*{box-sizing:border-box}
[hidden]{display:none!important}

:root{--gold:#f7c82a;--ink:#fff8e7}

html,body{margin:0}

body{
  min-height:100vh;
  color:var(--ink);
  font-family:Georgia,'Times New Roman',serif;
  background:linear-gradient(180deg,#07122b 0%,#14214f 45%,#2a2a6b 75%,#3b3a7c 100%) fixed;
  overflow-x:hidden;
}

body::before{
  content:'';
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(1.2px 1.2px at 20px 30px,#fff,transparent),
    radial-gradient(1.6px 1.6px at 90px 80px,#fffbe0,transparent),
    radial-gradient(1px 1px at 160px 120px,#fff,transparent),
    radial-gradient(1.4px 1.4px at 60px 170px,#dfe9ff,transparent),
    radial-gradient(1px 1px at 120px 20px,#fff,transparent);
  background-size:200px 200px,260px 260px,180px 180px,310px 310px,240px 240px;
  opacity:.8;
}

.defs{position:absolute;width:0;height:0;overflow:hidden}

#snow,#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none}
#snow{z-index:3}
#fx{z-index:20}

.moon{
  position:fixed;left:5%;top:120px;width:70px;height:70px;border-radius:50%;z-index:1;
  background:radial-gradient(circle at 35% 35%,#fffef2,#f4eec8 60%,#d9d2a4);
  box-shadow:0 0 40px 10px rgba(255,248,200,.35);
}

/* Fairy lights */
#lights{position:fixed;top:0;left:0;width:100%;height:96px;z-index:5;pointer-events:none}
.wire{stroke:#0a2a18;stroke-width:2.5;fill:none}
.cap{fill:#1f3d2b}
.bulb{
  fill:var(--c);
  filter:drop-shadow(0 0 5px var(--c)) drop-shadow(0 0 10px var(--c));
  animation:twinkle 1.8s ease-in-out infinite;
  animation-delay:var(--d);
}
@keyframes twinkle{0%,100%{opacity:1}50%{opacity:.3}}

/* Ground scenery */
.ground{position:fixed;left:0;right:0;bottom:0;height:260px;z-index:2;pointer-events:none}
.hills{position:absolute;bottom:0;left:0;width:100%;height:120px}
.deco{position:absolute;height:auto}
.tree{aspect-ratio:120/180}
.snowman{aspect-ratio:120/200;left:20%;bottom:34px;width:clamp(60px,8vw,115px)}
.santa{aspect-ratio:160/220;right:18%;bottom:30px;width:clamp(80px,11vw,150px)}
.t1{left:1%;bottom:30px;width:clamp(70px,11vw,155px)}
.t2{left:10%;bottom:48px;width:clamp(50px,7vw,100px)}
.t3{right:7%;bottom:44px;width:clamp(55px,8vw,115px)}
.t4{right:-1%;bottom:28px;width:clamp(70px,11vw,155px)}
.tl{animation:twinkle 1.4s ease-in-out infinite;filter:drop-shadow(0 0 3px currentColor)}
.tl.a{animation-delay:0s}.tl.b{animation-delay:.5s}.tl.c{animation-delay:.95s}
.star{animation:starGlow 2s ease-in-out infinite;filter:drop-shadow(0 0 6px #ffd34d)}
@keyframes starGlow{50%{opacity:.65}}
.arm-wave{transform-box:fill-box;transform-origin:0% 100%;animation:wave 1.3s ease-in-out infinite}
@keyframes wave{0%,100%{transform:rotate(-8deg)}50%{transform:rotate(14deg)}}

.hushfade{
  position:fixed;inset:0;z-index:6;pointer-events:none;opacity:0;transition:opacity 1s;
  background:radial-gradient(circle at 50% 38%,transparent 18%,rgba(0,0,12,.88) 75%);
}
body.hush .hushfade{opacity:1}

/* Layout */
main{position:relative;z-index:10;max-width:760px;margin:0 auto;padding:96px 16px 150px;text-align:center}

h1{
  margin:0;
  font-family:'Segoe Script','Brush Script MT','Lucida Handwriting',cursive;
  font-size:clamp(2.1rem,6.5vw,3.7rem);font-weight:700;line-height:1.15;
  background:linear-gradient(180deg,#fff3b0,#f7c82a 55%,#b8860b);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 2px 10px rgba(247,200,42,.45));
}
.tagline{margin:.3rem 0 0;font-style:italic;color:#e8dfc0}

