.sidebar.hidden {
    width: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.nav-list {
    list-style: none;
}

.nav-category {
    margin-bottom: 0.75rem;
}

.nav-category-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    padding: 0.375rem 0.5rem;
    cursor: pointer;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.nav-category-title:hover {
    background-color: var(--bg-color);
}

.nav-tools {
    list-style: none;
    padding-left: 0.5rem;
}

.nav-tool {
    padding: 0.375rem 0.5rem;
    margin: 0.125rem 0;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.nav-tool a {
    color: inherit;
    text-decoration: none;
    display: block;
}

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

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

/* Content Area - maximize output space */
.content {
    background-color: var(--surface-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow);
    min-height: min(300px, calc(100vh - 140px));
    min-width: 0;
    width: 100%;
    max-width: 100%;
}

.layout.sidebar-hidden .content {
    grid-column: 1 / -1;
}

.tool-header {
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.tool-body {
    margin-top: 0.5rem;
}

/* Form Elements */
.form-group {
    margin-bottom: 0.75rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
}

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

html[data-theme="dark"] .form-input:focus,
html[data-theme="dark"] .form-select:focus,
html[data-theme="dark"] .form-textarea:focus {
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: inherit;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #059669;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #DC2626;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-color);
}

/* Cards */
.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
}

.result-card {
    background-color: #EFF6FF;
    border: 1px solid #BFDBFE;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    margin-top: 0.75rem;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Grid */
.grid {
    display: grid;
    gap: 0.75rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Todo List */
.todo-form-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.todo-task-card {
    transition: box-shadow 0.2s, border-color 0.2s;
}

.todo-task-card:hover {
    box-shadow: var(--shadow-lg);
}

.todo-task-card.overdue {
    border-left: 4px solid var(--danger-color);
}

.todo-task-card.completed .todo-task-title {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.todo-done-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--secondary-color);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.todo-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin: 0.25rem 0 0.5rem;
}

.todo-toolbar h3 {
    margin: 0;
    font-size: 1rem;
}

.todo-add-fab {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.todo-add-fab .btn {
    white-space: nowrap;
}

.todo-completed-section {
    padding: 0;
    overflow: hidden;
}

.todo-completed-section>summary.todo-completed-summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.9375rem;
    user-select: none;
}

.todo-completed-section>summary.todo-completed-summary::-webkit-details-marker {
    display: none;
}

.todo-completed-section>summary.todo-completed-summary::marker {
    content: '';
}

.todo-completed-summary-label::before {
    content: '▸';
    display: inline-block;
    margin-right: 0.5rem;
    transition: transform 0.2s ease;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.todo-completed-section[open]>summary.todo-completed-summary .todo-completed-summary-label::before {
    transform: rotate(90deg);
}

.todo-completed-count {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-color);
    border-radius: 999px;
    padding: 0.15rem 0.55rem;
    min-width: 1.5rem;
    text-align: center;
}

.todo-completed-body {
    padding: 0 1rem 1rem
}

.todo-task-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 210;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    box-sizing: border-box;
    overflow: hidden;
}

.todo-task-modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* Scroll lock is now handled via inline body styles in JS (position:fixed) */

.todo-task-modal {
    background: var(--surface-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    max-width: 720px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.todo-task-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.todo-task-modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.todo-task-modal-close {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
}

.todo-task-modal-close:hover {
    background: var(--bg-color);
}

.todo-task-modal-body {
    padding: 0;
}

.todo-task-modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    flex-wrap: wrap;
    margin-top: 0;
}

.todo-delete-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.todo-delete-modal-overlay.visible {
    opacity: 1;
    visibility: visible;
    overscroll-behavior: contain;
}

.todo-delete-modal {
    background: var(--surface-color);
    border-radius: 0.5rem;
    padding: 1.25rem;
    max-width: 360px;
    width: 100%;
    box-shadow: var(--shadow-lg);
}

.todo-delete-modal h3 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.todo-delete-modal p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
}

.todo-delete-modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* TaskFlow / Advanced To-Do (scoped) */
.todo-taskflow {
    --tf-accent-from: #a855f7;
    --tf-accent-to: #ec4899;
    --tf-glass-bg: color-mix(in srgb, var(--surface-color) 88%, transparent);
    --tf-glass-border: color-mix(in srgb, var(--border-color) 70%, transparent);
    margin: 0 -0.25rem;
    padding: 0 0.25rem 0.5rem;
}

.todo-taskflow .tf-glass {
    background: var(--tf-glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--tf-glass-border);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
}

