@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{
  color-scheme:light;
  --navy:#0a0f16;
  --navy2:#121b26;
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f4f7fb;
  --teal:#0d80bf;
  --aqua:#38bdf8;
  --pale:#edf6fc;
  --amber:#d97706;
  --red:#dc2626;
  --white:#ffffff;
  font-family:'DM Sans',Arial,sans-serif;
  font-size:16px;
}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:var(--teal)}.app-shell{min-height:100vh;display:grid;grid-template-columns:252px minmax(0,1fr)}.sidebar{background:var(--navy);color:#d9e2ec;display:flex;flex-direction:column;padding:28px 14px 19px;min-height:100vh}.brand{display:flex;align-items:center;gap:12px;padding:0 12px 37px;font:800 18px 'Manrope',sans-serif;letter-spacing:-.8px;color:#f8fafc;white-space:nowrap}.brand-light{font-weight:400;color:var(--aqua);margin-left:4px}.brand-mark{width:33px;height:33px;display:grid;place-items:center;border-radius:11px;background:#162436;color:var(--aqua);font-size:18px;line-height:1}.subject-label,.nav-group{font-size:11px;font-weight:800;letter-spacing:1.55px;color:#52697e;margin:0 15px 12px}.subject-chip{display:flex;align-items:center;gap:10px;border:1px solid #1e3147;background:#121d2a;border-radius:11px;padding:12px 13px;margin:0 9px 28px;font-size:14px;font-weight:700}.subject-dot{width:8px;height:8px;border-radius:50%;background:var(--aqua);box-shadow:0 0 0 4px #0d80bf44}.chip-caret{margin-left:auto;color:#7089a1}.side-nav{display:flex;flex-direction:column;gap:3px}.nav-group{margin-top:19px;margin-bottom:9px}.nav-group:first-child{margin-top:0}.nav-item{background:none;border:0;color:#94a3b8;padding:11px 14px;border-radius:9px;text-align:left;display:flex;align-items:center;gap:13px;font-size:14px;font-weight:600;min-height:44px}.nav-item:hover,.nav-item:focus-visible{background:#162232;color:#fff}.nav-item.active{background:#17283c;color:#fff;border-left:3px solid var(--aqua)}.nav-item.active .nav-icon{color:var(--aqua)}.nav-icon{font-size:19px;line-height:1;width:20px;text-align:center;color:#64748b}.nav-count{margin-left:auto;font-size:12px;background:#1e3249;color:#93c5fd;padding:2px 7px;border-radius:6px}.sidebar-footer{margin:auto 10px 0;border-top:1px solid #1a2838;padding:20px 4px 0;display:flex;align-items:center;gap:12px;color:#d9e2ec;font-size:13px;font-weight:700}.sidebar-footer small{display:block;font-weight:400;color:#64748b;margin-top:4px}.footer-orbit{font-size:28px;color:var(--aqua)}.main-column{min-width:0}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);padding:0 clamp(22px,4vw,60px)}.crumb{font-weight:700;font-size:14px;color:#334155}.crumb span:first-child{color:#94a3b8;padding:0 8px}.top-actions{display:flex;align-items:center;gap:22px;color:#475569;font-weight:700;font-size:13px}.avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#e0f2fe;color:#0369a1;font-size:12px;font-weight:800;border:1px solid #bae6fd}.menu-toggle{display:none;border:0;background:transparent;color:var(--ink);font-size:23px}main{max-width:1450px;margin:0 auto;padding:37px clamp(22px,4vw,60px) 70px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.8px;color:var(--teal);text-transform:uppercase;margin:0 0 10px}.page-heading{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:25px}.page-heading h1{font:800 clamp(29px,3vw,39px)/1.16 'Manrope',sans-serif;letter-spacing:-1.4px;margin:0 0 7px;color:#0a0f16}.page-heading p{margin:0;color:#64748b;font-size:15px;line-height:1.5}.page-heading .btn{flex-shrink:0}.btn{border:0;background:var(--teal);color:#fff;border-radius:9px;padding:11px 18px;font-size:14px;font-weight:800;min-height:43px;display:inline-flex;align-items:center;justify-content:center;gap:9px;transition:background .15s}.btn:hover{background:#0a689c}.btn:focus-visible,.nav-item:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.choice:focus-visible{outline:3px solid #7dd3fc;outline-offset:2px}.btn.light{background:#e0f2fe;color:#0284c7}.btn.light:hover{background:#bae6fd}.btn.ghost{background:#fff;color:#1e293b;border:1px