:root,[data-theme=light]{--bg-1: #dfe7f7;--bg-2: #eef0fb;--bg-3: #f4eefb;--text: #272a3a;--text-muted: #8a8fa6;--surface: #ffffff;--surface-2: #f1f3fa;--sidebar-bg: #f6f7fc;--border: #e6e9f3;--bubble-assistant: #ffffff;--bubble-user: #2b2f49;--bubble-user-text: #ffffff;--accent: #6c7cff;--accent-2: #b58cff;--shadow: 0 8px 26px rgba(50, 60, 110, .1);--shadow-sm: 0 2px 10px rgba(50, 60, 110, .06)}[data-theme=dark]{--bg-1: #1a1f36;--bg-2: #12141f;--bg-3: #1c1633;--text: #e7e9f4;--text-muted: #9095ad;--surface: #232738;--surface-2: #1b1e2c;--sidebar-bg: #15171f;--border: #2d3144;--bubble-assistant: #262a3c;--bubble-user: #5566e6;--bubble-user-text: #ffffff;--accent: #7c8cff;--accent-2: #b58cff;--shadow: 0 10px 30px rgba(0, 0, 0, .4);--shadow-sm: 0 2px 12px rgba(0, 0, 0, .3)}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;font-family:DM Sans,system-ui,-apple-system,sans-serif;color:var(--text)}.layout{display:grid;grid-template-columns:290px 1fr;height:100vh}.sidebar{background:var(--sidebar-bg);border-right:1px solid var(--border);padding:22px 18px;display:flex;flex-direction:column;overflow-y:auto}.sidebar-logo{font-family:"DM Serif Display",serif;font-size:26px;letter-spacing:-.5px;color:var(--text)}.sidebar-sub{font-size:11px;color:var(--text-muted);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:16px}.section-label{font-size:10px;letter-spacing:1.6px;text-transform:uppercase;color:var(--text-muted);margin:18px 0 8px}.sidebar-spacer{flex:1}.sidebar-foot{margin-top:18px;border-top:1px solid var(--border);padding-top:12px;font-size:12px}.privacy-note{color:var(--text-muted);font-size:11px;line-height:1.5;margin-top:8px}.dot{font-size:12px;color:var(--text-muted)}.dot.ok{color:#36c98a}.dot.bad{color:#e06a6a}.seg{display:flex;gap:6px}.seg-btn{flex:1;background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);padding:8px 6px;border-radius:9px;cursor:pointer;font-size:12.5px;font-family:inherit}.seg-btn.active{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;font-weight:600}.text-input{width:100%;margin-top:8px;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:9px 10px;border-radius:9px;font-size:13px;font-family:inherit}.hint{font-size:11px;color:var(--text-muted);margin-top:8px;line-height:1.5}.doc-pill{background:var(--surface);border:1px solid var(--border);border-radius:7px;padding:6px 10px;font-size:12px;color:var(--text-muted);margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.staged{margin-top:8px}.doc-link{display:block;width:100%;text-align:left;cursor:pointer;font-family:inherit}.doc-link:hover{border-color:var(--accent);color:var(--text)}.btn{width:100%;padding:9px 12px;border-radius:10px;cursor:pointer;font-size:13px;font-family:inherit;border:1px solid transparent;margin-top:8px}.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:600}.btn.primary:disabled{opacity:.6;cursor:default}.btn.ghost{background:var(--surface);border-color:var(--border);color:var(--text)}.btn.ghost.danger{color:#e07a7a}.main{display:flex;flex-direction:column;height:100vh;overflow:hidden;background:radial-gradient(1100px 500px at 25% -10%,var(--bg-1),transparent 60%),radial-gradient(900px 500px at 90% 0%,var(--bg-3),transparent 55%),linear-gradient(160deg,var(--bg-2),var(--bg-2))}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 26px;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.brand{display:flex;align-items:center;gap:12px}.brand-name{font-family:"DM Serif Display",serif;font-size:22px;line-height:1;color:var(--text)}.brand-sub{font-size:12px;color:var(--text-muted);margin-top:2px}.theme-toggle{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:16px;cursor:pointer;display:grid;place-items:center}.banner{margin:12px 26px 0;padding:10px 14px;border-radius:10px;font-size:13px}.banner.error{background:#fdecea;color:#a02020;border:1px solid #f5c6c0}.chat{flex:1;overflow-y:auto;padding:22px 16px}.chat-inner{max-width:760px;margin:0 auto}.welcome{text-align:center;padding:70px 20px}.welcome-title{font-family:"DM Serif Display",serif;font-size:30px;color:var(--text);margin:20px 0 8px}.welcome-sub{font-size:15px;color:var(--text-muted);max-width:420px;margin:0 auto;line-height:1.6}.msg{display:flex;margin:16px 0}.msg-assistant{gap:12px;align-items:flex-start}.msg-user{justify-content:flex-end}.msg-avatar{flex-shrink:0;margin-top:2px}.bubble{font-size:15px;line-height:1.65;border-radius:20px;padding:12px 16px;max-width:78%}.bubble-assistant{background:var(--bubble-assistant);border:1px solid var(--border);border-top-left-radius:6px;color:var(--text);box-shadow:var(--shadow-sm)}.bubble-user{background:var(--bubble-user);color:var(--bubble-user-text);border-bottom-right-radius:6px}.msg-text{white-space:pre-wrap}.cursor{color:var(--accent);animation:blink 1s steps(2,start) infinite}@keyframes blink{to{visibility:hidden}}.sources{margin-top:10px}.sources-toggle{background:var(--surface-2);border:1px solid var(--border);border-radius:9px;padding:5px 10px;font-size:12px;color:var(--text-muted);cursor:pointer;font-family:inherit}.chevron{margin-left:6px;font-size:9px}.sources-list{margin-top:8px}.source-card{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:10px 14px;margin:6px 0}.source-head{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.source-filename{font-weight:600;color:var(--text);font-size:13px}.source-page{color:var(--text-muted);font-size:12px}.conf-badge{border-radius:6px;padding:2px 8px;font-size:11px;font-weight:600;margin-left:auto}.conf-high{background:#e6f9ed;color:#1a7a40}.conf-mid{background:#fff8e1;color:#8a6000}.conf-low{background:#fdecea;color:#a02020}.source-excerpt{color:var(--text-muted);font-size:12px;margin-top:8px;font-style:italic;line-height:1.6;border-top:1px solid var(--border);padding-top:8px}.composer{padding:14px 16px 22px}.composer-inner{max-width:760px;margin:0 auto;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:6px 6px 6px 18px;box-shadow:var(--shadow)}.composer-input{flex:1;border:none;background:transparent;color:var(--text);font-size:15px;font-family:inherit;outline:none;padding:8px 0}.composer-input::placeholder{color:var(--text-muted)}.send-btn{flex-shrink:0;width:40px;height:40px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-size:18px;cursor:pointer;display:grid;place-items:center}.send-btn:disabled{opacity:.45;cursor:default}