:root {
  --est-navy: #0a1628;
  --est-navy-2: #142138;
  --est-cyan: #00d4ff;
  --est-cyan-dark: #0088aa;
  --est-bg: #f6f8fb;
  --est-card: #ffffff;
  --est-border: #e2e8f0;
  --est-txt: #1e293b;
  --est-mute: #64748b;
  --est-verde: #0aa970;
  --est-amarelo: #e6a41f;
  --est-vermelho: #e04b4b;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--est-bg); color: var(--est-txt); font-size: 15px;
}
a { color: var(--est-cyan-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.est-bloqueio { padding: 48px 24px; text-align: center; color: var(--est-mute); }
.est-bloqueio h1 { color: var(--est-navy); }

/* ---- Header ---- */
.est-header { background: var(--est-navy); color: #e6edf6; box-shadow: 0 2px 6px rgba(0,0,0,.15); }
.est-header-topo { display: flex; align-items: center; gap: 14px; padding: 0 16px; height: 52px; }
.est-voltar { color: #94a3b8; font-size: 13px; }
.est-voltar:hover { color: var(--est-cyan); text-decoration: none; }
.est-marca { font-size: 16px; letter-spacing: .5px; font-weight: 600; }
.est-usuario {
  margin-left: auto; font-size: 12px; color: #94a3b8;
  /* E-mail não tem espaço para quebrar: sem isto, um endereço longo empurra o
     header além da viewport num celular de ~390px. */
  max-width: 40vw; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.est-abas { display: flex; gap: 4px; padding: 0 12px; overflow-x: auto; }
.est-aba {
  padding: 9px 14px; font-size: 14px; color: #94a3b8; white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.est-aba:hover { color: #e6edf6; text-decoration: none; }
.est-aba.ativo { color: var(--est-cyan); border-bottom-color: var(--est-cyan); }

/* ---- Layout ---- */
.est-main { max-width: 900px; margin: 0 auto; padding: 20px 16px 64px; }
.est-titulo-pagina { font-size: 22px; margin: 4px 0 18px; color: var(--est-navy); }
.est-vazio { padding: 40px 16px; text-align: center; color: var(--est-mute); }

/* ---- Cards de trilha ---- */
.est-cards { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 720px) { .est-cards { grid-template-columns: 1fr 1fr; } }
.est-card {
  background: var(--est-card); border: 1px solid var(--est-border); border-radius: 10px;
  padding: 16px; display: block; color: inherit;
}
.est-card:hover { border-color: var(--est-cyan-dark); text-decoration: none; }
.est-card h2 { font-size: 17px; margin: 0 0 6px; color: var(--est-navy); }
.est-card p { margin: 0 0 12px; color: var(--est-mute); font-size: 14px; line-height: 1.5; }
.est-card-meta { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--est-mute); margin-bottom: 10px; }
.est-badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.est-badge.campo { background: #e0f2fe; color: #075985; }
.est-badge.noc { background: #ede9fe; color: #5b21b6; }
.est-badge.todos { background: #f1f5f9; color: #475569; }
.est-badge.ok { background: #dcfce7; color: #166534; }

/* ---- Barra de progresso ---- */
.est-barra { height: 8px; background: #e2e8f0; border-radius: 999px; overflow: hidden; }
.est-barra > i { display: block; height: 100%; background: var(--est-cyan-dark); }
.est-barra.completa > i { background: var(--est-verde); }
.est-progresso-txt { font-size: 12px; color: var(--est-mute); margin-top: 6px; }

/* ---- Sumário da trilha ---- */
.est-secao-titulo {
  font-size: 12px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--est-mute); margin: 22px 0 8px;
}
.est-aula-item {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--est-card); border: 1px solid var(--est-border); border-radius: 8px;
  padding: 12px 14px; margin-bottom: 8px; color: inherit;
}
.est-aula-item:hover { border-color: var(--est-cyan-dark); text-decoration: none; }
.est-aula-marca { font-size: 18px; line-height: 1.2; width: 22px; flex: none; text-align: center; }
.est-aula-corpo { min-width: 0; }
.est-aula-corpo strong { display: block; font-size: 15px; font-weight: 600; color: var(--est-navy); }
.est-aula-corpo span { font-size: 12px; color: var(--est-mute); }

