/* ============================================================
   LearnWords AI -- Components
   Reusable building blocks: layout, buttons, cards, modals,
   lists, badges, animations. Reads only design tokens from
   tokens.css; relies on reset.css for box-sizing and scrollbars.
   ============================================================ */
/* --- App Container --- */
.tg-app {
    width: 100%;
    min-height: 100vh;
    position: relative;
}

/* --- Page Header ---
   Sticky title row. Exposes its own height as --page-header-h so dependant
   sticky elements (e.g. .controls-bar) can chain off it without hardcoding 60px. */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    /* Right padding reserves room for the fixed top-right "+" FAB so right-aligned
       header actions (CSV export, etc.) never sit underneath it. */
    padding: 16px var(--fab-inset-right) 8px 16px;
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg);
    backdrop-filter: blur(20px);
    --page-header-h: 60px;
}

/* The FAB grows on tablets/desktop (44px @ right:18px) — widen the reservation. */
@media (min-width: 768px) {
    .page-header { padding-right: calc(var(--safe-right) + 74px); }
}

.page-header h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}

.header-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

/* Dictionary: place the CSV export right next to the "My Dictionary" title
   instead of pushing it to the far right under the "+" FAB (#122). Scoped to
   .dictionary-page so other pages keep their right-aligned header actions. */
.dictionary-page .page-header {
    justify-content: flex-start;
}
.dictionary-page .page-header h1 {
    flex: 0 1 auto;
}

/* On the narrowest phones the CSV label can crowd the title — keep just the icon. */
@media (max-width: 380px) {
    .btn-export {
        padding: 8px 12px;
    }
    .btn-export .csv-label {
        display: none;
    }
}

/* --- Buttons --- */
.btn-export {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid var(--card-border);
}

.btn-export:hover {
    background: var(--card-hover);
}

.btn-export:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-export .icon {
    font-size: 16px;
}

/* --- Tab Bar --- */
.tab-bar {
    display: flex;
    gap: 4px;
    padding: 0 12px;
    margin-bottom: 8px;
}

.tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}

.tab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
    opacity: 0;
    transform: scaleX(0);
    transition: all var(--transition);
}

.tab.active {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
}

.tab.active::after {
    opacity: 1;
    transform: scaleX(1);
}

.tab .badge {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    background: rgba(var(--on-surface-rgb), 0.06);
    color: var(--hint);
}

.tab.active .badge {
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent);
}

/* --- Phrase type sub-filter --- */
.phrase-type-bar {
    display: flex;
    gap: 6px;
    padding: 0 12px 8px;
}

.phrase-type-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border: 1px solid transparent;
    border-radius: 20px;
    background: rgba(var(--on-surface-rgb), 0.04);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.phrase-type-btn.active {
    background: rgba(var(--accent-rgb), 0.12);
    border-color: rgba(var(--accent-rgb), 0.3);
    color: var(--accent);
}

.badge-small {
    font-size: 10px;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 8px;
    background: rgba(var(--on-surface-rgb), 0.06);
    color: var(--hint);
}

.phrase-type-btn.active .badge-small {
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent);
}

/* --- Controls Bar ---
   Sticks just below .page-header. Uses --page-header-h (set by the header itself
   to its own height) instead of a hardcoded 60px — survives a wrapping h1 or any
   future header height change without overlapping. */
.controls-bar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg);
    position: sticky;
    top: var(--page-header-h, 60px);
    z-index: 9;
}

/* Wrap onto a second row on narrow screens (≤480px) so bulk-actions + sort + filter
   never get squished into a single overflowing strip. */
.controls-main {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    row-gap: 10px;
}

.selection-group {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-right: 12px;
    border-right: 1px solid var(--card-border);
    flex-shrink: 0;
}

/* Once the row wraps, drop the divider — it'd float in mid-air without a sibling. */
@media (max-width: 540px) {
    .selection-group {
        border-right: none;
        padding-right: 0;
    }
}

.bulk-actions-wrapper {
    display: flex;
    align-items: center;
    min-width: 80px;
    /* Reserve space for buttons */
}

.bulk-actions-mini {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 4px;
    animation: fadeIn 0.15s ease-out;
}

.mini-action-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 8px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    /* Buttons don't inherit color from their parent in the UA stylesheet, so without
       this the SVG icon (stroke="currentColor") falls back to the system "ButtonText"
       and becomes invisible on dark themes. */
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all var(--transition);
}

.mini-action-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.mini-action-btn.mastery-mixed {
    opacity: 0.5;
    background: rgba(var(--success-rgb), 0.05);
}

.mini-action-btn.mastery-all {
    color: var(--success);
    background: rgba(var(--success-rgb), 0.10);
    border-color: rgba(var(--success-rgb), 0.30);
}

.mini-action-btn.mini-action-btn-danger {
    color: var(--destructive);
    border-color: rgba(var(--destructive-rgb), 0.30);
}

.mini-action-btn.mini-action-btn-danger:hover {
    background: rgba(var(--destructive-rgb), 0.12);
}

.sort-wrapper {
    position: relative;
    flex: 1;
    min-width: 160px;
    /* Slightly increased for stability */
    max-width: 220px;
}

.controls-top {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
    justify-content: flex-end;
    /* Align right controls */
}

.filters-overlay {
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 8;
}

/* The filters drawer is composed of N filter-group cells + a filter-actions cell.
   Wide screens lay them in a single row; ≤540px stacks each group on its own row
   so the labels stay legible and the apply/reset row doesn't collide with selects. */
.filters-panel {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    background: var(--bg-secondary);
    padding: 12px 14px;
    border-radius: var(--radius);
    margin-top: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    animation: slideDown 0.2s ease-out;
    position: relative;
    z-index: 15;
    flex-wrap: wrap;
}

.filter-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-left: auto;
}

@media (max-width: 540px) {
    .filters-panel {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-actions {
        margin-left: 0;
        justify-content: flex-end;
    }
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 110px;
}

.filter-group label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--hint);
}


.btn-apply-filters {
    padding: 8px 20px;
    background: var(--accent);
    color: var(--button-text);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    height: 38px;
    transition: all var(--transition);
}

