:root{--surface:#fbfcfa;--soft:#f1f5f2;--line:#dfe7e3;--ink:#112725;--muted:#6d7e7a;--mint:#55d8ae;--mint-dark:#109c74;--sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace;color:var(--ink);font-family:var(--sans);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}*{box-sizing:border-box}html{background:#e9efec;min-width:320px;min-height:100%}body{background:linear-gradient(120deg,#4aaa8c14,#0000 42%),#e9efec;min-width:320px;min-height:100vh;margin:0}button,input,textarea{font:inherit}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--mint-dark);outline-offset:3px}::selection{color:#edfff9;background:var(--mint-dark)}.app-shell{background:var(--surface);border-right:1px solid var(--line);border-left:1px solid var(--line);width:min(1440px,100%);min-height:100svh;margin:0 auto;overflow:hidden}.topbar{z-index:2;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffffe0;justify-content:space-between;align-items:center;min-height:76px;padding:0 32px;display:flex;position:relative}.brand{color:inherit;align-items:center;gap:12px;text-decoration:none;display:inline-flex}.brand-mark{color:#ecfff9;background:var(--ink);border-radius:13px;place-items:center;width:42px;height:42px;font-weight:800;display:grid;box-shadow:inset 0 0 0 1px #ffffff1a}.brand strong,.brand small{display:block}.brand strong{color:var(--ink);letter-spacing:-.02em;font-size:.95rem}.brand small{color:var(--muted);letter-spacing:.04em;margin-top:1px;font-size:.7rem}.connection-badge{color:var(--muted);background:var(--soft);border:1px solid var(--line);border-radius:999px;align-items:center;gap:8px;padding:8px 12px;font-size:.74rem;font-weight:700;display:inline-flex}.status-dot{background:#d99d18;border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #d99d181f}.connection-badge--connected .status-dot{background:var(--mint-dark);box-shadow:0 0 0 4px #109c741f}.connection-badge--disconnected .status-dot{background:#d85656;box-shadow:0 0 0 4px #d856561f}.workspace{grid-template-columns:minmax(280px,.72fr) minmax(0,1.65fr);min-height:calc(100svh - 77px);display:grid}.info-panel{color:#b8c8c5;background:radial-gradient(circle at 18% 12%,#4de0b324,#0000 30%),linear-gradient(145deg,#152b2a 0%,#0e1d1d 64%,#091515 100%);flex-direction:column;justify-content:space-between;min-height:calc(100svh - 77px);padding:clamp(36px,5vw,72px);display:flex}.eyebrow{color:var(--mint);letter-spacing:.2em;margin:0 0 18px;font-size:.66rem;font-weight:800}.eyebrow--dark{color:var(--mint-dark);margin-bottom:7px}.info-panel h1{color:#f3fffb;letter-spacing:-.055em;max-width:540px;margin:0;font-size:clamp(2.3rem,4vw,4.8rem);line-height:1.04}.intro{color:#a7bab7;max-width:510px;margin:28px 0 0;font-size:clamp(.9rem,1.2vw,1.05rem);line-height:1.75}.request-flow{border-top:1px solid #ffffff1a;margin:48px 0;padding:0;list-style:none;display:grid}.request-flow li{border-bottom:1px solid #ffffff1a;align-items:center;gap:16px;padding:18px 0;display:flex}.request-flow li>span{color:var(--mint);font-family:var(--mono);font-size:.7rem}.request-flow strong,.request-flow small{display:block}.request-flow strong{color:#ecf8f5;font-size:.86rem}.request-flow small{color:#748d89;margin-top:2px;font-size:.7rem}.protocol-list{flex-wrap:wrap;gap:8px;display:flex}.protocol-list span{color:#8ca29e;font-family:var(--mono);border:1px solid #ffffff1f;border-radius:6px;padding:6px 9px;font-size:.6rem}.chat-panel{background:#fbfcfa;grid-template-rows:auto auto minmax(0,1fr) auto;min-width:0;height:calc(100svh - 77px);display:grid}.chat-heading{border-bottom:1px solid var(--line);background:#fbfcfaeb;justify-content:space-between;align-items:flex-end;padding:28px clamp(24px,4vw,54px) 22px;display:flex}.chat-heading h2{color:var(--ink);letter-spacing:-.04em;margin:0;font-size:1.55rem}.message-count{color:var(--muted);font-size:.72rem}.error-banner{color:#8b3737;background:#fff2f1;border-bottom:1px solid #f2d2d0;justify-content:space-between;align-items:center;gap:18px;padding:10px clamp(24px,4vw,54px);font-size:.74rem;display:flex}.error-banner button{color:#8b3737;font:inherit;cursor:pointer;background:0 0;border:1px solid #dca4a1;border-radius:7px;flex:none;padding:5px 9px;font-weight:700}.message-list{scroll-behavior:smooth;min-height:0;padding:28px clamp(24px,4vw,54px);overflow-y:auto}.message{align-items:flex-start;gap:13px;max-width:76%;margin-bottom:24px;animation:.24s ease-out both