@import"https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Space+Grotesk:wght@400;500;700&display=swap";:root{--bg: #0e0b1e;--bg-soft: #161232;--surface: rgba(255, 255, 255, .05);--surface-strong: rgba(255, 255, 255, .09);--border: rgba(255, 255, 255, .12);--text: #f3f0ff;--muted: #a9a3c9;--accent: #7c5cff;--accent-2: #21d4fd;--hot: #ff5d8f;--gold: #ffd166;--good: #3ddc97;--bad: #ff6b6b;--radius: 18px;--shadow: 0 20px 60px -20px rgba(0, 0, 0, .7);--grad: linear-gradient(135deg, var(--accent), var(--accent-2));--grad-hot: linear-gradient(135deg, var(--hot), var(--accent))}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:Space Grotesk,system-ui,sans-serif;background:radial-gradient(1200px 800px at 80% -10%,#2a1b54 0%,transparent 60%),radial-gradient(900px 700px at -10% 110%,#14304a 0%,transparent 55%),var(--bg);color:var(--text);min-height:100%;overflow-x:hidden}h1,h2,h3,.display{font-family:Sora,sans-serif;letter-spacing:-.02em}.bg-orbs{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;overflow:hidden;pointer-events:none}.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55}.orb-1{width:420px;height:420px;background:var(--accent);top:-120px;left:-80px}.orb-2{width:380px;height:380px;background:var(--accent-2);bottom:-120px;right:-60px}.orb-3{width:300px;height:300px;background:var(--hot);top:40%;left:55%;opacity:.35}#app{min-height:100vh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px clamp(16px,5vw,48px);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#0e0b1e8c;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px;cursor:pointer;-webkit-user-select:none;user-select:none}.brand .logo{width:38px;height:38px;border-radius:12px;background:var(--grad);display:grid;place-items:center;font-weight:800;color:#fff;box-shadow:0 8px 24px -6px var(--accent)}.brand .name{font-family:Sora;font-weight:800;font-size:1.15rem}.brand .name span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.topbar-actions{display:flex;align-items:center;gap:10px}.user-chip{display:flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-size:.9rem}.user-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--good)}.view{flex:1;padding:clamp(24px,5vw,56px);max-width:1080px;margin:0 auto;width:100%}.btn{font:inherit;font-weight:600;cursor:pointer;border:1px solid transparent;padding:12px 20px;border-radius:14px;color:var(--text);background:var(--surface-strong);transition:transform .12s ease,box-shadow .2s ease,background .2s ease;display:inline-flex;align-items:center;gap:9px;text-decoration:none}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px -10px var(--accent);border:none}.btn-hot{background:var(--grad-hot);color:#fff;box-shadow:0 12px 30px -10px var(--hot);border:none}.btn-ghost{background:transparent;border:1px solid var(--border)}.btn-ghost:hover{background:var(--surface)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-lg{padding:16px 28px;font-size:1.05rem}.btn-block{width:100%;justify-content:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(20px,3vw,32px);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.hero{text-align:center;padding:clamp(20px,6vh,64px) 0 32px}.hero h1{font-size:clamp(2.4rem,6vw,4.2rem);line-height:1.02;font-weight:800}.hero h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{color:var(--muted);font-size:clamp(1rem,2.2vw,1.25rem);margin-top:18px;max-width:620px;margin-inline:auto}.