:root{--bg:#f4ece7;--app:#fffaf5;--ink:#30272b;--muted:#85777b;--soft:#a08b8e;--accent:#b2828b;--line:#eadedf;--card:#ffffff;--card2:#fffdf9;--btn:#30272b;--btnink:#ffffff;--btn2:#eee5e1;--btn2ink:#54484c;--pink:#e3a1ad;--g1:#ffffff;--g2:#fae9e8;--fg:#f8e5e4;--plate:#efe6e2;--string:#927e82;--err:#b34a5a}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#1b1618;--app:#241d20;--ink:#f3e9ea;--muted:#b9a9ad;--soft:#9a878b;--accent:#e0a5b0;--line:#3d3236;--card:#2d2428;--card2:#2d2428;--btn:#f3e9ea;--btnink:#241d20;--btn2:#3a2f33;--btn2ink:#e9dcde;--g1:#2a2226;--g2:#3a2a2e;--fg:#34262a;--plate:#463b3f;--string:#8a787c;--err:#f09aa8}}
:root[data-theme="dark"]{--bg:#1b1618;--app:#241d20;--ink:#f3e9ea;--muted:#b9a9ad;--soft:#9a878b;--accent:#e0a5b0;--line:#3d3236;--card:#2d2428;--card2:#2d2428;--btn:#f3e9ea;--btnink:#241d20;--btn2:#3a2f33;--btn2ink:#e9dcde;--g1:#2a2226;--g2:#3a2a2e;--fg:#34262a;--plate:#463b3f;--string:#8a787c;--err:#f09aa8}

*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
body.viewer .only-create,body:not(.viewer) .only-view{display:none!important}
.app{max-width:720px;min-height:100vh;margin:auto;background:var(--app);box-shadow:0 0 70px #5c403020;overflow-x:hidden}

/* top bar */
.bar{text-align:center;padding:20px 22px 14px;color:var(--soft);font-size:12px;font-weight:700;letter-spacing:.08em}
.prog{height:3px;max-width:220px;margin:10px auto 0;background:var(--line);border-radius:3px;overflow:hidden}
.prog i{display:block;height:100%;width:20%;background:var(--pink);transition:width .4s}
body.viewer .prog{display:none}

/* screens + type */
.screen{display:none;padding:15px 24px 45px}
.screen.on{display:block}
h1,h2,h3{font-family:"Playfair Display",Georgia,"Times New Roman",serif;text-align:center;font-weight:600}
h1{font-size:clamp(40px,10vw,70px);line-height:1.02;margin:14px 0}
h2{font-size:36px;margin:8px}
h3{font-size:24px;margin:4px 0 14px}
.sub{text-align:center;color:var(--muted);line-height:1.7;max-width:540px;margin:0 auto 28px}
.ey{text-align:center;color:var(--accent);font-size:13px;font-weight:700}
.tiny{text-align:center;letter-spacing:.14em;color:var(--accent);font-size:11px;font-weight:700;min-height:14px}

/* forms */
.field{margin:16px 0}
.field label,.lbl{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
.opt{color:var(--muted);font-weight:400}
input,textarea{width:100%;border:1px solid var(--line);border-radius:15px;padding:14px;background:var(--card);color:var(--ink);font:inherit}
input:focus,textarea:focus{outline:2px solid var(--pink);outline-offset:1px}
textarea{min-height:155px;resize:vertical}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.err{color:var(--err);font-size:13px;font-weight:600;min-height:18px;text-align:center}
.hint{color:var(--muted);font-size:12px;margin:8px 0 0}
.hint.err{text-align:left;min-height:0}
.vh{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden}
.note{text-align:center;color:var(--muted);font-size:13px;min-height:18px;margin-top:8px;line-height:1.5}

/* buttons */
.buttons{text-align:center;margin-top:24px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;border:0;background:var(--btn);color:var(--btnink);border-radius:999px;padding:14px 26px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none;transition:transform .15s}
.btn:active{transform:scale(.96)}
.btn:disabled{opacity:.6;cursor:wait}
.btn.light{background:var(--btn2);color:var(--btn2ink)}
.btn.sm{padding:9px 16px;font-size:13px}
button:focus-visible,a:focus-visible,.upload:focus-within,label.btn:focus-within{outline:2px solid var(--pink);outline-offset:3px}

/* avatar picker */
.avatarPick{display:flex;gap:16px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px}
.avatarPrev{flex:none;width:78px;height:78px;border-radius:50%;background:var(--btn2);display:flex;align-items:center;justify-content:center;font-size:34px;overflow:hidden}
.avatarPrev img{width:100%;height:100%;object-fit:cover}

/* cakes */
.cakes{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}
.cake{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:18px;padding:15px 6px;text-align:center;font:inherit;cursor:pointer}
.cake.sel{outline:2px solid var(--pink)}
.cake span{display:block;font-size:52px}
.cake b{display:block;font-size:13px}
.cake small{color:var(--muted)}