/* ---- Leitura da aula ---- */
.est-leitura { background: var(--est-card); border: 1px solid var(--est-border); border-radius: 10px; padding: 20px 18px; }
.est-leitura h1, .est-leitura h2, .est-leitura h3 { color: var(--est-navy); line-height: 1.25; }
.est-leitura h1 { font-size: 24px; margin: 0 0 14px; }
.est-leitura h2 { font-size: 19px; margin: 26px 0 10px; }
.est-leitura h3 { font-size: 16px; margin: 20px 0 8px; }
.est-leitura p, .est-leitura li { font-size: 16px; line-height: 1.7; }
.est-leitura code { background: #f1f5f9; padding: 1px 5px; border-radius: 4px; font-size: 14px; }
.est-leitura pre { background: var(--est-navy); color: #e6edf6; padding: 12px; border-radius: 8px; overflow-x: auto; }
.est-leitura pre code { background: none; color: inherit; }
.est-leitura blockquote {
  margin: 16px 0; padding: 10px 14px; border-left: 4px solid var(--est-amarelo);
  background: #fffbeb; color: #713f12;
}
.est-leitura img { max-width: 100%; height: auto; }
.est-leitura table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; display: block; overflow-x: auto; }
.est-leitura th, .est-leitura td { border: 1px solid var(--est-border); padding: 7px 10px; text-align: left; }
.est-leitura th { background: #f8fafc; }

/* ---- Quiz ---- */
.est-quiz { margin-top: 22px; }
.est-questao { background: var(--est-card); border: 1px solid var(--est-border); border-radius: 10px; padding: 16px; margin-bottom: 12px; }
.est-questao p.enunciado { font-weight: 600; margin: 0 0 10px; }
.est-alt { display: flex; gap: 10px; align-items: flex-start; padding: 9px 10px; border-radius: 8px; cursor: pointer; }
.est-alt:hover { background: #f8fafc; }
.est-alt input { margin-top: 3px; flex: none; }
.est-questao.acertou { border-color: var(--est-verde); }
.est-questao.errou { border-color: var(--est-vermelho); }
.est-explicacao { margin-top: 10px; padding: 10px 12px; background: #f8fafc; border-radius: 8px; font-size: 14px; color: var(--est-mute); }

/* ---- Botões ---- */
.est-btn {
  display: inline-block; padding: 10px 18px; border-radius: 8px; border: 1px solid transparent;
  background: var(--est-cyan-dark); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer;
}
.est-btn:hover { background: #0077a0; text-decoration: none; color: #fff; }
.est-btn[disabled] { opacity: .5; cursor: not-allowed; }
.est-btn.secundario { background: transparent; color: var(--est-cyan-dark); border-color: var(--est-border); }
.est-acoes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

/* ---- Formulários (admin) ---- */
.est-form { background: var(--est-card); border: 1px solid var(--est-border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.est-form label { display: block; font-size: 13px; font-weight: 600; margin: 10px 0 4px; color: var(--est-navy); }
.est-form input, .est-form select, .est-form textarea {
  width: 100%; padding: 9px 10px; border: 1px solid var(--est-border); border-radius: 7px;
  font-size: 14px; font-family: inherit; background: #fff; color: inherit;
}
.est-form textarea { min-height: 260px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; line-height: 1.6; }
.est-editor { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .est-editor { grid-template-columns: 1fr 1fr; } }
.est-preview { border: 1px solid var(--est-border); border-radius: 8px; padding: 14px; background: #fff; overflow-y: auto; max-height: 70vh; }

/* ---- Tabela do relatório ---- */
.est-tabela-wrap { overflow-x: auto; background: var(--est-card); border: 1px solid var(--est-border); border-radius: 10px; }
.est-tabela { width: 100%; border-collapse: collapse; font-size: 13px; }
.est-tabela th, .est-tabela td { padding: 9px 12px; border-bottom: 1px solid var(--est-border); text-align: left; white-space: nowrap; }
.est-tabela th { background: #f8fafc; color: var(--est-navy); font-weight: 600; }
.est-tabela td.centro { text-align: center; }