*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden;overscroll-behavior:none}
body{
  font-family:"Segoe UI Variable Display",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:#070d1f;color:#e8eefc;user-select:none;
  padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  -webkit-font-smoothing:antialiased}

/* ---------- screens & aurora background ---------- */
.screen{position:fixed;inset:0;display:none;flex-direction:column;overflow:hidden;
  background:
    radial-gradient(140% 100% at 50% -10%,#1b3a8f 0%,#101c46 38%,#070d1f 78%)}
.screen.active{display:flex}
.screen::before,.screen::after{
  content:"";position:absolute;border-radius:50%;pointer-events:none;
  filter:blur(60px);opacity:.55;z-index:0}
.screen::before{width:70vw;height:70vw;left:-25vw;top:-18vh;
  background:radial-gradient(circle,#3b82f6,transparent 70%);
  animation:drift1 18s ease-in-out infinite alternate}
.screen::after{width:60vw;height:60vw;right:-20vw;bottom:-12vh;
  background:radial-gradient(circle,#a855f7,transparent 70%);
  animation:drift2 22s ease-in-out infinite alternate}
@keyframes drift1{to{transform:translate(12vw,10vh) scale(1.15)}}
@keyframes drift2{to{transform:translate(-10vw,-8vh) scale(1.2)}}
.screen>*{position:relative;z-index:1}

/* ---------- top bar ---------- */
.topbar{display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;gap:10px;flex-shrink:0}
.title{font-weight:800;font-size:17px;letter-spacing:.3px;
  text-shadow:0 2px 10px rgba(0,0,0,.5)}
.icon-btn{width:42px;height:42px;border:0;border-radius:14px;cursor:pointer;
  color:#fff;font-size:18px;
  background:linear-gradient(180deg,rgba(255,255,255,.20),rgba(255,255,255,.06));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),
             inset 0 -2px 0 rgba(0,0,0,.25),0 4px 12px rgba(0,0,0,.35);
  transition:transform .12s}
.icon-btn:active{transform:translateY(2px) scale(.96);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 4px rgba(0,0,0,.4)}
.coin{display:flex;gap:7px;align-items:center;padding:9px 16px;border-radius:22px;
  font-weight:800;font-size:14px;color:#fff8dc;
  background:linear-gradient(180deg,rgba(250,204,21,.28),rgba(180,83,9,.28));
  border:1px solid rgba(253,224,71,.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 4px 14px rgba(0,0,0,.3)}

/* ---------- home ---------- */
.home-body{flex:1;display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:20px}
.logo{font-size:60px;filter:drop-shadow(0 8px 22px rgba(59,130,246,.75))}
.logo.big{font-size:96px;animation:float 3.4s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) rotate(-4deg)}
                 50%{transform:translateY(-14px) rotate(4deg)}}
.brand{font-weight:900;letter-spacing:.5px}
.brand.big{font-size:38px;margin-top:6px;
  background:linear-gradient(180deg,#fff,#9ec5ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 14px rgba(59,130,246,.5))}
.tag{color:#93a7cc;font-size:14px;margin:8px 0 34px}
.row-btns{display:flex;gap:12px;margin-top:16px}
.lvl-hint{margin-top:28px;color:#8fa3c8;font-size:13px}
.lvl-hint b{color:#fff}

/* ---------- buttons ---------- */
.btn{border:0;cursor:pointer;font-weight:800;border-radius:18px;
  padding:14px 26px;font-size:15px;color:#fff;position:relative;
  transition:transform .12s,box-shadow .12s}
.btn.primary{
  background:linear-gradient(180deg,#60a5fa,#2563eb 55%,#1d4ed8);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),
             0 6px 0 #1a3ba8,0 12px 28px rgba(37,99,235,.5)}
.btn.primary:active{transform:translateY(5px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),0 1px 0 #1a3ba8,0 4px 12px rgba(37,99,235,.4)}
.btn.ghost{background:linear-gradient(180deg,rgba(255,255,255,.18),rgba(255,255,255,.07));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 4px 0 rgba(0,0,0,.28),0 8px 20px rgba(0,0,0,.3)}
.btn.ghost:active{transform:translateY(3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 0 rgba(0,0,0,.28)}
.btn.xl{width:100%;max-width:270px;padding:15px 22px;font-size:17px;letter-spacing:1.4px}

