:root{
  --ube:#6a2ca0; --ube-deep:#6a2ca0; --plum:#3a1457; --lilac:#c7a2dd;
  --butter:#f6e8a6; --butter-deep:#b9a23c; --rose:#e0558a; --matcha:#9cb349; --matcha-deep:#4d5f1f;
  --bg:#f7f4fb; --paper:#fffdf2; --ink:#2b2233;
  --fs-body:1rem; --fs-h2:2.3rem; --pad:1.25rem;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#1b1424;--paper:#2b2233;--ink:#f4e7f7}}
:root[data-theme="dark"]{--bg:#1b1424;--paper:#2b2233;--ink:#f4e7f7}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:500 var(--fs-body)/1.65 'Quicksand',system-ui,sans-serif;overflow-x:hidden}
h1,h2{font-family:'Gochi Hand','Quicksand',cursive;font-weight:400;line-height:1.05;margin:0}
h2{font-size:var(--fs-h2);color:var(--h,var(--rose));margin-bottom:1rem;text-align:center}
.script{font-family:'Reenie Beanie','Gochi Hand',cursive}
.ico{width:1.6rem;height:1.6rem;fill:none;stroke:var(--rose);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ico.y{stroke:var(--butter-deep)}
.sec{padding:5rem var(--pad);position:relative;overflow:hidden}
.in{position:relative;z-index:1}
.dc{position:absolute;pointer-events:none;z-index:0}
.in{max-width:640px;margin:0 auto}

/* intro bunga */
#intro{position:fixed;inset:0;z-index:50;display:grid;place-items:center;background:var(--ube);text-align:center;cursor:pointer;overflow:hidden;--w:min(62vw,260px,30vh)}
#gift{position:relative;width:var(--w);margin:0 auto}
#gift svg{position:relative;width:100%;height:auto;display:block;overflow:visible}
#intro p{margin:1rem 0 0;font-size:1.8rem;color:#fffdf2}

/* jendela */
#stage{height:100svh;min-height:560px;position:relative;display:grid;place-items:center;overflow:hidden;background:#ffb7d2}
.win{position:relative;width:min(86vw,340px);aspect-ratio:3/4;border:14px solid var(--ube-deep);border-radius:140px 140px 10px 10px;background:linear-gradient(to bottom right,#b4cf9f 0%,#cdf09a 18%,#f9ffc4 50%,#c3f0c8 72%,#62b94f 100%);overflow:hidden;box-shadow:0 20px 50px rgba(106,44,160,.35)}
.scene{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:#fff;padding:1rem}
.scene h1{font-size:clamp(2.9rem,13.5vw,4.1rem);color:var(--plum);text-shadow:0 2px 10px rgba(255,255,255,.8)}
.moon{position:absolute;top:12%;right:14%;width:18%;aspect-ratio:1;border-radius:50%;background:var(--ube);box-shadow:0 0 30px rgba(106,44,160,.55)}
.star{position:absolute;width:6px;height:6px;background:#fff;border-radius:50%;box-shadow:0 0 5px rgba(77,95,31,.55)}
.curtain{position:absolute;top:0;bottom:0;width:52%;z-index:2;background:repeating-linear-gradient(90deg,var(--matcha) 0 14px,#b6c76a 14px 28px,var(--matcha) 28px 42px)}
.curtain.l{left:0;border-right:3px solid var(--matcha-deep)}
.curtain.r{right:0;border-left:3px solid var(--matcha-deep)}
.sill{position:absolute;bottom:-6px;z-index:4;width:min(98vw,380px);height:18px;border-radius:9px;background:var(--ube-deep)}
.hint{position:absolute;bottom:calc(1.5rem + env(safe-area-inset-bottom,0px));font-size:1.6rem;color:#6d8a2a}

