:root {
  --bg: #06081a;
  --panel-bg: rgba(20,22,50,0.80);
  --cyan: #00e5ff;
  --magenta: #e040fb;
  --gold: #ffd740;
  --green: #69f0ae;
  --orange: #ff9100;
  --deep: #0d1030;
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:'Segoe UI',Arial,sans-serif;
  background:var(--bg);
  color:#fff;
  overflow:hidden;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
  height:100vh;width:100vw;
}

/* ── PRELOADER ── */
#preloader{
  position:fixed;inset:0;display:flex;flex-direction:column;
  justify-content:center;align-items:center;
  background:radial-gradient(ellipse at 50% 40%,#0d1030 0%,#050816 100%);
  z-index:9999;transition:opacity 0.6s,visibility 0.6s;
}
#preloader.hide{opacity:0;visibility:hidden;pointer-events:none}
.loader-ring{
  width:110px;height:110px;border-radius:50%;
  border:3px solid transparent;
  border-top-color:var(--cyan);border-right-color:var(--magenta);
  animation:spinLoader 1s linear infinite;margin-bottom:28px;position:relative;
}
.loader-ring::after{
  content:'';position:absolute;inset:12px;border-radius:50%;
  border:3px solid transparent;border-bottom-color:var(--gold);border-left-color:var(--green);
  animation:spinLoader 1.5s linear reverse infinite;
}
.loader-ring::before{
  content:'🛸';position:absolute;inset:0;display:flex;
  align-items:center;justify-content:center;font-size:38px;
  animation:pulseUfo 0.8s ease-in-out infinite;
}
@keyframes spinLoader{to{transform:rotate(360deg)}}
@keyframes pulseUfo{0%,100%{transform:scale(1)}50%{transform:scale(1.25)}}
.status-text{
  font-size:14px;letter-spacing:3px;color:#aaccff;margin-bottom:18px;
  text-transform:uppercase;animation:flicker 2s infinite;
}
@keyframes flicker{0%,100%{opacity:0.6}50%{opacity:1}}
.bar-wrap{
  width:300px;height:8px;background:rgba(255,255,255,0.08);
  border-radius:20px;overflow:hidden;box-shadow:0 0 20px rgba(0,229,255,0.3);
}
.bar-fill{
  height:100%;width:0;border-radius:20px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta),var(--gold));
  background-size:200% 100%;animation:shimmer 1.5s linear infinite;transition:width 0.08s linear;
}
@keyframes shimmer{to{background-position:-200% 0}}

/* ── BACKGROUND ── */
#bg{position:fixed;inset:0;z-index:0}
#particles{position:fixed;inset:0;z-index:10;pointer-events:none}

/* ── PARTICLES ── */
.particle{
  position:absolute;border-radius:50%;pointer-events:none;
  animation:particleBurst 0.7s cubic-bezier(0,0.6,0.4,1) forwards;
  box-shadow:0 0 6px currentColor;
}
@keyframes particleBurst{
  0%{transform:translate(0,0) scale(1);opacity:1}
  60%{opacity:0.9}
  100%{transform:translate(var(--dx),var(--dy)) scale(0);opacity:0}
}
.float-score{
  position:absolute;pointer-events:none;font-weight:900;font-size:18px;
  color:var(--gold);text-shadow:0 0 12px var(--gold),0 0 24px var(--orange);
  animation:floatUp 0.9s ease-out forwards;z-index:11;letter-spacing:1px;
}
@keyframes floatUp{
  0%{transform:translateY(0) scale(0.5);opacity:1}
  40%{transform:translateY(-30px) scale(1.3);opacity:1}
  100%{transform:translateY(-70px) scale(0.8);opacity:0}
}

/* ══════════════════════════════════
   LEVEL SELECT SCREEN
══════════════════════════════════ */
#level-select{
  position:fixed;inset:0;z-index:100;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 30%,#12173a 0%,#050816 100%);
  padding:20px;
  transition:opacity 0.5s,visibility 0.5s;
}
#level-select.hide{opacity:0;visibility:hidden;pointer-events:none}

.ls-title{
  font-size:clamp(28px,6vw,48px);font-weight:900;letter-spacing:2px;
  background:linear-gradient(135deg,#fff 0%,var(--cyan) 30%,var(--magenta) 70%,var(--gold) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  filter:drop-shadow(0 0 20px rgba(0,229,255,0.5));
  margin-bottom:6px;text-align:center;
      text-shadow: 2px 2px 0px #ff6b6b, 4px 4px 0px #4ecdc4, 12px 12px 20px rgba(0, 0, 0, 0.5);
    animation: titlePulse 2s ease-in-out infinite;
}
.ls-sub{
  font-size:13px;letter-spacing:3px;color:#8899cc;text-transform:uppercase;
  margin-bottom:32px;text-align:center;
}

