:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#111b21;background:#e9edef;--green:#008069;--dark:#075e54;--line:#dfe3e5}*{box-sizing:border-box}body{margin:0;min-height:100dvh}button,input,textarea{font:inherit}button{cursor:pointer}.app-shell{height:100dvh;max-width:1440px;margin:auto;background:#fff;display:grid;grid-template-columns:minmax(300px,31%) 1fr;box-shadow:0 1px 8px #66778155}.sidebar{border-right:1px solid var(--line);min-width:0;background:#fff}.sidebar header,.chat-header{height:64px;background:#f0f2f5;display:flex;align-items:center;padding:10px 16px;gap:12px}.sidebar header{justify-content:space-between}.sidebar header small,.chat-header small{display:block;color:#667781;margin-top:2px}.actions{display:flex;gap:4px}.actions form{margin:0}.actions button,.back{border:0;background:transparent;font-size:25px;color:#54656f;border-radius:50%;width:40px;height:40px}.chat-list{height:calc(100dvh - 64px);overflow:auto}.chat-row{width:100%;border:0;background:#fff;display:flex;text-align:left;gap:12px;padding:10px 14px}.chat-row:hover,.chat-row.selected{background:#f0f2f5}.avatar{width:45px;height:45px;flex:0 0 45px;border-radius:50%;display:grid;place-items:center;background:#7fbdb4;color:white;font-weight:700;font-size:19px}.chat-copy{min-width:0;flex:1;border-bottom:1px solid #eef0f1;padding:2px 0 11px}.chat-copy>span{display:flex;justify-content:space-between;gap:8px}.chat-copy small{color:#667781;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-copy time{font-size:12px;color:#667781}.chat-copy b{background:#25d366;color:white;border-radius:12px;padding:1px 6px;font-size:11px}.conversation{min-width:0;display:grid;grid-template-rows:64px 1fr auto;background:#efeae2}.chat-header{border-bottom:1px solid #ddd}.back{display:none;font-size:35px}.messages{padding:24px 7%;overflow:auto;background-color:#efeae2;background-image:radial-gradient(#85917d20 1px,transparent 1px);background-size:18px 18px;display:flex;flex-direction:column;gap:5px}.welcome{margin:auto;text-align:center;color:#667781}.brand-mark{margin:auto;width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:#fff;font-size:34px;font-weight:bold}.bubble{max-width:min(76%,600px);padding:7px 9px 5px;border-radius:8px;box-shadow:0 1px 1px #0002;overflow-wrap:anywhere}.bubble.mine{align-self:flex-end;background:#d9fdd3;border-top-right-radius:2px}.bubble.theirs{align-self:flex-start;background:white;border-top-left-radius:2px}.bubble time{font-size:10px;color:#667781;margin-left:8px;float:right;margin-top:7px}.composer{background:#f0f2f5;padding:9px 15px;display:flex;gap:10px}.composer textarea{border:0;border-radius:22px;resize:none;flex:1;padding:11px 16px;max-height:100px}.composer button{border:0;border-radius:50%;background:var(--green);color:white;width:44px;height:44px}.empty{padding:30px;text-align:center;color:#667781}.auth-page{background:linear-gradient(var(--dark) 220px,#e9edef 220px);display:grid;place-items:center;padding:30px 16px}.auth-card{background:#fff;border-radius:8px;box-shadow:0 4px 25px #0003;width:min(430px,100%);padding:35px}.auth-card h1{text-align:center;margin-bottom:3px}.muted{text-align:center;color:#667781}.tabs{display:flex;margin:25px 0}.tab{flex:1;padding:10px;border:0;border-bottom:2px solid var(--line);background:white}.tab.active{color:var(--green);border-color:var(--green)}label{display:block;margin:13px 0;color:#54656f;font-size:14px}input{display:block;width:100%;padding:11px;border:1px solid #ccd2d5;border-radius:5px;margin-top:5px}.primary{width:100%;padding:11px;border:0;border-radius:5px;background:var(--green);color:white;font-weight:650}.error{background:#fff0ee;color:#b3261e;padding:9px;border-radius:5px}dialog{border:0;border-radius:9px;padding:25px;width:min(380px,calc(100% - 30px));box-shadow:0 8px 30px #0005}dialog::backdrop{background:#1118}.dialog-close{float:right;border:0;background:none;font-size:25px}#toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,20px);background:#263238;color:#fff;padding:9px 16px;border-radius:20px;opacity:0;transition:.2s;pointer-events:none}#toast.show{opacity:1;transform:translate(-50%,0)}@media(max-width:700px){.app-shell{display:block}.sidebar,.conversation{position:absolute;inset:0}.conversation{transform:translateX(100%);transition:transform .18s}.chat-open .conversation{transform:none}.back{display:block}.messages{padding:16px 4%}}