/* =========================================================
   EducaAI — folha de estilo principal
   Paleta base herdada do protótipo original.
   ========================================================= */

:root {
  --primary: #4f46e5;
  --primary-escuro: #4338ca;
  --secondary: #06b6d4;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --light: #f8fafc;
  --gray: #64748b;
  --gray-claro: #e2e8f0;
  --branco: #ffffff;

  --raio: 14px;
  --raio-g: 22px;
  --sombra: 0 4px 12px rgba(15, 23, 42, 0.06);
  --sombra-g: 0 18px 40px rgba(15, 23, 42, 0.12);
  --largura: 1180px;
  --fonte: 'Plus Jakarta Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--fonte);
  background: var(--light);
  color: var(--dark);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.pular {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--primary); color: #fff; padding: .75rem 1rem; border-radius: 0 0 8px 0;
}
.pular:focus { left: 0; }

:focus-visible { outline: 3px solid var(--secondary); outline-offset: 2px; }

/* ---------------- Botões ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .7rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font: inherit; font-weight: 700; font-size: .95rem;
  text-decoration: none; cursor: pointer;
  transition: transform .2s, background .2s, box-shadow .2s, color .2s;
}
.btn:hover { transform: translateY(-2px); }

.btn-primario { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(79, 70, 229, .28); }
.btn-primario:hover { background: var(--primary-escuro); }

.btn-secundario { background: #fff; color: var(--dark); border-color: var(--gray-claro); box-shadow: var(--sombra); }
.btn-secundario:hover { border-color: var(--primary); color: var(--primary); }

.btn-claro { background: #fff; color: var(--primary); }
.btn-contorno { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .55); }
.btn-contorno:hover { background: rgba(255, 255, 255, .12); }

.btn-grande { padding: .95rem 1.8rem; font-size: 1rem; }
.btn-bloco { width: 100%; }
/* Convite de instalacao do app: some quando ja esta instalado (main.js). */
.btn-instalar { padding: .5rem 1rem; font-size: .88rem; }

/* ---------------- Cabeçalho ---------------- */
.cabecalho {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 5vw, 3.5rem);
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.cabecalho.rolado { border-bottom-color: var(--gray-claro); box-shadow: 0 2px 14px rgba(15, 23, 42, .05); }

.logo { display: inline-flex; align-items: center; gap: .4rem; text-decoration: none; font-size: 1.3rem; font-weight: 800; color: var(--primary); }
.logo-claro { color: #fff; }

.menu { display: flex; align-items: center; gap: 1.75rem; }
.menu a { text-decoration: none; color: var(--dark); font-weight: 600; font-size: .95rem; transition: color .2s; }
.menu a:hover, .menu a.ativo { color: var(--primary); }
.menu a.btn { color: #fff; }

.menu-btn {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; cursor: pointer; padding: .4rem;
}
.menu-btn span { width: 24px; height: 2px; background: var(--dark); border-radius: 2px; transition: transform .25s, opacity .25s; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(2rem, 5vw, 4rem);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1rem, 5vw, 3.5rem);
  background: linear-gradient(135deg, #eef2ff 0%, #e0f2fe 55%, #cffafe 100%);
}

/* Assinatura do parceiro, acima do selo do hero. */
.iniciativa {
  margin-bottom: .55rem;
  font-size: .76rem; font-weight: 800; letter-spacing: .06em;
  text-transform: uppercase; color: #dc2626;
}
.iniciativa a {
  color: #dc2626; text-decoration: underline; text-underline-offset: 3px;
}
.iniciativa a:hover { color: #991b1b; }

.selo {
  display: inline-block; margin-bottom: 1.2rem;
  padding: .4rem .9rem; border-radius: 999px;
  background: rgba(255, 255, 255, .8); border: 1px solid rgba(79, 70, 229, .18);
  font-size: .82rem; font-weight: 600; color: var(--primary);
}

.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.12; letter-spacing: -.02em; margin-bottom: 1.1rem; }
.hero .destaque {
  background: linear-gradient(120deg, var(--primary), var(--secondary));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.subtitulo { font-size: 1.08rem; color: #475569; max-width: 56ch; margin-bottom: 2rem; }

