:root{
  --pink:#ff8fb1; --pink-d:#e8517f; --rose:#c2185b; --peach:#ffd8c2; --lav:#e6dcff;
  --ink:#5a2a41; --ink-soft:#8a5a70; --card:#fffafc; --shadow:0 10px 30px rgba(214,90,140,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Quicksand",system-ui,sans-serif;color:var(--ink);min-height:100vh;overflow-x:hidden;
  background:linear-gradient(165deg,#ffe3ec 0%,#ffeadd 38%,#f1e6ff 72%,#ffe4f0 100%) fixed;
  -webkit-tap-highlight-color:transparent;
}
body.locked{overflow:hidden;height:100vh}
button{font-family:inherit;cursor:pointer;border:0}

/* floating hearts */
.hearts-bg{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.fh{position:absolute;bottom:-40px;opacity:0;animation:floatUp linear forwards;will-change:transform,opacity}
@keyframes floatUp{
  0%{transform:translate(0,0) rotate(0) scale(.6);opacity:0}
  10%{opacity:.85}
  100%{transform:translate(var(--dx),-115vh) rotate(var(--rot)) scale(1.1);opacity:0}
}

/* ===== intro ===== */
.intro{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:24px;
  background:radial-gradient(120% 80% at 50% 0%,#ffd1e0 0%,#ffe6d8 45%,#eadfff 100%);
  transition:opacity .9s ease,visibility .9s, transform .9s ease}
.intro.gone{opacity:0;visibility:hidden;transform:scale(1.06)}
.intro-card{text-align:center;max-width:360px;width:100%;position:relative;z-index:2}
.intro-hey{font-family:"Caveat",cursive;font-size:30px;color:var(--pink-d);margin-top:26px}
.intro-title{font-size:30px;line-height:1.25;font-weight:700;margin:6px 0 8px;color:var(--ink)}
.intro-sub{color:var(--ink-soft);font-size:15px;margin-bottom:28px}
.btn-open{background:linear-gradient(135deg,#ff7aa5,#e8517f);color:#fff;font-size:19px;font-weight:700;
  padding:16px 40px;border-radius:999px;box-shadow:0 12px 28px rgba(232,81,127,.38);
  animation:breathe 2.2s ease-in-out infinite}
.btn-open:active{transform:scale(.96)}
.btn-open:focus-visible,.play-btn:focus-visible,.btn-yes:focus-visible,.btn-no:focus-visible,.mute:focus-visible,.btn-again:focus-visible,.reason:focus-visible{outline:3px solid #7b4dff;outline-offset:3px}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}
.intro-hint{margin-top:18px;font-size:13px;color:var(--ink-soft);opacity:.8}

/* envelope */
.envelope{position:relative;width:170px;height:118px;margin:0 auto;animation:bob 3s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-8px) rotate(2deg)}}
.env-back{position:absolute;inset:0;background:#f47aa0;border-radius:10px}
.env-letter{position:absolute;left:12px;right:12px;top:10px;height:90px;background:#fff;border-radius:6px;
  display:grid;place-items:center;font-size:30px;transition:transform .8s ease .2s;box-shadow:0 2px 6px rgba(0,0,0,.08)}
.env-front{position:absolute;inset:0;border-radius:10px;
  background:linear-gradient(to top right,#ff9fbe 50%,transparent 50.5%) left/50% 100% no-repeat,
             linear-gradient(to top left,#ffadc8 50%,transparent 50.5%) right/50% 100% no-repeat}
.env-flap{position:absolute;left:0;right:0;top:0;height:70px;transform-origin:top;transition:transform .6s ease;
  background:linear-gradient(to bottom right,#ff8db2 50%,transparent 50.5%) left/50% 100% no-repeat,
             linear-gradient(to bottom left,#ff8db2 50%,transparent 50.5%) right/50% 100% no-repeat;z-index:3}
.intro.opening .env-flap{transform:rotateX(180deg)}
.intro.opening .env-letter{transform:translateY(-46px)}

/* ===== main ===== */
.main{position:relative;z-index:1;max-width:520px;margin:0 auto;padding:0 18px 40px;opacity:0;transition:opacity 1s ease .3s}
.main.show{opacity:1}
.hero{min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:40px 0 30px}
.hero-small{font-family:"Caveat",cursive;font-size:28px;color:var(--pink-d)}
.hero-title{font-family:"Caveat",cursive;font-size:76px;line-height:1;color:var(--rose);margin:4px 0 6px;
  text-shadow:0 4px 18px rgba(232,81,127,.25)}
.hero-deva{font-family:"Tiro Devanagari Hindi",serif;font-size:21px;color:var(--ink-soft);margin-bottom:30px}
.scroll-hint{margin-top:34px;font-size:13px;color:var(--ink-soft);animation:nudge 1.8s ease-in-out infinite}
@keyframes nudge{0%,100%{transform:translateY(0);opacity:.6}50%{transform:translateY(6px);opacity:1}}