/* Sack */
.sack-area{position:relative;width:min(290px,68vw);aspect-ratio:300/340;margin:34px auto 0}
.sack-wrap{position:absolute;inset:0;transform-origin:50% 92%;animation:idle 4s ease-in-out infinite}
.sack-svg{width:100%;height:100%;display:block;overflow:visible;filter:drop-shadow(0 0 16px rgba(247,200,42,.45))}
@keyframes idle{0%,100%{transform:rotate(-1.2deg)}50%{transform:rotate(1.2deg)}}

.glow{
  position:absolute;inset:-35%;pointer-events:none;opacity:.3;
  background:radial-gradient(circle,rgba(247,200,42,.6),transparent 62%);
  animation:glowIdle 3s ease-in-out infinite;
}
@keyframes glowIdle{50%{opacity:.5}}
@keyframes glowPulse{0%,100%{opacity:.35;transform:scale(.9)}50%{opacity:.95;transform:scale(1.1)}}

.rays{
  position:absolute;inset:-75%;border-radius:50%;pointer-events:none;opacity:0;transition:opacity 1s;
  background:repeating-conic-gradient(from 0deg,rgba(255,226,120,.4) 0 8deg,transparent 8deg 24deg);
  -webkit-mask:radial-gradient(circle,#000 8%,transparent 62%);
  mask:radial-gradient(circle,#000 8%,transparent 62%);
  animation:spin 20s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

.sparkle{
  position:absolute;width:14px;height:14px;pointer-events:none;background:#fff6c2;
  clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);
  animation:twinkle 2s ease-in-out infinite;animation-delay:var(--d);
}

.tuft,.tie{transform-box:fill-box;transition:transform .7s ease,opacity .7s ease}
.tuft{transform-origin:50% 100%}
.tie{transform-origin:50% 50%}
.interior{opacity:0}

.shake1 .sack-wrap{animation:shake1 .5s linear infinite}
.shake2 .sack-wrap{animation:shake2 .3s linear infinite}
.still .sack-wrap,.open .sack-wrap{animation:none}
.shake1 .glow{animation:glowPulse 1.1s ease-in-out infinite}
.shake2 .glow{animation:glowPulse .5s ease-in-out infinite}
.still .glow{animation:none;opacity:.12}
@keyframes shake1{0%,100%{transform:rotate(0)}25%{transform:rotate(-2.5deg)}75%{transform:rotate(2.5deg)}}
@keyframes shake2{
  0%,100%{transform:translateX(0) rotate(0)}
  20%{transform:translateX(-6px) rotate(-5deg)}
  40%{transform:translateX(6px) rotate(5deg)}
  60%{transform:translateX(-5px) rotate(-4deg)}
  80%{transform:translateX(5px) rotate(4deg)}
}

.interior{transform-box:fill-box;transform-origin:50% 80%;transition:opacity .5s,transform .8s cubic-bezier(.2,1.4,.4,1)}
.hole{fill:#24160a;transition:fill 1s}
.flake{opacity:0;transition:opacity 1s .6s}

.loosen .tie{transform:translateY(6px) scaleX(.92)}
.loosen .tuft{transform:scaleY(.94)}
.open .interior{opacity:1;transform:scale(1.15,1.6)}
.open .tuft{transform:scaleY(.12) scaleX(1.3);opacity:0}
.open .tie{transform:translateY(40px) rotate(-14deg);opacity:0}
.win .hole{fill:#fff3b0}
.lose .flake{opacity:1}

.prize{
  position:absolute;left:50%;top:22%;width:34%;opacity:0;pointer-events:none;
  transform:translate(-50%,40%) scale(.2);
  filter:drop-shadow(0 0 14px rgba(255,226,120,.9));
}
.prize svg{display:block;width:100%;height:auto}
.win .prize{animation:rise 1.6s cubic-bezier(.2,1.4,.4,1) forwards,bob 2.6s 1.6s ease-in-out infinite}
@keyframes rise{to{opacity:1;transform:translate(-50%,-55%) scale(1)}}
@keyframes bob{
  0%,100%{opacity:1;transform:translate(-50%,-55%) scale(1)}
  50%{opacity:1;transform:translate(-50%,-62%) scale(1.05)}
}
.win .rays{opacity:1}
.win .glow{animation:none;opacity:1;transform:scale(1.15)}

