/* Base reset (the hosted preview added these for us; a standalone page needs them itself) */
html{color-scheme:light}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}

/* Layout concept: one-screen stage with a 620x450 board card on a polka-dot table, scaled by --s.
   Paper engineering: the lid is hinged on the back edge. Every pop-up is a parallel fold:
   it stays parallel to the lid, and a glue tab joins it to the lid (or to the piece behind it).
   The pop-ups stand up only as far as the page is opened. One directional light shades
   every face and casts projected shadows on the floor and the wall. */
:root{
  --bg:#CFE3F1; --dot:#E7F1F9; --ink:#2E2A5A; --muted:#5A5778;
  --note:#FFFDF6; --note-ink:#2E2A5A; --line:#CFE3F1;
  --pink:#FF8FB1; --yellow:#FFD25E; --blue:#8CCBF2; --mint:#8FDDBE; --plum:#3B2F4A;
  --kraft:#D8CFC0; --gold:#E9B949;
  --display:"Fredoka",ui-rounded,"Hiragino Maru Gothic ProN","Arial Rounded MT Bold",system-ui,sans-serif;
  --body:"Nunito",ui-rounded,system-ui,sans-serif;
  --hand:"Caveat","Segoe Print","Bradley Hand",cursive;
  --paper-tex:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n' x='0' y='0' width='100%25' height='100%25'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .2 0 0 0 0 .15 0 0 0 0 .3 0 0 0 .6 -.15'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){--bg:#1F2547;--dot:#2B3566;--ink:#F4EEFF;--muted:#C5BBDD;--line:#3A4378;color-scheme:dark}
}
:root[data-theme="dark"]{--bg:#1F2547;--dot:#2B3566;--ink:#F4EEFF;--muted:#C5BBDD;--line:#3A4378;color-scheme:dark}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;overflow-x:hidden;color:var(--ink);font-family:var(--body);font-weight:700;
  background-color:var(--bg);
  background-image:radial-gradient(var(--dot) 1.6px,transparent 2px);
  background-size:22px 22px;
  padding-block:10px 8px;
  padding-left:max(16px,env(safe-area-inset-left,0px));
  padding-right:max(16px,env(safe-area-inset-right,0px));
}
.app{height:100%;display:flex;flex-direction:column;gap:6px;min-height:0}

/* ---------- stage + camera ---------- */
.stage{position:relative;flex:1 1 auto;min-height:300px;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none;cursor:grab;-webkit-tap-highlight-color:transparent}
.stage.dragging{cursor:grabbing}
.fit{position:absolute;left:50%;top:50%;width:620px;height:450px;margin:-225px 0 0 -310px;transform-origin:50% 50%}
.persp{position:absolute;inset:0;perspective:1150px;perspective-origin:50% 40%}
.yaw{position:absolute;inset:0;transform-style:preserve-3d;transform:rotateZ(var(--yaw,0deg));transition:transform .9s cubic-bezier(.2,.7,.2,1)}
@media (hover:none){.is-open .yaw{animation:sway 9s ease-in-out infinite}}
@keyframes sway{0%,100%{transform:rotateZ(-5deg)}50%{transform:rotateZ(5deg)}}
.is-closed .persp{animation:idle 5s ease-in-out infinite}
@keyframes idle{0%,100%{transform:rotate(-.6deg) translateY(0)}50%{transform:rotate(.6deg) translateY(-4px)}}
.gshadow{position:absolute;left:2%;right:2%;top:56%;height:36%;background:radial-gradient(closest-side,rgba(40,25,70,.36),rgba(40,25,70,0));filter:blur(6px);pointer-events:none}
.scene{position:absolute;inset:0;transform-style:preserve-3d;will-change:transform;outline:none}
