@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap";:root{--primary: #0ea5e9;--primary-dark: #0284c7;--primary-light: #38bdf8;--purple: #7c3aed;--purple-light: #a855f7;--green: #059669;--red: #dc2626;--yellow: #d97706;--bg: #f0f9ff;--bg-card: #ffffff;--bg-hover: #f8fafc;--border: #e2e8f0;--border-blue: #bae6fd;--shadow: rgba(14, 165, 233, .08);--shadow-md: rgba(0,0,0,.1);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--font: "Inter", system-ui, sans-serif;--mono: "IBM Plex Mono", monospace;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text-primary);line-height:1.6;min-height:100vh}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1100px;margin:0 auto;padding:0 1.25rem}.app{display:flex;flex-direction:column;min-height:100vh}.app-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:1rem;color:var(--text-muted)}.header{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:.9rem 0;box-shadow:0 2px 12px #0284c740;position:sticky;top:0;z-index:100}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.header-brand{display:flex;align-items:center;gap:.75rem}.header-logo{font-size:1.5rem}.header-name{font-size:1.3rem;font-weight:700;display:block}.header-tagline{font-size:.72rem;opacity:.8;display:block}.header-controls{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.header-user{font-size:.82rem;opacity:.85}.prof-toggle{display:flex;background:#ffffff26;border-radius:8px;overflow:hidden}.prof-btn{padding:.35rem .75rem;border:none;background:none;color:#ffffffbf;font-size:.82rem;font-weight:600;cursor:pointer;transition:all .2s}.prof-btn.active{background:#fff;color:var(--primary-dark);border-radius:7px}.admin-btn,.logout-btn{padding:.35rem .8rem;border:1px solid rgba(255,255,255,.4);background:#ffffff26;color:#fff;border-radius:6px;font-size:.82rem;cursor:pointer;transition:.2s}.admin-btn:hover,.logout-btn:hover{background:#ffffff40}.nav-tabs{background:#fff;border-bottom:2px solid var(--border-blue);position:sticky;top:58px;z-index:90}.nav-inner{display:flex;gap:0;overflow-x:auto}.nav-tab{padding:.85rem 1.4rem;border:none;background:none;font-size:.9rem;font-weight:600;color:var(--text-muted);cursor:pointer;position:relative;transition:color .2s;white-space:nowrap}.nav-tab.active{color:var(--primary)}.nav-tab.active:after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:2px;background:var(--tab-accent, var(--primary))}.nav-tab:hover:not(.active){color:var(--text-secondary);background:var(--bg-hover)}.main-content{flex:1;padding:2rem 0 5rem}.search-section{background:var(--bg-card);border-radius:var(--radius-lg);padding:2rem;box-shadow:0 4px 12px var(--shadow);margin-bottom:1.5rem;border:1px solid var(--border-blue)}.search-header{text-align:center;margin-bottom:1.5rem}.search-header h2{font-size:1.5rem;color:var(--text-primary);margin-bottom:.3rem}.search-header p{color:var(--text-muted);font-size:.9rem}.search-form{display:flex;flex-direction:column;gap:.9rem}.search-textarea{width:100%;padding:.9rem 1rem;border:2px solid var(--border);border-radius:var(--radius);font-size:1rem;font-family:var(--font);resize:vertical;transition:border-color .2s;background:#fafcff}.search-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0ea5e91a}.search-textarea:disabled{opacity:.6;cursor:not-allowed}.filter-row{display:flex;gap:.75rem}.filter-select{flex:1;padding:.75rem 1rem;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:.9rem;font-family:var(--font);background:#fff;cursor:pointer;transition:border-color .2s}.filter-select:focus{outline:none;border-color:var(--primary)}.filter-select:disabled{opacity:.6}.search-button{padding:.75rem 1.75rem;background:linear-gradient(135deg,var(--primary-dark),var(--primary-light));color:#fff;border:none;border-radius:var(--radius-sm);font-size:.95rem;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:.5rem;white-space:nowrap;box-shadow:0 4px 10px #0ea5e94d;transition:all .2s}.search-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px #0ea5e966}.search-button:disabled{opacity:.65;cursor:not-allowed;transform:none}.exemplos-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}.exemplo-chip{padding:.4rem .9rem;background:var(--bg);border:1px solid var(--border-blue);border-radius:20px;font-size:.82rem;color:var(--primary-dark);cursor:pointer;transition:all .15s}.exemplo-chip:hover:not(:disabled){background:#e0f2fe;border-color:var(--primary)}.history-wrapper{position:relative;margin-bottom:1rem}.history-toggle{background:none;border:1px solid var(--border);padding:.4rem .9rem;border-radius:6px;font-size:.82rem;color:var(--text-muted);cursor:pointer}.history-toggle:hover{background:var(--bg-hover)}.history-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 24px var(--shadow-md);z-index:200;overflow:hidden}.history-item{display:flex;justify-content:space-between;align-items:center;width:100%;padding:.7rem 1rem;border:none;background:none;text-align:left;cursor:pointer;gap:1rem;transition:background .15s}.history-item:hover{background:var(--bg-hover)}.history-q{font-size:.88rem;color:var(--text-primary)}.history-ts{font-size:.75rem;color:var(--text-muted);white-space:nowrap}.results-section{animation:fadeInUp .4s ease}.results-meta{font-size:.82rem;color:var(--text-muted);text-align:right;margin-bottom:.75rem}.sintese-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-blue);box-shadow:0 4px 12px var(--shadow);margin-bottom:1.5rem;overflow:hidden}.sintese-header{padding:.9rem 1.5rem;background:linear-gradient(90deg,#e0f2fe,#f0f9ff);font-weight:700;font-size:1rem;color:var(--primary-dark);display:flex;align-items:center;gap:.5rem;border-bottom:1px solid var(--border-blue)}.ai-badge{background:var(--primary);color:#fff;font-size:.65rem;font-weight:700;padding:.15rem .5rem;border-radius:4px;letter-spacing:.05em}.sintese-text{padding:1.5rem;font-size:.95rem;line-height:1.75;color:var(--text-secondary);white-space:pre-wrap}.ref-tag{background:#e0f2fe;color:var(--primary-dark);font-family:var(--mono);font-size:.78rem;padding:.1rem .35rem;border-radius:4px}.fontes-section{margin-bottom:1.5rem}.fontes-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem;flex-wrap:wrap;gap:.5rem}.fontes-header h3{font-size:1rem;color:var(--text-secondary)}.legend{display:flex;gap:1rem;flex-wrap:wrap}.legend-item{display:flex;align-items:center;gap:.35rem;font-size:.8rem;color:var(--text-muted)}.legend-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.fontes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}.fonte-card{background:#fff;border-radius:var(--radius);border:1px solid var(--border);padding:1rem;text-decoration:none;color:inherit;transition:all .2s;display:flex;flex-direction:column;gap:.3rem}.fonte-card:hover{border-color:var(--primary);box-shadow:0 4px 12px var(--shadow);transform:translateY(-2px)}.fonte-header{display:flex;justify-content:space-between;align-items:center}.fonte-tipo{font-size:.75rem;font-weight:600}.fonte-relevancia{font-size:.78rem;color:var(--green);font-weight:600}.fonte-titulo{font-size:.88rem;font-weight:600;color:var(--text-primary)}.fonte-ano{font-size:.75rem;color:var(--text-muted)}.feedback-bar{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:#f8fafc;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.88rem;color:var(--text-muted);margin-bottom:1rem;flex-wrap:wrap}.feedback-btn{padding:.3rem .8rem;border-radius:6px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:.85rem;transition:all .15s}.feedback-btn.pos:hover{border-color:var(--green);background:#dcfce7}.feedback-btn.neg:hover{border-color:var(--red);background:#fee2e2}.disclaimer-bar{padding:.65rem 1rem;background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius-sm);font-size:.8rem;color:#92400e;margin-top:.5rem}.error-card{padding:1rem 1.25rem;background:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius);color:var(--red);font-size:.9rem;margin-bottom:1rem}.assistente-section{animation:fadeInUp .3s ease}.assistente-header{text-align:center;margin-bottom:1.5rem}.assistente-header h2{font-size:1.5rem}.assistente-header p{color:var(--text-muted);font-size:.9rem}.assistente-modes{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}.mode-card{background:#fff;border:2px solid