/* slimmer PLAY button */
#btnPlay{max-width:236px;padding:12px 22px;font-size:16px;letter-spacing:2.2px;
  border-radius:15px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),
             0 5px 0 #1a3ba8,0 10px 24px rgba(37,99,235,.45)}
#btnPlay:active{transform:translateY(4px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),0 1px 0 #1a3ba8,0 4px 10px rgba(37,99,235,.4)}

/* ---------- loading ---------- */
#loading{align-items:center;justify-content:center}
.spinner{width:36px;height:36px;border:3px solid rgba(255,255,255,.14);
  border-top-color:#60a5fa;border-radius:50%;animation:spin .8s linear infinite;margin:24px 0 10px}
@keyframes spin{to{transform:rotate(360deg)}}
.load-msg{color:#7286ab;font-size:13px}

/* ---------- board ---------- */
.hud{display:flex;justify-content:center;gap:10px;padding:0 16px 8px;flex-shrink:0}
.hud span{font-size:12px;color:#9fb3d6;padding:6px 14px;border-radius:14px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09)}
.hud b{color:#fff;font-size:13px}
#cv{flex:1;min-height:0;width:100%;display:block;touch-action:none}

.tools{display:flex;justify-content:center;gap:10px;padding:10px 12px 18px;
  flex-wrap:wrap;flex-shrink:0}
.tool{position:relative;min-width:74px;border:0;cursor:pointer;border-radius:18px;
  padding:11px 14px;color:#e8eefc;display:flex;flex-direction:column;
  align-items:center;gap:3px;transition:transform .12s;
  background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.05));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 4px 0 rgba(0,0,0,.3),0 8px 18px rgba(0,0,0,.32)}
.tool:active{transform:translateY(3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 1px 0 rgba(0,0,0,.3)}
.tool i{font-style:normal;font-size:20px;filter:drop-shadow(0 2px 4px rgba(0,0,0,.4))}
.tool span{font-size:11px;color:#9fb3d6;font-weight:600}
.tool em{position:absolute;top:-7px;right:-5px;font-style:normal;font-size:10px;
  font-weight:900;padding:3px 7px;border-radius:11px;color:#3b2400;
  background:linear-gradient(180deg,#fde047,#f59e0b);
  box-shadow:0 2px 6px rgba(0,0,0,.4)}
.tool:disabled{opacity:.4}

/* ---------- level map ---------- */
.map-grid{flex:1;min-height:0;overflow-y:auto;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:12px;padding:16px 16px 28px}
.lv{aspect-ratio:1;border:0;border-radius:20px;cursor:pointer;font-weight:900;
  font-size:17px;color:#cfe0ff;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,.04));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 4px 0 rgba(0,0,0,.3),0 8px 16px rgba(0,0,0,.28);
  transition:transform .12s}
.lv:active{transform:translateY(3px)}
.lv.done{color:#fff;background:linear-gradient(180deg,#4ade80,#16a34a);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 4px 0 #14532d,0 10px 20px rgba(22,163,74,.4)}
.lv.cur{color:#fff;background:linear-gradient(180deg,#60a5fa,#2563eb);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 4px 0 #1a3ba8,0 0 0 3px rgba(96,165,250,.35),
             0 10px 22px rgba(37,99,235,.5);
  animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{50%{transform:scale(1.06)}}
.lv.lock{opacity:.35;box-shadow:none;background:rgba(255,255,255,.06)}