solid #cbd5e1}.btn:disabled{opacity:.45;cursor:not-allowed}.demo-note{display:flex;gap:11px;align-items:flex-start;background:#f0f9ff;color:#0369a1;border:1px solid #bae6fd;border-radius:10px;padding:12px 16px;font-size:13px;line-height:1.5;margin-bottom:24px}.demo-note strong{color:#075985}.overview-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(290px,.8fr);gap:20px}.panel{background:#fff;border:1px solid #e2e8f0;border-radius:14px;box-shadow:0 5px 22px rgba(10,15,22,.03)}.feature{padding:29px 32px;position:relative;overflow:hidden;background:linear-gradient(128deg,#0a0f16 0%,#0c2136 60%,#0d80bf 100%);color:#fff;min-height:226px}.feature:after{content:'★';position:absolute;font:300 240px/1 'Manrope',sans-serif;right:-15px;top:-60px;color:#ffffff08;pointer-events:none}.feature .eyebrow{color:var(--aqua)}.feature h2{font:800 26px/1.22 'Manrope',sans-serif;letter-spacing:-.8px;margin:0 0 11px;max-width:450px}.feature p{color:#cbd5e1;line-height:1.5;max-width:420px;margin:0 0 19px;font-size:14px}.feature .btn{background:var(--aqua);color:#0a0f16;position:relative}.feature .btn:hover{background:#bae6fd}.goal-card{padding:26px}.card-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.label{font-size:12px;font-weight:800;letter-spacing:1.2px;color:#64748b;text-transform:uppercase}.goal-card h2{margin:19px 0 3px;font:800 37px 'Manrope',sans-serif;letter-spacing:-2px;color:#0a0f16}.goal-card h2 span{font-size:17px;color:#94a3b8;font-weight:700;letter-spacing:0}.goal-card p{color:#64748b;font-size:13px;margin:0 0 20px}.progress-track{height:9px;background:#e2e8f0;border-radius:20px;overflow:hidden}.progress-track i{height:100%;display:block;background:var(--teal);border-radius:20px;transition:width .2s}.goal-footer{display:flex;justify-content:space-between;font-size:12px;color:#64748b;margin-top:10px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}.stat{padding:19px 20px;min-height:112px}.stat strong{display:block;font:800 27px/1.2 'Manrope',sans-serif;letter-spacing:-1px;margin-top:12px;color:#0a0f16}.stat small{font-size:12px;color:#64748b}.split-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.85fr);gap:20px}.section-panel{padding:24px 25px}.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px}.section-head h2{font:800 17px 'Manrope',sans-serif;letter-spacing:-.4px;margin:0;color:#0a0f16}.text-link{border:0;background:none;color:var(--teal);font-size:13px;font-weight:800;padding:4px}.text-link:hover{text-decoration:underline}.topic-row{display:grid;grid-template-columns:130px 1fr 52px;align-items:center;gap:15px;margin:17px 0;font-size:14px}.topic-row b{font-weight:700;color:#1e293b}.topic-row .progress-track{height:7px}.topic-row em{font-style:normal;text-align:right;color:#0369a1;font-weight:800}.empty-message{color:#64748b;line-height:1.55;font-size:14px;margin:9px 0}.review-list{display:flex;flex-direction:column;gap:13px}.review-item{border-bottom:1px solid var(--line);padding-bottom:12px}.review-item:last-child{border:0;padding-bottom:0}.review-item strong{display:block;font-size:13px;line-height:1.45;color:#1e293b}.review-item small{color:#64748b;margin-top:5px;display:block}.badge{display:inline-block;border-radius:6px;padding:4px 8px;background:#e0f2fe;color:#0369a1;font-weight:800;font-size:11px}.badge.warm{background:#fef3c7;color:#92400e}.badge.red{background:#fee2e2;color:#991b1b}.toolbar{display:grid;grid-template-columns:minmax(240px,1.4fr) repeat(2,minmax(150px,.7fr));gap:12px;margin-bottom:18px}.field{width:100%;border:1px solid #cbd5e1;background:#fff;border-radius:9px;padding:11px 13px;min-height:44px;color:var(--ink);font-size:14px}.field::placeholder{color:#94a3b8}.filters-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0 0 19px;color:#64748b;font-size:13px}.question-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(230px,.34fr);gap:18px}.question-card{padding:27px 