/* ===== Дизайны приглашения ===== */
:root{
  --grain:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 .09 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
[data-design="cherry"]{
  --bg:#F3D9D3; --bg-glow:#FFF0EC; --card:#FFFBF8; --ink:#3B0F1A; --muted:#8A5A63; --line:#EBCFC9;
  --accent:#C3122F; --accent-ink:#FFF4F2; --accent2:#F4A3B4;
  --env:#E8B1A7; --seal:#B5102B; --hand:#5A1424;
  --font-display:"Unbounded","Golos Text",sans-serif; --display-weight:800;
  --pattern:radial-gradient(rgba(195,18,47,.13) 1.2px,transparent 1.4px) 0 0/22px 22px;
}
[data-design="kraft"]{
  --bg:#E4D4B7; --bg-glow:#F6EDDC; --card:#FBF6EC; --ink:#2E2418; --muted:#7A6A55; --line:#E2D3B8;
  --accent:#8E2B1E; --accent-ink:#FBF6EC; --accent2:#2D4A78;
  --env:#C9A472; --seal:#8A2418; --hand:#2B2A4A;
  --font-display:"Lora",Georgia,serif; --display-weight:700;
  --pattern:repeating-linear-gradient(0deg,rgba(46,36,24,.05) 0 1px,transparent 1px 28px);
}
[data-design="night"]{
  --bg:#0E1530; --bg-glow:#26346E; --card:#18224A; --ink:#EEF0FF; --muted:#A3ABD6; --line:#2C3870;
  --accent:#F5C451; --accent-ink:#1A1A2E; --accent2:#8E9BFF;
  --env:#30428A; --seal:#E2A93A; --hand:#F7E3A8;
  --font-display:"Unbounded","Golos Text",sans-serif; --display-weight:700;
  --pattern:radial-gradient(rgba(255,255,255,.75) 1px,transparent 1.6px) 0 0/53px 53px,
            radial-gradient(rgba(245,196,81,.55) 1px,transparent 1.8px) 26px 31px/71px 71px;
}
[data-design="mint"]{
  --bg:#D8EEE3; --bg-glow:#F4FBF7; --card:#FFFFFF; --ink:#12352A; --muted:#5C7D72; --line:#CFE6DA;
  --accent:#E2577A; --accent-ink:#FFFFFF; --accent2:#5BB89A;
  --env:#F6C4D0; --seal:#D9466B; --hand:#7A2A44;
  --font-display:"Comfortaa","Golos Text",sans-serif; --display-weight:700;
  --pattern:radial-gradient(rgba(226,87,122,.22) 2px,transparent 2.6px) 0 0/30px 30px,
            radial-gradient(rgba(18,53,42,.08) 2px,transparent 2.6px) 15px 15px/30px 30px;
}
[data-design]{
  --env-side:color-mix(in srgb,var(--env) 90%,#000);
  --env-bottom:color-mix(in srgb,var(--env) 88%,#fff);
  --env-flap:color-mix(in srgb,var(--env) 94%,#000);
  --env-back:color-mix(in srgb,var(--env) 72%,#000);
  --font-hand:"Caveat","Marck Script",cursive;
}

.inv{
  position:relative;min-height:100%;display:grid;place-items:center;padding:32px 16px;overflow:hidden;
  background:radial-gradient(ellipse 60% 50% at 50% 45%,var(--bg-glow),transparent 70%),var(--pattern),var(--bg);
  color:var(--ink);font-family:"Golos Text",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;line-height:1.5;-webkit-tap-highlight-color:transparent;
}
.inv *,.inv *::before,.inv *::after{box-sizing:border-box}
.inv-screen{width:100%;display:grid;justify-items:center;animation:inv-in .5s ease both;position:relative;z-index:1}
@keyframes inv-in{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.inv-screen.from-letter{animation:inv-unfold .6s cubic-bezier(.2,.8,.2,1) both}
@keyframes inv-unfold{from{opacity:0;transform:translateY(40px) scale(.9) rotate(-1.5deg)}to{opacity:1;transform:none}}

/* лепестки на фоне */
.inv-petals{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.inv-petals span{position:absolute;top:-30px;color:var(--accent);opacity:.18;animation:inv-fall linear infinite}
@keyframes inv-fall{to{transform:translateY(calc(100vh + 60px)) rotate(240deg) translateX(40px)}}

