:root{--bg:#0f1117;--surface:#1a1d27;--surface2:#232733;--border:#2e3344;--text:#e1e4ed;--text-dim:#8b90a0;--accent:#6c63ff;--accent-glow:#6c63ff26;--green:#34d399;--yellow:#fbbf24;--red:#f87171;--blue:#60a5fa;--pubmed:#e879a0;--ct:#60a5fa}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:SF Pro Display,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow-x:hidden}.container{max-width:900px;margin:0 auto;padding:40px 24px}.header{text-align:center;margin-bottom:48px}.header h1{letter-spacing:-.5px;background:linear-gradient(135deg,#6c63ff,#60a5fa);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:32px;font-weight:700}.header p{color:var(--text-dim);font-size:15px}.status-bar{justify-content:center;gap:20px;margin-top:16px;display:flex}.status-dot{color:var(--text-dim);align-items:center;gap:6px;font-size:12px;display:flex}.search-section{margin-bottom:32px}.search-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;gap:8px;padding:6px;transition:border-color .2s,box-shadow .2s;display:flex}.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.search-box input{color:var(--text);background:0 0;border:none;outline:none;flex:1;padding:14px 16px;font-family:inherit;font-size:15px}.search-box input::placeholder{color:var(--text-dim)}.search-box button{background:var(--accent);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:12px;padding:14px 28px;font-family:inherit;font-size:14px;font-weight:600;transition:opacity .2s,transform .1s}.search-box button:hover{opacity:.9}.search-box button:active{transform:scale(.97)}.search-box button:disabled{opacity:.5;cursor:not-allowed}.filters{flex-wrap:wrap;gap:10px;margin-top:12px;display:flex}.filter-chip{background:var(--surface);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:20px;padding:6px 14px;font-size:12px;transition:all .2s}.filter-chip:hover{border-color:var(--accent);color:var(--text)}.filter-chip.active{background:var(--accent-glow);border-color:var(--accent);color:var(--accent)}.examples{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.example-btn{background:var(--surface2);color:var(--text-dim);cursor:pointer;border:1px solid #0000;border-radius:8px;padding:8px 14px;font-family:inherit;font-size:12px;transition:all .2s}.example-btn:hover{color:var(--text);border-color:var(--border)}.loading-section{text-align:center;padding:60px 20px;animation:.3s fadeIn}.loading-section.visible{display:block}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:40px;height:40px;margin:0 auto 24px;animation:.8s linear infinite spin}.loading-steps{flex-direction:column;gap:10px;max-width:340px;margin:0 auto;display:flex}.step{color:var(--text-dim);align-items:center;gap:10px;font-size:13px;transition:color .3s;display:flex}.step.active{color:var(--text)}.step.done{color:var(--green)}.step-icon{border:2px solid var(--border);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:10px;transition:all .3s;display:flex}.step.active .step-icon{border-color:var(--accent);background:var(--accent-glow)}.step.done .step-icon{border-color:var(--green);color:var(--green);background:#34d3991a}.result-section{animation:.4s fadeIn}.result-section.visible{display:block}.result-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;margin-bottom:20px;overflow:hidden}.result-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.result-header h2{font-size:16px;font-weight:600}.confidence-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:6px;padding:4px 10px;font-size:11px;font-weight:600}.confidence-badge.high{color:var(--green);background:#34d3991a}.confidence-badge.medium{color:var(--yellow);background:#fbbf241a}.confidence-badge.low{color:var(--red);background:#f871711a}.answer-body{color:var(--text);padding:24px;font-size:14px;line-height:1.75}.answer-body p{margin-bottom:12px}.answer-body p:last-child{margin-bottom:0}.cite-ref{color:var(--accent);vertical-align:super;font-size:12px;font-weight:600}.meta-bar{border-top:1px solid var(--border);color:var(--text-dim);gap:24px;padding:14px 24px;font-size:12px;display:flex}.meta-item{align-items:center;gap:6px;display:flex}.citations-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden}.citations-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 24px;font-size:14px;font-weight:600;display:flex}.citations-count{color:var(--text-dim);font-size:12px;font-weight:400}.citation-item{border-bottom:1px solid var(--border);gap:14px;padding:14px 24px;transition:background .15s;display:flex}.citation-item:last-child{border-bottom:none}.citation-item:hover{background:var(--surface2)}.citation-num{color:var(--accent);background:var(--accent-glow);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;margin-top:2px;font-size:11px;font-weight:700;display:flex}.citation-content{flex:1;min-width:0}.citation-title{margin-bottom:4px;font-size:13px;font-weight:500;line-height:1.4}.citation-title a{color:var(--text);text-decoration:none;transition:color .15s}.citation-title a:hover{color:var(--accent)}.citation-meta{align-items:center;gap:10px;display:flex}.source-tag{text-transform:uppercase;letter-spacing:.5px;border-radius:4px;padding:2px 8px;font-size:10px;font-weight:600}.source-tag.clinicaltrials{color:var(--ct);background:#60a5fa1a}.source-tag.pubmed{color:var(--pubmed);background:#e879a01a}.citation-id{color:var(--text-dim);font-family:SF Mono,Monaco,Courier New,monospace;font-size:11px}.citation-snippet{color:var(--text-dim);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:6px;font-size:12px;line-height:1.5;display:-webkit-box;overflow:hidden}.error-msg{color:var(--red);background:#f8717114;border:1px solid #f8717133;border-radius:12px;margin-bottom:20px;padding:16px 20px;font-size:13px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}