.hero-acoes { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero-provas { list-style: none; display: flex; flex-wrap: wrap; gap: 2rem; margin-top: 2.5rem; color: var(--gray); font-size: .92rem; }
.hero-provas strong { display: block; font-size: 1.5rem; color: var(--dark); line-height: 1.2; }

/* Sala de aula simulada */
.hero-visual { display: flex; justify-content: center; }
.sala {
  width: min(100%, 430px);
  background: #fff; border-radius: var(--raio-g);
  box-shadow: var(--sombra-g); overflow: hidden;
}
.sala-topo {
  display: flex; align-items: center; gap: .5rem;
  padding: .85rem 1.1rem; font-size: .85rem; color: var(--gray);
  border-bottom: 1px solid var(--gray-claro);
}
.ponto { width: 9px; height: 9px; border-radius: 50%; background: #ef4444; display: inline-block; }
.ao-vivo { animation: pulsar 1.6s infinite; }
@keyframes pulsar { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

.sala-palco { padding: 2rem 1.5rem 1.25rem; text-align: center; background: linear-gradient(180deg, #f5f3ff, #fff); }

.avatar-circulo {
  position: relative; width: 108px; height: 108px; margin: 0 auto 1.1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: grid; place-items: center;
}
.avatar-circulo.grande { width: 150px; height: 150px; }
.avatar-face { font-size: 3rem; }
.avatar-circulo.grande .avatar-face { font-size: 4.2rem; }
.onda {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid rgba(79, 70, 229, .45);
  animation: onda 2.4s ease-out infinite;
}
.onda-2 { animation-delay: 1.2s; }
@keyframes onda {
  0% { transform: scale(1); opacity: .7; }
  100% { transform: scale(1.55); opacity: 0; }
}

.legenda { font-weight: 600; color: var(--dark-2); font-size: .98rem; }
.palco-aviso { margin-top: .9rem; font-size: .8rem; color: var(--gray); }
.palco-aviso code { background: #eef2ff; padding: .1rem .35rem; border-radius: 5px; }

.sala-chat { padding: 1rem 1.1rem 1.4rem; display: grid; gap: .6rem; background: #fff; }
.balao { padding: .7rem .95rem; border-radius: 14px; font-size: .9rem; max-width: 92%; }
.balao.aluno { background: var(--gray-claro); color: var(--dark-2); justify-self: end; border-bottom-right-radius: 4px; }
.balao.professor { background: #eef2ff; color: var(--dark-2); justify-self: start; border-bottom-left-radius: 4px; }
.balao.erro { background: #fee2e2; color: #991b1b; }

/* ---------------- Seções ---------------- */
.secao { padding: clamp(3.5rem, 7vw, 6rem) clamp(1rem, 5vw, 3.5rem); }
.secao > * { max-width: var(--largura); margin-inline: auto; }

.secao-cabecalho { text-align: center; margin-bottom: 3rem; }
.etiqueta {
  display: inline-block; margin-bottom: .8rem;
  font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--primary);
}
.secao-cabecalho h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); line-height: 1.2; letter-spacing: -.02em; }
.secao-cabecalho p { margin-top: .9rem; color: var(--gray); max-width: 62ch; margin-inline: auto; }

.secao.escuro { background: var(--dark); color: #e2e8f0; }
.secao.escuro .secao-cabecalho h2 { color: #fff; }
.secao.escuro .secao-cabecalho p { color: #94a3b8; }
.secao.escuro .etiqueta { color: var(--secondary); }

.centralizar { text-align: center; margin-top: 3rem; }

/* ---------------- Matérias ---------------- */
.grade-materias { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1.6rem; }
.grade-materias.compacta { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

.card-materia {
  display: flex; flex-direction: column;
  background: #fff; border-radius: var(--raio-g);
  padding: 1.6rem;
  box-shadow: var(--sombra);
  border-top: 4px solid var(--cor-materia, var(--primary));
  transition: transform .25s, box-shadow .25s;
}
.card-materia:hover { transform: translateY(-6px); box-shadow: var(--sombra-g); }

.card-materia.mini { text-align: center; align-items: center; text-decoration: none; color: inherit; padding: 1.4rem 1rem; }
.card-materia.mini h3 { margin-top: .5rem; font-size: 1.05rem; }

