/* =========================================================
   LIBRARY
   Bibliotheque des publications arXiv, presentee en rayonnage.
   Les donnees viennent de data/papers.json, genere une fois par
   jour par .github/workflows/site-data.yml via build-papers.mjs.
   ========================================================= */

/* display: flex sur un element masque par l attribut hidden gagne contre la
   feuille du navigateur. On tranche une fois pour toute la vue. */
#papers-view [hidden],
.paper-reader [hidden] {
    display: none !important;
}

#papers-view .papers-wrap {
    max-width: 1180px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 5rem;
    padding-left: max(1.25rem, env(safe-area-inset-left));
    padding-right: max(1.25rem, env(safe-area-inset-right));
}

/* --- HEADER --- */
#papers-view .papers-head {
    text-align: center;
    margin-bottom: 2rem;
}

#papers-view .title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(12px, 2.5vw, 22px);
    flex-wrap: wrap;
}

#papers-view .papers-head h1 {
    font-family: var(--cyber-font);
    font-size: clamp(1.9rem, 5vw, 3rem);
    letter-spacing: 4px;
    margin: 0;
    color: #fff;
    text-shadow: 2px 2px 0 var(--neon-orange), -2px -2px 0 var(--neon-blue);
}

#papers-view .papers-total {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 8px 16px;
    border-radius: 999px;
    font-family: var(--code-font);
    font-weight: 700;
    font-size: clamp(.95rem, 2.4vw, 1.25rem);
    color: var(--neon-purple);
    background: rgba(189, 0, 255, .07);
    border: 1px solid rgba(189, 0, 255, .45);
    box-shadow: 0 0 22px rgba(189, 0, 255, .18), inset 0 0 18px rgba(189, 0, 255, .06);
    line-height: 1;
    white-space: nowrap;
}

#papers-view .papers-total i {
    font-size: .9em;
    filter: drop-shadow(0 0 6px rgba(189, 0, 255, .7));
}

#papers-view .papers-total small {
    font-size: .55em;
    letter-spacing: 2px;
    opacity: .75;
    text-transform: uppercase;
}

#papers-view .papers-sub {
    margin-top: .9rem;
    font-family: var(--code-font);
    font-size: .8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: .55;
}

/* --- BARRE D OUTILS --- */
#papers-view .papers-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

#papers-view .sort-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

#papers-view .sort-btn {
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .1);
    color: #8b949e;
    font-family: var(--code-font);
    font-size: .7rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 9px 13px;
    border-radius: 8px;
    cursor: pointer;
    transition: color .18s ease, border-color .18s ease, background .18s ease;
}

#papers-view .sort-btn:hover {
    color: #e6e6e6;
    border-color: rgba(255, 255, 255, .24);
}

#papers-view .sort-btn.active {
    color: var(--neon-purple);
    border-color: rgba(189, 0, 255, .5);
    background: rgba(189, 0, 255, .08);
}

#papers-view .paper-search {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1 1 200px;
    max-width: 320px;
}

#papers-view .paper-search i {
    position: absolute;
    left: 12px;
    font-size: .8rem;
    color: #6e7681;
    pointer-events: none;
}

#papers-view .paper-search input {
    width: 100%;
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 8px;
    color: #e6e6e6;
    font-family: var(--code-font);
    font-size: .8rem;
    padding: 10px 12px 10px 32px;
    outline: none;
    transition: border-color .18s ease, box-shadow .18s ease;
}

#papers-view .paper-search input:focus {
    border-color: rgba(189, 0, 255, .5);
    box-shadow: 0 0 0 3px rgba(189, 0, 255, .1);
}

/* --- RAYONNAGE --- */
#papers-view .shelf-block {
    margin-bottom: 3.5rem;
}

#papers-view .shelf-title {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 0 0 1.8rem;
    font-family: var(--code-font);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #8b949e;
}

/* Le filet part du titre et traverse la largeur : il tient lieu de
   separation entre deux rayons sans ajouter de bloc. */
#papers-view .shelf-title::after {
    content: '';
    flex: 1 1 auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 255, 255, .16), transparent);
}

