:root {
  --fundo: #1b120c;
  --fundo2: #26190f;
  --card: #2f2014;
  --linha: #4a3420;
  --texto: #f7ecdf;
  --suave: #c9b49c;
  --ouro: #f1b24a;
  --ouro2: #e08a1e;
  --vermelho: #c0392b;
  --azul: #2f5d8a;
  --verde: #3fa66b;
  --raio: 18px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--texto);
  background:
    radial-gradient(1200px 600px at 20% -10%, #4a2c14 0%, transparent 60%),
    radial-gradient(900px 500px at 110% 110%, #3a1d10 0%, transparent 60%),
    var(--fundo);
  min-height: 100vh;
}
button { font: inherit; cursor: pointer; }
.escondido { display: none !important; }

/* ---------- botões ---------- */
.btn {
  border: 0; border-radius: 999px; padding: 12px 22px; font-weight: 700;
  color: #2a1606; background: linear-gradient(180deg, var(--ouro), var(--ouro2));
  box-shadow: 0 6px 20px rgba(224, 138, 30, .35); transition: transform .12s, filter .12s;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .6; cursor: wait; }
.btn-grande { font-size: 1.1rem; padding: 16px 30px; }
.btn-parar { background: linear-gradient(180deg, #e05a4b, var(--vermelho)); color: #fff; box-shadow: 0 6px 20px rgba(192,57,43,.35); }
.btn-sec { background: transparent; color: var(--ouro); border: 2px solid var(--ouro); box-shadow: none; }
.btn-ok { background: linear-gradient(180deg, #52c084, var(--verde)); color: #fff; box-shadow: 0 6px 20px rgba(63,166,107,.3); }

/* ---------- login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card {
  width: 100%; max-width: 380px; text-align: center; padding: 28px 26px 30px;
  background: var(--card); border: 1px solid var(--linha); border-radius: 24px;
  box-shadow: 0 30px 80px rgba(0,0,0,.45);
}
.login-avatar .avatar { width: 150px; height: auto; }
.login h1 { font-family: "Rye", serif; font-weight: 400; color: var(--ouro); margin: 6px 0 4px; font-size: 1.9rem; }
.login .sub { color: var(--suave); margin: 0 0 22px; }
.login form { display: grid; gap: 10px; text-align: left; }
.login label { font-weight: 600; font-size: .9rem; color: var(--suave); }
.login input {
  width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--linha);
  background: var(--fundo2); color: var(--texto); font-size: 1rem;
}
.login input:focus { outline: 2px solid var(--ouro); border-color: transparent; }
.login .erro { color: #ff8b7d; margin: 0; font-size: .9rem; }
.login .btn { margin-top: 8px; width: 100%; }
.rodape { position: fixed; bottom: 14px; left: 0; right: 0; text-align: center; color: #8a7560; font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; }

/* ---------- app ---------- */
.app { max-width: 1180px; margin: 0 auto; padding: 16px 18px 40px; }
.topo { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 2px 16px; }
.marca { display: flex; align-items: center; gap: 12px; }
.marca .estrela { font-size: 1.6rem; color: var(--ouro); }
.marca strong { font-family: "Rye", serif; font-weight: 400; font-size: 1.35rem; color: var(--ouro); display: block; line-height: 1.1; }
.marca small { color: var(--suave); font-size: .8rem; }
.topo-dir { display: flex; align-items: center; gap: 14px; }
.sequencia { background: var(--card); border: 1px solid var(--linha); padding: 6px 12px; border-radius: 999px; font-weight: 700; font-size: .9rem; }
.link-sair { color: var(--suave); text-decoration: none; font-size: .9rem; }
.link-sair:hover { color: var(--texto); }

.palco { display: grid; grid-template-columns: 1.05fr 1fr; gap: 20px; align-items: start; }
@media (max-width: 900px) { .palco { grid-template-columns: 1fr; } }

.professor {
  background: linear-gradient(180deg, #3a2716, var(--card)); border: 1px solid var(--linha);
  border-radius: 24px; padding: 26px 22px 22px; text-align: center; position: sticky; top: 12px;
}
@media (max-width: 900px) { .professor { position: static; } }

