:root{--color-bg:#f5f6f9;--color-surface:#fff;--color-sidebar:#14162b;--color-sidebar-text:#b9bcd6;--color-sidebar-text-dim:#7c7f9e;--color-sidebar-active:#1f2240;--color-accent:#c1832f;--color-accent-dark:#a06b23;--color-text:#1b1d2a;--color-text-dim:#62667e;--color-border:#e3e5ec;--color-user-bubble:#eef0f6;--color-danger:#b3432f;--color-success:#3d7a53;--font-display:"Fraunces", Georgia, serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"IBM Plex Mono", monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:16px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}a{color:inherit}::selection{background:#c1832f40}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.app-shell{height:100vh;display:flex;overflow:hidden}.app-main{flex-direction:column;flex:1;min-width:0;display:flex}.sidebar{background:var(--color-sidebar);width:264px;color:var(--color-sidebar-text);flex-direction:column;flex-shrink:0;padding:20px 14px;display:flex}.sidebar-brand{align-items:center;gap:10px;padding:0 6px 20px;display:flex}.sidebar-brand-mark{background:var(--color-accent);color:#14162b;width:28px;height:28px;font-family:var(--font-display);border-radius:8px;justify-content:center;align-items:center;font-size:15px;font-weight:600;display:flex}.sidebar-brand-name{font-family:var(--font-display);color:#f1f2f8;letter-spacing:.2px;font-size:18px;font-weight:500}.new-chat-btn{border-radius:var(--radius-md);background:var(--color-sidebar-active);color:#f1f2f8;border:1px solid #ffffff1f;align-items:center;gap:8px;width:100%;padding:10px 12px;font-size:14px;font-weight:500;transition:background .15s;display:flex}.new-chat-btn:hover{background:#262a4d}.new-chat-icon{color:var(--color-accent);font-size:16px;line-height:1}.sidebar-section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--color-sidebar-text-dim);padding:20px 10px 8px;font-size:11px}.chat-list{flex-direction:column;flex:1;gap:2px;display:flex;overflow-y:auto}.chat-list-empty{color:var(--color-sidebar-text-dim);padding:10px;font-size:13px;line-height:1.5}.chat-list-item{border-radius:var(--radius-sm);cursor:pointer;color:var(--color-sidebar-text);align-items:center;gap:8px;padding:9px 10px;font-size:13.5px;display:flex}.chat-list-item:hover{background:#ffffff0d}.chat-list-item-active{background:var(--color-sidebar-active);color:#f1f2f8}.chat-status-dot{background:var(--color-accent);border-radius:50%;flex-shrink:0;width:6px;height:6px}.chat-status-resolved{background:#4a4e73}.chat-list-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.chat-list-item-delete{opacity:0;color:var(--color-sidebar-text-dim);background:0 0;border:none;padding:2px 4px;font-size:16px;line-height:1}.chat-list-item:hover .chat-list-item-delete{opacity:1}.chat-list-item-delete:hover{color:#f1f2f8}.header{border-bottom:1px solid var(--color-border);background:var(--color-surface);flex-shrink:0;justify-content:space-between;align-items:center;height:60px;padding:0 24px;display:flex}.header-title{color:var(--color-text-dim);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:500;overflow:hidden}.header-right{margin-left:auto}.auth-buttons{gap:10px;display:flex}.btn{border-radius:var(--radius-sm);border:none;padding:8px 16px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s,opacity .15s}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-ghost{color:var(--color-text);background:0 0}.btn-ghost:hover{background:var(--color-user-bubble)}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-dark)}.btn-outline{border:1px solid var(--color-border);color:var(--color-text);background:0 0}.btn-outline:hover{border-color:var(--color-accent);color:var(--color-accent-dark)}.btn-block{width:100%}.user-menu{position:relative}.user-pill{border:1px solid var(--color-border);background:0 0;border-radius:999px;align-items:center;gap:8px;padding:5px 12px 5px 5px;display:flex}.user-avatar{background:var(--color-accent);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;font-size:12px;font-weight:600;display:flex}.user-name{font-size:13.5px;font-weight:500}.user-dropdown{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);z-index:20;min-width:180px;padding:10px;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 8px 24px #14162b1f}.user-dropdown-email{color:var(--color-text-dim);border-bottom:1px solid var(--color-border);word-break:break-all;margin-bottom:6px;padding:4px 8px 8px;font-size:12px}.user-dropdown-item{text-align:left;border-radius:var(--radius-sm);background:0 0;border:none;width:100%;padding:8px;font-size:13.5px}.user-dropdown-item:hover{background:var(--color-user-bubble)}.global-error{color:var(--color-danger);background:#fbeceb;border-bottom:1px solid #f3d5d1;padding:8px 