#papers-view .shelf-count {
    flex: none;
    order: 1;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: .62rem;
    letter-spacing: 1px;
    color: #6e7681;
    border: 1px solid rgba(255, 255, 255, .1);
}

#papers-view .shelf {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 3rem 2rem;
    align-items: start;
    perspective: 1400px;
}

#papers-view .book {
    --accent: var(--neon-purple);
    --accent-rgb: 189, 0, 255;
    --accent-soft: rgba(var(--accent-rgb), .3);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    padding: 0;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    animation: bookIn .45s ease both;
}

@keyframes bookIn {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* La planche du rayon, dessinee sous chaque livre plutot qu une ligne par
   rangee : la grille se reflow librement sans casser l illusion. */
#papers-view .book-plank {
    display: block;
    width: 92%;
    height: 3px;
    margin-top: 10px;
    border-radius: 3px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .16), transparent);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .8);
}

#papers-view .book-3d {
    position: relative;
    width: 100%;
    /* Une page lettre fait 0.773 de rapport, une A4 0.707 : 3/4 tient entre
       les deux, et les couvertures sont rendues a ce format exact. */
    aspect-ratio: 3 / 4;
    transform-style: preserve-3d;
    transform: rotateY(-11deg) translateZ(0);
    transition: transform .4s cubic-bezier(.22, .61, .36, 1), filter .4s ease;
    filter: drop-shadow(0 14px 22px rgba(0, 0, 0, .65));
}

#papers-view .book:hover .book-3d,
#papers-view .book:focus-visible .book-3d {
    transform: rotateY(-3deg) translateY(-10px);
    filter: drop-shadow(0 22px 32px rgba(0, 0, 0, .8)) drop-shadow(0 0 18px var(--accent-soft));
}

#papers-view .book:focus-visible {
    outline: none;
}

#papers-view .book:focus-visible .book-cover {
    border-color: var(--accent);
}

/* La tranche, un simple bloc sombre decale a gauche. */
#papers-view .book-spine {
    position: absolute;
    top: 1.5%;
    left: 0;
    width: 13px;
    height: 97%;
    border-radius: 3px 0 0 3px;
    background: linear-gradient(90deg, #05070a 0%, #0d1216 55%, #05070a 100%);
    box-shadow: inset -1px 0 0 rgba(255, 255, 255, .06);
}

#papers-view .book-spine::before {
    content: '';
    position: absolute;
    inset: 8% 3px auto 3px;
    height: 84%;
    border-radius: 2px;
    background: linear-gradient(180deg, transparent, var(--accent), transparent);
    opacity: .55;
}

#papers-view .book-cover {
    position: absolute;
    inset: 0 0 0 11px;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    padding: 1.1rem .95rem 1rem;
    border-radius: 3px 6px 6px 3px;
    border: 1px solid rgba(255, 255, 255, .1);
    border-left: none;
    background:
        radial-gradient(120% 80% at 100% 0%, var(--accent-soft) 0%, transparent 55%),
        linear-gradient(155deg, #121820 0%, #0a0e12 55%, #05070a 100%);
    overflow: hidden;
    transition: border-color .3s ease;
}

/* Trame fine facon papier, elle casse l aplat sans peser une image. */
#papers-view .book-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(0deg, rgba(255, 255, 255, .025) 0 1px, transparent 1px 4px);
    pointer-events: none;
}

#papers-view .book-cover::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: linear-gradient(90deg, rgba(0, 0, 0, .55), transparent);
    pointer-events: none;
}

/* Sur une couverture composee la pastille est dans le flux, sur une page
   scannee elle se pose par dessus, en haut a gauche. */
#papers-view .book-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 2;
    font-family: var(--code-font);
    font-size: .54rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 3px 7px;
    border-radius: 999px;
    color: var(--accent);
    border: 1px solid var(--accent-soft);
    background: rgba(6, 8, 11, .82);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    white-space: nowrap;
}

