/* =====================================================
   PRÉ-ENEM DIGITAL MT — QUÍMICA · TERMOQUÍMICA
   Estilo: Bio+Tech EduDesign · Governo de Mato Grosso
   Tema Cromático: Calor (laranja/vermelho) + Gelo (azul)
   ===================================================== */
:root{
  --bg1:#1a0f0a; --bg2:#3d1f0f; --bg3:#7c2d12;
  --primary:#f97316; --primary-dark:#c2410c; --accent:#38bdf8;
  --gold:#fbbf24; --purple:#a78bfa; --ice:#7dd3fc;
  --red:#ef4444; --green:#22c55e; --flame:#dc2626;
  --card:#292524; --card2:#78350f;
  --text:#fef3c7; --muted:#a8a29e;
  --shadow:0 10px 30px rgba(0,0,0,.5);
  --mentor-bg:linear-gradient(135deg,rgba(167,139,250,.15),rgba(56,189,248,.1));
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Segoe UI',Tahoma,sans-serif;
  background:linear-gradient(135deg,var(--bg1) 0%,var(--bg2) 40%,#0c4a6e 100%);
  color:var(--text); min-height:100vh; overflow-x:hidden;
}
body::before{
  content:''; position:fixed; inset:0; z-index:-1;
  background:
    radial-gradient(circle at 15% 20%,rgba(249,115,22,.15) 0,transparent 40%),
    radial-gradient(circle at 85% 80%,rgba(56,189,248,.12) 0,transparent 40%);
  pointer-events:none;
}
.container{max-width:1180px;margin:0 auto;padding:20px;}

/* ---------- INSTITUTIONAL BAR ---------- */
.inst-bar{
  background:rgba(255,255,255,.95); border-radius:14px; padding:10px 20px;
  margin-bottom:18px; display:flex; align-items:center; justify-content:space-between;
  gap:16px; flex-wrap:wrap; box-shadow:var(--shadow);
}
.inst-bar img.logo-biotech{height:52px}
.inst-bar img.logo-gov{height:44px}
.inst-bar .inst-txt{color:#7c2d12; font-weight:700; font-size:.9rem; text-align:center; flex:1; min-width:180px}
.inst-bar .inst-txt small{display:block; color:#475569; font-weight:400; font-size:.75rem; margin-top:2px}

/* ---------- HEADER / HUD ---------- */
header{
  display:flex;justify-content:space-between;align-items:center;
  background:rgba(41,37,36,.85); backdrop-filter:blur(10px);
  padding:14px 22px;border-radius:16px;margin-bottom:20px;
  border:2px solid var(--primary); box-shadow:var(--shadow),0 0 20px rgba(249,115,22,.2);
  flex-wrap:wrap;gap:10px;
}
header h1{font-size:1.25rem;color:var(--primary);display:flex;align-items:center;gap:10px;text-shadow:0 0 12px rgba(249,115,22,.5)}
.hud{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.hud .chip{
  background:linear-gradient(135deg,var(--primary),var(--flame));
  padding:8px 14px;border-radius:20px;font-weight:700;font-size:.85rem;
  display:flex;align-items:center;gap:6px;box-shadow:0 4px 10px rgba(220,38,38,.3);color:#fff;
}
.hud .avatar-mini{width:34px;height:34px;border-radius:50%;object-fit:cover;border:2px solid var(--gold)}
.lives .heart{color:#fca5a5;font-size:1.1rem;transition:.3s}
.lives .heart.lost{color:#44403c;transform:scale(.8)}

/* Badge gallery no HUD */
.badge-gallery{display:flex;gap:4px;background:rgba(0,0,0,.35);padding:4px 10px;border-radius:20px}
.badge-gallery img{width:32px;height:32px;object-fit:contain;filter:drop-shadow(0 0 4px rgba(251,191,36,.6));transition:.3s;cursor:pointer}
.badge-gallery img:hover{transform:scale(1.25) rotate(8deg)}

/* ---------- PROGRESS ---------- */
.progress-wrap{background:rgba(0,0,0,.35);border-radius:12px;padding:10px 14px;margin-bottom:20px}
.progress-bar{background:#44403c;height:14px;border-radius:8px;overflow:hidden;position:relative}
.progress-fill{
  height:100%;width:0%;
  background:linear-gradient(90deg,var(--ice),var(--accent),var(--primary),var(--gold),var(--flame));
  border-radius:8px;transition:width .8s ease;
  box-shadow:0 0 15px var(--primary);
}
.progress-text{text-align:center;margin-top:6px;font-size:.85rem;color:var(--muted)}