.scene:focus-visible{outline:3px solid var(--ink);outline-offset:8px;border-radius:14px}

/* ---------- the board card ---------- */
.base{position:absolute;inset:0;transform-style:preserve-3d}
.floor{position:absolute;inset:0;border-radius:8px;overflow:hidden;background:#F6EFE0;
  box-shadow:0 1px 0 #d6a63b,0 2px 0 #cf9f35,0 3px 0 #c6962f,0 4px 0 #bd8d2a,0 5px 0 #b48526}
.fshadows{position:absolute;inset:0;overflow:hidden;border-radius:8px;transform:translateZ(.3px);pointer-events:none}
.fs,.ws,.lidshadow{position:absolute;left:0;top:0;transform-origin:0 0;pointer-events:none}
.fs{opacity:.32}
.ws{opacity:0}
.fs svg,.ws svg{display:block;width:100%;height:100%;overflow:visible}
.fs svg{transform:scaleY(-1)}
.fs img,.ws img{display:block;width:100%;height:100%;object-fit:contain;filter:brightness(0) blur(2px)}
.fs img{transform:scaleY(-1)}
.lidshadow{width:620px;height:450px;background:linear-gradient(to bottom,rgba(35,22,60,.42),rgba(35,22,60,.3) 85%,rgba(35,22,60,0));opacity:0}
.spot{position:absolute;left:0;top:0;height:60px;border-radius:50%;background:radial-gradient(closest-side,rgba(255,226,120,.95),rgba(255,226,120,0));opacity:0;transition:opacity .3s}
.spot.on{opacity:1}
.floor-note{position:absolute;left:0;right:0;top:362px;display:flex;justify-content:center;align-items:center;gap:8px;font-family:var(--hand);font-size:38px;font-weight:700;color:#2E2A5A;line-height:1;pointer-events:none}
.floor-note span{white-space:nowrap}
.floor-note svg{width:34px;height:30px;flex:none}

.lid{position:absolute;inset:0;transform-style:preserve-3d;transform-origin:50% 0}
.face{position:absolute;inset:0;border-radius:8px;overflow:hidden;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.lid-cover{background:#FFC2D6}
.lid-inside{background:#BFE1F5;transform:rotateX(180deg)}
.lid-edge{position:absolute;left:4px;right:4px;top:100%;height:5px;background:#C9962F;transform-origin:50% 0;transform:rotateX(-90deg)}
.paper::after{content:"";position:absolute;inset:0;background:var(--paper-tex);opacity:.32;mix-blend-mode:multiply;pointer-events:none;border-radius:inherit}
.frame{position:absolute;inset:0;border:14px solid var(--gold);border-radius:inherit;pointer-events:none}
.frame::after{content:"";position:absolute;inset:3px;border:2px dashed rgba(46,42,90,.45);border-radius:4px}
.shade{position:absolute;inset:0;background:#1A1030;opacity:0;pointer-events:none}
.art,.art-img{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover}
.wshadows{position:absolute;inset:0;pointer-events:none}

.cover-title{position:absolute;left:0;right:0;top:96px;text-align:center;font-family:var(--display);line-height:1}
.cover-title b{font-size:66px;font-weight:600;color:#FFF8EC;-webkit-text-stroke:9px var(--plum);paint-order:stroke fill;text-shadow:0 5px 0 rgba(59,47,74,.25);letter-spacing:.01em}
.cover-sub{position:absolute;left:0;right:0;bottom:24px;text-align:center;font-family:var(--hand);font-size:30px;font-weight:700;color:var(--plum)}

/* ---------- the book: a stack of leaves hinged on the back edge ---------- */
.book{position:absolute;inset:0;transform-style:preserve-3d}
.leaf{position:absolute;inset:0;transform-style:preserve-3d;transform-origin:50% 0;pointer-events:none}