.card-materia-topo { display: flex; align-items: center; gap: .9rem; margin-bottom: .9rem; }
.card-icone {
  font-size: 1.7rem; width: 52px; height: 52px; flex: none;
  display: grid; place-items: center; border-radius: 14px;
  background: color-mix(in srgb, var(--cor-materia, var(--primary)) 12%, #fff);
}
.card-materia h3 { font-size: 1.18rem; }
.card-avatar { font-size: .84rem; color: var(--gray); }
.card-resumo { color: var(--gray); font-size: .93rem; margin-bottom: 1.2rem; }

.niveis { display: flex; gap: .35rem; background: #f1f5f9; padding: .3rem; border-radius: 10px; margin-bottom: 1rem; }
.nivel-btn {
  flex: 1; padding: .45rem .3rem; border: 0; border-radius: 8px;
  background: transparent; font: inherit; font-size: .8rem; font-weight: 700; color: var(--gray);
  cursor: pointer; transition: background .2s, color .2s;
}
.nivel-btn:hover { color: var(--cor-materia, var(--primary)); }
.nivel-btn.ativo { background: #fff; color: var(--cor-materia, var(--primary)); box-shadow: var(--sombra); }

.nivel-painel { animation: aparecer .3s ease; }
@keyframes aparecer { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.nivel-descricao { font-size: .9rem; color: var(--dark-2); font-weight: 600; margin-bottom: .7rem; }
.nivel-topicos { list-style: none; display: grid; gap: .4rem; margin-bottom: .9rem; }
.nivel-topicos li { position: relative; padding-left: 1.35rem; font-size: .89rem; color: var(--gray); }
.nivel-topicos li::before {
  content: ''; position: absolute; left: 0; top: .55em;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--cor-materia, var(--primary));
}
.nivel-duracao { font-size: .8rem; font-weight: 700; color: var(--cor-materia, var(--primary)); }

.card-link {
  margin-top: auto; padding-top: 1.1rem;
  font-size: .9rem; font-weight: 700; text-decoration: none;
  color: var(--cor-materia, var(--primary));
}
.card-link:hover { text-decoration: underline; }

/* ---------------- Diferenciais ---------------- */
.grade-diferenciais { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.4rem; }
.card-diferencial {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(148, 163, 184, .22);
  border-radius: var(--raio-g); padding: 1.7rem;
  transition: border-color .25s, transform .25s;
}
.card-diferencial:hover { border-color: var(--secondary); transform: translateY(-4px); }
.dif-icone { font-size: 1.9rem; display: block; margin-bottom: .8rem; }
.card-diferencial h3 { color: #fff; font-size: 1.1rem; margin-bottom: .6rem; }
.card-diferencial p { color: #94a3b8; font-size: .92rem; }

.passos { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.2rem; margin-top: 3rem; counter-reset: passo; }
.passos li { padding: 1.2rem 1.2rem 1.2rem 1.3rem; border-left: 3px solid var(--secondary); background: rgba(255, 255, 255, .04); border-radius: 0 12px 12px 0; }
.passos strong { display: block; color: #fff; font-size: .98rem; margin-bottom: .25rem; }
.passos span { color: #94a3b8; font-size: .88rem; }

/* ---------------- Depoimentos ---------------- */
.grade-depoimentos { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1.6rem; }
.card-depoimento {
  background: #fff; border-radius: var(--raio-g); padding: 1.7rem;
  box-shadow: var(--sombra); border: 1px solid var(--gray-claro);
  display: flex; flex-direction: column; gap: 1rem;
}
.evolucao { display: flex; align-items: center; flex-wrap: wrap; gap: .5rem; font-size: .8rem; font-weight: 700; }
.nivel-de { background: #f1f5f9; color: var(--gray); padding: .25rem .7rem; border-radius: 999px; }
.nivel-para { background: #dcfce7; color: #15803d; padding: .25rem .7rem; border-radius: 999px; }
.seta { color: var(--primary); }
.meses { color: var(--gray); font-weight: 600; }
.card-depoimento blockquote { color: var(--dark-2); font-size: .96rem; font-style: italic; }
.card-depoimento blockquote::before { content: '“'; }
.card-depoimento blockquote::after { content: '”'; }
.card-depoimento figcaption { margin-top: auto; font-size: .88rem; }
.card-depoimento figcaption strong { display: block; }
.card-depoimento figcaption span { color: var(--gray); }

