:root{--bg:#f8fafc;--bg-soft:#f1f5f9;--panel:#ffffffa6;--text:#0f172a;--muted:#64748b;--accent:#0284c7;--accent-2:#7c3aed;--border:#00000014;--shadow:0 10px 30px #0000000d;--card-glow:#00000008;--kbd-bg:#0000000d}[data-theme=dark]{--bg:#0f172a;--bg-soft:#1e293b;--panel:#1e293b73;--text:#f8fafc;--muted:#94a3b8;--accent:#38bdf8;--accent-2:#a78bfa;--border:#ffffff14;--shadow:0 10px 30px #00000040;--card-glow:#ffffff0d;--kbd-bg:#0f172ab3}html,body{height:100%}body{color:var(--text);background:linear-gradient(135deg, var(--bg-soft) 0%, var(--bg) 100%);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.container{max-width:960px;margin:0 auto;padding:24px}.header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 0 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var(--card-glow) 80% 100%);pointer-events:none;animation:8s linear infinite spin;position:absolute;inset:-50%;transform:rotate(0)}@keyframes spin{to{transform:rotate(360deg)}}.card-title{letter-spacing:.05em;text-transform:uppercase;margin-bottom:10px;font-size:1.25rem;font-weight:700}.card-desc{color:var(--muted);margin-bottom:24px;font-size:.95rem;line-height:1.6}.card-cta{color:var(--accent);align-items:center;gap:6px;font-size:.95rem;font-weight:600;display:inline-flex}.guide{background:var(--panel);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:16px;padding:32px}.guide h3{text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin:0 0 20px;font-size:1.1rem}.guide ul{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.guide li{color:var(--muted);align-items:center;gap:12px;font-size:.95rem;display:flex}kbd{text-align:center;background:var(--kbd-bg);border:1px solid var(--border);min-width:36px;color:var(--text);border-bottom-width:2px;border-radius:6px;padding:6px 10px;font-size:.85rem;font-weight:600}.footer{color:var(--muted);border-top:1px solid var(--border);justify-content:center;align-items:center;gap:12px;margin-top:40px;padding:24px 0;font-size:.9rem;display:flex}.footer a{color:var(--accent);font-weight:500;text-decoration:none;transition:color .15s}.footer a:hover{color:var(--accent-2)}.footer .dot{opacity:.4}@media (width<=520px){.brand{font-size:20px}.hero-title{font-size:2rem}.nav{flex-direction:column;align-items:flex-end;gap:8px}}.lobby-grid{grid-template-columns:1fr 340px;align-items:stretch;gap:24px;margin-top:10px;display:grid}.chat-panel{flex-direction:column;height:520px;padding:20px;display:flex}.chat-messages{border:1px inset var(--border);background:#00000026;border-radius:8px;flex:1;margin-top:4px;margin-bottom:16px;padding:16px;overflow-y:auto}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-thumb{background:var(--muted);border-radius:3px}.chat-msg{word-break:break-all;margin-bottom:10px;font-size:.95rem;line-height:1.4}.chat-msg .system{color:var(--accent-2);margin-right:4px;font-weight:700}.chat-msg .user{color:var(--accent);margin-right:4px;font-weight:700}.chat-input-group{gap:8px;display:flex}.input-box{background:var(--kbd-bg);border:1px solid var(--border);color:var(--text);border-radius:8px;flex:1;padding:12px 16px;font-family:inherit;font-size:.95rem;transition:border-color .2s}.chat-scope{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 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p{color:var(--muted);margin:0;font-size:.9rem;line-height:1.5}.join-group{flex-direction:column;gap:10px;margin-top:4px;display:flex}.join-group[hidden]{display:none}.room-mode-back{border:1px solid var(--border);width:32px;height:32px;color:var(--muted);cursor:pointer;font:inherit;background:0 0;border-radius:6px;align-self:flex-start;padding:0;font-size:1.1rem;line-height:1}.room-mode-back:hover{border-color:var(--accent);color:var(--text)}.room-mode-back:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.difficulty-selector{border:0;margin:0;padding:0}.difficulty-selector legend{color:var(--muted);margin-bottom:6px;font-size:.8rem;font-weight:600}.difficulty-options{border:1px solid var(--border);background:var(--kbd-bg);border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:4px;display:grid}.difficulty-option{cursor:pointer;min-width:0;position:relative}.difficulty-option 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var(--border);background:var(--kbd-bg);border-radius:8px;flex-direction:column;gap:8px;margin-top:12px;padding:12px;display:flex}.room-status[hidden]{display:none}.room-status-row{color:var(--muted);justify-content:space-between;align-items:center;gap:12px;font-size:.85rem;display:flex}.room-status-row strong{color:var(--text);letter-spacing:.06em;font-size:.95rem}.room-code-group{align-items:center;gap:8px;display:inline-flex}.room-copy-btn{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;font:inherit;border-radius:6px;padding:4px 8px;font-size:.75rem}.room-copy-btn:hover{border-color:var(--accent)}@media (width<=768px){.lobby-grid{grid-template-columns:1fr}}.setup-container{background:var(--panel);border:1px solid var(--border);max-width:440px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);border-radius:16px;margin:32px auto 0;padding:24px;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s}.setup-container:hover{transform:translateY(-2px);box-shadow:0 20px 40px #00000014}[data-theme=dark] .setup-container:hover{box-shadow:0 20px 40px #0000004d}.nickname-form{flex-direction:column;gap:16px;display:flex}.input-wrapper{align-items:center;width:100%;display:flex;position:relative}.input-wrapper .input-icon{color:var(--muted);pointer-events:none;justify-content:center;align-items:center;transition:color .2s;display:flex;position:absolute;left:16px}.input-wrapper .input-box{background:var(--bg-soft);border:1px solid var(--border);width:100%;height:48px;color:var(--text);box-sizing:border-box;border-radius:10px;padding:0 16px 0 48px;font-family:inherit;font-size:.95rem;transition:border-color .2s,box-shadow .2s}.input-wrapper .input-box:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 4px #38bdf826}.input-wrapper:focus-within .input-icon{color:var(--accent)}.cta-group{grid-template-columns:1fr 1fr;gap:12px;display:grid}.cta-group .btn{box-sizing:border-box;border-radius:10px;height:48px;padding:0;font-size:.95rem;font-weight:600}.profile-box{flex-direction:row;align-items:center;gap:16px;padding:16px 20px;display:flex}.avatar{background:linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);color:#fff;border:2px solid #fff3;border-radius:50%;justify-content:center;align-items:center;width:42px;height:42px;font-size:1.2rem;font-weight:800;display:flex;box-shadow:0 4px 14px #38bdf840}.profile-details{flex-direction:column;display:flex}.profile-meta{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:2px;font-size:.72rem;font-weight:600}.profile-name{color:var(--text);letter-spacing:.02em;font-size:1.1rem;font-weight:700}.profile-name-row{align-items:center;gap:8px;min-width:0;display:flex}.host-badge{color:#047857;background:#10b98124;border:1px solid #10b98147;border-radius:999px;flex:none;justify-content:center;align-items:center;padding:3px 8px;font-size:.72rem;font-weight:700;display:inline-flex}.host-badge[hidden]{display:none}[data-theme=dark] .host-badge{color:#6ee7b7;background:#34d39929;border-color:#34d39952}