.btn-apply-filters:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-reset-filters {
    padding: 8px 16px;
    background: transparent;
    color: var(--text-secondary, #707579);
    border: 1px solid var(--card-border, rgba(0, 0, 0, 0.1));
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    height: 38px;
    transition: all var(--transition);
}

.btn-reset-filters:hover {
    background: var(--card-hover);
    color: var(--text);
}

.select-all-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 10px 16px;
    background: rgba(var(--accent-rgb), 0.1);
    border-bottom: 1px solid var(--card-border);
    font-size: 13px;
    color: var(--text);
    animation: fadeIn 0.2s ease;
}

.btn-link {
    background: none;
    border: none;
    color: var(--accent);
    text-decoration: underline;
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;
}

.btn-link:hover {
    color: var(--text);
}

@media (max-width: 480px) {
    .tab {
        padding: 10px 8px;
        gap: 4px;
    }

    .tab-icon {
        font-size: 14px;
    }
}

.btn-filter.active {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
}

.btn-filter {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border-radius: 12px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.select-all-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    cursor: pointer;
}

/* --- Custom Checkbox --- */
.custom-checkbox {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    /* High contrast border that works on both dark and light bg */
    border: 2px solid #888;
    border-radius: 6px;
    background: var(--card-bg);
    cursor: pointer;
    position: relative;
    transition: all var(--transition);
    flex-shrink: 0;
}

@media (prefers-color-scheme: light) {
    .custom-checkbox {
        border-color: #999;
    }
}

:root.dark .custom-checkbox {
    border-color: #666;
}

@media (prefers-color-scheme: light) {
    :root:not(.dark) .custom-checkbox {
        border-color: #abb0b5;
    }
}

.custom-checkbox:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.custom-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.mastery-check {
    color: var(--success);
    font-size: 18px;
    font-weight: bold;
}

.mastery-check.inactive {
    opacity: 0.3;
    filter: grayscale(1);
}

/* --- Word List --- */
.word-list,
.phrase-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 0 8px;
    /* Ensure the list doesn't have its own scroll fixed height */
}

/* Sentinel for infinite scroll */
#infinite-scroll-sentinel,
#infinite-scroll-sentinel-phrases {
    height: 40px;
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- Word Item --- */
.word-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    padding: 13px 14px;
    border-radius: var(--radius);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
    transition: border-color var(--transition), box-shadow var(--transition);
    animation: fadeIn 0.3s ease;
    gap: 8px;
}

/* Whole-row background hover was removed (caused blinking); a border tint is stable. */
.word-item:hover { border-color: rgba(var(--on-surface-rgb), 0.18); }

.word-item.selected {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.07);
    box-shadow: 0 6px 18px -10px rgba(var(--accent-rgb), 0.6);
}

.word-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.word-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.word-info {
    flex: 1;
    min-width: 0;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 8px;
    transition: background var(--transition);
}

.word-info:hover {
    background: var(--card-hover);
}

/* Word row main text — body size (14px) with row-level emphasis via weight, NOT size.
   The lw-type-title-s class (15px) used to be applied in markup and the rule below
   was bumping it to 17px — the row read as a card header rather than a list item.
   See VOCAB_PROGRESS_GUIDE.md §5. */
.word-text {
    font-size: var(--type-body-size);
    line-height: 20px;
    font-weight: 600;
    letter-spacing: -0.005em;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.word-translation {
    font-size: var(--type-body-s-size);
    line-height: var(--type-body-s-line);
    color: var(--text-secondary);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.word-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    flex-wrap: wrap;
}

.freq-badge,
.stage-badge,
.difficulty-badge,
.source-word {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    white-space: nowrap;
    line-height: 1.5;
}

.freq-badge {
    color: var(--text-secondary);
    background: rgba(var(--on-surface-rgb), 0.04);
}

.freq-badge.dim {
    opacity: 0.5;
}

.stage-badge.srs {
    color: var(--success);
    background: rgba(76, 175, 80, 0.12);
}

.stage-badge.learning {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.12);
}

.difficulty-badge {
    color: var(--warning);
    background: rgba(255, 152, 0, 0.12);
}

.source-word {
    color: var(--hint);
    background: rgba(var(--on-surface-rgb), 0.04);
}

.word-item-actions,
.phrase-item-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: transparent;
    /* Buttons don't inherit color from their parent in the UA stylesheet, so without
       this the SVG icon (stroke="currentColor") falls back to the system "ButtonText"
       and becomes invisible on dark themes. */
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.action-btn:hover {
    background: rgba(var(--on-surface-rgb), 0.08);
    color: var(--text);
}

.action-btn.audio {
    color: var(--accent);
    opacity: 0.8;
}

.action-btn.audio:hover {
    opacity: 1;
    background: rgba(var(--accent-rgb), 0.1);
}

.action-btn.delete {
    color: var(--destructive);
}

.action-btn.delete:hover {
    background: rgba(var(--destructive-rgb), 0.12);
    color: var(--destructive);
}

.action-btn.learned:hover {
    background: rgba(var(--success-rgb), 0.10);
}

/* --- Phrase Item --- */
.phrase-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    padding: 13px 14px;
    border-radius: var(--radius);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow);
    transition: border-color var(--transition), box-shadow var(--transition);
    animation: fadeIn 0.3s ease;
    gap: 8px;
}

.phrase-item:hover { border-color: rgba(var(--on-surface-rgb), 0.18); }

.phrase-item.selected {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.07);
    box-shadow: 0 6px 18px -10px rgba(var(--accent-rgb), 0.6);
}

.phrase-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.phrase-info {
    flex: 1;
    min-width: 0;
    /* Phrase info is not currently clickable for opening a card,
       but we keep it consistent with word-info if it ever becomes so.
       For now, we just follow the user request to limit row-level clicks. */
}

/* Phrase row main text — same body size as .word-text. Phrases can wrap to 2 lines
   without becoming heading-sized. See VOCAB_PROGRESS_GUIDE.md §5. */
.phrase-text {
    font-size: var(--type-body-size);
    line-height: 20px;
    font-weight: 600;
    letter-spacing: -0.005em;
    color: var(--text);
    /* Long phrases get 2-line clamp so a single long row doesn't blow up the list. */
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.phrase-translation {
    font-size: var(--type-body-s-size);
    line-height: var(--type-body-s-line);
    color: var(--text-secondary);
    margin-top: 3px;
    /* Wrap the full translation onto as many lines as needed instead of clamping it — a
       clamp (even at 2 lines) still hid the tail of longer translations and the user
       couldn't read them (#123). The phrase-text above stays 2-line-clamped; the
       translation is the payload, so it gets to breathe. */
    white-space: normal;
    overflow-wrap: anywhere;
}