/* ---- конверт ---- */
.env-scene{display:grid;justify-items:center;gap:22px;padding-top:44px}
.envelope{
  position:relative;width:min(500px,86vw);aspect-ratio:8/5;border:0;padding:0;background:none;
  cursor:pointer;perspective:1100px;font:inherit;color:inherit;
  animation:env-float 5s ease-in-out infinite;transition:transform .3s;
}
@keyframes env-float{50%{transform:translateY(-6px) rotate(-.4deg)}}
.envelope:hover{animation-play-state:paused}
.envelope:focus-visible{outline:3px solid var(--accent);outline-offset:10px;border-radius:10px}
.env-shadow{position:absolute;left:8%;right:8%;bottom:-18px;height:28px;border-radius:50%;
  background:rgba(0,0,0,.28);filter:blur(16px);z-index:-1}
.envelope .grain{background-image:var(--grain)}
.env-back{position:absolute;inset:0;border-radius:10px;background-color:var(--env-back)}
.env-letter{
  position:absolute;left:6%;right:6%;top:7%;height:86%;border-radius:6px;z-index:1;
  background-color:var(--card);transition:transform .8s cubic-bezier(.4,0,.2,1) .4s;
  display:grid;place-items:start center;padding-top:9%;
  font-family:var(--font-hand);font-size:clamp(22px,5vw,30px);color:var(--hand);
  box-shadow:0 -2px 6px rgba(0,0,0,.08);
}
.env-letter::after{content:"";position:absolute;left:12%;right:12%;top:38%;height:46%;
  background:repeating-linear-gradient(transparent 0 15px,var(--line) 15px 16px)}
.env-front{position:absolute;inset:0;z-index:2;filter:drop-shadow(0 1px 1px rgba(0,0,0,.12))}
.env-front i{position:absolute;inset:0;display:block;border-radius:10px}
.f-left{background-color:var(--env-side);clip-path:polygon(0 0,51% 55%,0 100%)}
.f-right{background-color:var(--env-side);clip-path:polygon(100% 0,49% 55%,100% 100%)}
.f-bottom{background-color:var(--env-bottom);clip-path:polygon(0 100%,50% 47%,100% 100%)}
.env-address{position:absolute;left:6%;bottom:9%;width:52%;z-index:3;text-align:left}
.env-address .k{font-size:12px;color:var(--ink);opacity:.55;letter-spacing:.02em}
.env-address .to{font-family:var(--font-hand);font-weight:700;font-size:clamp(30px,8vw,46px);line-height:1;color:var(--hand);
  border-bottom:1.5px solid color-mix(in srgb,var(--ink) 25%,transparent);padding-bottom:4px;margin-bottom:8px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.env-address .from{font-family:var(--font-hand);font-size:clamp(20px,5vw,26px);line-height:1;color:var(--hand);
  border-bottom:1.5px solid color-mix(in srgb,var(--ink) 25%,transparent);padding-bottom:4px}
.env-address .from small{font-family:"Golos Text",sans-serif;font-size:12px;opacity:.55;margin-right:6px;color:var(--ink)}
/* марка + штемпель */
.env-stamp{position:absolute;right:6%;bottom:10%;width:17%;aspect-ratio:4/5;z-index:3;transform:rotate(3deg);
  padding:5px;background:radial-gradient(circle,transparent 2.6px,var(--card) 3px) -4px -4px/8px 8px;
  filter:drop-shadow(0 2px 2px rgba(0,0,0,.18))}
.env-stamp div{width:100%;height:100%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;
  font-size:clamp(18px,4.5vw,28px);position:relative;overflow:hidden}
.env-stamp div::after{content:"Почта";position:absolute;bottom:3px;left:0;right:0;text-align:center;font-size:8px;opacity:.85;letter-spacing:.05em}
.env-postmark{position:absolute;right:2%;bottom:30%;width:25%;z-index:4;opacity:.55;color:var(--ink);transform:rotate(-12deg);pointer-events:none}
.env-flap{
  position:absolute;left:0;right:0;top:0;height:58%;z-index:5;transform-origin:top center;
  background-color:var(--env-flap);clip-path:polygon(0 0,100% 0,50% 100%);border-radius:10px 10px 0 0;
  transition:transform .6s cubic-bezier(.4,0,.2,1),z-index 0s linear .3s;
}
.env-flap::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.12))}
.env-seal{
  position:absolute;left:50%;top:58%;width:15%;aspect-ratio:76/72;transform:translate(-50%,-50%);z-index:6;
  border-radius:52% 48% 55% 45% / 50% 56% 44% 50%;
  background:radial-gradient(circle at 35% 30%,color-mix(in srgb,var(--seal) 65%,#fff) 0,var(--seal) 42%,color-mix(in srgb,var(--seal) 65%,#000) 100%);
  box-shadow:0 5px 10px rgba(0,0,0,.28),inset 0 -3px 6px rgba(0,0,0,.25);
  display:grid;place-items:center;transition:opacity .3s,transform .35s;
}
.env-seal::before{content:"";position:absolute;inset:16%;border-radius:50%;border:2px solid rgba(255,255,255,.16);
  box-shadow:inset 0 2px 4px rgba(0,0,0,.3)}
.env-seal span{font-size:clamp(15px,3.6vw,26px);color:color-mix(in srgb,var(--seal) 55%,#000);text-shadow:0 1px 0 rgba(255,255,255,.25);position:relative}
.env-photo{
  position:absolute;right:-6%;top:-26%;width:34%;margin:0;z-index:7;background:#fff;padding:6px 6px 26px;
  transform:rotate(7deg);box-shadow:0 12px 22px -8px rgba(0,0,0,.45);transition:transform .45s,opacity .45s;
}
.env-photo img{display:block;width:100%;aspect-ratio:1;object-fit:cover}
.env-photo::before{content:"";position:absolute;left:50%;top:-10px;width:58px;height:20px;margin-left:-29px;z-index:1;
  background:rgba(255,255,255,.6);transform:rotate(-4deg);box-shadow:0 1px 2px rgba(0,0,0,.12)}
.env-photo figcaption{position:absolute;left:0;right:0;bottom:3px;text-align:center;font-family:var(--font-hand);font-size:18px;color:#444}
.envelope.open{animation:none}
.envelope.open .env-seal{opacity:0;transform:translate(-50%,-50%) scale(.4) rotate(25deg)}
.envelope.open .env-flap{transform:rotateX(180deg);z-index:0;transition-delay:.15s,.45s}
.envelope.open .env-letter{transform:translateY(-52%)}
.envelope.open .env-photo{transform:rotate(16deg) translate(25%,-15%);opacity:0}
.env-hint{margin:0;font-size:15px;color:var(--muted);animation:inv-pulse 2.2s ease-in-out infinite}
@keyframes inv-pulse{50%{opacity:.45}}