.leaf>.face{pointer-events:auto}   /* only a visible face can take a tap, never the empty box of a standing page */
.face.under{transform:rotateX(180deg)}
.face.floorface{background:#F6EFE0}
.leaf.backboard .face.top{box-shadow:0 1px 0 #d6a63b,0 2px 0 #cf9f35,0 3px 0 #c6962f,0 4px 0 #bd8d2a,0 5px 0 #b48526}
.leaf-edge{position:absolute;left:3px;right:3px;top:100%;height:3px;background:#E3D6BE;transform-origin:50% 0;transform:rotateX(-90deg)}
.leaf.cover .leaf-edge{background:#C9962F;height:5px}
.sp{position:absolute;inset:0;transform-style:preserve-3d;pointer-events:none}
.probe{position:absolute;inset:0;visibility:hidden;pointer-events:none}
#probeWall{transform-origin:50% 0;transform:rotateX(90deg)}
.flame{transition:opacity .25s}
.blown .flame{opacity:0}
.smoke{opacity:0}
.blown .smoke{animation:smoke 1.8s ease-out forwards}
@keyframes smoke{0%{opacity:.85;transform:translateY(4px)}100%{opacity:0;transform:translateY(-16px)}}

/* ---------- anniversary pages ---------- */
.lid-cover .cover-title{top:30px}
.cover-sprite{position:absolute;bottom:58px;width:92px;height:auto;filter:drop-shadow(2px 0 0 #fff) drop-shadow(-2px 0 0 #fff) drop-shadow(0 2px 0 #fff) drop-shadow(0 -2px 0 #fff) drop-shadow(0 4px 4px rgba(48,28,70,.3))}
.cover-sprite.l{left:96px}.cover-sprite.r{right:96px}
.wall-head{position:absolute;left:40px;right:40px;top:26px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:2px;color:#3B2F4A;pointer-events:none}
.wall-head b{font-family:var(--display);font-weight:600;font-size:36px;line-height:1.1;color:#FFF8EC;text-wrap:balance;
  text-shadow:3px 0 #3B2F4A,-3px 0 #3B2F4A,0 3px #3B2F4A,0 -3px #3B2F4A,2px 2px #3B2F4A,-2px 2px #3B2F4A,2px -2px #3B2F4A,-2px -2px #3B2F4A,0 6px 0 rgba(59,47,74,.25)}
.wall-head span{font-family:var(--hand);font-size:27px;font-weight:700;line-height:1.1}
.wall-head.on-night span{color:#FFF3C4}
.wphoto{position:absolute;margin:0;padding:7px 7px 6px;background:#FFFDF7;box-shadow:0 2px 0 rgba(59,47,74,.15),0 6px 10px -3px rgba(30,20,50,.35);transform:rotate(var(--r,0deg));cursor:default}
.is-open .wphoto{cursor:pointer;pointer-events:auto}
.wphoto::before{content:"";position:absolute;top:-8px;left:50%;width:46px;height:15px;margin-left:-23px;background:rgba(255,210,94,.85);transform:rotate(-4deg)}
.wphoto img{display:block;width:100%;aspect-ratio:1/0.82;object-fit:cover}
.wphoto figcaption{font-family:var(--hand);font-weight:700;font-size:16px;text-align:center;color:#3B2F4A;padding-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.letter-sheet{position:absolute;left:44px;top:100px;width:380px;height:300px;padding:18px 24px 10px;
  background:repeating-linear-gradient(to bottom,#FFFDF6 0 calc(1.25em - 1px),#D5E4F1 calc(1.25em - 1px) 1.25em);background-position:0 18px;
  color:#2E2A5A;font-family:var(--hand);font-weight:700;font-size:24px;line-height:1.25;overflow:hidden;
  box-shadow:0 2px 0 rgba(59,47,74,.12),0 6px 14px -4px rgba(40,25,70,.35);transform:rotate(-1.2deg)}
.letter-sheet::before{content:"";position:absolute;top:-8px;left:50%;width:74px;height:22px;margin-left:-37px;background:rgba(255,210,94,.85);transform:rotate(-3deg)}