.phrase-meta {
    display: flex;
    gap: 6px;
    margin-top: 4px;
    flex-wrap: wrap;
}

/* --- Stage Indicator (legacy — kept until all callers migrate to .lw-prog) --- */
.stage-indicator {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
}

/* ============================================================
   Word progress indicator (.lw-prog)
   ------------------------------------------------------------
   Four mutually-exclusive visual states for a vocab item:
     • .lw-prog--learning  → funnel stages 1..6  (segmented arc + center number)
     • .lw-prog--srs       → in SRS, not mastered (continuous arc + % + ticks)
     • .lw-prog--manual    → user marked as known  (filled disc + check + pin)
     • .lw-prog--auto      → algorithm auto-mastered (soft disc + check + sparkle)
   Driven entirely by --srs / --accent / --success theme tokens.
   ============================================================ */
.lw-prog {
    --lw-prog-size: 34px;
    width:  var(--lw-prog-size);
    height: var(--lw-prog-size);
    border-radius: 999px;
    position: relative;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    line-height: 1;
}

/* The ring background SVG fills the pill behind the centered label.
   Scoped to learning + srs only — the badge svgs (check, sparkle) are
   centered by parent flex and must NOT be stretched to 100% by an
   over-broad rule. */
.lw-prog--learning > svg,
.lw-prog--srs > svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Centered label/check sits above the background ring. */
.lw-prog__label {
    position: relative;
    z-index: 2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lw-prog--sm { --lw-prog-size: 26px; }
.lw-prog--md { --lw-prog-size: 34px; }
.lw-prog--lg { --lw-prog-size: 56px; }

/* --- Learning — segmented arc + stage number --- */
.lw-prog--learning           { background: rgba(var(--on-surface-rgb), 0.045); }
.lw-prog--learning.is-new    { background: var(--accent-soft); }
.lw-prog--learning.is-done   { background: rgba(var(--accent-rgb), 0.14); }

.lw-prog--learning .lw-prog__label {
    font-size: 11px;
    color: var(--text);
}
.lw-prog--learning.is-new .lw-prog__label {
    color: var(--accent-strong, var(--accent));
}
.lw-prog--learning.lw-prog--sm .lw-prog__label { font-size: 10px; }
.lw-prog--learning.lw-prog--lg .lw-prog__label { font-size: 16px; }

/* --- SRS — continuous arc + ticks + percent --- */
.lw-prog--srs         { background: rgba(var(--srs-rgb), 0.09); }
.lw-prog--srs.is-done { background: rgba(var(--srs-rgb), 0.18); }

/* Stroke colors live here (CSS) and NOT on the SVG element's stroke= attribute,
   because some browsers don't resolve var() inside SVG presentation attributes
   on <circle>/<line>. The track is bumped from the original 24% to 35% so it
   stays visibly distinct from the pill's 9% bg tint on every theme. */
.lw-prog--srs__track    { stroke: rgba(var(--srs-rgb), 0.35); }
.lw-prog--srs__progress { stroke: var(--srs); }
.lw-prog--srs__tick     { stroke: rgba(var(--srs-rgb), 0.45); }

.lw-prog--srs .lw-prog__label {
    font-size: 9.5px;
    color: var(--srs);
    font-family: var(--font-mono, var(--font));
    letter-spacing: -0.04em;
}
.lw-prog--srs.lw-prog--sm .lw-prog__label { font-size: 8.5px; }
.lw-prog--srs.lw-prog--lg .lw-prog__label { font-size: 13px; }

/* --- Manual learned — filled disc + check + pin corner --- */
.lw-prog--manual {
    background: var(--success);
    color: #fff;
    box-shadow:
        0 1px 3px rgba(var(--success-rgb), 0.35),
        inset 0 -1px 0 rgba(0, 0, 0, 0.06);
}

/* Check rides on the parent's flex centering — no absolute positioning,
   so it stays in the middle regardless of size. */
.lw-prog--manual .lw-prog__check {
    position: relative;
    z-index: 2;
    width: 56%;
    height: 56%;
    stroke: currentColor;
    stroke-width: 3;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lw-prog--manual::after {
    content: "";
    position: absolute;
    top: -1px; right: -1px;
    width: 32%; height: 32%;
    min-width: 10px; min-height: 10px;
    border-radius: 999px;
    background: var(--bg);
    box-shadow: 0 0 0 1px rgba(var(--on-surface-rgb), 0.04);
    z-index: 3;
}
.lw-prog--manual::before {
    content: "";
    position: absolute;
    top: 7%; right: 7%;
    width: 18%; height: 18%;
    min-width: 5px; min-height: 5px;
    border-radius: 999px;
    background: var(--success);
    z-index: 4;
}

/* --- Auto learned — soft disc + dashed ring + sparkle corner --- */
.lw-prog--auto {
    background: rgba(var(--success-rgb), 0.12);
    color: var(--success);
}

/* Dashed ring fills the pill (layer 1). */
.lw-prog--auto .lw-prog__ring {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.lw-prog--auto .lw-prog__ring circle {
    fill: none;
    stroke: var(--success);
    stroke-width: 1.3;
    stroke-dasharray: 2.4 2.8;
}

/* Check rides on parent flex centering (layer 2). */
.lw-prog--auto .lw-prog__check {
    position: relative;
    z-index: 2;
    width: 46%;
    height: 46%;
    stroke: currentColor;
    stroke-width: 2.6;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.lw-prog--auto .lw-prog__sparkle {
    position: absolute;
    top: -2px; right: -2px;
    width: 36%; height: 36%;
    min-width: 11px; min-height: 11px;
    border-radius: 999px;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
    box-shadow: 0 0 0 1px rgba(var(--on-surface-rgb), 0.04);
    z-index: 3;
}
.lw-prog--auto .lw-prog__sparkle svg {
    width: 72%;
    height: 72%;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 16px;
}