/* ---------------- Planos ---------------- */
.planos { background: linear-gradient(180deg, #fff 0%, #eef2ff 100%); }
/* Cinco planos: cartoes com largura maxima e linhas centralizadas, para que
   a ultima linha nao estique um cartao sozinho na largura toda. */
.grade-planos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 280px));
  gap: 1.3rem; align-items: start; justify-content: center;
}

.card-plano {
  position: relative; background: #fff; border: 1px solid var(--gray-claro);
  border-radius: var(--raio-g); padding: 2rem 1.7rem;
  box-shadow: var(--sombra); display: flex; flex-direction: column; gap: 1rem;
}
.card-plano.destaque {
  border-color: var(--primary); box-shadow: var(--sombra-g);
  transform: translateY(-8px);
}
.selo-plano {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-size: .72rem; font-weight: 800;
  letter-spacing: .06em; text-transform: uppercase;
  padding: .3rem .85rem; border-radius: 999px; white-space: nowrap;
}
.card-plano h3 { font-size: 1.25rem; }
.plano-chamada { color: var(--gray); font-size: .9rem; margin-top: -.6rem; }
.plano-preco { display: flex; align-items: baseline; gap: .2rem; }
.plano-preco .moeda { font-size: 1rem; font-weight: 700; color: var(--gray); }
.plano-preco .valor { font-size: 2.5rem; font-weight: 800; letter-spacing: -.03em; }
.plano-preco .periodo { color: var(--gray); font-size: .95rem; }
.plano-beneficios { list-style: none; display: grid; gap: .55rem; }
.plano-beneficios li { position: relative; padding-left: 1.6rem; font-size: .91rem; color: var(--dark-2); }
.plano-beneficios li::before { content: '✓'; position: absolute; left: 0; color: #16a34a; font-weight: 800; }
.card-plano .btn { margin-top: auto; }

/* Plano que o aluno ja assina: contorno verde, selo proprio e CTA travado. */
.card-plano.atual {
  border-color: #16a34a;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, .14), var(--sombra);
}
.selo-atual { background: #16a34a; }
.btn-plano-atual {
  background: #dcfce7; color: #15803d; border-color: #86efac; cursor: default;
}
.btn-plano-atual:hover { transform: none; }

/* Diferenca mensal em relacao ao plano vigente. */
.plano-troca { font-size: .8rem; font-weight: 700; text-align: center; margin-top: -.3rem; }
.plano-troca.upgrade   { color: #15803d; }
.plano-troca.downgrade { color: #b45309; }
.planos-aviso { color: var(--gray); }
.planos-aviso strong { color: var(--dark); }

/* ---------------- CTA final ---------------- */
.cta-final {
  text-align: center; color: #fff;
  padding: clamp(3.5rem, 7vw, 5.5rem) clamp(1rem, 5vw, 3.5rem);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.cta-final h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin-bottom: .8rem; }
.cta-final p { margin-bottom: 2rem; opacity: .92; }

/* ---------------- Página de matéria ---------------- */
.capa-materia, .capa-aluno {
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 5vw, 3.5rem);
  background: linear-gradient(135deg, var(--cor-materia, var(--primary)), var(--dark));
  color: #fff;
}
.capa-materia > *, .capa-aluno > * { max-width: var(--largura); margin-inline: auto; }
.capa-materia h1, .capa-aluno h1 { font-size: clamp(1.9rem, 4vw, 3rem); margin: .6rem 0; letter-spacing: -.02em; }
.capa-materia p, .capa-aluno p { color: rgba(255, 255, 255, .86); max-width: 62ch; }
.capa-icone { font-size: 2.6rem; display: block; }
.capa-avatar { margin: 1rem 0 1.6rem; }
.capa-aluno { background: linear-gradient(135deg, var(--primary), var(--dark)); }
.capa-aluno .etiqueta { color: #a5b4fc; }

.migalhas { font-size: .85rem; color: rgba(255, 255, 255, .75); margin-bottom: .6rem; }
.migalhas a { color: inherit; }
.migalhas span { margin: 0 .35rem; opacity: .6; }