.letter-sheet .ls-body,.wish-card .ls-body{height:100%;overflow:hidden;-webkit-mask-image:linear-gradient(#000 70%,transparent 97%);mask-image:linear-gradient(#000 70%,transparent 97%)}
.letter-sheet h3{margin:0 0 .2em;font-size:1.25em;line-height:1.1}
.letter-sheet p{margin:0 0 .3em}
.letter-sheet .sign{text-align:right}
.wish-card{position:absolute;left:44px;top:112px;width:340px;height:220px;padding:14px 18px 10px;background:rgba(255,253,246,.94);border-radius:6px;
  color:#2E2A5A;font-family:var(--hand);font-weight:700;font-size:24px;line-height:1.2;overflow:hidden;box-shadow:0 6px 14px -4px rgba(10,5,30,.5);transform:rotate(1deg)}
.letter-sheet,.wish-card{transition:transform .25s cubic-bezier(.3,1.5,.5,1),box-shadow .25s}
.is-open .letter-sheet,.is-open .wish-card{cursor:pointer;pointer-events:auto}
.is-open .letter-sheet:hover{transform:rotate(-.4deg) translateY(-4px) scale(1.015);box-shadow:0 2px 0 rgba(59,47,74,.12),0 12px 20px -6px rgba(40,25,70,.45)}
.is-open .wish-card:hover{transform:rotate(.3deg) translateY(-4px) scale(1.015)}
.letter-sheet:focus-visible,.wish-card:focus-visible{outline:3px dashed #3B2F4A;outline-offset:4px}
.letter-sheet::after,.wish-card::after{content:"tap to read";position:absolute;right:10px;bottom:6px;font:700 13px var(--body);color:#E86A9A;background:#FFF3F7;border-radius:99px;padding:2px 9px;opacity:0;transition:opacity .2s}
.is-open .letter-sheet::after,.is-open .wish-card::after{opacity:1}
.wish-card ol{margin:0;padding-left:1.3em}
.wish-card li{margin-bottom:.15em}
.wish-card li::marker{color:#E86A9A}
.pf img{object-position:50% 100%}
.note.photo{width:min(100%,560px);background:#FFFDF7;padding:16px 16px 12px;transform:rotate(-1deg)}
.note.photo #letterTitle{display:none}
.big-photo{display:block;width:100%;max-height:min(62vh,520px);object-fit:contain;background:#F3EEE6}
.note.photo .sign{text-align:center;margin-top:8px;font:700 1.7rem/1.2 var(--hand)}
.lid-cover .cover-sub{bottom:38px;font-size:26px;line-height:1.2}
/* lock and key on the cover */
.lockset{position:absolute;inset:0;pointer-events:none}
.strap{position:absolute;top:332px;height:26px;background:#F0679A;border-top:3px solid #3B2F4A;border-bottom:3px solid #3B2F4A}
.strap::after{content:"";position:absolute;inset:5px 0;border-top:2px dashed #FFE3EE;border-bottom:2px dashed #FFE3EE}
.strap.l{left:0;width:50%}.strap.r{right:0;width:50%}
.lock{position:absolute;left:255px;top:262px;width:110px;height:140px;transform-origin:50% 30%}
.lock svg{position:absolute;left:0;top:0;width:110px;height:140px;overflow:visible}
.shackle{transform-origin:33px 70px}
.lock .key{left:35px;width:40px;height:110px;top:58px;opacity:0;transform-origin:20px 30px}
.spark{position:absolute;left:55px;top:90px;width:13px;height:13px;border-radius:2px 50% 50% 50%;border:2px solid #3B2F4A;pointer-events:none}
.lock.shake{animation:lockShake .5s ease}
@keyframes lockShake{0%,100%{transform:rotate(0)}20%{transform:rotate(-9deg)}40%{transform:rotate(8deg)}60%{transform:rotate(-5deg)}80%{transform:rotate(3deg)}}
.unlock{display:flex;gap:8px 10px;flex-wrap:wrap;justify-content:center;align-items:center}
.unlock[hidden]{display:none}
