@font-face{font-family:"Vazirmatn";src:url("fonts/Vazirmatn-Variable.woff2") format("woff2");font-weight:100 900;font-display:swap}
:root{
  --pink:#f7a8c4;--pink-d:#e0648f;--rose:#c93d6e;--lav:#c9b6f2;--lav-d:#8b6fd6;--cream:#fff8f0;
  --ink:#5a3550;--ink-soft:#8a6380;--glass:rgba(255,255,255,.55);--glass-b:rgba(255,255,255,.75);
  --shadow:0 20px 50px -18px rgba(176,72,122,.35);
  --sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow-x:hidden}
body{font-family:"Vazirmatn",Tahoma,sans-serif;color:var(--ink);background:#fde9f1;
  -webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;line-height:1.9;
  min-height:100dvh}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
.hidden{display:none!important}

/* Background */
.bg{position:fixed;inset:0;z-index:-2;overflow:hidden;
  background:linear-gradient(160deg,#fff6f0 0%,#fde3ee 40%,#ece2fb 100%)}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.6;animation:drift 18s ease-in-out infinite alternate}
.b1{width:60vmax;height:60vmax;background:#ffc9dc;top:-20vmax;right:-15vmax}
.b2{width:50vmax;height:50vmax;background:#dccbff;bottom:-20vmax;left:-15vmax;animation-delay:-6s}
.b3{width:35vmax;height:35vmax;background:#fff0d6;top:40%;left:30%;animation-delay:-11s}
@keyframes drift{to{transform:translate(4vmax,-3vmax) scale(1.08)}}

.floaters{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.fl{position:absolute;bottom:-40px;animation:rise linear forwards;opacity:0;will-change:transform}
@keyframes rise{0%{transform:translate(0,0) rotate(0);opacity:0}10%{opacity:.85}
  100%{transform:translate(var(--dx),-110vh) rotate(var(--rot));opacity:0}}

/* Music */
.music-btn{position:fixed;z-index:20;top:calc(14px + var(--sat));left:14px;width:48px;height:48px;border-radius:50%;
  background:var(--glass);border:1px solid var(--glass-b);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);font-size:20px;display:grid;place-items:center;transition:transform .2s}
.music-btn:active{transform:scale(.92)}
.music-btn .mi-on{display:none}
.music-btn[aria-pressed="true"] .mi-on{display:inline;animation:bob 1.6s ease-in-out infinite}
.music-btn[aria-pressed="true"] .mi-off{display:none}
@keyframes bob{50%{transform:translateY(-3px)}}

/* Stages */
main{position:relative;min-height:100dvh}
.stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:calc(76px + var(--sat)) 18px calc(28px + var(--sab));
  opacity:0;visibility:hidden;transform:translateY(18px) scale(.98);
  transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1),visibility 0s .7s}
.stage.active{position:relative;min-height:100dvh;opacity:1;visibility:visible;transform:none;transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}

.glass{background:var(--glass);border:1px solid var(--glass-b);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--shadow)}
.card{width:100%;max-width:440px;border-radius:30px;padding:34px 24px 30px;text-align:center}
h1{font-size:clamp(26px,7vw,34px);font-weight:800;line-height:1.5;margin:6px 0 10px;
  background:linear-gradient(90deg,var(--rose),var(--lav-d));-webkit-background-clip:text;background-clip:text;color:transparent}
h2{font-size:clamp(21px,5.6vw,27px);font-weight:750;line-height:1.7;margin:8px 0 14px;color:var(--rose)}
.lead{font-size:17.5px;font-weight:500;margin-bottom:8px}
.soft{font-size:15px;color:var(--ink-soft);margin-bottom:26px}
.sign{margin:18px 0 24px;color:var(--ink-soft);font-size:15px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:54px;padding:12px 30px;
  border-radius:999px;font-weight:700;font-size:16.5px;line-height:1.5;transition:transform .2s,box-shadow .2s,background .2s}
.btn:active{transform:scale(.96)}
.btn:focus-visible,.envelope:focus-visible,.music-btn:focus-visible{outline:3px solid var(--lav-d);outline-offset:3px}
.primary{color:#fff;background:linear-gradient(135deg,#f58bb0,#d9608e 55%,#a67be0);
  box-shadow:0 12px 26px -10px rgba(217,96,142,.7)}
.primary:hover{box-shadow:0 16px 30px -10px rgba(217,96,142,.85)}
.soft-btn{background:rgba(255,255,255,.8);color:var(--lav-d);border:1.5px solid #dccbff}
.ghost{background:transparent;color:var(--ink-soft);border:1.5px solid rgba(138,99,128,.25);margin-top:6px}

