/* Saturn Prep: brand tokens from brand/saturn-prep-brand.html, interaction style after Duolingo
   (chunky "key" buttons with a solid bottom edge, big friendly type, the mascot reacting). */
:root{
  --ink:#1C2140; --ink-2:#4A5070; --ink-3:#8A8FA8;
  --saturno:#FFC34D; --saturno-claro:#FFDA8A; --saturno-escuro:#E0A11F; --pessego:#FFF4DC;
  --anel:#7563F2; --anel-escuro:#5B49D6; --anel-claro:#B3A9FF; --anel-fundo:#EFEDFF;
  --ceu:#E9F3FF; --ceu-2:#D4E7FF;
  --coral:#FF7F6E; --coral-escuro:#E4604F; --coral-fundo:#FFECE9;
  --verde:#2FB57A; --verde-escuro:#23935F; --verde-fundo:#E5F7EE;
  --papel:#FFFFFF; --neve:#F6F6FB; --linha:#E4E4F0;
  --display:"Fredoka", "Arial Rounded MT Bold", system-ui, sans-serif;
  --texto:"Lexend", "Segoe UI", system-ui, sans-serif;
  --r:16px; --r-lg:22px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{background:var(--ceu);color:var(--ink);font:15px/1.55 var(--texto)}
a{color:var(--anel)}
button{font:inherit;cursor:pointer}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.12;text-wrap:balance}
h1{font-size:30px;margin:0 0 4px}
h2{font-size:19px;margin:0 0 12px}
.sub{color:var(--ink-2);margin:0 0 20px}
.muted{color:var(--ink-3)}
.small{font-size:13px}
.num-f{font-family:var(--display);font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--anel-claro);outline-offset:2px}

.shell{display:flex;min-height:100vh}

/* ---- sidebar (light, like Duolingo's) ---- */
.side{width:236px;flex:none;background:var(--papel);border-right:2px solid var(--linha);padding:20px 14px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;gap:8px;align-items:center;margin:0 6px 24px;text-decoration:none;color:var(--ink)}
.brand .mark{width:46px;flex:none}
.brand b{font-family:var(--display);font-weight:700;font-size:22px;letter-spacing:-.01em;line-height:1}
.brand b span{color:var(--anel);font-weight:600}
nav a{display:flex;gap:14px;align-items:center;color:var(--ink-2);text-decoration:none;padding:10px 12px;border-radius:14px;margin-bottom:4px;border:2px solid transparent;font-weight:600;font-size:13.5px;letter-spacing:.06em;text-transform:uppercase}
nav a svg{width:26px;height:26px;flex:none}
nav a:hover{background:var(--neve)}
nav a.on{background:var(--anel-fundo);border-color:var(--anel-claro);color:var(--anel)}
.side-foot{margin-top:auto;font-size:12px;color:var(--ink-3);padding:0 8px;display:grid;gap:4px}
.side-foot .dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;background:var(--verde)}
.side-foot .dot.off{background:var(--saturno-escuro)}

main{flex:1;min-width:0;padding:24px 32px 60px}
.page{max-width:1060px;margin:0 auto}
@media (max-width:980px){
  .side{width:74px;padding:16px 8px}
  .brand b,.side-foot{display:none}
  .brand{margin:0 auto 18px}
  nav a{justify-content:center;font-size:0;padding:10px}
  main{padding:18px 16px 60px}
}

/* ---- top bar: streak and daily ring ---- */
.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.stats{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.stat{display:flex;align-items:center;gap:8px;background:var(--papel);border:2px solid var(--linha);border-radius:14px;padding:6px 12px;font-family:var(--display);font-weight:600;font-size:17px}
.stat svg{width:26px;height:26px}
.stat.hot{color:#D98A00;border-color:var(--saturno-claro);background:var(--pessego)}
.stat small{font-family:var(--texto);font-weight:500;font-size:12px;color:var(--ink-3)}

/* ---- cards and grid ---- */
.card{background:var(--papel);border:2px solid var(--linha);border-radius:var(--r-lg);padding:18px 20px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:980px){.g2,.g3,.g4{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.mt{margin-top:14px}
.kpi .label{font-size:11.5px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.1em;font-weight:600}
.kpi .value{font-family:var(--display);font-size:32px;font-weight:600;margin-top:2px;line-height:1.1;font-variant-numeric:tabular-nums}
.kpi .hint{font-size:12.5px;color:var(--ink-3);margin-top:2px}

