:root {
    --bg-color: #ffffff;
    --text-main: #000000;
    --text-muted: #8e8e93;
    --border-color: #e5e5e7;
    --rock-black: #26282b;
    --btn-black: var(--rock-black);
    --btn-hover: #34373b;
    --icon-hover-bg: #f5f5f7;
    --modal-bg: #ffffff;
    --modal-shell-bg: #fcfcfb;
    --modal-shell-border: rgba(38, 40, 43, 0.1);
    --modal-shell-shadow: 0 30px 80px rgba(20, 23, 27, 0.18);
    --modal-header-bg: #f7f8f6;
    --modal-footer-bg: #f4f5f2;
    --modal-field-bg: #f7f8f6;
    --modal-field-border: #e3e6e1;
    --modal-close-bg: transparent;
    --modal-close-color: #62666d;
    --modal-close-border: transparent;
    --modal-close-shadow: none;
    --modal-close-hover-bg: #f1f3ef;
    --modal-close-hover-shadow: inset 0 1px 0 rgba(255,255,255,0.85), 0 10px 20px rgba(38, 40, 43, 0.12);
    --modal-close-focus-ring: rgba(38, 40, 43, 0.18);
    --task-delete-hover-bg: rgba(38, 40, 43, 0.06);
    --task-delete-active-bg: rgba(38, 40, 43, 0.1);
    --task-delete-focus-ring: rgba(38, 40, 43, 0.12);
    --shadow-control: 0 4px 10px rgba(20, 23, 27, 0.08);
    --shadow-control-hover: 0 10px 20px rgba(20, 23, 27, 0.14);
    --shadow-surface: 0 14px 28px rgba(20, 23, 27, 0.10);
    --shadow-overlay-surface: 0 30px 80px rgba(20, 23, 27, 0.18);
    
    --radius-control: 6px;
    --radius-field: 8px;
    --radius-surface: 12px;
    
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    --bg-color: var(--rock-black);
    --text-main: #ffffff;
    --text-muted: #a1a1aa;
    --border-color: #3a3d41;
    --btn-black: #ffffff;
    --btn-hover: #eceff3;
    --icon-hover-bg: #313438;
    --modal-bg: #1d1f22;
    --modal-shell-bg: #1f2124;
    --modal-shell-border: rgba(255, 255, 255, 0.08);
    --modal-shell-shadow: 0 34px 88px rgba(0, 0, 0, 0.42);
    --modal-header-bg: #2d3135;
    --modal-footer-bg: #25282c;
    --modal-field-bg: #2a2d31;
    --modal-field-border: #3d4247;
    --modal-close-bg: transparent;
    --modal-close-color: #d7dbe0;
    --modal-close-border: transparent;
    --modal-close-shadow: none;
    --modal-close-hover-bg: #33373c;
    --modal-close-hover-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 12px 22px rgba(0, 0, 0, 0.28);
    --modal-close-focus-ring: rgba(255, 255, 255, 0.14);
    --task-delete-hover-bg: rgba(255, 255, 255, 0.08);
    --task-delete-active-bg: rgba(255, 255, 255, 0.12);
    --task-delete-focus-ring: rgba(255, 255, 255, 0.1);
    --shadow-control: 0 6px 14px rgba(0, 0, 0, 0.18);
    --shadow-control-hover: 0 12px 24px rgba(0, 0, 0, 0.28);
    --shadow-surface: 0 18px 34px rgba(0, 0, 0, 0.24);
    --shadow-overlay-surface: 0 34px 88px rgba(0, 0, 0, 0.42);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body.modal-open {
    overflow: hidden;
}

#app {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 2rem;
}

/* Header */
.app-header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-main);
    text-decoration: none;
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--text-main);
}

.logo h1 {
    font-size: 1.125rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

/* Icons */
.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-control);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s, color 0.2s;
}

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

.icon-btn svg {
    width: 16px !important;
    height: 16px !important;
    stroke-width: 2px;
}

/* Main Content */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.black-btn {
    background-color: var(--btn-black);
    color: var(--bg-color);
    border: none;
    padding: 0.625rem 1.75rem;
    border-radius: var(--radius-control);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    transition: transform 0.2s, background-color var(--transition-speed), color var(--transition-speed);
    box-shadow: var(--shadow-control);
}

.black-btn i {
    width: 18px;
    height: 18px;
}

.black-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-control-hover);
}

.black-btn:active {
    transform: scale(0.98);
}

.hero-actions-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.hero-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    letter-spacing: 0.025em;
}

/* Task List (when shown) */
.tasks-section {
    margin-top: 2rem;
    padding-bottom: 4rem;
}

.tasks-section.hidden {
    display: none;
}

.section-header {
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.task-list-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.task-list-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.task-list-toolbar__selection {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1 1 auto;
    min-width: 0;
    min-height: 28px;
    flex-wrap: wrap;
}

.task-list-toolbar__checkbox {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    gap: 0.45rem;
    cursor: pointer;
    color: var(--text-main);
    font-size: 0.875rem;
}

.task-list-toolbar__checkbox input {
    width: 1.125rem;
    height: 1.125rem;
    margin: 0;
    border-radius: 5px;
    accent-color: var(--btn-black);
}

.task-list-toolbar__batch {
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    min-width: 0;
    display: inline-flex;
}

.task-list-toolbar__count {
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.task-list-toolbar__batch-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-main);
    border-radius: var(--radius-control);
    min-height: 28px;
    padding: 0 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.task-list-toolbar__batch-btn:hover {
    background: var(--icon-hover-bg);
}

.task-list-toolbar__batch-btn:disabled {
    cursor: not-allowed;
    opacity: 0.42;
    border-color: rgba(38, 40, 43, 0.08);
    color: var(--text-muted);
    background: transparent;
    box-shadow: none;
}

.task-list-toolbar__batch-btn:disabled:hover {
    background: transparent;
    border-color: rgba(38, 40, 43, 0.08);
    color: var(--text-muted);
}

[data-theme="dark"] .task-list-toolbar__batch-btn:disabled {
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .task-list-toolbar__batch-btn:disabled:hover {
    border-color: rgba(255, 255, 255, 0.08);
}

.task-list-batch-delete-btn,
#task-list-batch-delete-btn {
    border-color: rgba(184, 74, 74, 0.24);
    color: #b84a4a;
}