.todo-taskflow .tf-dashboard-header {
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
}

.todo-taskflow .tf-dashboard-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.todo-taskflow .tf-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.9375rem;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.todo-taskflow .tf-brand-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.5rem;
    background: linear-gradient(135deg, var(--tf-accent-from), var(--tf-accent-to));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
}

.todo-taskflow .tf-dashboard-heading {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.todo-taskflow .tf-dashboard-sub {
    margin: 0.15rem 0 0;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.todo-taskflow .tf-dashboard-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.todo-taskflow .tf-search-wrap {
    position: relative;
    min-width: 0;
}

.todo-taskflow .tf-search-wrap .fa-search {
    position: absolute;
    left: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.85rem;
    pointer-events: none;
}

.todo-taskflow .tf-search-wrap input {
    width: 100%;
    min-width: 140px;
    max-width: 16rem;
    padding: 0.5rem 0.65rem 0.5rem 2rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: var(--surface-color);
    color: var(--text-primary);
}

.todo-taskflow .tf-icon-btn {
    width: 2.5rem;
    height: 2.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.todo-taskflow .tf-icon-btn:hover {
    background: var(--bg-color);
}

.todo-taskflow .tf-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    color: #fff;
    background: linear-gradient(90deg, var(--tf-accent-from), var(--tf-accent-to));
    box-shadow: var(--shadow);
    transition: filter 0.2s, transform 0.15s;
    white-space: nowrap;
}

.todo-taskflow .tf-btn-primary:hover {
    filter: brightness(1.06);
}

.todo-taskflow .tf-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem;
    margin-top: 1rem;
}

@media (min-width: 768px) {
    .todo-taskflow .tf-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.todo-taskflow .tf-stat-card {
    padding: 0.75rem 1rem;
    border-radius: 0.65rem;
    border: 1px solid var(--tf-glass-border);
    background: var(--tf-glass-bg);
    backdrop-filter: blur(8px);
}

.todo-taskflow .tf-stat-card-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.todo-taskflow .tf-stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0 0 0.2rem;
}

.todo-taskflow .tf-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.todo-taskflow .tf-stat-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.todo-taskflow .tf-stat-icon.stat-total {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.todo-taskflow .tf-stat-icon.stat-progress {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.todo-taskflow .tf-stat-icon.stat-done {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.todo-taskflow .tf-stat-icon.stat-late {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.todo-taskflow .tf-filter-bar {
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
}

.todo-taskflow .tf-filter-bar .grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .todo-taskflow .tf-filter-bar .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.todo-taskflow .tf-scroll-area {
    max-height: min(70vh, 900px);
    overflow-y: auto;
    padding-right: 0.25rem;
}

.todo-taskflow .tf-scroll-area::-webkit-scrollbar {
    width: 6px;
}

.todo-taskflow .tf-scroll-area::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 8px;
}

.todo-taskflow .tf-scroll-area::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 8px;
}

.todo-taskflow .tf-task-card {
    border-radius: 0.65rem;
    padding: 1rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--tf-glass-border);
    background: var(--tf-glass-bg);
    backdrop-filter: blur(10px);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: grab;
}

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

.todo-taskflow .tf-task-card.tf-dragging {
    opacity: 0.55;
    cursor: grabbing;
}

.todo-taskflow .tf-priority-high {
    border-left: 4px solid #ef4444;
}

.todo-taskflow .tf-priority-medium {
    border-left: 4px solid #f59e0b;
}

.todo-taskflow .tf-priority-low {
    border-left: 4px solid #10b981;
}

.todo-taskflow .tf-category-badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    vertical-align: middle;
}

.todo-taskflow .tf-cat-design {
    background: rgba(168, 85, 247, 0.25);
    color: #c4b5fd;
}

.todo-taskflow .tf-cat-dev {
    background: rgba(16, 185, 129, 0.22);
    color: #6ee7b7;
}

.todo-taskflow .tf-cat-doc {
    background: rgba(59, 130, 246, 0.22);
    color: #93c5fd;
}

.todo-taskflow .tf-cat-sec {
    background: rgba(239, 68, 68, 0.22);
    color: #fca5a5;
}

.todo-taskflow .tf-cat-test {
    background: rgba(245, 158, 11, 0.22);
    color: #fcd34d;
}

.todo-taskflow .tf-cat-personal {
    background: rgba(236, 72, 153, 0.22);
    color: #fbcfe8;
}

