/* ===================================
   Groupe ALLAM — LIVRE VIRTUEL
   Page : histoire.html   Moteur : book.js
   =================================== */

.book-stage {
    --paper:      #f3ecdd;
    --ink:        #2b2419;
    --ink-soft:   #5a4f3d;
    --ink-faint:  #9a8b70;
    --ink-gold:   #6b4f14;
    --leather:    #131313;
    --turn:       0.9s;

    position: relative;
    min-height: 100vh;
    padding: 8.5rem 1.5rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.book-glow {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 70% 55% at 50% 42%, rgba(201, 168, 76, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse at center, rgba(10, 10, 10, 0.5) 0%, rgba(0, 0, 0, 0.92) 78%);
}

/* ===================================
   CONTENU SOURCE
   Lisible sans JavaScript, masqué une
   fois le livre monté par book.js
   =================================== */

.book-source {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.08rem;
    line-height: 1.85;
    color: var(--text-light);
}

.book-source .src-head {
    text-align: center;
    margin-bottom: 3rem;
}

.book-source h2 {
    font-family: 'Cinzel', serif;
    font-size: 1.3rem;
    color: var(--gold);
    letter-spacing: 2px;
    margin: 3rem 0 1.2rem;
}

.book-source p {
    margin-bottom: 1.2rem;
}

.book-source .src-rules {
    list-style: none;
    margin: 1.2rem 0;
}

.book-source .src-rules li {
    padding-left: 1.5rem;
    margin-bottom: 0.9rem;
    position: relative;
}

.book-source .src-rules li::before {
    content: '\25C6';
    position: absolute;
    left: 0;
    top: 0.55em;
    color: var(--gold-dark);
    font-size: 0.6rem;
}

.book-stage.book-ready .book-source { display: none; }
.book-stage.book-ready .book-frame  { display: flex; }
.book-stage.book-ready .book-toolbar { display: flex; }
.book-stage.book-ready .bk-toc      { display: flex; }

/* ===================================
   SCENE 3D
   =================================== */

.book-frame {
    display: none;
    position: relative;
    z-index: 2;
    justify-content: center;
    align-items: center;
    perspective: 2600px;
    perspective-origin: 50% 46%;
    cursor: pointer;
}

.book {
    position: relative;
    transform-style: preserve-3d;
    transition: transform var(--turn) cubic-bezier(0.5, 0.05, 0.25, 1);
    will-change: transform;
}

.book[data-state="closed"] { transform: translateX(-25%); }
.book[data-state="end"]    { transform: translateX(25%); }
.book.single[data-state]   { transform: none; }

.book-leaves {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
}

/* Reliure centrale */
.book::before {
    content: '';
    position: absolute;
    top: 1.2%;
    bottom: 1.2%;
    left: 50%;
    width: 14px;
    transform: translateX(-7px);
    background: linear-gradient(90deg,
        rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.5) 35%,
        rgba(0, 0, 0, 0.72) 50%, rgba(0, 0, 0, 0.5) 65%, rgba(0, 0, 0, 0) 100%);
    z-index: 0;
    pointer-events: none;
}

.book.single::before,
.book[data-state="closed"]::before,
.book[data-state="end"]::before { display: none; }

.book-shadow {
    position: absolute;
    left: 6%;
    right: 6%;
    bottom: -26px;
    height: 44px;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.75) 0%, transparent 72%);
    filter: blur(9px);
    pointer-events: none;
}

/* ===================================
   FEUILLETS
   =================================== */

.leaf {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    transform-origin: left center;
    transform-style: preserve-3d;
    transition: transform var(--turn) cubic-bezier(0.55, 0.05, 0.25, 1);
    will-change: transform;
}

.book.single .leaf {
    left: 0;
    width: 100%;
}

.leaf.flipped { transform: rotateY(-180deg); }

.leaf-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    overflow: hidden;
    background: var(--paper);
    box-shadow: 0 0 18px rgba(0, 0, 0, 0.35);
}

.leaf-face.back { transform: rotateY(180deg); }

/* Ombre de gouttiere */
.leaf-face::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.leaf-face.front::after {
    background: linear-gradient(90deg, rgba(60, 45, 20, 0.3) 0%, rgba(60, 45, 20, 0.07) 5%, transparent 14%);
}

.leaf-face.back::after {
    background: linear-gradient(270deg, rgba(60, 45, 20, 0.3) 0%, rgba(60, 45, 20, 0.07) 5%, transparent 14%);
}

