.library-reader {
    --reader-bg: var(--color-base-100);
    --reader-panel: var(--color-base-100);
    --reader-panel-strong: var(--color-base-200);
    --reader-line: var(--color-base-300);
    --reader-muted: color-mix(in oklab, var(--color-base-content) 70%, transparent);
    --reader-subtle: color-mix(in oklab, var(--color-base-content) 58%, transparent);
    --reader-primary: var(--color-primary);
    --reader-primary-content: var(--color-primary-content);
    --reader-accent: var(--color-accent);
    --reader-accent-content: var(--color-accent-content);
    --color-neutral: var(--color-base-200);
    --color-neutral-content: var(--color-base-content);
    background: var(--color-base-100);
    color: var(--color-base-content);
    color-scheme: light;
    height: 100vh;
    height: 100dvh;
    min-height: 100vh;
    min-height: 100dvh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

.library-reader *,
.library-reader *::before,
.library-reader *::after {
    box-sizing: border-box;
}

.library-reader [hidden] {
    display: none !important;
}

.library-reader__sr-only {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.library-reader :where(button, a, input, select):focus-visible {
    outline: 2px solid var(--reader-accent);
    outline-offset: 2px;
}

.library-reader :where(button, a) {
    transition-duration: 140ms;
    transition-property: background-color, border-color, color, opacity, transform;
    transition-timing-function: cubic-bezier(.2, 0, 0, 1);
}

@media (hover: hover) and (pointer: fine) {
    .library-reader :where(button, a):active {
        transform: scale(.96);
    }
}

.library-reader__header {
    align-items: center;
    background: var(--reader-bg);
    border-bottom: 1px solid var(--reader-line);
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(10rem, auto) minmax(0, 1fr) minmax(10rem, auto);
    min-height: 4.5rem;
    padding: .625rem clamp(.875rem, 2vw, 1.75rem);
    position: relative;
    z-index: 20;
}

.library-reader__back,
.library-reader__header-actions .dsy-btn {
    border-color: transparent;
    color: var(--reader-muted);
    min-height: 2.75rem;
}

.library-reader__back {
    justify-self: start;
}

.library-reader__back:hover,
.library-reader__back:focus-visible,
.library-reader__header-actions .dsy-btn-ghost:hover {
    background: var(--reader-panel);
    color: var(--color-neutral-content);
}

.library-reader__title {
    min-width: 0;
    text-align: center;
}

.library-reader__title span {
    color: var(--reader-subtle);
    display: block;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .05em;
    line-height: 1.3;
    text-transform: uppercase;
}

.library-reader__title h1 {
    color: var(--color-neutral-content);
    font-family: var(--font-display);
    font-size: clamp(.875rem, 1.15vw, 1rem);
    font-weight: 700;
    letter-spacing: -.015em;
    line-height: 1.35;
    margin: .2rem auto 0;
    max-width: 46rem;
    overflow: hidden;
    text-overflow: ellipsis;
    text-wrap: balance;
    white-space: nowrap;
}

.library-reader__header-actions {
    align-items: center;
    display: flex;
    gap: .5rem;
    justify-content: flex-end;
}

.library-reader__header-actions .dsy-btn-accent {
    color: var(--reader-accent-content);
}

.library-reader__header-actions [data-reader-context-toggle].dsy-btn-active {
    background: color-mix(in oklab, var(--reader-primary) 22%, var(--reader-panel)) !important;
    color: var(--color-neutral-content) !important;
}

.library-reader__notice {
    margin: .875rem auto;
    max-width: 43.75rem;
}

.library-reader__workspace {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(25rem, 28rem);
    grid-template-rows: auto minmax(0, 1fr);
    height: calc(100dvh - 4.5rem);
    min-height: calc(100vh - 4.5rem);
    min-height: calc(100dvh - 4.5rem);
    overflow: hidden;
}

.library-reader__workspace.is-context-collapsed {
    grid-template-columns: minmax(0, 1fr);
}

.library-reader__toolbar {
    align-items: center;
    background: color-mix(in oklab, var(--reader-panel) 90%, transparent);
    border-bottom: 1px solid var(--reader-line);
    display: flex;
    gap: .75rem;
    grid-column: 1 / -1;
    min-height: 4rem;
    overflow-x: auto;
    padding: .5rem clamp(.75rem, 2vw, 1.25rem);
    scrollbar-width: thin;
    position: relative;
    z-index: 15;
}

.library-reader__toolbar .dsy-btn {
    border-color: transparent;
    color: var(--reader-muted);
    flex: 0 0 auto;
    font-size: .8125rem;
    font-weight: 700;
    min-height: 2.75rem;
}

.library-reader__toolbar .dsy-btn-square {
    min-width: 2.75rem;
    width: 2.75rem;
}

.library-reader__toolbar .dsy-btn:hover,
.library-reader__toolbar .dsy-btn:focus-visible,
.library-reader__toolbar .dsy-btn[aria-pressed="true"] {
    background: var(--reader-panel-strong);
    color: var(--color-neutral-content);
}

.library-reader__toolbar .dsy-btn[aria-pressed="true"] {
    box-shadow: inset 0 -2px 0 var(--reader-accent);
}

.library-reader__toolbar .dsy-btn:disabled {
    background: transparent;
    cursor: not-allowed;
    opacity: .35;
}

.library-reader__tool-group,
.library-reader__view-options {
    align-items: stretch;
    display: inline-flex;
    flex: 0 0 auto;
}

.library-reader__toolbar-divider {
    align-self: center;
    background: var(--reader-line);
    flex: 0 0 1px;
    height: 1.75rem;
}

.library-reader__page-control {
    align-items: center;
    background: color-mix(in oklab, var(--reader-panel-strong) 78%, transparent);
    border-inline: 1px solid var(--reader-line);
    color: var(--reader-muted);
    display: flex;
    font-size: .8125rem;
    gap: .375rem;
    min-height: 2.75rem;
    padding: .25rem .625rem;
    white-space: nowrap;
}

.library-reader__page-control label {
    font-weight: 700;
}

.library-reader__page-control .dsy-input {
    background: var(--reader-bg);
    border-color: var(--reader-line);
    color: var(--color-neutral-content);
    font-size: .875rem;
    font-variant-numeric: tabular-nums;
    height: 2.75rem;
    min-height: 2.75rem;
    padding-inline: .25rem;
    text-align: center;
    width: 2.75rem;
}

.library-reader__page-control span,
.library-reader__zoom {
    font-variant-numeric: tabular-nums;
}

.library-reader__zoom {
    align-items: center;
    background: color-mix(in oklab, var(--reader-panel-strong) 78%, transparent);
    color: var(--reader-muted);
    display: inline-flex;
    font-size: .8125rem;
    font-weight: 700;
    justify-content: center;
    min-height: 2.75rem;
    min-width: 4rem;
    padding-inline: .5rem;
}

.library-reader__desk {
    align-items: flex-start;
    background: var(--color-base-100);
    display: flex;
    grid-column: 1;
    justify-content: center;
    /* « safe » empêche la page zoomée d'être rognée à gauche, hors de portée
       du défilement. Les navigateurs sans ce mot-clé gardent la ligne au-dessus. */
    justify-content: safe center;
    min-height: 32rem;
    min-width: 0;
    overflow: auto;
    overscroll-behavior: contain;
    padding: clamp(1rem, 3vw, 2.25rem) clamp(.75rem, 2.4vw, 1.75rem) 4.5rem;
    scrollbar-gutter: stable;
    touch-action: pan-x pan-y;
}

.library-reader__status {
    align-items: center;
    align-self: center;
    color: var(--color-neutral-content);
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: auto;
    min-height: 18.75rem;
    text-align: center;
}

.library-reader__status strong {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
    margin-top: 1rem;
    text-wrap: balance;
}

.library-reader__status small {
    color: var(--reader-muted);
    font-size: .875rem;
    line-height: 1.5;
    margin-top: .375rem;
    max-width: 30rem;
    text-wrap: pretty;
}

.library-reader__spinner {
    color: var(--reader-accent);
}

.library-reader__sheet {
    background: var(--color-base-100);
    border: 1px solid var(--color-base-300);
    box-shadow:
        0 1px 2px color-mix(in oklab, black 8%, transparent),
        0 1rem 2.5rem color-mix(in oklab, black 10%, transparent);
    flex: 0 0 auto;
    line-height: 0;
    margin: 0 auto;
    max-width: 57.5rem;
    outline: 0;
    overflow: hidden;
    position: relative;
    transform-origin: top center;
    width: 100%;
}

.library-reader__sheet img {
    display: block;
    height: auto;
    pointer-events: none;
    user-select: none;
    width: 100%;
}

.library-reader-selection {
    inset: 0;
    line-height: 1.4;
    pointer-events: none;
    position: absolute;
    touch-action: none;
    z-index: 5;
}

.library-reader-selection.is-active {
    cursor: crosshair;
    pointer-events: auto;
}

.library-reader-selection__instruction {
    align-items: center;
    background: var(--color-neutral);
    border: 1px solid color-mix(in oklab, var(--color-neutral-content) 20%, transparent);
    border-radius: var(--radius-selector);
    box-shadow: 0 .5rem 1.5rem color-mix(in oklab, black 24%, transparent);
    color: var(--color-neutral-content);
    display: flex;
    font-size: .75rem;
    font-weight: 700;
    gap: .5rem;
    left: 50%;
    margin: 0;
    max-width: calc(100% - 2rem);
    min-height: 2.75rem;
    padding: .5rem .75rem;
    position: absolute;
    text-align: center;
    top: .75rem;
    transform: translateX(-50%);
    white-space: nowrap;
    z-index: 8;
}

.library-reader-selection__instruction i {
    color: var(--reader-accent);
}

.library-reader-selection__rectangle {
    border: 2px solid var(--reader-accent);
    border-radius: calc(var(--radius-field) / 2);
    box-shadow:
        0 0 0 9999px color-mix(in oklab, black 42%, transparent),
        0 0 0 1px color-mix(in oklab, white 48%, transparent),
        0 .5rem 1.5rem color-mix(in oklab, black 22%, transparent);
    pointer-events: none;
    position: absolute;
    z-index: 6;
}

