:root{--bg: #0d1117;--surface: #161b22;--surface-2: #1c2128;--border: #30363d;--border-subtle: #21262d;--text: #e6edf3;--text-muted: #7d8590;--accent: #2f81f7;--accent-hover: #58a6ff;--high: #3fb950;--medium: #d29922;--low: #f85149;--user-bubble: #1a4a8a}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;height:100%}header{flex-shrink:0;display:flex;align-items:baseline;gap:10px;padding:14px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.logo{font-size:15px;font-weight:700;letter-spacing:-.3px;color:var(--text)}.tagline{font-size:12px;color:var(--text-muted)}main{flex:1;display:flex;flex-direction:column;overflow:hidden;max-width:760px;width:100%;margin:0 auto;padding:0 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.15s;font-family:inherit}.example-chip:hover{border-color:var(--accent);color:var(--accent)}.message-row{display:flex}.message-row.user{justify-content:flex-end}.message-row.assistant{justify-content:flex-start}.bubble{padding:10px 16px;border-radius:18px;font-size:14px;line-height:1.55;max-width:72%}.bubble.user{background:var(--user-bubble);color:#cde0ff;border-radius:18px 18px 4px}.bubble.error{background:var(--surface);border:1px solid rgba(248,81,73,.4);color:var(--low);border-radius:4px 18px 18px}.thinking-bubble{background:var(--surface);border:1px solid var(--border);border-radius:4px 18px 18px;padding:12px 16px;max-width:78%}.thinking-header{display:flex;align-items:center;gap:4px;color:var(--text-muted);font-size:12px;margin-bottom:8px}.dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:blink 1.3s ease-in-out infinite}.dot:nth-child(2){animation-delay:.2s}.dot:nth-child(3){animation-delay:.4s}@keyframes 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10px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.6px}.confidence-high{background:#3fb9501f;color:var(--high);border:1px solid rgba(63,185,80,.3)}.confidence-medium{background:#d299221f;color:var(--medium);border:1px solid rgba(210,153,34,.3)}.confidence-low{background:#f851491f;color:var(--low);border:1px solid rgba(248,81,73,.3)}.duty-block{display:flex;flex-direction:column;align-items:flex-end;gap:2px}.duty-value{font-family:SF Mono,Fira Code,ui-monospace,monospace;font-size:13px;font-weight:600;color:var(--text);background:var(--surface-2);border:1px solid var(--border-subtle);padding:2px 8px;border-radius:5px}.card-description{font-size:14px;color:var(--text);line-height:1.6;padding-bottom:2px;border-bottom:1px solid var(--border-subtle)}.toggle-reasoning{align-self:flex-start;background:none;border:none;color:var(--text-muted);font-size:12px;cursor:pointer;font-family:inherit;padding:0;transition:color 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var(--border)}.answers-form-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.answer-field{display:flex;flex-direction:column;gap:5px}.answer-label{font-size:13px;color:var(--text);line-height:1.4}.answer-input{background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text);font-family:inherit;font-size:14px;padding:9px 13px;outline:none;transition:border-color .15s}.answer-input:focus{border-color:var(--accent)}.answer-input::placeholder{color:var(--text-muted)}.answers-submit{align-self:flex-end;background:var(--accent);color:#fff;border:none;padding:10px 20px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s}.answers-submit:hover:not(:disabled){background:var(--accent-hover)}.answers-submit:disabled{opacity:.35;cursor:not-allowed}.input-bar{flex-shrink:0;display:flex;gap:8px;align-items:flex-end;padding:14px 0 20px;border-top:1px solid var(--border)}.input-bar textarea{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:12px;color:var(--text);font-family:inherit;font-size:14px;line-height:1.55;padding:11px 15px;resize:none;outline:none;transition:border-color .15s}.input-bar textarea:focus{border-color:var(--accent)}.input-bar textarea::placeholder{color:var(--text-muted)}.input-bar textarea:disabled{opacity:.45;cursor:not-allowed}.input-bar button{width:44px;height:44px;border-radius:12px;background:var(--accent);border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s;flex-shrink:0}.input-bar button:hover:not(:disabled){background:var(--accent-hover)}.input-bar button:disabled{opacity:.35;cursor:not-allowed}.btn-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.full-center{height:100%;display:flex;align-items:center;justify-content:center}.spinner{width:28px;height:28px;border:2.5px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}.auth-page{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:40px 20px;background:var(--bg)}.auth-logo{font-size:22px;font-weight:700;color:var(--text);letter-spacing:-.4px}.auth-tagline{font-size:13px;color:var(--text-muted);margin-bottom:8px}header{flex-shrink:0;display:flex;align-items:center;gap:10px;padding:12px 24px;background:var(--surface);border-bottom:1px solid var(--border)}.header-nav{margin-left:auto;display:flex;align-items:center;gap:4px}.nav-link{background:none;border:none;color:var(--text-muted);font-size:13px;font-family:inherit;padding:5px 10px;border-radius:6px;cursor:pointer;text-decoration:none;transition:color .15s,background .15s}.nav-link:hover,.nav-link.active{color:var(--text);background:var(--surface-2)}.nav-link.sign-out:hover{color:var(--low)}.usage-chip{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text-muted);background:var(--surface-2);border:1px solid var(--border-subtle);padding:4px 