.book.single .leaf-face::after { opacity: 0.25; }

/* ===================================
   PAGE
   =================================== */

.pg {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    color: var(--ink);
    background-color: var(--paper);
    background-image:
        radial-gradient(ellipse at 18% 12%, rgba(190, 168, 118, 0.16) 0%, transparent 42%),
        radial-gradient(ellipse at 82% 78%, rgba(178, 152, 100, 0.14) 0%, transparent 46%),
        radial-gradient(ellipse at 55% 50%, rgba(255, 252, 244, 0.5) 0%, transparent 62%),
        linear-gradient(160deg, #f6f0e2 0%, #efe6d3 55%, #e7dcc4 100%);
}

.pg-inner {
    position: relative;
    z-index: 1;
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 6% 8% 4%;
    min-width: 0;
}

.pg-head {
    flex: 0 0 auto;
    font-family: 'Cinzel', serif;
    font-size: 0.58rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--ink-faint);
    text-align: center;
    padding-bottom: 0.9rem;
    margin-bottom: 1.1rem;
    border-bottom: 1px solid rgba(120, 100, 60, 0.18);
    min-height: 1.4em;
}

.pg-body {
    flex: 1 1 auto;
    overflow: hidden;
    font-family: 'Cormorant Garamond', Georgia, serif;
    font-size: clamp(0.9rem, 1.55vh, 1.12rem);
    line-height: 1.72;
    text-align: justify;
    hyphens: auto;
    -webkit-hyphens: auto;
}

.pg-body p { margin-bottom: 0.85em; }
.pg-body p:last-child { margin-bottom: 0; }
.pg-body strong { color: var(--ink-gold); font-weight: 600; }
.pg-body sup { font-size: 0.7em; }

.pg-body .lead {
    font-size: 1.14em;
    color: #1f1a12;
}

.pg-body .pull {
    text-align: center;
    font-style: italic;
    font-size: 1.08em;
    color: var(--ink-gold);
    margin: 1.1em 0;
}

.pg-body .src-rules { list-style: none; }

.pg-body .src-rules li {
    position: relative;
    padding-left: 1.2em;
    margin-bottom: 0.7em;
    text-align: left;
}

.pg-body .src-rules li::before {
    content: '\25C6';
    position: absolute;
    left: 0;
    top: 0.5em;
    font-size: 0.45em;
    color: var(--gold-dark);
}

/* Lettrine : premiere page de chaque chapitre.
   Exclut le journal et la lettre, dont la premiere ligne est une date
   ou une formule d'adresse — une lettrine y serait deplacee. */
.pg-body.has-drop:not(.journal):not(.letter) > p:first-child::first-letter {
    float: left;
    font-family: 'Cinzel Decorative', serif;
    font-size: 3.4em;
    line-height: 0.82;
    padding: 0.06em 0.12em 0 0;
    color: var(--gold-dark);
}

.pg-foot {
    flex: 0 0 auto;
    padding-top: 0.9rem;
    text-align: center;
}

.pg-num {
    font-family: 'Cinzel', serif;
    font-size: 0.62rem;
    letter-spacing: 2px;
    color: var(--ink-faint);
}

.pg-num:not(:empty)::before { content: '\2014\00a0'; }
.pg-num:not(:empty)::after  { content: '\00a0\2014'; }

/* ===================================
   LETTRE (epilogue)
   =================================== */

.pg-body.letter { font-style: italic; text-align: left; }
.pg-body.letter strong { font-style: normal; }
.pg-body.letter .salut { font-size: 1.1em; margin-bottom: 1.2em; }
.pg-body.letter .sign-off { margin-top: 1.4em; }

.pg-body.letter .sign-name {
    font-family: 'Cinzel', serif;
    font-style: normal;
    font-size: 1.05em;
    color: var(--ink-gold);
    margin-bottom: 0.1em;
}

.pg-body.letter .sign-role {
    font-family: 'Cinzel', serif;
    font-style: normal;
    font-size: 0.62em;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--ink-faint);
}

/* ===================================
   JOURNAL
   =================================== */

.pg-body.journal .entry-date {
    position: relative;
    font-family: 'Cinzel', serif;
    font-size: 0.7em;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-align: center;
    color: var(--gold-dark);
    margin: 0.4em 0 1.4em;
}

.pg-body.journal .entry-date::before,
.pg-body.journal .entry-date::after {
    content: '\25C6';
    font-size: 0.6em;
    vertical-align: 0.25em;
    color: rgba(160, 132, 62, 0.55);
    margin: 0 0.9em;
}

.pg-body.journal .entry-sign {
    margin-top: 1.2em;
    font-style: italic;
    text-align: center;
    color: var(--ink-gold);
}

