/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow:hidden;touch-action:none;-webkit-tap-highlight-color:transparent}
body{font-family:'Quicksand',sans-serif;background:#07071a;color:#fff;user-select:none;-webkit-user-select:none}

/* ===== APP CONTAINER ===== */
#app{position:relative;width:100%;height:100%;overflow:hidden;background:linear-gradient(160deg,#07071a 0%,#0d0b2e 40%,#121035 70%,#0a0a1a 100%)}

/* ===== SUBTLE GRID BG ===== */
.bg-grid{position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);
background-size:40px 40px;pointer-events:none;z-index:0}

/* ===== FLOATING ORBS ===== */
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.35;pointer-events:none;z-index:0}
.o1{width:350px;height:350px;background:radial-gradient(circle,#7c3aed,transparent 70%);top:-100px;left:-80px;animation:orbA 20s ease-in-out infinite alternate}
.o2{width:280px;height:280px;background:radial-gradient(circle,#06b6d4,transparent 70%);bottom:5%;right:-60px;animation:orbB 24s ease-in-out infinite alternate}
.o3{width:220px;height:220px;background:radial-gradient(circle,#ec4899,transparent 70%);bottom:-40px;left:25%;animation:orbC 18s ease-in-out infinite alternate}
@keyframes orbA{to{transform:translate(80px,100px) scale(1.15)}}
@keyframes orbB{to{transform:translate(-60px,-70px) scale(1.2)}}
@keyframes orbC{to{transform:translate(50px,-50px) scale(.85)}}

/* ===== SCREENS ===== */
.scr{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:1;opacity:0;pointer-events:none;transition:opacity .4s ease}
.scr.active{opacity:1;pointer-events:auto}

/* ===== GLASSMORPHISM CARD ===== */
.card{background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.03));backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.12);border-radius:28px;padding:36px 30px;text-align:center;width:min(360px,88vw);box-shadow:0 12px 40px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.1)}

/* ===== BUTTONS ===== */
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:15px 0;border:none;border-radius:16px;font-family:'Quicksand',sans-serif;font-size:15px;font-weight:700;cursor:pointer;letter-spacing:.5px;transition:transform .12s,box-shadow .15s;margin-top:12px}
.btn:active{transform:scale(.96)}
.gl{background:linear-gradient(135deg,#7c3aed,#a855f7,#7c3aed);background-size:200% 200%;color:#fff;box-shadow:0 4px 24px rgba(124,58,237,.45);animation:glShine 3s ease infinite}
@keyframes glShine{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.gh{background:rgba(255,255,255,.07);color:rgba(255,255,255,.85);border:1px solid rgba(255,255,255,.12)}
.gh:active{background:rgba(255,255,255,.14)}
.btn-ico{background:none;border:none;color:rgba(255,255,255,.6);cursor:pointer;padding:8px;transition:color .15s}
.btn-ico:active{color:#fff}

/* ===== START SCREEN ===== */
.start-deco{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.deco-block{position:absolute;border-radius:6px;opacity:.12;animation:decoFloat 12s ease-in-out infinite alternate}
.db1{width:40px;height:40px;background:#ef4444;top:12%;left:8%;animation-delay:0s}
.db2{width:30px;height:30px;background:#3b82f6;top:20%;right:12%;animation-delay:-2s;animation-duration:15s}
.db3{width:35px;height:35px;background:#22c55e;bottom:25%;left:15%;animation-delay:-4s;animation-duration:10s}
.db4{width:25px;height:25px;background:#f59e0b;bottom:18%;right:10%;animation-delay:-6s}
.db5{width:28px;height:28px;background:#a855f7;top:35%;left:5%;animation-delay:-3s;animation-duration:14s}
.db6{width:32px;height:32px;background:#ec4899;top:8%;right:25%;animation-delay:-5s;animation-duration:11s}
@keyframes decoFloat{0%{transform:translateY(0) rotate(0deg)}100%{transform:translateY(-30px) rotate(15deg)}}

.logo-box{text-align:center;margin-bottom:40px;position:relative;z-index:1}
.logo-icon{margin:0 auto 16px;width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,rgba(124,58,237,.3),rgba(168,85,247,.15));border:1px solid rgba(168,85,247,.3);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 30px rgba(124,58,237,.3)}
.li-grid{display:grid;grid-template-columns:repeat(3,16px);grid-template-rows:repeat(3,16px);gap:2px}
.li-c{border-radius:3px;display:block}
.logo{font-family:'Lilita One',cursive;font-size:56px;letter-spacing:1px;line-height:1.1}
.logo-b{color:#fff;text-shadow:0 2px 20px rgba(255,255,255,.2)}
.logo-p{background:linear-gradient(135deg,#a855f7,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.sub{font-size:13px;color:rgba(255,255,255,.4);margin-top:6px;letter-spacing:2px;text-transform:uppercase}
.s-btns{width:min(260px,70vw);position:relative;z-index:1}
.btn-play{font-size:18px;padding:16px 0;border-radius:20px}
.btn-play-ico{width:18px;height:18px}

