/* PDF Flip / Digital Comics Library - Prototype */
.pdfflip-app{--bg:#0b0c10;--panel:#15171d;--panel2:#1c1f27;--text:#f4f5f7;--muted:#a8adb8;--accent:#e63946;--line:rgba(255,255,255,.09);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);min-height:100vh;border-radius:18px;overflow:hidden}
.pdfflip-header{height:72px;display:flex;align-items:center;gap:34px;padding:0 34px;border-bottom:1px solid var(--line);background:rgba(11,12,16,.96);position:sticky;top:0;z-index:10}
.pdfflip-brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-size:24px;font-weight:800;letter-spacing:-.8px}.pdfflip-brand-mark{width:34px;height:34px;border-radius:9px;background:var(--accent);display:grid;place-items:center;font-size:15px}
.pdfflip-header nav{display:flex;gap:26px;flex:1}.pdfflip-header nav a,.pdfflip-user{color:var(--muted);text-decoration:none;font-size:14px}.pdfflip-header nav a:hover{color:#fff}.pdfflip-user{display:flex;gap:9px;align-items:center}
.pdfflip-hero{position:relative;min-height:480px;background:radial-gradient(circle at 78% 45%,rgba(230,57,70,.22),transparent 32%),linear-gradient(115deg,#0b0c10 20%,#14151b 100%);overflow:hidden}
.pdfflip-slides{position:relative;min-height:480px}.pdfflip-slide{position:absolute;inset:0;display:flex;align-items:center;gap:54px;padding:58px 9%;opacity:0;transform:translateX(20px);transition:.45s ease;pointer-events:none}.pdfflip-slide.is-active{opacity:1;transform:none;pointer-events:auto}
.pdfflip-hero-cover{width:245px;flex:0 0 245px}.cover-placeholder{height:320px;border-radius:7px;background:linear-gradient(145deg,#30343e,#121318);box-shadow:0 24px 55px rgba(0,0,0,.5);padding:20px;display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;position:relative}.cover-placeholder:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,transparent 0 18px,rgba(255,255,255,.035) 19px 20px)}.cover-placeholder span,.cover-placeholder strong{position:relative}.cover-placeholder span{font-size:12px;font-weight:800;letter-spacing:3px;color:#fff}.cover-placeholder strong{font-size:23px;line-height:1.05;margin-top:8px}
.pdfflip-hero-info{max-width:570px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:2px;color:var(--accent)}.pdfflip-hero-info h1{font-size:clamp(34px,5vw,62px);line-height:.98;margin:10px 0 15px;letter-spacing:-2px}.pdfflip-meta{font-size:14px;color:#d2d5dc}.pdfflip-meta b{margin:0 7px;color:var(--accent)}.pdfflip-hero-info p{color:var(--muted);font-size:16px;line-height:1.65;max-width:530px}.pdfflip-button{border:0;background:var(--accent);color:#fff;padding:13px 19px;border-radius:7px;font-weight:800;cursor:pointer}.pdfflip-button span{margin-left:15px}
.pdfflip-slider-controls{position:absolute;right:8%;bottom:28px;display:flex;align-items:center;gap:15px}.pdfflip-slider-controls button{border:1px solid var(--line);background:rgba(0,0,0,.25);color:#fff;width:34px;height:34px;border-radius:50%;cursor:pointer}.pdfflip-slider-controls .dots{display:flex;gap:7px}.pdfflip-slider-controls .dots button{width:7px;height:7px;padding:0;border:0;background:#777}.pdfflip-slider-controls .dots button.active{background:#fff;width:23px;border-radius:8px}
.pdfflip-section{padding:45px 5% 8px}.pdfflip-section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:23px}.pdfflip-section-heading h2{margin:4px 0 0;font-size:27px;letter-spacing:-.7px}.pdfflip-section-heading>a{color:var(--muted);text-decoration:none;font-size:13px}
.pdfflip-card-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}.pdfflip-card{min-width:0}.pdfflip-cover{position:relative}.pdfflip-cover.small .cover-placeholder{height:270px}.pdfflip-card h3{font-size:15px;margin:11px 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pdfflip-card p{font-size:12px;color:var(--muted);margin:0;line-height:1.4}.progress{position:absolute;left:9px;right:9px;bottom:9px;height:4px;background:rgba(0,0,0,.6);border-radius:8px;overflow:hidden}.progress i{display:block;height:100%;background:var(--accent)}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-bottom:48px}.category-card{padding:22px 20px;background:var(--panel);border:1px solid var(--line);border-radius:10px;color:#fff;text-decoration:none;display:flex;justify-content:space-between;transition:.2s}.category-card:hover{background:var(--panel2);transform:translateY(-2px)}
.pdfflip-footer{padding:28px 5%;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:12px}.pdfflip-footer strong{color:#fff}
@media(max-width:900px){.pdfflip-card-row{grid-template-columns:repeat(3,1fr)}.pdfflip-slide{padding:45px 6%;gap:30px}.pdfflip-hero-cover{width:190px;flex-basis:190px}.pdfflip-cover.small .cover-placeholder{height:230px}.pdfflip-header nav{display:none}}
@media(max-width:620px){.pdfflip-header{padding:0 18px}.pdfflip-user span{display:none}.pdfflip-slide{padding:35px 7%;gap:20px}.pdfflip-hero-cover{width:125px;flex-basis:125px}.pdfflip-slide .cover-placeholder{height:205px;padding:13px}.pdfflip-slide .cover-placeholder strong{font-size:17px}.pdfflip-hero-info h1{font-size:31px;letter-spacing:-1px}.pdfflip-hero-info p{font-size:13px}.pdfflip-card-row{grid-template-columns:repeat(2,1fr)}.pdfflip-cover.small .cover-placeholder{height:220px}.category-grid{grid-template-columns:1fr}.pdfflip-footer{flex-direction:column;gap:8px}}