/* ---------- leaderboard ---------- */
.tabs{display:flex;gap:8px;padding:0 16px 12px;flex-shrink:0}
.tab{flex:1;border:0;cursor:pointer;padding:11px;border-radius:14px;
  font-size:12px;font-weight:700;color:#9fb3d6;
  background:rgba(255,255,255,.07);transition:.15s}
.tab.active{color:#fff;background:linear-gradient(180deg,#60a5fa,#2563eb);
  box-shadow:0 4px 14px rgba(37,99,235,.45)}
.rank-list{flex:1;min-height:0;overflow-y:auto;padding:0 16px 24px}
.rank{display:flex;align-items:center;gap:12px;padding:13px 15px;margin-bottom:9px;
  border-radius:16px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.07);backdrop-filter:blur(6px)}
.rank.me{background:linear-gradient(90deg,rgba(37,99,235,.4),rgba(37,99,235,.15));
  border-color:#60a5fa;box-shadow:0 0 18px rgba(59,130,246,.35)}
.rank .n{width:28px;font-weight:900;color:#8fa3c8;font-size:13px}
.rank:nth-child(1) .n{color:#fbbf24}
.rank:nth-child(2) .n{color:#e2e8f0}
.rank:nth-child(3) .n{color:#d97706}
.rank .nm{flex:1;font-size:14px;font-weight:600}
.rank .pt{font-weight:800;font-size:13px;color:#fbbf24}

/* ---------- overlays ---------- */
.overlay{position:fixed;inset:0;z-index:50;display:none;padding:22px;
  align-items:center;justify-content:center;
  background:rgba(4,8,22,.78);backdrop-filter:blur(8px)}
.overlay.show{display:flex}
.overlay.hard{background:rgba(4,8,22,.97)}
.sheet{width:100%;max-width:370px;padding:30px 24px;text-align:center;
  border-radius:30px;position:relative;overflow:hidden;
  background:linear-gradient(180deg,#243456,#151f3c);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 24px 70px rgba(0,0,0,.65),inset 0 1px 0 rgba(255,255,255,.18);
  animation:pop .3s cubic-bezier(.34,1.56,.64,1)}
.sheet::before{content:"";position:absolute;top:-60%;left:-30%;width:160%;height:120%;
  background:radial-gradient(circle,rgba(96,165,250,.28),transparent 62%);pointer-events:none}
@keyframes pop{from{transform:scale(.82) translateY(20px);opacity:0}}
.sheet h2{font-size:22px;margin-bottom:10px;font-weight:900}
.sheet p{color:#9fb3d6;font-size:14px}
.sheet .btn{margin-top:12px}
.stars{font-size:42px;letter-spacing:6px;margin-bottom:8px;
  filter:drop-shadow(0 4px 14px rgba(250,204,21,.6));
  animation:starPop .55s cubic-bezier(.34,1.56,.64,1)}
@keyframes starPop{0%{transform:scale(0) rotate(-30deg)}100%{transform:scale(1) rotate(0)}}
.win-stats{color:#9fb3d6;font-size:13px;margin-bottom:8px}
.reward{color:#fde047;font-weight:900;font-size:18px;margin-bottom:16px;
  text-shadow:0 2px 12px rgba(250,204,21,.5)}
.sw{display:flex;justify-content:space-between;align-items:center;
  padding:13px 4px;font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.09)}
.sw input{width:46px;height:26px;accent-color:#3b82f6}
.who{margin:18px 0 8px;color:#9fb3d6;font-size:13px}
.name-in{width:100%;padding:13px;border-radius:14px;font-size:15px;text-align:center;
  color:#fff;background:rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.16)}
.name-in:focus{outline:0;border-color:#60a5fa;box-shadow:0 0 0 3px rgba(96,165,250,.25)}
.privacy{display:block;margin-top:18px;color:#6b7fa3;font-size:12px}

/* ---------- toast ---------- */
#toast{position:fixed;left:50%;bottom:100px;z-index:90;white-space:nowrap;
  transform:translateX(-50%) translateY(22px);opacity:0;pointer-events:none;
  padding:12px 22px;border-radius:24px;font-size:13px;font-weight:600;
  background:linear-gradient(180deg,#243456,#141d38);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 10px 30px rgba(0,0,0,.5);transition:.25s}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#adSlot{height:0;flex-shrink:0}

/* ---------- scrollbars ---------- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:3px}

