:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#0f172a;background:#eef8ff;line-height:1.5}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#dff4ff 0,#f7fbff 48%,#eef6fb 100%)}button,input{font:inherit}.brand{height:64px;padding:0 max(18px,calc((100vw - 1080px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #cfe8f8;position:sticky;top:0;z-index:5}.brand a{font-weight:900;color:#0369a1;text-decoration:none}.brand span{font-weight:800;color:#334155}.shell{width:min(1080px,calc(100% - 28px));margin:0 auto;padding:42px 0 60px}.hero{text-align:center;margin:0 auto 28px;max-width:720px}.eyebrow{font-size:.78rem;letter-spacing:.14em;font-weight:900;color:#0284c7;margin:0 0 8px}.hero h1{font-size:clamp(2.35rem,7vw,4.6rem);line-height:1;margin:0;background:linear-gradient(120deg,#0369a1,#0ea5e9,#2563eb);-webkit-background-clip:text;color:transparent}.hero>p:last-child{color:#475569;font-size:1.05rem}.layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:22px;align-items:stretch}.card{background:rgba(255,255,255,.94);border:1px solid #cce8f7;border-radius:24px;box-shadow:0 18px 45px rgba(14,116,144,.11)}.auth-card{padding:26px}.tabs{display:grid;grid-template-columns:1fr 1fr;background:#eaf7ff;border-radius:14px;padding:5px;margin-bottom:20px}.tab{border:0;background:transparent;padding:10px;border-radius:10px;font-weight:800;color:#475569;cursor:pointer}.tab.active{background:#fff;color:#0369a1;box-shadow:0 4px 14px rgba(2,132,199,.12)}.form{display:grid;gap:15px}.form label{display:grid;gap:7px;font-weight:750;color:#334155}.form input{width:100%;border:1px solid #b9dced;background:#fbfdff;border-radius:12px;padding:12px 13px;outline:none}.form input:focus{border-color:#0ea5e9;box-shadow:0 0 0 4px rgba(14,165,233,.12)}.primary,.secondary{border:0;border-radius:12px;padding:12px 16px;font-weight:850;cursor:pointer}.primary{background:linear-gradient(135deg,#0284c7,#2563eb);color:#fff}.secondary{background:#e0f2fe;color:#075985}.divider{display:flex;align-items:center;gap:12px;color:#94a3b8;margin:20px 0}.divider:before,.divider:after{content:"";height:1px;background:#dbeafe;flex:1}.google-wrap{display:flex;justify-content:center;min-height:44px}.small{font-size:.84rem;color:#64748b;text-align:center}.message{min-height:24px;margin:13px 0 0;text-align:center;font-weight:700;color:#475569}.message.error{color:#b91c1c}.message.success{color:#047857}.preview{padding:34px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(150deg,#082f49,#075985 58%,#0369a1);color:#fff}.preview-icon{font:900 3rem/1 ui-monospace,SFMono-Regular,Menlo,monospace;color:#7dd3fc;margin-bottom:20px}.preview h2{font-size:1.8rem;margin:0 0 10px}.preview p{color:#dff4ff}.lobby{padding:28px;max-width:820px;margin:0 auto}.lobby-head,.online-title{display:flex;align-items:center;justify-content:space-between;gap:18px}.lobby-head{border-bottom:1px solid #e0f2fe;padding-bottom:22px}.lobby h2,.lobby h3{margin:0}.online-title{margin-top:24px}.online-title p{margin:3px 0 0;color:#64748b}.count{display:grid;place-items:center;min-width:46px;height:46px;border-radius:50%;background:#dcfce7;color:#166534;font-size:1.2rem;font-weight:900}.players{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin-top:18px}.player{display:flex;align-items:center;gap:12px;border:1px solid #d7edf8;border-radius:16px;padding:12px;background:#fafdff}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;object-fit:cover;background:#bae6fd;color:#075985;font-weight:900}.player strong{display:block}.player small{color:#64748b}.dot{width:9px;height:9px;border-radius:50%;background:#22c55e;margin-left:auto;box-shadow:0 0 0 4px #dcfce7}.empty{text-align:center;color:#64748b;padding:22px;grid-column:1/-1}.hidden{display:none!important}footer{text-align:center;color:#64748b;padding:0 16px 30px}footer a{color:#0369a1;font-weight:800;text-decoration:none}@media(max-width:760px){.shell{padding-top:26px}.layout{grid-template-columns:1fr}.preview{min-height:220px}.brand{height:auto;min-height:60px;gap:14px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}.lobby-head,.online-title{align-items:flex-start}.players{grid-template-columns:1fr}}