.todo-taskflow .tf-cat-other {
    background: rgba(148, 163, 184, 0.22);
    color: #e2e8f0;
}

html[data-theme="light"] .todo-taskflow .tf-cat-design {
    color: #6b21a8;
}

html[data-theme="light"] .todo-taskflow .tf-cat-dev {
    color: #047857;
}

html[data-theme="light"] .todo-taskflow .tf-cat-doc {
    color: #1d4ed8;
}

html[data-theme="light"] .todo-taskflow .tf-cat-sec {
    color: #b91c1c;
}

html[data-theme="light"] .todo-taskflow .tf-cat-test {
    color: #b45309;
}

html[data-theme="light"] .todo-taskflow .tf-cat-personal {
    color: #9d174d;
}

html[data-theme="light"] .todo-taskflow .tf-cat-other {
    color: #334155;
}

.todo-taskflow .tf-task-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0.35rem 0 0;
    line-height: 1.45;
}

.todo-taskflow .tf-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.todo-taskflow .tf-tag {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    border-radius: 0.35rem;
    font-size: 0.65rem;
    margin: 0.2rem 0.35rem 0 0;
    background: color-mix(in srgb, var(--primary-color) 18%, transparent);
    color: var(--text-primary);
}

.todo-taskflow .tf-progress-track {
    height: 6px;
    border-radius: 4px;
    background: var(--border-color);
    overflow: hidden;
    margin-top: 0.5rem;
}

.todo-taskflow .tf-progress-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--tf-accent-from), var(--tf-accent-to));
    transition: width 0.35s ease;
}

.todo-taskflow .tf-kanban {
    margin-top: 0.5rem;
}

.todo-taskflow .tf-kanban.hidden {
    display: none !important;
}

.todo-taskflow .tf-list-views.hidden {
    display: none !important;
}

.todo-taskflow .tf-kanban-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

@media (min-width: 900px) {
    .todo-taskflow .tf-kanban-columns {
        grid-template-columns: repeat(3, 1fr);
    }
}

.todo-taskflow .tf-kanban-col {
    min-height: 280px;
    padding: 0.75rem;
    border-radius: 0.65rem;
    border: 1px solid var(--tf-glass-border);
    background: var(--tf-glass-bg);
}

.todo-taskflow .tf-kanban-col-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.65rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.todo-taskflow .tf-drop-zone {
    min-height: 200px;
    transition: background 0.2s, border-color 0.2s;
    border-radius: 0.5rem;
    padding: 0.25rem;
}

.todo-taskflow .tf-drop-zone.tf-drag-over {
    background: color-mix(in srgb, var(--primary-color) 12%, transparent);
    border: 2px dashed var(--primary-color);
}

.todo-taskflow .tf-kanban-card h4 {
    margin: 0 0 0.35rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.todo-taskflow .tf-kanban-card p {
    margin: 0 0 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.todo-taskflow .tf-avatar {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    border: 2px solid var(--surface-color);
    vertical-align: middle;
}

/* Modal: single scroll container; header sticks top, actions stick bottom */
.todo-taskflow .tf-modal-glass.todo-task-modal {
    max-width: min(40rem, 100%);
    width: 100%;
    max-height: calc(100vh - 2rem);
    padding: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: var(--tf-glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--tf-glass-border);
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
}

/* Thin styled scrollbar inside modal */
.todo-taskflow .tf-modal-glass.todo-task-modal::-webkit-scrollbar {
    width: 6px;
}
.todo-taskflow .tf-modal-glass.todo-task-modal::-webkit-scrollbar-track {
    background: transparent;
}
.todo-taskflow .tf-modal-glass.todo-task-modal::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.todo-taskflow .tf-modal-glass.todo-task-modal > .todo-task-modal-header {
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 1rem 1.25rem 0.75rem;
    margin-bottom: 0;
    background: var(--tf-glass-bg);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
}

.todo-taskflow .tf-modal-glass.todo-task-modal > .todo-task-modal-body {
    padding: 0.5rem 1rem 0.75rem;
}

.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-group {
    margin-bottom: 0.5rem;
}

.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-label {
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
}

.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-input,
.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-select,
.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-textarea {
    padding: 0.5rem 0.65rem;
}

.todo-taskflow .tf-modal-glass .todo-task-modal-body .form-textarea {
    min-height: 70px;
}

.todo-taskflow .tf-modal-glass.todo-task-modal > .todo-task-modal-actions {
    position: sticky;
    bottom: 0;
    z-index: 2;
    padding: 0.75rem 1.25rem 1rem;
    border-top: 1px solid var(--border-color);
    background: var(--tf-glass-bg);
    backdrop-filter: blur(14px);
}

