:root{--accent:#d6457f;--ink:#43303b;--soft:#8c7683;--out:#8c7683;--line:#f3d2de;--bg1:#ffe3ee;--bg2:#f1e6ff;--bg3:#fff6e6;
font-family:Quicksand,system-ui,-apple-system,sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh;color:var(--ink);font-size:16px;line-height:1.5;overflow-x:hidden;
background:linear-gradient(165deg,var(--bg1),var(--bg2) 55%,var(--bg3)) fixed;
padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);transition:background .5s}
.hidden{display:none!important}
h1,h2,h3,.dear,.sign{font-family:"Gochi Hand","Segoe Script",cursive;font-weight:400;color:var(--accent);margin:0}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 14px;border-radius:10px;z-index:9}
.skip:focus{left:8px}

/* hero */
.hero{max-width:520px;margin:0 auto;padding:36px 16px 8px;text-align:center}
.big{font-size:3rem;line-height:1;animation:bob 3s ease-in-out infinite}
h1{font-size:clamp(2.2rem,10vw,3rem);line-height:1.1;margin-top:6px}
.sub{color:var(--out);margin:8px 0 18px}
.go{display:inline-flex;align-items:center;justify-content:center;width:auto;text-decoration:none;padding:0 34px}
.how{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;list-style:none;padding:0;margin:22px 0 0;counter-reset:s;font-size:.85rem;font-weight:700}
.how li{background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:99px;padding:4px 12px;color:var(--ink)}
.how li::before{counter-increment:s;content:counter(s) ". ";color:var(--accent)}

/* creator layout */
.make{max-width:460px;margin:0 auto;padding:24px 16px 10px}
.build{display:grid;gap:22px}
@media(min-width:900px){.make{max-width:960px}.build{grid-template-columns:1.1fr .9fr;align-items:start}.pvwrap{position:sticky;top:20px}}
.panel{background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:0 10px 30px rgba(180,110,150,.15);margin:0 0 14px;min-width:0}
label,legend{display:block;font-weight:700;margin:16px 0 6px;padding:0}
label:first-of-type{margin-top:0}
input,textarea,select{width:100%;font:inherit;font-size:16px;color:var(--ink);background:#fffafc;border:2px solid var(--line);border-radius:14px;padding:12px 14px}
textarea{min-height:130px;resize:vertical}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
fieldset{border:0;padding:0;margin:0}
.themes{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.themes.four{grid-template-columns:repeat(2,1fr)}
.themes button{min-height:64px;border:2px solid var(--line);background:#fffafc;border-radius:16px;font:inherit;font-weight:700;font-size:.82rem;color:var(--ink);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;transition:transform .15s,box-shadow .2s}
.themes button:active{transform:scale(.95)}
.themes button span{font-size:1.5rem;line-height:1}
.themes button[aria-pressed="true"]{border-color:var(--accent);background:#fff;transform:scale(1.04);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.btn{display:block;width:100%;min-height:50px;border-radius:16px;border:2px solid var(--line);background:#fff;color:var(--ink);font:inherit;font-weight:700;padding:0 18px;cursor:pointer;transition:transform .15s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(180,110,150,.22)}
.btn:active{transform:scale(.97)}
.btn.main{background:var(--accent);border-color:var(--accent);color:#fff;font-size:1.05rem;margin-top:10px}
.btn.ghost{border-color:transparent;background:transparent;color:var(--out);margin-top:8px;box-shadow:none}
.fb{display:inline-flex;align-items:center;justify-content:center;width:auto;text-decoration:none;padding:0 26px;margin-top:6px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0 0}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 8px}
.chips button{font:inherit;font-size:.8rem;min-height:40px;padding:0 12px;border-radius:99px;border:1.5px dashed var(--accent);background:#fff;color:var(--accent);font-weight:700;cursor:pointer}
.hint,.note{font-size:.85rem;color:var(--soft);margin:8px 0 0}
.err{color:#c0224f;font-weight:700;min-height:1.4em;margin:10px 0 0}
.notice{background:#fff3cd;border-radius:12px;padding:10px 14px;margin:0 0 14px;font-weight:700}
.ready{text-align:center;font-size:2.1rem;margin:8px 0 14px}
.pvt{font-size:1.5rem;color:var(--out);text-align:center;margin-bottom:10px}
.support{max-width:460px;margin:20px auto 0;padding:22px 16px 36px;text-align:center;color:var(--out)}
.support .sh{font-family:"Gochi Hand",cursive;font-size:1.5rem;color:var(--accent);margin:0}
.support p{margin:4px 0 10px}
.foot{font-size:.85rem;margin-top:22px!important}

