:root{--bg:#f5f7fb;--card:#fff;--ink:#0f172a;--mut:#64748b;--line:#e2e8f0;--pri:#2563eb;--pri2:#dbeafe;--grn:#16a34a;--red:#dc2626}
*{box-sizing:border-box}body{margin:0;font:15px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}
.hidden{display:none!important}.muted{color:var(--mut)}.sm{font-size:13px}.err{color:var(--red)}.note{font-size:13px;color:var(--mut);min-height:1em}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:0 1px 3px rgba(15,23,42,.05);margin-bottom:14px}
.banner{background:#fff7ed;border-bottom:1px solid #fed7aa;color:#9a3412;padding:10px 16px;font-size:14px;text-align:center}
.login{min-height:90vh;display:grid;place-items:center;padding:16px}.login .card{width:min(360px,100%);text-align:center}.logo{font-size:42px}
input,select{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;width:100%;min-width:0}
input:focus,select:focus{outline:2px solid var(--pri2);border-color:var(--pri)}
form#loginForm{display:grid;gap:10px}
.btn{font:inherit;font-weight:600;border:0;border-radius:10px;padding:10px 16px;cursor:pointer;background:var(--pri2);color:var(--pri)}
.btn.primary{background:var(--pri);color:#fff}.btn.green{background:var(--grn);color:#fff}.btn.red{background:var(--red);color:#fff}.btn.ghost{background:#f1f5f9;color:var(--ink)}
.btn.wide{width:100%;margin-top:8px}.btn.round{border-radius:999px;padding:12px 26px}.btn:disabled{opacity:.5}
.link{background:none;border:0;color:var(--pri);cursor:pointer;font:inherit}
.top{display:flex;align-items:center;gap:10px;padding:12px 16px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.top .link{margin-left:auto}
.pill{font-size:12px;padding:3px 10px;border-radius:99px;background:#f1f5f9;color:var(--mut)}.pill.ok{background:#dcfce7;color:var(--grn)}
.tabs{display:flex;gap:4px;padding:8px 12px;background:#fff;border-bottom:1px solid var(--line)}
.tabs button{position:relative;flex:1;border:0;background:none;padding:8px;border-radius:10px;cursor:pointer;font:inherit;color:var(--mut);display:flex;gap:6px;justify-content:center;align-items:center}
.tabs button.on{background:var(--pri2);color:var(--pri);font-weight:600}
.badge{position:absolute;top:2px;right:8px;background:var(--red);color:#fff;font-style:normal;font-size:11px;border-radius:99px;padding:1px 6px}
.tab{padding:14px;max-width:1000px;margin:0 auto}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.grid2>.card{margin:0}
.row{display:flex;gap:8px;margin-top:8px}.row.center{justify-content:center}.row.end{justify-content:flex-end}
.dial{font-size:26px;text-align:center;letter-spacing:1px;margin:10px 0;border:0;border-bottom:1px solid var(--line);border-radius:0}
.keys{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:300px;margin:0 auto 10px}
.keys button{aspect-ratio:1.4;border:1px solid var(--line);border-radius:14px;background:#f8fafc;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center}
.keys button:active{background:var(--pri2)}.keys b{font-size:22px;font-weight:500}.keys small{font-size:10px;color:var(--mut);min-height:12px}
.active{margin-top:14px;padding:14px;border-radius:12px;background:#eff6ff;text-align:center}.timer{font-size:22px;font-variant-numeric:tabular-nums;margin:4px 0}
.list{list-style:none;margin:0;padding:0}.list li{padding:10px 6px;border-bottom:1px solid var(--line);display:flex;gap:8px;align-items:center}
.list li .grow{flex:1;min-width:0}.list li .sub{font-size:12px;color:var(--mut);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.msgs{display:grid;grid-template-columns:280px 1fr;padding:0;height:calc(100vh - 150px);min-height:420px;overflow:hidden}
#convList{border-right:1px solid var(--line);padding:10px;overflow:auto}#convos li{cursor:pointer;border-radius:10px}#convos li.sel{background:var(--pri2)}
.thread{display:flex;flex-direction:column;min-width:0}.threadHead{padding:12px;border-bottom:1px solid var(--line)}
.bubbles{flex:1;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:6px;background:#fafbfd}
.b{max-width:75%;padding:8px 12px;border-radius:16px;white-space:pre-wrap;word-wrap:break-word}.b.in{background:#fff;border:1px solid var(--line);align-self:flex-start}.b.out{background:var(--pri);color:#fff;align-self:flex-end}
.b small{display:block;font-size:10px;opacity:.7;margin-top:2px}
.composer{display:flex;gap:6px;padding:10px;border-top:1px solid var(--line)}.composer select{width:150px}
.price{font-weight:700;color:var(--pri)}.tag{font-size:11px;background:#fef3c7;color:#92400e;padding:2px 8px;border-radius:99px;vertical-align:middle}
.demo{font-size:11px;background:#fee2e2;color:#991b1b;padding:2px 6px;border-radius:6px;font-weight:700}
.res{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px}.res .card{margin:0;padding:12px}.num{font-size:18px;font-weight:600;letter-spacing:.5px}
.form{display:grid;gap:10px;max-width:420px}.form label{display:grid;gap:4px;font-size:13px;color:var(--mut)}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.4);display:grid;place-items:center;padding:16px;z-index:20}.modal .card{width:min(420px,100%)}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;z-index:30;max-width:90vw}
.mob{display:none}
@media(max-width:760px){.grid2{grid-template-columns:1fr}.tabs span{display:none}.tabs button{font-size:20px}
.msgs{grid-template-columns:1fr;height:calc(100vh - 140px)}.msgs.open #convList{display:none}.msgs:not(.open) .thread{display:none}.mob{display:inline}.composer select{width:110px}}