/* TaskFlow modal selects — high specificity so base .form-select never wins; color-scheme helps native list on Chrome/Edge */
.todo-taskflow .todo-task-modal select.form-select.tf-modal-select,
.todo-taskflow select.tf-modal-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.65rem 2.5rem 0.65rem 0.75rem;
    font-size: 1rem;
    line-height: 1.4;
    cursor: pointer;
    width: 100%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.65rem center;
    background-size: 1rem;
    transition: border-color 0.15s, box-shadow 0.15s;
    color-scheme: light;
}

html[data-theme="light"] .todo-taskflow .todo-task-modal select.form-select.tf-modal-select,
html[data-theme="light"] .todo-taskflow select.tf-modal-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

html[data-theme="dark"] .todo-taskflow .todo-task-modal select.form-select.tf-modal-select,
html[data-theme="dark"] .todo-taskflow select.tf-modal-select {
    color-scheme: dark;
}

.todo-taskflow .todo-task-modal select.form-select.tf-modal-select:hover,
.todo-taskflow select.tf-modal-select:hover {
    border-color: color-mix(in srgb, var(--primary-color) 45%, var(--border-color));
}

.todo-taskflow .todo-task-modal select.form-select.tf-modal-select:focus,
.todo-taskflow select.tf-modal-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

html[data-theme="dark"] .todo-taskflow .todo-task-modal select.form-select.tf-modal-select:focus,
html[data-theme="dark"] .todo-taskflow select.tf-modal-select:focus {
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.todo-taskflow .todo-task-modal select.form-select.tf-modal-select option,
.todo-taskflow select.tf-modal-select option {
    background: var(--surface-color);
    color: var(--text-primary);
    padding: 0.5rem;
}

.todo-taskflow .tf-subtasks-form-group {
    min-width: 0;
}

.todo-taskflow .tf-modal-subtasks-wrap {
    width: 100%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.todo-taskflow .tf-modal-subtask-row {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.5rem;
    padding: 0;
    margin: 0;
    border: none;
    background: transparent;
    min-width: 0;
}

.todo-taskflow .tf-modal-subtask-row .tf-modal-subtask-text {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
    margin: 0;
    font-size: 1rem;
    line-height: 1.4;
}

.todo-taskflow .tf-modal-subtask-remove {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s;
}

.todo-taskflow .tf-modal-subtask-remove:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    transform: scale(1.1);
}

.todo-taskflow .tf-btn-add-subtask {
    width: 100%;
    justify-content: center;
    margin-top: 0.25rem;
    padding: 0.6rem 1rem;
    font-size: 0.9375rem;
}

.todo-taskflow .tf-modal-grid-2 {
    min-width: 0;
}

.todo-taskflow .tf-link-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.8125rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0;
}

.todo-taskflow .tf-advanced-details {
    margin-top: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-color);
}

.todo-taskflow .tf-advanced-details summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.todo-taskflow .tf-empty {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
    border-radius: 0.65rem;
    border: 1px dashed var(--border-color);
}

.todo-taskflow .tf-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.todo-taskflow .tf-meta-row .tf-meta-danger {
    color: var(--danger-color);
}

.todo-taskflow .tf-task-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.65rem;
}

.todo-taskflow .tf-task-actions .btn {
    padding: 0.35rem 0.65rem;
    font-size: 0.8125rem;
}

/* Home Page - compact */
.home-hero {
    text-align: left;
    padding: 0.75rem 0 1rem;
}

.home-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.home-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.home-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    max-width: 70ch;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.tool-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.tool-card-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tool-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.tool-card-description {
    color: var(--text-secondary);
    font-size: 0.75rem;
    line-height: 1.35;
}

.seo-content {
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.seo-content h2 {
    font-size: 1rem;
    margin: 0.75rem 0 0.5rem;
}

.seo-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.quick-links a {
    text-decoration: none;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 0.35rem 0.7rem;
    font-size: 0.8125rem;
    color: var(--text-primary);
    background: var(--surface-color);
}

.quick-links a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.6rem 0.75rem;
    margin-top: 0.5rem;
    background: var(--surface-color);
}

.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
}

.faq-item p {
    margin-top: 0.5rem;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
}

.breadcrumb-nav a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-nav a:hover {
    text-decoration: underline;
}

.related-tools {
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
    padding-top: 0.9rem;
}