/* ---- письмо ---- */
.card{position:relative;width:min(460px,100%);background-color:var(--card);background-image:var(--grain);
  border-radius:8px;box-shadow:0 2px 0 rgba(0,0,0,.04),0 40px 70px -38px rgba(0,0,0,.6)}
.card::before{content:"";display:block;height:10px;border-radius:8px 8px 0 0;
  background:repeating-linear-gradient(-45deg,var(--accent) 0 14px,transparent 14px 22px,var(--accent2) 22px 36px,transparent 36px 44px)}
.card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:10px;border-radius:0 0 8px 8px;
  background:repeating-linear-gradient(-45deg,var(--accent) 0 14px,transparent 14px 22px,var(--accent2) 22px 36px,transparent 36px 44px)}
.card-head{display:flex;justify-content:space-between;align-items:center;padding:18px 24px 0;gap:12px}
.card-head .to{font-family:var(--font-hand);font-size:28px;line-height:1;color:var(--accent)}
.card-head .mini-stamp{width:34px;height:40px;padding:3px;flex:none;transform:rotate(4deg);
  background:radial-gradient(circle,transparent 1.8px,var(--card) 2.1px) -3px -3px/6px 6px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.2))}
.card-head .mini-stamp i{display:grid;place-items:center;width:100%;height:100%;background:var(--accent);color:var(--accent-ink);font-style:normal;font-size:14px}
.card-body{padding:14px 24px 32px}
.inv h1{font-family:var(--font-display);font-weight:var(--display-weight);font-size:clamp(28px,7.5vw,38px);
  line-height:1.08;margin:6px 0 14px;text-wrap:balance}
.inv h2{font-family:var(--font-display);font-weight:var(--display-weight);font-size:19px;margin:22px 0 6px}
.inv p{margin:0 0 12px;white-space:pre-line}
.inv .muted{color:var(--muted)}
.inv .sign{font-family:var(--font-hand);font-size:28px;color:var(--hand);text-align:right;margin:4px 0 0}

