:root{--color-primary: #0f6b4b;--color-primary-dark: #0b4a34;--color-accent: #c99a3c;--color-bg: #eef3f2;--color-surface: #ffffff;--color-border: #d9e2ec;--color-text: #102a43;--color-text-muted: #52606d;--color-danger: #c0392b;--radius: 10px;--shadow: 0 12px 32px rgba(16, 42, 67, .08);color:var(--color-text);background:var(--color-bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px}a{color:inherit}button,input,select,textarea{font:inherit}.app{display:flex;min-height:100vh}.sidebar{width:260px;flex-shrink:0;background:var(--color-primary-dark);color:#fff;position:fixed;height:100vh;overflow-y:auto;z-index:100;border-right:3px solid var(--color-accent);transition:transform .25s ease}.brand{display:flex;align-items:center;justify-content:center;padding:20px 16px;border-bottom:1px solid rgba(255,255,255,.12);text-decoration:none}.brand-logo{width:154px;height:84px;border-radius:10px;background:#fff;padding:6px;object-fit:contain;flex-shrink:0}.nav{padding:8px 0 24px}.nav-heading{padding:14px 16px 6px;color:#ffffff73;font-size:.65rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 16px;color:#ffffffd1;font-size:.88rem;text-decoration:none;border-left:3px solid transparent;cursor:pointer;transition:background .15s ease,color .15s ease}.nav-item:hover{background:#ffffff0f;color:#fff}.nav-item.active{background:#c99a3c29;color:var(--color-accent);border-left-color:var(--color-accent)}.main{margin-left:260px;flex:1;min-width:0;display:flex;flex-direction:column;min-height:100vh}.topbar{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:0;z-index:50}.menu-btn{display:none;align-items:center;justify-content:center;border:1px solid var(--color-border);border-radius:8px;width:36px;height:36px;color:var(--color-primary-dark);cursor:pointer;background:transparent}.topbar h1{margin:0;font-size:1.1rem;color:var(--color-text)}.topbar-user{color:var(--color-text-muted);font-size:.85rem}.page{flex:1;padding:24px;max-width:1240px;width:100%}.page>h2{margin:0 0 16px;font-size:1.35rem;color:var(--color-text)}.sidebar-scrim{display:none}@media (max-width: 992px){.main{margin-left:0}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.menu-btn{display:inline-flex}.sidebar.open+.main .sidebar-scrim,.sidebar-scrim.show{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:90}}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}.card h3{margin:0 0 10px;font-size:1.02rem;color:var(--color-text)}.card-header{background:var(--color-primary-dark);color:#fff;padding:16px 20px;border-radius:var(--radius);margin-bottom:16px;display:flex;align-items:center;gap:10px}.card-header h2{margin:0;color:var(--color-accent);font-size:1.1rem}.grid-2,.grid-3{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.hero{text-align:center;padding:32px 20px;background:linear-gradient(135deg,var(--color-primary-dark),var(--color-primary));color:#fff;border-radius:var(--radius);margin-bottom:20px;box-shadow:var(--shadow)}.hero h1{margin:0 0 8px;color:var(--color-accent);font-size:1.9rem}.hero p{margin:0 0 20px;opacity:.92}.search-box{display:flex;gap:8px;max-width:760px;margin:0 auto}.search-box select{width:150px;flex-shrink:0}.search-box input{flex:1;min-width:0}.search-filters{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:16px}.search-filters label{display:flex;align-items:center;gap:6px;background:#ffffff1f;padding:6px 10px;border-radius:6px;font-size:.84rem}.search-filters input[type=text]{width:100px;padding:4px 6px;border:1px solid rgba(255,255,255,.35);border-radius:4px;background:#ffffff1f;color:#fff}.search-filters select{min-width:170px}input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--color-border);border-radius:8px;font-size:.9rem;background:var(--color-surface);color:var(--color-text)}textarea{min-height:110px;resize:vertical}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #0f6b4b24}.field{margin-bottom:10px}.field label{display:block;font-size:.8rem;font-weight:700;color:var(--color-text-muted);margin-bottom:4px}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:8px;font-weight:700;font-size:.85rem;border:none;cursor:pointer;text-decoration:none;transition:background .15s ease,transform .1s ease}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:#e4ecea;color:var(--color-text)}.btn-secondary:hover{background:#d3dfdb}.btn-danger{background:var(--color-danger);color:#fff}.btn:disabled{opacity:.6;cursor:not-allowed}.result-list{display:grid;gap:10px}.result-card{background:var(--color-surface);border:1px solid var(--color-border);border-left:4px solid var(--color-accent);border-radius:8px;padding:16px}.result-card.repo{border-left-color:var(--color-primary);background:#f4faf8}.result-card h3{margin:0 0 6px;font-size:1rem}.result-card h3 a{color:var(--color-primary-dark);text-decoration:none}.result-card h3 a:hover{text-decoration:underline}.result-meta{font-size:.82rem;color:var(--color-text-muted);margin-bottom:6px;display:flex;flex-wrap:wrap;align-items:center;gap:6px}.result-abstract{font-size:.85rem;color:#334e68;margin:6px 