:root{--ink:#17202a;--muted:#667180;--canvas:#f3f6f8;--panel:#fff;--line:#dce3e8;--brand:#0f6b68;--brand-dark:#0a504e;--rail:#161a28;--danger:#b4233b;--success:#18794e;--shadow:0 14px 38px rgba(28,39,50,.08)}
*{box-sizing:border-box}body{margin:0;font:14px/1.45 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--canvas)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.62}.hidden{display:none!important}.eyebrow{margin:0 0 5px;color:var(--brand);font-size:11px;font-weight:800;letter-spacing:.14em}.muted{color:var(--muted)}.login-view{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 75% 15%,#1d7772 0,transparent 27%),var(--rail)}.login-card{width:min(430px,100%);padding:36px;background:var(--panel);border-radius:24px;box-shadow:0 24px 80px rgba(0,0,0,.28)}.login-card h1{font-size:32px;margin:5px 0}.login-card label{display:block;margin:19px 0 7px;font-weight:700}.brand-mark{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:var(--brand);color:white;font-weight:900;letter-spacing:-.04em}.small-mark{width:38px;height:38px;border-radius:11px}.password-row{display:grid;grid-template-columns:1fr auto;gap:8px}.password-row .small{height:46px;margin-top:0}input,select{width:100%;height:46px;padding:0 13px;border:1px solid #aeb9c4;border-radius:11px;background:#fff;color:var(--ink);outline:none}input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,107,104,.14)}button{border:0;border-radius:11px;padding:11px 15px;font-weight:750}.primary{background:var(--brand);color:#fff}.primary:hover{background:var(--brand-dark)}.quiet{background:#edf1f4;color:var(--ink)}.danger{background:#fff0f2;color:var(--danger)}.small{padding:8px 11px}.wide{width:100%;margin-top:18px}.form-message{min-height:20px;margin:10px 0 0}.error{color:var(--danger)}.success-text{color:var(--success)}.app{min-height:100vh;display:grid;grid-template-columns:250px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;padding:22px 16px;display:flex;flex-direction:column;background:var(--rail);color:#eef3f7}.brand{display:flex;align-items:center;gap:11px;padding:0 8px 24px}.brand small,.account small{display:block;color:#9da8b7}.sidebar nav{display:grid;gap:5px}.nav-button{width:100%;text-align:left;padding:12px 14px;background:transparent;color:#b9c3d1}.nav-button:hover,.nav-button.active{background:rgba(255,255,255,.09);color:#fff}.account{margin-top:auto;padding:15px 8px 0;border-top:1px solid rgba(255,255,255,.12);overflow:hidden}.account strong,.account small{overflow:hidden;text-overflow:ellipsis}.main{min-width:0;padding:26px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.topbar h1{margin:0;font-size:29px}.badge{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;font-size:12px;font-weight:800}.badge.success{background:#e7f6ee;color:var(--success)}.badge.warn{background:#fff4df;color:#8a5700}.notice{margin-bottom:16px;padding:12px 14px;border-radius:11px;background:#fff4df;color:#704900;border:1px solid #f2d69c}.content{min-height:70vh}.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.panel-pad{padding:20px}.empty{min-height:260px;display:grid;place-items:center;text-align:center;padding:30px}.empty h2{margin-bottom:4px}.chat-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:15px;height:calc(100vh - 135px);min-height:520px}.sessions{padding:10px;overflow:auto}.sessions-head{display:flex;gap:8px;margin-bottom:8px}.session-button{width:100%;padding:12px;text-align:left;background:transparent;color:var(--ink);border:1px solid transparent}.session-button:hover,.session-button.active{background:#edf6f5;border-color:#c5dedc}.session-button strong,.session-button small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-button small{color:var(--muted);margin-top:3px}.chat-panel{display:flex;flex-direction:column;min-width:0;overflow:hidden}.chat-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--line)}.chat-head small{display:block;color:var(--muted)}.messages{flex:1;overflow:auto;padding:18px}.message{width:fit-content;max-width:min(82%,760px);margin:0 0 14px;padding:12px 14px;border-radius:15px;background:#edf1f4;white-space:pre-wrap;overflow-wrap:anywhere}.message.user{margin-left:auto;background:var(--brand);color:#fff}.message.failed{border:1px solid #e7a7b1}.message-meta{display:block;margin-top:5px;font-size:10px;opacity:.68}.composer{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:9px;padding:14px;border-top:1px solid var(--line)}.composer textarea{min-height:48px;max-height:160px;resize:vertical;padding:12px;border:1px solid #aeb9c4;border-radius:12px;font:inherit}.composer textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,107,104,.14)}.new-session{width:min(540px,100%);padding:24px}.new-session h2{margin-top:0}.field{margin-bottom:16px}.field label{display:block;margin-bottom:6px;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}.info-card{padding:18px}.info-card h3{margin:0 0 6px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}.table th{color:var(--muted);font-size:12px}.status-dot{display:inline-block;width:8px;height:8px;margin-right:7px;border-radius:50%;background:#aaa}.status-dot.on{background:var(--success)}.invite-result{margin-top:12px;padding:13px;background:#e8f5f4;border-radius:10px;overflow-wrap:anywhere}
@media(max-width:800px){.app{grid-template-columns:1fr}.sidebar{position:static;height:auto;padding:12px}.brand{padding-bottom:10px}.sidebar nav{display:flex;overflow:auto}.nav-button{width:auto;white-space:nowrap}.account{display:block;margin-top:10px}.main{padding:16px}.chat-layout{grid-template-columns:1fr;height:auto}.sessions{max-height:190px}.chat-panel{height:65vh}.message{max-width:92%}.topbar{margin-top:4px}}