/* player */
.player{display:flex;align-items:center;gap:14px;width:100%;max-width:360px;background:rgba(255,255,255,.72);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.9);
  padding:14px 16px;border-radius:22px;box-shadow:var(--shadow);text-align:left}
.play-btn{position:relative;flex:0 0 58px;width:58px;height:58px;border-radius:50%;
  background:linear-gradient(135deg,#ff7aa5,#e8517f);display:grid;place-items:center;box-shadow:0 8px 18px rgba(232,81,127,.4)}
.play-btn svg{width:26px;height:26px;fill:#fff;position:relative;z-index:2}
.ic-pause{display:none}
.player.playing .ic-play{display:none}.player.playing .ic-pause{display:block}
.pulse{position:absolute;inset:0;border-radius:50%;background:#ff8fb1;z-index:1;opacity:0}
.player.playing .pulse{animation:pulse 1.6s ease-out infinite}
@keyframes pulse{0%{transform:scale(1);opacity:.55}100%{transform:scale(1.7);opacity:0}}
.player-body{flex:1;min-width:0}
.player-title{font-weight:700;font-size:15.5px;margin-bottom:6px}
.wave{display:flex;align-items:center;gap:3px;height:30px}
.wave i{flex:1;max-width:5px;border-radius:3px;background:#f6b7cb;height:var(--h);transition:background .2s}
.wave i.on{background:var(--pink-d)}
.player.playing .wave i{animation:wv 1s ease-in-out infinite alternate;animation-delay:var(--d)}
@keyframes wv{0%{transform:scaleY(.45)}100%{transform:scaleY(1.15)}}
.player-time{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-soft);margin-top:4px}

/* sections */
.section{padding:46px 0 10px}
.sec-title{font-family:"Caveat",cursive;font-size:40px;text-align:center;color:var(--rose);line-height:1.1}
.sec-sub{text-align:center;color:var(--ink-soft);font-size:14px;margin-top:4px}

/* reveal */
.reveal{opacity:0;transform:translateY(28px) scale(.98);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* letter */
.letter{position:relative;background:var(--card);border-radius:18px;padding:30px 24px 28px;box-shadow:var(--shadow);
  background-image:repeating-linear-gradient(transparent 0 31px,rgba(232,81,127,.10) 31px 32px);
  background-position:0 18px;border-left:4px solid #ffc2d4}
.letter p{font-size:16.5px;line-height:1.75;margin-bottom:12px}
.letter b{color:var(--rose)}
.letter-to{font-family:"Caveat",cursive;font-size:30px!important;color:var(--pink-d);margin-bottom:8px!important}
.letter-sign{font-family:"Caveat",cursive;font-size:28px!important;text-align:right;color:var(--rose);margin:8px 0 0!important}
.stamp{position:absolute;top:-16px;right:16px;font-size:34px;transform:rotate(12deg);filter:drop-shadow(0 4px 6px rgba(0,0,0,.12))}

/* shayari */
.shayari-list{display:flex;flex-direction:column;gap:18px;margin-top:22px}
.shayari{position:relative;background:rgba(255,255,255,.78);border-radius:20px;padding:24px 22px 20px 22px;
  box-shadow:var(--shadow);text-align:center;border:1px solid #fff}
.shayari:nth-child(even){background:rgba(246,238,255,.85)}
.shayari:nth-child(3n){background:rgba(255,239,229,.88)}
.shayari::before{content:"“";position:absolute;top:-6px;left:14px;font-family:Georgia,serif;font-size:64px;color:#ffb3c9;line-height:1}
.shayari p{font-family:"Caveat",cursive;font-size:23.5px;line-height:1.3;color:var(--ink)}
.shayari p span{display:block;text-wrap:balance}
.shayari p span+span{margin-top:6px}
.shayari .num{display:block;margin-top:10px;font-size:13px;color:var(--ink-soft);letter-spacing:.06em}

