:root{
  --bg:#0A0E27; --panel:#121a36; --ink:#eaf2ff; --dim:#8aa0c8;
  --cyan:#22D3EE; --pink:#F0398B; --lime:#A3E635; --gold:#FFB020; --amber:#FFB020;
  --accent:var(--cyan);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden}
body{
  background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  user-select:none;-webkit-user-select:none;touch-action:none;
  display:flex;align-items:center;justify-content:center;
}
.screen{position:fixed;inset:0;display:none;align-items:center;justify-content:center}
.screen.active{display:flex}

/* ---------- MENU ---------- */
#screen-menu{background:radial-gradient(120% 90% at 50% 0%,#16224a 0%,#0A0E27 60%)}
.menu-wrap{display:flex;flex-direction:column;align-items:center;gap:12px;padding:24px;width:100%;max-width:440px}
.title{font-size:15vw;line-height:.92;font-weight:900;letter-spacing:3px;text-align:center;
  color:#fff;text-shadow:0 0 28px var(--amber)}
.title span{color:var(--amber)}
@media(min-width:480px){.title{font-size:66px}}
.tagline{color:var(--amber);margin-top:2px;letter-spacing:3px;text-transform:uppercase;font-size:12px;font-weight:700}
.lore{color:var(--dim);font-size:13px;line-height:1.5;text-align:center;margin:6px 0 16px;font-style:italic}
.mutebtn{margin-top:6px;background:none;border:none;color:var(--dim);font-size:22px;cursor:pointer;line-height:1}
.menu-progress{margin-top:10px;color:#8aa0c8;font-size:12px;text-align:center}
.version{margin-top:8px;color:#43507a;font-size:12px}
.result-unlock{color:var(--lime);font-weight:700;font-size:14px;text-shadow:0 0 12px var(--lime)}
.ubar{height:6px;background:#10182c;border-radius:6px;overflow:hidden;margin-top:6px}
.ubar>div{height:100%;background:linear-gradient(90deg,#7cf6ff,#b5ff7c);border-radius:6px}
.ucond{font-size:11px;color:var(--dim);margin-top:4px}
.shop-card.unlocked{border-color:#2f6e3a}
.unlocked-tag{margin-top:6px;font-size:11px;font-weight:800;color:var(--lime);letter-spacing:1px}

.big-btn{width:100%;max-width:320px;padding:18px;border:none;border-radius:16px;
  background:linear-gradient(180deg,#1ce0ff,#0aa6cc);color:#04121a;font-weight:800;
  font-size:19px;letter-spacing:1px;cursor:pointer;box-shadow:0 8px 30px #19c8e055}
.big-btn:active{transform:translateY(2px)}
.big-btn.ghost{background:transparent;color:var(--cyan);border:2px solid #1c6e80;box-shadow:none}
.big-btn.daily-btn{background:linear-gradient(180deg,#ffc34d,#e0900f);color:#2a1800;box-shadow:0 8px 30px #FFB02055}

/* ---------- PANELS ---------- */
.panel{width:100%;max-width:480px;height:100%;display:flex;flex-direction:column;
  padding:max(18px,env(safe-area-inset-top)) 16px 16px}
.panel-head{display:flex;align-items:center;gap:12px;padding:8px 4px 16px}
.panel-head h2{font-size:24px;flex:1}
.back{background:none;border:none;color:var(--ink);font-size:34px;line-height:1;cursor:pointer;width:40px}
.coins{color:var(--gold);font-weight:700;font-size:17px}

.diff-list,.shop-list{display:flex;flex-direction:column;gap:12px;overflow-y:auto;padding-bottom:24px}
.diff-card{text-align:left;background:var(--panel);border:1px solid #1c2742;border-left:5px solid var(--c);
  border-radius:14px;padding:16px;color:var(--ink);cursor:pointer}
.diff-card:active{transform:scale(.99)}
.diff-card h3{color:var(--c);font-size:20px}
.diff-card p{color:var(--dim);font-size:13px;margin:6px 0}
.diff-meta{display:flex;gap:14px;font-size:12px;color:var(--dim)}
.diff-card .best{margin-top:8px;font-size:12px;color:var(--gold)}

