:root{--bg:#0a0e19;--panel:#111725;--line:#232b3c;--text:#f3f6fb;--muted:#8791a6;--mint:#63e6be;--orange:#ff9b6a}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 10% 10%,#18233b 0,#0a0e19 42%);color:var(--text);font:15px Inter,ui-sans-serif,system-ui;min-height:100vh}.hidden{display:none!important}button,input{font:inherit}.auth{min-height:100vh;display:grid;grid-template-columns:1.15fr .85fr}.brand{padding:9vh 8vw;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}.logo{width:58px;height:58px;border:1px solid #60708c;border-radius:19px;display:grid;place-items:center;font:700 26px Georgia;color:var(--mint);box-shadow:0 12px 50px #63e6be22}.eyebrow,.section-label{font-size:11px;letter-spacing:.2em;color:var(--mint);margin-top:42px}.brand h1{font:500 clamp(52px,7vw,104px)/.95 Georgia;margin:18px 0 26px;max-width:700px}.brand>p:last-of-type{font-size:18px;line-height:1.6;color:var(--muted);max-width:480px}.waves{display:flex;gap:8px;align-items:center;height:100px;margin-top:30px}.waves i{width:3px;border-radius:4px;background:linear-gradient(var(--mint),transparent);animation:wave 1.7s ease-in-out infinite}.waves i:nth-child(1){height:25%}.waves i:nth-child(2){height:70%;animation-delay:.2s}.waves i:nth-child(3){height:95%;animation-delay:.4s}.waves i:nth-child(4){height:55%;animation-delay:.6s}.waves i:nth-child(5){height:30%;animation-delay:.8s}@keyframes wave{50%{transform:scaleY(.35);opacity:.4}}.login{background:#f5f3ee;color:#17202e;display:flex;flex-direction:column;justify-content:center;padding:10vw}.tabs{display:flex;border-bottom:1px solid #ccd0d4;margin-bottom:45px}.tab{background:none;border:0;padding:14px 0;margin-right:32px;color:#7a8189;cursor:pointer}.tab.active{color:#17202e;border-bottom:2px solid #17202e}label{display:block;font-size:12px;letter-spacing:.08em;margin:24px 0}input{width:100%;background:transparent;border:0;border-bottom:1px solid #b6bbc0;padding:13px 0;outline:none;color:inherit}input:focus{border-color:#18243a}.primary{width:100%;padding:17px 20px;border:0;border-radius:5px;background:#101827;color:white;margin-top:25px;display:flex;justify-content:space-between;cursor:pointer}.demo{margin-top:35px;color:#7a8189;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.demo span{width:100%;font-size:12px}.demo button{border:1px solid #c8cbd0;background:transparent;border-radius:30px;padding:8px 15px;cursor:pointer}#error{color:#b83d3d;min-height:20px}.shell{height:100vh;display:grid;grid-template-columns:320px 1fr;background:var(--bg)}aside{border-right:1px solid var(--line);padding:26px 16px;display:flex;flex-direction:column}.top{display:flex;gap:13px;align-items:center;padding:0 10px 25px}.logo.small{width:40px;height:40px;border-radius:13px;font-size:18px}.top small,.chat header small{display:block;color:var(--muted);margin-top:4px}.section-label{margin:20px 12px 10px}.contact{width:100%;border:0;background:transparent;color:var(--text);padding:12px;border-radius:12px;display:flex;align-items:center;gap:12px;text-align:left;cursor:pointer}.contact:hover,.contact.active{background:#171f30}.avatar{width:42px;height:42px;flex:none;border-radius:50%;background:linear-gradient(145deg,#343f57,#1c2435);display:grid;place-items:center;color:var(--mint);font-weight:700;position:relative}.online:after{content:'';position:absolute;width:9px;height:9px;border-radius:50%;background:var(--mint);right:0;bottom:2px;border:2px solid var(--panel)}.logout{margin-top:auto;border:0;background:none;color:var(--muted);text-align:left;padding:12px}.chat{display:grid;grid-template-rows:84px 1fr 86px;min-width:0}.chat header{border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 28px;gap:13px}.call{margin-left:auto;border:1px solid #344159;background:#172338;color:var(--mint);width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:20px}.call:disabled{opacity:.35}.messages{padding:30px clamp(20px,6vw,90px);overflow:auto;display:flex;flex-direction:column;gap:10px}.empty{margin:auto;text-align:center;color:var(--muted);display:flex;flex-direction:column;gap:9px}.empty span{font-size:28px;color:var(--mint)}.bubble{max-width:min(70%,620px);padding:12px 15px;border-radius:16px 16px 16px 4px;background:#1a2232;line-height:1.45;align-self:flex-start}.bubble.me{align-self:flex-end;background:#dcefe9;color:#15241f;border-radius:16px 16px 4px}.bubble time{display:block;font-size:10px;opacity:.55;margin-top:5px;text-align:right}.composer{border-top:1px solid var(--line);display:flex;align-items:center;padding:15px clamp(20px,6vw,90px);gap:12px}.composer input{background:#131a28;border:1px solid var(--line);border-radius:16px;padding:16px;color:white}.composer button{border:0;background:var(--mint);width:45px;height:45px;border-radius:50%;cursor:pointer}.modal{position:fixed;inset:0;background:#080c15e8;backdrop-filter:blur(18px);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:3}.modal p{color:var(--muted)}.modal h2{font:42px Georgia;margin:0 0 35px}.avatar.big{width:90px;height:90px;font-size:28px}.modal button,.callbar button{width:56px;height:56px;border-radius:50%;border:0;margin:8px;font-size:20px}.danger{background:#ff6464;color:white}.accept{background:var(--mint)}.callbar{position:fixed;z-index:4;left:50%;top:18px;transform:translateX(-50%);background:#f6f3ec;color:#18202d;border-radius:18px;padding:10px 12px 10px 20px;display:flex;align-items:center;box-shadow:0 20px 80px #0008}.callbar>div:first-child{min-width:180px}.callbar small{display:block;color:#6e7681}.callbar button{width:42px;height:42px}.pulse{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--mint);margin-right:8px;box-shadow:0 0 0 8px #63e6be22}@media(max-width:760px){.auth{grid-template-columns:1fr}.brand{min-height:42vh;padding:45px 28px}.brand h1{font-size:52px}.waves{display:none}.login{padding:45px 28px}.shell{grid-template-columns:88px 1fr}aside{padding:20px 10px}.top>div:last-child,.section-label,.contact div:not(.avatar),.logout{display:none}.contact{padding:10px;justify-content:center}.chat header{padding:0 14px}.messages,.composer{padding-left:14px;padding-right:14px}.bubble{max-width:86%}}