.task-list-batch-delete-btn:hover,
#task-list-batch-delete-btn:hover {
    background: rgba(184, 74, 74, 0.08);
    border-color: rgba(184, 74, 74, 0.3);
    color: #9f3e3e;
}

.task-list-batch-delete-btn:focus-visible,
#task-list-batch-delete-btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(184, 74, 74, 0.16);
}

[data-theme="dark"] .task-list-batch-delete-btn,
[data-theme="dark"] #task-list-batch-delete-btn {
    border-color: rgba(255, 154, 154, 0.24);
    color: #ff9a9a;
}

[data-theme="dark"] .task-list-batch-delete-btn:hover,
[data-theme="dark"] #task-list-batch-delete-btn:hover {
    background: rgba(255, 154, 154, 0.12);
    border-color: rgba(255, 154, 154, 0.3);
    color: #ffb3b3;
}

[data-theme="dark"] .task-list-batch-delete-btn:focus-visible,
[data-theme="dark"] #task-list-batch-delete-btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(255, 154, 154, 0.16);
}

.task-list-toolbar__batch-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--task-delete-focus-ring);
}

.task-list-toolbar__create {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    flex: 0 0 auto;
    flex-wrap: nowrap;
}

.black-btn--compact {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    gap: 0.5rem;
    box-shadow: none;
}

.black-btn--compact:hover {
    box-shadow: none;
}

.black-btn--compact i {
    width: 16px;
    height: 16px;
}

.task-cache-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.875rem;
    margin: -0.25rem 0 0.875rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid rgba(38, 40, 43, 0.06);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.025);
    color: var(--text-muted);
    font-size: 0.8125rem;
}

[data-theme="dark"] .task-cache-status-bar {
    border-color: rgba(255, 255, 255, 0.07);
    background: rgba(255, 255, 255, 0.035);
}

.task-cache-status-bar__main {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.45rem 0.75rem;
    min-width: 0;
}

.task-cache-status-bar__main strong {
    color: var(--text-main);
    font-weight: 600;
}

.task-cache-status-bar__label {
    color: var(--text-main);
    font-weight: 600;
}

.task-cache-status-bar__pill {
    display: inline-flex;
    align-items: center;
    min-height: 1.35rem;
    padding: 0 0.45rem;
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.08);
    color: var(--text-main);
    font-size: 0.75rem;
    font-weight: 600;
}

[data-theme="dark"] .task-cache-status-bar__pill {
    background: rgba(255, 255, 255, 0.1);
}

.task-cache-status-bar__actions {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex: 0 0 auto;
}

.task-cache-status-bar__actions .secondary-btn,
.task-cache-status-bar__actions .danger-btn {
    min-width: 0;
    min-height: 1.85rem;
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
}

.task-list-toolbar__filters {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    min-width: 0;
}

.task-list-toolbar__filter {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-width: 0;
}

.task-list-toolbar__filter span {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
}

.task-list-toolbar__filter select,
.task-list-toolbar__filter input {
    min-height: 2rem;
    padding: 0.4rem 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-control);
    background: var(--modal-bg);
    color: var(--text-main);
    font-size: 0.8125rem;
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.task-list-toolbar__filter select {
    width: 6.5rem;
}

.task-list-toolbar__filter select:focus,
.task-list-toolbar__filter input:focus {
    border-color: rgba(38, 40, 43, 0.2);
    box-shadow: 0 0 0 3px rgba(38, 40, 43, 0.08);
}

[data-theme="dark"] .task-list-toolbar__filter select:focus,
[data-theme="dark"] .task-list-toolbar__filter input:focus {
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.06);
}

.task-list-empty {
    padding: 1.25rem;
    border: 1px dashed rgba(38, 40, 43, 0.16);
    border-radius: var(--radius-control);
    color: var(--text-muted);
    text-align: center;
    font-size: 0.875rem;
}

[data-theme="dark"] .task-list-empty {
    border-color: rgba(255, 255, 255, 0.16);
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.task-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.125rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-field);
    background: var(--modal-bg);
    box-shadow: none;
}

.task-row.is-selected {
    border-color: rgba(38, 40, 43, 0.22);
    background: rgba(38, 40, 43, 0.025);
}

[data-theme="dark"] .task-row.is-selected {
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.04);
}

.task-row__select {
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: stretch;
    flex: 0 0 auto;
}

.task-row__checkbox {
    width: 1.125rem;
    height: 1.125rem;
    margin: 0;
    flex: 0 0 auto;
    border-radius: 5px;
    accent-color: var(--btn-black);
    cursor: pointer;
}

.task-row__content {
    min-width: 0;
    flex: 1 1 auto;
}

.task-row__heading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    flex-wrap: wrap;
}

.task-row__title {
    min-width: 0;
    flex: 1 1 auto;
    max-width: 100%;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-main);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    word-break: normal;
}

.task-row__meta {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    flex-wrap: wrap;
    flex: 0 0 auto;
}

.task-row__format,
.task-row__status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.3125rem;
    padding: 0 0.4375rem;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.task-row__format {
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: rgba(38, 40, 43, 0.04);
    color: var(--text-main);
    text-transform: uppercase;
}

[data-theme="dark"] .task-row__format {
    background: rgba(255, 255, 255, 0.05);
}

.task-row__mode-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.3125rem;
    padding: 0 0.4375rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.03);
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-weight: 650;
    white-space: nowrap;
}

[data-theme="dark"] .task-row__mode-tag {
    background: rgba(255, 255, 255, 0.04);
}

.task-row__duration {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.3125rem;
    padding: 0 0.4375rem;
    flex: 0 0 auto;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.03);
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

[data-theme="dark"] .task-row__duration {
    background: rgba(255, 255, 255, 0.04);
}

.task-row__range {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 1.3125rem;
    padding: 0 0.4375rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.03);
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-weight: 650;
    white-space: nowrap;
}

[data-theme="dark"] .task-row__range {
    background: rgba(255, 255, 255, 0.04);
}

.task-row__status {
    border-radius: var(--radius-control);
    background: var(--btn-black);
    color: var(--bg-color);
    gap: 0.3125rem;
}

.task-row__status[data-status="downloading"] {
    gap: 0.3125rem;
}

.task-row__status-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 0.75rem;
    height: 0.75rem;
    flex: 0 0 auto;
    stroke-width: 2.25;
}