.trilha { display: grid; gap: 1.2rem; }
.trilha-nivel {
  display: grid; grid-template-columns: 52px 1fr; gap: 1.2rem; align-items: start;
  background: #fff; border-radius: var(--raio-g); padding: 1.6rem;
  border: 1px solid var(--gray-claro); box-shadow: var(--sombra);
}
.trilha-marcador {
  width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800; font-size: 1.2rem;
  color: #fff; background: var(--cor-materia, var(--primary));
}
.trilha-conteudo h3 { font-size: 1.2rem; margin-bottom: .35rem; }

/* ---------------- Sala de aula ---------------- */
.pagina-aula { background: #f1f5f9; }
.aula-grade {
  display: grid; grid-template-columns: 1fr 360px; gap: 1.5rem;
  max-width: var(--largura); margin-inline: auto;
  padding: 1.6rem clamp(1rem, 4vw, 2rem) 3rem;
}
.aula-palco .migalhas { color: var(--gray); margin-bottom: 1rem; }
.aula-palco .migalhas a { color: var(--primary); }

.palco { background: #fff; border-radius: var(--raio-g); box-shadow: var(--sombra); overflow: hidden; }
.palco-topo { display: flex; align-items: center; gap: .5rem; padding: .9rem 1.2rem; border-bottom: 1px solid var(--gray-claro); font-size: .88rem; color: var(--gray); }
.palco-video { padding: 2.5rem 1.5rem; text-align: center; background: linear-gradient(180deg, #f5f3ff, #fff); }
.palco-controles { display: flex; flex-wrap: wrap; gap: .6rem; padding: 1rem 1.2rem; border-top: 1px solid var(--gray-claro); }

.aula-topicos { background: #fff; border-radius: var(--raio-g); padding: 1.5rem; margin-top: 1.5rem; box-shadow: var(--sombra); }
.aula-topicos h2 { font-size: 1.1rem; margin-bottom: .9rem; }
.aula-topicos ol { padding-left: 1.2rem; display: grid; gap: .5rem; color: var(--gray); font-size: .93rem; }
.aula-topicos li.atual { color: var(--dark); font-weight: 700; }

.aula-chat {
  display: flex; flex-direction: column;
  background: #fff; border-radius: var(--raio-g); box-shadow: var(--sombra);
  height: calc(100vh - 140px); position: sticky; top: 100px; overflow: hidden;
}
.chat-topo { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.2rem; border-bottom: 1px solid var(--gray-claro); }
.chat-topo h2 { font-size: 1.05rem; }
.chat-status { font-size: .76rem; font-weight: 700; color: #16a34a; }
.chat-mensagens { flex: 1; overflow-y: auto; padding: 1.1rem; display: grid; gap: .7rem; align-content: start; }
.chat-mensagens .balao { max-width: 100%; white-space: pre-wrap; }
.chat-sugestoes { display: flex; flex-wrap: wrap; gap: .4rem; padding: 0 1.1rem .8rem; }
.chat-sugestoes button {
  border: 1px solid var(--gray-claro); background: #f8fafc; border-radius: 999px;
  padding: .35rem .75rem; font: inherit; font-size: .78rem; color: var(--gray); cursor: pointer;
}
.chat-sugestoes button:hover { border-color: var(--primary); color: var(--primary); }
.chat-form { display: flex; gap: .5rem; padding: .9rem 1.1rem; border-top: 1px solid var(--gray-claro); }
.chat-form input {
  flex: 1; padding: .7rem .9rem; border: 1px solid var(--gray-claro);
  border-radius: 10px; font: inherit; font-size: .92rem;
}
.chat-form input:focus { border-color: var(--primary); outline: none; }

.digitando { display: inline-flex; gap: 4px; }
.digitando i { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); animation: saltar 1s infinite; }
.digitando i:nth-child(2) { animation-delay: .15s; }
.digitando i:nth-child(3) { animation-delay: .3s; }
@keyframes saltar { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-4px); opacity: 1; } }