/* ---- hero with the mascot ---- */
.hero{display:grid;grid-template-columns:150px 1fr auto;gap:22px;align-items:center;background:var(--papel);border:2px solid var(--linha);border-radius:26px;padding:18px 24px}
.hero .satu{width:150px}
.hero h2{font-size:25px;margin:0 0 6px}
.hero p{margin:0;color:var(--ink-2);max-width:520px}
.hero.first{grid-template-columns:200px 1fr;background:linear-gradient(180deg,#FFFFFF,var(--pessego))}
.hero.first .satu{width:200px}
@media (max-width:760px){.hero,.hero.first{grid-template-columns:1fr;text-align:center;justify-items:center}}
.speech{position:relative;background:var(--papel);border:2px solid var(--linha);border-radius:18px;padding:12px 16px;font-size:15px}

/* ---- Duolingo-style key buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:16px;padding:13px 22px;font-family:var(--texto);font-weight:700;font-size:14px;letter-spacing:.06em;text-transform:uppercase;text-decoration:none;background:var(--saturno);color:var(--ink);box-shadow:0 4px 0 var(--saturno-escuro);transition:transform .06s, box-shadow .06s;white-space:nowrap}
.btn:hover{filter:brightness(1.04)}
.btn:active{transform:translateY(4px);box-shadow:0 0 0 var(--saturno-escuro)}
.btn.anel{background:var(--anel);color:#fff;box-shadow:0 4px 0 var(--anel-escuro)}
.btn.anel:active{box-shadow:0 0 0 var(--anel-escuro)}
.btn.ghost{background:var(--papel);color:var(--anel);border:2px solid var(--linha);box-shadow:0 4px 0 var(--linha)}
.btn.ghost:active{box-shadow:0 0 0 var(--linha)}
.btn.big{padding:16px 28px;font-size:15px}
.btn:disabled{opacity:.5;cursor:default;transform:none}
.pill{display:inline-block;border-radius:99px;padding:3px 10px;font-size:12px;font-weight:600;background:var(--anel-fundo);color:var(--anel)}
.pill.ok{background:var(--verde-fundo);color:var(--verde-escuro)}.pill.bad{background:var(--coral-fundo);color:#C4483A}.pill.warn{background:var(--pessego);color:#9A6A00}
.notice{border-radius:16px;padding:12px 16px;background:var(--pessego);color:#6B4A00;margin-bottom:14px;border:2px solid var(--saturno-claro)}
.notice.info{background:var(--anel-fundo);color:#3B2F9E;border-color:var(--anel-claro)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px}
.steps div{background:var(--papel);border:2px solid var(--linha);border-radius:16px;padding:12px;font-size:13.5px;text-align:left}
.steps b{display:block;font-family:var(--display);font-size:22px;color:var(--anel)}
@media (max-width:980px){.steps{grid-template-columns:1fr 1fr}}

/* ---- bars and tables ---- */
.bar-row{display:grid;grid-template-columns:minmax(120px,1.4fr) 2fr 76px;gap:12px;align-items:center;padding:8px 0;border-bottom:2px solid var(--neve);font-size:14px}
.bar-row:last-child{border-bottom:none}
.bar{height:14px;background:var(--neve);border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:var(--anel);box-shadow:inset 0 -3px 0 rgba(0,0,0,.12)}
.bar i.ok{background:var(--verde)}.bar i.bad{background:var(--coral)}.bar i.warn{background:var(--saturno)}
.num{text-align:right;font-variant-numeric:tabular-nums}
.bar.tick{position:relative}
.bar.tick::after{content:"";position:absolute;left:var(--tick);top:0;bottom:0;width:2px;background:var(--ink)}
/* name and numbers on one line, the bar under them: fits even in the narrow two-column grid */
.pace-card .bar-row{grid-template-columns:minmax(0,1fr) auto;row-gap:6px}
.pace-card .bar-row .bar{grid-column:1/-1;grid-row:2}
.plan-box{background:var(--anel-fundo);border-radius:14px;padding:10px 14px;font-size:13.5px;margin-top:12px;line-height:1.5}
.mt-s{margin-top:6px}
.num b{font-family:var(--display);font-weight:600;font-size:16px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;font-size:11.5px;color:var(--ink-3);font-weight:600;text-transform:uppercase;letter-spacing:.08em;padding:8px 10px;border-bottom:2px solid var(--linha)}
td{padding:11px 10px;border-bottom:2px solid var(--neve)}
tr.click{cursor:pointer}tr.click:hover td{background:var(--anel-fundo)}
.focus-tag{font-size:10.5px;font-weight:700;color:#fff;background:var(--coral);border-radius:6px;padding:1px 6px;margin-left:6px;letter-spacing:.06em}
.empty{color:var(--ink-3);text-align:center;padding:22px 10px;display:grid;justify-items:center;gap:8px}
.empty .satu{width:90px}
.dots{display:flex;gap:4px;margin-top:8px}.dots i{width:13px;height:13px;border-radius:4px;background:var(--neve);border:1.5px solid var(--linha)}.dots i.on{background:var(--saturno);border-color:var(--saturno-escuro)}