/* ===================================
   OUVERTURE DE CHAPITRE
   =================================== */

.pg-opener .pg-inner {
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10%;
}

.op-num {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(2.6rem, 7vh, 4.6rem);
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px var(--gold-dark);
    letter-spacing: 4px;
}

.op-rule {
    position: relative;
    width: 60%;
    max-width: 200px;
    height: 1px;
    margin: 1.4rem 0;
    background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
}

.op-rule::after {
    content: '\25C6';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.5rem;
    color: var(--gold-dark);
    background: #f1e9d8;
    padding: 0 0.5rem;
}

.op-title {
    font-family: 'Cinzel', serif;
    font-size: clamp(1rem, 2.6vh, 1.6rem);
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #4a3a15;
    line-height: 1.4;
}

.op-epi {
    margin-top: 1.6rem;
    font-style: italic;
    font-size: clamp(0.78rem, 1.5vh, 1rem);
    color: var(--ink-soft);
    max-width: 26ch;
    line-height: 1.6;
}

/* ===================================
   COUVERTURE & GARDES
   =================================== */

.pg-cover,
.pg-endpaper {
    background-color: var(--leather);
    background-image: radial-gradient(ellipse at 50% 0%, #262626 0%, #141414 52%, #070707 100%);
    color: var(--cream);
}

.pg-cover .pg-inner,
.pg-endpaper .pg-inner {
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8%;
}

.pg-cover::before {
    content: '';
    position: absolute;
    inset: 5%;
    border: 1px solid rgba(201, 168, 76, 0.5);
    box-shadow:
        inset 0 0 0 4px rgba(0, 0, 0, 0.4),
        inset 0 0 0 5px rgba(201, 168, 76, 0.28),
        inset 0 0 40px rgba(0, 0, 0, 0.6);
    pointer-events: none;
    z-index: 2;
}

.cover-crest {
    font-size: clamp(1rem, 2.4vh, 1.5rem);
    color: var(--gold);
    letter-spacing: 6px;
    margin-bottom: 1.2rem;
}

.cover-house {
    font-family: 'Cinzel', serif;
    font-size: clamp(0.6rem, 1.4vh, 0.8rem);
    letter-spacing: 6px;
    text-transform: uppercase;
    color: var(--gold-dark);
}

.cover-title {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(1.7rem, 5.2vh, 3.2rem);
    line-height: 1.15;
    letter-spacing: 3px;
    margin: 1.4rem 0;
    color: var(--gold);
    background: linear-gradient(180deg, #f0dda0 0%, #c9a84c 45%, #8a6d22 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cover-rule {
    width: 55%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-dark), transparent);
}

.cover-sub {
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: clamp(0.75rem, 1.7vh, 1.05rem);
    color: var(--text-light);
    margin: 1.4rem 0 2rem;
    max-width: 28ch;
    line-height: 1.6;
}

.cover-vol {
    font-family: 'Cinzel', serif;
    font-size: clamp(0.52rem, 1.2vh, 0.68rem);
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.endpaper-mark {
    font-size: clamp(3rem, 12vh, 7rem);
    color: rgba(201, 168, 76, 0.1);
    line-height: 1;
}

.endpaper-motto {
    margin-top: 2rem;
    font-family: 'Cormorant Garamond', serif;
    font-style: italic;
    font-size: clamp(0.75rem, 1.6vh, 1rem);
    color: rgba(201, 168, 76, 0.4);
    max-width: 26ch;
    line-height: 1.7;
}

/* ===================================
   PAGE DE TITRE
   =================================== */

/* Page de respiration entre deux chapitres */
.pg-filler .pg-inner {
    align-items: center;
    justify-content: center;
}

.filler-mark {
    font-size: clamp(0.6rem, 1.4vh, 0.85rem);
    letter-spacing: 12px;
    text-indent: 12px;
    color: rgba(160, 132, 62, 0.35);
}

.filler-mark::before,
.filler-mark::after { content: '\25C6\00a0'; }

.pg-title .pg-inner,
.pg-end .pg-inner {
    align-items: center;
    justify-content: center;
    text-align: center;
}

.tp-house {
    font-family: 'Cinzel', serif;
    font-size: clamp(0.55rem, 1.3vh, 0.72rem);
    letter-spacing: 5px;
    text-transform: uppercase;
    color: var(--ink-faint);
}

.tp-title {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(1.5rem, 4.4vh, 2.6rem);
    color: #4a3a15;
    letter-spacing: 2px;
    margin: 1rem 0;
    line-height: 1.2;
}

