@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');
:root{color-scheme:light;--ink:#231f20;--muted:#6f6869;--brand:#ec1b24;--brand-dark:#c8141c;--brand-deep:#a30f15;--brand-soft:#fdecec;--brand-softer:#fff7f7;--brand-line:#f5c3c5;--font:Poppins,system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;--gutter:40px}*{box-sizing:border-box}body{margin:0;background:#fbf9f9;color:var(--ink);font-family:var(--font)}button,input,a{ -webkit-tap-highlight-color:transparent}button,input{font:inherit}button,.button{border:1px solid #e2dbdb;background:white;border-radius:10px;padding:10px 16px;color:var(--ink);cursor:pointer;text-decoration:none;font-weight:500}button:hover,.button:hover{background:var(--brand-soft)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,.drop-zone:focus-within{outline:3px solid var(--brand);outline-offset:4px}a{color:inherit}.studio-header{padding:25px var(--gutter);display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;border-bottom:1px solid #eee7e7}.brand img{width:80px;height:64px;object-fit:cover;display:block}.studio-link{text-decoration:none;font-size:14px;font-weight:500;white-space:nowrap}.studio-link span{margin-left:16px}main{max-width:1280px;margin:0 auto;padding:0 var(--gutter)}.upload-panel{min-height:calc(100vh - 183px);display:grid;grid-template-columns:1.2fr 1fr;gap:9%;align-items:center;padding:65px 0}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:var(--brand)}h1{font-family:var(--font);font-weight:600}.intro h1{font-size:clamp(40px,4.8vw,70px);line-height:1.12;letter-spacing:-1.8px;margin:24px 0}.intro em{font-style:normal;color:var(--brand);text-decoration:underline;text-decoration-color:var(--brand-line);text-underline-offset:12px;text-decoration-thickness:6px}.intro p{font-size:18px;line-height:1.8;color:var(--muted);margin:30px 0}.features{display:flex;flex-direction:column;gap:12px;font-size:14px;font-weight:500}.features span::first-letter{color:var(--brand)}.upload-card{padding:32px;background:white;border:1px solid #eee6e6;border-radius:24px;box-shadow:0 18px 70px #3a1d1e10}.upload-card label:not(.drop-zone),.share-fallback label{display:block;font-size:14px;font-weight:600;margin:0 0 9px}.upload-card label span{font-weight:400;color:var(--muted)}.upload-card input:not([type=file]),.share-fallback input{width:100%;border:1px solid #e4dddd;background:#fff;border-radius:10px;padding:12px 14px;color:var(--ink)}.drop-zone{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:9px;border:2px dashed #f0b8ba;border-radius:16px;margin:24px 0;padding:32px 14px;background:var(--brand-softer);cursor:pointer}.drop-zone.dragging{background:var(--brand-soft);border-color:var(--brand)}.drop-zone input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.drop-zone strong{max-width:100%;overflow-wrap:anywhere}.drop-zone small{color:#8a8384;font-size:12px;margin-top:12px}.drop-zone .book-symbol{font-size:42px;color:var(--brand)}.primary{width:100%;display:flex;justify-content:space-between;background:var(--brand);color:#fff;border:0;padding:16px 20px;margin-top:22px;border-radius:12px}.primary:hover{background:var(--brand-dark)}.privacy{font-size:12px;text-align:center;line-height:1.6;color:#857e7f;margin:17px 0 0}.reader{padding:30px 0}.reader-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.reader-heading h1{font-size:28px;margin:8px 0;overflow-wrap:anywhere}.reader-heading>div:first-child{min-width:0}.reader-actions{display:flex;flex-wrap:wrap;gap:8px;font-size:12px}.reading-surface{background:radial-gradient(ellipse