.puff{
  position:absolute;left:50%;top:18%;width:42%;aspect-ratio:1;border-radius:50%;opacity:0;pointer-events:none;
  background:radial-gradient(circle,rgba(255,255,255,.75),transparent 70%);
  transform:translate(-50%,0) scale(.3);
}
.lose .puff{animation:puff 2s ease-out forwards}
@keyframes puff{
  0%{opacity:.9;transform:translate(-50%,0) scale(.3)}
  100%{opacity:0;transform:translate(-50%,-90%) scale(1.6)}
}
.lose .glow{animation:none;opacity:.15}

/* Panel */
.panel{
  margin:26px auto 0;max-width:460px;padding:20px 22px;border-radius:18px;text-align:center;
  background:rgba(10,20,50,.72);border:1px solid rgba(247,200,42,.45);
  box-shadow:0 10px 40px rgba(0,0,0,.45),inset 0 0 30px rgba(247,200,42,.08);
  backdrop-filter:blur(6px);
}
.panel p{margin:.5rem 0}
.lead{color:#e8dfc0}
.small{font-size:.9rem;color:#cfc7a8}
.message{min-height:1.6em;font-size:1.25rem;font-style:italic;color:#ffe27a}
.message:empty{display:none}
.message.pop{animation:pop .5s ease-out}
@keyframes pop{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}

label{display:block;margin:12px 0 4px;text-align:left;font-size:.95rem;color:#f3e8bd}
input{
  width:100%;padding:11px 12px;border-radius:10px;font:inherit;color:#fff;
  background:rgba(255,255,255,.1);border:1px solid rgba(247,200,42,.45);
}
input:focus{outline:2px solid var(--gold);outline-offset:1px}
.error{color:#ff9aa8;font-size:.95rem}

.btn{
  margin-top:16px;padding:12px 26px;border:0;border-radius:999px;cursor:pointer;
  font:700 1.05rem Georgia,serif;color:#3a2500;
  background:linear-gradient(180deg,#fff3b0,#f7c82a 55%,#c98f0a);
  box-shadow:0 4px 18px rgba(247,200,42,.45);
  transition:transform .15s,box-shadow .15s;
}
.btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 24px rgba(247,200,42,.6)}
.btn:disabled{opacity:.6;cursor:default}
.btn:focus-visible{outline:3px solid #fff;outline-offset:2px}
.small-btn{padding:8px 18px;font-size:.95rem;margin:10px 0 4px}

.win-title,.lose-title{
  margin:.2rem 0;font-family:'Segoe Script','Brush Script MT',cursive;font-size:2.2rem;
}
.win-title{color:#ffe27a;text-shadow:0 0 18px rgba(247,200,42,.8);animation:pop .8s ease-out}
.lose-title{color:#cfe0ff}
.code{
  display:block;margin:8px 0;padding:12px 8px;border:2px dashed var(--gold);border-radius:10px;
  background:rgba(0,0,0,.4);color:#ffe27a;user-select:all;
  font:700 clamp(1.3rem,6vw,1.9rem) Consolas,'Courier New',monospace;letter-spacing:.1em;
}

/* Splash and music */
.splash{
  position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:24px;text-align:center;
  background:radial-gradient(circle at 50% 40%,#1a2a66,#060d22);transition:opacity .8s;
}
.splash h2{
  margin:0 0 8px;font-family:'Segoe Script','Brush Script MT',cursive;font-size:clamp(2rem,7vw,3.4rem);
  background:linear-gradient(180deg,#fff3b0,#f7c82a 55%,#b8860b);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.splash p{max-width:420px;margin:0 auto;color:#e8dfc0}
.splash.gone{opacity:0;pointer-events:none}

.music{
  position:fixed;top:104px;right:14px;z-index:60;padding:7px 14px;border-radius:999px;cursor:pointer;
  font:.85rem Georgia,serif;color:#ffe27a;background:rgba(10,20,50,.7);border:1px solid rgba(247,200,42,.5);
}
.music:focus-visible{outline:2px solid #fff}

@media (max-width:700px){
  .snowman,.t2,.t4{display:none}
  .moon{width:46px;height:46px;top:112px}
}

@media (prefers-reduced-motion:reduce){
  .sack-wrap,.rays,.glow,.tl,.bulb,.arm-wave,.star,.sparkle{animation:none!important}
}