:root{
  --bg:#08111f;--panel:#0e1a2d;--panel2:#12213a;--text:#eef4ff;--muted:#91a4c3;
  --brand:#5ce1e6;--brand2:#7c8cff;--ok:#51d88a;--warn:#ffc857;--danger:#ff6b7a;
  --border:rgba(255,255,255,.09);--shadow:0 14px 45px rgba(0,0,0,.28);
  --radius:18px;--sidebar:270px;--top:68px;
}
[data-theme="light"]{
  --bg:#f4f7fb;--panel:#ffffff;--panel2:#eef3fa;--text:#10203a;--muted:#62718b;
  --brand:#0c9aa5;--brand2:#5865df;--ok:#218b55;--warn:#b77900;--danger:#d64258;
  --border:rgba(18,31,54,.10);--shadow:0 12px 32px rgba(45,67,100,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
a{color:inherit}
.hidden{display:none!important}
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar);padding:20px 16px;background:linear-gradient(180deg,var(--panel),var(--bg));
  border-right:1px solid var(--border);z-index:30;display:flex;flex-direction:column
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 24px}
.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-weight:900;color:#07111c;
  background:linear-gradient(135deg,var(--brand),#c6fbff);box-shadow:0 8px 30px rgba(92,225,230,.25)}
.brand strong{display:block;font-size:15px}.brand span{display:block;font-size:11px;color:var(--muted);margin-top:3px}
#nav{display:grid;gap:4px}
#nav button{border:0;background:transparent;color:var(--muted);padding:11px 12px;border-radius:12px;text-align:left;display:flex;gap:11px;align-items:center}
#nav button:hover,#nav button.active{background:var(--panel2);color:var(--text)}
#nav button.active{box-shadow:inset 3px 0 0 var(--brand)}
.sidebar-footer{margin-top:auto;padding:12px 8px;color:var(--muted)}
.sidebar-footer small{font-size:11px}
.mini-progress span{font-size:12px}.mini-progress>div{height:6px;background:var(--panel2);border-radius:99px;margin:8px 0 12px;overflow:hidden}
.mini-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2));border-radius:99px}
.topbar{position:fixed;left:var(--sidebar);right:0;top:0;height:var(--top);z-index:20;background:rgba(8,17,31,.82);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 24px;gap:15px}
[data-theme="light"] .topbar{background:rgba(244,247,251,.88)}
.top-title{display:flex;flex-direction:column;min-width:0}.top-title strong{font-size:16px}.top-title span{font-size:11px;color:var(--muted);margin-top:3px}
.top-actions{margin-left:auto;display:flex;gap:8px}
.icon-btn{border:1px solid var(--border);background:var(--panel);color:var(--text);width:40px;height:40px;border-radius:12px}
#menuBtn{display:none}
.primary,.secondary,.ghost,.danger-btn{border:0;border-radius:12px;padding:11px 15px;font-weight:700}
.primary{background:linear-gradient(135deg,var(--brand),#9ff4f7);color:#06101b}
.secondary{background:var(--panel2);color:var(--text);border:1px solid var(--border)}
.ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}
.danger-btn{background:rgba(255,107,122,.15);color:var(--danger);border:1px solid rgba(255,107,122,.25)}
.small{padding:8px 11px;font-size:12px}
.content{margin-left:var(--sidebar);padding:calc(var(--top) + 24px) 28px 90px;max-width:1500px}
.grid{display:grid;gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.grid.five{grid-template-columns:repeat(5,minmax(0,1fr))}
.card{background:linear-gradient(180deg,var(--panel),rgba(14,26,45,.9));border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
[data-theme="light"] .card{background:var(--panel)}
.card h3,.card h2{margin:0 0 12px}.card p{color:var(--muted);line-height:1.55}
.hero{padding:24px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-90px;top:-120px;background:radial-gradient(circle,rgba(92,225,230,.18),transparent 70%)}
.eyebrow{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:var(--brand)}
.hero h1{font-size:clamp(26px,4vw,44px);line-height:1.05;margin:8px 0 10px;max-width:700px}
.hero p{max-width:760px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.stat{display:flex;flex-direction:column;gap:8px}.stat b{font-size:27px}.stat span{color:var(--muted);font-size:12px}
.progress-track{height:10px;border-radius:999px;background:var(--panel2);overflow:hidden}