.page-btn {
    padding: 10px 20px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    transition: all var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--card-hover);
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.page-info {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* --- Loading --- */
.loading-container {
    display: flex;
    justify-content: center;
    padding: 60px 0;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--card-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scoped tab-loading overlay for the dictionary content area. A plain centred
   spinner instead of the full-brand "orbital" LoadingOverlay, which was too heavy
   for an in-page tab switch (#118). Mirrors .lw-loader.is-scoped positioning. */
.dictionary-tab-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    z-index: 5;
}

/* --- Modal overlay --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    /* Opaque background */
    background: var(--bg);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInModal 0.25s ease-out;
}

@keyframes fadeInModal {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* --- Word Card Modal --- */
.modal-card {
    background: var(--bg);
    width: 100%;
    max-width: 500px;
    height: 100dvh;
    max-height: 100dvh;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1001;
    overflow-y: auto;
    padding: 24px 20px;
    /* Better internal spacing */
    /* Faster and more direct animation */
    animation: zoomIn 0.2s ease-out;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: translate(-50%, 10px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0) scale(1);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }

    to {
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(var(--on-surface-rgb), 0.08);
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.modal-close:hover {
    background: rgba(var(--on-surface-rgb), 0.15);
}

.card-header {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    /* Stack vertically then align start */
    align-items: flex-start;
    gap: 4px;
    position: relative;
    /* For close button */
}

.card-header-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.modal-close-inline {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(var(--on-surface-rgb), 0.05);
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.modal-close-inline:hover {
    background: rgba(var(--on-surface-rgb), 0.1);
    color: var(--text);
}

.card-header-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 4px;
}

.card-word {
    font-size: 26px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
}

.action-btn.audio-main {
    font-size: 24px;
    width: 44px;
    height: 44px;
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
}

.action-btn.audio-main:hover {
    background: rgba(var(--accent-rgb), 0.15);
}

.card-phonetics {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 6px;
    flex-wrap: wrap;
}

.transcription {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
}

.pos {
    font-size: 13px;
    padding: 3px 10px;
    border-radius: 6px;
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
    font-weight: 600;
}

.level-badge {
    color: var(--button-text);
    background: var(--accent);
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: bold;
    font-size: 0.9em;
}

.difficulty-text {
    display: flex;
    align-items: center;
    gap: 8px;
}

.freq {
    font-size: 12px;
    color: var(--hint);
}

.card-translation {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    font-size: 16px;
    margin-bottom: 16px;
}

.card-translation .label {
    margin-right: 6px;
}

.card-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    margin-bottom: 16px;
    gap: 12px;
}

.card-progress-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.card-progress-actions {
    display: flex;
    gap: 8px;
}

.progress-text {
    font-size: 14px;
    color: var(--text);
}

.difficulty-text {
    font-size: 12px;
    color: var(--warning);
}

.card-section {
    margin-bottom: 16px;
}

.card-section h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-secondary);
}

/* Modern section divider: small uppercase caption with a thin accent rule on the
   left. Replaces the older emoji-prefixed h3 (📝 / 🔗) — looks cleaner across
   all themes (cool / sepia / dark) and matches Home page section labels. */
.card-section-label {
    color: var(--text-secondary);
    margin: 0 0 var(--space-3) 2px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.card-section-label::before {
    content: "";
    display: inline-block;
    width: 14px;
    height: 2px;
    border-radius: 1px;
    background: var(--accent);
    opacity: 0.6;
}

.example-item {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    margin-bottom: 6px;
}

.example-original {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text);
}

.action-btn.audio-small {
    width: 28px;
    height: 28px;
    min-width: 28px;
    padding: 0;
    color: var(--accent);
    opacity: 0.75;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    /* Always dock to the right end of its flex parent (sentence row / collocation row),
       so position is identical between Sentences and Collocations sections. */
    margin-left: auto;
    transition: opacity var(--transition), background var(--transition);
}

.action-btn.audio-small:hover {
    opacity: 1;
    background: rgba(var(--accent-rgb), 0.10);
}

.example-original b,
.col-phrase b,
.col-phrase strong {
    color: var(--accent);
    font-weight: 700;
}

.example-translation {
    font-size: 15px;
    color: var(--text);
    /* Brighter for better contrast */
    opacity: 0.9;
    /* Slightly offset from main text */
    margin-top: 4px;
    font-style: italic;
}

.collocations-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.collocation-item {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    font-size: 16px;
}

.col-phrase {
    color: var(--text);
    font-weight: 500;
}

.col-translation {
    color: var(--text);
    /* Brighter for better contrast */
    opacity: 0.9;
    font-size: 15px;
}

/* --- Confirm Dialog --- */
.confirm-dialog {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 28px 24px;
    max-width: 320px;
    width: 90%;
    text-align: center;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow);
    animation: fadeIn 0.2s ease;
}

.confirm-message {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--text);
}

.confirm-actions {
    display: flex;
    gap: 10px;
}

.btn-cancel,
.btn-confirm {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font);
}

.btn-cancel {
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
}

.btn-cancel:hover {
    background: var(--card-hover);
}

.btn-confirm {
    background: var(--accent);
    color: #fff;
}

.btn-confirm-destructive {
    background: var(--destructive);
}

.btn-confirm:hover {
    opacity: 0.85;
}

/* --- Home page --- */
.home-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 24px;
    text-align: center;
}

.home-page h1 {
    font-size: 28px;
    margin-bottom: 12px;
}

.home-page p {
    color: var(--text-secondary);
    font-size: 15px;
}

.auth-info {
    margin-top: 24px;
    padding: 16px;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    font-size: 13px;
    color: var(--hint);
}

/* --- Mastery Buttons --- */
.action-btn.mastery-active {
    color: var(--success);
    background: rgba(var(--success-rgb), 0.10);
}

.action-btn.mastery-inactive {
    color: var(--hint);
}

.action-btn.mastery-inactive:hover {
    color: var(--accent);
}

/* --- Load More --- */
.load-more-container {
    padding: 24px 16px;
    display: flex;
    justify-content: center;
}

.btn-load-more {
    background: var(--card-bg);
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 12px 32px;
    border-radius: 20px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-load-more:hover:not(:disabled) {
    background: rgba(var(--accent-rgb), 0.08);
}