/* ---------- SCREENS ---------- */
.screen{display:none;animation:fadeIn .6s ease}
.screen.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ---------- WELCOME ---------- */
.welcome{text-align:center;padding:40px 20px}
.welcome h2{font-size:2.3rem;background:linear-gradient(90deg,var(--primary),var(--gold),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:12px}
.welcome .subtitle{color:var(--muted);font-size:1.05rem;margin-bottom:20px}
.input-nome{
  padding:12px 20px;font-size:1.05rem;border-radius:25px;border:2px solid var(--primary);
  background:rgba(255,255,255,.1);color:var(--text);width:280px;max-width:80%;text-align:center;
  margin:15px 0;
}
.input-nome::placeholder{color:var(--muted)}

/* ---------- CARD DE CIENTISTAS ---------- */
.scientist-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:16px; margin:20px 0;
}
.scientist-card{
  background:linear-gradient(145deg,var(--card),#1c1917);
  border:3px solid transparent; border-radius:18px; padding:16px;
  cursor:pointer; transition:.35s; text-align:center; position:relative;
  overflow:hidden;
}
.scientist-card::before{
  content:''; position:absolute; top:-2px; left:-2px; right:-2px; bottom:-2px;
  background:linear-gradient(135deg,var(--primary),var(--gold),var(--accent));
  border-radius:18px; z-index:-1; opacity:0; transition:.35s;
}
.scientist-card:hover{transform:translateY(-8px) scale(1.02); border-color:var(--primary); box-shadow:0 15px 35px rgba(249,115,22,.35)}
.scientist-card:hover::before{opacity:1}
.scientist-card.selected{
  border-color:var(--gold); box-shadow:0 0 30px rgba(251,191,36,.5), inset 0 0 20px rgba(251,191,36,.15);
  background:linear-gradient(145deg,#7c2d12,#1c1917);
}
.scientist-card img{
  width:130px; height:130px; border-radius:50%; object-fit:cover;
  border:4px solid var(--primary); box-shadow:0 4px 15px rgba(0,0,0,.5);
  margin-bottom:10px;
}
.scientist-card.selected img{border-color:var(--gold); animation:pulseGold 2s infinite}
@keyframes pulseGold{0%,100%{box-shadow:0 0 15px rgba(251,191,36,.4)}50%{box-shadow:0 0 30px rgba(251,191,36,.9)}}
.scientist-card h4{color:var(--gold); font-size:1rem; margin-bottom:4px}
.scientist-card .area{color:var(--accent); font-size:.72rem; font-weight:700; text-transform:uppercase; letter-spacing:.5px; margin-bottom:6px}
.scientist-card .bio{color:var(--muted); font-size:.78rem; line-height:1.4}

/* ---------- BOTÕES ---------- */
.btn{
  padding:14px 32px;font-size:1rem;font-weight:700;border:none;border-radius:30px;
  cursor:pointer;transition:.3s;color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--flame));
  box-shadow:0 6px 18px rgba(249,115,22,.4);
  margin:6px;
}
.btn:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 10px 25px rgba(220,38,38,.6)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.secondary{background:linear-gradient(135deg,#57534e,#292524)}
.btn.gold{background:linear-gradient(135deg,var(--gold),#f59e0b);color:#1c1917}
.btn.ice{background:linear-gradient(135deg,var(--ice),var(--accent));color:#0c4a6e}

/* ---------- TRILHA ---------- */
.trilha{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:20px 0}
.missao{
  background:var(--card);border-radius:16px;padding:20px;text-align:center;
  border:2px solid #44403c;cursor:pointer;transition:.3s;position:relative;
}
.missao:hover:not(.locked){transform:translateY(-6px);border-color:var(--primary);box-shadow:var(--shadow)}
.missao.locked{opacity:.45;cursor:not-allowed;filter:grayscale(.6)}
.missao.completed{border-color:var(--gold);background:linear-gradient(135deg,var(--card),#78350f)}
.missao .icon{font-size:2.8rem;margin-bottom:8px}
.missao h3{color:var(--primary);font-size:1rem;margin-bottom:6px}
.missao p{color:var(--muted);font-size:.82rem}
.missao .badge-preview{width:88px;height:88px;object-fit:contain;margin:6px auto;filter:drop-shadow(0 4px 10px rgba(251,191,36,.5))}
.missao .badge-check{position:absolute;top:8px;right:8px;font-size:1.5rem;color:var(--gold);display:none}
.missao.completed .badge-check{display:block;animation:pop .5s}
@keyframes pop{0%{transform:scale(0)}70%{transform:scale(1.3)}100%{transform:scale(1)}}