/* V0.5.3: database-backed catalog */
.pdfflip-hero-cover img,
.pdfflip-cover img { width:100%; height:100%; object-fit:cover; display:block; border-radius:inherit; }
.pdfflip-empty, .pdfflip-empty-hero { padding: 2rem; border-radius: 16px; background: rgba(255,255,255,.06); color: inherit; }
.pdfflip-empty-hero { min-height: 360px; display:flex; flex-direction:column; justify-content:center; }
.pdfflip-empty-hero h1 { margin:.35rem 0 .75rem; }
.pdfflip-empty-hero p { max-width: 720px; opacity:.82; }


.pdfflip-debug {
    margin: 0 0 1.25rem;
    padding: .75rem 1rem;
    border: 1px solid rgba(80, 140, 255, .35);
    border-radius: 10px;
    background: rgba(40, 90, 170, .12);
    color: inherit;
    font-size: .9rem;
}
/* V0.6 reading experience */
.pdfflip-book-page{padding:42px 5% 70px}.pdfflip-back{display:inline-block;color:var(--muted);text-decoration:none;margin-bottom:30px;font-size:14px}.pdfflip-back:hover{color:#fff}.pdfflip-book-layout{display:grid;grid-template-columns:minmax(240px,360px) 1fr;gap:60px;max-width:1050px;margin:auto;align-items:start}.pdfflip-book-cover img{display:block;width:100%;max-height:600px;object-fit:contain;border-radius:8px;box-shadow:0 24px 60px rgba(0,0,0,.45)}.pdfflip-book-info{padding-top:15px}.pdfflip-book-info h1{font-size:clamp(38px,5vw,68px);line-height:.98;letter-spacing:-2px;margin:12px 0}.pdfflip-subtitle{font-size:20px;color:#d7d9df;margin:0 0 14px}.pdfflip-longtext{color:var(--muted);line-height:1.8;max-width:760px}.pdfflip-progress-box{margin:28px 0;padding:18px;border:1px solid var(--line);background:var(--panel);border-radius:12px}.pdfflip-progress-box>div:first-child{display:flex;justify-content:space-between;gap:20px;margin-bottom:12px}.pdfflip-progress-box span{color:var(--muted);font-size:13px}.pdfflip-progress{height:6px;border-radius:99px;background:#30333b;overflow:hidden}.pdfflip-progress i{display:block;height:100%;background:var(--accent)}.pdfflip-button{display:inline-flex;align-items:center;gap:20px;background:var(--accent);color:#fff;text-decoration:none;border:0;border-radius:6px;padding:13px 18px;font-weight:800;cursor:pointer}.pdfflip-button:hover{filter:brightness(1.08);color:#fff}.pdfflip-notice{margin:30px auto;padding:30px;max-width:900px;background:#17191f;color:#ddd;border-radius:12px}.pdfflip-cover-link{display:block;color:inherit;text-decoration:none}.pdfflip-card{position:relative}.pdfflip-card a{text-decoration:none;color:inherit}.pdfflip-card .pdfflip-cover img{display:block;width:100%;height:100%;object-fit:cover;border-radius:7px}.pdfflip-category-card{position:relative;min-height:145px;overflow:hidden;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:#fff;background:#15171d;display:flex;align-items:flex-end;padding:20px}.pdfflip-category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;transition:.25s}.pdfflip-category-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.8),rgba(0,0,0,.05))}.pdfflip-category-card:hover