.progress-track i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));border-radius:999px}
.kicker{color:var(--muted);font-size:12px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:26px 0 12px}
.section-head h2{margin:0;font-size:20px}.section-head p{margin:4px 0 0;color:var(--muted);font-size:13px}
.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:7px 10px;border-radius:999px;border:1px solid var(--border);background:var(--panel2);font-size:12px;color:var(--muted)}
.chip.active{color:#06101b;background:var(--brand);border-color:transparent;font-weight:800}
.task{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--border)}.task:last-child{border-bottom:0}
.task input{margin-top:4px;accent-color:var(--brand)}.task strong{display:block}.task small{display:block;color:var(--muted);line-height:1.45;margin-top:3px}
.week-card{position:relative}.week-card .week-num{width:38px;height:38px;border-radius:11px;background:var(--panel2);display:grid;place-items:center;font-weight:900}
.week-top{display:flex;gap:12px;align-items:center}.week-top h3{margin:0;font-size:16px}.week-top span{font-size:11px;color:var(--muted)}
.week-card details{margin-top:12px}.week-card summary{cursor:pointer;color:var(--brand);font-weight:800;font-size:13px}
.week-meta{display:grid;gap:9px;margin-top:14px}.week-meta div{background:var(--panel2);padding:11px 12px;border-radius:12px}
.week-meta b{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:4px}
.week-meta span{font-size:13px;line-height:1.45}
.calendar-wrap{overflow:auto}.calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(105px,1fr));gap:8px;min-width:760px}
.cal-head{font-size:11px;color:var(--muted);padding:4px 8px;text-align:center}
.cal-day{min-height:105px;background:var(--panel2);border:1px solid var(--border);border-radius:13px;padding:9px;position:relative}
.cal-day.empty{opacity:.3}.cal-day.today{outline:2px solid var(--brand)}.cal-day .num{font-weight:800;font-size:12px}
.cal-events{display:grid;gap:5px;margin-top:8px}.cal-event{font-size:10px;padding:5px 6px;border-radius:7px;background:rgba(92,225,230,.12);color:var(--brand)}
.cal-event.lesson{background:rgba(124,140,255,.17);color:#aeb7ff}.cal-event.review{background:rgba(255,200,87,.14);color:var(--warn)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.input,select,textarea{width:100%;background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:11px 12px;outline:none}
.input:focus,select:focus,textarea:focus{border-color:var(--brand)}
select{width:auto}
textarea{min-height:160px;resize:vertical;line-height:1.5}
.flash-wrap{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(250px,.6fr);gap:16px}
.flashcard{min-height:300px;display:grid;place-items:center;text-align:center;cursor:pointer;position:relative;overflow:hidden}
.flashcard .front{font-size:clamp(27px,5vw,48px);font-weight:850;max-width:800px}.flashcard .back{font-size:20px;color:var(--muted);margin-top:12px}
.flashcard .hint{position:absolute;bottom:15px;color:var(--muted);font-size:11px}
.flash-actions{display:flex;gap:10px;justify-content:center;margin-top:14px;flex-wrap:wrap}
.resource{display:flex;gap:14px;align-items:flex-start}.resource-icon{width:44px;height:44px;border-radius:12px;background:var(--panel2);display:grid;place-items:center;font-weight:900;color:var(--brand)}
.resource h3{font-size:15px;margin:0 0 5px}.resource p{font-size:12px;margin:0 0 10px}.resource a{text-decoration:none}
.tag{display:inline-block;font-size:10px;border:1px solid var(--border);border-radius:999px;padding:4px 7px;color:var(--muted);margin-right:5px}
.guide-list{display:grid;gap:9px;padding:0;margin:0;list-style:none}.guide-list li{padding:9px 11px;background:var(--panel2);border-radius:10px;font-size:13px}
.timer{font-variant-numeric:tabular-nums;font-size:clamp(48px,11vw,92px);font-weight:900;letter-spacing:-.05em;text-align:center;margin:18px 0}
.prompt-box{font-size:20px;text-align:center;line-height:1.45;padding:18px;background:var(--panel2);border-radius:14px;min-height:90px;display:grid;place-items:center}