.home-stats{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:28px;padding:10px 24px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);position:relative;z-index:1}
.hs-item{font-size:14px;font-weight:600;color:rgba(255,255,255,.6)}
.hs-val{color:#a855f7;font-weight:700}
.hs-divider{width:1px;height:18px;background:rgba(255,255,255,.12)}

/* ===== INSTALL BUTTON ===== */
.install-btn{width:min(260px,70vw);margin-top:12px;position:relative;z-index:1;font-size:14px;padding:12px 0}

/* ===== COIN ICON ===== */
.coin-ico{color:#facc15;font-size:1.1em}
.coin-ico.sm{font-size:.8em;margin-left:1px}

/* ===== TUTORIAL ===== */
.tut-card h2{margin-bottom:18px;font-size:22px;font-family:'Lilita One',cursive}
.tut-ol{text-align:left;padding-left:20px;font-size:14px;line-height:2;color:rgba(255,255,255,.75)}
.tut-ol b{color:#a855f7}

/* ===== HUD ===== */
.hud{display:flex;align-items:flex-start;justify-content:space-between;padding:10px 16px 4px;width:100%;position:relative;z-index:2}
.hud-lbl{font-size:9px;letter-spacing:2px;color:rgba(255,255,255,.35);text-transform:uppercase}
.hud-num{font-family:'Lilita One',cursive;font-size:24px;line-height:1.2}
.hud-right{text-align:right}
.coin-hud{font-size:13px;font-weight:700;margin-bottom:2px}
.coin-hud .coin-ico{margin-right:2px}
.combo-tag{position:absolute;left:50%;top:8px;transform:translateX(-50%);font-family:'Lilita One',cursive;font-size:20px;color:#facc15;opacity:0;transition:opacity .3s;text-shadow:0 0 16px rgba(250,204,21,.7)}
.combo-tag.show{opacity:1;animation:comboPop .5s ease}
@keyframes comboPop{0%{transform:translateX(-50%) scale(.5)}60%{transform:translateX(-50%) scale(1.2)}100%{transform:translateX(-50%) scale(1)}}

/* ===== BOARD ===== */
#brd-wrap{position:relative;width:min(92vw,400px);aspect-ratio:1/1;margin:4px auto 0;border-radius:18px;background:linear-gradient(145deg,rgba(30,25,70,.7),rgba(15,12,45,.9));border:1px solid rgba(168,85,247,.2);box-shadow:0 4px 30px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.06);padding:4px}
#brd{display:grid;grid-template-columns:repeat(10,1fr);grid-template-rows:repeat(10,1fr);gap:2px;width:100%;height:100%;border-radius:14px;overflow:hidden}
#fx{position:absolute;inset:0;pointer-events:none;z-index:5}

/* Board cells */
.cell{border-radius:4px;background:rgba(255,255,255,.04);position:relative;transition:background .12s,transform .15s;border:1px solid rgba(255,255,255,.02)}
.cell.filled{box-shadow:inset 0 -2px 4px rgba(0,0,0,.3);border-color:transparent}
.cell.filled::after{content:'';position:absolute;inset:2px 2px auto 2px;height:35%;border-radius:3px 3px 6px 6px;background:linear-gradient(180deg,rgba(255,255,255,.4),transparent);pointer-events:none}
.cell.ghost{outline:2px solid rgba(168,85,247,.5);outline-offset:-1px;z-index:1;background:rgba(168,85,247,.1)}
.cell.ghost-bad{outline-color:rgba(239,68,68,.5);background:rgba(239,68,68,.08)}

/* ===== COLORS ===== */
.c0{background:#ef4444}.c1{background:#3b82f6}.c2{background:#22c55e}.c3{background:#f59e0b}.c4{background:#a855f7}

/* ===== TRAY ===== */
#tray{display:flex;justify-content:center;gap:12px;padding:8px 12px 4px;min-height:76px;align-items:center}
.piece{position:relative;display:grid;gap:1px;cursor:grab;touch-action:none;transition:transform .15s;flex-shrink:0;padding:4px;border-radius:8px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.piece:active{cursor:grabbing}
.piece .pc{border-radius:3px;position:relative}
.piece .pc.filled::after{content:'';position:absolute;inset:1px 1px auto 1px;height:35%;border-radius:2px 2px 4px 4px;background:linear-gradient(180deg,rgba(255,255,255,.35),transparent);pointer-events:none}

/* Rotation indicator */
.piece .rotate-hint{position:absolute;top:-2px;right:-2px;width:16px;height:16px;border-radius:50%;background:rgba(168,85,247,.4);display:flex;align-items:center;justify-content:center;pointer-events:none;opacity:.7;transition:opacity .2s}
.piece .rotate-hint svg{width:10px;height:10px}
.piece:hover .rotate-hint{opacity:1}

/* Dragging piece */
.piece.dragging{position:fixed;z-index:100;pointer-events:none;opacity:.85;transform:scale(1.1);transition:none;background:none;border-color:transparent;padding:0}