.library-reader-selection__actions {
    box-shadow: 0 .75rem 2rem color-mix(in oklab, black 28%, transparent);
    cursor: default;
    position: absolute;
    z-index: 9;
}

.library-reader-selection__actions .dsy-btn {
    min-height: 2.75rem;
}

.library-reader-ocr-progress {
    align-items: center;
    background: var(--color-base-100);
    border: 1px solid color-mix(in oklab, var(--reader-primary) 48%, var(--color-base-300));
    box-shadow:
        0 0 0 3px color-mix(in oklab, var(--reader-primary) 12%, transparent),
        0 1px 2px color-mix(in oklab, black 8%, transparent),
        0 .75rem 2rem color-mix(in oklab, black 14%, transparent);
    color: var(--color-base-content);
    display: flex;
    gap: .75rem;
    left: 50%;
    max-width: calc(100vw - 2rem);
    min-height: 3.5rem;
    pointer-events: none;
    position: fixed;
    top: 9.5rem;
    transform: translateX(-50%);
    width: min(28rem, calc(100vw - 2rem));
    z-index: 50;
}

.library-reader-ocr-progress > span:last-child {
    display: grid;
    gap: .125rem;
    min-width: 0;
}

.library-reader-ocr-progress strong {
    color: var(--color-base-content);
    font-size: .875rem;
    font-weight: 800;
    line-height: 1.35;
}

.library-reader-ocr-progress small {
    color: var(--reader-muted);
    font-size: .75rem;
    line-height: 1.4;
    text-wrap: pretty;
}

.library-reader-ocr-progress .dsy-loading {
    color: var(--reader-primary);
    flex: 0 0 auto;
}

.library-reader-ocr-blocks {
    inset: 0;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    transition-duration: 180ms;
    transition-property: opacity;
    transition-timing-function: cubic-bezier(.2, 0, 0, 1);
    z-index: 4;
}

.library-reader-ocr-blocks.is-visible {
    opacity: 1;
}

.library-reader-ocr-blocks.is-fading {
    opacity: 0;
}

.library-reader-ocr-blocks__item {
    border: 1px dashed color-mix(in oklab, var(--reader-accent) 58%, transparent);
    border-radius: calc(var(--radius-field) / 2);
    box-shadow: 0 0 0 1px color-mix(in oklab, black 28%, transparent);
    position: absolute;
}

.library-reader-ocr-blocks__item small {
    background: var(--reader-accent);
    border-radius: 0 0 var(--radius-selector) 0;
    color: var(--reader-accent-content);
    display: block;
    font-size: .625rem;
    font-weight: 800;
    left: 0;
    line-height: 1;
    max-width: 100%;
    overflow: hidden;
    padding: .3rem .4rem;
    position: absolute;
    text-overflow: ellipsis;
    text-transform: uppercase;
    top: 0;
    white-space: nowrap;
}

.library-reader-ocr-blocks__item--table,
.library-reader-ocr-blocks__item--figure,
.library-reader-ocr-blocks__item--exercise {
    border-color: color-mix(in oklab, var(--reader-accent) 86%, white);
    border-width: 2px;
}

.library-reader-ocr-blocks__item--table,
.library-reader-ocr-blocks__item--figure {
    border-style: solid;
}

.library-reader__context {
    background: var(--color-base-100);
    border-left: 1px solid var(--color-base-300);
    grid-column: 2;
    min-width: 0;
    overflow: hidden;
    overscroll-behavior: contain;
    padding: 0;
}

.library-reader__workspace.is-context-collapsed .library-reader__context {
    display: none;
}

.library-reader__context .library-eyebrow {
    color: var(--reader-accent);
    font-size: .6875rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.library-reader__context h2 {
    color: var(--color-neutral-content);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -.02em;
    line-height: 1.25;
    margin: .75rem 0 .5rem;
    text-wrap: balance;
}

.library-reader__access > p {
    color: var(--reader-muted);
    font-size: .875rem;
    line-height: 1.6;
    margin: 0;
    text-wrap: pretty;
}

.library-reader__access > a {
    color: var(--reader-accent-content);
    display: flex;
    font-size: .8125rem;
    margin-top: 1rem;
    min-height: 2.75rem;
    width: 100%;
}

.library-reader__access ul {
    border-top: 1px solid var(--reader-line);
    list-style: none;
    margin: 1.25rem 0 0;
    padding: 1rem 0 0;
}

.library-reader__access li {
    align-items: flex-start;
    color: var(--reader-subtle);
    display: flex;
    font-size: .75rem;
    gap: .5rem;
    line-height: 1.5;
    margin: .5rem 0;
}

.library-reader__access li i {
    color: var(--reader-muted);
    font-size: .875rem;
    margin-top: .1rem;
}

.library-reader-ai {
    --reader-bg: var(--color-base-100);
    --reader-line: var(--color-base-300);
    --reader-muted: color-mix(in oklab, var(--color-base-content) 70%, transparent);
    --reader-panel: var(--color-base-100);
    --reader-panel-strong: var(--color-base-200);
    --reader-subtle: color-mix(in oklab, var(--color-base-content) 58%, transparent);
    --color-neutral: var(--color-base-200);
    --color-neutral-content: var(--color-base-content);
    background: var(--color-base-100);
    color: var(--color-base-content);
    color-scheme: light;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    overflow: hidden;
}

.library-reader-ai__heading {
    align-items: center;
    border-bottom: 1px solid var(--reader-line);
    display: flex;
    gap: .875rem;
    justify-content: space-between;
    min-height: 5rem;
    padding: .875rem 1rem;
}

.library-reader-ai__identity {
    align-items: center;
    display: flex;
    gap: .75rem;
    min-width: 0;
}

.library-reader-ai__identity > div {
    min-width: 0;
}

.library-reader-ai__identity > div > span,
.library-reader-ai--locked > span {
    color: var(--reader-muted);
    display: block;
    font-size: .75rem;
    font-weight: 700;
}

.library-reader-ai__heading h2,
.library-reader-ai--locked h2 {
    font-size: 1rem;
    margin: .125rem 0 0;
}

.library-reader-ai__heading-meta {
    align-items: center;
    display: flex;
    flex: 0 0 auto;
    gap: .375rem;
}

.library-reader-ai__page {
    background: color-mix(in oklab, var(--reader-primary) 14%, var(--reader-panel));
    border-color: color-mix(in oklab, var(--reader-primary) 34%, var(--reader-line));
    color: var(--color-neutral-content);
    gap: .3rem;
    min-height: 2rem;
}

.library-reader-ai__balance {
    align-items: baseline;
    background: transparent;
    display: flex;
    gap: .3rem;
    min-height: 2rem;
    padding: .35rem .25rem;
    white-space: nowrap;
}

.library-reader-ai__balance output {
    color: var(--reader-accent);
    font-size: .875rem;
    font-variant-numeric: tabular-nums;
    font-weight: 800;
}

.library-reader-ai__balance small {
    color: var(--reader-muted);
    font-size: .6875rem;
    font-weight: 700;
}

.library-reader-ai__close {
    color: var(--reader-muted);
    display: none;
    min-height: 2.75rem;
    min-width: 2.75rem;
}

.library-reader-ai__tabs {
    background: transparent;
    border-bottom: 1px solid var(--reader-line);
    border-top: 1px solid var(--reader-line);
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow-x: visible;
}

.library-reader-ai__tabs .dsy-tab {
    background-color: transparent;
    border-color: var(--reader-line);
    color: var(--reader-muted);
    font-size: .75rem;
    font-weight: 700;
    min-height: 2.75rem;
    padding-inline: .25rem;
}

.library-reader-ai__tabs .dsy-tab[aria-selected="true"],
.library-reader-ai__tabs .dsy-tab-active {
    background-color: color-mix(in oklab, var(--reader-accent) 12%, var(--reader-panel-strong));
    color: var(--color-neutral-content);
}

.library-reader-ai__tabs .dsy-tab:hover {
    background-color: color-mix(in oklab, var(--color-neutral-content) 7%, var(--reader-panel-strong));
    color: var(--color-neutral-content);
}

.library-reader-ai__tabs .dsy-tab[aria-selected="true"]::after,
.library-reader-ai__tabs .dsy-tab-active::after {
    background: var(--reader-accent);
}

.library-reader-ai__panel {
    padding: 1rem;
}

.library-reader-tutor {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
}

.library-reader-tutor__settings,
.library-reader-tutor__composer {
    padding: .75rem;
}

.library-reader-tutor__settings {
    display: grid;
    gap: .875rem;
}

.library-reader-tutor__settings > label,
.library-reader-tutor__field-label,
.library-reader-tutor__label-row label {
    color: var(--color-neutral-content);
    display: block;
    font-size: .75rem;
    font-weight: 700;
    line-height: 1.4;
}

.library-reader-tutor__settings > label {
    margin-bottom: -.5rem;
}

.library-reader-tutor__field-label {
    margin-bottom: .375rem;
}

.library-reader-tutor__scope {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: .375rem;
    width: 100%;
}

.library-reader-tutor__scope .dsy-btn,
.library-reader-tutor__actions .dsy-btn {
    background: color-mix(in oklab, var(--reader-bg) 72%, transparent);
    border-color: var(--reader-line);
    color: var(--color-neutral-content);
    font-size: .75rem;
    min-height: 2.75rem;
}

.library-reader-tutor__scope .dsy-btn[aria-pressed="true"],
.library-reader-tutor__actions .dsy-btn[aria-pressed="true"] {
    background: color-mix(in oklab, var(--reader-accent) 14%, var(--reader-panel));
    border-color: color-mix(in oklab, var(--reader-accent) 42%, var(--reader-line));
    color: var(--color-neutral-content);
}

.library-reader-tutor__scope .dsy-btn:hover,
.library-reader-tutor__actions .dsy-btn:hover {
    background: color-mix(in oklab, var(--reader-accent) 9%, var(--reader-panel));
}