/* Mini envelope on welcome */
.env-mini{position:relative;width:120px;height:82px;margin:4px auto 18px;animation:float 3.2s ease-in-out infinite}
.em-body{position:absolute;inset:0;border-radius:12px;background:linear-gradient(160deg,#fff,#ffe3ee);box-shadow:0 10px 24px -10px rgba(201,61,110,.45)}
.em-flap{position:absolute;inset:0 0 auto;height:55%;clip-path:polygon(0 0,100% 0,50% 100%);background:linear-gradient(#ffd0e1,#f7b2cb);border-radius:12px 12px 0 0}
.em-heart{position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);color:var(--rose);font-size:24px;animation:beat 1.4s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-10px)}}
@keyframes beat{0%,100%{scale:1}15%{scale:1.18}30%{scale:1}45%{scale:1.12}}

/* Story */
.story-card{min-height:320px;display:flex;flex-direction:column;justify-content:space-between;gap:20px}
.dots{display:flex;justify-content:center;gap:7px}
.dots i{width:8px;height:8px;border-radius:50%;background:rgba(201,61,110,.18);transition:all .4s}
.dots i.on{background:var(--pink-d);width:22px;border-radius:5px}
.story-line{font-size:clamp(19px,5.2vw,23px);font-weight:600;line-height:2;min-height:7.5em;display:flex;align-items:center;justify-content:center}
.caret::after{content:"";display:inline-block;width:2px;height:1.1em;background:var(--pink-d);margin-inline-start:3px;vertical-align:-.15em;animation:blink .9s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.row{display:flex;justify-content:center}
#storyNext{opacity:0;pointer-events:none;transition:opacity .4s}
#storyNext.show{opacity:1;pointer-events:auto}

/* Envelope */
.letter-wrap{width:100%;max-width:460px;display:flex;flex-direction:column;align-items:center;gap:22px}
.hint{font-weight:600;color:var(--ink-soft);animation:float 2.6s ease-in-out infinite}
.envelope{position:relative;width:min(320px,84vw);aspect-ratio:3/2;margin-top:60px;perspective:900px;
  transition:transform .6s,opacity .6s;animation:float 3.4s ease-in-out infinite}
.envelope>span{position:absolute;display:block}
.env-back{inset:0;border-radius:16px;background:linear-gradient(#f4a6c2,#eb8fb2)}
.paper{left:7%;right:7%;top:8%;height:84%;border-radius:10px;background:var(--cream);padding:16% 12% 0;
  box-shadow:0 4px 14px rgba(0,0,0,.08);transition:transform .9s cubic-bezier(.3,1.3,.5,1) .45s;z-index:1}
.pl{display:block;height:7px;border-radius:4px;background:#f6d6e2;margin-bottom:10px}
.pl.short{width:55%}
.env-front{inset:0;border-radius:16px;z-index:2;
  background:linear-gradient(160deg,#ffe0eb,#ffc6da);
  clip-path:polygon(0 0,50% 52%,100% 0,100% 100%,0 100%)}
.env-flap{left:0;right:0;top:0;height:58%;z-index:3;transform-origin:top;
  background:linear-gradient(#ffd3e3,#f9b6cd);clip-path:polygon(0 0,100% 0,50% 100%);border-radius:16px 16px 0 0;
  transition:transform .6s ease,z-index 0s .3s}
.seal{left:50%;top:50%;width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;z-index:4;display:grid!important;place-items:center;
  background:radial-gradient(circle at 35% 30%,#ff7aa6,#c93d6e);color:#fff;font-size:20px;box-shadow:0 6px 14px rgba(201,61,110,.5);transition:opacity .3s,transform .3s}
.envelope.open{animation:none}
.envelope.open .seal{opacity:0;transform:scale(.4)}
.envelope.open .env-flap{transform:rotateX(180deg);z-index:0}
.envelope.open .paper{transform:translateY(-55%)}
.envelope.gone{opacity:0;transform:scale(.85) translateY(30px)}
.letter{width:100%;border-radius:26px;padding:28px 24px;text-align:start;animation:pop .7s cubic-bezier(.2,.9,.3,1.2)}
.letter .to{font-weight:700;color:var(--rose);margin-bottom:10px}
.letter-text{font-size:17.5px;line-height:2.15;min-height:9em}
.letter .from{text-align:end;margin-top:14px;color:var(--ink-soft);font-weight:600}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.95)}}

/* Question */
.big-heart{font-size:72px;line-height:1.2;color:#e94f86;animation:beat 1.4s ease-in-out infinite;filter:drop-shadow(0 10px 18px rgba(233,79,134,.4))}
.choices{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.choices .btn{width:100%}
.flower{font-size:64px;animation:sway 3s ease-in-out infinite;transform-origin:bottom center}
@keyframes sway{50%{transform:rotate(6deg)}}

#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:30}
.noscript{position:fixed;inset:auto 0 0;padding:16px;text-align:center;background:#fff}

@media (min-width:768px){.card{padding:44px 40px 38px}.choices{flex-direction:row}.choices .btn{flex:1}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .floaters{display:none}
}