/* ---- question detail ---- */
.q{border:2px solid var(--linha);border-radius:18px;padding:16px;margin-top:12px;background:#fff}
.q .meta{font-size:12px;color:var(--ink-3);margin-bottom:8px}
.q .passage{font-family:Georgia,serif;font-size:15px;white-space:pre-wrap}
.q .opt{border:2px solid var(--linha);border-radius:12px;padding:8px 12px;margin:6px 0;font-size:14px}
.q .opt.right{border-color:var(--verde);background:var(--verde-fundo)}
.q .opt.wrong{border-color:var(--coral);background:var(--coral-fundo)}
.q .opt.crossed{text-decoration:line-through;color:var(--ink-3)}
.q details{margin-top:10px;font-size:14px}
.coachnote{display:grid;grid-template-columns:44px 1fr;gap:10px;align-items:start;background:var(--anel-fundo);border-radius:14px;padding:10px 12px;margin-top:10px;font-size:14px}

/* ---- chat ---- */
.chat{max-width:760px;margin:0 auto;display:flex;flex-direction:column;height:calc(100vh - 48px)}
.chat-head{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding-bottom:12px}
.chat-head h2{margin:0;font-size:18px}
.lesson-bar{display:flex;gap:6px}
.lesson-bar i{flex:1;height:16px;border-radius:99px;background:var(--papel);border:2px solid var(--linha)}
.lesson-bar i.on{background:var(--saturno);border-color:var(--saturno-escuro);box-shadow:inset 0 -4px 0 rgba(0,0,0,.08)}
.lesson-bar-wrap{display:grid;gap:4px}
.lesson-bar-wrap small{font-size:11.5px;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.msgs{flex:1;overflow-y:auto;padding:14px 4px 8px;scroll-behavior:smooth}
.msg{display:flex;gap:10px;margin-bottom:14px;animation:in .18s ease-out;align-items:flex-end}
@keyframes in{from{opacity:.4;transform:translateY(4px)}to{opacity:1}}
.msg .av{flex:none;width:44px}
.msg .bubble{background:#fff;border:2px solid var(--linha);border-radius:18px 18px 18px 6px;padding:11px 15px;max-width:88%}
.msg.user{justify-content:flex-end}
.msg.user .bubble{background:var(--anel);color:#fff;border-color:var(--anel);border-radius:18px 18px 6px 18px;box-shadow:0 3px 0 var(--anel-escuro)}
.bubble p{margin:0 0 8px}.bubble p:last-child{margin:0}
.bubble table{margin:8px 0;font-size:13px}.bubble td,.bubble th{padding:5px 8px}
.bubble ul,.bubble ol{margin:6px 0;padding-left:20px}
.bubble code{background:var(--neve);border-radius:6px;padding:1px 5px;font-size:13px}
.bubble b{font-weight:600}
.typing span{display:inline-block;width:7px;height:7px;margin:0 2px;border-radius:50%;background:var(--anel-claro);animation:blink 1s infinite}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{50%{opacity:.25}}

/* verdict strip under an answer */
.fb{display:grid;grid-template-columns:64px 1fr;gap:12px;align-items:center;border-radius:18px;padding:12px 16px;margin:0 0 14px 54px;border:2px solid}
.fb.ok{background:var(--verde-fundo);border-color:#BFE8D2}
.fb.no{background:var(--coral-fundo);border-color:#FFD0C8}
.fb h4{margin:0;font-family:var(--display);font-weight:600;font-size:20px}
.fb.ok h4{color:var(--verde-escuro)} .fb.no h4{color:#C4483A}
.fb .fb-body p{margin:4px 0 0}
@media (max-width:620px){.fb{margin-left:0}}