/* --- COUVERTURE SCANNEE : LA PREMIERE PAGE DU PDF --- */
#papers-view .book-page {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* La page est blanche et crue sur un fond noir : on la pose derriere un
   voile tres leger teinte par l accent, pour qu'elle appartienne a la
   planche plutot que d'y etre collee. */
#papers-view .book.has-page .book-cover {
    padding: 0;
    background: #fff;
}

#papers-view .book.has-page .book-cover::before {
    background:
        linear-gradient(180deg, rgba(var(--accent-rgb), .1) 0%, transparent 35%),
        linear-gradient(0deg, rgba(4, 6, 9, .28) 0%, transparent 30%);
    mix-blend-mode: multiply;
    z-index: 1;
}

#papers-view .book.has-page .book-cover::after {
    z-index: 1;
}

/* --- COUVERTURE COMPOSEE : LES TEXTES, ET LES PDF ILLISIBLES --- */
#papers-view .book-type {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    padding-top: 1.7rem;
}

#papers-view .book-type-title {
    font-family: var(--cyber-font);
    font-size: .84rem;
    line-height: 1.35;
    letter-spacing: .4px;
    color: #f2f2f2;
    display: -webkit-box;
    -webkit-line-clamp: 7;
    line-clamp: 7;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

#papers-view .book-type-foot {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-family: var(--code-font);
    font-size: .56rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .72);
}

#papers-view .book-type-ref {
    color: var(--accent);
    opacity: .85;
}

/* --- FICHE SOUS LE LIVRE --- */
#papers-view .book-caption {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 100%;
    margin-top: .8rem;
    text-align: left;
}

#papers-view .book-name {
    font-family: var(--code-font);
    font-size: .74rem;
    line-height: 1.4;
    color: #d7dde3;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color .2s ease;
}

#papers-view .book:hover .book-name {
    color: #fff;
}

#papers-view .book-sub {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    font-family: var(--code-font);
    font-size: .6rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #6e7681;
}

#papers-view .papers-empty,
#papers-view .papers-status {
    grid-column: 1 / -1;
    text-align: center;
    font-family: var(--code-font);
    font-size: .78rem;
    letter-spacing: 1px;
    color: #6e7681;
    padding: 2.5rem 0;
}

#papers-view .papers-status .ok {
    color: var(--neon-green);
}

/* =========================================================
   LISEUSE
   Superposition plein ecran : resume typographie ou PDF arXiv.
   ========================================================= */

.paper-reader {
    position: fixed;
    inset: 0;
    z-index: 4000;
    display: none;
    flex-direction: column;
    background: rgba(4, 5, 7, .97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    overscroll-behavior: contain;
}

.paper-reader.open {
    display: flex;
    animation: readerIn .22s ease both;
}

@keyframes readerIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

body.reader-open {
    overflow: hidden;
}

.paper-reader .pr-bar {
    flex: none;
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .7rem clamp(.7rem, 2vw, 1.2rem);
    padding-left: max(.7rem, env(safe-area-inset-left));
    padding-right: max(.7rem, env(safe-area-inset-right));
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    background: rgba(10, 12, 15, .9);
}

.paper-reader .pr-close {
    flex: none;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .04);
    color: #e6e6e6;
    font-size: 1rem;
    cursor: pointer;
    transition: background .18s ease, color .18s ease;
}

.paper-reader .pr-close:hover {
    background: rgba(255, 0, 60, .12);
    color: var(--neon-red);
}

.paper-reader .pr-heading {
    flex: 1 1 auto;
    min-width: 0;
}

.paper-reader .pr-heading h2 {
    font-family: var(--cyber-font);
    font-size: clamp(.8rem, 2.2vw, 1.05rem);
    line-height: 1.3;
    color: #fff;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.paper-reader .pr-heading .pr-ref {
    display: block;
    font-family: var(--code-font);
    font-size: .6rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent, var(--neon-purple));
    margin-top: 2px;
}

.paper-reader .pr-modes {
    flex: none;
    display: flex;
    gap: 2px;
    padding: 3px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .08);
}