at center,#efebeb,#dbd4d4);border-radius:20px 20px 0 0;padding:26px 12px 10px}.book-viewport{height:min(65vh,740px);min-height:280px;overflow:auto;display:grid;align-items:center;justify-items:center}.book-mount,#book-mount{width:100%;display:flex;justify-content:center;align-items:center;transform-origin:top center}.flip-page{background:#fff;overflow:hidden;box-shadow:inset 0 0 12px #00000015}.flip-page img{width:100%;height:100%;object-fit:contain;display:block;pointer-events:none}.flip-page:after{content:'';position:absolute;inset:0;box-shadow:inset 8px 0 12px -9px #0007;pointer-events:none}.reader-hint{text-align:center;font-size:12px;color:#5f5859;margin:15px 0 2px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;background:#fff;border:1px solid #e8e1e1;border-radius:0 0 20px 20px;padding:14px 20px}.page-controls,.view-controls{display:flex;align-items:center;gap:9px;font-size:13px}.toolbar button{padding:8px 13px}.toolbar input{width:55px;padding:8px 4px;border:1px solid #e2dbdb;border-radius:7px;text-align:center}.view-controls output{min-width:42px;text-align:center}.status-box{background:#fff;border:1px solid #e8e1e1;padding:18px 24px;border-radius:14px;margin:0 auto 24px;max-width:680px;text-align:center}.status-box.error{background:#fff3f1;color:#a62929}.status-box progress{width:100%;accent-color:var(--brand);height:8px}.status-box p{margin:0 0 10px}.status-box button{margin-top:12px}.share-fallback{padding:0 0 25px;max-width:680px;margin:auto}footer{border-top:1px solid #eee7e7;margin:0 var(--gutter);padding:24px 0;display:flex;justify-content:space-between;font-size:10px;font-weight:600;letter-spacing:1.5px;color:#7d7677}footer span{font-weight:400;letter-spacing:0;font-size:12px}[hidden]{display:none!important}.reader:fullscreen{background:#fbf9f9;padding:20px;width:100%;height:100%;overflow:auto}.reader:fullscreen .book-viewport{height:calc(100vh - 225px)}@media(max-width:760px){:root{--gutter:16px}.studio-header{padding:20px var(--gutter)}.brand img{width:65px;height:52px}.studio-link{font-size:12px}.upload-panel{grid-template-columns:1fr;gap:30px;padding:35px 0}.intro h1{font-size:44px;margin:15px 0}.intro p{font-size:16px;margin:25px 0}.features{flex-direction:row;flex-wrap:wrap;font-size:11px;gap:10px}.upload-card{padding:24px}.reader-heading{align-items:flex-start;flex-direction:column}.reader-heading h1{font-size:24px}.toolbar{flex-wrap:wrap;justify-content:center;padding:12px 8px}.reader-actions{font-size:11px}.reader-actions .button,.reader-actions button{padding:9px 11px}.book-viewport{height:56vh}.reader-hint{font-size:10px}footer{font-size:8px}footer span{font-size:10px}.reader:fullscreen{padding:12px}.reader:fullscreen .book-viewport{height:calc(100dvh - 295px)}}

.brand{display:inline-flex;align-items:center;gap:14px;text-decoration:none}
.brand-name{padding-left:14px;border-left:1px solid #ecdede;font-size:20px;font-weight:600;letter-spacing:-.3px;line-height:1.15;color:var(--ink)}
.studio-nav{display:flex;align-items:center;gap:24px}.studio-nav [aria-current=page]{color:var(--brand)}
@media(max-width:600px){.studio-nav{gap:12px}.studio-nav .studio-link{font-size:11px}.studio-nav .studio-link span{display:none}.brand{gap:10px}.brand-name{padding-left:10px;font-size:14px}}
@media(max-width:480px){.brand-name{max-width:7em}}

/* Rotated pages/shadows must not enlarge the scrollable zoom viewport.