/* reasons (flip cards) */
.reasons{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
.reason{perspective:900px;background:none;height:168px;padding:0;text-align:center;color:var(--ink)}
.reason-in{position:relative;width:100%;height:100%;transition:transform .7s cubic-bezier(.3,.8,.3,1);transform-style:preserve-3d}
.reason.flipped .reason-in{transform:rotateY(180deg)}
.r-face{position:absolute;inset:0;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:14px;backface-visibility:hidden;-webkit-backface-visibility:hidden;box-shadow:var(--shadow)}
.r-front{background:linear-gradient(150deg,#fff 0%,#ffe6ee 100%)}
.r-front .em{font-size:40px;margin-bottom:8px}
.r-front .lb{font-weight:700;font-size:15px}
.r-front .tap{font-size:11px;color:var(--ink-soft);margin-top:6px}
.r-back{background:linear-gradient(150deg,#ff8fb1,#c86dd7);color:#fff;transform:rotateY(180deg);font-size:14.5px;line-height:1.45;font-weight:600}

/* promises */
.promises{list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:12px}
.promises li{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.8);border-radius:16px;padding:14px 16px;
  box-shadow:0 6px 18px rgba(214,90,140,.12);font-size:15.5px;line-height:1.5;font-weight:500}
.tick{flex:0 0 26px;height:26px;border-radius:50%;border:2px solid var(--pink);display:grid;place-items:center;color:#fff;font-size:14px;
  transition:background .4s ease .3s,transform .4s ease .3s;transform:scale(.8)}
.promises li.in .tick{background:var(--pink-d);border-color:var(--pink-d);transform:scale(1)}
.pinky{text-align:center;font-family:"Caveat",cursive;font-size:26px;color:var(--pink-d);margin-top:18px}

/* final */
.final{min-height:92vh;display:flex;align-items:center}
.final-card{width:100%;background:rgba(255,255,255,.82);border-radius:28px;padding:34px 22px 30px;text-align:center;box-shadow:var(--shadow);
  position:relative;overflow:visible}
.final-emoji{font-size:64px;animation:bob 2.6s ease-in-out infinite}
.final-title{font-family:"Caveat",cursive;font-size:46px;color:var(--rose);line-height:1.05;margin:6px 0}
.final-sub{color:var(--ink-soft);font-size:15px}
.choice{position:relative;height:180px;margin-top:22px;display:flex;justify-content:center;align-items:center;gap:18px}
.btn-yes{background:linear-gradient(135deg,#ff6f9c,#e0306a);color:#fff;font-size:20px;font-weight:700;padding:15px 34px;border-radius:999px;
  box-shadow:0 12px 26px rgba(224,48,106,.35);transition:transform .35s cubic-bezier(.3,1.6,.5,1);transform:scale(var(--ys,1));z-index:3}
.btn-no{background:#fff;color:var(--ink-soft);font-size:17px;font-weight:700;padding:13px 28px;border-radius:999px;border:2px solid #f3c6d5;
  transition:left .28s ease,top .28s ease,transform .28s ease,opacity .3s;z-index:4;white-space:nowrap}
.btn-no.free{position:absolute}
.no-msg{min-height:24px;margin-top:6px;font-weight:600;color:var(--pink-d);font-size:15px}

.foot{text-align:center;font-size:13px;color:var(--ink-soft);padding:30px 50px 24px}

/* thanks */
.thanks{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:22px;background:rgba(255,214,227,.55);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;visibility:hidden;transition:opacity .6s,visibility .6s}
.thanks.show{opacity:1;visibility:visible}
.thanks-card{background:#fff;border-radius:28px;padding:30px 24px;max-width:360px;text-align:center;box-shadow:0 20px 50px rgba(200,60,110,.3);
  transform:scale(.8);transition:transform .6s cubic-bezier(.3,1.5,.5,1)}
.thanks.show .thanks-card{transform:scale(1)}
.thanks-emoji{font-size:56px}
.thanks-card h3{font-family:"Caveat",cursive;font-size:44px;color:var(--rose);line-height:1.1;margin:6px 0}
.thanks-deva{font-family:"Tiro Devanagari Hindi",serif;font-size:22px;color:var(--pink-d);margin-bottom:10px}
.thanks-card p{font-size:15.5px;line-height:1.6}
.thanks-sign{font-family:"Caveat",cursive;font-size:28px!important;color:var(--rose);margin-top:12px;line-height:1.2!important}
.btn-again{margin-top:16px;background:#ffe3ec;color:var(--rose);font-weight:700;padding:10px 20px;border-radius:999px;font-size:14px}

#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:50}
.mute{position:fixed;right:14px;bottom:14px;z-index:30;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.85);
  box-shadow:var(--shadow);font-size:20px;display:none}
.mute.show{display:block}
.mute.off{opacity:.45;filter:grayscale(1)}

@media (min-width:600px){.hero-title{font-size:92px}.shayari p{font-size:28px}}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.2s!important}}