.paper-reader .pr-mode {
    background: none;
    border: none;
    color: #8b949e;
    font-family: var(--code-font);
    font-size: .65rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 7px 12px;
    border-radius: 7px;
    cursor: pointer;
    transition: background .18s ease, color .18s ease;
}

.paper-reader .pr-mode.active {
    background: rgba(var(--accent-rgb, 189, 0, 255), .16);
    color: #fff;
}

.paper-reader .pr-actions {
    flex: none;
    display: flex;
    gap: 6px;
}

.paper-reader .pr-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 12px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .04);
    color: #c9d1d9;
    font-family: var(--code-font);
    font-size: .65rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: border-color .18s ease, color .18s ease;
}

.paper-reader .pr-action:hover {
    border-color: var(--accent, var(--neon-purple));
    color: #fff;
}

.paper-reader .pr-body {
    flex: 1 1 auto;
    min-height: 0;
    position: relative;
}

.paper-reader .pr-pane {
    position: absolute;
    inset: 0;
    display: none;
}

.paper-reader .pr-pane.active {
    display: block;
}

.paper-reader .pr-pane.pr-read {
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

/* --- PAGE DE LECTURE --- */
.paper-reader .pr-page {
    max-width: 760px;
    margin: 0 auto;
    padding: clamp(1.5rem, 5vw, 3.5rem) clamp(1.1rem, 4vw, 2rem) 5rem;
    padding-left: max(clamp(1.1rem, 4vw, 2rem), env(safe-area-inset-left));
    padding-right: max(clamp(1.1rem, 4vw, 2rem), env(safe-area-inset-right));
}

.paper-reader .pr-page h1 {
    font-family: var(--cyber-font);
    font-size: clamp(1.3rem, 4vw, 2.1rem);
    line-height: 1.25;
    color: #fff;
    margin: 0 0 1rem;
}

.paper-reader .pr-subtitle {
    font-family: var(--ui-font);
    font-size: clamp(.95rem, 2.6vw, 1.15rem);
    line-height: 1.45;
    color: #9aa4ae;
    margin: -.4rem 0 1rem;
}

/* Un essai se lit entierement dans la liseuse. Le rendu du markdown est
   celui de la base de connaissances, dont la classe n'est pas liee a sa
   vue : titres, listes, citations et code y sont deja traites. */
.paper-reader .pr-body {
    margin-bottom: 2rem;
}

.paper-reader .pr-body > :first-child {
    margin-top: 0;
}

/* La base de connaissances est de la documentation, elle se lit en mono.
   Un essai est de la prose suivie : sur plusieurs milliers de mots la
   chasse fixe fatigue, on repasse a la police de lecture. Le code, lui,
   garde la sienne. */
.paper-reader .pr-body p,
.paper-reader .pr-body li,
.paper-reader .pr-body blockquote,
.paper-reader .pr-body td,
.paper-reader .pr-body th {
    font-family: var(--ui-font);
    font-size: clamp(.95rem, 2.4vw, 1.06rem);
    line-height: 1.85;
}

.paper-reader .pr-body h2,
.paper-reader .pr-body h3 {
    font-family: var(--cyber-font);
    letter-spacing: .5px;
}

.paper-reader .pr-loading {
    font-family: var(--code-font);
    font-size: .75rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #6e7681;
}

.paper-reader .pr-authors {
    font-family: var(--code-font);
    font-size: .8rem;
    color: var(--accent, var(--neon-purple));
    margin-bottom: 1.6rem;
}

.paper-reader .pr-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 2rem;
}

.paper-reader .pr-fact {
    font-family: var(--code-font);
    font-size: .62rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 5px 10px;
    border-radius: 999px;
    color: #9aa4ae;
    border: 1px solid rgba(255, 255, 255, .1);
    background: rgba(255, 255, 255, .03);
}

.paper-reader .pr-label {
    font-family: var(--code-font);
    font-size: .62rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #6e7681;
    margin-bottom: .7rem;
}