.ls-cards{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  max-width:620px;width:100%;margin-bottom:28px;
}
.ls-card{
  position:relative;border-radius:20px;padding:20px 14px 18px;
  background:rgba(255,255,255,0.04);
  border:2px solid rgba(255,255,255,0.1);
  cursor:pointer;
  transition:transform 0.22s cubic-bezier(0.34,1.56,0.64,1),
             box-shadow 0.22s,border-color 0.22s,background 0.22s;
  text-align:center;overflow:hidden;
}
.ls-card::before{
  content:'';position:absolute;inset:0;border-radius:18px;
  opacity:0;transition:opacity 0.3s;
}
.ls-card.easy::before  {background:radial-gradient(ellipse at 50% 0%,rgba(105,240,174,0.2) 0%,transparent 70%)}
.ls-card.medium::before{background:radial-gradient(ellipse at 50% 0%,rgba(0,229,255,0.2) 0%,transparent 70%)}
.ls-card.hard::before  {background:radial-gradient(ellipse at 50% 0%,rgba(224,64,251,0.2) 0%,transparent 70%)}
.ls-card.extreme::before{background:radial-gradient(ellipse at 50% 0%,rgba(255,100,0,0.25) 0%,transparent 70%)}
.ls-card.legend::before{background:radial-gradient(ellipse at 50% 0%,rgba(255,215,64,0.25) 0%,transparent 70%)}
.ls-card.cosmic::before{background:radial-gradient(ellipse at 50% 0%,rgba(255,255,255,0.15) 0%,transparent 70%)}

.ls-card:hover,.ls-card.selected{
  transform:translateY(-6px) scale(1.04);
}
.ls-card.easy:hover,.ls-card.easy.selected   {border-color:var(--green);box-shadow:0 0 30px rgba(105,240,174,0.4),0 8px 30px rgba(0,0,0,0.5)}
.ls-card.medium:hover,.ls-card.medium.selected{border-color:var(--cyan);box-shadow:0 0 30px rgba(0,229,255,0.4),0 8px 30px rgba(0,0,0,0.5)}
.ls-card.hard:hover,.ls-card.hard.selected   {border-color:var(--magenta);box-shadow:0 0 30px rgba(224,64,251,0.4),0 8px 30px rgba(0,0,0,0.5)}
.ls-card.extreme:hover,.ls-card.extreme.selected{border-color:var(--orange);box-shadow:0 0 30px rgba(255,145,0,0.45),0 8px 30px rgba(0,0,0,0.5)}
.ls-card.legend:hover,.ls-card.legend.selected{border-color:var(--gold);box-shadow:0 0 30px rgba(255,215,64,0.45),0 8px 30px rgba(0,0,0,0.5)}
.ls-card.cosmic:hover,.ls-card.cosmic.selected{border-color:#fff;box-shadow:0 0 30px rgba(255,255,255,0.35),0 8px 30px rgba(0,0,0,0.5)}
.ls-card:hover::before,.ls-card.selected::before{opacity:1}

.ls-card.selected::after{
  content:'✓';position:absolute;top:8px;right:10px;
  font-size:13px;font-weight:900;opacity:0.9;
}
.ls-card.easy.selected::after{color:var(--green)}
.ls-card.medium.selected::after{color:var(--cyan)}
.ls-card.hard.selected::after{color:var(--magenta)}
.ls-card.extreme.selected::after{color:var(--orange)}
.ls-card.legend.selected::after{color:var(--gold)}
.ls-card.cosmic.selected::after{color:#fff}

.ls-icon{font-size:32px;margin-bottom:8px;display:block;line-height:1}
.ls-name{font-size:14px;font-weight:800;letter-spacing:1px;margin-bottom:5px;text-transform:uppercase}
.ls-card.easy   .ls-name{color:var(--green)}
.ls-card.medium .ls-name{color:var(--cyan)}
.ls-card.hard   .ls-name{color:var(--magenta)}
.ls-card.extreme .ls-name{color:var(--orange)}
.ls-card.legend .ls-name{color:var(--gold)}
.ls-card.cosmic .ls-name{color:#fff}
.ls-desc{font-size:11px;color:#8899cc;line-height:1.5;margin-bottom:8px}
.ls-badge{
  display:inline-block;padding:3px 10px;border-radius:20px;
  font-size:10px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
}
.ls-card.easy   .ls-badge{background:rgba(105,240,174,0.15);color:var(--green)}
.ls-card.medium .ls-badge{background:rgba(0,229,255,0.15);color:var(--cyan)}
.ls-card.hard   .ls-badge{background:rgba(224,64,251,0.15);color:var(--magenta)}
.ls-card.extreme .ls-badge{background:rgba(255,145,0,0.15);color:var(--orange)}
.ls-card.legend .ls-badge{background:rgba(255,215,64,0.15);color:var(--gold)}
.ls-card.cosmic .ls-badge{background:rgba(255,255,255,0.1);color:#fff}