.shop-card{display:flex;align-items:center;gap:14px;background:var(--panel);
  border:1px solid #1c2742;border-radius:14px;padding:14px}
.shop-orb{width:46px;height:46px;flex:0 0 46px;border-radius:50%;display:grid;place-items:center}
.shop-orb span{width:30px;height:30px;border-radius:50%;background:var(--c);
  box-shadow:0 0 18px var(--c)}
.shop-info{flex:1}
.shop-info h3{color:var(--c);font-size:17px}
.shop-info p{color:var(--dim);font-size:12px;margin:3px 0 6px}
.shop-info .stats{display:flex;gap:10px;font-size:12px;color:#b8c6e6;flex-wrap:wrap}
.shop-info .special{color:var(--pink);text-transform:uppercase;font-weight:700;font-size:10px;
  border:1px solid var(--pink);border-radius:6px;padding:1px 5px}
.buy{flex:0 0 auto;padding:10px 14px;border:none;border-radius:12px;background:var(--cyan);
  color:#04121a;font-weight:800;cursor:pointer;white-space:nowrap}
.buy:disabled{opacity:.45;cursor:default}
.buy.owned{background:#1c2742;color:var(--dim)}

/* ---------- GAME ---------- */
#screen-game{flex-direction:column}
#game-canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hud{position:absolute;top:0;left:0;right:0;padding:max(10px,env(safe-area-inset-top)) 14px 0;
  pointer-events:none;display:flex;flex-direction:column;gap:8px}
.hud-top{display:flex;align-items:flex-start;justify-content:space-between}
.icon-btn{pointer-events:auto;background:#0e1426aa;border:1px solid #1c2742;color:var(--ink);
  width:40px;height:40px;border-radius:12px;font-size:16px;cursor:pointer}
.hud-center{text-align:center}
.score{font-size:30px;font-weight:900;text-shadow:0 0 14px #19c8e088}
.score.pop{animation:scorePop .25s ease-out}
@keyframes scorePop{0%{transform:scale(1)}40%{transform:scale(1.18);color:#fff}100%{transform:scale(1)}}
@keyframes frenzyDrain{from{width:100%}to{width:0%}}
body.frenzy #frenzy-fill{background:linear-gradient(90deg,#ff3d81,#ffd166);box-shadow:0 0 12px #ff3d81}
.level{font-size:12px;color:var(--dim);letter-spacing:1px}
.frenzy-track{height:7px;background:#10182c;border-radius:6px;overflow:hidden;margin:0 2px}
#frenzy-fill{height:100%;width:0;border-radius:6px;
  background:linear-gradient(90deg,var(--gold),var(--pink));transition:width .15s}
.lives{display:flex;gap:4px;justify-content:center;font-size:18px;line-height:1}
.heart{color:#ff5a7e;text-shadow:0 0 8px #ff3d81}
.heart.lost{color:#33405e;text-shadow:none}
.recharge-track{height:5px;background:#10182c;border-radius:6px;overflow:hidden;margin:2px 30px 0}
#recharge-fill{height:100%;width:0;border-radius:6px;background:linear-gradient(90deg,#5fe019,#b5ff7c);transition:width .12s}
.shots{display:flex;gap:5px;justify-content:center}
.shot-dot{width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.charge-pip{width:14px;height:6px;border-radius:3px;background:#2a3556}
.charge-pip.on{background:var(--amber);box-shadow:0 0 8px var(--amber)}

.tut{position:absolute;top:58%;left:0;right:0;text-align:center;color:var(--ink);font-size:15px;line-height:1.6;
  padding:0 28px;pointer-events:none;opacity:0;transition:opacity .4s;text-shadow:0 2px 12px #000}
.tut.show{opacity:1}
.tut b{color:var(--amber)}
.combo-pop{position:absolute;top:32%;left:0;right:0;text-align:center;font-size:34px;font-weight:900;
  color:var(--gold);text-shadow:0 0 20px var(--gold);opacity:0;transform:scale(.6);pointer-events:none}
.combo-pop.show{animation:pop .9s ease-out}
.combo-banner{position:absolute;top:38%;left:0;right:0;text-align:center;font-weight:900;
  color:var(--amber);text-shadow:0 0 24px var(--amber),0 0 4px #000;letter-spacing:1px;opacity:0;pointer-events:none}
.combo-banner.show{animation:caram .8s ease-out}
@keyframes caram{0%{opacity:0;transform:scale(.5) rotate(-3deg)}25%{opacity:1;transform:scale(1.12)}100%{opacity:0;transform:scale(1.25)}}
@keyframes pop{0%{opacity:0;transform:scale(.6)}20%{opacity:1;transform:scale(1.15)}100%{opacity:0;transform:scale(1)}}

