:root{font-family:Inter,ui-sans-serif,system-ui,sans-serif;color:#ecf4fb;background:#0c1521}*{box-sizing:border-box}body{margin:0}.auth-screen{min-height:100dvh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 80% 5%,#1e3e5a,#0c1521 55%)}.auth-card{width:min(420px,100%);padding:34px;border:1px solid #30495e;border-radius:20px;background:#111e2cf2;box-shadow:0 28px 100px #0008;display:grid;gap:15px}.logo,.brand{font-size:27px;font-weight:800;letter-spacing:-1px}.logo span,.brand span{color:#58a6ff}.auth-card h1{margin:4px 0 0;font-size:25px}.auth-card>p{margin:0;color:#9db4c8}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:4px;background:#0b1723;border-radius:10px}.tab{border:0;border-radius:7px;padding:10px;background:transparent;color:#9db4c8;font:inherit;cursor:pointer}.tab.active{background:#285177;color:white}.auth-card label{display:grid;gap:7px;color:#bed0df;font-size:13px;font-weight:600}.auth-card input{width:100%;padding:12px;border:1px solid #385168;border-radius:9px;background:#0d1824;color:#fff;font:inherit}.auth-card input:focus,#text:focus{outline:2px solid #4196e6;outline-offset:1px}.primary{border:0;border-radius:9px;padding:13px;background:#3988d4;color:#fff;font:600 15px inherit;cursor:pointer}.primary:disabled{opacity:.65;cursor:wait}#auth-error{min-height:20px;color:#ff9b9b;font-size:13px}.privacy{font-size:12px;color:#839aad!important;line-height:1.45}.app{height:100dvh;display:grid;grid-template-columns:280px minmax(0,1fr);background:#0c1521}aside{background:#111e2c;padding:24px 12px;display:flex;flex-direction:column;gap:8px;border-right:1px solid #253647}.brand{padding:0 10px 16px}.account,.chat{border:0;text-align:left;color:inherit;background:transparent;border-radius:10px;padding:12px;cursor:pointer;font:inherit}.account{background:#2a5278;text-align:center;font-weight:650}.chat{display:flex;flex-direction:column;gap:4px}.chat.active,.chat:hover{background:#1c344a}.chat small,.section,footer{color:#91a7ba;font-size:12px}.section{font-weight:700;letter-spacing:.08em;padding:20px 12px 4px}.peers{overflow:auto}.peers p{color:#74899b;font-size:13px;padding:0 12px}.peers button{width:100%;border:0;background:transparent;color:#e5edf4;text-align:left;padding:10px 12px;border-radius:8px}.peers button:hover{background:#1c344a}footer{margin-top:auto;padding:12px;display:flex;align-items:center;gap:8px}footer i{width:8px;height:8px;border-radius:50%;background:#697b8b}footer i.online{background:#55d18c}.conversation{display:grid;grid-template-rows:76px minmax(0,1fr) 72px;min-width:0}header{display:flex;justify-content:space-between;align-items:center;padding:0 26px;border-bottom:1px solid #253647;background:#111e2c}h2{font-size:17px;margin:0 0 4px}header p{margin:0;color:#8fa6b9;font-size:13px}header button{border:0;background:transparent;color:#bcd0df;font-size:25px}.messages{padding:24px;overflow:auto;display:flex;flex-direction:column;gap:8px;background:radial-gradient(circle at 70% 10%,#152638,#0c1521 55%)}.empty{margin:auto;text-align:center;color:#9eb2c2;display:flex;flex-direction:column;gap:8px}.empty strong{color:#eaf3fb;font-size:18px}.bubble{max-width:min(560px,78%);padding:10px 13px;border-radius:14px;background:#172737;align-self:flex-start;white-space:pre-wrap;overflow-wrap:anywhere}.bubble.mine{align-self:flex-end;background:#285177}.meta{display:block;color:#a9c6d9;font-size:11px;margin-bottom:4px}#composer{background:#111e2c;padding:14px 22px;display:flex;gap:10px;border-top:1px solid #253647}#text{min-width:0;flex:1;background:#1a2c3d;border:1px solid #30495e;border-radius:22px;padding:12px 16px;color:#fff;font-size:15px}#composer button{width:45px;min-width:45px;border:0;border-radius:50%;background:#3988d4;color:white;font-size:19px}.mobile-nav{display:none}

@media (min-width:1440px){.app{grid-template-columns:320px minmax(0,1fr)}aside{padding:28px 16px}.messages{padding:32px 8vw}.bubble{max-width:620px}}
@media (max-width:900px){.app{grid-template-columns:230px minmax(0,1fr)}aside{padding:18px 8px}.section{padding-top:16px}header{padding:0 18px}.messages{padding:18px}#composer{padding:12px 16px}}
@media (max-width:700px){.auth-screen{padding:16px;align-items:start}.auth-card{margin-top:clamp(20px,12vh,110px);padding:26px 20px;border-radius:16px}.app{height:100dvh;grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) 62px}.app aside{display:none}.conversation{grid-row:1;grid-template-rows:64px minmax(0,1fr) 68px;height:calc(100dvh - 62px)}header{padding:0 16px}h2{font-size:16px}header p{font-size:12px}.messages{padding:16px 12px;gap:7px}.bubble{max-width:86%;padding:9px 11px;border-radius:13px;font-size:15px}.meta{font-size:10px}#composer{padding:11px 12px;gap:8px}#text{min-height:44px;padding:10px 14px;font-size:16px}#composer button{height:44px;width:44px;min-width:44px}.mobile-nav{display:grid;grid-template-columns:1fr 1fr;grid-row:2;background:#111e2c;border-top:1px solid #253647;padding:6px 10px env(safe-area-inset-bottom);gap:6px}.mobile-nav-item{border:0;border-radius:9px;background:transparent;color:#9db4c8;font:600 12px inherit}.mobile-nav-item.active{background:#1d3951;color:#eaf3fb}}
@media (max-width:380px){.auth-card{padding:22px 16px}.auth-card h1{font-size:22px}.conversation{grid-template-rows:58px minmax(0,1fr) 64px}.messages{padding:12px 8px}.bubble{max-width:91%}#composer{padding:9px 8px}}