24px;font-size:13.5px}.chat-window{flex-direction:column;flex:1;min-height:0;display:flex}.chat-scroll{flex:1;padding:28px 0 12px;overflow-y:auto}.message-list{flex-direction:column;gap:18px;max-width:720px;margin:0 auto;padding:0 24px;display:flex}.message-row{display:flex}.message-row-user{justify-content:flex-end}.message-row-assistant{justify-content:flex-start}.message-bubble{max-width:100%;font-size:15px;line-height:1.6}.message-bubble-user{background:var(--color-user-bubble);border-radius:var(--radius-lg);border-top-right-radius:4px;max-width:75%;padding:10px 16px}.message-bubble-assistant{border-left:2px solid var(--color-accent);width:100%;padding-left:18px}.assistant-content p{margin:0 0 12px}.assistant-content p:last-child{margin-bottom:0}.assistant-content h1,.assistant-content h2,.assistant-content h3{font-family:var(--font-display);margin:18px 0 8px;font-weight:500}.assistant-content h1:first-child,.assistant-content h2:first-child,.assistant-content 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a{color:var(--color-accent-dark);text-decoration:none}.sources-list a:hover{text-decoration:underline}.option-group{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.option-pill{background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text);border-radius:999px;padding:8px 16px;font-size:13.5px;transition:border-color .15s,color .15s}.option-pill:hover{border-color:var(--color-accent);color:var(--color-accent-dark)}.satisfaction-check{border-top:1px solid var(--color-border);align-items:center;gap:12px;margin-top:16px;padding-top:12px;display:flex}.satisfaction-label{color:var(--color-text-dim);font-size:13.5px}.satisfaction-buttons{gap:8px;display:flex}.thinking-bubble{gap:5px;padding:10px 0;display:flex}.thinking-dot{background:var(--color-accent);border-radius:50%;width:6px;height:6px;animation:1.1s ease-in-out infinite thinking-pulse}.thinking-dot:nth-child(2){animation-delay:.15s}.thinking-dot:nth-child(3){animation-delay:.3s}@keyframes thinking-pulse{0%,80%,to{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}.empty-state{text-align:center;max-width:520px;margin:8vh auto 0;padding:0 24px}.empty-state-mark{background:var(--color-accent);color:#fff;width:44px;height:44px;font-family:var(--font-display);border-radius:12px;justify-content:center;align-items:center;margin:0 auto 20px;font-size:22px;font-weight:500;display:flex}.empty-state-title{font-family:var(--font-display);margin:0 0 10px;font-size:26px;font-weight:500}.empty-state-subtitle{color:var(--color-text-dim);margin:0;font-size:14.5px;line-height:1.6}.composer-wrap{flex-shrink:0;padding:12px 24px 22px}.composer{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);align-items:flex-end;gap:10px;max-width:720px;margin:0 auto;padding:10px 10px 10px 18px;display:flex}.composer-input{resize:none;max-height:160px;font-size:15px;line-height:1.5;font-family:var(--font-body);background:0 0;border:none;outline:none;flex:1}.composer-send{background:var(--color-accent);color:#fff;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;display:flex}.composer-send:hover:not(:disabled){background:var(--color-accent-dark)}.composer-send:disabled{opacity:.4;cursor:not-allowed}.composer-closed{text-align:center;max-width:720px;color:var(--color-text-dim);border:1px dashed var(--color-border);border-radius:var(--radius-md);margin:0 auto;padding:12px;font-size:13.5px}.modal-overlay{z-index:50;background:#14162b73;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--color-surface);border-radius:var(--radius-lg);width:100%;max-width:380px;padding:32px;position:relative;box-shadow:0 20px 60px #14162b40}.modal-close{color:var(--color-text-dim);background:0 0;border:none;padding:4px;font-size:20px;line-height:1;position:absolute;top:14px;right:14px}.modal-title{font-family:var(--font-display);margin:0 0 6px;font-size:22px;font-weight:500}.modal-subtitle{color:var(--color-text-dim);margin:0 0 22px;font-size:13.5px}.auth-form{flex-direction:column;gap:14px;display:flex}.field{flex-direction:column;gap:6px;display:flex}.field-label{color:var(--color-text-dim);font-size:12.5px;font-weight:500}.field input{border:1px solid var(--color-border);border-radius:var(--radius-sm);outline:none;padding:10px 12px;font-size:14px}.field input:focus{border-color:var(--color-accent)}.form-error{color:var(--color-danger);border-radius:var(--radius-sm);background:#fbeceb;padding:8px 12px;font-size:13px}.modal-switch{color:var(--color-text-dim);text-align:center;margin-top:18px;font-size:13.5px}.link-btn{color:var(--color-accent-dark);font-weight:500;font-size:inherit;background:0 0;border:none;padding:0}@media (width<=720px){.sidebar{z-index:30;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.message-bubble-user{max-width:88%}}