:root{--blue:#0061AA;--cyan:#28DCEA;--navy:#0B2350}
*{box-sizing:border-box}
html,body{margin:0;height:100%;font-family:"Hanken Grotesk",system-ui,sans-serif;background:var(--navy);color:#fff}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.fb-app{position:relative;height:100vh;height:100dvh;overflow:hidden}
.fb-bg{position:absolute;inset:-20px;background:var(--fb-bg) center/cover no-repeat;filter:saturate(.8) contrast(.85) blur(3px)}
.fb-ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,35,80,.8),rgba(11,35,80,.68) 50%,rgba(11,35,80,.84))}
.fb-top{position:absolute;top:0;left:0;right:0;z-index:3;display:flex;align-items:center;gap:18px;padding:16px 26px}
.fb-logo img{display:block;height:28px}
.fb-head{flex:1;min-width:0;padding-left:18px;border-left:1px solid rgba(255,255,255,.25)}
.fb-kicker{display:block;color:var(--cyan);font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
.fb-title{margin:0;font-size:18px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fb-count{flex:0 0 auto;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.12);color:#DCEBFA;font-size:14px}
.fb-back{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.12);color:#fff}
.fb-stage{position:absolute;inset:78px 0 96px;z-index:2;display:flex;align-items:center;justify-content:center;gap:28px;padding:0 12px}
.fb-book{position:relative;display:flex;align-items:center;justify-content:center;cursor:pointer;perspective:2600px}
.fb-spread{position:relative;display:flex;filter:drop-shadow(0 34px 50px rgba(0,0,0,.45))}
.fb-sheet{position:relative;width:var(--pw);height:100%;background:#fff;overflow:hidden}
.fb-sheet canvas{display:block;width:100%;height:100%}
.fb-sheet.is-empty{background:transparent}
.fb-spread:not(.is-single) .fb-sheet.is-left{border-radius:6px 0 0 6px}
.fb-spread:not(.is-single) .fb-sheet.is-right{border-radius:0 6px 6px 0}
.fb-spread.is-single .fb-sheet{border-radius:6px}
.fb-spread:not(.is-single) .fb-sheet.is-left:not(.is-empty)::after{content:"";position:absolute;inset:0 0 0 auto;width:60px;background:linear-gradient(90deg,transparent,rgba(11,35,80,.2))}
.fb-spread:not(.is-single) .fb-sheet.is-right:not(.is-empty)::after{content:"";position:absolute;inset:0 auto 0 0;width:60px;background:linear-gradient(270deg,transparent,rgba(11,35,80,.2))}
.fb-turn{position:absolute;top:0;width:var(--pw);height:100%;transform-style:preserve-3d;transition:transform .64s cubic-bezier(.45,.05,.3,1)}
.fb-turn.to-left{left:var(--pw);transform-origin:left center}.fb-turn.to-left.is-go{transform:rotateY(-180deg)}
.fb-turn.to-right{left:0;transform-origin:right center}.fb-turn.to-right.is-go{transform:rotateY(180deg)}
.fb-turn.is-single{left:0;transform-origin:left center}.fb-turn.is-single.to-right{transform:rotateY(-180deg)}.fb-turn.is-single.to-right.is-go{transform:rotateY(0)}
.fb-face{position:absolute;inset:0;background:#fff;backface-visibility:hidden;overflow:hidden}
.fb-face::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,35,80,.28),transparent 35%,transparent 65%,rgba(11,35,80,.16));opacity:0;transition:opacity .64s}
.fb-turn.is-go .fb-face::after{opacity:1}
.fb-face canvas{display:block;width:100%;height:100%}
.fb-face.is-back{transform:rotateY(180deg)}.fb-face.is-empty{background:transparent}
.fb-nav{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:58px;height:58px;border:1px solid rgba(255,255,255,.25);border-radius:50%;background:rgba(255,255,255,.1);backdrop-filter:blur(8px);color:#fff;cursor:pointer;transition:background .2s,transform .2s}
.fb-nav:hover{background:var(--cyan);color:var(--navy);transform:scale(1.06)}
.fb-nav svg{width:26px;height:26px}
.fb-bar{position:absolute;bottom:22px;left:50%;z-index:3;transform:translateX(-50%);display:flex;gap:10px}
.fb-btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border:1px solid rgba(255,255,255,.28);border-radius:14px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);color:#fff;font:inherit;font-weight:700;font-size:15px;text-decoration:none;cursor:pointer;transition:background .2s,color .2s}