   Otherwise scrollbars appear during every turn and move the centered book. */
#book-mount .stf__parent{overflow:hidden;isolation:isolate}

/* Page-effect editor and reader variants. */
.field-spacing{margin-top:18px!important}
.effect-select{width:100%;padding:13px 12px;border:1px solid #e4dddd;border-radius:10px;background:#faf8f8;color:var(--ink);font:inherit;cursor:pointer}
.effect-select:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
.reader-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:24px;align-items:start}
.reader-preview{min-width:0}
.reader-settings{border:1px solid #e8e1e1;background:#fff;border-radius:16px;padding:24px}
.reader-settings h2{font-family:var(--font);font-weight:600;font-size:22px;margin:0 0 6px}
.reader-settings>p{font-size:13px;color:var(--muted);line-height:1.7;margin:0 0 25px}
.reader-settings label{display:block;margin:18px 0 8px;font-size:13px;font-weight:600}
.reader-settings label span{font-weight:400;color:var(--muted)}
.reader-settings input{width:100%;min-width:0;border:1px solid #e4dddd;border-radius:8px;padding:12px;font:inherit;font-size:14px;color:var(--ink)}
.reader-settings .effect-description{min-height:65px;margin:14px 0 20px;color:#5c5556}
.reader-settings .settings-note{border-top:1px solid #eee7e7;padding-top:18px;font-size:11px;margin:0}
#reader-subtitle{font-size:14px;color:var(--muted);margin:4px 0;overflow-wrap:anywhere}
.reader-preview .toolbar{flex-wrap:wrap;justify-content:center;gap:12px}
#book-mount[data-effect=book] .stf__parent{border-radius:3px;box-shadow:0 5px 0 #4c3425,0 7px 0 #ad9581,0 14px 25px #23394d30}
#book-mount[data-effect=book] .flip-page[data-density=hard]{border:5px solid #614432}
#book-mount[data-effect=album] .stf__parent{box-shadow:0 6px 0 #3d3d3d,0 14px 26px #0003}
#book-mount[data-effect=album] .flip-page{background:#292929;padding:14px}
#book-mount[data-effect=notebook] .flip-page{padding-left:20px;background:#fffdf5}
#book-mount[data-effect=notebook] .flip-page:before{content:'';position:absolute;left:6px;top:0;bottom:0;width:12px;z-index:3;background:radial-gradient(ellipse at center,#52606b 0 23%,#d7dde1 25% 45%,transparent 48%) 0 10px/12px 27px repeat-y;pointer-events:none}
.deck-stage{width:100%;display:flex;align-items:center;justify-content:center;overflow:hidden;isolation:isolate}
.page-deck{position:relative;flex-shrink:0;perspective:1400px;touch-action:pan-y}
.deck-page{position:absolute;inset:0;background:white;box-shadow:0 10px 22px #172c3e40;transform-origin:center;backface-visibility:hidden}
.deck-page img{width:100%;height:100%;object-fit:contain;display:block;user-select:none;pointer-events:none}
.page-deck.is-ready .deck-page{transition:transform .6s cubic-bezier(.2,.65,.25,1),opacity .45s ease}
.page-deck--cards .deck-page{border:6px solid #fff;border-radius:6px;overflow:hidden}
.page-deck--coverflow .deck-page{cursor:pointer}
@media(max-width:1050px){.reader-layout{grid-template-columns:210px minmax(0,1fr);gap:16px}.reader-settings{padding:18px}}
@media(max-width:760px){.reader-layout{grid-template-columns:minmax(0,1fr)}.reader-settings{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px}.reader-settings h2,.reader-settings>p,.reader-settings label[for=page-effect],.reader-settings select{grid-column:1/-1}.reader-settings h2{font-size:20px}.reader-settings>p{margin:0}.reader-settings label{margin:8px 0 0}.reader-settings label[for=display-title]{grid-column:1;grid-row:3}.reader-settings label[for=display-subtitle]{grid-column:2;grid-row:3}.reader-settings input{grid-row:4}.reader-settings .effect-description{min-height:0;margin:4px 0}.reader-settings .settings-note{padding-top:10px}.reader:fullscreen .reader-settings{display:none}}
@media(prefers-reduced-motion:reduce){.page-deck.is-ready .deck-page{transition:none}}
.preview-mode .reader-settings,.preview-mode .studio-nav,.preview-mode .reader-actions a[href="index.html"]{display:none}
.preview-mode .reader-layout{grid-template-columns:minmax(0,1fr)}
.reader-lock{max-width:460px;margin:70px auto;background:#fff;border:1px solid #e8e1e1;padding:32px;border-radius:18px;text-align:center}
.reader-lock>span{font-size:34px}.reader-lock h1{font-size:28px}.reader-lock p{font-size:14px;line-height:1.7;color:var(--muted)}.reader-lock form{text-align:left;margin-top:25px}.reader-lock label{display:block;font-size:14px;margin-bottom:8px}.reader-lock input{width:100%;border:1px solid #e4dddd;border-radius:8px;padding:12px;font:inherit}.reader-lock #reader-unlock-error{color:#ab3434}