.library-reader-tutor__thread {
    background: var(--reader-bg);
    flex: 1 1 auto;
    max-height: none;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 1.25rem .875rem;
    scroll-behavior: smooth;
    scrollbar-gutter: stable;
    touch-action: pan-y;
    -webkit-overflow-scrolling: touch;
}

.library-reader-tutor__thread .dsy-chat {
    padding-block: .25rem;
}

.library-reader-tutor__thread .dsy-chat-header {
    color: var(--reader-subtle);
    font-size: .75rem;
    font-weight: 700;
    margin-bottom: .25rem;
}

.library-reader-tutor__thread .dsy-chat-bubble {
    background: var(--reader-panel-strong);
    color: var(--color-neutral-content);
    font-size: .875rem;
    line-height: 1.55;
    max-width: min(92%, 34rem);
    padding: .75rem .875rem;
    text-wrap: pretty;
}

.library-reader-tutor__thread .dsy-btn {
    min-height: 2.75rem;
}

.library-reader-tutor__thread .dsy-chat-end .dsy-chat-bubble {
    background: var(--reader-primary);
    color: var(--reader-primary-content);
}

.library-reader-tutor__pending .dsy-chat-bubble {
    align-items: center;
    color: var(--reader-muted);
    display: inline-flex;
    gap: .5rem;
    min-height: 2.75rem;
}

.library-reader-tutor__pending .dsy-loading {
    color: var(--reader-primary);
    flex: 0 0 auto;
}

.library-reader-tutor__thread .dsy-chat-bubble :where(p, ul) {
    margin: 0;
}

.library-reader-tutor__thread .dsy-chat-bubble p + p,
.library-reader-tutor__thread .dsy-chat-bubble p + ul,
.library-reader-tutor__thread .dsy-chat-bubble ul + p {
    margin-top: .625rem;
}

.library-reader-tutor__thread .dsy-chat-bubble ul {
    list-style: disc;
    padding-left: 1.125rem;
}

.library-reader-tutor__thread .katex-display {
    max-width: 100%;
    overflow-x: auto;
    padding-block: .375rem;
}

.library-reader-tutor__avatar {
    align-items: center;
    background: var(--reader-primary);
    border-radius: 50%;
    color: var(--reader-primary-content);
    display: flex;
    height: 2rem;
    justify-content: center;
    width: 2rem;
}

.library-reader-tutor__result-meta {
    align-items: center;
    border-top: 1px solid var(--reader-line);
    color: var(--reader-subtle);
    display: flex;
    flex-wrap: wrap;
    font-size: .6875rem;
    gap: .375rem .625rem;
    margin-top: .75rem;
    padding-top: .625rem;
}

.library-reader-tutor__steps {
    border-top: 1px solid var(--reader-line);
    margin-top: .75rem;
    padding-top: .375rem;
}

.library-reader-tutor__steps details {
    border-bottom: 1px solid var(--reader-line);
}

.library-reader-tutor__steps summary {
    cursor: pointer;
    font-size: .75rem;
    font-weight: 700;
    min-height: 2.75rem;
    padding: .75rem 1.75rem .75rem 0;
}

.library-reader-tutor__steps p {
    color: var(--reader-muted);
    font-size: .75rem;
    line-height: 1.6;
    padding: 0 0 .75rem;
}

.library-reader-tutor__practice {
    background: color-mix(in oklab, var(--reader-accent) 7%, var(--reader-bg));
    border-color: color-mix(in oklab, var(--reader-accent) 22%, var(--reader-line));
    margin-top: .75rem;
    overflow: hidden;
}

.library-reader-tutor__practice .dsy-card-body {
    gap: .625rem;
    padding: .875rem;
}

.library-reader-tutor__practice-eyebrow,
.library-reader-tutor__progress-header {
    align-items: center;
    display: flex;
    gap: .75rem;
    justify-content: space-between;
}

.library-reader-tutor__practice-eyebrow > span:first-child {
    color: var(--reader-accent);
    font-size: .6875rem;
    font-weight: 800;
    letter-spacing: .045em;
    text-transform: uppercase;
}

.library-reader-tutor__practice-title {
    color: var(--color-neutral-content);
    font-size: .8125rem;
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
    text-wrap: balance;
}

.library-reader-tutor__practice-statement {
    color: var(--color-neutral-content);
    font-size: .8125rem;
    line-height: 1.6;
    text-wrap: pretty;
}

.library-reader-tutor__practice-statement :where(p, ul) {
    margin: 0;
}

.library-reader-tutor__practice-hint {
    background: color-mix(in oklab, var(--reader-panel) 72%, transparent);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-field);
}

.library-reader-tutor__practice-hint > .dsy-collapse-title {
    color: var(--reader-muted);
    font-size: .75rem;
    font-weight: 700;
    min-height: 3rem;
    padding-block: .7rem;
}

.library-reader-tutor__practice-hint > .dsy-collapse-content {
    color: var(--reader-muted);
    font-size: .75rem;
    line-height: 1.55;
}

.library-reader-tutor__practice .dsy-card-actions {
    justify-content: flex-end;
    margin-top: .125rem;
}

.library-reader-tutor__practice .dsy-card-actions .dsy-btn {
    min-height: 3rem;
}

.library-reader-tutor__progress {
    background: color-mix(in oklab, var(--reader-bg) 82%, transparent);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-field);
    display: grid;
    gap: .5rem;
    margin-top: .75rem;
    padding: .75rem;
}

.library-reader-tutor__progress-header > div {
    display: grid;
    gap: .1rem;
    min-width: 0;
}

.library-reader-tutor__progress-header strong {
    color: var(--color-neutral-content);
    font-size: .75rem;
    line-height: 1.35;
}

.library-reader-tutor__progress-header small,
.library-reader-tutor__progress-delta {
    color: var(--reader-muted);
    font-size: .6875rem;
    line-height: 1.45;
}

.library-reader-tutor__progress-value {
    color: var(--color-neutral-content);
    flex: 0 0 auto;
    font-size: .875rem;
    font-variant-numeric: tabular-nums;
    font-weight: 800;
}

.library-reader-tutor__progress .dsy-progress {
    height: .4rem;
    width: 100%;
}

.library-reader-tutor__composer {
    background: var(--reader-panel);
    border-top: 1px solid var(--reader-line);
    display: flex;
    flex: 0 1 auto;
    flex-direction: column;
    gap: .625rem;
    max-height: 72%;
    min-height: 0;
    overflow: hidden;
    position: relative;
}

.library-reader-tutor__exercise,
.library-reader-tutor__answer {
    background: color-mix(in oklab, var(--reader-primary) 7%, var(--reader-bg));
    border: 1px solid color-mix(in oklab, var(--reader-primary) 26%, var(--reader-line));
    border-radius: var(--radius-box);
    display: grid;
    flex: 0 1 auto;
    gap: .5rem;
    max-height: min(22rem, 42dvh);
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: .625rem;
    scrollbar-gutter: stable;
    touch-action: pan-y;
    -webkit-overflow-scrolling: touch;
}

.library-reader-tutor__composer > :where(
    .library-reader-ai__status,
    .library-reader-tutor__target,
    .library-reader-tutor__composer-shell
) {
    flex: 0 0 auto;
}

.library-reader-tutor__label-row {
    align-items: center;
    display: flex;
    gap: .75rem;
    justify-content: space-between;
}

.library-reader-tutor__label-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .25rem;
    justify-content: flex-end;
}

.library-reader-tutor__label-row .dsy-btn,
.library-reader-tutor__label-actions .dsy-btn {
    color: var(--reader-muted);
    min-height: 2.75rem;
}

.library-reader-tutor__selection-alert {
    align-items: flex-start;
    border-color: var(--reader-line);
    font-size: .75rem;
    gap: .5rem;
    line-height: 1.5;
    min-height: 2.75rem;
    padding: .625rem .75rem;
}

.library-reader-tutor__selection-alert i {
    font-size: .875rem;
    margin-top: .15rem;
}

.library-reader-tutor__detection {
    background: color-mix(in oklab, var(--reader-bg) 76%, transparent);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-field);
    display: grid;
    gap: .625rem;
    padding: .75rem;
}

.library-reader-tutor__detection-badges {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: .375rem;
}

.library-reader-tutor__detection .dsy-badge {
    gap: .3rem;
    min-height: 1.625rem;
}

.library-reader-tutor__detection > p {
    color: var(--reader-muted);
    font-size: .75rem;
    line-height: 1.55;
    margin: 0;
    text-wrap: pretty;
}

.library-reader-tutor__choices {
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-field);
    margin: 0;
    min-width: 0;
    padding: .375rem;
}

.library-reader-tutor__choices legend {
    color: var(--color-neutral-content);
    font-size: .75rem;
    font-weight: 700;
    line-height: 1.4;
    margin-left: .25rem;
    padding-inline: .375rem;
}

.library-reader-tutor__choices .dsy-list {
    gap: .25rem;
}

.library-reader-tutor__choices .dsy-list-row {
    padding: 0;
}

.library-reader-tutor__choice {
    align-items: center;
    border-radius: calc(var(--radius-field) - 1px);
    cursor: pointer;
    display: grid;
    gap: .75rem;
    grid-template-columns: auto minmax(0, 1fr);
    min-height: 2.75rem;
    padding: .5rem .625rem;
    transition-duration: 140ms;
    transition-property: background-color, color;
    transition-timing-function: cubic-bezier(.2, 0, 0, 1);
    width: 100%;
}

.library-reader-tutor__choice:hover,
.library-reader-tutor__choice:has(.dsy-radio:checked) {
    background: color-mix(in oklab, var(--reader-accent) 11%, var(--reader-bg));
}

.library-reader-tutor__choice-copy {
    display: grid;
    gap: .15rem;
    min-width: 0;
}

.library-reader-tutor__choice-copy strong {
    color: var(--color-neutral-content);
    font-size: .75rem;
    font-weight: 700;
}