10px;border-radius:20px;margin-left:4px}.plan-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}.plan-dot.plan-free{background:var(--accent)}.plan-dot.plan-pro{background:var(--medium)}.plan-dot.plan-unlimited{background:var(--high)}.plan-dot.plan-none{background:var(--text-muted)}.layout-body{flex:1;overflow-y:auto;display:flex;flex-direction:column}.terms-page{flex:1;display:flex;align-items:flex-start;justify-content:center;padding:40px 20px;overflow-y:auto}.terms-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:36px 40px;max-width:680px;width:100%;display:flex;flex-direction:column;gap:24px}.terms-card h1{font-size:22px;font-weight:700}.terms-body{display:flex;flex-direction:column;gap:16px;max-height:420px;overflow-y:auto;padding-right:8px}.terms-body::-webkit-scrollbar{width:4px}.terms-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.terms-body h2{font-size:13px;font-weight:600;color:var(--accent-hover);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}.terms-body p{font-size:13px;color:var(--text-muted);line-height:1.7}.accept-btn{background:var(--accent);color:#fff;border:none;padding:12px 24px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .15s;align-self:flex-end}.accept-btn:hover:not(:disabled){background:var(--accent-hover)}.accept-btn:disabled{opacity:.4;cursor:not-allowed}.upgrade-page{flex:1;display:flex;flex-direction:column;align-items:center;padding:48px 24px;gap:32px;overflow-y:auto}.upgrade-header{text-align:center}.upgrade-header h1{font-size:26px;font-weight:700;margin-bottom:8px}.upgrade-header p{font-size:14px;color:var(--text-muted)}.plans-grid{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;max-width:900px;width:100%}.plan-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px 22px;flex:1;min-width:240px;max-width:280px;display:flex;flex-direction:column;gap:12px;position:relative}.plan-card.highlighted{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.plan-badge{position:absolute;top:-11px;left:50%;transform:translate(-50%);background:var(--accent);color:#fff;font-size:11px;font-weight:700;padding:3px 10px;border-radius:20px;white-space:nowrap}.plan-name{font-size:15px;font-weight:700}.plan-price{display:flex;align-items:baseline;gap:3px}.plan-amount{font-size:30px;font-weight:800}.plan-period{font-size:13px;color:var(--text-muted)}.plan-limit{font-size:13px;color:var(--accent-hover);font-weight:500}.plan-features{list-style:none;display:flex;flex-direction:column;gap:6px;flex:1}.plan-features li{font-size:13px;color:var(--text-muted);padding-left:16px;position:relative}.plan-features li:before{content:"✓";position:absolute;left:0;color:var(--high);font-weight:700}.plan-btn{width:100%;padding:10px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;border:none;transition:opacity .15s,background .15s}.plan-btn:disabled{opacity:.45;cursor:not-allowed}.plan-btn-primary{background:var(--accent);color:#fff}.plan-btn-primary:hover:not(:disabled){background:var(--accent-hover)}.plan-btn-secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}.plan-btn-secondary:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.dashboard{flex:1;display:flex;flex-direction:column;gap:0;max-width:900px;width:100%;margin:0 auto;padding:32px 24px;overflow-y:auto;position:relative}.dash-section{margin-bottom:28px}.dash-heading{font-size:14px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:12px}.dash-empty{font-size:14px;color:var(--text-muted)}.plan-summary-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.plan-summary-left{display:flex;align-items:center;gap:12px}.plan-summary-name{font-size:15px;font-weight:700;margin-bottom:2px}.plan-summary-usage{font-size:13px;color:var(--text-muted)}.portal-btn{background:var(--surface-2);border:1px solid var(--border);color:var(--text-muted);font-size:13px;font-family:inherit;padding:7px 14px;border-radius:7px;cursor:pointer;transition:border-color .15s,color .15s;white-space:nowrap}.portal-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.portal-btn:disabled{opacity:.4;cursor:not-allowed}.history-list{display:flex;flex-direction:column;gap:2px}.history-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:var(--surface);border:1px solid var(--border-subtle);border-radius:8px;cursor:pointer;transition:border-color .15s,background .15s}.history-row:hover,.history-row.active{border-color:var(--border);background:var(--surface-2)}.history-left{display:flex;flex-direction:column;gap:2px;min-width:0}.history-desc{font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-code{font-family:SF 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6px;border-radius:4px}.close-btn:hover{color:var(--text);background:var(--surface-2)}.detail-body{display:flex;flex-direction:column;gap:16px}.detail-desc{font-size:14px;color:var(--text);line-height:1.6}.detail-grid{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-end}.detail-field{display:flex;flex-direction:column;gap:4px}.recommendations{background:var(--surface);border:1px solid var(--border-subtle);border-radius:10px;padding:14px 16px;max-width:620px;display:flex;flex-direction:column;gap:10px}.rec-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-muted)}.rec-list{display:flex;flex-direction:column;gap:6px}.rec-item{display:flex;align-items:baseline;gap:10px;background:var(--surface-2);border-radius:7px;padding:8px 12px}.rec-desc{font-size:13px;color:var(--text);flex:1}.rec-code{font-family:SF Mono,ui-monospace,monospace;font-size:11px;color:var(--accent-hover);flex-shrink:0}