.ls-start{
  padding:16px 60px;font-size:17px;font-weight:900;letter-spacing:3px;
  text-transform:uppercase;border:none;border-radius:50px;cursor:pointer;
  background:linear-gradient(135deg,var(--cyan),var(--magenta));
  color:#fff;box-shadow:0 0 30px rgba(0,229,255,0.4),0 0 60px rgba(224,64,251,0.3);
  transition:transform 0.2s,box-shadow 0.2s;
  position:relative;overflow:hidden;


      box-shadow:
        0 10px 30px color-mix(in srgb, var(--magenta) 50%, transparent),
        0 5px 0 color-mix(in srgb, var(--orange) 70%, black);

        
}
.ls-start::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,0.15),transparent);
  border-radius:50px;
}
.ls-start:hover{transform:scale(1.06);box-shadow:0 0 50px rgba(0,229,255,0.6),0 0 80px rgba(224,64,251,0.4)}
.ls-start:active{transform:scale(0.96)}

/* hi-score pill */
.ls-hiscore{
  margin-top:18px;font-size:12px;color:#6677aa;letter-spacing:2px;text-transform:uppercase;
}
.ls-hiscore span{color:var(--gold);font-weight:700}

/* ══════════════════════════════════
   GAME SCREEN
══════════════════════════════════ */
#game{
  display:none;position:relative;z-index:2;padding:8px 8px 4px;
  max-width:620px;margin:0 auto;margin-top: 1%;
}
#game.show{display:block}

/* Title */
.game-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:4px;padding:0 2px;
}
h1{
  font-size:clamp(20px,4vw,28px);font-weight:900;letter-spacing:1px;
  background:linear-gradient(135deg,#fff 0%,var(--cyan) 30%,var(--magenta) 60%,var(--gold) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  filter:drop-shadow(0 0 14px rgba(0,229,255,0.5));
}
.diff-pill{
  padding:10px 14px;border-radius:20px;font-size:11px;font-weight:800;
  letter-spacing:1.5px;text-transform:uppercase;border:1.5px solid;
  cursor:pointer;transition:all 0.2s;backdrop-filter:blur(8px);
}
.diff-pill:hover{transform:scale(1.05)}

/* ── Top Panel ── */
.top{
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:20px 0 8px;
}
.panel{
  background:var(--panel-bg);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.12);
  padding:8px 14px;border-radius:14px;font-weight:700;font-size:13px;
  letter-spacing:0.5px;
  box-shadow:0 4px 24px rgba(0,0,0,0.4),inset 0 1px 0 rgba(255,255,255,0.05);
  transition:transform 0.2s,box-shadow 0.2s;position:relative;overflow:hidden;
}
.panel::after{
  content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;
  background:conic-gradient(from 0deg,transparent,rgba(255,255,255,0.03),transparent,rgba(255,255,255,0.04),transparent);
  animation:panelShine 6s linear infinite;pointer-events:none;
}
@keyframes panelShine{to{transform:rotate(360deg)}}
.panel span{color:var(--cyan);font-weight:900;font-size:16px;transition:all 0.25s}
.panel.pulse span{animation:scorePop 0.4s ease-out}
@keyframes scorePop{
  0%{transform:scale(1)}
  40%{transform:scale(1.5);color:var(--gold)}
  100%{transform:scale(1)}
}

/* ── Combo ── */
#combo-display{
  text-align:center;height:26px;font-weight:900;font-size:15px;letter-spacing:2px;
  color:var(--magenta);text-shadow:0 0 16px var(--magenta);
  transition:all 0.2s;opacity:0;transform:translateY(8px);
}
#combo-display.active{opacity:1;transform:translateY(0);animation:comboBounce 0.5s ease-out}
@keyframes comboBounce{
  0%{transform:scale(0.3);opacity:0}50%{transform:scale(1.3)}100%{transform:scale(1);opacity:1}
}