/* ---------------- Área do aluno ---------------- */
.nivelamento { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.6rem; }
.cartao { background: #fff; border-radius: var(--raio-g); padding: 1.8rem; box-shadow: var(--sombra); border: 1px solid var(--gray-claro); }
.cartao h2 { font-size: 1.25rem; margin-bottom: 1.2rem; }
.cartao label { display: block; font-weight: 700; font-size: .88rem; margin: 1rem 0 .4rem; }
.cartao select, .cartao input[type="range"] { width: 100%; }
.cartao select { padding: .7rem .8rem; border: 1px solid var(--gray-claro); border-radius: 10px; font: inherit; background: #fff; }
.cartao output { display: block; font-weight: 800; color: var(--primary); margin: .4rem 0 1.4rem; }
.nota { font-size: .78rem; color: var(--gray); margin-top: .9rem; }
.nota code { background: #f1f5f9; padding: .1rem .35rem; border-radius: 5px; }
.resultado-nivel { font-size: 1.6rem; font-weight: 800; color: var(--primary); margin-bottom: .6rem; }
.resultado-linha { color: var(--dark-2); font-size: .94rem; margin-bottom: .6rem; }
.resultado .btn { margin-top: 1rem; }

/* ---------------- Rodapé ---------------- */
.rodape { background: var(--dark); color: #94a3b8; padding: clamp(2.5rem, 5vw, 4rem) clamp(1rem, 5vw, 3.5rem) 2rem; }
.rodape-grade {
  max-width: var(--largura); margin-inline: auto;
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2.5rem;
}
.rodape h3 { color: #fff; font-size: .95rem; margin-bottom: .9rem; }
.rodape ul { list-style: none; display: grid; gap: .5rem; }
.rodape a { color: #94a3b8; text-decoration: none; font-size: .9rem; }
.rodape a:hover { color: var(--secondary); }
.rodape-marca p { font-size: .92rem; margin: .8rem 0 1.2rem; max-width: 42ch; }
.redes { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .86rem; }
.rodape-base {
  max-width: var(--largura); margin: 2.5rem auto 0; padding-top: 1.5rem;
  border-top: 1px solid rgba(148, 163, 184, .2);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem;
  font-size: .84rem;
}

/* ---------------- Revelação ao rolar ---------------- */
.revelar { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.revelar.visivel { opacity: 1; transform: none; }

/* ---------------- Responsivo ---------------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .aula-grade { grid-template-columns: 1fr; }
  .aula-chat { height: auto; max-height: 620px; position: static; }
  .rodape-grade { grid-template-columns: 1fr 1fr; }
}

/* O cabeçalho tem muitos itens quando o aluno está logado: colapsa mais cedo. */
@media (max-width: 900px) {
  .menu-btn { display: flex; }
  .menu {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: .25rem;
    background: #fff; padding: 1rem clamp(1rem, 5vw, 3.5rem) 1.5rem;
    border-bottom: 1px solid var(--gray-claro);
    box-shadow: var(--sombra-g);
    display: none;
  }
  .menu.aberto { display: flex; }
  .menu a { padding: .7rem 0; }
  .menu a.btn { justify-content: center; margin-top: .5rem; }
  .menu .usuario { padding: .7rem 0; }
  .form-sair, .form-sair .btn { width: 100%; }
}

@media (max-width: 720px) {
  .card-plano.destaque { transform: none; }
  .grade-planos { grid-template-columns: minmax(0, 1fr); }
  .rodape-grade { grid-template-columns: 1fr; gap: 1.8rem; }
  .trilha-nivel { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .revelar { opacity: 1; transform: none; }
}

/* =========================================================
   Contas: cadastro, login e painel do aluno
   ========================================================= */

/* ---- Cabeçalho: usuário logado ---- */
.usuario { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; font-size: .9rem; color: var(--dark); }
.usuario-inicial {
  width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; font-size: .82rem; color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.form-sair { display: inline-flex; margin: 0; }
.form-sair .btn { padding: .5rem 1rem; font-size: .88rem; }