.task-row__status-icon svg,
svg.task-row__status-icon {
    width: 0.75rem;
    height: 0.75rem;
    stroke-width: 2.25;
}

.task-row__status-spinner {
    width: 0.625rem;
    height: 0.625rem;
    border: 1.5px solid rgba(255, 255, 255, 0.38);
    border-top-color: currentColor;
    border-radius: 999px;
    flex: 0 0 auto;
    animation: task-status-spinner 0.8s linear infinite;
}

.task-row__status-error-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 0.95rem;
    height: 0.95rem;
    margin-left: 0.25rem;
    padding: 0;
    border: 0;
    border-radius: var(--radius-control);
    background: transparent;
    color: currentColor;
    cursor: pointer;
    opacity: 0.78;
}

.task-row__status-error-btn:hover,
.task-row__status-error-btn:focus-visible {
    opacity: 1;
    background: rgba(255, 255, 255, 0.34);
    outline: none;
}

.task-row__status-error-btn svg {
    width: 0.78rem;
    height: 0.78rem;
    stroke-width: 2.2px;
}

.task-row__status[data-status="paused"] {
    background: rgba(38, 40, 43, 0.08);
    color: var(--text-main);
}

[data-theme="dark"] .task-row__status[data-status="paused"] {
    background: rgba(255, 255, 255, 0.12);
}

.task-row__status[data-status="completed"] {
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
    box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.2);
}

[data-theme="dark"] .task-row__status[data-status="completed"] {
    background: rgba(74, 222, 128, 0.16);
    color: #bbf7d0;
    box-shadow: inset 0 0 0 1px rgba(74, 222, 128, 0.24);
}

.task-row__status[data-status="partial_completed"] {
    background: rgba(245, 158, 11, 0.11);
    color: #92400e;
    box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.22);
}

.task-row__status[data-status="recoverable"] {
    background: rgba(245, 158, 11, 0.11);
    color: #92400e;
    box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.22);
}

[data-theme="dark"] .task-row__status[data-status="partial_completed"] {
    background: rgba(251, 191, 36, 0.16);
    color: #fde68a;
    box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.24);
}

[data-theme="dark"] .task-row__status[data-status="recoverable"] {
    background: rgba(251, 191, 36, 0.16);
    color: #fde68a;
    box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.24);
}

.task-row__status[data-status="failed"] {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.22);
}

[data-theme="dark"] .task-row__status[data-status="failed"] {
    background: rgba(248, 113, 113, 0.16);
    color: #fecaca;
    box-shadow: inset 0 0 0 1px rgba(248, 113, 113, 0.28);
}

.task-row__url {
    margin-top: 0.35rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    min-width: 0;
    max-width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.45;
    text-align: left;
    cursor: pointer;
    transition: color 0.18s ease;
}

.task-row__url-text {
    flex: 0 1 auto;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.task-row__url-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 0.875rem;
    height: 0.875rem;
    color: currentColor;
    opacity: 0.38;
    transition: opacity 0.18s ease, color 0.18s ease;
}

.task-row__url-icon svg {
    width: 0.875rem;
    height: 0.875rem;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.task-row__url:hover {
    color: var(--text-main);
}

.task-row__url:hover .task-row__url-icon,
.task-row__url:focus-visible .task-row__url-icon,
.task-row__url.is-copied .task-row__url-icon {
    opacity: 0.72;
}

.task-row__url:focus-visible {
    outline: none;
    color: var(--text-main);
}

.task-row__url.is-copied {
    color: var(--text-main);
}

[data-theme="dark"] .task-row__url-icon {
    opacity: 0.42;
}

[data-theme="dark"] .task-row__url:hover .task-row__url-icon,
[data-theme="dark"] .task-row__url:focus-visible .task-row__url-icon,
[data-theme="dark"] .task-row__url.is-copied .task-row__url-icon {
    opacity: 0.78;
}

.task-row__progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.375rem 0.5rem 0.125rem;
    margin-left: -0.5rem;
    border-radius: var(--radius-control);
    cursor: pointer;
    transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.task-row__progress:hover {
    background: rgba(38, 40, 43, 0.03);
}

.task-row__progress:focus-visible {
    outline: none;
    background: rgba(38, 40, 43, 0.04);
    box-shadow: 0 0 0 3px rgba(38, 40, 43, 0.12);
}

[data-theme="dark"] .task-row__progress:hover {
    background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .task-row__progress:focus-visible {
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.14);
}

.task-row__progress-track {
    position: relative;
    flex: 1 1 auto;
    height: 0.375rem;
    overflow: hidden;
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.08);
}

[data-theme="dark"] .task-row__progress-track {
    background: rgba(255, 255, 255, 0.1);
}

.task-row__progress-bar {
    position: relative;
    height: 100%;
    border-radius: 4px;
    background: var(--btn-black);
}

.task-row__progress.is-active-download .task-row__progress-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.14) 38%, rgba(255, 255, 255, 0.34) 50%, rgba(255, 255, 255, 0.14) 62%, transparent 100%);
    transform: translateX(-100%);
    animation: task-progress-shimmer 1.8s ease-in-out infinite;
}

[data-theme="dark"] .task-row__progress.is-active-download .task-row__progress-bar::after {
    background: linear-gradient(90deg, transparent 0%, rgba(29, 31, 34, 0.12) 38%, rgba(29, 31, 34, 0.28) 50%, rgba(29, 31, 34, 0.12) 62%, transparent 100%);
}

.task-row__progress:hover .task-row__progress-track,
.task-row__progress:focus-visible .task-row__progress-track {
    background: rgba(38, 40, 43, 0.12);
}

[data-theme="dark"] .task-row__progress:hover .task-row__progress-track,
[data-theme="dark"] .task-row__progress:focus-visible .task-row__progress-track {
    background: rgba(255, 255, 255, 0.14);
}

.task-row__progress-text {
    flex: 0 0 auto;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.task-row__actions {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.125rem;
    flex: 0 0 auto;
}

.task-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    box-shadow: none;
    transform: none;
    cursor: pointer;
    transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.task-action-btn svg {
    width: 1.125rem;
    height: 1.125rem;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.85;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.task-action-btn:hover {
    background: rgba(38, 40, 43, 0.035);
    color: var(--text-main);
    box-shadow: none;
    transform: none;
}

.task-action-btn:active {
    background: rgba(38, 40, 43, 0.06);
    color: var(--text-main);
    box-shadow: none;
    transform: none;
}