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:38px}.mode-card{position:relative;overflow:hidden;cursor:pointer;border-radius:var(--radius);padding:26px;min-height:190px;background:var(--surface);border:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between;transition:transform .18s ease,border-color .2s ease,box-shadow .25s ease}.mode-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:0 24px 50px -24px var(--accent)}.mode-card .icon{font-size:2rem}.mode-card h3{font-size:1.3rem;margin-top:8px}.mode-card p{color:var(--muted);font-size:.92rem;margin-top:6px}.mode-card .glow{position:absolute;inset:auto -40% -60% auto;width:220px;height:220px;border-radius:50%;filter:blur(60px);opacity:.35}.mode-card.solo .glow{background:var(--accent-2)}.mode-card.blitz .glow{background:#ffb020}.mode-card.daily .glow{background:var(--gold)}.mode-card.multi .glow{background:var(--hot)}.mode-card.board .glow{background:var(--good)}.game-wrap{max-width:640px;margin:0 auto;text-align:center}.game-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.game-title{font-size:1.6rem;font-weight:800}.range-pill{color:var(--muted);font-size:.92rem;padding:6px 12px;border:1px solid var(--border);border-radius:999px}.gauge{position:relative;height:10px;border-radius:999px;background:var(--surface-strong);overflow:hidden;margin:8px 0 6px}.gauge .lo,.gauge .hi{position:absolute;top:0;bottom:0;background:var(--grad);opacity:.4}.gauge .lo{left:0}.gauge .hi{right:0}.gauge-labels{display:flex;justify-content:space-between;color:var(--muted);font-size:.82rem}.feedback{font-family:Sora;font-weight:800;font-size:clamp(1.6rem,5vw,2.4rem);min-height:1.4em;margin:22px 0;display:flex;align-items:center;justify-content:center;gap:12px}.feedback.higher{color:var(--accent-2)}.feedback.lower{color:var(--hot)}.feedback.correct{color:var(--good)}.feedback .arrow{font-size:1.3em;display:inline-block}.guess-form{display:flex;gap:12px;margin-top:8px}.guess-input{flex:1;font:inherit;font-size:1.5rem;font-family:Sora;text-align:center;font-weight:700;padding:16px;border-radius:16px;color:var(--text);background:var(--surface-strong);border:1px solid var(--border);outline:none;transition:border-color .2s ease,box-shadow .2s ease}.guess-input:focus{border-color:var(--accent);box-shadow:0 0 0 4px #7c5cff2e}.guess-input.shake{animation:none}.stat-row{display:flex;gap:14px;justify-content:center;margin-top:22px;flex-wrap:wrap}.stat{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px 18px;min-width:96px}.stat .label{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}.stat .value{font-family:Sora;font-weight:800;font-size:1.5rem;margin-top:2px}.history{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:20px}.history .chip{padding:6px 12px;border-radius:999px;font-weight:700;font-size:.9rem;border:1px solid var(--border);background:var(--surface);display:inline-flex;align-items:center;gap:6px}.history .chip.higher{color:var(--accent-2)}.history .chip.lower{color:var(--hot)}.history .chip.correct{color:var(--good);border-color:var(--good)}.form-wrap{max-width:420px;margin:4vh auto 0}.tabs{display:flex;gap:6px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:5px;margin-bottom:24px}.tab{flex:1;text-align:center;padding:10px;border-radius:10px;cursor:pointer;color:var(--muted);font-weight:600;transition:.2s}.tab.active{background:var(--grad);color:#fff}.field{margin-bottom:16px;text-align:left}.field label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}.field input{width:100%;font:inherit;padding:13px 14px;border-radius:12px;color:var(--text);background:var(--surface-strong);border:1px solid var(--border);outline:none;transition:.2s}.field input:focus{border-color:var(--accent);box-shadow:0 0 0 4px #7c5cff29}.alert{padding:12px 14px;border-radius:12px;font-size:.9rem;margin-bottom:16px}.alert.error{background:#ff6b6b1f;border:1px solid rgba(255,107,107,.35);color:#ffb4b4}.alert.info{background:#21d4fd1a;border:1px solid rgba(33,212,253,.3);color:#bfeeff}.alert.success{background:#3ddc971f;border:1px solid rgba(61,220,151,.35);color:#b8f3d8}.board-tabs{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}.lb{width:100%;border-collapse:collapse}.lb th,.lb td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--border)}.lb th{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}.lb td.rank{font-family:Sora;font-weight:800;width:56px}.lb tr .medal{font-size:1.1rem}.lb tbody tr{transition:background .2s}.lb tbody tr:hover{background:var(--surface)}.lb .me{background:#7c5cff1f}.mp-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;align-items:start}@media (max-width: 820px){.mp-layout{grid-template-columns:1fr}}.players-list{display:flex;flex-direction:column;gap:10px}.player-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;background:var(--surface);border:1px solid var(--border)}.player-row .av{width:34px;height:34px;border-radius:10px;background:var(--grad);display:grid;place-items:center;font-weight:800;color:#fff}.player-row .meta{flex:1}.player-row .pname{font-weight:700}.player-row .pstate{color:var(--muted);font-size:.82rem}.player-row.solved{border-color:var(--good)}.player-row.host .pname:after{content:" 👑"}.player-row.you{background:#7c5cff1f}.code-badge{font-family:Sora;font-weight:800;letter-spacing:.3em;font-size:1.8rem;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.chat{display:flex;flex-direction:column;height:280px}.chat-log{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:4px}.chat-line{font-size:.88rem}.chat-line b{color:var(--accent-2)}.chat-form{display:flex;gap:8px;margin-top:10px}.chat-form input{flex:1;font:inherit;padding:9px 12px;border-radius:10px;background:var(--surface-strong);border:1px solid var(--border);color:var(--text);outline:none}.muted{color:var(--muted)}.center{text-align:center}.row{display:flex;gap:12px;flex-wrap:wrap}.row.center{justify-content:center}.mt{margin-top:18px}.mt-lg{margin-top:32px}.spacer{flex:1}.hidden{display:none!important}.section-title{font-size:1.5rem;font-weight:800;margin-bottom:6px}.back-link{color:var(--muted);cursor:pointer;display:inline-flex;gap:6px;align-items:center;margin-bottom:18px}.back-link:hover{color:var(--text)}.difficulty{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:18px 0}.diff-chip{padding:10px 18px;border-radius:12px;border:1px solid var(--border);background:var(--surface);cursor:pointer;font-weight:600;transition:.2s}.diff-chip.active{background:var(--grad);color:#fff;border-color:transparent}.confetti{position:fixed;width:10px;height:14px;top:-20px;z-index:50;pointer-events:none;border-radius:2px}.icon-btn{padding:10px 12px;font-size:1.1rem;line-height:1}.trail{font-size:1.6rem;letter-spacing:4px;margin:14px 0 6px}.profile-head{display:flex;align-items:center;gap:16px}.profile-av{width:64px;height:64px;border-radius:18px;background:var(--grad);display:grid;place-items:center;font-family:Sora;font-weight:800;font-size:1.8rem;color:#fff;box-shadow:0 12px 30px -10px var(--accent)}.badges{display:flex;flex-wrap:wrap;gap:10px}.badge{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:14px;background:var(--surface);border:1px solid var(--border);font-weight:600}.badge .bi{font-size:1.3rem}.player-row .pscore{font-family:Sora;font-weight:800;font-size:.95rem;color:var(--gold);white-space:nowrap}.countdown-num{display:inline-block;font-family:Sora;font-weight:800;font-size:clamp(3rem,12vw,5rem);line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}.avatar-picker{display:flex;flex-wrap:wrap;gap:8px}.avatar-opt{font-size:1.4rem;line-height:1;width:46px;height:46px;cursor:pointer;border-radius:12px;background:var(--surface-strong);border:1px solid var(--border);transition:transform .12s ease,border-color .2s ease,background .2s ease}.avatar-opt:hover{transform:translateY(-2px)}.avatar-opt.active{border-color:var(--accent);background:#7c5cff2e}@media (max-width: 640px){.topbar{padding:12px 16px;gap:10px}.brand .name{font-size:1rem}.topbar-actions{gap:6px}.topbar-actions .btn{padding:9px 12px;font-size:.85rem}.user-chip{padding:6px 10px;font-size:.82rem}.guess-input{font-size:1.25rem;padding:13px}.stat{min-width:84px;padding:10px 14px}.stat .value{font-size:1.25rem}.lb th,.lb td{padding:10px 8px;font-size:.9rem}.diff-chip{padding:8px 12px;font-size:.85rem}.avatar-opt{width:42px;height:42px;font-size:1.25rem}}@keyframes shake-kf{0%,to{transform:translate(0)}20%{transform:translate(-10px)}40%{transform:translate(9px)}60%{transform:translate(-7px)}80%{transform:translate(5px)}}.shake{animation:shake-kf .4s ease}