/* ---------- CONTEÚDO / TEORIA ---------- */
.card{
  background:rgba(41,37,36,.9);border-radius:16px;padding:26px;margin-bottom:20px;
  border-left:5px solid var(--primary);box-shadow:var(--shadow);
}
.card h2{color:var(--primary);margin-bottom:14px;font-size:1.5rem;display:flex;gap:10px;align-items:center}
.card h3{color:var(--gold);margin:14px 0 8px;font-size:1.1rem}
.card p, .card li{color:#fef3c7;line-height:1.7;margin-bottom:8px}
.card ul{padding-left:22px}
.info-box{
  background:linear-gradient(135deg,rgba(249,115,22,.15),rgba(56,189,248,.1));
  border:1px solid var(--accent);border-radius:10px;padding:14px;margin:12px 0;
}
.formula{
  background:#1c1917;padding:12px;border-radius:8px;text-align:center;
  font-family:'Courier New',monospace;font-size:1.1rem;color:var(--gold);
  border:1px dashed var(--gold);margin:10px 0;
}
.exemplo{background:rgba(251,191,36,.1);border-left:3px solid var(--gold);padding:12px;border-radius:6px;margin:10px 0}

/* Boxes especiais Endo/Exo */
.endo-exo{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:14px 0}
@media(max-width:640px){.endo-exo{grid-template-columns:1fr}}
.endo,.exo{padding:14px;border-radius:12px;border:2px solid}
.endo{background:linear-gradient(135deg,rgba(56,189,248,.15),rgba(125,211,252,.08));border-color:var(--ice)}
.exo{background:linear-gradient(135deg,rgba(249,115,22,.15),rgba(220,38,38,.08));border-color:var(--flame)}
.endo h4{color:var(--ice);margin-bottom:6px}
.exo h4{color:var(--flame);margin-bottom:6px}

/* Diagrama de entalpia SVG */
.enthalpy-diag{background:#0c0a09;border:1px solid var(--primary);border-radius:12px;padding:14px;margin:12px 0;text-align:center}
.enthalpy-diag svg{max-width:100%;height:auto}

/* ---------- CAIXA DE MENTORIA ---------- */
.mentor-box{
  display:flex; gap:16px; align-items:center;
  background:var(--mentor-bg);
  border:2px solid var(--purple); border-radius:16px; padding:14px 18px;
  margin:16px 0; box-shadow:0 6px 20px rgba(167,139,250,.2);
  animation:mentorSlide .6s ease;
}
@keyframes mentorSlide{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:translateX(0)}}
.mentor-box img{
  width:88px; height:88px; border-radius:50%; object-fit:cover;
  border:3px solid var(--purple); flex-shrink:0;
  box-shadow:0 4px 12px rgba(0,0,0,.5);
}
.mentor-content h4{color:var(--purple); font-size:1rem; margin-bottom:6px}
.mentor-content p{color:#fef3c7; font-size:.95rem; font-style:italic; line-height:1.55; margin:0}
.mentor-content .fala::before{content:'"'; color:var(--gold); font-size:1.5rem; font-weight:800; margin-right:2px}
.mentor-content .fala::after{content:'"'; color:var(--gold); font-size:1.5rem; font-weight:800; margin-left:2px}

/* ---------- QUESTÃO ---------- */
.questao-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;flex-wrap:wrap;gap:10px}
.questao-tag{background:var(--primary-dark);padding:4px 12px;border-radius:12px;font-size:.8rem;font-weight:700;color:#fff}
.timer{background:var(--flame);padding:6px 14px;border-radius:20px;font-weight:700;font-family:monospace;color:#fff}
.timer.warn{animation:pulse .8s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}

.enunciado{background:rgba(0,0,0,.35);padding:16px;border-radius:10px;margin-bottom:14px;line-height:1.65;font-size:.98rem}
.enunciado table{width:100%;border-collapse:collapse;margin:10px 0;background:rgba(28,25,23,.7)}
.enunciado th, .enunciado td{border:1px solid var(--primary);padding:6px 10px;text-align:center}
.enunciado th{background:var(--primary-dark);color:#fff}
.fonte{color:var(--muted);font-size:.8rem;font-style:italic;margin-top:8px}

.alternativas{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.alt{
  background:var(--card);padding:14px 18px;border-radius:10px;cursor:pointer;
  border:2px solid #44403c;transition:.25s;display:flex;align-items:center;gap:12px;
}
.alt:hover:not(.disabled){border-color:var(--primary);transform:translateX(6px);background:#44403c}
.alt.disabled{cursor:default}
.alt .letra{
  background:var(--primary);color:#fff;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;
}
.alt.correct{border-color:var(--green);background:rgba(34,197,94,.2)}
.alt.correct .letra{background:var(--green)}
.alt.wrong{border-color:var(--red);background:rgba(239,68,68,.15)}
.alt.wrong .letra{background:var(--red)}