.task-action-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--task-delete-focus-ring);
}

@media (max-width: 760px) {
    #app {
        padding: 0 1rem;
    }

    .task-list-toolbar {
        align-items: center;
        justify-content: space-between;
        flex-wrap: nowrap;
        gap: 0.625rem;
    }

    .task-list-toolbar__selection {
        flex: 1 1 auto;
        min-width: 0;
        width: auto;
    }

    .task-list-toolbar__batch {
        width: auto;
    }

    .task-list-toolbar__create {
        display: flex;
        justify-content: flex-end;
        width: auto;
        flex: 0 0 auto;
    }

    .task-cache-status-bar {
        align-items: stretch;
        flex-direction: column;
        gap: 0.625rem;
        margin-top: -0.125rem;
    }

    .task-cache-status-bar__main {
        gap: 0.4rem 0.625rem;
    }

    .task-cache-status-bar__actions {
        justify-content: flex-end;
    }

    .task-list-toolbar__filters {
        display: none;
    }

    #task-list-new-download-btn {
        width: 28px;
        height: 28px;
        padding: 0;
        gap: 0;
        justify-content: center;
        border-radius: 4px;
    }

    #task-list-new-download-btn span {
        display: none;
    }

    .task-row {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr);
        align-items: center;
        padding: 0.95rem 1rem;
        column-gap: 0.75rem;
        row-gap: 0.25rem;
    }

    .task-row__select {
        grid-column: 1;
        grid-row: 1 / 3;
        align-self: center;
        justify-self: start;
        align-items: center;
    }

    .task-row__content {
        grid-column: 2;
        grid-row: 1;
        min-width: 0;
    }

    .task-row__heading {
        align-items: center;
        flex-wrap: nowrap;
    }

    .task-row__format {
        flex: 0 0 auto;
    }

    .task-row__duration {
        flex: 0 0 auto;
    }

    .task-row__title {
        min-width: 0;
        flex: 1 1 auto;
        max-width: 100%;
        white-space: nowrap;
        text-overflow: ellipsis;
        overflow: hidden;
        word-break: normal;
    }

    .task-row__meta {
        display: contents;
    }

    .task-row__range,
    .task-row__mode-tag {
        display: none;
    }

    .task-row__status {
        flex: 0 0 auto;
    }

    .task-row__progress {
        padding: 0.25rem 0.5rem 0.125rem;
    }

    .task-row__actions {
        grid-column: 2;
        grid-row: 2;
        width: 100%;
        justify-content: flex-start;
        align-items: center;
        flex-direction: row;
        flex-wrap: wrap;
        align-self: start;
        margin-top: 0;
    }
}

.app-toast {
    position: fixed;
    left: 50%;
    bottom: 2rem;
    transform: translate(-50%, 10px);
    min-width: 220px;
    max-width: min(92vw, 420px);
    padding: 0.8125rem 1.125rem;
    border-radius: 999px;
    border: 1px solid transparent;
    box-shadow: var(--shadow-surface);
    z-index: 2000;
    font-size: 0.875rem;
    line-height: 1.4;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms ease, transform 220ms ease, background-color 220ms ease, color 220ms ease, border-color 220ms ease;
}

.app-toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

.app-toast.is-info {
    background: var(--modal-shell-bg);
    color: var(--text-main);
    border-color: var(--modal-shell-border);
}

.app-toast.is-success {
    background: var(--btn-black);
    color: var(--bg-color);
    border-color: transparent;
}

.app-toast.is-error {
    background: #fbefef;
    color: #8f3434;
    border-color: rgba(184, 74, 74, 0.16);
}

[data-theme="dark"] .app-toast.is-error {
    background: #3a2628;
    color: #ffb0b0;
    border-color: rgba(255, 154, 154, 0.14);
}

/* Footer */
.app-footer {
    padding: 2.5rem 0;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Modals & Forms */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 220ms ease, backdrop-filter 260ms ease, visibility 0s linear 220ms;
}

.modal-overlay.is-open,
.modal-overlay.is-closing {
    visibility: visible;
    transition: opacity 220ms ease, backdrop-filter 260ms ease, visibility 0s linear 0s;
}

.modal-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
}

.modal-overlay.is-closing {
    opacity: 0;
    pointer-events: none;
    backdrop-filter: blur(0px);
}

.modal {
    background: var(--modal-shell-bg);
    border-radius: var(--radius-surface);
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow-overlay-surface);
    border: 1px solid var(--modal-shell-border);
    overflow: hidden;
}

.modal-panel {
    position: absolute;
    left: 50%;
    top: 50%;
    opacity: 0;
    transform: translate(-50%, calc(-50% + 18px)) scale(0.975);
    transition: opacity 240ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
    pointer-events: none;
    visibility: hidden;
}

.modal-panel.is-active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;
    visibility: visible;
}

.modal-panel.is-preview-overlay {
    z-index: 2;
    box-shadow: var(--shadow-overlay-surface), 0 0 0 9999px rgba(0, 0, 0, 0.24);
}

.modal-overlay.is-closing .modal-panel.is-active {
    opacity: 0;
    transform: translate(-50%, calc(-50% + 12px)) scale(0.985);
}

.modal.hidden { display: none; }

.modal-header {
    padding: 1.125rem 1.25rem 0.95rem 1.5rem;
    border-bottom: 1px solid rgba(38, 40, 43, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    background: var(--modal-header-bg);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

.modal-header h3 {
    font-size: 1rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.modal-body {
    padding: 1.25rem 1.5rem 1.5rem;
}

#details-modal {
    display: flex;
    flex-direction: column;
    width: min(92vw, 960px);
    max-width: 960px;
    max-height: min(92dvh, 920px);
    overflow: hidden;
}

#details-modal .modal-body {
    min-height: 0;
    padding-top: 1.125rem;
    overflow-y: auto;
}

@supports not (height: 100dvh) {
    #details-modal {
        max-height: min(92vh, 920px);
    }
}

.task-fragment-detail {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.task-fragment-detail__header {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.confirm-delete-modal {
    max-width: 420px;
}

.confirm-delete-content {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.875rem;
    align-items: flex-start;
}

.confirm-delete-content__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--radius-control);
    background: rgba(185, 28, 28, 0.08);
    color: #b91c1c;
}

.confirm-delete-content__icon svg {
    width: 1.1rem;
    height: 1.1rem;
}

.confirm-delete-content__copy {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.confirm-delete-content__message {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--text-main);
}