/* ======================= loading screen ======================= */
#loading{align-items:center;justify-content:center}
.load-wrap{display:flex;flex-direction:column;align-items:center;padding:0 28px;text-align:center}
.load-tubes{display:flex;gap:11px;align-items:flex-end;height:96px;margin-bottom:26px}
.lt{position:relative;width:26px;height:84px;border-radius:6px 6px 13px 13px;display:block;
  background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.04));
  border:2px solid rgba(255,255,255,.28);overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 8px 20px rgba(0,0,0,.4);
  animation:ltBob 1.7s ease-in-out infinite}
.lt::after{content:"";position:absolute;left:0;right:0;bottom:0;height:0;
  border-radius:0 0 11px 11px;animation:ltFill 2.6s ease-in-out infinite}
.lt.t1::after{background:linear-gradient(180deg,#7dd3fc,#0284c7)}
.lt.t2{animation-delay:.15s}.lt.t2::after{background:linear-gradient(180deg,#86efac,#16a34a);animation-delay:.3s}
.lt.t3{animation-delay:.3s} .lt.t3::after{background:linear-gradient(180deg,#fde047,#f59e0b);animation-delay:.6s}
.lt.t4{animation-delay:.45s}.lt.t4::after{background:linear-gradient(180deg,#f0abfc,#a855f7);animation-delay:.9s}
@keyframes ltBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes ltFill{0%{height:12%}45%{height:82%}100%{height:12%}}

.shine{position:relative;background:linear-gradient(90deg,#ffffff,#9ec5ff 38%,#ffffff 52%,#9ec5ff 66%,#ffffff);
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:shineMove 3.4s linear infinite}
@keyframes shineMove{to{background-position:-220% 0}}

.load-bar{width:200px;height:6px;border-radius:99px;margin:22px 0 12px;overflow:hidden;
  background:rgba(255,255,255,.10);box-shadow:inset 0 1px 3px rgba(0,0,0,.5)}
.load-bar span{display:block;height:100%;width:40%;border-radius:99px;
  background:linear-gradient(90deg,#60a5fa,#a855f7);
  box-shadow:0 0 12px rgba(96,165,250,.8);animation:loadSlide 1.4s ease-in-out infinite}
@keyframes loadSlide{0%{transform:translateX(-110%)}100%{transform:translateX(260%)}}
.tip{margin-top:16px;color:#5f74a0;font-size:12px;max-width:260px;line-height:1.5}

/* ======================= home polish ======================= */
.tb-right{display:flex;gap:9px}
.hello{color:#9fb3d6;font-size:14px;margin-bottom:6px}
.hello b{color:#fff;font-weight:800}
.hero{position:relative;height:132px;display:flex;align-items:flex-end;justify-content:center;margin-bottom:6px}
.hero-glow{position:absolute;width:230px;height:230px;border-radius:50%;
  background:radial-gradient(circle,rgba(96,165,250,.35),transparent 65%);filter:blur(12px);
  animation:heroPulse 4s ease-in-out infinite}
@keyframes heroPulse{50%{transform:scale(1.12);opacity:.75}}
.hero-tubes{display:flex;gap:9px;align-items:flex-end;position:relative}
.ht{width:24px;height:76px;border-radius:5px 5px 12px 12px;display:block;position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(255,255,255,.15),rgba(255,255,255,.04));
  border:2px solid rgba(255,255,255,.3);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 10px 22px rgba(0,0,0,.45);
  animation:htFloat 3.6s ease-in-out infinite}
.ht::after{content:"";position:absolute;left:0;right:0;bottom:0;border-radius:0 0 10px 10px}
.ht.h1::after{height:70%;background:linear-gradient(180deg,#7dd3fc,#0284c7)}
.ht.h2{animation-delay:.2s}.ht.h2::after{height:45%;background:linear-gradient(180deg,#86efac,#16a34a)}
.ht.h3{animation-delay:.4s}.ht.h3::after{height:88%;background:linear-gradient(180deg,#fde047,#f59e0b)}
.ht.h4{animation-delay:.6s}.ht.h4::after{height:32%;background:linear-gradient(180deg,#fca5a5,#dc2626)}
.ht.h5{animation-delay:.8s}.ht.h5::after{height:60%;background:linear-gradient(180deg,#f0abfc,#a855f7)}
@keyframes htFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

.gleam{overflow:hidden}
.gleam::after{content:"";position:absolute;top:0;left:-60%;width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-18deg);animation:gleamSweep 3.6s ease-in-out infinite}
@keyframes gleamSweep{0%{left:-60%}55%{left:130%}100%{left:130%}}