.library-reader-tutor__choice-copy small {
    color: var(--reader-subtle);
    display: -webkit-box;
    font-size: .6875rem;
    line-height: 1.4;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.library-reader-tutor__choice .dsy-radio {
    color: var(--reader-accent);
    flex: 0 0 auto;
}

.library-reader-tutor__selection-preview {
    background: color-mix(in oklab, var(--reader-bg) 76%, transparent);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-field);
    overflow: hidden;
}

.library-reader-tutor__selection-preview > div:first-child {
    align-items: center;
    border-bottom: 1px solid var(--reader-line);
    display: flex;
    justify-content: space-between;
    min-height: 2.75rem;
    padding: .25rem .375rem .25rem .75rem;
}

.library-reader-tutor__selection-preview strong {
    color: var(--reader-subtle);
    font-size: .6875rem;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.library-reader-tutor__selection-preview .dsy-btn {
    color: var(--reader-muted);
    min-height: 2.25rem;
}

.library-reader-tutor__selection-preview > div:last-child {
    color: var(--color-neutral-content);
    font-size: .8125rem;
    line-height: 1.6;
    max-height: 12rem;
    overflow: auto;
    padding: .75rem;
}

.library-reader-tutor__selection-preview :where(p, ul) {
    margin: 0;
}

.library-reader-tutor__selection-preview .katex-display {
    max-width: 100%;
    overflow-x: auto;
}

.library-reader-tutor__actions {
    display: grid;
    gap: .375rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.library-reader-tutor .dsy-textarea {
    background: var(--reader-bg);
    border-color: var(--reader-line);
    color: var(--color-neutral-content);
    font-size: .875rem;
    line-height: 1.55;
    min-height: 5.5rem;
    resize: vertical;
    width: 100%;
}

.library-reader-tutor .dsy-textarea::placeholder {
    color: var(--reader-muted);
    opacity: 1;
}

.library-reader-tutor .dsy-textarea:focus {
    border-color: var(--reader-accent);
    outline: 2px solid color-mix(in oklab, var(--reader-accent) 35%, transparent);
    outline-offset: 1px;
}

.library-reader-tutor__message {
    background: transparent !important;
    border: 0 !important;
    border-radius: 0;
    height: 3rem;
    max-height: 8rem;
    min-height: 3rem !important;
    outline: 0 !important;
    padding: .75rem .375rem;
    resize: none !important;
}

.library-reader-tutor__target {
    align-items: center;
    color: var(--reader-muted);
    display: inline-flex;
    font-size: .75rem;
    font-weight: 700;
    gap: .4rem;
    min-height: 1.75rem;
    padding-inline: .25rem;
    width: fit-content;
}

.library-reader-tutor__target i {
    color: var(--reader-primary);
}

.library-reader-tutor__composer-shell {
    align-items: end;
    background: var(--reader-bg);
    border: 1px solid var(--reader-line);
    border-radius: calc(var(--radius-box) + .25rem);
    display: grid;
    gap: .25rem;
    grid-template-columns: 3rem minmax(0, 1fr) 3rem;
    padding: .25rem;
    transition-duration: 150ms;
    transition-property: border-color, box-shadow;
    transition-timing-function: cubic-bezier(.2, 0, 0, 1);
}

.library-reader-tutor__composer-shell:focus-within {
    border-color: var(--reader-primary);
    box-shadow: 0 0 0 2px color-mix(in oklab, var(--reader-primary) 30%, transparent);
}

.library-reader-tutor__add,
.library-reader-tutor__send {
    height: 2.75rem;
    min-height: 2.75rem;
    min-width: 2.75rem;
    width: 2.75rem;
}

.library-reader-tutor__add {
    background: var(--reader-panel-strong);
    border-color: transparent;
    color: var(--color-neutral-content);
}

.library-reader-tutor__add:hover,
.library-reader-tutor__add:focus-visible {
    background: color-mix(in oklab, var(--reader-primary) 22%, var(--reader-panel-strong));
}

.library-reader-tutor__send {
    color: var(--reader-accent-content);
}

.library-reader-tutor__tools {
    background: var(--reader-panel-strong);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-box);
    box-shadow: 0 6px 8px rgb(0 0 0 / .18);
    color: var(--color-neutral-content);
    margin-block: .5rem;
    max-height: min(30rem, 70dvh);
    overflow-y: auto;
    position-area: top span-right;
    width: min(21rem, calc(100vw - 2rem));
    z-index: 45;
}

.library-reader-tutor__tools::backdrop {
    background: transparent;
}

.library-reader-tutor__tools .dsy-menu-title {
    color: var(--reader-subtle);
    font-size: .75rem;
    font-weight: 700;
}

.library-reader-tutor__tools :where(button, summary) {
    color: var(--color-neutral-content);
    font-size: .875rem;
    min-height: 2.75rem;
}

.library-reader-tutor__tools > li > button,
.library-reader-tutor__tools > li > details > summary {
    background: transparent !important;
    border: 0 !important;
    color: var(--color-neutral-content) !important;
}

.library-reader-tutor__tools > li > button:hover,
.library-reader-tutor__tools > li > button:focus-visible,
.library-reader-tutor__tools > li > details > summary:hover,
.library-reader-tutor__tools > li > details > summary:focus-visible {
    background: color-mix(in oklab, var(--reader-primary) 18%, var(--reader-panel-strong)) !important;
}

.library-reader-tutor__tools :where(button, summary) i {
    color: var(--reader-primary);
    font-size: 1rem;
    width: 1.25rem;
}

.library-reader-tutor__context-option {
    display: grid;
    gap: .375rem;
    padding: .5rem .75rem .75rem 2.75rem;
}

.library-reader-tutor__context-option > span {
    color: var(--reader-muted);
    font-size: .75rem;
}

.library-reader-tutor__context-option .dsy-select {
    background: var(--reader-bg);
    border-color: var(--reader-line);
    color: var(--color-neutral-content);
    font-size: .8125rem;
    min-height: 2.75rem;
    width: 100%;
}

.library-reader-tutor__scope-controls {
    display: none !important;
}

.library-reader-tutor__composer-actions .dsy-btn:active,
.library-reader-tutor__actions .dsy-btn:active,
.library-reader-tutor__scope .dsy-btn:active {
    transform: scale(.96);
}

.library-reader-tutor__busy {
    align-items: center;
    color: var(--reader-muted);
    display: flex;
    font-size: .75rem;
    gap: .5rem;
    padding: .5rem;
}

.library-reader-ai__more {
    border-radius: 0;
    border-top: 1px solid var(--reader-line);
}

.library-reader-ai__more[open] {
    flex: 0 1 45%;
    max-height: 45%;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.library-reader-ai__more:not([open]) {
    display: none;
}

.library-reader-ai__more > .dsy-collapse-title {
    align-items: center;
    color: var(--color-neutral-content);
    display: flex;
    justify-content: space-between;
    min-height: 3.5rem;
    padding: .875rem 2.75rem .875rem 1rem;
}

.library-reader-ai__more > .dsy-collapse-title span {
    font-size: .8125rem;
    font-weight: 700;
}

.library-reader-ai__more > .dsy-collapse-title small {
    color: var(--reader-subtle);
    font-size: .6875rem;
}

.library-reader-ai__more > .dsy-collapse-content {
    padding: 0;
}

.library-reader-formula {
    background: var(--color-base-100);
    color: var(--color-base-content);
    max-width: 36rem;
    overflow: visible;
    padding: 1.25rem;
    position: relative;
}

.library-reader-formula__close {
    min-height: 2.75rem;
    min-width: 2.75rem;
    position: absolute;
    right: .75rem;
    top: .75rem;
}

.library-reader-formula h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
    padding-right: 3rem;
    text-wrap: balance;
}

.library-reader-formula > p {
    color: color-mix(in oklab, var(--color-base-content) 72%, transparent);
    font-size: .8125rem;
    line-height: 1.6;
    margin: .5rem 0 1rem;
    max-width: 65ch;
}

.library-reader-formula__templates {
    display: flex;
    flex-wrap: wrap;
    gap: .375rem;
    margin-bottom: .75rem;
}

.library-reader-formula__templates .dsy-btn,
.library-reader-formula .dsy-modal-action .dsy-btn {
    min-height: 2.75rem;
}

.library-reader-formula__field math-field {
    --caret-color: var(--color-primary);
    --primary: var(--color-primary);
    --selection-background-color: var(--color-primary);
    --selection-color: var(--color-primary-content);
    background: var(--color-base-100);
    border: 1px solid var(--color-base-300);
    border-radius: var(--radius-field);
    color: var(--color-base-content);
    display: block;
    font-size: 1.25rem;
    min-height: 5rem;
    overflow-x: auto;
    padding: .875rem;
    width: 100%;
}

.library-reader-formula__loading {
    align-items: center;
    background: var(--color-base-200);
    border: 1px solid var(--color-base-300);
    border-radius: var(--radius-field);
    color: color-mix(in oklab, var(--color-base-content) 72%, transparent);
    display: flex;
    font-size: .8125rem;
    justify-content: center;
    min-height: 5rem;
    padding: .875rem;
    text-align: center;
}

.library-reader-formula__field math-field:focus-within {
    border-color: var(--color-primary);
    outline: 2px solid color-mix(in oklab, var(--color-primary) 35%, transparent);
    outline-offset: 2px;
}

.library-reader-formula__error {
    color: var(--color-error) !important;
    font-size: .75rem !important;
    margin: .75rem 0 0 !important;
}

.library-reader-photo__input {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.library-reader-photo {
    background: var(--reader-panel);
    border: 1px solid var(--reader-line);
    color: var(--color-neutral-content);
    display: grid;
    gap: 1rem;
    max-height: min(92dvh, 56rem);
    max-width: 50rem;
    overflow: auto;
    padding: 1.25rem;
}

.library-reader-photo__close {
    color: var(--reader-muted) !important;
    min-height: 3rem;
    min-width: 3rem;
    position: absolute;
    right: .75rem;
    top: .75rem;
}

.library-reader-photo__header {
    align-items: center;
    display: grid;
    gap: .75rem;
    grid-template-columns: auto minmax(0, 1fr);
    padding-right: 3rem;
}