/* balloons */
.balloons{height:310px;position:relative;border-radius:25px;background:linear-gradient(var(--g1),var(--g2));overflow:hidden}
.balloon{position:absolute;width:70px;height:88px;border:0;padding:0;border-radius:50%;background:radial-gradient(circle at 30% 26%,#ffffff99 0 7px,transparent 8px),var(--c);box-shadow:inset -9px -12px 18px #0000001a;cursor:pointer;animation:sway 3s ease-in-out infinite;transition:transform .25s,opacity .25s}
.balloon:before{content:"";position:absolute;left:50%;bottom:-6px;margin-left:-6px;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:8px solid var(--c)}
.balloon:after{content:"";position:absolute;width:1px;height:110px;background:var(--string);left:50%;top:94px}
.balloon.p{animation:none;transform:scale(1.6);opacity:0;pointer-events:none}
@keyframes sway{50%{transform:translateY(-9px) rotate(3deg)}}
.reason{position:absolute;left:10px;right:10px;bottom:18px;text-align:center;font-family:"Playfair Display",Georgia,serif;font-size:22px;opacity:0;transform:translateY(8px);transition:.3s;pointer-events:none;text-shadow:0 1px 8px var(--app)}
.reason.show{opacity:1;transform:none}
details.edit{margin-top:14px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:12px 16px}
details.edit summary{cursor:pointer;font-weight:700;font-size:14px}
details.edit input{margin-top:8px;padding:10px 12px}

/* photos */
.upload{display:block;padding:24px;text-align:center;border:1.5px dashed var(--line);border-radius:20px;background:var(--card);cursor:pointer}
.upload .hint{display:block;margin-top:4px}
.photos{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin-top:14px}
.thumb{position:relative}
.thumb img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:13px;display:block}
.thumb button{position:absolute;top:-6px;right:-6px;width:24px;height:24px;border-radius:50%;border:0;background:var(--btn);color:var(--btnink);font-size:14px;line-height:1;cursor:pointer}

/* letter */
.letter{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:16px}
.letter textarea{border:0;padding:4px;min-height:170px}
.letter textarea:focus{outline:none}
.lrow{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.emos button{border:0;background:var(--btn2);border-radius:10px;padding:5px 8px;font-size:17px;cursor:pointer;margin-right:3px}
.count{font-size:11px;color:var(--muted)}

/* making / link */
.making{text-align:center;padding:40px 5px}
.linkBox{text-align:left}
.linkRow{display:flex;gap:8px;align-items:center}
.linkRow input{padding:11px 12px;font-size:14px}
.gift{display:inline-block;font-size:95px;margin:18px;border:0;background:none;cursor:pointer;animation:bob 1.7s infinite;line-height:1.1;padding:0}
.gift.shake{animation:wiggle .45s}
@keyframes bob{50%{transform:translateY(-12px)}}
@keyframes wiggle{25%{transform:rotate(-14deg) scale(1.06)}75%{transform:rotate(14deg) scale(1.12)}}
.hint2{color:var(--muted);font-size:14px;margin:0 0 18px}

/* final page */
#final.screen{padding:0}
.final{min-height:100vh;padding:35px 20px 90px;background:linear-gradient(var(--app),var(--fg))}
.final h1{font-size:clamp(45px,12vw,82px);animation:pop .8s cubic-bezier(.2,1.4,.4,1) both}
@keyframes pop{from{transform:scale(.6);opacity:0}}
.heroPhoto{position:relative;display:block;width:164px;height:164px;margin:18px auto 0;padding:7px;border:0;border-radius:50%;background:none;cursor:zoom-in;animation:pop .9s cubic-bezier(.2,1.4,.4,1) both}
.heroPhoto:before{content:"";position:absolute;inset:0;border-radius:50%;background:conic-gradient(#e8a2ad,#e8bf72,#c5a5ce,#a7c7c3,#e2a1bd,#e8a2ad);animation:spin 9s linear infinite}
.heroPhoto:after{content:"🎉";position:absolute;right:-8px;bottom:2px;font-size:36px}
.heroPhoto img{position:relative;display:block;width:100%;height:100%;border-radius:50%;object-fit:cover;border:5px solid var(--card2)}
@keyframes spin{to{transform:rotate(360deg)}}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:-12px 0 8px}
.chip{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 13px;font-size:13px;font-weight:600;color:var(--muted);font-variant-numeric:tabular-nums}
.card{max-width:570px;margin:25px auto;background:var(--card2);border-radius:25px;padding:25px;box-shadow:0 18px 55px #6d49491a}
.card h2{font-size:30px}
.card .sub{margin-bottom:14px}

