:root{
  --burgundy:#8f1f57;
  --pink:#e79ec1;
  --pink-soft:#f4cdde;
  --ink:#4a3b41;
  --paper:#efeaec;
  /* Slot geometry (percentages of the stage) — bleeds slightly under the frame */
  --slot-x:22.8%; --slot-y:20.0%; --slot-w:57.6%; --slot-h:58.6%;
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none !important}
html,body{margin:0;height:100%}
body{
  background:#ecebed fixed;
  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;
  color:var(--ink);
  min-height:100dvh;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
  user-select:none;
}

#app{width:100%;height:100dvh;display:flex;align-items:center;justify-content:center}

#stage{
  position:relative;
  aspect-ratio:1536 / 2048;
  width:min(100vw, calc(100dvh * 1536 / 2048));
  height:auto;
  box-shadow:0 30px 80px -30px rgba(80,30,55,.45);
  overflow:hidden;
  background:#f2edef;
}

#bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}

/* ---------- Hotspots (menu screens) ---------- */
#hotspots{position:absolute;inset:0}
.hot{
  position:absolute;cursor:pointer;border-radius:14px;
  background:transparent;border:0;padding:0;margin:0;-webkit-appearance:none;appearance:none;
  color:inherit;font:inherit;
  transition:transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s;
  transform:translateZ(0);
}
.hot:hover, .hot:focus-visible{
  transform:scale(1.025);
  box-shadow:0 0 0 2px rgba(143,31,87,.15), 0 14px 30px -12px rgba(143,31,87,.5);
  outline:none;
}
.hot:active{transform:scale(.99)}
.hot.inert{cursor:default}
.hot.inert:hover{transform:none;box-shadow:none}
.hot .tip{
  position:absolute;left:50%;bottom:12%;transform:translateX(-50%);
  background:rgba(143,31,87,.92);color:#fff;font-size:clamp(10px,2.6vw,15px);
  padding:.35em .8em;border-radius:999px;white-space:nowrap;opacity:0;
  transition:opacity .3s;pointer-events:none;font-style:italic;
}
.hot.inert:hover .tip{opacity:1}

/* debug */
#stage.debug .hot{background:rgba(143,31,87,.22);outline:2px dashed rgba(143,31,87,.8)}
#stage.debug #slot{outline:2px dashed #1e88e5}
#stage.debug .arrow{outline:2px dashed #2e7d32}
#stage.debug .th{outline:2px dashed #ef6c00}

/* ---------- Gallery ---------- */
#gallery{position:absolute;inset:0}
#slot{
  position:absolute;z-index:1;
  left:var(--slot-x);top:var(--slot-y);width:var(--slot-w);height:var(--slot-h);
  cursor:zoom-in;overflow:hidden;background:#fff;
}
/* washi tape overlays — sit ON TOP of the photo for a real scrapbook look */
#galTapes{position:absolute;inset:0;z-index:2;pointer-events:none}
.tape{position:absolute;height:auto;filter:drop-shadow(0 2px 3px rgba(120,60,80,.25))}
.tape-top{left:37.43%;top:16.46%;width:25.39%}
.tape-right{left:75.33%;top:47.51%;width:7.42%}
.tape-left{left:17.32%;top:64.36%;width:8.01%}
#slotStack{position:absolute;inset:0}
.photo{position:absolute;inset:0;will-change:transform,opacity,filter}
.photo .pbg{               /* blurred backdrop fills the slot, no empty bands */
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:blur(16px) saturate(1.08) brightness(1.02);transform:scale(1.2);
}
.photo .pfg{               /* the FULL photo, never cropped */
  position:absolute;inset:0;width:100%;height:100%;object-fit:contain;
  object-position:center;
}
/* organic transition */
@keyframes photoIn{
  0%{opacity:0;transform:scale(1.06) translateX(var(--dir,0));filter:blur(5px)}
  60%{opacity:1;filter:blur(0)}
  100%{opacity:1;transform:scale(1) translateX(0);filter:blur(0)}
}
@keyframes photoOut{
  0%{opacity:1;transform:scale(1) translateX(0)}
  100%{opacity:0;transform:scale(1.03) translateX(calc(var(--dir,0) * -1));filter:blur(4px)}
}
.photo.in{animation:photoIn .6s cubic-bezier(.22,.61,.24,1) both}
.photo.out{animation:photoOut .5s cubic-bezier(.4,0,.5,1) both}