.code-field{display:flex;align-items:center;gap:8px;background:var(--note);border:3px solid #3B2F4A;border-radius:999px;padding:4px 16px 4px 10px;min-height:46px;box-shadow:0 4px 0 rgba(59,47,74,.25)}
.code-field[hidden]{display:none}
.code-field svg{width:16px;height:44px;flex:none;transform:rotate(-30deg)}
.code-field input{border:0;background:transparent;font:600 1.15rem var(--display);color:var(--note-ink);width:9.6em;letter-spacing:.02em;outline:none;font-variant-numeric:tabular-nums}
.code-field input::placeholder{color:#A99BB3}
.code-field:focus-within{outline:3px solid var(--ink);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.flash{position:fixed;inset:0;z-index:40;background:#fff;pointer-events:none;opacity:0}
.flash.go{animation:flash .55s ease-out}
@keyframes flash{0%{opacity:0}12%{opacity:.95}100%{opacity:0}}
.note.strip{width:auto;background:transparent;box-shadow:none;padding:0;transform:none;display:grid;justify-items:center;gap:12px}
.note.strip::before{display:none}
.strip-big{width:min(240px,62vw,calc((100vh - 230px) / 3));min-width:120px;background:#FFFDF7;padding:10px 10px 12px;display:grid;gap:8px;justify-items:center;transform:rotate(-2deg);
  box-shadow:0 2px 0 rgba(59,47,74,.12),0 22px 36px -12px rgba(20,10,40,.55);animation:stripIn .6s cubic-bezier(.25,1.3,.45,1)}
.strip-big img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:#F3EEE6}
.strip-big b{font:700 clamp(1.15rem,5.4vw,1.6rem)/1 var(--hand);color:#3B2F4A;margin-top:2px;white-space:nowrap;text-align:center}
.strip-big small{font:800 .7rem/1 var(--body);letter-spacing:.12em;color:#B07A96;text-transform:uppercase}
.note.strip .sign{display:none}
@keyframes stripIn{from{opacity:0;transform:translateY(-60px) rotate(-6deg)}}
.wishes{margin:0;padding-left:1.4em;font:700 clamp(1.45rem,4.4vw,1.85rem)/42px var(--hand)}
.wishes li::marker{color:#E86A9A}

/* ---------- pop-up pieces ---------- */
.pc{position:absolute;left:0;top:0;transform-origin:0 0;transform-style:preserve-3d;pointer-events:none}
.pf{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden}
.pf svg{display:block;width:100%;height:100%;overflow:visible}
.pf img{display:block;width:100%;height:100%;object-fit:contain}
.pb svg,.pb img{transform:scaleY(-1)}
.pb img{filter:brightness(0) invert(.84) sepia(.25)}
.pfront{transform:rotateX(180deg)}
.pfront img{filter:drop-shadow(2px 0 0 #fff) drop-shadow(-2px 0 0 #fff) drop-shadow(0 2px 0 #fff) drop-shadow(0 -2px 0 #fff)}
.is-open .pc.clickable .pfront{pointer-events:auto;cursor:pointer}
.tab{position:absolute;left:0;top:0;transform-origin:0 0;background:var(--kraft);border-left:1px solid #BDB2A1;border-right:1px solid #BDB2A1;pointer-events:none}
.tab::before,.tab::after{content:"";position:absolute;left:0;right:0;height:1px;background:#A99D8B}
.tab::before{top:0}.tab::after{bottom:0}

.banner-text{position:absolute;left:12%;width:76%;top:8%;height:62%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--plum);font-family:var(--display);padding:0 8px}
.banner-text b{font-size:30px;white-space:nowrap;font-weight:600;line-height:1}
.banner-text span{font-family:var(--hand);font-size:21px;font-weight:700;line-height:1.05;margin-top:3px;max-width:100%}