0}.result-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}.result-actions .btn{padding:5px 10px;font-size:.78rem}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:.68rem;font-weight:700}.badge-oa{background:#d4edda;color:#155724}.badge-src{background:#e9ecef;color:#495057}.badge-primary{background:var(--color-primary-dark);color:var(--color-accent)}.badge-thesis{background:#cce5ff;color:#004085}.badge-repo{background:#fff3cd;color:#856404}.empty-state{text-align:center;color:var(--color-text-muted);padding:24px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}.stat{background:var(--color-surface);border:1px solid var(--color-border);border-top:3px solid var(--color-accent);border-radius:var(--radius);padding:14px;text-align:center}.stat h4{margin:0 0 6px;font-size:.76rem;color:var(--color-text-muted);font-weight:700}.stat .value{font-size:1.5rem;font-weight:800;color:var(--color-primary-dark)}.tool-output{margin-top:12px;padding:14px;background:var(--color-bg);border-left:3px solid var(--color-accent);border-radius:8px;font-size:.86rem;white-space:pre-wrap;max-height:380px;overflow-y:auto}.tool-output.error{border-left-color:var(--color-danger);color:#7a271a}.file-drop{border:2px dashed var(--color-border);border-radius:8px;padding:28px;text-align:center;cursor:pointer;background:var(--color-bg);color:var(--color-text-muted)}.file-drop:hover{border-color:var(--color-primary)}.chip-list{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;background:var(--color-bg);border:1px solid var(--color-border);font-size:.8rem;color:var(--color-text)}.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--color-primary)}.pwa-banner{background:linear-gradient(135deg,var(--color-primary-dark),var(--color-primary));color:#fff;padding:20px;border-radius:12px;margin-bottom:20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}.pwa-banner-text{flex:1;min-width:220px}.pwa-banner h3{margin:0 0 6px;color:var(--color-accent);font-size:1.15rem}.pwa-banner p{margin:0 0 12px;font-size:.92rem;opacity:.92}.pwa-actions{display:flex;gap:8px;flex-wrap:wrap}.pwa-actions .btn-secondary{background:#ffffff29;color:#fff}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;z-index:300;display:flex;align-items:center;justify-content:center;padding:16px}.modal{background:var(--color-surface);border-radius:12px;padding:24px;max-width:440px;width:100%;box-shadow:0 20px 48px #0000004d}.modal h3{margin:0 0 14px;color:var(--color-primary-dark)}.modal ol{padding-left:20px;line-height:1.8}.chat-fab{position:fixed;bottom:24px;right:24px;width:52px;height:52px;border-radius:50%;background:var(--color-accent);color:var(--color-primary-dark);display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px #0003;z-index:400;border:none;cursor:pointer;transition:transform .15s ease}.chat-fab:hover{transform:scale(1.08)}.chat-window{position:fixed;bottom:88px;right:24px;width:380px;max-width:calc(100vw - 32px);height:540px;max-height:calc(100vh - 120px);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 20px 48px #00000038;z-index:400;display:flex;flex-direction:column;overflow:hidden}.chat-header{background:var(--color-primary-dark);color:#fff;padding:12px 14px;display:flex;align-items:center;justify-content:space-between}.chat-header h3{margin:0;font-size:.95rem;color:var(--color-accent)}.chat-header button{background:none;border:none;color:#fff;cursor:pointer;display:flex}.chat-messages{flex:1;overflow-y:auto;padding:12px;background:var(--color-bg);display:flex;flex-direction:column;gap:8px}.chat-msg{padding:8px 12px;border-radius:10px;max-width:85%;font-size:.85rem;line-height:1.45;white-space:pre-wrap}.chat-msg.user{background:var(--color-accent);color:var(--color-primary-dark);align-self:flex-end}.chat-msg.bot{background:var(--color-surface);border:1px solid var(--color-border);align-self:flex-start}.chat-actions{display:flex;gap:6px;flex-wrap:wrap;padding:8px 10px;border-top:1px solid var(--color-border)}.chat-actions .btn{padding:4px 9px;font-size:.72rem}.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--color-border)}.chat-input input{flex:1}.site-footer{border-top:1px solid var(--color-border);background:var(--color-primary-dark);color:#ffffffc7;padding:14px 24px;font-size:.8rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}.state-panel{display:flex;align-items:center;justify-content:center;gap:10px;padding:26px;color:var(--color-text-muted);border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface)}.spinner{width:18px;height:18px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:8px}.offer-grid .offer-item{padding:16px;background:var(--color-bg);border-radius:8px;border-left:4px solid var(--color-accent)}.offer-item strong{display:block;color:var(--color-primary-dark);margin-bottom:6px}@media (max-width: 768px){.search-box{flex-direction:column}.search-box select{width:100%}.chat-window{right:16px;left:16px;width:auto}}