/* ── Board ── */
#board-wrap{
  position:relative;margin:auto;width:min(92vw,540px);
  border-radius:22px;padding:8px;
  background:rgba(255,255,255,0.03);
  border:2px solid rgba(255,255,255,0.1);
  box-shadow:0 0 40px rgba(100,100,255,0.15),0 0 80px rgba(200,100,255,0.08),inset 0 0 60px rgba(0,0,0,0.3);
}
#board{display:grid;grid-template-columns:repeat(8,1fr);gap:5px}
.cell{
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  font-size:clamp(24px,4.5vw,36px);border-radius:14px;
  background:rgba(255,255,255,0.05);
  cursor:pointer;
  transition:transform 0.18s cubic-bezier(0.34,1.56,0.64,1),box-shadow 0.18s,background 0.18s;
  position:relative;border:2px solid transparent;
}
.cell:hover{transform:scale(1.12);background:rgba(255,255,255,0.12);box-shadow:0 0 22px rgba(255,255,255,0.2);z-index:2}
.cell:active{transform:scale(0.9);transition:transform 0.08s}
.cell.selected{
  border-color:#fff;
  box-shadow:0 0 28px rgba(255,255,255,0.7),0 0 50px rgba(0,229,255,0.6);
  animation:selectedPulse 0.7s ease-in-out infinite;z-index:3;
  background:rgba(255,255,255,0.18);
}
@keyframes selectedPulse{
  0%,100%{box-shadow:0 0 28px rgba(255,255,255,0.7),0 0 50px rgba(0,229,255,0.6)}
  50%{box-shadow:0 0 40px rgba(255,255,255,1),0 0 70px rgba(0,229,255,0.9)}
}
.cell.matched{animation:popMatch 0.35s ease-out}
@keyframes popMatch{
  0%{transform:scale(1)}30%{transform:scale(1.45);filter:brightness(2)}
  100%{transform:scale(0);opacity:0;filter:brightness(3)}
}
.cell.drop-in{animation:dropIn 0.35s cubic-bezier(0.34,1.56,0.64,1)}
@keyframes dropIn{
  0%{transform:translateY(-60px);opacity:0}60%{opacity:1}100%{transform:translateY(0);opacity:1}
}
#board.shake{animation:boardShake 0.35s ease-out}
@keyframes boardShake{
  0%,100%{transform:translateX(0)}15%{transform:translateX(-6px)}30%{transform:translateX(6px)}
  45%{transform:translateX(-5px)}60%{transform:translateX(5px)}75%{transform:translateX(-2px)}90%{transform:translateX(2px)}
}

/* ── Message ── */
#msg{text-align:center;font-size:18px;height:28px;margin-top:6px;color:#ffe66d;
  font-weight:700;letter-spacing:1px;text-shadow:0 0 14px rgba(255,230,100,0.6);transition:all 0.3s}

/* ── Level Up ── */
#levelup{
  position:fixed;inset:0;display:none;justify-content:center;align-items:center;
  flex-direction:column;gap:12px;
  background:rgba(0,0,0,0.75);font-size:clamp(38px,9vw,65px);font-weight:900;
  z-index:20;letter-spacing:4px;
  animation:zoomIn 0.5s cubic-bezier(0.34,1.56,0.64,1);
  text-shadow:0 0 40px var(--gold),0 0 80px var(--magenta),0 0 120px var(--cyan);
  color:#fff;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
#levelup.show{display:flex}
#levelup .lu-sub{font-size:clamp(14px,3vw,20px);letter-spacing:3px;color:#aaccff;font-weight:600}
@keyframes zoomIn{from{transform:scale(0.1);opacity:0}to{transform:scale(1);opacity:1}}

/* ── Progress ── */
#progress-wrap{
  width:min(92vw,540px);margin:6px auto 0;
  display:flex;align-items:center;gap:10px;
}
#progress-track{
  flex:1;height:7px;background:rgba(255,255,255,0.08);
  border-radius:10px;overflow:hidden;
}
#progress-bar{
  height:100%;background:linear-gradient(90deg,var(--cyan),var(--magenta));
  border-radius:10px;transition:width 0.4s ease-out;
  box-shadow:0 0 10px rgba(0,229,255,0.5);
}
#progress-pct{font-size:11px;color:#5566aa;font-weight:700;min-width:30px;text-align:right}

/* decorative orbiting dot on board */
#board-wrap .orbit{
  position:absolute;top:-3px;left:-3px;right:-3px;bottom:-3px;
  border-radius:25px;pointer-events:none;
  border:1.5px solid transparent;
  background:linear-gradient(var(--bg),var(--bg)) padding-box,
             conic-gradient(from 0deg,var(--cyan),var(--magenta),var(--gold),var(--cyan)) border-box;
  animation:orbitSpin 4s linear infinite;opacity:0.5;
}
@keyframes orbitSpin{to{transform:rotate(360deg)}}
@keyframes titlePulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}