/* amplop */
#env-sec{background:linear-gradient(180deg,var(--ube) 0%,var(--matcha) 100%);--h:#ffb7d2;color:#fff;min-height:100svh;display:grid;align-content:space-between;gap:2rem;position:relative}
#env-sec .to,#env-sec .from{font-size:2rem;color:#f4e7f7}
#env-sec .from{color:var(--plum)}
#env-sec h2{color:#ffb7d2;font-family:'Reenie Beanie',cursive;font-size:clamp(3rem,13vw,5rem);text-align:left;line-height:.95}
.env{position:relative;width:min(70vw,300px);aspect-ratio:3/2;margin:3rem 0 2rem auto;perspective:800px;cursor:pointer}
.env>*{position:absolute}
.env .back{inset:0;background:#e9d8b4;border-radius:5px}
.env .paper{left:8%;right:8%;top:8%;bottom:8%;background:var(--paper);color:var(--ink);border-radius:4px;display:grid;place-items:center;text-align:center;font-size:1.9rem;line-height:1;z-index:1;padding:.4rem}
.env .front{inset:0;background:#f6e9d2;z-index:2;clip-path:polygon(0 30%,50% 62%,100% 30%,100% 100%,0 100%);border-radius:5px}
.env .flap{inset:0;background:#ecd9b6;z-index:3;clip-path:polygon(0 0,100% 0,50% 62%);transform-origin:50% 0}
.env .seal{z-index:4;left:calc(50% - 14px);top:48%;width:28px;height:28px}
.tap{font-size:1.5rem;color:var(--butter);text-align:right;text-shadow:0 1px 3px rgba(58,20,87,.6)}

/* bingkai pita */
.frame{position:relative}
.frame>svg.bf{position:absolute;inset:-4% -4%;width:108%;height:108%;overflow:visible;pointer-events:none}
.bf{fill:none;stroke:var(--matcha);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}

/* kalender */
#cal{background:var(--ube);--h:#ffb7d2}
.cal{padding:2.5rem 1.4rem;margin-top:1rem}
.cal h3{margin:0 0 1rem;text-align:center;font:700 1.15rem 'Quicksand';letter-spacing:.04em;color:#fff}
.grid{display:grid;grid-template-columns:repeat(7,1fr);row-gap:.5rem;text-align:center}
.grid b{color:#fff;font-weight:700}
.grid span{position:relative;color:#fff;padding:.3rem 0}
.mk{position:absolute;left:50%;top:50%;width:190%;height:190%;transform:translate(-50%,-52%);overflow:visible}
.mk path{fill:none;stroke:var(--ube);stroke-width:1.8;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1}
.grid .on{color:var(--ube);font-weight:700}

/* surat */
.letter{background:var(--paper);padding:2.2rem 1.6rem;border-radius:6px;background-image:repeating-linear-gradient(transparent 0 2.45rem,rgba(246,232,166,.9) 2.45rem 2.5rem);box-shadow:0 10px 30px rgba(106,44,160,.15);transform:rotate(-1deg)}
.letter p{margin:0 0 2.5rem;font-size:1.9rem;line-height:2.5rem}
.letter .sign{text-align:right;color:var(--rose);margin:0}

/* galeri */
.gal{display:grid;gap:3rem;padding:1rem}
.ph{aspect-ratio:3/4;width:80%;margin:0 auto}
.ph:nth-child(odd){transform:rotate(-2deg)}
.ph:nth-child(even){transform:rotate(2deg)}
.ph .img{position:absolute;inset:5%;border-radius:6px;background:linear-gradient(135deg,#f4e7f7,#fff3b8) center/cover;display:grid;place-items:center;font-size:1.8rem;color:var(--lilac)}
.end{text-align:center;background:var(--matcha);--h:#c4286a}
#letter{background:var(--matcha);--h:#c4286a}
#gallery{background:var(--ube);--h:#ffb7d2}
.end h2{font-size:2.8rem}
.end p{font-size:2rem;color:var(--plum)}

