/* CIÊNCIA INFINITA — tema claro, mobile-first, texto grande */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f6f9ff; --card:#ffffff; --ink:#1e293b; --muted:#64748b;
  --line:#e2e8f0; --accent:#2563eb; --accent-ink:#ffffff;
  --ok:#059669; --warn:#d97706; --err:#dc2626;
  --radius:18px; --shadow:0 4px 18px rgba(30,41,59,.08);
}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;font-size:19px;line-height:1.65}
#app{max-width:640px;margin:0 auto;min-height:100vh}
.screen{padding:18px 16px 48px}
.hidden{display:none!important}
h1{font-size:40px;letter-spacing:2px;line-height:1.15;text-align:center;color:var(--ink)}
h2{font-size:26px}
h3{font-size:22px}
.sec-title{margin:18px 4px 10px}
.muted{color:var(--muted)}
.pad{padding:6px 2px}
.erro{color:var(--err);min-height:1.4em;text-align:center;font-size:17px}

/* botões */
button{font-family:inherit;cursor:pointer;border:none;border-radius:14px;font-size:19px;padding:14px 20px}
.primary{background:var(--accent);color:var(--accent-ink);font-weight:700;box-shadow:var(--shadow)}
.primary.big{width:100%;margin-top:10px;font-size:21px}
.ghost{background:#eef2f7;color:var(--ink);font-weight:600}
button:disabled{opacity:.45;cursor:default}

/* login */
#s-login{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{background:var(--card);border-radius:24px;box-shadow:var(--shadow);padding:34px 26px;width:100%;max-width:420px;text-align:center}
.logo{width:120px;height:120px;object-fit:contain;margin-bottom:8px}
.login-card .sub{color:var(--muted);margin:10px 0 18px;font-size:20px}
.login-card input{width:100%;font-size:20px;padding:14px 16px;border:2px solid var(--line);border-radius:14px;margin-bottom:12px;font-family:inherit}
.login-card input:focus{outline:none;border-color:var(--accent)}

/* topo */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}

/* cards dos caminhos */
.cards{display:grid;gap:16px}
.pcard{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;text-align:left;padding:0;border-top:6px solid var(--pc,#2563eb)}
.pcard img{width:100%;height:190px;object-fit:cover;display:block}
.pcard .pbody{padding:16px 18px 20px}
.pcard h3{font-size:24px;margin-bottom:4px}
.pcard .frase{color:var(--muted);font-size:18px;margin-bottom:12px}
.bar{height:12px;background:#eef2f7;border-radius:99px;overflow:hidden;margin:8px 0 6px}
.bar>i{display:block;height:100%;background:var(--pc,#2563eb);border-radius:99px;transition:width .4s}
.pct{font-size:16px;color:var(--muted);font-weight:700}

/* hero do caminho */
.hero{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--card)}
.hero img{width:100%;height:210px;object-fit:cover;display:block}
.hero .hbody{padding:18px}
.hero h2{font-size:28px;margin-bottom:6px}
.hero p{color:var(--muted);font-size:18px}

/* módulos */
.mods{display:grid;gap:12px}
.mod{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;display:flex;gap:14px;align-items:center;text-align:left;width:100%}
.mod .n{flex:0 0 52px;height:52px;border-radius:16px;background:var(--pc,#2563eb);color:#fff;font-size:24px;font-weight:800;display:flex;align-items:center;justify-content:center}
.mod h4{font-size:20px}
.mod small{color:var(--muted);font-size:16px}
.mod.done{outline:3px solid var(--ok)}

/* lições */
.licao{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:12px;width:100%;text-align:left;display:flex;gap:12px;align-items:center}
.licao .st{font-size:26px}
.licao h4{font-size:20px}
.licao small{color:var(--muted);font-size:16px}
.quiz-card{background:linear-gradient(135deg,#fff7ed,#ffedd5);border:2px dashed var(--warn);border-radius:var(--radius);padding:20px;margin-top:14px;text-align:center}
.quiz-card h4{font-size:22px;margin-bottom:8px}