.library-reader-photo__icon {
    align-items: center;
    background: color-mix(in oklab, var(--reader-accent) 14%, var(--reader-bg));
    border: 1px solid color-mix(in oklab, var(--reader-accent) 22%, var(--reader-line));
    border-radius: var(--radius-box);
    color: var(--reader-accent);
    display: inline-flex;
    font-size: 1.125rem;
    height: 2.75rem;
    justify-content: center;
    width: 2.75rem;
}

.library-reader-photo__header h3 {
    color: var(--color-neutral-content);
    font-size: 1.125rem;
    font-weight: 750;
    letter-spacing: -.02em;
    line-height: 1.25;
    margin: 0;
}

.library-reader-photo__header p {
    color: var(--reader-muted);
    font-size: .8125rem;
    line-height: 1.5;
    margin: .2rem 0 0;
}

.library-reader-photo__privacy {
    align-items: flex-start;
    border-color: var(--reader-line);
    font-size: .75rem;
    gap: .625rem;
    line-height: 1.5;
    padding: .75rem;
}

.library-reader-photo__privacy i {
    flex: 0 0 auto;
    margin-top: .15rem;
}

.library-reader-photo__stage {
    align-items: center;
    background: var(--reader-bg);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-box);
    display: flex;
    justify-content: center;
    min-height: 16rem;
    overflow: hidden;
    padding: .75rem;
    position: relative;
}

.library-reader-photo__canvas {
    display: inline-block;
    line-height: 0;
    max-height: 56vh;
    max-width: 100%;
    position: relative;
    transition: filter 160ms ease, opacity 160ms ease;
}

.library-reader-photo__canvas.is-processing {
    filter: blur(1px);
    opacity: .32;
}

.library-reader-photo__canvas img {
    border: 1px solid color-mix(in oklab, var(--reader-line) 80%, white);
    display: block;
    height: auto;
    max-height: 56vh;
    max-width: 100%;
    object-fit: contain;
    user-select: none;
    width: auto;
}

.library-reader-photo__crop-layer {
    cursor: crosshair;
    inset: 0;
    position: absolute;
    touch-action: none;
}

.library-reader-photo__crop {
    border: 2px solid var(--reader-accent);
    box-shadow:
        0 0 0 9999px rgb(3 7 18 / .58),
        0 0 0 1px rgb(255 255 255 / .72) inset;
    pointer-events: none;
    position: absolute;
}

.library-reader-photo__crop::before,
.library-reader-photo__crop::after {
    background: var(--reader-accent);
    content: "";
    height: .625rem;
    position: absolute;
    width: .625rem;
}

.library-reader-photo__crop::before {
    left: -.325rem;
    top: -.325rem;
}

.library-reader-photo__crop::after {
    bottom: -.325rem;
    right: -.325rem;
}

.library-reader-photo__hint {
    background: rgb(3 7 18 / .78);
    border: 1px solid rgb(255 255 255 / .2);
    border-radius: var(--radius-field);
    color: white;
    font-size: .75rem;
    left: 50%;
    line-height: 1.4;
    padding: .5rem .75rem;
    pointer-events: none;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap;
}

.library-reader-photo__loading {
    align-items: center;
    color: var(--color-neutral-content);
    display: grid;
    gap: .5rem;
    justify-items: center;
    left: 50%;
    line-height: 1.4;
    position: absolute;
    text-align: center;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
}

.library-reader-photo__loading .dsy-loading {
    color: var(--reader-accent);
}

.library-reader-photo__loading strong {
    font-size: .875rem;
}

.library-reader-photo__loading small {
    color: var(--reader-muted);
    font-size: .75rem;
}

.library-reader-photo__status {
    color: var(--reader-muted);
    font-size: .75rem;
    line-height: 1.5;
    margin: 0;
}

.library-reader-photo__status.is-error {
    color: var(--color-error);
}

.library-reader-photo__actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: 0;
}

.library-reader-photo__actions .dsy-btn {
    min-height: 3rem;
}

.library-reader-photo__actions .dsy-btn-ghost {
    color: var(--reader-muted) !important;
}

.library-reader-photo__actions .dsy-btn-accent {
    margin-left: auto;
}

.library-reader-photo + .dsy-modal-backdrop button {
    color: transparent;
    font-size: 0;
    text-indent: -9999px;
}

.library-reader-ai__panel > p,
.library-reader-ai--locked p {
    color: var(--reader-muted);
    font-size: .8125rem;
    line-height: 1.6;
    margin: 0 0 .875rem;
    text-wrap: pretty;
}

.library-reader-ai__panel > label {
    color: var(--color-neutral-content);
    display: block;
    font-size: .75rem;
    font-weight: 700;
    margin: .75rem 0 .375rem;
}

.library-reader-ai .dsy-select {
    background: var(--reader-bg);
    border-color: var(--reader-line);
    color: var(--color-neutral-content);
    font-size: .8125rem;
    min-height: 2.75rem;
    width: 100%;
}

.library-reader-ai__action {
    align-items: center;
    color: var(--reader-accent-content);
    display: flex;
    font-size: .8125rem;
    justify-content: space-between;
    margin-top: .875rem;
    min-height: 2.75rem;
    width: 100%;
}

.library-reader-ai__action small {
    color: inherit;
    font-size: .6875rem;
    font-variant-numeric: tabular-nums;
    opacity: .72;
}

.library-reader-ai__action:disabled {
    cursor: wait;
    opacity: .58;
}

.library-reader-ai__result {
    background: var(--color-base-100);
    border: 1px solid var(--color-base-300);
    border-radius: var(--radius-box);
    color: var(--color-base-content);
    margin-top: 1rem;
    max-height: min(26rem, 55vh);
    overflow: auto;
    padding: 1rem;
}

.library-reader-ai__result h3 {
    color: var(--color-base-content);
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 .625rem;
    text-wrap: balance;
}

.library-reader-ai__result h4 {
    color: var(--color-base-content);
    font-size: .75rem;
    font-weight: 800;
    letter-spacing: .05em;
    margin: 1rem 0 .4rem;
    text-transform: uppercase;
}

.library-reader-ai__result p,
.library-reader-ai__result li {
    color: color-mix(in oklab, var(--color-base-content) 88%, transparent);
    font-size: .8125rem;
    line-height: 1.65;
}

.library-reader-ai__result p {
    margin: 0;
    white-space: pre-wrap;
}

.library-reader-ai__result ul {
    border: 0;
    list-style: disc;
    margin: 0;
    padding: 0 0 0 1.1rem;
}

.library-reader-ai__result li {
    display: list-item;
    margin: .35rem 0;
}

.library-reader-ai__result details {
    border-top: 1px solid var(--color-base-300);
    padding: .6rem 0;
}

.library-reader-ai__result summary {
    color: var(--color-base-content);
    cursor: pointer;
    font-size: .8125rem;
    font-weight: 700;
    line-height: 1.5;
}

.library-reader-ai__result details p {
    border-left: 2px solid var(--color-accent);
    margin-top: .5rem;
    padding-left: .625rem;
}

.library-reader-ai__result a {
    align-items: center;
    background: var(--color-neutral);
    border-radius: var(--radius-field);
    color: var(--color-neutral-content);
    display: inline-flex;
    font-size: .8125rem;
    font-weight: 700;
    margin-top: .75rem;
    min-height: 2.75rem;
    padding: .5rem .75rem;
}

.library-reader-ai__result-note {
    background: color-mix(in oklab, var(--color-warning) 20%, var(--color-base-100));
    border-radius: var(--radius-field);
    color: var(--color-warning-content) !important;
    margin-top: .75rem !important;
    padding: .5rem .625rem;
}

.library-reader-ai__status {
    background: color-mix(in oklab, var(--reader-primary) 10%, var(--reader-bg));
    border: 1px solid color-mix(in oklab, var(--reader-primary) 28%, var(--reader-line));
    border-radius: var(--radius-field);
    color: var(--color-neutral-content);
    font-size: .75rem;
    line-height: 1.5;
    padding: .5rem .625rem;
}

.library-reader-ai__status.is-error {
    color: color-mix(in oklab, var(--color-error) 55%, white);
}

.library-reader-ai__footer {
    background: var(--reader-bg);
    border-top: 1px solid var(--reader-line);
    display: flex;
    justify-content: center;
    padding: .4rem .75rem;
}

.library-reader-ai__footer span {
    color: var(--reader-subtle);
    font-size: .6875rem;
    line-height: 1.4;
    text-align: center;
}

.library-reader-ai__footer a {
    display: none;
}

.library-reader-ai--locked {
    padding: 1.125rem 1rem;
}

.library-reader-ai--locked .dsy-btn {
    color: var(--reader-accent-content);
    font-size: .8125rem;
    min-height: 2.75rem;
}

.library-reader__video {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: calc(100dvh - 4.5rem);
    padding: 3rem 1.25rem;
}

.library-reader__video > div {
    max-width: 32.5rem;
    text-align: center;
}

.library-reader__video > div > span {
    align-items: center;
    background: var(--reader-accent);
    border-radius: 50%;
    color: var(--reader-accent-content);
    display: inline-flex;
    font-size: 1.75rem;
    height: 5rem;
    justify-content: center;
    width: 5rem;
}

.library-reader__video h2 {
    color: var(--color-neutral-content);
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.125rem);
    font-weight: 700;
    margin: 1.5rem 0 .8rem;
    text-wrap: balance;
}

.library-reader__video p {
    color: var(--reader-muted);
    font-size: .9375rem;
    line-height: 1.7;
    text-wrap: pretty;
}

.library-reader__video a {
    align-items: center;
    background: var(--reader-accent);
    border-radius: var(--radius-field);
    color: var(--reader-accent-content);
    display: inline-flex;
    font-size: .875rem;
    font-weight: 800;
    gap: .5rem;
    margin-top: 1rem;
    min-height: 2.75rem;
    padding: .75rem 1rem;
}

.library-reader:fullscreen {
    height: 100dvh;
    overflow: hidden;
}

.library-reader:fullscreen .library-reader__workspace {
    height: calc(100dvh - 4.5rem);
}