/* ---------- UI ---------- */
.now-playing{position:absolute;top:8px;right:54px;z-index:6;height:34px;max-width:min(64vw,300px);display:flex;align-items:center;gap:8px;
  padding:0 13px;border:0;border-radius:999px;background:var(--note);color:var(--note-ink);box-shadow:0 3px 0 rgba(59,47,74,.22);
  font:800 .82rem/1 var(--body);cursor:pointer;overflow:hidden;transition:max-width .5s ease,padding .5s ease}
.now-playing b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:opacity .3s}
.now-playing b::before{content:"\266A  "}
.now-playing.mini{max-width:40px;padding:0 13px}
.now-playing.mini b{opacity:0}
.now-playing:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.eq{display:flex;align-items:flex-end;gap:2px;height:14px;flex:none}
.eq i{display:block;width:3px;height:6px;background:#E86A9A;border-radius:2px;animation:eq 1s ease-in-out infinite}
.eq i:nth-child(2){animation-delay:.25s}.eq i:nth-child(3){animation-delay:.5s}
.now-playing.paused .eq i{animation-play-state:paused;opacity:.45}
@keyframes eq{0%,100%{height:4px}50%{height:14px}}
.sound{position:absolute;top:4px;right:4px;z-index:6;width:42px;height:42px;border-radius:50%;border:0;padding:0;display:grid;place-items:center;
  background:var(--note);color:var(--note-ink);box-shadow:0 3px 0 rgba(59,47,74,.25);cursor:pointer}
.sound svg{width:22px;height:22px}
.sound .x{display:none}
.sound[aria-pressed="false"] .x{display:inline}
.hint{position:absolute;left:0;right:0;bottom:6px;text-align:center;font-size:.85rem;color:var(--muted);pointer-events:none;transition:opacity .3s}
.dock{display:flex;flex-direction:column;align-items:center;gap:6px;padding-bottom:2px;flex:none}
.msg{margin:0;min-height:42px;display:flex;align-items:center;justify-content:center;text-align:center;font-family:var(--hand);font-size:1.7rem;font-weight:700;line-height:1.05;max-width:min(92vw,520px);padding:2px 14px}
.msg.idle{color:var(--muted);font-size:1.45rem}
.msg.has{background:var(--note);color:var(--note-ink);border-radius:6px;padding:6px 18px 8px;transform:rotate(-1.2deg);box-shadow:0 3px 0 rgba(59,47,74,.18),0 8px 14px -6px rgba(40,25,70,.35);animation:notePop .35s cubic-bezier(.3,1.6,.5,1)}
@keyframes notePop{from{transform:translateY(10px) rotate(3deg) scale(.9);opacity:.2}to{transform:rotate(-1.2deg)}}
.people{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;min-height:44px;visibility:hidden;opacity:0;transform:translateY(10px);transition:opacity .35s,transform .35s,visibility 0s .35s}
.people[hidden]{display:none}
.people.show{visibility:visible;opacity:1;transform:none;transition:opacity .35s .1s,transform .35s .1s,visibility 0s}
.actions{display:flex;gap:8px 10px;flex-wrap:wrap;justify-content:center;min-height:48px;align-items:center}
.navrow{display:flex;justify-content:center;min-height:46px;align-items:center}
.nav{display:flex;align-items:center;gap:10px}
.nav[hidden]{display:flex!important;visibility:hidden}   /* keep the row's height so the book never jumps */
.btn.navbtn{width:46px;height:46px;padding:0;display:grid;place-items:center}
.navbtn svg{display:block;width:22px;height:22px}
.navbtn:disabled{opacity:.35;cursor:default;transform:none;box-shadow:0 2px 0 rgba(59,47,74,.2)}
