:root{--primary: #1a6fbf;--header-bg: #1a2332;--page-bg: #f4f5f7;--bot-border: rgba(26, 35, 50, .12);--bot-text: #1f2937;--user-text: #ffffff;--muted-text: #6b7280}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--page-bg);color:var(--bot-text)}button,input{font:inherit}.app-shell{height:100vh;display:flex;flex-direction:column;background:var(--page-bg)}.app-header{height:80px;flex-shrink:0;display:flex;align-items:center;gap:14px;padding:0 16px;background:var(--header-bg);border-bottom:3px solid var(--primary);color:#fff}.brand-mark{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:700;letter-spacing:.04em}.brand-copy{min-width:0;flex:1}.brand-name{margin:0;font-size:1.05rem;font-weight:700}.brand-tagline{margin:2px 0 0;color:#ffffffb8;font-size:.92rem}.status-badge{flex-shrink:0;padding:6px 10px;border-radius:999px;background:#ffffff1f;color:#fff;font-size:.8rem;font-weight:600}.chat-area{flex:1;overflow-y:auto;padding:16px}.message-row{display:flex;margin-bottom:12px}.message-row-user{justify-content:flex-end}.message-row-bot{justify-content:flex-start}.message-bubble{max-width:min(720px,84%);padding:12px 14px;box-shadow:0 8px 24px #1a23320d}.message-bubble-bot{background:#fff;border:.5px solid var(--bot-border);border-radius:2px 12px 12px;color:var(--bot-text)}.message-bubble-user{background:var(--header-bg);border-radius:12px 2px 12px 12px;color:var(--user-text)}.message-text{margin:0;line-height:1.5;white-space:pre-wrap}.message-markdown{line-height:1.55;font-size:.96rem;word-break:break-word}.message-markdown>:first-child{margin-top:0}.message-markdown>:last-child{margin-bottom:0}.message-markdown p,.message-markdown ul,.message-markdown ol,.message-markdown blockquote,.message-markdown pre{margin:0 0 .75rem}.message-markdown h1,.message-markdown h2,.message-markdown h3,.message-markdown h4{margin:.85rem 0 .45rem;line-height:1.3;font-weight:700}.message-markdown h1{font-size:1.15rem}.message-markdown h2{font-size:1.05rem}.message-markdown h3,.message-markdown h4{font-size:.98rem}.message-markdown strong{font-weight:700}.message-markdown em{font-style:italic}.message-markdown ul,.message-markdown ol{padding-left:1.25rem}.message-markdown li+li{margin-top:.25rem}.message-markdown li>p{margin-bottom:.35rem}.message-markdown code{padding:.1rem .35rem;border-radius:4px;background:color-mix(in srgb,var(--primary) 10%,#f3f4f6);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.88em}.message-markdown pre{padding:.75rem .85rem;border-radius:8px;background:#f3f4f6;overflow-x:auto}.message-markdown pre code{padding:0;background:transparent;font-size:.84rem}.message-markdown blockquote{padding-left:.85rem;border-left:3px solid color-mix(in srgb,var(--primary) 35%,#d1d5db);color:var(--muted-text)}.message-markdown a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}.message-markdown hr{margin:.85rem 0;border:none;border-top:1px solid #e5e7eb}.message-markdown table{width:100%;margin-bottom:.75rem;border-collapse:collapse;font-size:.9rem}.message-markdown th,.message-markdown td{padding:.45rem .55rem;border:1px solid #e5e7eb;text-align:left}.message-markdown th{background:#f9fafb;font-weight:600}.source-tag{display:inline-flex;margin-top:10px;padding:4px 8px;border-radius:999px;background:color-mix(in srgb,var(--primary) 12%,transparent);color:var(--primary);font-size:.78rem;font-weight:600}.typing-indicator{display:inline-flex;align-items:center;gap:6px;min-height:18px}.typing-dot{width:8px;height:8px;border-radius:999px;background:var(--primary);animation:typing-pulse 1.2s infinite ease-in-out}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}.chips-bar{display:flex;gap:10px;padding:0 16px 12px;overflow-x:auto;flex-shrink:0}.chips-bar-hidden{display:none}.chip-btn{flex-shrink:0;padding:10px 14px;border:1px solid #d1d5db;border-radius:999px;background:#fff;color:var(--bot-text);cursor:pointer;transition:border-color .2s ease,color .2s ease,transform .2s ease}.chip-btn:hover:enabled,.chip-btn:focus-visible{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);outline:none}.chip-btn:disabled{cursor:not-allowed;opacity:.6}.input-row{display:flex;gap:12px;padding:0 16px 16px;flex-shrink:0}.chat-input{flex:1;min-width:0;padding:14px 16px;border:1px solid #d1d5db;border-radius:14px;background:#fff;color:var(--bot-text)}.chat-input:focus{outline:2px solid color-mix(in srgb,var(--primary) 30%,transparent);outline-offset:0;border-color:var(--primary)}.chat-input:disabled{background:#eef1f4}.send-btn{padding:0 18px;border:none;border-radius:14px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.send-btn:disabled{cursor:not-allowed;opacity:.6}@keyframes typing-pulse{0%,80%,to{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}@media (max-width: 640px){.app-header{height:auto;min-height:80px;padding:14px 16px}.status-badge{display:none}.message-bubble{max-width:92%}.input-row{gap:10px}.send-btn{padding:0 16px}}