.library-reader:fullscreen .library-reader__desk,
.library-reader:fullscreen .library-reader__context {
    max-height: calc(100dvh - 8.5rem);
}

@media (min-width: 62rem) {
    .library-reader__desk,
    .library-reader__context {
        height: auto;
        max-height: none;
        min-height: 0;
    }
}

@media (max-width: 74.99rem) {
    .library-reader__header {
        grid-template-columns: auto minmax(0, 1fr) auto;
    }

    .library-reader__header-actions [data-reader-context-label],
    .library-reader__header-actions [data-library-download] span {
        display: none;
    }

    .library-reader__workspace {
        grid-template-columns: minmax(0, 1fr) minmax(23rem, 25rem);
    }
}

@media (max-width: 61.99rem) {
    .library-reader__workspace {
        grid-template-columns: minmax(0, 1fr);
    }

    .library-reader__desk {
        grid-column: 1;
    }

    .library-reader__context {
        border-left: 1px solid var(--reader-line);
        border-top: 0;
        bottom: 0;
        box-shadow: -8px 0 8px color-mix(in oklab, black 18%, transparent);
        height: calc(100dvh - 4.5rem);
        max-height: calc(100dvh - 4.5rem);
        overflow: hidden;
        position: fixed;
        right: 0;
        top: 4.5rem;
        width: min(30rem, 100%);
        z-index: 30;
    }

    .library-reader__context:not([hidden]) {
        display: block;
    }

    .library-reader-ai {
        height: 100%;
        min-height: 0;
    }
}

@media (max-width: 47.99rem) {
    .library-reader__header {
        gap: .5rem;
        min-height: 4rem;
        padding: .5rem .625rem;
    }

    .library-reader__back,
    .library-reader__header-actions .dsy-btn {
        height: 2.75rem;
        min-height: 2.75rem;
        min-width: 2.75rem;
        padding-inline: .75rem;
    }

    .library-reader__back span,
    .library-reader__header-actions [data-library-download] span {
        display: none;
    }

    .library-reader__header-actions [data-library-download] {
        display: none;
    }

    .library-reader__header-actions [data-reader-context-toggle] {
        padding-inline: .75rem;
    }

    .library-reader__header-actions [data-reader-context-label] {
        display: inline;
        font-size: .75rem;
    }

    .library-reader__title span {
        font-size: .6875rem;
    }

    .library-reader__title h1 {
        font-size: .8125rem;
        max-width: 15rem;
    }

    .library-reader__workspace {
        height: calc(100dvh - 4rem);
        min-height: calc(100dvh - 4rem);
    }

    .library-reader__toolbar {
        justify-content: center;
        gap: .5rem;
        min-height: 3.75rem;
        padding: .5rem;
    }

    .library-reader__toolbar > .library-reader__tool-group[aria-label="Zoom"],
    .library-reader__toolbar > .library-reader__toolbar-divider,
    .library-reader__toolbar > .library-reader__view-options,
    .library-reader__toolbar > [data-reader-select-region] {
        display: none;
    }

    .library-reader__toolbar .dsy-btn {
        min-height: 2.75rem;
    }

    .library-reader__view-options .dsy-btn span {
        display: none;
    }

    .library-reader__toolbar [data-reader-select-region] span {
        display: none;
    }

    .library-reader__toolbar [data-reader-select-region] {
        min-width: 2.75rem;
        width: 2.75rem;
    }

    .library-reader__page-control label {
        position: absolute;
        height: 1px;
        margin: -1px;
        overflow: hidden;
        padding: 0;
        width: 1px;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .library-reader__desk {
        min-height: calc(100dvh - 7.75rem);
        padding: 1rem .625rem 3.5rem;
        scrollbar-gutter: auto;
    }

    .library-reader__sheet {
        max-width: none;
    }

    .library-reader__context {
        height: calc(100dvh - 4rem);
        max-height: calc(100dvh - 4rem);
        padding: 0;
        top: 4rem;
    }

    .library-reader__context:not([hidden]) {
        display: block;
    }

    .library-reader-ocr-progress {
        top: 8.25rem;
    }

    .library-reader-ai {
        margin-top: 0;
    }

    .library-reader-ai__heading {
        min-height: 4.5rem;
        padding: .75rem;
    }

    .library-reader-ai__page {
        display: none;
    }

    .library-reader-ai__close {
        display: inline-flex;
    }

    .library-reader-tutor__thread {
        min-height: 0;
        padding: 1rem .75rem;
    }

    .library-reader-tutor__composer {
        padding: .625rem .75rem max(.75rem, env(safe-area-inset-bottom));
    }

    .library-reader-selection__instruction {
        font-size: .6875rem;
        max-width: calc(100% - 1rem);
        white-space: normal;
    }

    .library-reader-selection__actions {
        max-width: calc(100% - 1rem);
    }

    .library-reader-selection__actions .dsy-btn {
        font-size: .6875rem;
        padding-inline: .625rem;
    }

    .library-reader-ocr-blocks__item small {
        font-size: .5625rem;
        padding: .25rem .3rem;
    }

    .library-reader-ai__more > .dsy-collapse-title small {
        display: none;
    }

    .library-reader-formula {
        border-radius: var(--radius-box) var(--radius-box) 0 0;
        margin-top: auto;
        max-width: none;
        width: 100%;
    }

    .library-reader-photo {
        border-radius: var(--radius-box) var(--radius-box) 0 0;
        gap: .75rem;
        margin-top: auto;
        max-height: 94dvh;
        max-width: none;
        padding: 1rem;
        width: 100%;
    }

    .library-reader-photo__stage {
        min-height: 12rem;
        padding: .5rem;
    }

    .library-reader-photo__canvas,
    .library-reader-photo__canvas img {
        max-height: 48dvh;
    }

    .library-reader-photo__actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .library-reader-photo__actions .dsy-btn-accent {
        grid-column: 1 / -1;
        margin-left: 0;
    }

    .library-reader:fullscreen .library-reader__workspace {
        height: calc(100dvh - 4rem);
    }

    .library-reader:fullscreen .library-reader__desk {
        max-height: calc(100dvh - 7.75rem);
    }
}

@media (prefers-reduced-motion: reduce) {
    .library-reader :where(button, a) {
        transition: none;
    }

    .library-reader :where(button, a):active {
        transform: none;
    }

    .library-reader__spinner {
        animation: none;
    }

    .library-reader-tutor__thread {
        scroll-behavior: auto;
    }

    .library-reader-tutor__pending .dsy-loading {
        animation: none;
        opacity: .7;
    }

    .library-reader-ocr-progress .dsy-loading {
        animation: none;
    }
}

/* ==========================================================================
   Lecture mobile — refonte du 27/07/2026
   Zoom gestuel, bottom sheet de l'assistant, chrome immersif, scrubber,
   modes de lecture. Ce bloc est volontairement en fin de fichier : il
   surcharge les règles historiques à specificité égale.
   ========================================================================== */

.library-reader {
    --reader-header-h: 4.5rem;
    --reader-chrome-top: 9.5rem;
    --reader-brightness: 1;
    --reader-keyboard: 0px;
    --reader-safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* --- Modes de lecture ---------------------------------------------------- */

.library-reader__sheet img {
    filter: brightness(var(--reader-brightness));
}

.library-reader[data-reader-theme="sepia"] .library-reader__desk {
    background: #efe4d0;
}

.library-reader[data-reader-theme="sepia"] .library-reader__sheet img {
    filter: sepia(.3) contrast(.96) brightness(var(--reader-brightness));
}

.library-reader[data-reader-theme="dark"] .library-reader__desk {
    background: #0f141b;
}

.library-reader[data-reader-theme="dark"] .library-reader__sheet {
    border-color: #2b3441;
    box-shadow: 0 1rem 2.5rem color-mix(in oklab, black 55%, transparent);
}

.library-reader[data-reader-theme="dark"] .library-reader__sheet img {
    filter: invert(1) hue-rotate(180deg) contrast(.9) brightness(var(--reader-brightness));
}

/* --- Bandeau de progression du changement de page ------------------------ */

.library-reader__toolbar::after {
    background: var(--reader-accent);
    bottom: -1px;
    content: "";
    height: 2px;
    left: 0;
    opacity: 0;
    position: absolute;
    transform-origin: left center;
    transition: opacity 120ms linear;
    width: 100%;
}

.library-reader.is-page-loading .library-reader__toolbar::after {
    animation: library-reader-progress 1.1s cubic-bezier(.4, 0, .2, 1) infinite;
    opacity: 1;
}

@keyframes library-reader-progress {
    0% { transform: scaleX(0); }
    55% { transform: scaleX(.75); }
    100% { transform: scaleX(1); }
}

/* --- Transition de page : plus jamais d'écran vide ------------------------ */

.library-reader__sheet {
    transition:
        opacity 180ms ease,
        transform 240ms cubic-bezier(.2, 0, 0, 1);
    will-change: transform;
}

.library-reader__sheet.is-swiping,
.library-reader__sheet.is-pinching {
    transition: none;
}

.library-reader__sheet.is-turning {
    opacity: .45;
}

.library-reader__sheet.is-entering-next {
    animation: library-reader-enter-next 240ms cubic-bezier(.2, 0, 0, 1);
}

.library-reader__sheet.is-entering-previous {
    animation: library-reader-enter-previous 240ms cubic-bezier(.2, 0, 0, 1);
}

@keyframes library-reader-enter-next {
    from { opacity: .3; transform: translateX(14%); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes library-reader-enter-previous {
    from { opacity: .3; transform: translateX(-14%); }
    to { opacity: 1; transform: translateX(0); }
}

/* --- Menu « Plus d'options » de la barre d'outils ------------------------- */

.library-reader__toolbar-more {
    margin-inline-start: auto;
}

.library-reader__view-menu {
    background: var(--color-base-100);
    border: 1px solid var(--reader-line);
    border-radius: var(--radius-box);
    box-shadow: 0 1.25rem 3rem color-mix(in oklab, black 22%, transparent);
    color: var(--color-base-content);
    margin-block: .5rem;
    max-height: min(32rem, 74dvh);
    overflow-y: auto;
    padding: .5rem;
    position-area: bottom span-left;
    width: min(17rem, calc(100vw - 1.5rem));
    z-index: 45;
}