.btn-load-more:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.loading-more {
    display: flex;
    justify-content: center;
    padding: 12px;
}

.level-badge.small {
    padding: 1px 6px;
    font-size: 11px;
}


/* Settings Page */
/* Language Grid (still used by Onboarding's language step) */
.language-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
}

.language-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid transparent;
}

.language-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.language-card.active {
    background: var(--button-bg);
    color: var(--button-text);
    border-color: var(--button-bg);
}

.lang-flag {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.lang-name {
    font-size: 0.9rem;
    font-weight: 500;
}

.active-check {
    position: absolute;
    top: 6px;
    right: 8px;
    font-size: 0.8rem;
    background: rgba(var(--on-surface-rgb), 0.2);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* .mode-btn — base used by the Reader / Story mode toggles (they each add their
   own overrides inline). */
.mode-btn {
    padding: 12px;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.05);
    background: var(--bg-secondary);
    text-align: left;
    transition: all 0.2s;
    font-weight: 500;
}

.mode-btn.active {
    background: var(--button-bg);
    color: var(--button-text);
}

.btn-back {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    background: var(--bg-secondary);
    color: var(--text);
    font-weight: 600;
    transition: background 0.2s;
}

/* Animations — [animation="fadeIn"] is used by MyDictionary; keyframes fadeIn
   is also referenced by the settings pages. */
[animation="fadeIn"] {
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.icon-svg {
    width: 16px;
    height: 16px;
    display: block;
    flex-shrink: 0;
}

/* --- Theme switcher (segmented cards) --- */
.theme-switcher {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font);
    transition: all var(--transition);
}

.theme-option:hover {
    background: var(--card-hover);
}

.theme-option.active {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.10);
    color: var(--accent);
}

.theme-option-icon {
    font-size: 1.4rem;
    line-height: 1;
}

.theme-option-label {
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
}

@media (max-width: 360px) {
    .theme-option-label {
        font-size: 0.7rem;
    }

    .theme-option {
        padding: 10px 4px;
    }
}

/* ============================================================
   App shell — adaptive navigation frame (AppShell.razor)
   Mobile-first: top bar + fixed bottom tab bar.
   ≥768px: vertical side rail + top bar (tab bar hidden).
   ============================================================ */
.lw-icon {
    display: block;
    flex-shrink: 0;
}

.app-shell {
    min-height: 100dvh;
    background: var(--bg);
    color: var(--text);
}

/* ── Top bar ──────────────────────────────────────────────── */
.app-shell__topbar {
    position: sticky;
    top: 0;
    z-index: var(--shell-z-chrome);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 8px;
    min-height: calc(var(--shell-topbar-h) + var(--safe-top));
    padding: calc(var(--safe-top) + 6px) max(14px, var(--safe-right)) 6px max(14px, var(--safe-left));
    background: var(--bg);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

.app-shell__brand {
    justify-self: start;
    min-width: 0;
    display: flex;
    align-items: center;
}

.app-shell__brand-text {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 18px;
    letter-spacing: -0.01em;
    color: var(--text);
    white-space: nowrap;
}

/* Branded wordmark used as AppShell BrandContent (<BrandMark>): orbit glyph + "Lang" in the
   ink colour and "Orbit" in the terracotta accent. Mirrors the boot-loader's lw-orb-core
   .l1/.l2 colour split so the brand reads the same from boot splash to top bar. */
.lw-brand {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
}

.lw-brand__orb {
    flex: none;
    width: 22px;
    height: 22px;
}

.lw-brand__word {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 19px;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.lw-brand__lang { color: var(--text); }
.lw-brand__orbit { color: var(--accent); }

.app-shell__title {
    justify-self: center;
    min-width: 0;
    text-align: center;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-shell__actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Content ──────────────────────────────────────────────── */
.app-shell__content {
    min-width: 0;
    /* Clear the fixed mobile tab bar (overridden to 0 on desktop). */
    padding-bottom: calc(var(--shell-tabbar-h) + var(--safe-bottom));
}

.app-shell--immersive .app-shell__content {
    padding-bottom: 0;
}

/* ── Bottom tab bar (mobile) ──────────────────────────────── */
.app-shell__tabbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--shell-z-chrome);
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    align-items: center;
    height: calc(var(--shell-tabbar-h) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: var(--bg);
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--card-border);
}

.app-shell__tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 6px 4px;
    /* Let the label's ellipsis kick in inside the 1fr grid column instead of
       overflowing into the neighbouring tab. */
    min-width: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-family: var(--font);
    transition: color var(--transition), transform var(--transition);
}

.app-shell__tab-label {
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
    /* Keep every tab caption on a single line — long localized labels
       ("My dictionary", "Il mio dizionario") otherwise wrap to two rows and
       break the bar's rhythm (#80). Clip with an ellipsis if a translation is
       still too wide for its column. */
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-shell__tab.is-active {
    color: var(--accent);
}

.app-shell__tab:active {
    transform: scale(0.92);
}

/* ── "More" overflow sheet (mobile) ───────────────────────── */
/* Backdrop covers the page content but stops at the tab bar — the bar stays
   visible so the active "More" highlight + the dismiss-tap target are obvious. */
.app-shell__more-backdrop {
    position: fixed;
    inset: 0 0 calc(var(--shell-tabbar-h) + var(--safe-bottom)) 0;
    z-index: calc(var(--shell-z-chrome) - 1);
    background: rgba(0, 0, 0, 0.35);
    animation: app-shell-fade-in 0.16s ease-out;
}

.app-shell__more-sheet {
    position: fixed;
    left: 0;
    right: 0;
    bottom: calc(var(--shell-tabbar-h) + var(--safe-bottom));
    z-index: var(--shell-z-chrome);
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px max(8px, var(--safe-right)) 8px max(8px, var(--safe-left));
    background: var(--bg);
    border-top: 1px solid var(--card-border);
    box-shadow: 0 -8px 24px -8px rgba(0, 0, 0, 0.25);
    animation: app-shell-slide-up 0.18s ease-out;
}

.app-shell__more-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text);
    font-family: var(--font);
    font-size: 15px;
    font-weight: 500;
    text-align: left;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}

.app-shell__more-item:hover {
    background: var(--card-hover);
}

.app-shell__more-item:active {
    background: rgba(var(--accent-rgb), 0.12);
}

.app-shell__more-item.is-active {
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.10);
}