message-in;display:flex}.message--own{flex-direction:row-reverse;margin-left:auto}.avatar{color:#41615b;background:#dcebe7;border-radius:11px;flex:0 0 36px;place-items:center;width:36px;height:36px;font-size:.72rem;font-weight:800;display:grid}.message--own .avatar{color:#eafff8;background:var(--mint-dark)}.message-content{min-width:0}.message-meta{align-items:baseline;gap:10px;margin:0 2px 6px;display:flex}.message--own .message-meta{justify-content:flex-end}.message-meta strong{max-width:220px;color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:.75rem;overflow:hidden}.message-meta time{color:#9aaaa6;font-size:.64rem}.message-content>p{overflow-wrap:anywhere;color:#31423f;white-space:pre-wrap;border:1px solid var(--line);background:#fff;border-radius:4px 15px 15px;margin:0;padding:11px 14px;font-size:.87rem;line-height:1.58;box-shadow:0 5px 18px #18332f0a}.message--own .message-content>p{color:#f1fffa;background:var(--ink);border-color:var(--ink);border-radius:15px 4px 15px 15px}.empty-state{text-align:center;place-content:center;place-items:center;min-height:100%;padding:40px 20px;display:grid}.empty-icon{width:48px;height:48px;color:var(--mint-dark);background:#def2eb;border-radius:16px;place-items:center;margin-bottom:18px;font-size:1.3rem;display:grid}.empty-state h3{color:var(--ink);margin:0 0 8px;font-size:1rem}.empty-state p{max-width:360px;color:var(--muted);margin:0;font-size:.76rem;line-height:1.6}.loading-ring{border:3px solid #d9e6e2;border-top-color:var(--mint-dark);border-radius:50%;width:28px;height:28px;margin-bottom:14px;animation:.7s linear infinite spin}.composer{border-top:1px solid var(--line);background:#fff;grid-template-columns:minmax(130px,.25fr) minmax(0,1fr);gap:12px;padding:18px clamp(24px,4vw,54px) 24px;display:grid}.username-field{grid-template-columns:max-content minmax(0,1fr);align-self:end;align-items:center;gap:6px;display:grid}.username-field>span{color:var(--muted);font-size:.64rem;font-weight:700}.username-field input,.message-field{background:var(--soft);border:1px solid var(--line);border-radius:12px;min-width:0}.username-field input{width:100%;height:48px;color:var(--ink);font:inherit;outline:none;padding:0 13px;font-size:.78rem}.message-field{align-self:end;min-height:50px;padding:5px 5px 5px 15px;display:flex}.message-field textarea{resize:none;min-width:0;max-height:116px;color:var(--ink);font:inherit;background:0 0;border:0;outline:0;flex:1;align-self:center;padding:8px 8px 8px 0;font-size:.82rem;line-height:1.5}.message-field button{color:#edfff9;min-width:78px;font:inherit;background:var(--mint-dark);cursor:pointer;border:0;border-radius:9px;justify-content:center;align-items:center;gap:8px;padding:0 15px;font-size:.75rem;font-weight:800;transition:background .16s,transform .16s;display:inline-flex}.message-field button:hover:not(:disabled){background:#087d5d;transform:translateY(-1px)}.message-field button:disabled{color:#9aaba6;cursor:not-allowed;background:#dce5e2}.username-field input:focus,.message-field:focus-within{border-color:var(--mint-dark);box-shadow:0 0 0 3px #109c741a}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes message-in{0%{opacity:0;transform:translateY(6px)}}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=900px){.workspace{grid-template-columns:1fr}.info-panel{min-height:auto;padding:42px 28px;display:block}.info-panel h1{max-width:650px;font-size:clamp(2.2rem,9vw,4.2rem)}.intro{max-width:680px}.request-flow{border-top:0;grid-template-columns:repeat(3,1fr);gap:14px;margin:34px 0 26px}.request-flow li{border:1px solid #ffffff1a;border-radius:12px;align-items:flex-start;padding:14px}.chat-panel{height:min(820px,100svh);min-height:680px}}@media (width<=620px){.app-shell{border:0}.topbar{min-height:68px;padding:0 18px}.brand-mark{width:38px;height:38px}.brand small{display:none}.connection-badge{padding:7px 9px;font-size:.66rem}.workspace{min-height:calc(100svh - 69px)}.info-panel{padding:38px 20px}.request-flow{grid-template-columns:1fr;gap:8px}.request-flow li{padding:11px 13px}.protocol-list{display:none}.chat-panel{height:calc(100svh - 69px);min-height:620px}.chat-heading{padding:22px 18px 17px}.message-list{padding:22px 18px}.message{max-width:92%}.composer{grid-template-columns:1fr;padding:13px 14px 16px}.username-field{grid-template-columns:max-content minmax(0,1fr)}.username-field input{height:40px}.error-banner{padding:9px 18px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}