.avatar-wrap { position: relative; width: min(300px, 70vw); margin: 0 auto 8px; aspect-ratio: 1 / 1; display: grid; place-items: center; }
.avatar-wrap .avatar { position: relative; width: 88%; height: auto; z-index: 1; filter: drop-shadow(0 18px 24px rgba(0,0,0,.35)); }
.anel {
  position: absolute; inset: 6%; border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, rgba(241,178,74,.28), rgba(241,178,74,.06) 60%, transparent 70%);
  border: 2px solid rgba(241,178,74,.25); transition: transform .08s linear, border-color .2s, background .2s;
}
.avatar-wrap.ouvindo .anel { border-color: rgba(63,166,107,.7); background: radial-gradient(circle at 50% 45%, rgba(63,166,107,.28), rgba(63,166,107,.05) 60%, transparent 70%); }
.avatar-wrap.falando .anel { border-color: rgba(241,178,74,.8); }

/* vida no avatar */
.avatar .cabeca, .avatar .chapeu { transform-origin: 120px 180px; animation: balanco 5s ease-in-out infinite; }
.avatar-wrap.falando .avatar .cabeca, .avatar-wrap.falando .avatar .chapeu { animation-duration: 2.4s; }
.avatar .olhos { transform-origin: 120px 122px; animation: piscar 4.6s infinite; }
@keyframes balanco { 0%,100% { transform: rotate(-1.2deg) translateY(0); } 50% { transform: rotate(1.2deg) translateY(-2px); } }
@keyframes piscar { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(.1); } }

.status { font-size: 1.05rem; min-height: 1.6em; margin: 6px 0 4px; }
.aula-atual { margin: 6px auto 16px; max-width: 420px; }
.aula-atual b { display: block; font-size: 1.15rem; color: var(--ouro); }
.aula-atual span { color: var(--suave); font-size: .92rem; }
.controles { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.dica { color: var(--suave); font-size: .82rem; margin: 16px auto 0; max-width: 420px; line-height: 1.45; }
.tempo { margin: 16px auto 0; max-width: 360px; font-size: .88rem; color: var(--suave); }
.tempo .barra { height: 8px; border-radius: 99px; background: var(--fundo2); overflow: hidden; margin-bottom: 6px; }
.tempo .barra i { display: block; height: 100%; background: linear-gradient(90deg, var(--ouro2), var(--ouro)); border-radius: 99px; transition: width .4s; }
.tempo b { color: var(--texto); }

.painel { background: var(--card); border: 1px solid var(--linha); border-radius: 24px; padding: 14px; min-height: 420px; }
.abas { display: flex; gap: 6px; background: var(--fundo2); padding: 5px; border-radius: 14px; margin-bottom: 14px; }
.aba { flex: 1; border: 0; background: transparent; color: var(--suave); padding: 10px; border-radius: 10px; font-weight: 600; }
.aba.ativa { background: var(--card); color: var(--texto); box-shadow: 0 2px 8px rgba(0,0,0,.25); }

.modos { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.modo {
  text-align: left; border: 1px solid var(--linha); background: var(--fundo2); color: var(--texto);
  padding: 12px 14px; border-radius: 14px; font-weight: 700; line-height: 1.3;
}
.modo small { color: var(--suave); font-weight: 400; }
.modo.selecionada, .item-aula.selecionada { border-color: var(--ouro); box-shadow: 0 0 0 2px rgba(241,178,74,.25) inset; }

.fase { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--suave); margin: 6px 4px 8px; }
.lista-aulas { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.fase-li { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--suave); margin: 10px 4px 0; }
.item-aula {
  width: 100%; display: flex; gap: 12px; align-items: center; text-align: left;
  border: 1px solid var(--linha); background: var(--fundo2); color: var(--texto);
  padding: 11px 12px; border-radius: 14px;
}
.item-aula:hover { border-color: #6b4a2c; }
.item-aula .num {
  flex: 0 0 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: #3d2a19; color: var(--ouro); font-weight: 800;
}
.item-aula.feita .num { background: var(--verde); color: #fff; }
.item-aula .txt b { display: block; font-weight: 700; }
.item-aula .txt small { color: var(--suave); }
.em-aula .item-aula, .em-aula .modo { opacity: .55; cursor: not-allowed; }

.explica { color: var(--suave); font-size: .88rem; margin: 2px 4px 12px; line-height: 1.45; }
.transcricao { max-height: 60vh; overflow-y: auto; display: grid; gap: 10px; padding: 2px; }
.transcricao .vazio { color: var(--suave); text-align: center; padding: 30px 0; }
.fala { padding: 10px 14px; border-radius: 14px; max-width: 92%; line-height: 1.45; }
.fala .quem { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 2px; opacity: .8; }
.fala.voce { background: #23384d; justify-self: end; border-bottom-right-radius: 4px; }
.fala.voce .quem { color: #9cc7f0; }
.fala.prof { background: var(--fundo2); border-bottom-left-radius: 4px; }
.fala.prof .quem { color: var(--ouro); }