.confirm-delete-content__hint {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-muted);
}

.danger-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 2.35rem;
    padding: 0.55rem 1rem;
    border: 1px solid rgba(185, 28, 28, 0.78);
    border-radius: var(--radius-control);
    background: #b91c1c;
    color: #fff;
    font-weight: 650;
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.danger-btn:hover {
    background: #991b1b;
    border-color: #991b1b;
}

.danger-btn:active {
    transform: translateY(1px);
}

.danger-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.18);
}

[data-theme="dark"] .confirm-delete-content__icon {
    background: rgba(248, 113, 113, 0.12);
    color: #f87171;
}

[data-theme="dark"] .danger-btn {
    background: #dc2626;
    border-color: rgba(248, 113, 113, 0.58);
}

[data-theme="dark"] .danger-btn:hover {
    background: #ef4444;
    border-color: #f87171;
}

.help-modal {
    display: flex;
    flex-direction: column;
    width: min(92vw, 720px);
    max-width: 720px;
    max-height: min(92dvh, 900px);
}

.help-modal .modal-body {
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
}

@supports not (height: 100dvh) {
    .help-modal {
        max-height: min(92vh, 900px);
    }
}

.help-modal__intro {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.7;
}

.help-modal__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.875rem;
}

.help-modal__section {
    min-width: 0;
    padding: 0.875rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: var(--modal-field-bg);
}

.help-modal__section h4 {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-bottom: 0.55rem;
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 750;
}

.help-modal__section h4 svg {
    width: 0.95rem;
    height: 0.95rem;
    color: var(--text-muted);
}

.help-modal__section ol,
.help-modal__section ul {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding-left: 1rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.55;
}

.help-modal__section code,
.help-modal__example code {
    padding: 0.0625rem 0.25rem;
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.06);
    color: var(--text-main);
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 0.78em;
}

[data-theme="dark"] .help-modal__section code,
[data-theme="dark"] .help-modal__example code {
    background: rgba(255, 255, 255, 0.08);
}

.help-modal__example {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    min-width: 0;
    padding: 0.75rem 0.875rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.03);
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.55;
}

[data-theme="dark"] .help-modal__example {
    background: rgba(255, 255, 255, 0.04);
}

.help-modal__example code {
    min-width: 0;
    overflow-wrap: anywhere;
}

.help-modal__feedback {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.03);
}

[data-theme="dark"] .help-modal__feedback {
    background: rgba(255, 255, 255, 0.04);
}

.help-modal__feedback h4 {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-bottom: 0.25rem;
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 750;
}

.help-modal__feedback h4 svg {
    width: 0.95rem;
    height: 0.95rem;
    color: var(--text-muted);
}

.help-modal__feedback p {
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.55;
}

.help-modal__feedback-links {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.5rem;
}

.help-modal__feedback-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 1.85rem;
    padding: 0.25rem 0.55rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: var(--modal-field-bg);
    color: var(--text-main);
    font-size: 0.8125rem;
    font-weight: 650;
    text-decoration: none;
}

.help-modal__feedback-links a:hover {
    border-color: rgba(38, 40, 43, 0.26);
}

[data-theme="dark"] .help-modal__feedback-links a:hover {
    border-color: rgba(255, 255, 255, 0.22);
}

.help-modal__feedback-links svg {
    width: 0.875rem;
    height: 0.875rem;
    color: var(--text-muted);
}

.preview-modal {
    width: min(92vw, 860px);
    max-width: 860px;
    overflow: hidden;
}

.preview-modal .modal-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-top: 1.125rem;
}

.preview-player-shell {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--modal-shell-border);
    border-radius: var(--radius-control);
    background:
        radial-gradient(circle at 18% 12%, rgba(255, 255, 255, 0.08), transparent 28%),
        #0f1115;
}

.preview-video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: min(62vh, 34rem);
    background: #0f1115;
}

.preview-status {
    position: absolute;
    left: 0.75rem;
    bottom: 0.75rem;
    max-width: calc(100% - 1.5rem);
    margin: 0;
    padding: 0.35rem 0.5rem;
    border-radius: var(--radius-control);
    background: rgba(15, 17, 21, 0.72);
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.75rem;
    line-height: 1.35;
    backdrop-filter: blur(10px);
}

.preview-status.hidden {
    display: none;
}

.preview-quality-panel {
    padding: 0.875rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: var(--modal-field-bg);
}

.preview-quality-panel__eyebrow {
    margin: 0 0 0.6rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 650;
    letter-spacing: 0.04em;
}

.preview-quality-panel .download-quality-list {
    max-height: min(34vh, 18rem);
    overflow-y: auto;
}

.task-fragment-detail__title {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    min-width: 0;
    font-size: 1.05rem;
    line-height: 1.35;
    color: var(--text-main);
}

.task-fragment-detail__title-badge {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    min-height: 1.375rem;
    padding: 0 0.4375rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: rgba(38, 40, 43, 0.03);
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1;
    white-space: nowrap;
}

.task-fragment-detail__title-text {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.task-fragment-detail__meta {
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.45;
    word-break: break-word;
}

.task-fragment-detail__url {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    text-align: left;
    cursor: pointer;
    transition: color 0.18s ease;
}

.task-fragment-detail__url:hover,
.task-fragment-detail__url:focus-visible,
.task-fragment-detail__url.is-copied {
    color: var(--text-main);
}

.task-fragment-detail__url:focus-visible {
    outline: none;
}

.task-fragment-detail__url-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 0.875rem;
    height: 0.875rem;
    color: currentColor;
    opacity: 0.38;
    transition: opacity 0.18s ease, color 0.18s ease;
}

.task-fragment-detail__url-icon svg {
    width: 0.875rem;
    height: 0.875rem;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.9;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.task-fragment-detail__url-text {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow-wrap: normal;
}

.task-fragment-detail__url:hover .task-fragment-detail__url-icon,
.task-fragment-detail__url:focus-visible .task-fragment-detail__url-icon,
.task-fragment-detail__url.is-copied .task-fragment-detail__url-icon {
    opacity: 0.72;
}

