:root{color-scheme:light;--bg:oklch(97.5% .008 90);--surface:oklch(93% .012 90);--text:oklch(24% .016 155);--muted:oklch(47% .016 155);--accent:oklch(39% .07 157);--on-accent:oklch(98% .005 155);--line:oklch(80% .016 155);--error:oklch(45% .17 27);--focus:oklch(55% .14 260);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;font-size:16px;line-height:1.55;background:var(--bg);color:var(--text)}
:root[data-theme=dark]{color-scheme:dark;--bg:oklch(19% .008 155);--surface:oklch(25% .012 155);--text:oklch(93% .007 90);--muted:oklch(73% .014 155);--accent:oklch(78% .095 155);--on-accent:oklch(20% .022 155);--line:oklch(39% .012 155);--error:oklch(78% .12 27);--focus:oklch(78% .12 260)}
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var(--line);background:var(--bg);min-height:52px;font-size:1.1rem}#login-submit{width:100%;margin-top:.25rem}.error{color:var(--error);font-weight:550;font-size:.95rem}.error:empty{display:none}#preview{width:100%;max-height:55dvh;object-fit:contain;background:var(--surface);border-radius:8px}#review{margin-top:1.5rem}progress{appearance:none;width:100%;height:8px;border:0;border-radius:10px;background:var(--surface)}progress::-webkit-progress-bar{background:var(--surface);border-radius:10px}progress::-webkit-progress-value{background:var(--accent);border-radius:10px}progress::-moz-progress-bar{background:var(--accent)}#progress-text{font-size:.9rem;color:var(--muted)}.privacy{border-top:1px solid var(--line);margin-top:2.5rem;padding-top:1rem;color:var(--muted);font-size:.8rem}.privacy p:first-child{font-weight:650;color:var(--text);font-size:.9rem}.success-mark{display:flex;align-items:center;justify-content:center;border-radius:50%;width:48px;height:48px;background:var(--surface);color:var(--accent);font-size:1.6rem;margin-top:2rem}.gallery{max-width:1200px;margin:auto}.gallery-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem}.gallery-heading h1{max-width:none;margin-bottom:0}.gallery-heading button{flex-shrink:0}.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:1.5rem}.photo-tile{display:block;padding:0;position:relative;aspect-ratio:1;overflow:hidden;background:var(--surface);border:0;border-radius:6px}.photo-tile img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}.photo-tile:hover img{transform:scale(1.025)}.photo-tile:focus-visible{outline-offset:3px}.empty{padding:3rem 0}.empty h2{margin:0}.empty p{color:var(--muted);margin-bottom:1.75rem}.load-more{display:flex;margin:2rem auto}#photo-detail{max-width:950px;margin:auto}#detail-image{display:block;width:100%;max-height:72dvh;object-fit:contain;margin:1.5rem 0;background:var(--surface);border-radius:6px}#download{margin-top:.5rem}footer{width:100%;max-width:1280px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1.5rem max(1.25rem,env(safe-area-inset-right)) max(1.5rem,env(safe-area-inset-bottom)) max(1.25rem,env(safe-area-inset-left));font-size:.75rem;color:var(--muted)}.skip{position:fixed;top:-100px;left:1rem;padding:1rem;background:var(--bg);z-index:10}.skip:focus{top:1rem}[hidden]{display:none!important}
.photo-task-label{position:absolute;inset:auto 0 0;display:-webkit-box;overflow:hidden;padding:1.8rem .7rem .6rem;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.82));font-size:.75rem;font-weight:650;line-height:1.3;text-align:left;-webkit-box-orient:vertical;-webkit-line-clamp:2}.detail-task{margin:0 0 1rem;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.detail-task span{font-size:.75rem;font-weight:650;letter-spacing:.035em;color:var(--accent)}.detail-task p{margin:.25rem 0 0;font-size:1.05rem;font-weight:620}