.frenzy-banner{position:absolute;top:42%;left:0;right:0;text-align:center;font-size:46px;font-weight:900;
  color:var(--pink);text-shadow:0 0 30px var(--pink);letter-spacing:2px;opacity:0;pointer-events:none}
.frenzy-banner.show{animation:frenzyIn 1.4s ease-out}
@keyframes frenzyIn{0%{opacity:0;transform:scale(.4) rotate(-6deg)}30%{opacity:1;transform:scale(1.1)}100%{opacity:0;transform:scale(1.4)}}
body.frenzy #screen-game{box-shadow:inset 0 0 90px #ff3d8166}
body.frenzy{animation:frenzyPulse .5s infinite alternate}
@keyframes frenzyPulse{to{filter:saturate(1.3)}}

.ball-selector{position:absolute;left:0;right:0;bottom:max(14px,env(safe-area-inset-bottom));
  display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:0 12px;pointer-events:auto}
.ball-chip{display:flex;align-items:center;gap:6px;background:#0e1426cc;border:1.5px solid #243150;
  color:var(--dim);border-radius:20px;padding:7px 12px;font-size:12px;font-weight:600;cursor:pointer}
.ball-chip.sel{border-color:var(--c);color:#fff;box-shadow:0 0 14px var(--c)}
.ball-chip .dot{width:11px;height:11px;border-radius:50%;background:var(--c);box-shadow:0 0 8px var(--c)}

/* ---------- RESULT ---------- */
#screen-result{background:#03050ccc;backdrop-filter:blur(6px)}
.result-panel{justify-content:center;align-items:center;text-align:center;gap:20px;max-width:380px;height:auto}
#result-title{font-size:30px;font-weight:900;letter-spacing:1px}
#result-title.win{color:var(--lime);text-shadow:0 0 20px var(--lime)}
#result-title.lose{color:var(--pink);text-shadow:0 0 20px var(--pink)}
.result-stats{width:100%;display:flex;flex-direction:column;gap:10px}
.rstat{display:flex;justify-content:space-between;background:var(--panel);border:1px solid #1c2742;
  border-radius:12px;padding:12px 16px}
.rstat span{color:var(--dim)} .rstat b{font-size:17px}
.result-btns{display:flex;flex-direction:column;gap:10px;width:100%}

/* ---------- meta shop ---------- */
.shop-icon{width:46px;height:46px;flex:0 0 46px;border-radius:14px;display:grid;place-items:center;
  font-size:24px;background:#10182c;border:1px solid #243150}
.pips{display:flex;gap:5px;margin-top:8px}
.pip{width:18px;height:7px;border-radius:4px;background:#1c2742}
.pip.on{background:var(--cyan);box-shadow:0 0 8px var(--cyan)}

/* ---------- between-wave upgrades ---------- */
#screen-upgrade{background:#03050cdd;backdrop-filter:blur(6px)}
.upg-sub{color:var(--dim);margin:-6px 0 4px;letter-spacing:1px;font-size:13px}
.upgrade-list{display:flex;flex-direction:column;gap:12px;width:100%}
.upg-card{display:flex;align-items:center;gap:14px;text-align:left;background:var(--panel);
  border:1px solid #243150;border-radius:16px;padding:16px;color:var(--ink);cursor:pointer;
  transition:transform .08s,border-color .15s}
.upg-card:active{transform:scale(.98)}
.upg-card:hover{border-color:var(--cyan)}
.upg-icon{width:48px;height:48px;flex:0 0 48px;border-radius:50%;display:grid;place-items:center;
  font-size:24px;background:radial-gradient(circle,#13335a,#0b1830);box-shadow:0 0 16px #19c8e055}
.upg-card h3{color:var(--cyan);font-size:17px}
.upg-card p{color:var(--dim);font-size:13px;margin-top:3px}