/* ======================= first-run name ======================= */
.name-avatar{width:78px;height:78px;margin:0 auto 14px;border-radius:50%;font-size:38px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,#60a5fa,#2563eb);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.5),0 12px 28px rgba(37,99,235,.55);
  animation:float 3.4s ease-in-out infinite}
.name-in.big{margin-top:16px;padding:16px;font-size:17px;font-weight:700;letter-spacing:.5px}
.err{min-height:18px;margin:8px 0 2px;font-size:12.5px;color:#fca5a5;font-weight:600}
.fine{margin-top:14px;color:#6b7fa3;font-size:11.5px}

/* ======================= settings extras ======================= */
.vol-row{display:flex;flex-direction:column;gap:9px;padding:14px 4px 4px;text-align:left;
  font-size:15px;font-weight:600}
.vol-row input[type=range]{width:100%;accent-color:#60a5fa}
.icon-btn.muted{opacity:.55;filter:grayscale(1)}
#board .tb-right{display:flex;gap:9px;align-items:center}
/* ======================= board header + reward button ======================= */
#board .topbar{align-items:flex-start;padding:12px 14px 4px}
.brandline{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:3px}
.game-name{font-size:11px;font-weight:900;letter-spacing:2.4px;text-transform:uppercase;
  color:#8fa8d4;text-shadow:0 2px 8px rgba(0,0,0,.5)}
#board .title{margin-top:3px;font-size:16px}
#board .hud{align-items:center;padding-top:6px}

.rw-btn{position:relative;display:flex;align-items:center;gap:6px;border:0;cursor:pointer;
  padding:6px 11px;border-radius:14px;font-weight:900;font-size:12px;color:#3b2400;
  background:linear-gradient(180deg,#fde047,#f59e0b);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 3px 0 #b45309,0 6px 14px rgba(245,158,11,.35);
  transition:transform .12s}
.rw-btn i{font-style:normal;font-size:15px}
.rw-btn em{font-style:normal;font-size:10px;padding:2px 6px;border-radius:9px;
  background:rgba(0,0,0,.28);color:#fff}
.rw-btn:active{transform:translateY(3px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 1px 0 #b45309}
.rw-btn:disabled{opacity:.45}

/* keep the tool row clear of the banner */
.tools{padding-bottom:14px}
#adSlot{height:0;flex-shrink:0}

/* ---- exit dialog ---- */
.exit-wrap{position:fixed;inset:0;background:rgba(4,10,20,.68);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;padding:22px;z-index:9999;
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease}
.exit-wrap.on{opacity:1;visibility:visible}
.exit-card{width:100%;max-width:330px;background:linear-gradient(180deg,#1d2a3d,#16202f);
  border:1px solid rgba(255,255,255,.10);border-radius:20px;padding:22px 20px;text-align:center;
  box-shadow:0 22px 50px rgba(0,0,0,.55);transform:translateY(16px) scale(.96);transition:transform .24s cubic-bezier(.2,.9,.3,1.2)}
.exit-wrap.on .exit-card{transform:translateY(0) scale(1)}
.exit-title{font-size:19px;font-weight:800;color:#eaf2ff;margin-bottom:4px}
.exit-sub{font-size:13px;color:#93a3b8;margin-bottom:16px}
.exit-rate{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
  border-radius:14px;padding:12px;margin-bottom:14px;font-size:12.5px;color:#c6d4e6;
  display:flex;flex-direction:column;gap:10px;align-items:center}
.exit-row{display:flex;gap:10px}
.exit-btn{flex:1;border:0;border-radius:13px;padding:12px 14px;font-size:14px;font-weight:700;cursor:pointer}
.exit-btn.ghost{background:rgba(255,255,255,.10);color:#e6eefb}
.exit-btn.danger{background:linear-gradient(180deg,#ff6b6b,#e04141);color:#fff}
.exit-btn:active{transform:translateY(1px)}

.ws-toast{position:fixed;left:50%;bottom:84px;transform:translateX(-50%) translateY(10px);
  background:rgba(12,20,32,.94);color:#eaf2ff;border:1px solid rgba(255,255,255,.12);
  padding:10px 16px;border-radius:12px;font-size:13.5px;z-index:10000;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.ws-toast.on{opacity:1;transform:translateX(-50%) translateY(0)}