.arrow{
  position:absolute;top:44.5%;height:11%;width:15.5%;z-index:3;
  border:0;background:transparent;cursor:pointer;padding:0;
  transition:transform .3s;
}
.arrow::after{content:"";position:absolute;inset:0}
#prev{left:2.5%}
#next{right:2.5%}
.arrow:hover{transform:scale(1.12)}
.arrow:active{transform:scale(.94)}
.arrow:disabled{opacity:.35;cursor:default;transform:none}

#counter{
  position:absolute;left:50%;top:80.4%;transform:translateX(-50%);z-index:3;
  font-size:clamp(11px,2.8vw,15px);letter-spacing:.06em;color:var(--burgundy);
  font-weight:600;opacity:.75;font-variant-numeric:tabular-nums;
}

#thumbs{position:absolute;inset:0;pointer-events:none;z-index:3}
.th{
  position:absolute;height:12.88%;width:12.11%;top:83.2%;
  overflow:hidden;cursor:pointer;pointer-events:auto;
  border-radius:3px;transition:transform .3s, box-shadow .3s, filter .3s;
  filter:saturate(.92) brightness(.98);
}
.th img{width:100%;height:100%;object-fit:cover;display:block}
.th:hover{transform:translateY(-4px)}
.th.active{
  transform:translateY(-5px) scale(1.04);filter:none;
  box-shadow:0 0 0 3px #fff, 0 0 0 5px var(--pink), 0 10px 18px -8px rgba(143,31,87,.6);
}

/* ---------- Home button ---------- */
#home{
  position:absolute;left:3.5%;top:2.6%;z-index:20;
  width:clamp(38px,9%,58px);aspect-ratio:1;border-radius:50%;
  border:0;cursor:pointer;color:var(--burgundy);
  background:rgba(255,255,255,.72);backdrop-filter:blur(4px);
  box-shadow:0 6px 16px -6px rgba(143,31,87,.55);
  display:grid;place-items:center;
  transition:transform .3s, background .3s;
}
#home:hover{transform:scale(1.08);background:#fff}
#home:active{transform:scale(.94)}

/* ---------- Lightbox ---------- */
#lightbox{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  background:rgba(38,22,30,.92);backdrop-filter:blur(6px);
  animation:fade .3s ease both;padding:4vmin;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
#lbImg{max-width:100%;max-height:100%;object-fit:contain;border-radius:6px;
  box-shadow:0 20px 60px rgba(0,0,0,.5);animation:lbpop .4s cubic-bezier(.2,.8,.2,1) both}
@keyframes lbpop{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}
#lbClose{position:absolute;top:max(12px,3vmin);right:max(12px,3vmin);
  width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.14);color:#fff;font-size:28px;line-height:1;
  display:grid;place-items:center;transition:background .2s}
#lbClose:hover{background:rgba(255,255,255,.28)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);
  width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.12);color:#fff;font-size:32px;line-height:1;
  display:grid;place-items:center;transition:background .2s}
.lb-nav:hover{background:rgba(255,255,255,.26)}
#lbPrev{left:max(10px,2vmin)}#lbNext{right:max(10px,2vmin)}

/* ---------- Loader ---------- */
#loader{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  z-index:5;pointer-events:none;opacity:0;transition:opacity .3s}
#loader.show{opacity:1}
.spin{width:40px;height:40px;border-radius:50%;
  border:4px solid rgba(143,31,87,.2);border-top-color:var(--burgundy);
  animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* screen enter animation */
@keyframes screenIn{from{opacity:0}to{opacity:1}}
#stage.switching #bg,#stage.switching #hotspots,#stage.switching #gallery{animation:screenIn .45s ease both}

@media (min-width:900px){
  .lb-nav{width:60px;height:60px;font-size:38px}
}