/* ---- Telas de conta ---- */
.pagina-conta { background: linear-gradient(135deg, #eef2ff 0%, #e0f2fe 55%, #cffafe 100%); }
.conta-grade {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  max-width: 1040px; margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 5vw, 2rem);
}
.conta-formulario {
  background: #fff; border-radius: var(--raio-g); padding: clamp(1.6rem, 4vw, 2.4rem);
  box-shadow: var(--sombra-g);
}
.conta-formulario h1 { font-size: clamp(1.6rem, 3.4vw, 2.1rem); letter-spacing: -.02em; margin-bottom: .4rem; }
.conta-sub { color: var(--gray); font-size: .95rem; margin-bottom: 1.6rem; }

.formulario { display: grid; gap: .3rem; }
.formulario label { font-weight: 700; font-size: .86rem; margin-top: .8rem; }
.formulario input {
  padding: .8rem .9rem; border: 1px solid var(--gray-claro); border-radius: 10px;
  font: inherit; font-size: .95rem; background: #fff; color: var(--dark);
}
.formulario input::placeholder { color: #94a3b8; }
.formulario input:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, .14); }
.formulario .btn { margin-top: 1.6rem; }

.alerta {
  background: #fef2f2; border: 1px solid #fecaca; color: #991b1b;
  border-radius: 12px; padding: .9rem 1rem .9rem 1.2rem; margin-bottom: 1.2rem; font-size: .9rem;
}
.alerta ul { list-style: disc; padding-left: 1rem; display: grid; gap: .25rem; }

.conta-troca { margin-top: 1.4rem; font-size: .9rem; color: var(--gray); text-align: center; }
.conta-troca a { color: var(--primary); font-weight: 700; }

.conta-lateral { padding: 1rem; }
.conta-lateral h2 { font-size: 1.15rem; margin-bottom: 1rem; }
.lista-conferida { list-style: none; display: grid; gap: .7rem; }
.lista-conferida li { position: relative; padding-left: 1.8rem; font-size: .94rem; color: var(--dark-2); }
.lista-conferida li::before {
  content: '✓'; position: absolute; left: 0; top: -1px;
  width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: .72rem; font-weight: 800;
  background: var(--primary); color: #fff;
}
.conta-avatar { display: flex; align-items: center; gap: 1rem; margin-top: 2rem; }
.conta-avatar .avatar-circulo { width: 68px; height: 68px; margin: 0; flex: none; }
.conta-avatar .avatar-face { font-size: 2rem; }
.conta-avatar p { font-size: .92rem; color: var(--gray); }

/* ---- Painel do aluno ---- */
.painel-numeros { display: flex; flex-wrap: wrap; gap: 2.5rem; margin-top: 2rem; }
.painel-numeros strong { display: block; font-size: 2rem; line-height: 1.1; color: #fff; }
.painel-numeros span { font-size: .88rem; color: rgba(255, 255, 255, .8); }

.barra { height: 8px; border-radius: 999px; background: #eef2ff; overflow: hidden; margin: .3rem 0 .7rem; }
.barra span { display: block; height: 100%; border-radius: 999px; background: var(--cor-materia, var(--primary)); }

.cartao.vazio { text-align: center; display: grid; gap: 1.2rem; justify-items: center; }
.cartao.vazio p { color: var(--gray); max-width: 46ch; }

.lista-duvidas { list-style: none; display: grid; gap: .9rem; }
.lista-duvidas li {
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(148, 163, 184, .22);
  border-radius: 12px; padding: 1rem 1.2rem;
}
.duvida-materia { font-size: .78rem; font-weight: 800; letter-spacing: .04em; color: var(--secondary); }
.lista-duvidas p { color: #e2e8f0; font-size: .95rem; margin: .3rem 0; }
.duvida-data { font-size: .78rem; color: #94a3b8; }

@media (max-width: 860px) {
  .conta-grade { grid-template-columns: 1fr; }
  .conta-lateral { order: -1; padding: 0; }
  .conta-avatar { display: none; }
}

/* ---- Retorno do checkout ---- */
.retorno { max-width: 640px; margin-inline: auto; padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 5vw, 2rem); }
.retorno-cartao { text-align: center; }
.retorno-icone { font-size: 3rem; display: block; margin-bottom: .8rem; }
.retorno-cartao h1 { font-size: clamp(1.5rem, 3.2vw, 2rem); margin-bottom: .6rem; }
.retorno-mensagem { color: var(--gray); margin-bottom: 1.8rem; }
.retorno-cartao.estado-sucesso { border-top: 4px solid #16a34a; }
.retorno-cartao.estado-falha   { border-top: 4px solid #dc2626; }
.retorno-cartao.estado-pendente,
.retorno-cartao.estado-erro    { border-top: 4px solid #d97706; }