.library-reader__view-menu::backdrop {
    background: transparent;
}

.library-reader__view-menu-title {
    color: var(--reader-subtle);
    font-size: .6875rem;
    font-weight: 800;
    letter-spacing: .08em;
    margin: .375rem .5rem .25rem;
    text-transform: uppercase;
}

.library-reader__view-menu-item {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: var(--radius-field);
    color: var(--color-base-content);
    display: flex;
    font-size: .875rem;
    font-weight: 600;
    gap: .75rem;
    min-height: 2.75rem;
    padding: .5rem .625rem;
    text-align: start;
    width: 100%;
}

.library-reader__view-menu-item i {
    color: var(--reader-subtle);
    width: 1.125rem;
}

.library-reader__view-menu-item:hover,
.library-reader__view-menu-item:focus-visible {
    background: var(--reader-panel-strong);
}

.library-reader__view-menu-item[aria-pressed="true"] {
    background: color-mix(in oklab, var(--reader-accent) 14%, transparent);
    color: var(--reader-accent);
}

.library-reader__view-menu-item[aria-pressed="true"] i {
    color: inherit;
}

.library-reader__view-menu-zoom {
    align-items: center;
    background: var(--reader-panel-strong);
    border-radius: var(--radius-field);
    display: flex;
    gap: .25rem;
    justify-content: space-between;
    margin: .25rem 0 .5rem;
    padding: .25rem;
}

.library-reader__view-menu-zoom output {
    font-size: .875rem;
    font-variant-numeric: tabular-nums;
    font-weight: 800;
}

.library-reader__theme-switch {
    display: grid;
    gap: .25rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: .25rem 0 .5rem;
}

.library-reader__theme-switch button {
    align-items: center;
    background: var(--reader-panel-strong);
    border: 1px solid transparent;
    border-radius: var(--radius-field);
    color: var(--reader-muted);
    display: flex;
    flex-direction: column;
    font-size: .6875rem;
    font-weight: 700;
    gap: .25rem;
    min-height: 3.25rem;
    justify-content: center;
    padding: .375rem .25rem;
}

.library-reader__theme-switch button[aria-checked="true"] {
    background: color-mix(in oklab, var(--reader-accent) 14%, transparent);
    border-color: var(--reader-accent);
    color: var(--reader-accent);
}

.library-reader__brightness {
    align-items: center;
    display: flex;
    gap: .625rem;
    padding: .25rem .5rem .5rem;
}

.library-reader__brightness i {
    color: var(--reader-subtle);
}

.library-reader__brightness input {
    flex: 1 1 auto;
    min-width: 0;
}

/* Sur grand écran ces commandes sont déjà dans la barre d'outils. */
@media (min-width: 48rem) {
    .library-reader__view-menu-zoom,
    .library-reader__view-menu-item[data-reader-fit-width],
    .library-reader__view-menu-item[data-reader-fit-page],
    .library-reader__view-menu-item[data-reader-fullscreen],
    .library-reader__view-menu-item[data-reader-select-region],
    .library-reader__view-menu-item[data-library-download],
    .library-reader__view-menu-title:first-of-type {
        display: none;
    }
}

/* --- Scrubber de pages (mobile) ------------------------------------------ */

.library-reader__scrubber,
.library-reader__scrim,
.library-reader__grabber {
    display: none;
}

/* --- Bottom sheet de l'assistant ----------------------------------------- */

@media (max-width: 61.99rem) {
    /* Anti-flash : tant que le module n'a pas repris la main, l'assistant
       ne doit pas recouvrir le document. */
    .library-reader[data-library-app-ready="false"] .library-reader__context {
        display: none;
    }

    .library-reader__scrim {
        background: color-mix(in oklab, black 46%, transparent);
        display: block;
        inset: 0;
        opacity: 0;
        pointer-events: none;
        position: fixed;
        transition: opacity 260ms cubic-bezier(.2, 0, 0, 1);
        z-index: 35;
    }

    .library-reader[data-reader-sheet-state="full"] .library-reader__scrim {
        opacity: 1;
        pointer-events: auto;
    }

    .library-reader__context {
        background: var(--color-base-100);
        border: 1px solid var(--reader-line);
        border-bottom: 0;
        border-radius: 1.5rem 1.5rem 0 0;
        bottom: var(--reader-keyboard, 0px);
        box-shadow: 0 -.75rem 2.5rem color-mix(in oklab, black 26%, transparent);
        display: flex;
        flex-direction: column;
        height: 96dvh;
        left: 0;
        max-height: 96dvh;
        min-height: 0;
        overflow: hidden;
        padding: 0;
        position: fixed;
        right: 0;
        top: auto;
        transform: translateY(0);
        transition:
            height 260ms cubic-bezier(.2, 0, 0, 1),
            transform 260ms cubic-bezier(.2, 0, 0, 1),
            bottom 180ms ease;
        width: auto;
        z-index: 40;
    }

    .library-reader__context:not([hidden]) {
        display: flex;
    }

    .library-reader[data-reader-sheet-state="closed"] .library-reader__context {
        pointer-events: none;
        transform: translateY(102%);
        visibility: hidden;
    }

    .library-reader[data-reader-sheet-state="peek"] .library-reader__context {
        height: max(13rem, 34dvh);
    }

    .library-reader[data-reader-sheet-state="half"] .library-reader__context {
        height: 74dvh;
    }

    .library-reader[data-reader-sheet-state="full"] .library-reader__context {
        height: 96dvh;
    }

    .library-reader__context.is-dragging {
        transition: none;
    }

    .library-reader__grabber {
        align-items: center;
        background: transparent;
        border: 0;
        display: flex;
        flex: 0 0 auto;
        justify-content: center;
        min-height: 1.75rem;
        padding: .625rem 0 .25rem;
        touch-action: none;
        width: 100%;
    }

    .library-reader__grabber span {
        background: color-mix(in oklab, var(--color-base-content) 26%, transparent);
        border-radius: 999px;
        display: block;
        height: .25rem;
        width: 2.5rem;
    }

    .library-reader-ai {
        flex: 1 1 auto;
        height: auto;
        margin-top: 0;
        min-height: 0;
    }

    /* Au cran « peek » la conversation n'a pas la place d'exister :
       on privilégie le champ de saisie. */
    .library-reader[data-reader-sheet-state="peek"] .library-reader-tutor__thread,
    .library-reader[data-reader-sheet-state="peek"] .library-reader-ai__more,
    .library-reader[data-reader-sheet-state="peek"] .library-reader-ai__footer {
        display: none;
    }
}

/* --- Chrome immersif + scrubber (mobile) --------------------------------- */

@media (max-width: 47.99rem) {
    .library-reader {
        --reader-header-h: 4rem;
        --reader-chrome-top: 8.25rem;
    }

    /* Le téléchargement redevient accessible : icône seule dans l'en-tête. */
    .library-reader__header-actions [data-library-download] {
        display: inline-flex;
    }

    .library-reader__header {
        left: 0;
        position: absolute;
        right: 0;
        top: 0;
        transition:
            transform 280ms cubic-bezier(.2, 0, 0, 1),
            opacity 180ms linear;
    }

    .library-reader__workspace {
        height: calc(100dvh - var(--reader-header-h));
        margin-top: var(--reader-header-h);
        min-height: 0;
        transition:
            height 280ms cubic-bezier(.2, 0, 0, 1),
            margin-top 280ms cubic-bezier(.2, 0, 0, 1);
    }

    .library-reader__toolbar {
        justify-content: flex-start;
        transition:
            min-height 280ms cubic-bezier(.2, 0, 0, 1),
            height 280ms cubic-bezier(.2, 0, 0, 1),
            padding 280ms cubic-bezier(.2, 0, 0, 1),
            opacity 180ms linear;
    }

    .library-reader.is-immersive .library-reader__header {
        opacity: 0;
        pointer-events: none;
        transform: translateY(-100%);
    }

    .library-reader.is-immersive .library-reader__workspace {
        height: 100dvh;
        margin-top: 0;
    }

    .library-reader.is-immersive .library-reader__toolbar {
        border-bottom-width: 0;
        height: 0;
        min-height: 0;
        opacity: 0;
        overflow: hidden;
        padding-block: 0;
        pointer-events: none;
    }

    .library-reader__desk {
        min-height: 0;
        padding-bottom: calc(4.5rem + var(--reader-safe-bottom));
    }

    .library-reader__scrubber {
        align-items: center;
        backdrop-filter: blur(14px);
        background: color-mix(in oklab, var(--reader-panel) 88%, transparent);
        border-top: 1px solid var(--reader-line);
        bottom: 0;
        display: flex;
        gap: .75rem;
        left: 0;
        padding: .5rem .875rem calc(.5rem + var(--reader-safe-bottom));
        position: fixed;
        right: 0;
        transition: transform 280ms cubic-bezier(.2, 0, 0, 1), opacity 180ms linear;
        z-index: 25;
    }

    .library-reader[data-reader-theme="dark"] .library-reader__scrubber {
        background: color-mix(in oklab, #0f141b 88%, transparent);
        border-top-color: #2b3441;
    }

    .library-reader__scrubber-input {
        appearance: none;
        background: transparent;
        flex: 1 1 auto;
        height: 2.75rem;
        min-width: 0;
        touch-action: none;
    }

    .library-reader__scrubber-input::-webkit-slider-runnable-track {
        background: var(--reader-line);
        border-radius: 999px;
        height: .25rem;
    }

    .library-reader__scrubber-input::-moz-range-track {
        background: var(--reader-line);
        border-radius: 999px;
        height: .25rem;
    }