var(--border);border-radius:var(--radius);padding:1.1rem;cursor:pointer;text-align:left;transition:all .2s;display:flex;flex-direction:column;gap:.25rem}.mode-card:hover{border-color:var(--primary);box-shadow:0 4px 12px var(--shadow)}.mode-card.active{background:#f0f9ff}.mode-icon{font-size:1.5rem}.mode-label{font-size:.92rem;font-weight:700;color:var(--text-primary)}.mode-desc{font-size:.78rem;color:var(--text-muted)}.chat-form{display:flex;flex-direction:column;gap:.9rem;margin-bottom:1rem}.chat-textarea{width:100%;padding:.9rem 1rem;border:2px solid var(--border);border-radius:var(--radius);font-size:.95rem;font-family:var(--font);resize:vertical;transition:border-color .2s}.chat-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0ea5e91a}.chat-answer{animation:fadeInUp .4s ease}.cientifica-wrapper{animation:fadeInUp .3s ease}.cientifica-header{text-align:center;margin-bottom:1.5rem}.cientifica-header h2{font-size:1.5rem;margin-bottom:.3rem}.cientifica-header p{color:var(--text-muted);font-size:.9rem;margin-bottom:.75rem}.sci-sources-badge{display:flex;align-items:center;justify-content:center;gap:.5rem;flex-wrap:wrap}.sci-sources-badge span{font-size:.82rem;color:var(--text-muted)}.badge{background:#e0f2fe;color:var(--primary-dark);font-size:.78rem;font-weight:600;padding:.2rem .65rem;border-radius:20px}.badge-note{font-size:.75rem;color:var(--text-muted)}.sci-search-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-blue);padding:1.75rem;box-shadow:0 4px 12px var(--shadow);margin-bottom:1.5rem}.sci-textarea-wrapper{display:flex;flex-direction:column;gap:.9rem}.sci-textarea{width:100%;padding:.9rem 1rem;border:2px solid var(--border);border-radius:var(--radius);font-size:1rem;font-family:var(--font);resize:vertical;transition:border-color .2s;background:#fafcff}.sci-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0ea5e91a}.sci-textarea:disabled{opacity:.6}.sci-form-row{display:flex;gap:.75rem;align-items:stretch}.sci-select{padding:.75rem 1rem;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:.9rem;font-family:var(--font);background:#fff;cursor:pointer;min-width:140px}.sci-search-btn{flex:1;padding:.75rem 1.5rem;background:linear-gradient(135deg,var(--primary-dark),var(--primary-light));color:#fff;border:none;border-radius:var(--radius-sm);font-size:.95rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:0 4px 10px #0ea5e94d;transition:all .2s}.sci-search-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px #0ea5e966}.sci-search-btn:disabled{opacity:.65;cursor:not-allowed;transform:none}.sci-exemplos{margin-top:1rem}.sci-exemplos-label{font-size:.78rem;font-weight:600;color:var(--text-muted);display:block;margin-bottom:.5rem}.sci-exemplos-list{display:flex;flex-wrap:wrap;gap:.4rem}.sci-exemplo-chip{padding:.35rem .85rem;background:var(--bg);border:1px solid var(--border-blue);border-radius:20px;font-size:.78rem;color:var(--primary-dark);cursor:pointer;transition:all .15s}.sci-exemplo-chip:hover:not(:disabled){background:#e0f2fe;border-color:var(--primary)}.sci-loading{padding:2rem 1rem;text-align:center}.sci-loading-steps{display:flex;flex-direction:column;gap:.5rem;align-items:center;margin-bottom:1rem}.sci-step{display:flex;align-items:center;gap:.75rem;font-size:.9rem;color:var(--text-secondary)}.step-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);animation:pulse 1.2s infinite}.sci-loading-tip{font-size:.8rem;color:var(--text-muted);font-style:italic}.sci-results{animation:fadeInUp .4s ease}.sci-error{padding:1rem 1.25rem;background:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius);color:var(--red);font-size:.9rem;margin-bottom:1rem}.sci-meta-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;padding:.65rem 1rem;background:#f0f9ff;border-radius:var(--radius-sm);border:1px solid var(--border-blue)}.sci-meta-left{display:flex;align-items:center;gap:1rem}.sci-artigos-count{font-size:.88rem;font-weight:600;color:var(--primary-dark)}.sci-tempo{font-size:.78rem;color:var(--text-muted)}.sci-query-translated{font-size:.8rem;color:var(--text-muted);display:flex;align-items:center;gap:.35rem}.sci-query-label{font-weight:600}.sci-sintese-card{background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border-blue);box-shadow:0 