#cake{background:var(--matcha);--h:#c4286a}
.cakewrap{display:grid;justify-items:center;gap:1rem;text-align:center}
#cakebtn{position:relative;width:min(80vw,320px);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;cursor:pointer;border-radius:24px;outline-offset:6px}
#cakebtn svg{width:100%;height:auto;overflow:visible;display:block}
.flame{transform-box:fill-box;transform-origin:50% 100%}
.bar{width:min(60vw,220px);height:10px;border-radius:5px;border:2px solid var(--plum);overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--plum)}
.wish{font-size:1.9rem;color:var(--plum);min-height:2.4rem;margin:0}
.burst{position:absolute;inset:0;pointer-events:none}
.burst i{position:absolute;left:50%;top:40%;width:8px;height:12px;border-radius:2px}
#bloom{position:fixed;inset:0;z-index:60;overflow:hidden;visibility:hidden;pointer-events:none}
#bloom.go{visibility:visible;pointer-events:auto}
.flower{position:absolute;left:var(--x);top:var(--y);translate:-50% -50%;width:var(--size);height:auto;opacity:0;pointer-events:none;user-select:none}
#bloom.go .flower{animation:bloom 1.3s var(--d) cubic-bezier(.2,1.3,.4,1) both}
@keyframes bloom{from{transform:scale(0) rotate(calc(var(--r)*-1));opacity:0}to{transform:scale(var(--s)) rotate(0deg);opacity:1}}
#bloom.open{pointer-events:none}
#bloom.open .flower{animation:leave 1s calc(var(--d)*.4) ease-in both}
@keyframes leave{from{transform:scale(var(--s)) rotate(0deg);opacity:1}to{transform:scale(calc(var(--s)*1.8)) rotate(var(--r));opacity:0}}
@media (prefers-reduced-motion:reduce){#bloom.go .flower{animation:none;opacity:1;transform:scale(var(--s))}#bloom.open .flower{animation:none;opacity:0;transition:opacity .4s}}
.cal h3,.cal .grid{position:relative;z-index:1}
.bf.bg{fill:#ee6a9b;stroke:none}
@media (min-width:768px){:root{--fs-body:1.08rem;--fs-h2:3rem;--pad:2rem}.win{width:400px}.in{max-width:720px}.gal{grid-template-columns:1fr 1fr}.ph{width:90%}}
@media (min-width:1024px){:root{--fs-h2:3.4rem}.win{width:460px}.in{max-width:900px}.gal{grid-template-columns:repeat(3,1fr)}.cal{max-width:560px;margin:1rem auto 0}.letter{max-width:640px;margin:0 auto}}
@media (min-width:1280px){:root{--fs-h2:3.8rem}.win{width:520px}.in{max-width:1040px}#env-sec .in{max-width:900px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* halaman terpisah */
.page{position:fixed!important;inset:0;z-index:1;overflow-x:hidden;overflow-y:auto;visibility:hidden;pointer-events:none;padding-bottom:6.5rem}
.page.active{visibility:visible;pointer-events:auto;z-index:2}
#stage.page{padding-bottom:0}
.page:not(#stage):not(#env-sec){display:flex;flex-direction:column}
.page>.in{margin:auto;width:100%}
.page.end{justify-content:center}
.next,.prev{position:fixed;bottom:calc(1.2rem + env(safe-area-inset-bottom,0px));z-index:5;font:400 1.5rem/1 'Gochi Hand',cursive;color:var(--plum);background:var(--butter);border:3px solid var(--plum);border-radius:999px;padding:.55rem 1.4rem;cursor:pointer;box-shadow:0 4px 0 var(--plum)}
.next{left:50%;translate:-50% 0}
.prev{left:1rem;padding:.55rem 1rem}
.next:active,.prev:active{box-shadow:0 1px 0 var(--plum)}
.ph .img{overflow:hidden}
.ph .img span{position:relative}
.ph .img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:6px}

/* tombol musik */
#musicbtn{position:fixed;top:calc(.9rem + env(safe-area-inset-top,0px));right:.9rem;z-index:70;width:44px;height:44px;display:grid;place-items:center;padding:0;border-radius:50%;background:var(--butter);border:3px solid var(--plum);box-shadow:0 3px 0 var(--plum);cursor:pointer;opacity:0;visibility:hidden;transition:opacity .4s}
#musicbtn.show{opacity:1;visibility:visible}
#musicbtn:active{box-shadow:0 1px 0 var(--plum);translate:0 2px}
#musicbtn svg{width:22px;height:22px;fill:none;stroke:var(--plum);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
#musicbtn .note{fill:var(--plum)}
#musicbtn .slash{opacity:0}
#musicbtn.off .slash{opacity:1}
#musicbtn.off .note{opacity:.55}