    .library-reader__scrubber-input::-webkit-slider-thumb {
        appearance: none;
        background: var(--reader-accent);
        border: 2px solid var(--color-base-100);
        border-radius: 50%;
        box-shadow: 0 .125rem .5rem color-mix(in oklab, black 28%, transparent);
        height: 1.25rem;
        margin-top: -.5rem;
        width: 1.25rem;
    }

    .library-reader__scrubber-input::-moz-range-thumb {
        background: var(--reader-accent);
        border: 2px solid var(--color-base-100);
        border-radius: 50%;
        height: 1.25rem;
        width: 1.25rem;
    }

    .library-reader__scrubber-count {
        background: transparent;
        border: 0;
        color: var(--reader-muted);
        flex: 0 0 auto;
        font-size: .8125rem;
        font-variant-numeric: tabular-nums;
        font-weight: 800;
        min-height: 2.75rem;
        padding-inline: .25rem;
    }

    .library-reader__scrubber-bubble {
        background: var(--color-neutral);
        border-radius: var(--radius-selector);
        bottom: calc(100% + .5rem);
        box-shadow: 0 .5rem 1.5rem color-mix(in oklab, black 30%, transparent);
        color: var(--color-neutral-content);
        font-size: .875rem;
        font-variant-numeric: tabular-nums;
        font-weight: 800;
        left: 50%;
        min-width: 3rem;
        padding: .375rem .625rem;
        position: absolute;
        text-align: center;
        transform: translateX(-50%);
    }

    /* L'alerte OCR se cale sur la hauteur réelle du chrome. */
    .library-reader-ocr-progress {
        top: var(--reader-chrome-top);
    }

    .library-reader.is-immersive .library-reader-ocr-progress {
        top: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .library-reader__header,
    .library-reader__workspace,
    .library-reader__toolbar,
    .library-reader__context,
    .library-reader__scrim,
    .library-reader__scrubber,
    .library-reader__sheet {
        transition-duration: 1ms;
    }

    .library-reader__sheet.is-entering-next,
    .library-reader__sheet.is-entering-previous {
        animation: none;
    }

    .library-reader.is-page-loading .library-reader__toolbar::after {
        animation: none;
    }
}

/* L'en-tête passant en absolu sur mobile, on ancre le conteneur et on sort
   le bandeau de notification du flux pour qu'il ne passe pas dessous. */
.library-reader {
    position: relative;
}

@media (max-width: 47.99rem) {
    .library-reader__notice {
        left: .75rem;
        margin: 0;
        max-width: none;
        position: fixed;
        right: .75rem;
        top: calc(var(--reader-header-h) + .5rem);
        z-index: 22;
    }

    .library-reader.is-immersive .library-reader__notice {
        top: .75rem;
    }
}

/* La pagination n'existe qu'à un seul endroit sur mobile : le scrubber du bas,
   dans la zone du pouce. Le pavé « Page [n] sur N » de la barre d'outils
   faisait doublon. */
@media (max-width: 47.99rem) {
    .library-reader__page-control {
        display: none;
    }

    .library-reader__scrubber-count {
        border: 1px solid var(--reader-line);
        border-radius: var(--radius-field);
        padding-inline: .625rem;
    }

    .library-reader__scrubber-jump {
        background: var(--reader-bg);
        border: 1px solid var(--reader-accent);
        border-radius: var(--radius-field);
        color: var(--color-neutral-content);
        flex: 0 0 auto;
        font-size: .875rem;
        font-variant-numeric: tabular-nums;
        height: 2.75rem;
        min-height: 2.75rem;
        text-align: center;
        width: 4.5rem;
    }
}

/* ==========================================================================
   Mobile : une seule barre de commandes, en bas, dans la zone du pouce.
   La barre d'outils du haut ne portait plus que deux flèches et un menu :
   elle coûtait ~64 px de lecture pour rien.
   ========================================================================== */

.library-reader__scrubber-nav,
.library-reader__scrubber-more {
    display: none;
}

@media (max-width: 47.99rem) {
    .library-reader {
        --reader-chrome-top: 4.75rem;
    }

    .library-reader__toolbar,
    .library-reader__toolbar-more {
        display: none;
    }

    .library-reader__workspace {
        grid-template-rows: minmax(0, 1fr);
    }

    .library-reader__scrubber-nav {
        align-items: center;
        background: transparent;
        border: 0;
        border-radius: var(--radius-field);
        color: var(--reader-muted);
        display: inline-flex;
        flex: 0 0 auto;
        justify-content: center;
        min-height: 2.75rem;
        min-width: 2.75rem;
    }

    .library-reader__scrubber-nav:disabled {
        opacity: .3;
    }

    .library-reader__scrubber-more {
        display: inline-flex;
    }

    /* Le menu s'ouvre vers le haut puisque son ancre est désormais en bas. */
    .library-reader__view-menu {
        position-area: top span-left;
    }

    /* Sans barre d'outils, le seul chrome à rétracter est l'en-tête. */
    .library-reader.is-immersive .library-reader__scrubber {
        opacity: 0;
        pointer-events: none;
        transform: translateY(100%);
    }
}

/* ==========================================================================
   Modes de lecture : le thème s'applique à tout le lecteur, pas seulement à
   la page. Redéfinir les jetons de base suffit — en-tête, barre du bas,
   menu, bottom sheet et dialogues suivent.
   ========================================================================== */

.library-reader[data-reader-theme="sepia"] {
    --color-base-100: #f7f0e2;
    --color-base-200: #efe5d2;
    --color-base-300: #ddcdb2;
    --color-base-content: #2f2a22;
}

.library-reader[data-reader-theme="dark"] {
    --color-base-100: #0f141b;
    --color-base-200: #1a212b;
    --color-base-300: #2b3441;
    --color-base-content: #e7ecf3;
    color-scheme: dark;
}

/* Le panneau assistant redéclare ses propres jetons et force color-scheme:
   light : il faut le raccrocher au thème choisi. */
.library-reader[data-reader-theme="dark"] .library-reader-ai,
.library-reader[data-reader-theme="dark"] .library-reader__view-menu {
    color-scheme: dark;
}

.library-reader[data-reader-theme="sepia"] .library-reader-ai {
    --reader-bg: var(--color-base-100);
    --reader-panel: var(--color-base-100);
    --reader-panel-strong: var(--color-base-200);
    --reader-line: var(--color-base-300);
}

.library-reader[data-reader-theme="dark"] .library-reader-ai {
    --reader-bg: var(--color-base-100);
    --reader-panel: var(--color-base-100);
    --reader-panel-strong: var(--color-base-200);
    --reader-line: var(--color-base-300);
}

/* La feuille garde un fond papier propre dans les deux cas : en sombre,
   c'est l'image qui est inversée, pas son support. */
.library-reader[data-reader-theme="dark"] .library-reader__sheet {
    background: #0f141b;
}

@media (max-width: 47.99rem) {
    /* Une page ajustée à la largeur est plus courte que l'écran : la centrer
       évite le grand vide sous le document. « safe » la recale en haut dès
       qu'elle est zoomée et déborde. */
    .library-reader__desk {
        align-items: safe center;
    }
}

/* ==========================================================================
   Mobile : maximiser la conversation dans le panneau assistant.
   Mesuré avant : 546 px de fil sur 810 px de panneau (67 %), soit 264 px
   d'habillage — dont trois redondances avec le contenu du fil lui-même.
   ========================================================================== */

@media (max-width: 47.99rem) {
    /* En-tête sur une seule ligne. Le h2 « Demande-moi simplement » répétait
       la bulle d'accueil juste en dessous : il reste dans l'arbre pour
       aria-labelledby, mais ne prend plus de place. */
    .library-reader-ai__heading {
        gap: .5rem;
        min-height: 3.25rem;
        padding: .375rem .75rem;
    }

    .library-reader-ai__identity h2 {
        clip: rect(0 0 0 0);
        clip-path: inset(50%);
        height: 1px;
        margin: 0;
        overflow: hidden;
        position: absolute;
        white-space: nowrap;
        width: 1px;
    }

    .library-reader-ai__identity > div > span {
        color: var(--color-neutral-content);
        font-size: .9375rem;
        font-weight: 700;
    }

    .library-reader-ai__identity .library-reader-tutor__avatar {
        height: 1.75rem;
        width: 1.75rem;
    }

    /* La page consultée revient dans l'en-tête ; la bande « Je regarde la
       page N » au-dessus du composeur disait exactement la même chose. */
    .library-reader-ai__page {
        display: inline-flex;
    }

    .library-reader-tutor__target {
        display: none;
    }

    /* « Plus d'outils » était écrasé à 0 px par le flex : invisible et
       inutilisable. Les mêmes actions sont dans le menu « + » du composeur. */
    .library-reader-ai__more {
        display: none;
    }

    /* Avertissement IA conservé, argument commercial retiré : une ligne. */
    .library-reader-ai__footer {
        padding: .25rem .75rem;
    }

    .library-reader-ai__footer-perk {
        display: none;
    }

    .library-reader__grabber {
        min-height: 1.5rem;
        padding: .5rem 0 .1875rem;
    }
}

@media (max-width: 47.99rem) {
    /* Dernier resserrage de l'en-tête : le compteur d'aides et la croix
       étaient dimensionnés pour le panneau latéral du bureau. */
    .library-reader-ai__heading {
        min-height: 3rem;
    }

    .library-reader-ai__balance {
        min-height: 0;
        padding: .125rem .25rem;
    }

    .library-reader-ai__close {
        height: 2.5rem;
        min-height: 2.5rem;
        width: 2.5rem;
    }
}

/* ==========================================================================
   Carte « défi » : état actif visible au point de clic.
   ========================================================================== */

.library-reader-tutor__practice.is-active {
    border-color: var(--reader-accent);
    box-shadow: 0 0 0 2px color-mix(in oklab, var(--reader-accent) 35%, transparent);
}

.library-reader-tutor__practice.is-active .dsy-card-actions .dsy-btn {
    pointer-events: none;
}

/* Le composeur était en overflow:hidden : dès qu'un exercice y est joint sur
   un écran bas, une partie du contenu devenait inatteignable. */
.library-reader-tutor__composer {
    overflow-y: auto;
}