[data-theme="dark"] .task-fragment-detail__url-icon {
    opacity: 0.42;
}

[data-theme="dark"] .task-fragment-detail__url:hover .task-fragment-detail__url-icon,
[data-theme="dark"] .task-fragment-detail__url:focus-visible .task-fragment-detail__url-icon,
[data-theme="dark"] .task-fragment-detail__url.is-copied .task-fragment-detail__url-icon {
    opacity: 0.78;
}

.task-fragment-detail__quality {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.8125rem;
    line-height: 1.45;
}

.task-fragment-detail__legend-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem 1rem;
}

.task-fragment-detail__legend-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.35rem;
    margin-left: auto;
}

.task-fragment-detail__icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    padding: 0;
    border: 1px solid transparent;
    border-radius: var(--radius-control);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.task-fragment-detail__icon-btn:hover {
    background: rgba(38, 40, 43, 0.045);
    border-color: rgba(38, 40, 43, 0.08);
    color: var(--text-main);
}

.task-fragment-detail__icon-btn.is-disabled {
    color: rgba(38, 40, 43, 0.34);
}

.task-fragment-detail__icon-btn.is-disabled:hover {
    background: rgba(38, 40, 43, 0.025);
    border-color: rgba(38, 40, 43, 0.05);
    color: rgba(38, 40, 43, 0.48);
}

.task-fragment-detail__icon-btn svg {
    width: 1.05rem;
    height: 1.05rem;
}

[data-theme="dark"] .task-fragment-detail__icon-btn:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .task-fragment-detail__icon-btn.is-disabled {
    color: rgba(255, 255, 255, 0.34);
}

[data-theme="dark"] .task-fragment-detail__icon-btn.is-disabled:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.52);
}

.task-fragment-detail__summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.5rem;
    padding: 0.6875rem 0.8125rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.025);
}

.task-fragment-detail__metric {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-height: 0;
    padding: 0;
    border: 0;
    background: transparent;
}

.task-fragment-detail__metric dt {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.35;
}

.task-fragment-detail__metric dt {
    font-size: 0.6875rem;
}

.task-fragment-detail__metric dd {
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main);
}

.task-fragment-detail__metric dd {
    font-size: 1rem;
}

.task-fragment-detail__diagnostics {
    min-width: 0;
}

.task-fragment-detail__diagnostics-summary {
    display: inline-flex;
    align-items: center;
    min-height: 1.75rem;
    padding: 0 0.25rem;
    border-radius: var(--radius-control);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1.35;
    user-select: none;
}

.task-fragment-detail__diagnostics-summary:hover,
.task-fragment-detail__diagnostics-summary:focus-visible {
    color: var(--text-main);
    background: rgba(38, 40, 43, 0.04);
}

.task-fragment-detail__diagnostics-summary:focus-visible {
    outline: 2px solid rgba(38, 40, 43, 0.22);
    outline-offset: 2px;
}

.task-fragment-detail__diagnostics-body {
    margin-top: 0.5rem;
}

.task-fragment-detail__context {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.45rem 0.75rem;
    min-width: 0;
    margin: 0;
    padding: 0.6875rem 0.8125rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.02);
}

.task-fragment-detail__section-title {
    margin: 0 0 0.55rem;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
}

.task-fragment-detail__context-item {
    min-width: 0;
}

.task-fragment-detail__context-item dt {
    margin: 0 0 0.15rem;
    font-size: 0.6875rem;
    line-height: 1.3;
    color: var(--text-muted);
}

.task-fragment-detail__context-item dd {
    margin: 0;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.8125rem;
    font-weight: 650;
    line-height: 1.35;
    color: var(--text-main);
}

.task-fragment-detail__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.875rem;
    align-items: center;
}

.task-fragment-detail__legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.35;
}

.task-fragment-detail__legend-swatch {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 999px;
    flex: 0 0 auto;
    border: 1px solid transparent;
}

.task-fragment-detail__legend-swatch.is-idle {
    background: #e5e7eb;
    border-color: #d1d5db;
}

.task-fragment-detail__legend-swatch.is-downloading {
    background: #6b7280;
    border-color: #4b5563;
}

.task-fragment-detail__legend-swatch.is-failed {
    background: #ef4444;
    border-color: #dc2626;
}

.task-fragment-detail__legend-swatch.is-success {
    background: #26282b;
    border-color: #111827;
}

[data-theme="dark"] .task-fragment-detail__legend-swatch.is-idle {
    background: #3f4650;
    border-color: #596272;
}

[data-theme="dark"] .task-fragment-detail__legend-swatch.is-downloading {
    background: #8b949e;
    border-color: #a6adb7;
}

[data-theme="dark"] .task-fragment-detail__legend-swatch.is-success {
    background: #f2f4f7;
    border-color: #ffffff;
}

.task-fragment-grid-scroll {
    height: min(54vh, 30rem);
    max-height: min(54vh, 30rem);
    overflow-y: auto;
    padding: 1.125rem 1.25rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.02);
}

.task-fragment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(14px, 14px));
    gap: 0.3125rem;
    align-content: start;
    justify-content: center;
}

.task-fragment-cell {
    position: relative;
    width: 14px;
    height: 14px;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 3px;
    background: #e5e7eb;
    cursor: pointer;
    transition: transform 0.18s ease, opacity 0.18s ease, box-shadow 0.18s ease;
}

.task-fragment-cell:hover {
    transform: scale(1.12);
    box-shadow: 0 0 0 1px rgba(38, 40, 43, 0.12);
}

.task-fragment-cell:focus-visible {
    outline: none;
    transform: scale(1.12);
    box-shadow: 0 0 0 3px rgba(38, 40, 43, 0.12);
}

[data-theme="dark"] .task-fragment-cell:focus-visible {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.14);
}

.app-tooltip {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1100;
    max-width: min(18rem, calc(100vw - 24px));
    padding: 0.3rem 0.45rem;
    border-radius: var(--radius-control);
    background: var(--rock-black);
    color: #ffffff;
    font-size: 0.6875rem;
    line-height: 1.2;
    white-space: normal;
    overflow-wrap: anywhere;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    box-shadow: 0 12px 24px rgba(20, 23, 27, 0.18);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.app-tooltip.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.task-fragment-cell.is-idle {
    background: #e5e7eb;
    border-color: #d1d5db;
}

.task-fragment-cell.is-downloading {
    background: #6b7280;
    border-color: #4b5563;
    box-shadow: 0 0 0 1px rgba(38, 40, 43, 0.18);
    animation: task-fragment-cell-pulse 1.1s ease-in-out infinite;
}