.retorno-dados { display: grid; gap: .6rem; text-align: left; margin-bottom: 1.8rem; }
.retorno-dados > div { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline;
  border-bottom: 1px dashed var(--gray-claro); padding-bottom: .5rem; }
.retorno-dados dt { font-size: .84rem; color: var(--gray); font-weight: 700; }
.retorno-dados dd { font-size: .94rem; font-weight: 600; text-align: right; word-break: break-all; }
.retorno-dados .mono { font-family: ui-monospace, 'Cascadia Code', Consolas, monospace; font-size: .78rem; font-weight: 500; }
.retorno-acoes { justify-content: center; }

.tag { padding: .15rem .6rem; border-radius: 999px; font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.tag-ativa     { background: #dcfce7; color: #15803d; }
.tag-pendente  { background: #fef3c7; color: #b45309; }
.tag-recusada,
.tag-cancelada { background: #fee2e2; color: #991b1b; }
.tag-trocada   { background: #e2e8f0; color: #475569; }

.form-assinar { margin-top: auto; }
.plano-nota { font-size: .78rem; color: var(--gray); text-align: center; margin-top: -.4rem; }

/* Assinatura no painel */
.assinatura-atual { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; justify-content: space-between; }
.assinatura-atual strong { font-size: 1.05rem; }

/* ---- Áudio: voz do avatar e microfone ---- */
.palco-topo { position: relative; }
.som-btn {
  margin-left: auto; display: inline-flex; align-items: center; gap: .4rem;
  background: #eef2ff; border: 1px solid transparent; border-radius: 999px;
  padding: .3rem .8rem; font: inherit; font-size: .78rem; font-weight: 700;
  color: var(--primary); cursor: pointer; transition: background .2s, color .2s;
}
.som-btn:hover { background: #e0e7ff; }
.som-btn.mudo { background: #f1f5f9; color: var(--gray); }
.som-btn:disabled { opacity: .5; cursor: not-allowed; }

/* O avatar pulsa enquanto está falando */
.palco-video.falando .avatar-circulo { animation: falando 1.1s ease-in-out infinite; }
.palco-video.falando .onda { animation-duration: 1.1s; }
@keyframes falando {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.06); }
}

.btn-mic { padding: .7rem .85rem; font-size: 1rem; line-height: 1; }
.btn-mic.gravando {
  background: #fee2e2; border-color: #fca5a5; color: #b91c1c;
  animation: gravando 1.2s ease-in-out infinite;
}
@keyframes gravando {
  0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, .35); }
  50%      { box-shadow: 0 0 0 6px rgba(220, 38, 38, 0); }
}

.chat-aviso {
  margin: 0; padding: 0 1.1rem .8rem;
  font-size: .8rem; font-weight: 600; color: var(--primary);
}

/* ---- Pronúncia (cursos de idioma) ---- */
.pronuncia .nota { margin: -.5rem 0 1rem; }
.lista-pronuncia { list-style: none; display: grid; gap: .8rem; }
.lista-pronuncia li { display: grid; gap: .15rem; }

.frase-btn {
  display: flex; align-items: center; gap: .6rem; width: 100%;
  text-align: left; cursor: pointer;
  background: #f8fafc; border: 1px solid var(--gray-claro); border-radius: 10px;
  padding: .7rem .9rem; font: inherit; font-size: .96rem; font-weight: 600;
  color: var(--dark); transition: border-color .2s, background .2s;
}
.frase-btn:hover { border-color: var(--cor-materia, var(--primary)); background: #fff; }
.frase-btn.falando {
  border-color: var(--cor-materia, var(--primary));
  background: #fff;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cor-materia, var(--primary)) 18%, transparent);
}
.frase-som { font-size: 1.05rem; flex: none; }
.frase-btn.falando .frase-som { animation: pulsar .9s infinite; }
.frase-traducao { font-size: .84rem; color: var(--gray); padding-left: 2.2rem; }