*{box-sizing:border-box}
:root{
 --bg1:#07111f;--bg2:#10223d;--panel:#132744dd;--text:#f4f7fb;
 --red:#ff4057;--yellow:#ffd43b;--blue:#165dff;--slot:#081528;
 --ok:#39d98a;--warn:#ffbf47;--bad:#ff5d73
}
html,body{margin:0;width:100%;height:100%;overflow:hidden}
body{
 font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--text);
 background:
 radial-gradient(circle at 20% 15%,#193f72 0 0,transparent 30%),
 radial-gradient(circle at 85% 80%,#17345f 0 0,transparent 28%),
 linear-gradient(145deg,var(--bg1),var(--bg2));
}
body:before{
 content:"";position:fixed;inset:-50%;pointer-events:none;opacity:.18;
 background:repeating-radial-gradient(circle at center,transparent 0 28px,#ffffff12 29px 30px);
 animation:drift 18s linear infinite
}
@keyframes drift{to{transform:translate3d(4%,3%,0) rotate(4deg)}}
button{font:inherit}
.app{height:100dvh;max-width:950px;margin:auto;padding:10px;display:flex;flex-direction:column;gap:10px}
.topbar{
 display:flex;justify-content:space-between;align-items:center;gap:12px;
 background:var(--panel);backdrop-filter:blur(15px);border:1px solid #ffffff18;
 border-radius:20px;padding:12px 16px;box-shadow:0 15px 35px #0006
}
h1{font-size:clamp(1.1rem,3vw,1.8rem);margin:0 0 3px}
.status{font-size:.9rem;opacity:.85}
.score{display:flex;gap:12px;background:#06101d99;padding:9px 12px;border-radius:14px;font-size:1rem;white-space:nowrap}
.panel{
 margin:auto;width:min(650px,100%);padding:24px;background:var(--panel);
 border:1px solid #ffffff20;border-radius:26px;box-shadow:0 20px 55px #0008;text-align:center
}
.panel h2{font-size:clamp(1.5rem,5vw,2.3rem);margin:0 0 18px}
.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mode-btn{
 min-height:105px;border:0;border-radius:22px;color:white;font-weight:800;
 font-size:1.15rem;cursor:pointer;box-shadow:0 10px 25px #0005;
 transition:.2s transform,.2s filter
}
.mode-btn:hover{transform:translateY(-3px);filter:brightness(1.08)}
.mode-btn:active{transform:scale(.97)}
.mode-btn.red{background:linear-gradient(145deg,#ff5b6e,#bf1735)}
.mode-btn.yellow{background:linear-gradient(145deg,#ffd95d,#d89a00);color:#271d00}
.mode-btn small{font-size:.75rem;font-weight:600;opacity:.8}
.network-setup{margin-top:18px;padding-top:15px;border-top:1px solid #ffffff1f}
.hint{font-size:.82rem;opacity:.75;line-height:1.5}
.hidden{display:none!important}
.game{min-height:0;flex:1;display:flex;flex-direction:column;gap:8px}
.game-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px}
.turn-badge{
 font-weight:900;padding:8px 14px;border-radius:999px;background:#ffffff12;
 box-shadow:inset 0 0 0 1px #ffffff16
}
.toolbar-actions{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.small-btn{
 border:0;padding:7px 10px;border-radius:10px;background:#ffffff17;color:white;
 font-weight:700;cursor:pointer
}
.small-btn.danger{background:#8d2532}
.small-btn.ghost{background:#ffffff0d}
.board-wrap{
 min-height:0;flex:1;width:min(92vw,680px);margin:auto;display:flex;flex-direction:column;
 justify-content:center
}
.column-hints{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;padding:0 10px 6px}
.hint-btn{
 aspect-ratio:1.65;border:0;border-radius:999px;background:#ffffff10;color:#ffffff90;
 cursor:pointer;font-weight:900;transition:.15s
}
.hint-btn.active{background:#ffffff25;color:white;transform:translateY(-2px)}
.hint-btn:disabled{opacity:.25;cursor:not-allowed}
.board{
 position:relative;display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(6,1fr);
 gap:clamp(4px,1vw,9px);padding:clamp(8px,1.8vw,16px);
 background:linear-gradient(160deg,#2470ff,#0b3cae);border-radius:26px;
 box-shadow:inset 0 4px 8px #ffffff28,inset 0 -8px 14px #001d73aa,0 20px 50px #0008;
 aspect-ratio:7/6
}
.cell{
 position:relative;border-radius:50%;background:radial-gradient(circle at 45% 40%,#0d203a,#050b15 70%);
 box-shadow:inset 0 4px 9px #000b,0 1px 1px #ffffff20;overflow:hidden
}
.disc{
 position:absolute;inset:7%;border-radius:50%;transform:translateY(-800%);
 box-shadow:inset 0 5px 7px #ffffff40,inset 0 -8px 13px #0005,0 5px 8px #0007
}
.cell.red .disc{background:radial-gradient(circle at 35% 30%,#ff8793,var(--red) 45%,#b70f31)}
.cell.yellow .disc{background:radial-gradient(circle at 35% 30%,#fff2a0,var(--yellow) 45%,#c98d00)}
.cell.filled .disc{animation:drop .42s cubic-bezier(.2,.75,.28,1.2) forwards}
@keyframes drop{to{transform:translateY(0)}}
.cell.win{animation:winpulse .7s ease-in-out infinite alternate}
@keyframes winpulse{to{transform:scale(.9);filter:brightness(1.6);box-shadow:0 0 24px #fff}}
.legend{display:flex;justify-content:center;gap:20px;align-items:center;font-size:.85rem}
.dot{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:3px}
.red-dot{background:var(--red)}.yellow-dot{background:var(--yellow)}
.sync{margin-left:auto;color:var(--ok)}.sync.working{color:var(--warn)}.sync.bad{color:var(--bad)}
.toast{
 position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);
 z-index:20;padding:18px 28px;border-radius:22px;background:#07111fee;border:1px solid #ffffff25;
 font-weight:900;font-size:clamp(1.2rem,5vw,2rem);box-shadow:0 20px 80px #000c;
 animation:pop .25s ease
}
@keyframes pop{from{transform:translate(-50%,-50%) scale(.6);opacity:0}}
#confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:30}
@media(max-width:620px){
 .app{padding:6px}.topbar{padding:9px 10px;border-radius:15px}
 .topbar{align-items:flex-start}.score{font-size:.85rem;gap:7px;padding:7px}
 .game-toolbar{align-items:flex-start}.small-btn{font-size:.72rem;padding:6px 8px}
 .board{border-radius:18px}.column-hints{gap:3px;padding-left:6px;padding-right:6px}
 .mode-grid{grid-template-columns:1fr}.panel{padding:18px}
}
@media(max-height:620px) and (orientation:landscape){
 .app{max-width:1100px}.topbar{padding:6px 12px}.topbar h1{font-size:1rem}
 .game{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto 1fr auto}
 .game-toolbar{grid-column:1/3}.board-wrap{grid-column:1/2;width:min(68vh,680px)}
 .legend{grid-column:2/3;grid-row:2/3;flex-direction:column;padding:8px}
}