.task-fragment-cell.is-retrying {
    background: #6b7280;
    border-color: #4b5563;
    box-shadow: 0 0 0 1px rgba(38, 40, 43, 0.18);
    animation: task-fragment-cell-pulse 1.1s ease-in-out infinite;
}

.task-fragment-cell.is-failed {
    background: #ef4444;
    border-color: #dc2626;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24);
}

.task-fragment-cell.is-failed:hover {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24), 0 0 0 1px rgba(38, 40, 43, 0.16);
}

.task-fragment-cell.is-failed:focus-visible {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24), 0 0 0 3px rgba(38, 40, 43, 0.12);
}

[data-theme="dark"] .task-fragment-cell.is-failed:focus-visible {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24), 0 0 0 3px rgba(255, 255, 255, 0.14);
}

.task-fragment-cell.is-success {
    background: #26282b;
    border-color: #111827;
}

[data-theme="dark"] .task-fragment-cell.is-idle {
    background: #3f4650;
    border-color: #596272;
}

[data-theme="dark"] .task-fragment-cell.is-downloading {
    background: #8b949e;
    border-color: #a6adb7;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] .task-fragment-cell.is-retrying {
    background: #8b949e;
    border-color: #a6adb7;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] .task-fragment-cell.is-success {
    background: #f2f4f7;
    border-color: #ffffff;
}

@keyframes task-fragment-cell-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.58; }
}

.form-item {
    margin-bottom: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.875rem;
}

.form-item > label:not(.form-checkbox) {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.375rem;
    text-transform: uppercase;
}

.form-item input, .form-item select {
    border-radius: var(--radius-field);
}

.form-item input:not([type="checkbox"]), .form-item select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-field);
    outline: none;
    font-size: 0.875rem;
    background: var(--modal-field-bg);
    color: var(--text-main);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.72);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

[data-theme="dark"] .form-item input:not([type="checkbox"]),
[data-theme="dark"] .form-item select {
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}

.form-item input:not([type="checkbox"]):focus,
.form-item select:focus {
    border-color: rgba(38, 40, 43, 0.18);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.78), 0 0 0 4px rgba(38, 40, 43, 0.06);
}

[data-theme="dark"] .form-item input:not([type="checkbox"]):focus,
[data-theme="dark"] .form-item select:focus {
    border-color: rgba(255,255,255,0.16);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 0 0 4px rgba(255,255,255,0.05);
}

.form-item.has-error input:not([type="checkbox"]) {
    border-color: rgba(184, 63, 63, 0.42);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.72), 0 0 0 4px rgba(184, 63, 63, 0.08);
}

[data-theme="dark"] .form-item.has-error input:not([type="checkbox"]) {
    border-color: rgba(255, 135, 135, 0.34);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 0 0 4px rgba(255, 135, 135, 0.08);
}

.form-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    margin-bottom: 0;
    padding: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    color: var(--text-main);
    box-shadow: none;
    cursor: pointer;
}

.form-checkbox input {
    display: block;
    width: 1rem;
    height: 1rem;
    margin: 0;
    flex: 0 0 auto;
    accent-color: var(--btn-black);
    cursor: pointer;
}

.form-checkbox span {
    display: inline-flex;
    align-items: center;
    min-height: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1;
}

.form-choice-group {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.form-choice {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    justify-content: flex-start;
    min-height: 1.25rem;
    padding: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    color: var(--text-main);
    cursor: pointer;
    transition: color 0.2s ease;
}

.form-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.form-choice-indicator {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 0.875rem;
    height: 0.875rem;
    border-radius: 999px;
    border: 1.5px solid rgba(38, 40, 43, 0.3);
    background: transparent;
    flex: 0 0 auto;
    transition: border-color 0.2s ease;
}

.form-choice-indicator::after {
    content: "";
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 999px;
    background: var(--btn-black);
    transform: scale(0);
    transition: transform 0.2s ease;
}

[data-theme="dark"] .form-choice-indicator {
    border-color: rgba(255, 255, 255, 0.32);
}

[data-theme="dark"] .form-choice-indicator::after {
    background: #f2f4f1;
}

.form-choice span {
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.3;
}

.form-choice:has(input:checked) {
    color: var(--text-main);
}

[data-theme="dark"] .form-choice:has(input:checked) {
    color: var(--text-main);
}

.form-choice:has(input:checked) span:last-child {
    font-weight: 500;
}

.form-choice:has(input:checked) .form-choice-indicator {
    border-color: var(--btn-black);
}

.form-choice:has(input:checked) .form-choice-indicator::after {
    transform: scale(1);
}

[data-theme="dark"] .form-choice:has(input:checked) .form-choice-indicator {
    border-color: #f2f4f1;
}

.download-quality-list,
.force-merge-mode-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.download-range-summary,
.force-merge-summary {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-control);
    background: var(--modal-field-bg);
}

.download-range-summary__eyebrow,
.force-merge-summary__eyebrow {
    margin: 0;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.download-range-summary__title,
.force-merge-summary__title {
    margin: 0;
    font-size: 1rem;
    line-height: 1.35;
    color: var(--text-main);
}

.download-range-summary__meta,
.force-merge-summary__meta {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.55;
    color: var(--text-muted);
}

.download-range-summary__meta strong,
.force-merge-summary__meta strong {
    color: var(--text-main);
}

.force-merge-summary__number {
    font-weight: 750;
    font-variant-numeric: tabular-nums;
}

.download-range-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.875rem;
    align-items: start;
}

.download-range-preview {
    margin: 0.625rem 0 0;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-muted);
}

.download-range-preview strong {
    color: var(--text-main);
}

.download-quality-option,
.force-merge-option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border: 1px solid var(--modal-field-border);
    border-radius: var(--radius-field);
    background: var(--modal-field-bg);
    color: var(--text-main);
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.download-quality-option input,
.force-merge-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.download-quality-option:hover,
.force-merge-option:hover {
    border-color: rgba(38, 40, 43, 0.18);
    box-shadow: var(--shadow-control);
}

.download-quality-option:has(input:checked),
.force-merge-option:has(input:checked) {
    border-color: var(--btn-black);
    background: rgba(38, 40, 43, 0.06);
    box-shadow: var(--shadow-control);
}

.download-quality-option:has(input:checked) {
    background: rgba(38, 40, 43, 0.06);
}