img{transform:scale(1.04);opacity:.7}.pdfflip-category-card strong,.pdfflip-category-card span{position:relative;z-index:1}.pdfflip-category-card strong{font-size:18px}.pdfflip-category-card span{margin-left:auto}.pdfflip-login-note{padding:18px;background:var(--panel);border-radius:12px;color:var(--muted)}
.pdfflip-reader{min-height:100vh;background:#090a0d;color:#fff}.pdfflip-reader-header{position:sticky;top:0;z-index:20;height:64px;padding:0 18px;background:#111318;border-bottom:1px solid rgba(255,255,255,.08);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px}.pdfflip-reader-back{color:#ddd;text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pdfflip-reader-title{text-align:center;display:flex;flex-direction:column;gap:2px}.pdfflip-reader-title span{font-size:12px;color:#aeb3bd}.pdfflip-reader-actions{display:flex;justify-content:flex-end;gap:6px}.pdfflip-reader-actions button{width:38px;height:36px;border:1px solid rgba(255,255,255,.12);background:#1b1e25;color:#fff;border-radius:6px;font-size:20px;cursor:pointer}.pdfflip-reader-actions button:disabled{opacity:.35;cursor:not-allowed}.pdfflip-reader-main{min-height:calc(100vh - 64px);padding:30px;display:flex;justify-content:center;align-items:flex-start;position:relative;overflow:auto}.pdfflip-reader-main canvas{background:#fff;box-shadow:0 10px 40px rgba(0,0,0,.55);max-width:100%;height:auto}.pdfflip-reader-main #pdfflip-loading{position:fixed;top:78px;left:50%;transform:translateX(-50%);padding:9px 14px;background:#20232a;border-radius:20px;color:#ddd;font-size:13px;z-index:10}.pdfflip-reader-main #pdfflip-error{max-width:650px;padding:24px;background:#24151a;border:1px solid #65303a;border-radius:12px;color:#ffd8dc}.pdfflip-section .pdfflip-card-row{overflow-x:auto;scrollbar-width:thin}.pdfflip-card-row .pdfflip-card{flex:0 0 215px}.pdfflip-card-row .pdfflip-cover.small{height:300px}.pdfflip-recommendations .pdfflip-card-row{margin-top:4px}.pdfflip-category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
@media(max-width:800px){.pdfflip-book-layout{grid-template-columns:1fr;gap:30px}.pdfflip-book-cover{max-width:300px;margin:auto}.pdfflip-reader-header{grid-template-columns:1fr auto}.pdfflip-reader-title{display:none}.pdfflip-reader-back{max-width:55vw}.pdfflip-reader-main{padding:12px}.pdfflip-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
/* V0.6.1: preserve original cover proportions in every catalog context */
.pdfflip-hero-cover img,
.pdfflip-cover img,
.pdfflip-book-cover img {
    width: 100%;
    height: auto;
    max-height: none;
    object-fit: contain;
    display: block;
    border-radius: 7px;
}