29px;min-height:380px}.question-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:18px}.question-id{font-weight:800;font-size:12px;color:#94a3b8;margin-left:auto}.question-card h2{font:700 clamp(18px,2vw,23px)/1.45 'Manrope',sans-serif;letter-spacing:-.5px;margin:0 0 22px;color:#0a0f16}.choices{display:flex;flex-direction:column;gap:10px}.choice{width:100%;text-align:left;border:1px solid #cbd5e1;background:#fff;border-radius:9px;padding:13px 14px;display:flex;gap:13px;align-items:flex-start;color:#1e293b;font-size:14px;line-height:1.4;transition:border-color .15s,background .15s}.choice:hover:not(:disabled){border-color:#0d80bf;background:#f0f9ff}.choice.selected{border-color:#0d80bf;background:#e0f2fe}.choice.correct{border-color:#22c55e;background:#f0fdf4}.choice.wrong{border-color:#ef4444;background:#fef2f2}.choice:disabled{cursor:default}.choice-letter{flex:none;display:grid;place-items:center;width:23px;height:23px;border:1px solid #cbd5e1;border-radius:6px;font-weight:800;color:#64748b;font-size:12px}.question-actions{display:flex;gap:10px;align-items:center;margin-top:22px;flex-wrap:wrap}.feedback{border-radius:10px;border:1px solid #bae6fd;background:#f0f9ff;padding:16px 17px;margin-top:22px}.feedback.incorrect{background:#fffbeb;border-color:#fde68a}.feedback h3{margin:0 0 7px;font:800 15px 'Manrope',sans-serif;color:#0a0f16}.feedback p{margin:0 0 9px;font-size:14px;line-height:1.6}.feedback a{font-size:13px;font-weight:800}.feedback .reading{border-top:1px solid #e0f2fe;padding-top:12px;margin:12px 0 0}.context-card{padding:22px;align-self:start}.context-card h3{font:800 15px 'Manrope',sans-serif;margin:0 0 12px;color:#0a0f16}.context-card p{font-size:13px;color:#64748b;line-height:1.55}.mini-stat{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:13px 0;font-size:13px}.mini-stat b{font-size:16px;color:#0a0f16}.empty-state{padding:40px;text-align:center}.empty-state h2{font:800 20px 'Manrope',sans-serif;margin:0 0 10px;color:#0a0f16}.empty-state p{max-width:510px;margin:0 auto 20px;color:#64748b;line-height:1.6}.answer-box{width:100%;min-height:180px;resize:vertical;border:1px solid #cbd5e1;border-radius:9px;padding:15px;color:var(--ink);line-height:1.55;font-size:15px}.model-box{padding:17px;border-radius:9px;background:#f8fafc;border:1px solid #e2e8f0;line-height:1.6;font-size:14px}.self-check{display:flex;flex-direction:column;gap:10px;margin:15px 0}.self-check label{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.4}.self-check input{accent-color:var(--teal);width:17px;height:17px;flex:none}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;min-width:600px;font-size:14px}.data-table th{text-align:left;font-size:11px;letter-spacing:1px;color:#64748b;text-transform:uppercase;padding:13px;border-bottom:1px solid var(--line)}.data-table td{padding:15px 13px;border-bottom:1px solid var(--line);vertical-align:top}.data-table tr:last-child td{border:0}.data-table small{display:block;color:#64748b;margin-top:4px}.trend{display:flex;gap:12px;align-items:flex-end;height:165px;padding-top:15px}.trend-col{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:8px;color:#64748b;font-size:12px}.trend-bar{background:var(--teal);border-radius:6px 6px 2px 2px;min-height:3px;width:min(39px,75%)}.trend-col strong{color:#0369a1;font-size:12px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.settings-grid .panel{padding:25px}.settings-grid h2{font:800 18px 'Manrope',sans-serif;margin:0 0 8px;color:#0a0f16}.settings-grid p{font-size:14px;line-height:1.55;color:#64748b}.form-row{display:flex;flex-direction:column;gap:7px;margin:17px 0}.form-row label{font-weight:800;font-size:13px;color:#334155}.small-print{font-size:12px!important;color:#94a3b8!important}#toast{position:fixed;bottom:20px;right:20px;background:#0a0f16;color:#fff;border-left:4px solid var(--aqua);padding:12px 17px;border-radius:9px;box-shadow:0 12px 30px rgba(10,15,22,.2);font-size:13px;opacity:0;transform:translateY(8px);pointer-events:none;transition:.2s;z-index:50}#toast.show{opacity:1;transform:translateY(0)}