.feedback{
  margin-top:14px;padding:16px;border-radius:12px;display:none;
  animation:slideDown .4s ease; border-left:5px solid;
}
.feedback.show{display:block}
.feedback.ok{background:rgba(34,197,94,.15);border-color:var(--green)}
.feedback.err{background:rgba(239,68,68,.15);border-color:var(--red)}
.feedback h4{margin-bottom:8px;font-size:1.05rem}
.feedback .explain{color:#fef3c7;line-height:1.65;font-size:.93rem}
.feedback .explain strong{color:var(--gold)}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}

/* ---------- LAB VIRTUAL – CALORÍMETRO ---------- */
.lab{background:linear-gradient(135deg,#7c2d12,#1c1917);padding:20px;border-radius:14px;margin:14px 0;border:2px solid var(--primary)}
.calorimetro{display:flex;gap:20px;justify-content:center;align-items:center;flex-wrap:wrap;margin:20px 0}
.reactor{
  width:180px;height:220px;background:radial-gradient(circle at 50% 70%,var(--flame) 0,var(--primary-dark) 70%);
  border:4px solid #a3a3a3;border-radius:16px;position:relative;
  display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 30px rgba(0,0,0,.5),0 0 40px rgba(249,115,22,.3);
}
.reactor .flame-icon{font-size:4rem;animation:flicker .5s infinite alternate}
@keyframes flicker{from{opacity:.85;transform:scale(1)}to{opacity:1;transform:scale(1.08)}}
.reactor::after{content:'CALORÍMETRO';position:absolute;bottom:-30px;font-size:.75rem;letter-spacing:2px;color:var(--muted);width:100%;text-align:center}
.slider-group{margin:12px 0}
.slider-group label{display:block;margin-bottom:6px;color:var(--gold);font-weight:600}
input[type=range]{width:100%;accent-color:var(--primary)}
.combustivel-select{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0;justify-content:center}
.combustivel-btn{
  padding:10px 16px;background:var(--card);color:var(--gold);border:2px solid var(--primary);
  border-radius:20px;cursor:pointer;font-weight:700;font-size:.85rem;transition:.25s;
}
.combustivel-btn:hover{background:var(--primary);color:#fff}
.combustivel-btn.active{background:var(--primary);color:#fff;box-shadow:0 0 15px var(--primary)}

/* ---------- FINAL ---------- */
.final{text-align:center;padding:30px 20px}
.final .trophy{font-size:6rem;animation:bounce 1.5s infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-15px)}}
.final h2{font-size:2.2rem;color:var(--gold);margin:16px 0;text-shadow:0 0 20px rgba(251,191,36,.5)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:20px 0}
.stat{background:var(--card);padding:16px;border-radius:12px;border:2px solid var(--primary)}
.stat .num{font-size:2rem;font-weight:800;color:var(--gold)}
.stat .lbl{color:var(--muted);font-size:.85rem}
.medalha{font-size:5rem;margin:20px 0}
.final-badges{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin:16px 0}
.final-badges img{width:88px;height:88px;object-fit:contain;filter:drop-shadow(0 6px 12px rgba(251,191,36,.6));animation:bounce 2s infinite}
.final-badges img:nth-child(2){animation-delay:.2s}
.final-badges img:nth-child(3){animation-delay:.4s}
.final-badges img:nth-child(4){animation-delay:.6s}
.final-badges img:nth-child(5){animation-delay:.8s}

/* ---------- CONFETTI ---------- */
.confetti{position:fixed;top:-10px;width:10px;height:10px;pointer-events:none;z-index:9999;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg);opacity:0}}

/* ---------- TOAST ---------- */
.toast{
  position:fixed;top:20px;right:20px;background:var(--card);padding:14px 20px;border-radius:12px;
  border-left:5px solid var(--gold);box-shadow:var(--shadow);z-index:1000;display:none;
  animation:slideIn .4s ease;max-width:280px;color:var(--text);
}
.toast.show{display:block}
@keyframes slideIn{from{transform:translateX(400px)}to{transform:translateX(0)}}

/* ---------- FOOTER ---------- */
footer{
  margin-top:30px; padding:20px; text-align:center; color:var(--muted); font-size:.85rem;
  border-top:1px solid rgba(255,255,255,.1);
}
footer a{color:var(--gold); text-decoration:none}
footer a:hover{text-decoration:underline}

/* ---------- RESPONSIVO ---------- */
@media(max-width:640px){
  header h1{font-size:1rem}
  .hud .chip{font-size:.72rem;padding:6px 10px}
  .welcome h2{font-size:1.7rem}
  .card{padding:18px}
  .btn{padding:12px 22px;font-size:.9rem}
  .mentor-box{flex-direction:column; text-align:center}
  .mentor-box img{width:70px;height:70px}
  .inst-bar{flex-direction:column;text-align:center}
  .inst-bar img.logo-biotech, .inst-bar img.logo-gov{height:38px}
}