@keyframes app-shell-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes app-shell-slide-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

/* ── Side rail (desktop) ──────────────────────────────────── */
.app-shell__rail {
    display: none;
}

@media (min-width: 768px) {
    .app-shell {
        display: grid;
        grid-template-columns: var(--shell-rail-w) 1fr;
        grid-template-rows: auto 1fr;
        grid-template-areas:
            "rail topbar"
            "rail content";
    }

    .app-shell--immersive {
        grid-template-columns: 1fr;
        grid-template-areas: "content";
    }

    /* No top bar (Mini App): rail + content only, content spans the full height.
       Excluded when also immersive (the Reader): immersive must stay single-column
       "content". Without :not(), this rule's "rail content" areas — defined later with
       equal specificity — overrode immersive's "content", reinstating a 1fr rail column
       with no rail element and shoving the book text to the right (#464). */
    .app-shell--no-topbar:not(.app-shell--immersive) {
        grid-template-rows: 1fr;
        grid-template-areas: "rail content";
    }

    .app-shell__topbar {
        grid-area: topbar;
    }

    .app-shell__content {
        grid-area: content;
        padding-bottom: 0;
    }

    /* Non-immersive desktop: the shell is exactly the viewport and the CONTENT PANE is the
       scroll container — not the window. This pins the side rail in place. Previously the
       window scrolled while the rail was sticky over a grid area taller than the viewport,
       so on a long page (the Library shelves) the sticky released near the bottom and the
       rail — with the top nav items — scrolled out of view even though it had empty space.
       The immersive Reader is excluded: it keeps full-page scroll for its own chrome and
       sticky translate slider. */
    .app-shell:not(.app-shell--immersive) {
        height: 100dvh;
        overflow: hidden;
    }

    .app-shell:not(.app-shell--immersive) .app-shell__content {
        min-height: 0;
        overflow-y: auto;
    }

    .app-shell__tabbar,
    .app-shell__more-backdrop,
    .app-shell__more-sheet {
        /* Desktop uses the rail (no overflow needed — it scrolls). If the user resizes
           from mobile while the More sheet is open, hide it here so it doesn't linger. */
        display: none;
    }

    .app-shell__rail {
        grid-area: rail;
        position: sticky;
        top: 0;
        align-self: start;
        height: 100dvh;
        display: flex;
        flex-direction: column;
        gap: 4px;
        padding: calc(var(--safe-top) + 14px) 8px 14px;
        background: var(--bg-secondary);
        border-right: 1px solid var(--card-border);
        overflow-y: auto;
    }

    .app-shell__rail-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 10px 4px;
        min-width: 0;
        background: none;
        border: none;
        border-radius: var(--radius-sm);
        cursor: pointer;
        color: var(--text-secondary);
        font-family: var(--font);
        transition: background var(--transition), color var(--transition);
    }

    .app-shell__rail-item:hover {
        background: var(--card-hover);
        color: var(--text);
    }

    .app-shell__rail-label {
        font-size: 11px;
        font-weight: 600;
        line-height: 1;
        text-align: center;
        max-width: 100%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .app-shell__rail-item.is-active {
        color: var(--accent);
        background: rgba(var(--accent-rgb), 0.10);
    }
}

/* ============================================================
   Shared settings primitives (SettingsSection / LanguagePicker)
   Prefixed lw- so they don't collide with a host's bespoke
   .settings-* styles; hosts can migrate onto these over time.
   ============================================================ */
.lw-settings-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
}

.lw-settings-section__title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
}

.lw-settings-section__icon {
    color: var(--accent);
}

/* ── Language picker ──────────────────────────────────────── */
.lw-lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 6px;
}

/* Flat horizontal card: badge ▸ name ▸ ✓. About half the height of the old
   two-row vertical layout, and a single line read for the eye. */
.lw-lang-card {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding: 6px 10px 6px 6px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font);
    transition: all var(--transition);
}

.lw-lang-card:hover {
    background: var(--card-hover);
    color: var(--text);
}

.lw-lang-card.is-active {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.10);
    color: var(--accent);
}

/* 2-letter "flag badge" — replaces the unreliable cross-platform flag emoji.
   Windows ships Segoe UI Emoji without flag glyphs, so "🇬🇧" rendered as "GB"
   letter pair anyway — make it intentional and pretty. */
.lw-lang-flag {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 24px;
    padding: 0 6px;
    border-radius: 999px;
    background: linear-gradient(135deg,
        rgba(var(--accent-rgb), 0.22),
        rgba(var(--accent-rgb), 0.08));
    color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb), 0.28);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.6px;
    line-height: 1;
}

.lw-lang-card.is-active .lw-lang-flag {
    background: rgba(var(--accent-rgb), 0.18);
    color: var(--accent);
}

.lw-lang-name {
    flex: 1 1 auto;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lw-lang-check {
    flex: 0 0 auto;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
}

/* ── Segmented control (level / mode / gender) ────────────── */
.lw-segmented {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.lw-segmented--vertical {
    flex-direction: column;
}

.lw-segmented__item {
    flex: 1 1 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-width: 0;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.lw-segmented__item:hover {
    background: var(--card-hover);
    color: var(--text);
}

.lw-segmented__item.is-active {
    border-color: transparent;
    background: var(--accent);
    color: var(--button-text);
    box-shadow: 0 6px 16px -8px rgba(var(--accent-rgb), 0.8);
}

.lw-segmented--vertical .lw-segmented__item {
    justify-content: flex-start;
}

.lw-segmented__icon {
    font-size: 1.1rem;
    line-height: 1;
}

/* ── Toggle switch ────────────────────────────────────────── */
.lw-toggle {
    position: relative;
    flex-shrink: 0;
    width: 46px;
    height: 28px;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: rgba(var(--on-surface-rgb), 0.18);
    cursor: pointer;
    transition: background var(--transition);
}

.lw-toggle.is-on {
    background: var(--accent);
}

.lw-toggle:disabled {
    opacity: 0.5;
    cursor: default;
}

.lw-toggle__knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition);
}

.lw-toggle.is-on .lw-toggle__knob {
    transform: translateX(18px);
}

/* ── Labelled field row (label left, control right) ───────── */
.lw-field-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 32px;
}