.record-dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--danger);margin-right:6px}.recording .record-dot{animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.25}}
.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field label{display:block;font-size:11px;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 7px}
.field textarea{min-height:130px}
.quiz-q{padding:14px 0;border-bottom:1px solid var(--border)}.quiz-q:last-child{border:0}.quiz-q strong{display:block;margin-bottom:9px}
.quiz-opt{display:block;padding:9px 10px;background:var(--panel2);border-radius:10px;margin:6px 0;font-size:13px}.quiz-opt input{accent-color:var(--brand);margin-right:8px}
.score-ring{width:130px;height:130px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--brand) var(--p),var(--panel2) 0);position:relative}
.score-ring:after{content:"";position:absolute;inset:12px;background:var(--panel);border-radius:50%}.score-ring b{z-index:1;font-size:24px}
.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;min-width:680px}.table th,.table td{padding:11px 9px;border-bottom:1px solid var(--border);text-align:left;font-size:12px}.table th{color:var(--muted)}
.callout{border-left:3px solid var(--brand);padding:12px 14px;background:rgba(92,225,230,.08);border-radius:0 12px 12px 0;color:var(--muted);font-size:13px;line-height:1.5}
.bottom-nav{display:none}
.toast{position:fixed;right:22px;bottom:22px;background:var(--text);color:var(--bg);padding:11px 14px;border-radius:12px;z-index:100;font-weight:800;font-size:12px;box-shadow:var(--shadow)}
@media(max-width:1050px){
  .grid.four,.grid.five{grid-template-columns:repeat(2,1fr)}.grid.three{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:800px){
  :root{--top:60px}
  .sidebar{transform:translateX(-102%);transition:.25s;width:min(300px,88vw);box-shadow:var(--shadow)}
  .sidebar.open{transform:translateX(0)}
  .topbar{left:0;padding:0 14px}.content{margin-left:0;padding:calc(var(--top) + 16px) 14px 88px}
  #menuBtn{display:block}.bottom-nav{display:grid;position:fixed;left:0;right:0;bottom:0;height:68px;background:var(--panel);border-top:1px solid var(--border);z-index:25;grid-template-columns:repeat(5,1fr);padding-bottom:env(safe-area-inset-bottom)}
  .bottom-nav button{border:0;background:transparent;color:var(--muted);font-size:18px}.bottom-nav button.active{color:var(--brand)}.bottom-nav span{display:block;font-size:9px;margin-top:2px}
  .grid.two,.grid.three,.grid.four,.grid.five,.note-grid,.flash-wrap{grid-template-columns:1fr}
  .hero{padding:20px}.hero h1{font-size:30px}.top-title span{max-width:210px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .card{padding:15px}.section-head{align-items:flex-start;flex-direction:column}
}

/* V2 — onboarding / perfil multi-aluno */
body.onboarding-mode .sidebar,
body.onboarding-mode .topbar,
body.onboarding-mode .bottom-nav{display:none!important}
body.onboarding-mode .content{margin:0 auto;padding:28px 18px 60px;max-width:1040px}
.onboarding-wrap{display:grid;gap:18px}
.onboarding-hero{padding:30px}
.onboarding-form{display:grid;gap:16px}
.onboarding-form .card{box-shadow:none}
.section-head.compact{margin:0 0 16px;align-items:flex-start}
.wide-select{width:100%!important}
.priority-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.priority-option{display:flex;align-items:center;gap:9px;padding:11px 12px;border:1px solid var(--border);background:var(--panel2);border-radius:12px;cursor:pointer}
.priority-option input{accent-color:var(--brand)}
.priority-option:has(input:checked){border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand)}
.onboarding-actions{display:flex;gap:10px;justify-content:flex-end;position:sticky;bottom:12px;padding:12px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-radius:16px;z-index:5}
.profile-summary .profile-value{font-size:20px;overflow-wrap:anywhere}
.cal-event.lesson{background:rgba(124,140,255,.17);color:#aeb7ff}
@media(max-width:800px){
  body.onboarding-mode .content{padding:14px 12px 36px}
  .onboarding-hero{padding:20px}
  .priority-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .onboarding-actions{justify-content:stretch}.onboarding-actions button{flex:1}
}