/* cake art */
.cakeArt{position:relative;width:240px;height:210px;margin:10px auto 0}
.plate{position:absolute;left:10px;right:10px;bottom:0;height:22px;border-radius:50%;background:var(--plate);box-shadow:0 6px 14px #0000001a}
.tier{position:absolute;left:50%;transform:translateX(-50%);border-radius:14px 14px 10px 10px;background:linear-gradient(90deg,var(--base2),var(--base) 30%,var(--base) 70%,var(--base2))}
.tier:before{content:"";position:absolute;left:0;right:0;top:0;height:14px;border-radius:14px 14px 0 0;background:var(--frost)}
.tier:after{content:"";position:absolute;left:0;right:0;top:12px;height:12px;background:radial-gradient(circle at 11px 0,var(--frost) 7px,transparent 7.5px) 0 0/22px 12px repeat-x}
.t1{bottom:12px;width:200px;height:72px}
.t2{bottom:84px;width:146px;height:58px}
.candles{position:absolute;bottom:142px;left:50%;transform:translateX(-50%);display:flex;gap:6px;justify-content:center}
.candle{position:relative;width:8px;height:36px;border:0;padding:0;border-radius:3px;background:repeating-linear-gradient(135deg,#fff 0 5px,#e8a2ad 5px 10px);cursor:pointer}
.candle:after{content:"";position:absolute;left:-4px;right:-4px;top:-28px;bottom:0}
.flame{position:absolute;left:50%;bottom:100%;width:11px;height:18px;margin:0 0 2px -5.5px;border-radius:50% 50% 45% 45%/60% 60% 40% 40%;background:radial-gradient(circle at 50% 70%,#fff8c4 0 25%,#ffc244 45%,#ff7b2e 80%);box-shadow:0 0 14px 4px #ffb34766;transform-origin:50% 100%;animation:flick .18s ease-in-out infinite alternate;transition:opacity .3s,transform .3s}
@keyframes flick{to{transform:scaleY(1.12) rotate(2deg)}}
.candle.out .flame{opacity:0;transform:scale(.2);animation:none}
.smoke{position:absolute;left:50%;bottom:100%;width:8px;height:8px;margin-left:-4px;border-radius:50%;background:#bfb3b6;opacity:0;pointer-events:none}
.candle.out .smoke{animation:smoke 1.3s ease-out forwards}
@keyframes smoke{0%{opacity:.7;transform:translateY(0) scale(.6)}100%{opacity:0;transform:translateY(-44px) scale(2.6)}}
.cakeName{text-align:center;color:var(--muted);font-size:13px;margin-top:10px}
.wishMsg{text-align:center;line-height:1.7;min-height:27px}
.pulse{animation:pulse 1.2s ease-in-out 3}
@keyframes pulse{50%{transform:scale(1.07)}}

/* memories, letter, wish */
.mem{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory}
.mem img{width:150px;height:150px;object-fit:cover;border-radius:16px;flex:none;cursor:zoom-in;scroll-snap-align:start}
.opening{animation:unfold .6s ease-out}
@keyframes unfold{from{transform:rotateX(70deg) translateY(-20px);opacity:0}}
.full{white-space:pre-wrap;line-height:1.85;color:var(--muted);min-height:60px;cursor:pointer}
.sign{text-align:right;font-family:"Playfair Display",Georgia,serif;font-size:20px;margin-top:14px;opacity:0;transition:opacity .8s}
.sign.show{opacity:1}
.heart{text-align:center;font-size:30px}
.jar{position:relative}
.jar textarea{min-height:80px}
.fly{position:absolute;left:50%;top:10px;transform:translateX(-50%);white-space:nowrap;font-family:"Playfair Display",Georgia,serif;font-size:18px;pointer-events:none;animation:flyup 2.2s ease-in forwards}
@keyframes flyup{to{transform:translate(-50%,-240px) scale(.5);opacity:0}}

/* effects */
.tapheart{position:fixed;pointer-events:none;font-size:26px;transform:translate(-50%,-50%);animation:rise 1.2s ease-out forwards;z-index:30}
@keyframes rise{to{transform:translate(-50%,-170%) scale(1.4);opacity:0}}
.shake{animation:shake .4s}
@keyframes shake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:50}
.fab{position:fixed;right:18px;bottom:18px;width:54px;height:54px;border-radius:50%;border:0;background:var(--btn);color:var(--btnink);font-size:22px;box-shadow:0 8px 24px #0003;z-index:20;cursor:pointer;display:none}
body.at-final .fab{display:block}
.fab[aria-pressed="true"]{animation:bob 1.2s infinite}

/* lightbox */
.lb{position:fixed;inset:0;background:#000000dd;display:flex;align-items:center;justify-content:center;z-index:40;padding:20px}
.lb img{max-width:92vw;max-height:80vh;border-radius:16px}
.lb button{position:absolute;border:0;background:#ffffff22;color:#fff;width:46px;height:46px;border-radius:50%;font-size:22px;cursor:pointer}
.lb .x{top:16px;right:16px}
.lb .pv{left:12px;top:50%;margin-top:-23px}
.lb .nx{right:12px;top:50%;margin-top:-23px}

@media(max-width:520px){
  .app{box-shadow:none}
  .two{grid-template-columns:1fr}
  .screen{padding:12px 18px 40px}
  .photos{grid-template-columns:repeat(3,1fr)}
  h2{font-size:30px}
  .linkRow{flex-direction:column;align-items:stretch}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}