* { -webkit-tap-highlight-color: transparent; outline: none; }
:root{--frame:8px;--btn-w:220px;--accent-grad:linear-gradient(135deg,#4facfe,#00f2fe);--shadow:0 10px 30px rgba(0,0,0,0.12)}
html,body{height:100%;width:100%;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:visible}
body{
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial;
  background:linear-gradient(135deg,#dbeafe,#e0f7fa);
  color:#222;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-y:auto;
  margin:0;
  padding:0;
  overscroll-behavior-y: none;
}
body.noscroll{overflow:hidden!important;height:100vh!important;height:100dvh!important;touch-action:none;position:fixed;width:100%}

#viewport {
  height: 100vh;
  height: 100dvh; 
  width: 100%;
  box-sizing: border-box;
  padding: var(--frame);
  padding-top: max(var(--frame), env(safe-area-inset-top));
  padding-bottom: max(var(--frame), env(safe-area-inset-bottom));
  padding-left: max(var(--frame), env(safe-area-inset-left));
  padding-right: max(var(--frame), env(safe-area-inset-right));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform .28s ease, width .28s ease, height .28s ease;
}

html.manual-rotate #viewport {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 100vh; 
  width: 100dvh;
  height: 100vw;
  transform: translate(-50%,-50%) rotate(90deg);
  transform-origin: center center;
  z-index: 10000;
  margin: 0;
  background: #dbeafe;
  padding-left: max(var(--frame), env(safe-area-inset-top)); 
  padding-right: max(var(--frame), env(safe-area-inset-bottom));
  padding-top: max(var(--frame), env(safe-area-inset-left));
  padding-bottom: max(var(--frame), env(safe-area-inset-right));
}
html.manual-rotate #controls{display:none!important}

#manualExitBtn {
  display: none;
  position: fixed;
  top: max(10px, env(safe-area-inset-top)); 
  right: max(10px, env(safe-area-inset-right));
  z-index: 20000;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ff4b4b;
  color: #fff;
  font-size: 24px;
  border: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  touch-action: manipulation; 
}
#manualExitBtn:active{transform:scale(0.95);background:#e04040}
html.manual-rotate #manualExitBtn,html.is-fullscreen #manualExitBtn{display:flex}

#puzzle-container {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: transparent;
  box-shadow: var(--shadow);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}
.error-msg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:#ef4444;font-weight:600;width:80%;background:rgba(255,255,255,0.9);padding:20px;border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,0.1)}

.tile {
  position: absolute;
  box-sizing: border-box;
  cursor: grab;
  transition: transform .22s ease, box-shadow .18s ease;
  will-change: transform;
  overflow: visible;
  background: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  outline: 1px solid transparent; 
}
.tile img.piece-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
  position: absolute;
  left: 0;
  top: 0;
  -webkit-touch-callout: none;
}
.tile:hover{box-shadow:0 8px 20px rgba(0,0,0,0.18)}
.dragging{z-index:15000;cursor:grabbing;transition:none!important;box-shadow:0 18px 40px rgba(0,0,0,0.28)}

#winMessage {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    background: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}
#winMessage.show { opacity: 1; }
#winMessage .win-card {
    background: rgba(28, 28, 30, 0.95);
    padding: 40px 60px;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.15) inset;
    text-align: center;
    transform: scale(0.8) translateY(30px);
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 90%;
}
#winMessage.show .win-card { transform: scale(1) translateY(0); }
#winMessage .win-title {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 900;
    font-size: 2.8rem;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #FFD700 0%, #FF8C00 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 10px rgba(255, 140, 0, 0.3));
    animation: pulseText 2s infinite ease-in-out;
}
@keyframes pulseText {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 2px 10px rgba(255, 140, 0, 0.3)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 2px 20px rgba(255, 140, 0, 0.6)); }
}
@media(max-width: 600px) {
    #winMessage .win-card { padding: 30px 40px; }
    #winMessage .win-title { font-size: 2rem; }
}

#controls{box-sizing:border-box;padding:18px 12px;text-align:center;background:transparent;position:relative;z-index:100;transition:opacity .3s ease,filter .3s ease}
#controls.disabled{opacity:0.6;pointer-events:none;filter:grayscale(0.5)}
#controls .label-text{display:block;margin-bottom:8px;font-size:1.05rem}
select.native-select{position:absolute;left:-9999px;opacity:0;pointer-events:none;height:0;width:0}

.custom-select {
    display: inline-block;
    width: var(--btn-w);
    margin: 8px auto;
    position: relative;
    font-size: 1rem;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.06);
    background: rgba(255,255,255,0.98);
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    box-shadow: 0 6px 18px rgba(0,0,0,0.03);
    touch-action: manipulation; 
}
.custom-select__value{padding:10px 14px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.custom-select__arrow{position:absolute;right:10px;top:50%;transform:translateY(-50%);pointer-events:none;font-size:.9rem;opacity:.6}
.custom-select__list{display:none;position:absolute;left:0;right:0;top:100%;margin-top:8px;background:#fff;border-radius:8px;box-shadow:0 12px 40px rgba(0,0,0,0.12);max-height:240px;overflow:auto;z-index:40000;padding:6px}
.custom-select.open .custom-select__list{display:block}
.custom-select__item{padding:10px 12px;text-align:center;cursor:pointer;border-radius:6px;margin:3px 0}
.custom-select__item:hover{background:rgba(0,0,0,0.04)}

button {
    display: block;
    width: var(--btn-w);
    margin: 8px auto;
    padding: 10px 14px;
    font-size: 1rem;
    border-radius: 8px;
    border: 0;
    outline: 0;
    cursor: pointer;
    background: var(--accent-grad);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    transition: transform .18s ease,box-shadow .18s ease,filter .18s ease;
    touch-action: manipulation; 
    -webkit-user-select: none;
    user-select: none;
}
button:hover{transform:translateY(-4px) scale(1.03);box-shadow:0 12px 28px rgba(0,0,0,0.18);filter:brightness(1.05)}
button:active{transform:translateY(-1px) scale(.995);opacity:.98}

#feedback-text{margin-top:12px;font-size:.98rem;color:#1f2937;line-height:1.35;max-width:300px;margin-left:auto;margin-right:auto;}
#telegram-link{display:block;margin:14px auto 36px;width:70px;height:70px;border-radius:50%;box-shadow:0 8px 20px rgba(0,0,0,0.12);transition:transform .28s ease,box-shadow .28s ease;overflow:hidden}
#telegram-link:hover{transform:scale(1.08) rotate(6deg);box-shadow:0 14px 34px rgba(0,0,0,0.18)}
#telegram-link:active{transform:scale(.95)}
#telegram-btn{width:100%;height:100%;display:block;border-radius:50%;object-fit:cover;pointer-events:none}

html.is-fullscreen #controls{display:none!important}
@media(max-width:820px){#viewport{height:auto;align-items:flex-start}.custom-select,button{width:88%}}
@media(max-width:520px){.custom-select,button{width:88%}}