.pager{display:flex;gap:7px;align-items:center;padding:0 6px}
.pager i{width:10px;height:10px;border-radius:50%;background:var(--muted);opacity:.35;transition:opacity .2s,transform .2s}
.pager i.on{opacity:1;transform:scale(1.25);background:var(--ink)}
.btn{font:600 1.05rem var(--display);letter-spacing:.01em;border:0;border-radius:999px;padding:.72rem 1.4rem;min-height:46px;background:var(--yellow);color:var(--plum);
  box-shadow:0 4px 0 rgba(59,47,74,.3);cursor:pointer;transition:transform .12s,box-shadow .12s}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(59,47,74,.3)}
.btn:focus-visible,.sound:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
.btn.ghost{background:var(--note);color:var(--note-ink)}
.btn.primary{background:var(--pink);font-size:1.15rem;padding-inline:1.9rem}
.person{background:var(--c,var(--yellow));padding:.6rem 1.2rem}
.person[aria-pressed="true"]{box-shadow:0 4px 0 rgba(59,47,74,.3),0 0 0 3px var(--ink);transform:translateY(-2px)}
.p0{--c:var(--blue)}.p1{--c:var(--pink)}.p2{--c:var(--yellow)}

.letter{position:fixed;inset:0;z-index:30;padding-block:max(12px,env(safe-area-inset-top,0px)) max(12px,env(safe-area-inset-bottom,0px));display:grid;place-items:center;padding-inline:12px;background:rgba(31,37,71,.28);animation:fade .25s ease}
.letter[hidden]{display:none}
@keyframes fade{from{opacity:0}}
.note{position:relative;width:min(100%,640px);max-height:100%;overflow:auto;padding:36px clamp(20px,5vw,44px) 26px;background:
  repeating-linear-gradient(to bottom,transparent 0 41px,var(--line) 41px 42px),var(--note);
  color:var(--note-ink);border-radius:4px;box-shadow:0 2px 0 rgba(59,47,74,.12),0 22px 36px -12px rgba(20,10,40,.55);
  transform:rotate(-1.4deg);animation:noteIn .5s cubic-bezier(.25,1.3,.45,1)}
@keyframes noteIn{from{opacity:0;transform:translateY(50px) rotate(5deg) scale(.9)}}
.note::before{content:"";position:absolute;top:-12px;left:50%;width:96px;height:26px;margin-left:-48px;background:rgba(255,210,94,.8);transform:rotate(2deg);box-shadow:0 1px 2px rgba(0,0,0,.15)}
.note h2{margin:0 0 8px;font:700 clamp(2rem,6vw,2.7rem)/1.1 var(--hand)}
.note p{margin:0 0 10px;font:700 clamp(1.5rem,4.6vw,1.95rem)/42px var(--hand)}
.note .sign{text-align:right;margin-top:12px}
.note .btn{display:block;margin:14px auto 0}
#confetti{position:fixed;inset:0;width:100%;height:100%;z-index:20;pointer-events:none}

@media (max-width:420px){.msg{font-size:1.45rem}.btn{font-size:1rem;padding-inline:1.1rem}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
}

/* Intro screen before the book */
.intro{position:fixed;inset:0;z-index:100;display:grid;place-content:center;justify-items:center;gap:40px;padding:24px 16px;background:#16142B;color:#F4EEFF;text-align:center;transition:opacity .8s ease}
.intro.out{opacity:0;pointer-events:none}
.intro-text{margin:0;max-width:30ch;font:700 clamp(1.25rem,4.6vw,1.9rem)/1.55 var(--body)}
.intro-text span{display:block;opacity:0;transform:translateY(8px);animation:introLine .9s ease forwards}
.intro-text b{font:700 1.35em/1 var(--hand);color:var(--pink);white-space:nowrap}
.intro-btn{position:relative;display:inline-flex;align-items:center;gap:10px;opacity:0;animation:introLine .7s ease forwards;