/* QR card (on screen, print and PNG all share the same layout idea) */
.qrcard{background:#fff;border:3px dashed var(--accent);border-radius:26px;padding:22px 16px;text-align:center;max-width:340px;margin:0 auto 18px;box-shadow:0 10px 30px rgba(180,110,150,.15);animation:rise .6s cubic-bezier(.2,.9,.3,1)}
.qrcard .big{animation:none;font-size:2.6rem}
.qrcard h3{font-size:1.9rem;line-height:1.1;margin:6px 0 12px}
.qrbox{display:inline-block;background:#fff;padding:18px;border:1px solid var(--line);border-radius:14px}
.qrbox canvas,.qrbox img{display:block;max-width:100%;height:auto}
.scan{font-weight:700;letter-spacing:.2em;font-size:1.1rem;margin:10px 0 0}
.give{font-size:.9rem;color:var(--soft);margin:2px 0 0}
.cdeco{display:none;font-size:1.3rem;letter-spacing:.3em;margin:4px 0}
.qrcard.s-minimal{border:1px solid #ddd;border-radius:10px}
.qrcard.s-floral{border:3px solid var(--line)}.qrcard.s-floral .cdeco{display:block}
.qrcard.s-elegant{border:6px double var(--accent);border-radius:6px}.qrcard.s-elegant h3{font-family:Georgia,serif;font-size:1.6rem}

/* letter (used by the live preview and the receiver) */
.letter{background:#fffdfb;border-radius:26px;padding:26px 22px;text-align:left;box-shadow:0 16px 40px rgba(120,70,100,.2);border:1px solid var(--line);animation:rise .7s cubic-bezier(.2,.9,.3,1)}
.letter.small{animation:none;padding:20px 18px}
.deco{text-align:center;font-size:1.6rem;letter-spacing:.35em;margin:0 0 10px}
.badge{text-align:center;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--soft);margin:0 0 6px}
.dear{font-size:2rem;overflow-wrap:anywhere}
.body{font-size:1.15rem;white-space:pre-wrap;overflow-wrap:anywhere;margin:10px 0 0}
.sign{font-size:1.7rem;text-align:right;margin:16px 0 0;overflow-wrap:anywhere;opacity:0;transition:opacity .7s}
.sign.show{opacity:1}
.ghost{color:transparent;user-select:none}
#after{margin-top:18px}
.cta{border-color:var(--accent);color:var(--accent)}

/* receiver */
#receiver{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;position:relative;overflow:hidden}
#back{position:absolute;top:calc(8px + env(safe-area-inset-top));left:8px;width:auto;z-index:2}
#stage{position:relative;z-index:1;width:100%;max-width:440px;text-align:center}
#rTitle{font-size:clamp(2rem,9vw,2.5rem);line-height:1.15;margin-top:6px}
.env{position:relative;width:min(260px,70vw);aspect-ratio:3/2;margin:10px auto 24px;border-radius:14px;background:linear-gradient(160deg,color-mix(in srgb,var(--accent) 30%,#fff),color-mix(in srgb,var(--accent) 50%,#fff));box-shadow:0 14px 30px rgba(120,70,100,.25);animation:bob 2.6s ease-in-out infinite}
.env .flap{position:absolute;inset:0 0 auto 0;height:64%;background:color-mix(in srgb,var(--accent) 65%,#fff);clip-path:polygon(0 0,100% 0,50% 100%);transform-origin:top;transition:transform .7s ease;border-radius:14px 14px 0 0}
.env .seal{position:absolute;left:50%;top:60%;transform:translate(-50%,-50%);font-size:2.6rem;line-height:1;transition:opacity .3s}
.env.open{animation:none}.env.open .flap{transform:rotateX(180deg)}.env.open .seal{opacity:0}
.fall{position:fixed;top:-3rem;font-size:1.6rem;pointer-events:none;z-index:0;animation:fall linear forwards}
@keyframes bob{50%{transform:translateY(-10px) rotate(-4deg)}}
@keyframes rise{from{opacity:0;transform:translateY(36px) scale(.95)}}
@keyframes fall{to{transform:translateY(115vh) rotate(360deg)}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* printing: show ONLY the QR card */
@media print{
  body{background:#fff!important}
  body *{visibility:hidden}
  #card,#card *{visibility:visible}
  #card{position:absolute;left:50%;top:0;transform:translateX(-50%);width:90mm;margin:0;box-shadow:none;animation:none;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  @page{margin:12mm}
}