/* ===== POWER-UP BAR ===== */
.pu-bar{display:flex;justify-content:center;gap:6px;padding:4px 10px}
.pu-btn{display:flex;flex-direction:column;align-items:center;gap:1px;background:linear-gradient(145deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:6px 10px 5px;color:#fff;cursor:pointer;font-family:'Quicksand',sans-serif;transition:transform .12s,background .15s,border-color .15s;min-width:78px;position:relative}
.pu-btn:active{transform:scale(.94)}
.pu-btn.active-pu{background:rgba(124,58,237,.25);border-color:#a855f7;box-shadow:0 0 16px rgba(124,58,237,.35)}
.pu-btn:disabled{opacity:.35;cursor:default}
.pu-icon{font-size:18px;line-height:1}
.pu-name{font-size:9px;font-weight:700;letter-spacing:.5px}
.pu-cost{font-size:9px;color:rgba(255,255,255,.4)}

/* Power-up overlay */
.pu-ov{position:absolute;inset:0;z-index:10;cursor:crosshair;border-radius:14px;background:rgba(124,58,237,.05)}
.pu-ov.hide{display:none}

/* ===== FOOTER ===== */
.foot{padding:2px 16px 10px;display:flex;justify-content:flex-end;width:100%}
.menu-btn{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center}

/* ===== GAME OVER ===== */
.over-card{padding:32px 28px}
.over-t{font-family:'Lilita One',cursive;font-size:32px;margin-bottom:14px;background:linear-gradient(135deg,#f472b6,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.over-sc{margin-bottom:10px}
.over-lbl{font-size:10px;letter-spacing:2px;color:rgba(255,255,255,.35)}
.over-v{font-family:'Lilita One',cursive;font-size:48px;color:#a855f7}
.over-coins{font-size:14px;margin:8px 0;color:#facc15}
.over-best-box{margin-bottom:6px}
.new-badge{display:inline-block;background:linear-gradient(135deg,#f59e0b,#ef4444);padding:5px 16px;border-radius:20px;font-size:11px;font-weight:700;letter-spacing:1px;margin-bottom:6px;box-shadow:0 2px 12px rgba(239,68,68,.3)}
.over-blbl{font-size:13px;color:rgba(255,255,255,.4)}
.over-btns .btn{font-size:14px;padding:12px 0}

/* ===== PAUSE ===== */
.pause-card h2{margin-bottom:18px;font-family:'Lilita One',cursive;font-size:28px}

/* ===== PARTICLES ===== */
.particle{position:absolute;width:8px;height:8px;border-radius:50%;pointer-events:none;z-index:10;animation:particleFly .55s ease-out forwards}
@keyframes particleFly{0%{opacity:1;transform:translate(0,0) scale(1)}100%{opacity:0;transform:translate(var(--tx),var(--ty)) scale(0)}}

/* Pop flash on cell */
.cell.pop-flash{animation:popFlash .3s ease-out}
@keyframes popFlash{0%{transform:scale(1.3);filter:brightness(2)}100%{transform:scale(1);filter:brightness(1)}}

/* Score float */
.score-float{position:absolute;font-family:'Lilita One',cursive;font-size:18px;color:#facc15;pointer-events:none;z-index:20;animation:floatUp .8s ease-out forwards;text-shadow:0 0 10px rgba(250,204,21,.6)}
@keyframes floatUp{0%{opacity:1;transform:translateY(0) scale(1)}100%{opacity:0;transform:translateY(-40px) scale(.7)}}

/* ===== POPUPS ===== */
#popups{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:50;pointer-events:none}
.popup-msg{font-family:'Lilita One',cursive;font-size:28px;color:#fff;text-shadow:0 0 24px rgba(124,58,237,.8);animation:popupAnim .9s ease-out forwards;white-space:nowrap}
@keyframes popupAnim{0%{opacity:0;transform:scale(.4)}20%{opacity:1;transform:scale(1.15)}40%{transform:scale(1)}80%{opacity:1}100%{opacity:0;transform:translateY(-20px)}}

/* ===== RESPONSIVE ===== */
@media(max-height:700px){
  .hud{padding:6px 12px 2px}
  .hud-num{font-size:20px}
  #brd-wrap{width:min(86vw,360px)}
  #tray{min-height:60px;padding:4px 8px 2px}
  .pu-bar{padding:2px 6px}
  .pu-btn{padding:4px 8px 3px;min-width:68px}
  .foot{padding:2px 12px 6px}
}
@media(max-height:600px){
  #brd-wrap{width:min(76vw,310px)}
  .logo{font-size:42px}
  .logo-icon{width:56px;height:56px;border-radius:16px}
  .li-grid{grid-template-columns:repeat(3,12px);grid-template-rows:repeat(3,12px)}
}

/* ===== GAME SCREEN LAYOUT ===== */
#s-game{justify-content:flex-start}
#s-game.active{display:flex}