/* Estilos da Biblioteca de Artigos */
.articles-list{display:flex;flex-direction:column;gap:18px}.article-card{padding:24px 28px;transition:border-color .15s}.article-card:hover{border-color:#bae6fd}.article-header{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:12px}.article-header h2{font:800 20px/1.35 'Manrope',sans-serif;letter-spacing:-.4px;margin:0;color:#0a0f16}.article-source{font-size:13px;color:#64748b;font-weight:600;margin-bottom:14px}.article-body{font-size:14.5px;line-height:1.65;color:#334155;margin-bottom:16px}.article-keywords{display:flex;flex-wrap:wrap;gap:8px}.keyword-tag{font-size:11px;font-weight:700;color:#0369a1;background:#e0f2fe;padding:3px 9px;border-radius:6px}

/* Tutor de IA: Botão Flutuante e Janela */
.ai-fab{position:fixed;bottom:24px;right:24px;background:linear-gradient(135deg,#0d80bf 0%,#0a0f16 100%);color:#fff;border-radius:30px;padding:12px 20px;display:flex;align-items:center;gap:10px;cursor:pointer;box-shadow:0 8px 25px rgba(10,15,22,.3);z-index:90;transition:transform .2s,box-shadow .2s;border:1px solid #38bdf844}.ai-fab:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(13,128,191,.4)}.ai-fab-icon{font-size:18px}.ai-fab-text{font-weight:800;font-size:14px;letter-spacing:-.3px}
.ai-widget{position:fixed;bottom:85px;right:24px;width:370px;max-width:calc(100vw - 32px);height:500px;max-height:calc(100vh - 120px);background:#fff;border:1px solid #cbd5e1;border-radius:16px;box-shadow:0 15px 40px rgba(10,15,22,.22);display:none;flex-direction:column;overflow:hidden;z-index:95}.ai-widget.open{display:flex}
.ai-widget-header{background:#0a0f16;color:#fff;padding:16px 18px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #1e2d3d}.ai-widget-info{display:flex;align-items:center;gap:10px}.ai-widget-info strong{display:block;font-size:14px;font-weight:800}.ai-widget-info small{display:block;font-size:11px;color:#94a3b8}.ai-dot{width:8px;height:8px;border-radius:50%;background:#38bdf8;box-shadow:0 0 0 3px #0d80bf66}.ai-widget-close{background:none;border:0;color:#94a3b8;font-size:16px;padding:4px}.ai-widget-close:hover{color:#fff}
.ai-widget-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;background:#f8fafc}.ai-bubble{max-width:85%;padding:12px 14px;border-radius:12px;font-size:13.5px;line-height:1.5}.ai-bot{background:#fff;color:#1e293b;border:1px solid #e2e8f0;align-self:flex-start;border-bottom-left-radius:3px}.ai-user{background:#0d80bf;color:#fff;align-self:flex-end;border-bottom-right-radius:3px}
.ai-widget-form{display:flex;border-top:1px solid #e2e8f0;background:#fff;padding:10px 12px;gap:8px}.ai-widget-form input{flex:1;border:1px solid #cbd5e1;border-radius:8px;padding:9px 12px;font-size:13.5px}.ai-widget-form input:focus{outline:2px solid #38bdf8}.ai-widget-send{background:#0d80bf;border:0;color:#fff;border-radius:8px;padding:0 14px;font-weight:800;font-size:14px}

@media(max-width:1100px){.overview-grid,.split-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.question-layout{grid-template-columns:1fr}.context-card{display:none}}
@media(max-width:760px){.app-shell{display:block}.sidebar{position:fixed;left:-270px;top:0;bottom:0;width:252px;z-index:20;transition:left .2s;box-shadow:8px 0 30px rgba(0,0,0,.4)}.sidebar.open{left:0}.menu-toggle{display:block}.topbar{padding:0 18px;height:62px}.crumb{margin-right:auto;margin-left:13px}.top-actions{gap:9px}.top-actions #active-time{font-size:12px}.avatar{display:none}main{padding:28px 18px 55px}.page-heading{align-items:flex-start;flex-direction:column}.overview-grid,.split-grid,.settings-grid{grid-template-columns:1fr}.stats-grid{gap:10px}.stat{padding:15px}.feature{padding:25px}.toolbar{grid-template-columns:1fr 1fr}.toolbar .search-field{grid-column:1/-1}.question-card{padding:20px}.question-id{width:100%;margin:4px 0 0}.topic-row{grid-template-columns:110px 1fr 47px;gap:8px}}