.fb-btn:hover{background:rgba(255,255,255,.22)}
.fb-btn.is-main{background:#fff;border-color:#fff;color:var(--blue)}
.fb-app.is-search .fb-find{background:var(--cyan);border-color:var(--cyan);color:var(--navy)}
.fb-search{position:absolute;top:78px;right:20px;bottom:96px;z-index:4;display:none;flex-direction:column;width:360px;padding:18px;border-radius:20px;background:rgba(255,255,255,.97);color:var(--navy);box-shadow:0 24px 50px rgba(0,0,0,.35)}
.fb-app.is-search .fb-search{display:flex}
.fb-search form{display:flex;align-items:center;gap:8px;padding:0 6px 0 12px;border:2px solid var(--blue);border-radius:12px;height:48px;color:#64748B}
.fb-search input{flex:1;min-width:0;border:0;outline:0;font:inherit;font-size:16px;font-weight:600;color:var(--navy);background:transparent}
.fb-close{width:34px;height:34px;border:0;border-radius:8px;background:#EEF3F8;color:var(--navy);font-size:20px;cursor:pointer}
.fb-meta{margin:12px 0 8px;font-size:12.5px;color:#64748B}
.fb-prog{height:4px;border-radius:4px;background:#E6EEF6;margin-bottom:12px}.fb-prog i{display:block;width:0;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .3s}
.fb-res{flex:1;overflow:auto;padding-right:4px}
.fb-hit{display:block;width:100%;margin:0 0 8px;padding:10px 12px;border:1px solid #E6EEF6;border-radius:12px;background:#fff;color:#3A5068;font:inherit;font-size:13px;line-height:1.45;text-align:left;cursor:pointer}
.fb-hit:hover,.fb-hit.is-on{border-color:var(--cyan);background:#F0FCFD}
.fb-hit b{display:block;margin-bottom:3px;color:var(--blue);font-size:12px}
.fb-hit mark{background:var(--cyan);color:var(--navy);border-radius:3px;padding:0 2px}
.fb-error{color:#DCEBFA;font-size:16px;text-align:center}.fb-error a{color:var(--cyan)}
.fb-loading{display:flex;flex-direction:column;align-items:center;gap:14px;color:#DCEBFA}
.fb-loading span{width:42px;height:42px;border:4px solid rgba(255,255,255,.2);border-top-color:var(--cyan);border-radius:50%;animation:fbspin 1s linear infinite}
@keyframes fbspin{to{transform:rotate(360deg)}}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
@media(max-width:760px){.fb-top{padding:12px 14px;gap:10px}.fb-head{padding-left:10px}.fb-title{font-size:15px}.fb-count{display:none}.fb-nav{display:none}.fb-stage{inset:66px 0 92px}.fb-btn{padding:12px 14px;font-size:14px}.fb-btn span{display:none}.fb-search{inset:66px 10px 92px}}
@media(prefers-reduced-motion:reduce){.fb-turn{transition:none}}
@media print{.fb-app{display:none}}
@media(min-width:761px){.fb-app.is-search .fb-stage{right:390px}}
.fb-app.is-full .fb-full{background:var(--cyan);border-color:var(--cyan);color:var(--navy)}

.fb-zoomwrap{transition:transform .25s ease}
.fb-app.is-zoom .fb-book{cursor:zoom-out}
.fb-app.is-zoom .fb-stage{overflow:hidden}
.fb-btn.is-icon{padding:13px 14px}
.fb-ocr[disabled]{opacity:.85;cursor:progress}
@media(max-width:760px){.fb-zoom{display:none}}

/* Boutons plus compacts, pages plus grandes */
.fb-top{padding:10px 22px}
.fb-stage{inset:58px 0 66px;gap:14px}
.fb-bar{bottom:12px;gap:6px}
.fb-btn{padding:8px 14px;border-radius:11px;font-size:13.5px;gap:7px;white-space:nowrap}
.fb-btn svg{width:17px;height:17px}
.fb-btn.is-icon{padding:8px 10px}
.fb-nav{width:46px;height:46px}
.fb-nav svg{width:22px;height:22px}
.fb-search{top:58px;bottom:66px}
@media(min-width:761px){.fb-app.is-search .fb-stage{right:380px}}
/* Animation douce quand la page s'affiche ou change d'un coup */
@keyframes fbIn{from{opacity:0;transform:translateY(8px) scale(.985)}to{opacity:1;transform:none}}
.fb-spread.fb-in{animation:fbIn .35s ease both}
.fb-spread.fb-out-l{transition:transform .22s ease,opacity .22s ease;transform:translateX(-40px);opacity:0}
.fb-spread.fb-out-r{transition:transform .22s ease,opacity .22s ease;transform:translateX(40px);opacity:0}
.fb-turn .fb-face.is-back:not(:has(canvas)){background:#fff}
@media(max-width:760px){.fb-stage{inset:56px 0 64px}.fb-btn{padding:9px 11px}}
@media(prefers-reduced-motion:reduce){.fb-spread.fb-in{animation:none}}