:root{color-scheme:light;--k-canvas: #fcf5eb;--k-surface: #ffffff;--k-surface-2: #f0f4f9;--k-text: #1c1e21;--k-ink: #111b21;--k-muted: #5e5e5e;--k-accent: #0060cc;--k-border: rgba(28, 30, 33, .1);--k-error: #ff303c;--k-ok: #39765f;--k-gradient: linear-gradient(135deg, #8d28c8 0%, #7c42fa 40%, #046ef4 100%);--k-text-display: 48px;--k-leading-display: 1.1;--k-text-heading: 32px;--k-leading-heading: 1.15;--k-text-title: 20px;--k-leading-title: 1.3;--k-text-body-lg: 18px;--k-leading-body-lg: 1.4;--k-text-body: 16px;--k-leading-body: 1.4;--k-text-label: 14px;--k-leading-label: 1.4;--k-text-caption: 12px;--k-leading-caption: 1.4;--k-space-4: 4px;--k-space-8: 8px;--k-space-12: 12px;--k-space-16: 16px;--k-space-20: 20px;--k-space-24: 24px;--k-space-32: 32px;--k-space-40: 40px;--k-space-48: 48px;--k-space-64: 64px;--k-radius-pill: 9999px;--k-radius-composer: 24px;--k-radius-panel: 20px;--k-radius-card: 16px;--k-radius-media: 25px}:root[data-theme=dark]{color-scheme:dark;--k-canvas: #0d0d0d;--k-surface: #17181c;--k-surface-2: #1f1f24;--k-text: #ffffff;--k-ink: #ffffff;--k-muted: #c3c3c3;--k-accent: #5aa9ff;--k-border: rgba(255, 255, 255, .12);--k-error: #ce4257;--k-ok: #4ecb8d;--k-gradient: linear-gradient(135deg, #7c3aed 0%, #6e1aff 50%, #046ef4 100%)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--k-canvas: #0d0d0d;--k-surface: #17181c;--k-surface-2: #1f1f24;--k-text: #ffffff;--k-ink: #ffffff;--k-muted: #c3c3c3;--k-accent: #5aa9ff;--k-border: rgba(255, 255, 255, .12);--k-error: #ce4257;--k-ok: #4ecb8d;--k-gradient: linear-gradient(135deg, #7c3aed 0%, #6e1aff 50%, #046ef4 100%)}}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0;background:var(--k-canvas);color:var(--k-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline:3px solid var(--k-accent);outline-offset:3px}.icon{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}.icon-sm{width:16px;height:16px}.icon-lg{width:24px;height:24px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.primary-button,.secondary-button,.text-button,.icon-button{font-weight:600}.primary-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:var(--k-radius-pill);padding:14px 28px;color:#fff;background:var(--k-gradient);font-size:var(--k-text-body)}.primary-button:hover:not(:disabled){filter:brightness(1.06)}.secondary-button{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--k-border);border-radius:var(--k-radius-pill);padding:12px 22px;color:var(--k-text);background:var(--k-surface);font-size:15px}.secondary-button:hover:not(:disabled){background:var(--k-surface-2)}.text-button{display:inline-flex;align-items:center;gap:8px;border:0;padding:8px 0;color:var(--k-accent);background:transparent;font-size:var(--k-text-label)}.text-button:hover{text-decoration:underline}.icon-button{display:grid;place-items:center;flex:none;width:38px;height:38px;border:1px solid var(--k-border);border-radius:var(--k-radius-pill);color:var(--k-muted);background:var(--k-surface)}.icon-button:hover:not(:disabled){background:var(--k-surface-2)}.icon-button.primary-button{width:46px;height:46px;padding:0;border:0;color:#fff;background:var(--k-gradient)}.app-shell{position:relative;display:grid;min-height:100vh;padding:clamp(1rem,4vw,3rem);place-items:center}.shell-toolbar{position:fixed;top:20px;right:20px;z-index:5}.connection-shell{grid-template-rows:auto auto;justify-items:center}.brand-mark{display:grid;place-items:center;flex:none;border-radius:var(--k-radius-card);color:#fff;background:var(--k-gradient);font-weight:700}.connection-panel{width:min(100%,26rem);overflow:hidden;border:1px solid var(--k-border);border-radius:var(--k-radius-panel);background:var(--k-surface);text-align:left}.connection-head{display:flex;align-items:center;gap:14px;padding:24px;color:#fff;background:var(--k-gradient)}.connection-head .brand-mark{width:46px;height:46px;font-size:22px;background:#ffffff2e}.connection-head .eyebrow{margin:0 0 2px;color:#ffffffe6}.connection-head .brand-wordmark{margin:0;color:#fff;font-size:24px;line-height:1.15;font-weight:700}.connection-body{padding:24px}.eyebrow{display:inline-flex;align-items:center;gap:6px;margin:0 0 8px;color:var(--k-accent);font-size:var(--k-text-caption);font-weight:600;letter-spacing:.06em;text-transform:uppercase}h1{margin:0;font-size:var(--k-text-heading);line-height:var(--k-leading-heading);font-weight:700}.intro{margin:12px 0 0;color:var(--k-muted);font-size:var(--k-text-body);line-height:var(--k-leading-body)}.connection-form,.new-chat-dialog form{display:grid;gap:8px;margin-top:24px}.connection-form label,.new-chat-dialog label,.composer label{display:flex;align-items:center;gap:7px;margin-top:8px;font-size:var(--k-text-label);font-weight:600}.field-control{position:relative;display:flex;align-items:center}.field-control>.icon{position:absolute;left:16px;color:var(--k-muted);pointer-events:none}input,textarea{width:100%;border:1px solid var(--k-border);border-radius:var(--k-radius-pill);padding:13px 20px 13px 46px;color:var(--k-text);background:var(--k-surface-2)}textarea{border-radius:var(--k-radius-composer);resize:none;min-height:3rem;max-height:160px;overflow-y:auto}input::placeholder,textarea::placeholder{color:var(--k-muted)}input[aria-invalid=true]{border-color:var(--k-error)}.field-error{margin:4px 0 0;color:var(--k-error);font-size:var(--k-text-label);line-height:1.4}.field-hint{margin:4px 0 0;color:var(--k-muted);font-size:var(--k-text-caption)}.connection-form .primary-button{margin-top:16px}.messenger-shell{display:grid;grid-template-columns:minmax(15rem,19rem) minmax(0,1fr);width:min(100% - 3rem,75rem);height:min(56rem,calc(100dvh - 3rem));min-height:33rem;margin:1.5rem auto;overflow:hidden;border:1px solid var(--k-border);border-radius:var(--k-radius-panel);background:var(--k-surface)}.chat-sidebar{display:flex;flex-direction:column;gap:16px;min-width:0;padding:24px 16px;border-right:1px solid var(--k-border);background:var(--k-surface)}.sidebar-head{display:flex;align-items:center;gap:12px}.sidebar-head .theme-toggle{margin-left:auto}.sidebar-head h1{font-size:var(--k-text-title);line-height:var(--k-leading-title)}.sidebar-head .brand-mark{width:44px;height:44px;font-size:20px}.sidebar-head .eyebrow{margin:0}.new-chat-button{width:100%}.chat-list{display:grid;align-content:start;gap:8px;min-height:0;overflow-y:auto}.chat-preview{display:flex;align-items:center;gap:12px;padding:12px;width:100%;border:0;border-radius:var(--k-radius-card);background:var(--k-surface-2);color:inherit;font:inherit;text-align:left;cursor:pointer}.chat-preview[aria-current=page],.chat-preview:hover{background:color-mix(in srgb,var(--k-accent) 12%,var(--k-surface))}.avatar{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:50%;color:#fff;background:var(--k-gradient);font-size:12px;font-weight:700}.chat-preview-copy{display:grid;gap:2px;min-width:0}.chat-preview-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:var(--k-text-label)}.chat-preview-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--k-muted);font-size:var(--k-text-caption)}.sidebar-empty{margin:0;color:var(--k-muted);font-size:var(--k-text-label);line-height:1.5}.disconnect-button{display:flex;align-items:center;gap:8px;width:100%;margin-top:auto;padding:16px 4px 4px;border:0;border-top:1px solid var(--k-border);border-radius:0;color:var(--k-muted);background:transparent;font-size:var(--k-text-label);font-weight:600;text-align:left}.disconnect-button:hover{background:var(--k-surface-2)}.chat-surface{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--k-canvas)}.chat-header{display:flex;align-items:center;gap:12px;min-height:4.5rem;padding:12px 20px;border-bottom:1px solid var(--k-border);background:var(--k-surface)}.chat-header .avatar{width:42px;height:42px;font-size:13px}.chat-identity{flex:1;min-width:0}.chat-header h2{display:flex;align-items:center;gap:8px;margin:0;overflow-wrap:anywhere;font-size:var(--k-text-title);line-height:var(--k-leading-title)}.chat-header h2 .icon{color:var(--k-muted)}.transport-status{display:flex;align-items:center;gap:7px;margin:4px 0 0;color:var(--k-ok);font-size:var(--k-text-caption)}.transport-status:before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}.transport-status.is-issue{color:var(--k-error)}.chat-empty{display:grid;align-content:center;justify-items:center;flex:1;padding:32px;text-align:center}.empty-icon{display:grid;place-items:center;width:64px;height:64px;border-radius:var(--k-radius-card);color:#fff;background:var(--k-gradient)}.chat-empty h2{margin:16px 0 6px;font-size:var(--k-text-heading);line-height:var(--k-leading-heading)}.chat-empty p{max-width:22rem;margin:0;color:var(--k-muted);font-size:var(--k-text-body);line-height:1.5}.timeline-scroll{flex:1;min-height:0;overflow-y:auto;padding:24px clamp(16px,3vw,32px)}.timeline-empty{margin:24px auto;width:fit-content;color:var(--k-muted);font-size:var(--k-text-label)}.message-list{display:flex;flex-direction:column;gap:12px;margin:0;padding:0;list-style:none}.message-item{display:flex}.message-item.outgoing{justify-content:flex-end}.message-bubble{min-width:11rem;max-width:min(78%,34rem);padding:12px 16px;overflow-wrap:anywhere}.bubble-in{border:1px solid var(--k-border);border-radius:16px 16px 16px 4px;color:var(--k-text);background:var(--k-surface)}.bubble-out{border-radius:16px 16px 4px;color:#fff;background:var(--k-gradient)}.message-bubble p{margin:0;font-size:15px;line-height:1.5;white-space:pre-wrap}.message-kind{font-size:var(--k-text-caption)}.meta{display:flex;align-items:center;justify-content:flex-end;gap:5px;margin-top:6px;font-size:11px}.bubble-in .meta{color:var(--k-muted)}.bubble-out .meta{color:#fff}.meta .icon{width:14px;height:14px}.composer{padding:16px clamp(16px,3vw,32px);border-top:1px solid var(--k-border);background:var(--k-surface)}.composer-row{display:flex;align-items:flex-end;gap:12px}.composer .field-control{flex:1;align-items:flex-start}.composer .field-control>.icon{top:14px}.composer textarea{min-height:46px}.send-status{margin:8px 0 0;color:var(--k-muted);font-size:var(--k-text-caption)}.dialog-backdrop{position:fixed;inset:0;display:grid;place-items:center;padding:16px;background:#0d0d0d73;z-index:10}.new-chat-dialog{position:relative;width:min(100%,28rem);padding:28px;border-radius:var(--k-radius-panel);background:var(--k-surface)}.new-chat-dialog h2{margin:0;font-size:var(--k-text-title);line-height:var(--k-leading-title)}.new-chat-dialog>p{margin:10px 0 0;color:var(--k-muted);font-size:var(--k-text-body);line-height:1.5}.dialog-close{position:absolute;top:16px;right:16px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}@media(max-width:680px){.messenger-shell{display:flex;flex-direction:column;width:100%;height:100dvh;min-height:0;margin:0;border:0;border-radius:0}.chat-sidebar{display:flex;flex-direction:row;align-items:center;gap:8px;padding:10px 12px;border-right:0;border-bottom:1px solid var(--k-border)}.sidebar-head{gap:8px;margin-right:auto}.sidebar-head h1,.sidebar-head .eyebrow,.sidebar-empty{display:none}.chat-list{display:flex;flex:1;gap:6px;min-width:0;overflow-x:auto;overflow-y:hidden}.chat-preview{flex:none;width:auto;padding:8px}.chat-preview .avatar,.chat-preview-copy small{display:none}.sidebar-head .brand-mark{width:36px;height:36px;font-size:16px}.new-chat-button{width:auto;padding:10px 14px;font-size:14px}.disconnect-button{width:auto;margin:0;padding:10px;border-top:0;border-radius:var(--k-radius-pill)}.disconnect-button span{display:none}.chat-surface{flex:1}.chat-header{min-height:4rem;padding:10px 14px}.message-bubble{max-width:88%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}