.lw-field-row + .lw-field-row {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--card-border);
}

.lw-field-row__label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

/* ── Number stepper ───────────────────────────────────────── */
.lw-stepper {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--card-bg);
}

.lw-stepper__btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.lw-stepper__btn:hover:not(:disabled) {
    background: var(--card-hover);
}

.lw-stepper__btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.lw-stepper__value {
    min-width: 46px;
    text-align: center;
    font-size: 15px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--text);
}

/* Two compact sections side by side on wider screens. */
.lw-settings-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

@media (min-width: 480px) {
    .lw-settings-row {
        grid-template-columns: 1fr 1fr;
    }
    .lw-settings-row .lw-settings-section {
        margin-bottom: 0;
    }
}

/* ============================================================
   SRS "due" hint surfaced on each word/phrase row.
   Two stacked lines (caption "ПОВТОР" + value "сегодня / 3 дня") so the
   eye lands on the value while the caption supplies context. The value
   flips to --accent when due ≤ today — gives the user a one-glance read
   of "what needs my attention" inside long lists.
   ============================================================ */
.srs-due-label {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    min-width: 64px;
    margin-right: 4px;
    line-height: 1.1;
    color: var(--text-secondary);
}

.srs-due-caption {
    color: var(--hint);
    opacity: 0.85;
}

.srs-due-value {
    color: var(--text-secondary);
    margin-top: 1px;
    font-weight: 500;
}

.srs-due-value.is-due {
    color: var(--accent);
    font-weight: 600;
}

/* ============================================================
   Hide row-level mastery / delete buttons until the row is selected.
   The audio button stays visible because it's the one action users
   take without picking a word first. Mastery & delete unhide when
   the row gains .selected; this de-clutters long lists.
   ============================================================ */
.word-item .action-btn.mastery-inactive,
.word-item .action-btn.mastery-active,
.word-item .action-btn.delete,
.phrase-item .action-btn.mastery-inactive,
.phrase-item .action-btn.mastery-active,
.phrase-item .action-btn.delete {
    display: none;
}

.word-item.selected .action-btn.mastery-inactive,
.word-item.selected .action-btn.mastery-active,
.word-item.selected .action-btn.delete,
.phrase-item.selected .action-btn.mastery-inactive,
.phrase-item.selected .action-btn.mastery-active,
.phrase-item.selected .action-btn.delete {
    display: flex;
}

/* ============================================================
   Bucket strip — three-up summary of NEW / IN PROGRESS / MASTERED.
   Doubles as a one-tap stage filter (sets _filterStage in MyDictionary).
   Active bucket = filled tint, non-active = neutral surface; the count
   number is colored per-bucket to match the existing dashboard palette.
   ============================================================ */
.bucket-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 10px 4px;
}

.bucket-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 10px 8px;
    border-radius: var(--radius);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition), transform var(--transition-fast);
    user-select: none;
}

.bucket-cell:hover {
    border-color: rgba(var(--on-surface-rgb), 0.18);
}

.bucket-cell:active {
    transform: scale(0.98);
}

.bucket-cell.active {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
}

.bucket-label {
    color: var(--text-secondary);
    font-size: var(--type-caption-size);
    line-height: var(--type-caption-line);
    font-weight: var(--type-caption-weight);
    letter-spacing: var(--type-caption-track);
    text-transform: uppercase;
}

.bucket-count {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.1;
}

.bucket-cell[data-bucket="learning"] .bucket-count { color: var(--accent); }
.bucket-cell[data-bucket="srs"]      .bucket-count { color: var(--warning); }
.bucket-cell[data-bucket="mastered"] .bucket-count { color: var(--mastered-stable); }

/* --- LwSelect: themed dropdown with custom popup (replacement for native <select>) --- */
.lw-select {
    position: relative;
    width: 100%;
}

.lw-select-trigger {
    /* Visually matches .btn-filter (same row in MyDictionary controls-top) —
       same bg/border/padding/font-size keeps the sort dropdown and the filter
       button reading as one chip-row instead of two unrelated controls. */
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    width: 100%;
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: all var(--transition);
}

.lw-select-trigger:hover {
    color: var(--text);
}

.lw-select-trigger:focus-visible {
    border-color: var(--accent);
    color: var(--text);
}

.lw-select.open .lw-select-trigger {
    color: var(--text);
    border-color: var(--accent);
}

.lw-select-value {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: left;
    flex: 1;
}

.lw-select-chevron {
    display: inline-flex;
    opacity: 0.6;
    transition: transform var(--transition);
}

.lw-select.open .lw-select-chevron {
    transform: rotate(180deg);
}

.lw-select-overlay {
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 100;
}

.lw-select-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 101;
    list-style: none;
    margin: 0;
    padding: 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    max-height: 320px;
    overflow-y: auto;
    animation: lw-select-pop 0.12s ease;
}

@keyframes lw-select-pop {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.lw-select-option {
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text);
    font-size: 14px;
    line-height: 1.3;
    user-select: none;
}

.lw-select-option:hover {
    background: var(--card-hover);
}

.lw-select-option.selected {
    background: var(--accent);
    color: #fff;
}

/* ============================================================
   Feedback Button + Modal
   Small flag icon in the corner of content cards, opens a modal
   with category chips and a free-text body. Used by both the
   in-context report (ContentReport) and the global feedback
   form (GeneralFeedback) — same component, different defaults.
   ============================================================ */

.feedback-button-host {
    /* Inline so the host can position the button via flex/absolute as needed. */
    display: inline-block;
    position: relative;
}

.feedback-button {
    width: 28px;
    height: 28px;
    padding: 0;
    /* Visible ring + fill so the flag reads as a tappable button, not a faint glyph (#502). */
    border: 1px solid rgba(var(--on-surface-rgb), 0.22);
    background: rgba(var(--on-surface-rgb), 0.06);
    color: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 13px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    /* Was 0.55 — looked disabled. Keep it quiet but legibly present. */
    opacity: 0.9;
    transition: all var(--transition);
}

.feedback-button:hover {
    background: rgba(var(--accent-rgb), 0.12);
    border-color: rgba(var(--accent-rgb), 0.5);
    color: var(--accent);
    opacity: 1;
}