/* aula */
.lesson{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px}
.lesson h2{font-size:27px;margin-bottom:14px}
.lesson p{font-size:21px;margin-bottom:16px}
.sabia{background:#f0f9ff;border-left:6px solid var(--accent);border-radius:12px;padding:14px 16px;margin:18px 0;font-size:19px}
.sabia b{color:var(--accent)}
.escolha{background:#faf5ff;border:2px solid #c4b5fd;border-radius:14px;padding:16px;margin:18px 0}
.escolha h4{font-size:20px;margin-bottom:10px}
.escolha .ops{display:grid;gap:10px;margin-top:10px}
.escolha .ops button{background:#fff;border:2px solid #c4b5fd;text-align:left;font-size:18px}
.escolha .resultado{background:#fff;border-radius:10px;padding:12px 14px;margin-top:12px;font-size:19px;display:none}
.exp{background:#f0fdf4;border:2px solid #6ee7b7;border-radius:14px;padding:16px;margin:18px 0}
.exp h4{font-size:21px;margin-bottom:8px;color:#065f46}
.exp ul,.exp ol{margin:8px 0 8px 22px;font-size:19px}
.exp li{margin-bottom:8px}
.exp .porque{background:#fff;border-radius:10px;padding:12px 14px;margin-top:10px;font-size:18px}
.lesson-nav{display:flex;justify-content:space-between;gap:10px;margin-top:16px}

/* quiz */
.qcard{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px}
.qcard .qp{font-size:15px;color:var(--muted);font-weight:700;margin-bottom:8px}
.qcard h3{font-size:23px;margin-bottom:16px}
.qops{display:grid;gap:10px}
.qops button{background:#f1f5f9;text-align:left;font-size:19px;border:2px solid transparent}
.qops button.certa{background:#dcfce7;border-color:var(--ok)}
.qops button.errada{background:#fee2e2;border-color:var(--err)}
.qops button:disabled{opacity:1}
.qfb{margin-top:14px;font-size:19px;background:#f8fafc;border-radius:12px;padding:12px 14px;display:none}
.qscore{text-align:center;padding:20px}
.qscore .big{font-size:64px;margin-bottom:10px}

/* projeto */
.projeto{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 20px}
.projeto h2{font-size:26px;margin-bottom:12px}
.projeto p{font-size:20px;margin-bottom:12px}
.projeto ol{margin:10px 0 10px 24px;font-size:20px}
.projeto li{margin-bottom:12px;background:#f8fafc;border-radius:10px;padding:10px 12px;list-style-position:inside}
.projeto li.feito{text-decoration:line-through;opacity:.6}

/* diploma */
.diploma{background:linear-gradient(160deg,#fffbeb,#fef3c7);border:4px solid #f59e0b;border-radius:24px;box-shadow:var(--shadow);padding:36px 26px;text-align:center}
.diploma h2{font-size:30px;margin-bottom:6px}
.diploma .nome{font-size:34px;font-weight:800;color:#92400e;margin:14px 0}
.diploma p{font-size:20px;margin-bottom:10px}
.diploma .selo{font-size:72px;margin:10px 0}

.bigbtn{width:100%;margin-top:14px;font-size:21px}
.center{text-align:center;margin-top:14px}

/* ===== Versão PC: layout mais amplo e bonito ===== */
@media (min-width:900px){
  #app{max-width:1180px}
  .screen{padding:28px 32px 64px}
  h1{font-size:56px}
  .cards{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
  .pcard img{height:220px}
  .mods{grid-template-columns:1fr 1fr}
  .hero{display:grid;grid-template-columns:1fr 1fr;align-items:stretch}
  .hero img{height:100%;min-height:300px}
  .hero .hbody{padding:32px;display:flex;flex-direction:column;justify-content:center}
  .hero h2{font-size:36px}
  .lesson{padding:36px 40px;max-width:860px;margin:0 auto}
  .lesson p{font-size:22px}
  .lesson-nav{max-width:860px;margin:18px auto 0}
  #s-login .login-card{max-width:480px;padding:44px 40px}
  .qcard,.projeto{max-width:860px;margin:0 auto}
  .diploma{max-width:760px;margin:0 auto}
}