.camera-view{margin-top:1.5rem}.camera-view h2{margin-top:0}.camera-frame{width:100%;aspect-ratio:4/3;max-height:min(70dvh,44rem);display:grid;place-items:center;overflow:hidden;border-radius:8px;background:var(--surface)}#camera-video{display:block;width:100%;height:100%;object-fit:contain;background:var(--surface)}.camera-controls{margin-bottom:0}
.challenge{margin:0 0 1.5rem}.challenge-trigger{position:relative;width:100%;min-height:88px;flex-direction:column;align-items:flex-start;gap:.1rem;padding:1.1rem 3.5rem 1.1rem 1.25rem;text-align:left;color:var(--text);background:var(--surface);border-color:var(--line)}.challenge-trigger:hover:not(:disabled){border-color:var(--accent)}.challenge-trigger strong{font-size:1.35rem;letter-spacing:-.02em}.challenge-kicker{font-size:.78rem;color:var(--accent);letter-spacing:.035em}.challenge-arrow{position:absolute;right:1.25rem;top:50%;translate:0 -50%;font-size:1.45rem;color:var(--accent)}.challenge-panel{padding:1.25rem;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.challenge-panel h2{margin:0 0 1rem}.challenge-text{margin:0;font-size:clamp(1.55rem,4vw,2.15rem);font-weight:730;letter-spacing:-.035em;line-height:1.17}.challenge-actions{margin:1.25rem 0 .35rem}.challenge-links{display:flex;justify-content:space-between;gap:.5rem}.challenge-links button{min-height:44px;font-size:.9rem}.choice-divider{display:flex;align-items:center;gap:.75rem;margin:1.5rem 0 .5rem;color:var(--muted);font-size:.78rem}.choice-divider::before,.choice-divider::after{content:"";height:1px;flex:1;background:var(--line)}.choice-divider span{white-space:nowrap}.active-task{margin:0 0 1rem;padding:1rem;border:1px solid var(--line);border-radius:10px;background:var(--surface)}.active-task span{font-size:.75rem;font-weight:650;letter-spacing:.035em;color:var(--accent)}.active-task p{margin:.25rem 0 0;font-weight:620}
@media(max-width:700px){h1{font-size:2.05rem}.topbar{flex-wrap:wrap;gap:.45rem;padding-top:.8rem;padding-bottom:.8rem}.brand{font-size:1.1rem}.brand svg{width:22px}.topbar nav{width:100%;justify-content:space-between}.topbar nav a{flex:1;padding:.6rem;text-align:center;font-size:.85rem}.theme-toggle{padding:.6rem}.theme-toggle span{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.gallery-heading{display:block}.gallery-heading button{margin-top:1.25rem}.photo-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}footer{align-items:flex-start}footer span{max-width:25ch}}
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@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.gallery-actions{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}.gallery-actions .button,.gallery-actions button{white-space:nowrap}.play-page{max-width:1240px;margin:auto}.play-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:1.5rem}.play-heading h1{max-width:24ch;margin:.45rem 0 .65rem}.back-link{display:inline-block;color:var(--muted);font-size:.9rem;margin-bottom:1.35rem;text-underline-offset:4px}.play-actions{display:flex;gap:.6rem;flex-wrap:wrap;justify-content:flex-end}.play-actions button{white-space:nowrap}.book-stage{position:relative;margin:1.7rem 0 1rem;padding:clamp(1rem,3vw,2.8rem);border-radius:24px;overflow:hidden;background:oklch(29% .07 330);box-shadow:0 18px 50px oklch(20% .06 330 / .2)}.book-stage::before,.book-stage::after{content:"";position:absolute;border-radius:50%;pointer-events:none}.book-stage::before{width:360px;height:360px;right:-140px;top:-190px;background:oklch(68% .16 35 / .38)}.book-stage::after{width:250px;height:250px;left:-120px;bottom:-150px;background:oklch(75% .13 185 / .3)}.book-spark{position:absolute;z-index:1;color:oklch(88% .15 92);font-size:1.6rem;line-height:1}.spark-one{top:9%;left:7%;transform:rotate(-12deg)}.spark-two{right:9%;bottom:11%;transform:rotate(20deg);color:oklch(82% .15 35)}.spark-three{top:26%;right:5%;font-size:1rem;color:oklch(80% .12 185)}.book-spread{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) 4.25rem minmax(0,1fr);max-width:1060px;min-height:min(68dvh,650px);margin:auto;border-radius:10px;background:oklch(93% .018 88);color:oklch(25% .025 330);box-shadow:0 22px 36px oklch(18% .05 330 / .32);overflow:hidden}.book-page{position:relative;min-width:0;padding:clamp(1rem,2.5vw,2rem);display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:.8rem;background:oklch(95% .02 88)}.book-page-left{border-radius:10px 0 0 10px}.book-page-right{border-radius:0 10px 10px 0;background:oklch(96% .012 82)}.book-page-label{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;font-weight:760;color:oklch(46% .12 330)}.book-gutter{display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:1.5rem .35rem;background:oklch(89% .025 88);border-left:1px solid oklch(40% .02 330 / .16);border-right:1px solid oklch(40% .02 330 / .16)}.book-sticker{display:inline-flex;align-items:center;justify-content:center;width:3rem;height:3rem;border-radius:50%;background:oklch(72% .17 35);color:oklch(25% .04 330);font-size:.67rem;font-weight:800;letter-spacing:.05em;transform:rotate(-8deg);box-shadow:0 3px 0 oklch(35% .08 35 / .3)}.book-page-number{font-variant-numeric:tabular-nums;font-size:.78rem;font-weight:760;color:oklch(45% .04 330)}.book-photo{position:relative;min-height:0;margin:0;padding:.45rem;background:oklch(99% .008 88);box-shadow:0 8px 14px oklch(25% .03 330 / .16);transform:rotate(-1.2deg);overflow:hidden}.book-photo-small{width:72%;justify-self:end;transform:rotate(2.2deg);align-self:end}.book-photo img{display:block;width:100%;height:100%;min-height:0;object-fit:cover;aspect-ratio:4/3;background:oklch(88% .025 88)}.book-photo-small img{aspect-ratio:3/2}.book-photo figcaption{display:none}.book-photo.has-task figcaption{display:block;position:absolute;left:.45rem;right:.45rem;bottom:.45rem;padding:.45rem .55rem;background:oklch(21% .035 330 / .86);color:oklch(97% .015 88);font-size:.72rem;line-height:1.25;font-weight:620;max-height:3.3em;overflow:hidden}.book-photo.has-task figcaption::before{content:"✦ ";color:oklch(79% .16 92)}.book-photo[hidden]{display:none}.book-stage.is-turning .book-spread{animation:book-turn .52s ease-out}.play-hint{margin:0;color:var(--muted);font-size:.82rem}.play-empty{max-width:32rem;margin:3rem auto;text-align:center}.play-empty p{margin-inline:auto}.play-page #play-status{margin:0}.play-page #play-error:empty{display:none}@keyframes book-turn{0%{opacity:.72;transform:perspective(1100px) rotateY(-5deg) scale(.988)}100%{opacity:1;transform:perspective(1100px) rotateY(0) scale(1)}}
@media(max-width:760px){.gallery-actions{width:100%;margin-top:1.25rem}.gallery-actions .button,.gallery-actions button{flex:1}.play-heading{display:block}.play-actions{justify-content:flex-start;margin-top:1.25rem}.book-stage{padding:.7rem;border-radius:16px}.book-spread{display:block;min-height:0;border-radius:8px}.book-gutter{display:none}.book-page{min-height:390px;border-radius:8px;padding:1.15rem}.book-page-right{margin-top:.7rem}.book-photo-large{min-height:260px}.book-photo-small{min-height:115px}}
@media(prefers-reduced-motion:reduce){.book-stage.is-turning .book-spread{animation:none}}