  font:800 1.05rem/1 var(--body);letter-spacing:.02em;color:#2E2A5A;background:linear-gradient(180deg,#FFE08A,#FFD25E);border:0;border-radius:999px;
  padding:15px 30px 15px 34px;cursor:pointer;-webkit-tap-highlight-color:transparent;box-shadow:0 5px 0 #C99A2E,0 10px 24px -6px rgba(255,210,94,.45);
  transition:transform .18s cubic-bezier(.3,1.6,.6,1),box-shadow .18s ease}
.intro-btn.ready,.intro-btn.go{opacity:1}
.intro-btn.ready{animation:introFloat 2.6s ease-in-out infinite}
.intro-btn::before{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:0 0 0 0 rgba(255,143,177,.55);pointer-events:none}
.intro-btn.ready::before{animation:introRing 2.6s ease-out infinite}
.intro-btn .ib-heart{display:inline-block;width:18px;height:18px;color:#E8467F;animation:introBeat 1.3s ease-in-out infinite}
.intro-btn .ib-heart svg{display:block;width:100%;height:100%}
.intro-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 8px 0 #C99A2E,0 14px 28px -6px rgba(255,210,94,.6)}
.intro-btn:hover .ib-heart{animation-duration:.7s}
.intro-btn:active{transform:translateY(3px) scale(.97);box-shadow:0 2px 0 #C99A2E,0 4px 10px -4px rgba(255,210,94,.4)}
.intro-btn:focus{outline:none}
.intro-btn:focus-visible{box-shadow:0 5px 0 #C99A2E,0 0 0 4px #16142B,0 0 0 7px var(--pink)}
.intro-btn.go{animation:introGo .5s cubic-bezier(.3,1.4,.6,1) forwards}
.intro-burst{position:fixed;width:14px;height:14px;margin:-7px 0 0 -7px;color:var(--pink);pointer-events:none}
@keyframes introFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes introRing{0%{box-shadow:0 0 0 0 rgba(255,143,177,.55)}70%,100%{box-shadow:0 0 0 18px rgba(255,143,177,0)}}
@keyframes introBeat{0%,60%,100%{transform:scale(1)}15%{transform:scale(1.28)}30%{transform:scale(.95)}45%{transform:scale(1.15)}}
@keyframes introGo{0%{transform:scale(1)}40%{transform:scale(.92)}100%{transform:scale(1.12);opacity:0}}
@keyframes introLine{to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){.intro-text span,.intro-btn,.intro-btn.ready,.intro-btn .ib-heart,.intro-btn.ready::before{animation:none;opacity:1;transform:none}.intro{transition:none}}
.intro-form{display:grid;justify-items:center;gap:14px;margin:0}
.intro-pass{opacity:0;animation:introLine .7s ease forwards;width:min(280px,78vw);font:700 1.1rem/1 var(--body);text-align:center;letter-spacing:.06em;color:#2E2A5A;background:#FFFDF6;border:3px solid #3B2F4A;border-radius:14px;padding:13px 16px;box-shadow:0 4px 0 #3B2F4A;transition:border-color .2s,box-shadow .2s}
.intro-pass::placeholder{color:#A39BB8;letter-spacing:0;font-weight:700}
.intro-pass:focus{outline:none;border-color:var(--pink);box-shadow:0 4px 0 #3B2F4A,0 0 0 4px rgba(255,143,177,.35)}
.intro-pass.bad{opacity:1;border-color:#FF6B8B;animation:introShake .45s ease}
.intro-err{min-height:1.3em;margin:-4px 0 0;font:700 1.15rem/1.3 var(--hand);color:#FFB3CB}
@keyframes introShake{0%,100%{transform:translateX(0)}20%{transform:translateX(-9px)}40%{transform:translateX(8px)}60%{transform:translateX(-6px)}80%{transform:translateX(4px)}}
@media (prefers-reduced-motion: reduce){.intro-pass{animation:none;opacity:1}.intro-pass.bad{animation:none}}