4px 12px var(--shadow);margin-bottom:1.75rem;overflow:hidden}.sci-sintese-header{padding:.9rem 1.5rem;background:linear-gradient(90deg,#e0f2fe,#f0f9ff);font-weight:700;font-size:1rem;color:var(--primary-dark);display:flex;align-items:center;gap:.5rem;border-bottom:1px solid var(--border-blue)}.sci-ai-badge{background:var(--primary);color:#fff;font-size:.65rem;font-weight:700;padding:.15rem .5rem;border-radius:4px}.sci-sintese-body{padding:1.5rem}.sintese-markdown{font-size:.95rem;line-height:1.8;color:var(--text-secondary)}.sintese-section-header{font-size:1rem;font-weight:700;color:var(--text-primary);margin:1.25rem 0 .5rem;padding-left:.75rem;border-left:3px solid var(--primary)}.sintese-para{margin-bottom:.85rem}.sintese-bullet{margin-bottom:.5rem;padding-left:.5rem}.ref-num{background:#dbeafe;color:#1e40af;font-family:var(--mono);font-size:.78rem;padding:.05rem .35rem;border-radius:4px;cursor:default}.sci-papers-section{margin-bottom:1.5rem}.sci-papers-title{font-size:1rem;font-weight:700;color:var(--text-secondary);margin-bottom:1rem}.sci-papers-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1rem}.paper-card{background:#fff;border-radius:var(--radius);border:1px solid var(--border);padding:1.1rem;display:flex;flex-direction:column;gap:.5rem;transition:all .2s}.paper-card:hover{border-color:var(--primary);box-shadow:0 4px 12px var(--shadow)}.paper-card-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem}.paper-index{font-family:var(--mono);font-size:.78rem;color:var(--primary);font-weight:700}.paper-meta{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.paper-fonte-badge{font-size:.7rem;font-weight:600;padding:.15rem .5rem;border-radius:4px}.paper-fonte-badge[data-fonte="Semantic Scholar"]{background:#fce7f3;color:#be185d}.paper-fonte-badge[data-fonte=PubMed]{background:#dcfce7;color:#15803d}.paper-year{font-size:.78rem;color:var(--text-muted)}.paper-cites{font-size:.75rem;color:var(--text-muted)}.paper-title{font-size:.9rem;font-weight:700;color:var(--text-primary);line-height:1.4}.paper-authors,.paper-journal{font-size:.78rem;color:var(--text-muted)}.paper-abstract-wrapper{position:relative}.paper-abstract{font-size:.8rem;color:var(--text-secondary);line-height:1.6;max-height:4.5em;overflow:hidden;transition:max-height .3s ease}.paper-abstract.expanded{max-height:200px;overflow-y:auto}.paper-expand-btn{background:none;border:none;color:var(--primary);font-size:.75rem;cursor:pointer;padding:.2rem 0;margin-top:.2rem}.paper-card-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;margin-top:.25rem}.paper-link-btn{display:inline-flex;align-items:center;gap:.35rem;font-size:.82rem;font-weight:600;color:var(--primary);background:#e0f2fe;padding:.35rem .75rem;border-radius:6px;text-decoration:none;transition:all .15s}.paper-link-btn:hover{background:#bae6fd;text-decoration:none}.paper-no-link{font-size:.75rem;color:var(--text-muted)}.paper-doi{font-size:.7rem;color:var(--text-muted);font-family:var(--mono)}.sci-disclaimer{padding:.75rem 1rem;background:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius-sm);font-size:.8rem;color:#92400e;margin-top:.5rem}.login-bg{min-height:100vh;background:linear-gradient(135deg,#0c4a6e,#0ea5e9 60%,#7c3aed);display:flex;align-items:center;justify-content:center;padding:1.5rem}.login-card{background:#fff;border-radius:20px;padding:2.25rem;width:100%;max-width:400px;box-shadow:0 20px 60px #0003}.login-header{text-align:center;margin-bottom:1.5rem}.login-logo{display:flex;align-items:center;justify-content:center;gap:.6rem;margin-bottom:.4rem}.login-logo-icon{font-size:2rem}.login-logo-text{font-size:1.6rem;font-weight:800;color:var(--text-primary)}.login-tagline{font-size:.85rem;color:var(--text-muted)}.login-tabs{display:flex;background:var(--bg);border-radius:8px;margin-bottom:1.25rem;overflow:hidden}.login-tab{flex:1;padding:.6rem;border:none;background:none;font-size:.88rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .15s}.login-tab.active{background:#fff;color:var(--primary);box-shadow:0 2px 