.paper-reader .pr-abstract {
    font-family: var(--ui-font);
    font-size: clamp(.95rem, 2.4vw, 1.08rem);
    line-height: 1.85;
    color: #d7dde3;
    margin-bottom: 2.5rem;
    /* Un resume arXiv est un seul bloc, une lettrine le rend lisible comme
       une premiere page de livre plutot que comme un champ de base. */
    text-align: justify;
    hyphens: auto;
}

.paper-reader .pr-abstract::first-letter {
    float: left;
    font-family: var(--cyber-font);
    font-size: 3.1rem;
    line-height: .82;
    padding: .1rem .5rem .1rem 0;
    color: var(--accent, var(--neon-purple));
}

.paper-reader .pr-note {
    font-family: var(--code-font);
    font-size: .72rem;
    line-height: 1.7;
    color: #8b949e;
    padding: 1rem 1.1rem;
    border-left: 2px solid var(--accent, var(--neon-purple));
    background: rgba(255, 255, 255, .025);
    border-radius: 0 8px 8px 0;
    margin-bottom: 2rem;
}

.paper-reader .pr-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.paper-reader .pr-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    border-radius: 10px;
    border: 1px solid var(--accent, var(--neon-purple));
    background: rgba(var(--accent-rgb, 189, 0, 255), .1);
    color: #fff;
    font-family: var(--code-font);
    font-size: .75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    transition: background .2s ease, box-shadow .2s ease;
}

.paper-reader .pr-cta:hover {
    background: rgba(var(--accent-rgb, 189, 0, 255), .2);
    box-shadow: 0 0 24px rgba(var(--accent-rgb, 189, 0, 255), .25);
}

.paper-reader .pr-cta.is-ghost {
    border-color: rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .03);
    color: #c9d1d9;
}

.paper-reader .pr-cta.is-ghost:hover {
    border-color: var(--accent, var(--neon-purple));
    background: rgba(255, 255, 255, .06);
    box-shadow: none;
    color: #fff;
}

/* --- PANNEAU PDF --- */
.paper-reader .pr-pdf iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #1b1b1b;
}

/* --- MOBILE --- */
@media (max-width: 768px) {
    #papers-view .papers-wrap {
        padding: 1.5rem 1rem 4rem;
    }

    #papers-view .shelf {
        grid-template-columns: repeat(auto-fill, minmax(132px, 1fr));
        gap: 2.6rem 1.1rem;
    }

    #papers-view .book-3d {
        transform: rotateY(-7deg);
    }

    #papers-view .book-type-title {
        font-size: .72rem;
        -webkit-line-clamp: 6;
        line-clamp: 6;
    }

    #papers-view .book-cover {
        padding: .8rem .7rem .75rem;
    }

    #papers-view .book.has-page .book-cover {
        padding: 0;
    }

    #papers-view .book-name {
        font-size: .68rem;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    #papers-view .shelf-title {
        font-size: .65rem;
        letter-spacing: 3px;
        margin-bottom: 1.3rem;
    }

    #papers-view .paper-search {
        max-width: none;
    }

    .paper-reader .pr-heading h2 {
        font-size: .78rem;
    }

    /* Sur mobile la barre garde le titre, le selecteur et la fermeture.
       Les liens externes partent dans le pied de la page de lecture. */
    .paper-reader .pr-actions {
        display: none;
    }

    .paper-reader .pr-mode {
        padding: 7px 9px;
        font-size: .6rem;
    }

    /* Justifier sur 375 px creuse des rivieres blanches entre les mots. */
    .paper-reader .pr-abstract {
        text-align: left;
    }

    .paper-reader .pr-abstract::first-letter {
        font-size: 2.6rem;
    }
}

@media (max-width: 420px) {
    .paper-reader .pr-heading {
        display: none;
    }
}

/* Le survol n existe pas au doigt : le livre reste legerement tourne et le
   retour visuel passe par l appui. */
@media (hover: none) {
    #papers-view .book:active .book-3d {
        transform: rotateY(-4deg) scale(.97);
    }
}

@media (prefers-reduced-motion: reduce) {

    #papers-view .book,
    .paper-reader.open {
        animation: none;
    }

    #papers-view .book-3d {
        transition: none;
    }
}