/* module result card */
.rcard{margin:0 0 14px 54px;background:var(--papel);border:2px solid var(--linha);border-radius:22px;padding:18px;display:grid;gap:14px}
.rcard-top{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:center}
.rcard .score{font-family:var(--display);font-weight:600;font-size:46px;line-height:1;font-variant-numeric:tabular-nums}
.rcard .score small{font-size:20px;color:var(--ink-3)}
.rcard .delta{display:inline-block;margin-top:6px;font-weight:600;font-size:13px;border-radius:99px;padding:3px 10px}
.rcard .tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.rcard .tile{background:var(--neve);border-radius:14px;padding:10px;text-align:center}
.rcard .tile b{display:block;font-family:var(--display);font-weight:600;font-size:22px}
.rcard .tile span{font-size:11.5px;color:var(--ink-2)}
@media (max-width:620px){.rcard{margin-left:0}.rcard .tiles{grid-template-columns:1fr}}

.dock{padding-top:12px}
.widget{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px}
.widget .choice{background:#fff;border:2px solid var(--linha);color:var(--ink);border-radius:16px;padding:11px 18px;font-weight:600;box-shadow:0 4px 0 var(--linha);transition:transform .06s, box-shadow .06s}
.widget .choice:hover{border-color:var(--anel-claro);background:var(--anel-fundo);color:var(--anel)}
.widget .choice:active{transform:translateY(4px);box-shadow:0 0 0 var(--linha)}
.widget input[type=date],.widget input[type=number]{border:2px solid var(--linha);border-radius:14px;padding:10px 12px;font:inherit;background:#fff}
.widget .skip{background:none;border:none;color:var(--ink-3);text-decoration:underline;font-weight:500}
.composer{display:flex;gap:10px;align-items:flex-end}
.composer textarea{flex:1;resize:none;border:2px solid var(--linha);border-radius:16px;padding:12px 15px;font:inherit;min-height:50px;max-height:180px;background:#fff}
.composer textarea:focus,.widget input:focus{outline:none;border-color:var(--anel)}
.hint-line{font-size:12px;color:var(--ink-3);margin-top:8px}

/* ---- forms ---- */
.form label{display:block;font-size:12.5px;font-weight:600;margin:12px 0 5px;color:var(--ink-2)}
.form input,.form select{width:100%;border:2px solid var(--linha);border-radius:14px;padding:10px 12px;font:inherit;background:#fff}
.form input:focus,.form select:focus{outline:none;border-color:var(--anel)}
.row{display:flex;gap:12px}.row>*{flex:1}
.status-ok{color:var(--verde-escuro);font-weight:600}.status-bad{color:#C4483A;font-weight:600}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* reading: passage, stacked options, timer */
.bubble blockquote{margin:8px 0 2px;padding:12px 16px;border-left:4px solid var(--anel-claro);background:var(--papel);border-radius:0 12px 12px 0;font-family:Georgia,"Times New Roman",serif;font-size:15.5px;line-height:1.6}
.bubble blockquote p{margin:0 0 8px}.bubble blockquote p:last-child{margin:0}
.widget.stack{flex-direction:column;align-items:stretch}
.widget.stack .choice{text-align:left;white-space:normal;line-height:1.4}
.widget .timer{align-self:center;font-family:var(--display);font-weight:600;font-variant-numeric:tabular-nums;color:var(--anel);background:var(--anel-fundo);border-radius:999px;padding:6px 12px}
.widget .timer.over{color:var(--coral);background:var(--coral-fundo)}

/* hosted: who is logged in */
.side-user{margin-top:10px;font-size:12px;color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-logout{margin-top:4px;background:none;border:0;padding:0;color:var(--anel);font:inherit;font-size:12.5px;font-weight:600;text-decoration:underline;cursor:pointer}

/* question bank */
.qb-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.qb-grid label{margin-top:0}
.qb-go{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:16px}
.qb-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.qb-top .btn{padding:8px 14px;font-size:12px}
.qb-clock{margin-left:auto;font-family:var(--display);font-weight:600;font-variant-numeric:tabular-nums;color:var(--ink-3)}
.qb-row{display:flex;gap:8px;align-items:stretch}
.qb-opt{flex:1;text-align:left;background:#fff;font:inherit;cursor:pointer;color:var(--ink)}
.qb-opt:hover:not(:disabled){border-color:var(--anel-claro)}
.qb-opt.sel{border-color:var(--anel);background:var(--anel-fundo)}
.qb-opt:disabled{cursor:default;color:var(--ink)}
.qb-x{width:40px;margin:6px 0;border:2px solid var(--linha);border-radius:12px;background:#fff;color:var(--ink-3);font-weight:700;cursor:pointer}
.qb-img{display:block;max-width:100%;margin:6px 0 12px;border-radius:10px}
.qb-fb{margin:14px 0 6px}
.qb-actions{display:flex;justify-content:flex-end}
@media (max-width:980px){.qb-grid{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.qb-grid{grid-template-columns:1fr}}