6px var(--shadow-md);border-radius:7px}.login-alert{padding:.75rem 1rem;border-radius:var(--radius-sm);font-size:.85rem;margin-bottom:1rem}.login-alert-error{background:#fef2f2;border:1px solid #fecaca;color:var(--red)}.login-alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:var(--green)}.login-form{display:flex;flex-direction:column;gap:1rem}.login-field{display:flex;flex-direction:column;gap:.3rem}.login-field label{font-size:.82rem;font-weight:600;color:var(--text-secondary)}.login-field input{padding:.7rem .9rem;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:.95rem;font-family:var(--font);transition:border-color .2s}.login-field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0ea5e91a}.login-field input:disabled{opacity:.6}.login-btn{padding:.8rem;background:linear-gradient(135deg,var(--primary-dark),var(--primary-light));color:#fff;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem;transition:all .2s}.login-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #0ea5e966}.login-btn:disabled{opacity:.65;cursor:not-allowed}.login-link{background:none;border:none;color:var(--primary);font-size:.85rem;cursor:pointer;text-align:center;padding:.25rem;text-decoration:underline}.login-error{padding:1rem;background:#fef2f2;border-radius:var(--radius-sm);color:var(--red);font-size:.85rem}.login-fine-print{font-size:.75rem;color:var(--text-muted);text-align:center}.login-fine-print a{color:var(--primary)}.login-free-notice{margin-top:1.25rem;text-align:center;font-size:.78rem;color:var(--text-muted);background:var(--bg);padding:.5rem;border-radius:var(--radius-sm)}.dev-login-btn{width:100%;margin-top:.75rem;padding:.5rem;background:#fef9c3;border:1px dashed #ca8a04;border-radius:var(--radius-sm);font-size:.78rem;color:#854d0e;cursor:pointer}.lgpd-overlay{position:fixed;bottom:0;left:0;right:0;z-index:9999;padding:1rem;pointer-events:none}.lgpd-banner{max-width:820px;margin:0 auto;background:#fff;border-radius:14px;box-shadow:0 -4px 30px #00000026,0 0 0 1px var(--border);padding:1.25rem 1.5rem;pointer-events:all;animation:slideUp .4s ease}.lgpd-banner-body{display:flex;gap:1rem;margin-bottom:1rem}.lgpd-icon{font-size:1.5rem;flex-shrink:0}.lgpd-text strong{display:block;margin-bottom:.35rem;font-size:.95rem}.lgpd-text p{font-size:.82rem;color:var(--text-muted);line-height:1.55}.lgpd-details{margin-top:.75rem;background:var(--bg);border-radius:var(--radius-sm);padding:.75rem}.lgpd-detail-row{display:flex;align-items:flex-start;gap:.65rem;font-size:.78rem;color:var(--text-muted);margin-bottom:.4rem}.lgpd-detail-type{font-size:.7rem;font-weight:600;padding:.1rem .4rem;border-radius:4px;white-space:nowrap;flex-shrink:0}.lgpd-detail-type.required{background:#dcfce7;color:#15803d}.lgpd-detail-type.analytics{background:#dbeafe;color:#1e40af}.lgpd-detail-note{font-size:.75rem;color:var(--text-muted);margin-top:.5rem}.lgpd-detail-note a{color:var(--primary)}.lgpd-details-toggle{background:none;border:none;color:var(--primary);font-size:.78rem;cursor:pointer;margin-top:.4rem;padding:0}.lgpd-actions{display:flex;gap:.75rem;justify-content:flex-end}.lgpd-btn{padding:.6rem 1.25rem;border-radius:var(--radius-sm);font-size:.88rem;font-weight:600;cursor:pointer;transition:all .15s;border:none}.lgpd-reject{background:var(--bg);color:var(--text-muted);border:1px solid var(--border)}.lgpd-reject:hover{background:#e2e8f0}.lgpd-accept{background:var(--primary);color:#fff}.lgpd-accept:hover{background:var(--primary-dark)}.spinner-sm{width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}.spinner-lg{width:36px;height:36px;border:3px solid var(--border-blue);border-top-color:var(--primary);border-radius:50%;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@media (max-width: 640px){.header-controls{gap:.5rem}.header-tagline{display:none}.prof-btn{padding:.3rem .5rem;font-size:.75rem}.filter-row,.sci-form-row{flex-direction:column}.assistente-modes{grid-template-columns:1fr 1fr}.fontes-grid,.sci-papers-grid{grid-template-columns:1fr}.lgpd-banner{border-radius:14px 14px 0 0}.lgpd-actions{flex-direction:column}.lgpd-btn{width:100%;text-align:center}}