.related-tools h2 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.5rem;
}

.related-tool-link {
    text-decoration: none;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.5rem 0.6rem;
    font-size: 0.875rem;
}

.related-tool-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.noscript-seo {
    max-width: 900px;
    margin: 1rem auto;
    padding: 0 1rem;
}

.noscript-seo ul {
    margin-top: 0.5rem;
    padding-left: 1.25rem;
}

/* Footer - compact */
.footer {
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 0.5rem 0;
    margin-top: 0.75rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

/* Sidebar overlay for mobile */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 85;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-backdrop.visible {
    opacity: 1;
}

body.sidebar-open .sidebar-backdrop {
    display: block;
}

@media (min-width: 769px) {
    .sidebar-backdrop {
        display: none !important;
    }
}

/* Timer complete — Windows-style toast (bottom-right) */
.timer-toast-win {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    max-width: 22rem;
    width: calc(100vw - 2rem);
    background: #fff;
    color: #202124;
    border-radius: 0.5rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18), 0 0 1px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #4285f4;
    padding: 0.75rem 2.25rem 0.75rem 0.875rem;
    z-index: 10000;
    font-family: 'Segoe UI', system-ui, sans-serif;
    animation: timerToastSlide 0.35s ease-out;
}

@keyframes timerToastSlide {
    from {
        transform: translateX(120%);
        opacity: 0;
    }

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

.timer-toast-win-app {
    font-size: 0.75rem;
    color: #5f6368;
    margin-bottom: 0.25rem;
}

.timer-toast-win-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
}

.timer-toast-win-body {
    font-size: 0.8125rem;
    color: #5f6368;
    line-height: 1.4;
}

.timer-toast-win-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: none;
    color: #5f6368;
    cursor: pointer;
    font-size: 1.125rem;
    line-height: 1;
    padding: 0.25rem;
    border-radius: 0.25rem;
}

.timer-toast-win-close:hover {
    background: #f1f3f4;
}

/* Responsive - mobile first */
@media (max-width: 768px) {
    .todo-task-modal {
        padding: 1rem;
        border-radius: 0.75rem;
    }

    .layout {
        grid-template-columns: 1fr;
        position: relative;
        gap: 0;
    }

    .layout.sidebar-hidden {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 52px;
        bottom: 0;
        width: 260px;
        max-width: 85%;
        max-height: none;
        z-index: 90;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        height: auto;
        overflow: hidden;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y;
        box-shadow: 4px 0 12px rgba(0, 0, 0, 0.15);
    }

    .sidebar:not(.hidden) {
        transform: translateX(0);
    }

    .sidebar.hidden {
        transform: translateX(-100%);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-content {
        gap: 0.5rem;
    }

    .logo {
        font-size: 1rem;
        gap: 0.375rem;
    }

    .logo-icon {
        width: 1.5rem;
        height: 1.5rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .content {
        padding: 0.5rem 0.75rem;
        min-height: auto;
    }

    .container {
        padding: 0 0.5rem;
    }

    .home-hero {
        padding: 0.5rem 0 0.75rem;
    }

    .home-title {
        font-size: 1.25rem;
    }

    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.625rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.9375rem;
    }
}

@media (max-width: 480px) {
    .content {
        padding: 0.5rem;
    }

    .tool-title {
        font-size: 1.125rem;
    }
}

/* TaskFlow todo — mobile: modal safe-area, dashboard stack, full-width actions */
@media (max-width: 768px) {
    .todo-task-modal-overlay {
        padding: 0.5rem;
    }

    .todo-taskflow .tf-modal-glass.todo-task-modal {
        max-height: calc(100vh - 1rem);
    }

    .todo-taskflow .tf-dashboard-title-row {
        flex-direction: column;
        align-items: stretch;
    }

    .todo-taskflow .tf-dashboard-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .todo-taskflow .tf-search-wrap {
        width: 100%;
        max-width: none;
    }

    .todo-taskflow .tf-search-wrap input {
        max-width: none;
        width: 100%;
    }

    .todo-taskflow .tf-dashboard-actions > .tf-btn-primary {
        width: 100%;
        justify-content: center;
        min-height: 2.75rem;
    }

    .todo-taskflow .tf-dashboard-actions .tf-icon-btn {
        width: 100%;
        min-height: 2.75rem;
    }

    .todo-taskflow .tf-filter-bar .grid-3 {
        grid-template-columns: 1fr;
    }

    .todo-taskflow .todo-task-modal-actions {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    .todo-taskflow .todo-task-modal-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.hidden {
    display: none;
}