.download-quality-option:has(input:checked) .form-choice-indicator,
.force-merge-option:has(input:checked) .form-choice-indicator {
    border-color: var(--btn-black);
}

.download-quality-option:has(input:checked) .form-choice-indicator::after,
.force-merge-option:has(input:checked) .form-choice-indicator::after {
    transform: scale(1);
}

.download-quality-option:has(input:checked) .form-choice-indicator::after {
    transform: scale(1);
}

.download-quality-option__content,
.force-merge-option__content {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 0;
}

.download-quality-option__title,
.force-merge-option__title {
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.3;
}

.download-quality-option__meta,
.force-merge-option__meta {
    font-size: 0.8125rem;
    line-height: 1.45;
    color: var(--text-muted);
}

.download-quality-option__badge,
.force-merge-option__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    align-self: start;
    min-height: 1.375rem;
    margin-top: 0.05rem;
    padding: 0 0.5rem;
    border-radius: var(--radius-control);
    background: rgba(38, 40, 43, 0.08);
    color: var(--text-main);
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
}

.download-quality-option__badge {
    align-self: start;
    min-height: 1.375rem;
    font-size: 0.6875rem;
}

[data-theme="dark"] .download-quality-option:hover,
[data-theme="dark"] .force-merge-option:hover {
    border-color: rgba(255, 255, 255, 0.16);
}

[data-theme="dark"] .download-quality-option:has(input:checked),
[data-theme="dark"] .force-merge-option:has(input:checked) {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .download-quality-option:has(input:checked) .form-choice-indicator,
[data-theme="dark"] .force-merge-option:has(input:checked) .form-choice-indicator {
    border-color: #f2f4f1;
}

[data-theme="dark"] .download-quality-option__badge,
[data-theme="dark"] .force-merge-option__badge {
    background: rgba(255, 255, 255, 0.09);
}

.force-merge-option.is-disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.form-help {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--text-muted);
}

.form-note {
    margin-top: 0.625rem;
    padding: 0.75rem 0.875rem;
    border: 1px dashed rgba(38, 40, 43, 0.14);
    border-radius: var(--radius-field);
    background: rgba(38, 40, 43, 0.03);
    font-size: 0.75rem;
    line-height: 1.55;
    color: var(--text-muted);
}

.form-note.is-warning {
    border-style: solid;
    border-color: rgba(184, 74, 74, 0.24);
    background: rgba(184, 74, 74, 0.06);
    color: #8d3434;
}

[data-theme="dark"] .form-note {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .form-note.is-warning {
    border-color: rgba(255, 118, 118, 0.28);
    background: rgba(255, 118, 118, 0.08);
    color: #ffabab;
}

.form-error {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    line-height: 1.5;
    color: #b84a4a;
}

[data-theme="dark"] .form-error {
    color: #ff9a9a;
}

.modal-footer {
    padding: 1rem 1.5rem 1.25rem;
    border-top: 1px solid rgba(38, 40, 43, 0.06);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background: var(--modal-footer-bg);
}

[data-theme="dark"] .modal-footer {
    border-top-color: rgba(255, 255, 255, 0.06);
}

.modal-close-btn {
    width: 34px;
    height: 34px;
    border: 1px solid transparent;
    border-radius: var(--radius-control);
    background: transparent;
    color: var(--modal-close-color);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    box-shadow: none;
    transform: none;
    transition: background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.modal-close-btn:hover {
    background: var(--modal-close-hover-bg);
    border-color: var(--modal-close-border);
    transform: none;
    box-shadow: none;
}

.modal-close-btn:active {
    background: var(--modal-close-hover-bg);
    border-color: var(--modal-close-border);
    transform: none;
    box-shadow: none;
}

.modal-close-btn:focus-visible {
    outline: none;
    background: var(--modal-close-hover-bg);
    border-color: var(--modal-close-border);
    box-shadow: 0 0 0 4px var(--modal-close-focus-ring);
}

.modal-close-btn svg {
    width: 16px !important;
    height: 16px !important;
    stroke-width: 2.2px;
}

.primary-btn {
    background: var(--btn-black);
    color: var(--bg-color);
    border: none;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-control);
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-width: 6.5rem;
}

.secondary-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-control);
    cursor: pointer;
}

.primary-btn:disabled,
.secondary-btn:disabled {
    cursor: default;
    opacity: 0.6;
}

.button-inline-spinner {
    width: 0.75rem;
    height: 0.75rem;
    border: 1.5px solid rgba(255, 255, 255, 0.38);
    border-top-color: currentColor;
    border-radius: 999px;
    flex: 0 0 auto;
    animation: task-status-spinner 0.8s linear infinite;
}

.hidden { display: none !important; }

@keyframes task-status-spinner {
    to {
        transform: rotate(360deg);
    }
}

@keyframes task-progress-shimmer {
    to {
        transform: translateX(100%);
    }
}

@media (prefers-reduced-motion: reduce) {
    .modal-overlay,
    .modal-panel {
        transition-duration: 1ms;
    }

    .modal-panel,
    .modal-panel.is-active,
    .modal-overlay.is-closing .modal-panel.is-active {
        transform: translate(-50%, -50%);
    }

    .task-row__status-spinner {
        animation: none;
    }

    .task-row__progress.is-active-download .task-row__progress-bar::after {
        animation: none;
    }

    .task-fragment-cell,
    .app-tooltip {
        transition: none;
    }

    .task-fragment-cell:hover,
    .task-fragment-cell:focus-visible {
        transform: none;
    }

    .task-fragment-cell.is-downloading {
        animation: none;
    }

    .task-fragment-cell.is-retrying {
        animation: none;
    }
}

@media (max-width: 720px) {
    .help-modal__grid {
        grid-template-columns: 1fr;
    }

    .help-modal__example {
        flex-direction: column;
    }

    #details-modal {
        width: min(96vw, 680px);
    }

    .download-range-fields {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .task-fragment-detail__summary {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .task-fragment-detail__context {
        grid-template-columns: 1fr;
    }

    .task-fragment-grid-scroll {
        height: min(48vh, 22rem);
        max-height: min(48vh, 22rem);
        padding: 1rem 0.875rem 0.4375rem;
    }

    .task-fragment-grid {
        grid-template-columns: repeat(auto-fill, minmax(16px, 16px));
        gap: 0.25rem;
    }

    .task-fragment-cell {
        width: 16px;
        height: 16px;
    }
}