.feedback-button:active {
    transform: scale(0.94);
}

/* Inline placement: the flag trails the translation / grammar explanation text
   (#502) instead of floating in the card header or a separate footer row. Nudge it
   off the last word and centre it on the text line. */
.popup-report-flag {
    margin-left: 6px;
    vertical-align: middle;
}

/* The feedback modal is centered by its flex parent (.modal-overlay), NOT by
   left:50% like .modal-card — so it must NOT reuse the shared `zoomIn` keyframe,
   whose `translateX(-50%)` is the horizontal-centering hack for absolutely-placed
   cards. Borrowing it shifted the modal half its width to the left for the whole
   animation, then snapped it back to center when the (fill-mode:none) animation
   ended. This vertical-only keyframe keeps it centered the entire time. */
@keyframes feedbackZoomIn {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.98);
    }

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

/* Modal card itself — slightly tighter than the word-card modal because the
   content is a short form, not a full card. Reuses .modal-overlay from above. */
.feedback-modal {
    background: var(--bg);
    width: 100%;
    max-width: 480px;
    max-height: 90dvh;
    overflow-y: auto;
    border-radius: var(--radius);
    padding: 24px 20px 20px;
    position: relative;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    animation: feedbackZoomIn 0.18s ease-out;
}

.feedback-modal__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 4px;
    padding-right: 32px;
}

.feedback-modal__subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 0 20px;
    line-height: 1.4;
}

.feedback-modal__section {
    margin-bottom: 16px;
}

.feedback-modal__label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.feedback-modal__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.feedback-modal__chip {
    padding: 8px 14px;
    border: 1px solid var(--card-border);
    border-radius: 999px;
    background: var(--card-bg);
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
}

.feedback-modal__chip:hover {
    background: var(--card-hover);
}

.feedback-modal__chip--selected {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.feedback-modal__textarea {
    width: 100%;
    min-height: 96px;
    padding: 12px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    transition: border-color var(--transition);
}

.feedback-modal__textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.feedback-modal__error {
    color: #d04545;
    font-size: 13px;
    margin-bottom: 12px;
}

.feedback-modal__success {
    padding: 24px 16px;
    text-align: center;
    color: var(--text);
    font-size: 15px;
}

.feedback-modal__actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 8px;
}

/* Legal footer — three small links to the static legal pages, rendered below the
   AppShell. Compact + low-contrast so it doesn't compete with the navigation. */
.legal-footer {
    padding: 18px 16px 28px;
    text-align: center;
    font-size: 13px;
    color: rgba(var(--on-surface-rgb), 0.5);
}
.legal-footer--hidden { display: none; }
.legal-footer__links { display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: center; }
.legal-footer__links a { color: inherit; text-decoration: none; }
.legal-footer__links a:hover { color: rgba(var(--on-surface-rgb), 0.85); text-decoration: underline; }
.legal-footer__dot { color: rgba(var(--on-surface-rgb), 0.3); }

/* ============================================================
   Editorial atoms (Ink & Paper) — reusable, theme-driven building
   blocks for the redesigned screens. Namespaced `ed-` so they never
   collide with a host's bespoke .chip/.stat/.section-label. Compose
   with the .lw-type-* utilities + tokens; no hardcoded colors.
   ============================================================ */

/* mono uppercase eyebrow / kicker */
.ed-eyebrow {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--hint);
}
.ed-eyebrow--accent { color: var(--accent); }

/* section label — mono kicker with a trailing hairline */
.ed-section-label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 30px 0 14px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--hint);
}
.ed-section-label::after {
    content: "";
    flex: 1;
    height: 1px;
    background: rgba(var(--on-surface-rgb), 0.08);
}

/* hairline rules */
.ed-rule { height: 1px; background: var(--card-border); border: 0; margin: 0; }
.ed-rule-soft { height: 1px; background: rgba(var(--on-surface-rgb), 0.07); border: 0; margin: 0; }

/* serif heading convenience */
.ed-h-serif { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.015em; color: var(--text); }

/* editorial stat row — numbers + ruled cells, no shadowed cards */
.ed-statrow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin: 22px 0 4px;
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}
.ed-stat { padding: 14px 4px; text-align: left; position: relative; }
.ed-stat + .ed-stat::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: rgba(var(--on-surface-rgb), 0.07);
}
.ed-stat__label {
    font-family: var(--font-mono);
    font-size: 9.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--hint);
    margin-bottom: 6px;
}
.ed-stat__val {
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: -0.02em;
    color: var(--text);
}
.ed-stat__val sup { font-size: 14px; font-weight: 500; color: var(--text-secondary); vertical-align: super; margin-left: 2px; }
.ed-stat__sub { font-size: 11.5px; color: var(--text-secondary); margin-top: 4px; }
.ed-stat--accent .ed-stat__val { color: var(--accent); }

/* filter chips — text + underline, not pills */
.ed-chips { display: flex; gap: 16px; padding: 2px 0 4px; overflow-x: auto; scrollbar-width: none; }
.ed-chips::-webkit-scrollbar { display: none; }
.ed-chip {
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 0 5px;
    border: 0;
    border-bottom: 2px solid transparent;
    background: none;
    white-space: nowrap;
    font-family: var(--font);
}
.ed-chip.is-active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }

/* editorial buttons — flat, hairline ghost / solid terracotta */
.ed-btn {
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 18px;
    height: 44px;
    font-family: var(--font);
    transition: background var(--transition), border-color var(--transition), opacity var(--transition);
}
.ed-btn--solid { background: var(--accent); color: var(--button-text); }
.ed-btn--solid:hover { opacity: 0.92; }
.ed-btn--ghost { background: transparent; color: var(--text); border-color: var(--card-border); }
.ed-btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ruled-row list — replaces stacks of soft cards */
.ed-ruled { display: flex; flex-direction: column; }
.ed-ruled__row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 15px 2px;
    cursor: pointer;
    border-bottom: 1px solid rgba(var(--on-surface-rgb), 0.07);
}
.ed-ruled__row:first-child { border-top: 1px solid rgba(var(--on-surface-rgb), 0.07); }

/* accent-tinted callout (memory-orbit / auto-learned notes) */
.ed-note {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    background: rgba(var(--accent-rgb), 0.06);
}