.inv .btn{
  font:600 17px/1 "Golos Text",system-ui,sans-serif;border:0;border-radius:999px;padding:16px 30px;
  cursor:pointer;touch-action:manipulation;text-decoration:none;display:inline-block;text-align:center;
  transition:transform .25s cubic-bezier(.3,1.6,.5,1),box-shadow .2s;
}
.inv .btn:focus-visible,.btn-no.free:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.inv .btn-yes{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 18px -8px var(--accent)}
.inv .btn-no,.btn-no.free{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--line)}
.btn-no.free{position:fixed;z-index:1000;background:var(--card);border:0;border-radius:999px;padding:16px 30px;
  font:600 17px/1 "Golos Text",system-ui,sans-serif;transition:left .22s ease,top .22s ease;cursor:pointer;touch-action:none}
.inv .btn-wide{width:100%}
.inv-answers{display:flex;gap:14px;align-items:center;justify-content:center;min-height:130px;margin-top:6px}
.inv-hint{text-align:center;font-size:14px;color:var(--muted);min-height:21px;margin:4px 0 0!important}

.inv-rows{margin:8px 0 6px;padding:0;display:grid;gap:10px}
.inv-row{display:grid;grid-template-columns:40px 1fr;gap:12px;align-items:center;padding:12px 14px;border-radius:12px;
  background:color-mix(in srgb,var(--accent) 7%,transparent)}
.inv-row dt{width:40px;height:40px;border-radius:50%;background:var(--card);display:grid;place-items:center;font-size:19px;
  box-shadow:0 1px 3px rgba(0,0,0,.12)}
.inv-row dd{margin:0;line-height:1.3}
.inv-row dd small{display:block;font-size:13px;color:var(--muted)}
.inv-row dd b{font-weight:600;white-space:pre-line}
.inv-chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 14px}
.inv-chip{font:500 15px/1 "Golos Text",system-ui,sans-serif;padding:11px 15px;border-radius:999px;cursor:pointer;
  background:transparent;color:var(--ink);border:2px solid var(--line);transition:transform .15s}
.inv-chip:active{transform:scale(.95)}
.inv-chip[aria-pressed="true"]{background:var(--ink);color:var(--card);border-color:var(--ink)}
.inv-chip[aria-pressed="true"]::before{content:"♥ ";color:var(--accent)}
.inv-chip:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.inv input[type=text]{width:100%;font:16px "Golos Text",system-ui,sans-serif;padding:13px 15px;border-radius:14px;
  border:2px solid var(--line);background:transparent;color:var(--ink);margin:6px 0 18px}
.inv input[type=text]:focus{outline:none;border-color:var(--accent)}
.inv-cta{margin-top:22px}
.inv-count{text-align:center;margin:6px 0 16px}
.inv-count b{display:block;font-family:var(--font-display);font-weight:var(--display-weight);font-size:clamp(54px,16vw,76px);line-height:1;color:var(--accent)}
.inv-count span{font-family:var(--font-hand);font-size:26px;color:var(--hand)}
.inv-summary{background:color-mix(in srgb,var(--accent) 9%,transparent);border-radius:12px;padding:14px 16px;margin:14px 0 18px;white-space:pre-line;font-size:15px}
.inv-stack{display:grid;gap:10px}
.inv-status{text-align:center;font-size:14px;color:var(--muted);min-height:21px;margin-top:12px!important}
.inv-heart{display:inline-block;animation:inv-beat 1.4s ease-in-out infinite;color:var(--accent)}
@keyframes inv-beat{0%,100%{transform:scale(1)}15%{transform:scale(1.2)}30%{transform:scale(1)}}
.inv-burst{position:fixed;z-index:1001;pointer-events:none;line-height:1}

@media (prefers-reduced-motion:reduce){
  .inv-screen,.env-hint,.inv-heart,.envelope,.inv-petals span{animation:none}
  .env-flap,.env-letter,.env-photo,.env-seal,.inv .btn,.btn-no.free{transition:none}
  .inv-petals{display:none}
}

@media (min-width:760px){
  .envelope{width:min(540px,70vw)}
  .card{width:min(520px,100%)}
  .card-head{padding:22px 30px 0}
  .card-body{padding:16px 30px 36px}
  .card-head .to{font-size:32px}
}