.tp-sub {
    font-style: italic;
    font-size: clamp(0.78rem, 1.6vh, 1rem);
    color: var(--ink-soft);
    max-width: 30ch;
    line-height: 1.6;
    margin-bottom: 1.8rem;
}

.tp-stats {
    display: flex;
    gap: clamp(0.8rem, 3vh, 2rem);
}

.tp-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.tp-stat b {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(1.1rem, 3vh, 1.8rem);
    color: var(--gold-dark);
    font-weight: 400;
}

.tp-stat span {
    font-family: 'Cinzel', serif;
    font-size: clamp(0.42rem, 1vh, 0.56rem);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--ink-faint);
    text-align: center;
    max-width: 11ch;
    line-height: 1.4;
}

.end-mark {
    font-family: 'Cinzel Decorative', serif;
    font-size: clamp(1.1rem, 3vh, 1.7rem);
    letter-spacing: 8px;
    text-transform: uppercase;
    color: #4a3a15;
}

.end-note {
    margin-top: 1.4rem;
    font-style: italic;
    font-size: clamp(0.75rem, 1.6vh, 0.98rem);
    color: var(--ink-soft);
    max-width: 28ch;
    line-height: 1.7;
}

/* ===================================
   COMMANDES
   =================================== */

.book-toolbar {
    display: none;
    position: relative;
    z-index: 3;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
    max-width: 100%;
}

.bk-btn {
    flex: 0 0 auto;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.05);
    border: 1px solid rgba(201, 168, 76, 0.28);
    border-radius: 50%;
    color: var(--gold);
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.7rem;
    line-height: 1;
    cursor: pointer;
    transition: all 0.3s ease;
}

.bk-btn:hover:not(:disabled) {
    background: rgba(201, 168, 76, 0.16);
    border-color: var(--gold);
    transform: scale(1.08);
}

.bk-btn:disabled { opacity: 0.22; cursor: default; }

.bk-meter {
    width: min(340px, 52vw);
    text-align: center;
}

.bk-progress {
    height: 1px;
    background: rgba(201, 168, 76, 0.18);
    overflow: hidden;
}

.bk-progress span {
    display: block;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold-light));
    transition: width 0.5s ease;
}

.bk-count {
    margin-top: 0.7rem;
    font-family: 'Cinzel', serif;
    font-size: 0.6rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* ===================================
   SOMMAIRE
   =================================== */

.bk-toc {
    display: none;
    position: relative;
    z-index: 3;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.8rem;
    /* Élément flex : sans le 100% il prendrait 780px même sur un écran
       plus étroit et les puces seraient rognées au lieu de passer à la ligne. */
    max-width: min(780px, 100%);
}

.bk-chip {
    background: none;
    border: 1px solid rgba(201, 168, 76, 0.2);
    color: var(--text-muted);
    font-family: 'Cinzel', serif;
    font-size: 0.58rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 0.45rem 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.bk-chip:hover {
    border-color: rgba(201, 168, 76, 0.5);
    color: var(--gold-light);
}

.bk-chip.current {
    border-color: var(--gold);
    color: var(--gold);
    background: rgba(201, 168, 76, 0.08);
}

.bk-hint {
    position: relative;
    z-index: 3;
    margin-top: 1.4rem;
    font-family: 'Cinzel', serif;
    font-size: 0.55rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity 0.6s ease;
}

.book-ready .bk-hint { opacity: 0.75; }
.book-ready.turned .bk-hint { opacity: 0; }

/* Rig de mesure invisible */
.bk-measure {
    position: absolute;
    left: -99999px;
    top: 0;
    visibility: hidden;
    pointer-events: none;
}

/* ===================================
   RESPONSIVE
   =================================== */

@media (max-width: 820px) {
    .book-stage { min-height: auto; padding: 7rem 1rem 3rem; }
    .book-toolbar { gap: 0.9rem; margin-top: 2rem; }
    .bk-btn { width: 40px; height: 40px; font-size: 1.4rem; }
    .bk-meter { width: min(340px, 45vw); }
    .bk-toc { margin-top: 1.2rem; gap: 0.35rem; }
    .bk-chip { font-size: 0.5rem; padding: 0.35rem 0.6rem; letter-spacing: 1px; }
    .pg-inner { padding: 7% 8% 4%; }
    .pg-head { font-size: 0.52rem; letter-spacing: 2px; }
    .book-shadow { bottom: -18px; height: 30px; }
}

@media (prefers-reduced-motion: reduce) {
    .book,
    .leaf { transition-duration: 0.01ms; }
}