.pdfflip-hero-cover {
    align-self: center;
}

.pdfflip-card .pdfflip-cover.small {
    height: auto;
}

.pdfflip-card .pdfflip-cover.small img {
    height: auto;
}

.pdfflip-category-card {
    aspect-ratio: 1 / 1;
    min-height: 0;
    padding: 20px;
}

.pdfflip-category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media(max-width:900px){
    .pdfflip-hero-cover { width: 190px; flex-basis: 190px; }
}

@media(max-width:620px){
    .pdfflip-hero-cover { width: 125px; flex-basis: 125px; }
}


/* V0.6.2: reader controls, page number navigation and mobile swipe */
.pdfflip-reader{position:relative}
.pdfflip-reader-header{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}
.pdfflip-reader-actions{align-items:center}
.pdfflip-reader-actions button{font-family:inherit;line-height:1}
#pdfflip-fullscreen{font-size:18px}
.pdfflip-reader-main{touch-action:pan-y}
.pdfflip-page-strip{height:54px;display:flex;align-items:center;gap:6px;padding:7px 14px;background:#111318;border-top:1px solid rgba(255,255,255,.08);overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;position:sticky;bottom:0;z-index:20}
.pdfflip-page-strip button{flex:0 0 34px;width:34px;height:34px;border:1px solid rgba(255,255,255,.12);background:#1b1e25;color:#cfd3da;border-radius:6px;font-size:12px;cursor:pointer}
.pdfflip-page-strip button:hover{background:#282c35;color:#fff}
.pdfflip-page-strip button.is-active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:800}
.pdfflip-reader:fullscreen{width:100vw;height:100vh;background:#090a0d}
.pdfflip-reader:fullscreen .pdfflip-reader-main{height:calc(100vh - 118px);min-height:0}
.pdfflip-reader:fullscreen .pdfflip-reader-header{position:relative}
.pdfflip-reader:fullscreen .pdfflip-page-strip{position:absolute;left:0;right:0;bottom:0}
@media(max-width:800px){
  .pdfflip-reader-header{grid-template-columns:minmax(0,1fr) auto;gap:8px;padding:0 10px}
  .pdfflip-reader-back{max-width:48vw;font-size:13px}
  .pdfflip-reader-actions{gap:4px}
  .pdfflip-reader-actions button{width:34px;height:34px}
  .pdfflip-reader-main{padding:8px}
  .pdfflip-page-strip{height:50px;padding:6px 10px}
  .pdfflip-page-strip button{flex-basis:32px;width:32px;height:32px}
}
@media(max-width:520px){
  .pdfflip-reader-actions #pdfflip-zoomout,.pdfflip-reader-actions #pdfflip-zoomin{display:none}
  .pdfflip-reader-back{max-width:42vw}
}

/* V0.6.3: reader zoom, fullscreen touch controls and progress status */
.pdfflip-progress-status{font-size:11px;color:#aeb3bd;min-width:72px;text-align:right;white-space:nowrap}
.pdfflip-progress-status.is-error{color:#ff9da7}
.pdfflip-reader:fullscreen .pdfflip-progress-status{display:inline-block}
.pdfflip-reader-main{overscroll-behavior:contain}
@media(max-width:800px){.pdfflip-progress-status{display:none}.pdfflip-reader-main{touch-action:pan-y pinch-zoom}}


/* V0.6.4: guest reading memory and reliable touch gestures in fullscreen */
#pdfflip-guest-continue{margin-top:14px}
.pdfflip-reader-main{touch-action:none;-webkit-user-select:none;user-select:none}
.pdfflip-reader-main canvas{touch-action:none;will-change:transform}
.pdfflip-reader:fullscreen .pdfflip-reader-main{touch-action:none;overflow:auto;overscroll-behavior:none}
.pdfflip-reader:fullscreen .pdfflip-reader-main canvas{touch-action:none}
@media(max-width:800px){.pdfflip-reader-main{touch-action:none}}