:root {
  --azul-marinho: #0f2942;
  --azul-acento: #1f5fa8;
  --accent: #d97706;
  --accent-hover: #b45f04;
  --fundo: #f2f4f7;
  --texto: #1c2733;
  --texto-suave: #5b6b7c;
  --borda: #dbe1e8;
  --branco: #ffffff;
  --erro: #b3261e;
  --erro-fundo: #fdecea;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--fundo);
  color: var(--texto);
}

.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--azul-marinho);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
}

.marca {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 16px;
}

.marca-sigla {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--branco);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.marca-nome { font-size: 14px; font-weight: 600; line-height: 1.25; color: var(--branco); }

.nav { display: flex; flex-direction: column; gap: 2px; padding: 0 12px; flex: 1; }

.nav-item {
  padding: 10px 12px;
  border-radius: 6px;
  color: #b9cbdd;
  text-decoration: none;
  font-size: 14px;
}

.nav-item:hover { background: rgba(255,255,255,0.06); color: var(--branco); }
.nav-item.ativo { background: var(--azul-acento); color: var(--branco); font-weight: 600; }

.rodape {
  padding: 16px 20px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.rodape-usuario { color: #b9cbdd; }
.rodape-sair { color: var(--accent); text-decoration: none; font-weight: 600; }
.rodape-sair:hover { text-decoration: underline; }

.conteudo { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topo { padding: 28px 40px 0; }
.topo h1 { font-size: 20px; margin: 0; color: var(--texto); }
.corpo { padding: 20px 40px 40px; max-width: 720px; }
.descricao { color: var(--texto-suave); font-size: 14px; line-height: 1.5; }

.formulario {
  background: var(--branco);
  border: 1px solid var(--borda);
  border-radius: 8px;
  padding: 24px;
  margin-top: 16px;
}

.formulario-linha { display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.campo { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.formulario-linha .campo { margin-bottom: 0; }
.campo label { font-size: 13px; font-weight: 600; color: var(--texto); }

.campo input {
  border: 1px solid var(--borda);
  border-radius: 6px;
  padding: 9px 10px;
  font-size: 14px;
  font-family: inherit;
}

.campo input:focus { outline: 2px solid var(--azul-acento); outline-offset: 1px; }

.botao-primario {
  background: var(--accent);
  color: var(--branco);
  border: none;
  border-radius: 6px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.botao-primario:hover { background: var(--accent-hover); }
.botao-largo { width: 100%; }

.botao-perigo {
  background: transparent;
  color: var(--erro);
  border: 1px solid var(--erro);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.botao-perigo:hover { background: var(--erro-fundo); }

.tabela {
  width: 100%;
  border-collapse: collapse;
  background: var(--branco);
  border: 1px solid var(--borda);
  border-radius: 8px;
  overflow: hidden;
  margin-top: 16px;
  font-size: 14px;
}

.tabela th, .tabela td { text-align: left; padding: 10px 16px; border-bottom: 1px solid var(--borda); }
.tabela th { background: #f8f9fb; color: var(--texto-suave); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.tabela tr:last-child td { border-bottom: none; }

.subtitulo { font-size: 15px; margin: 32px 0 0; }

.mensagem-erro {
  background: var(--erro-fundo);
  color: var(--erro);
  border: 1px solid #f3c1bc;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
}

.pagina-login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--azul-marinho);
}

.cartao-login {
  background: var(--branco);
  border-radius: 10px;
  padding: 36px;
  width: 320px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.25);
}

.marca-login { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.marca-login .marca-nome { color: var(--texto); }

@media (max-width: 640px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; align-items: center; padding: 12px 16px; }
  .marca { border-bottom: none; margin-bottom: 0; padding: 0; }
  .marca-nome br { display: none; }
  .nav { flex-direction: row; padding: 0 0 0 16px; }
  .rodape { display: none; }
  .topo, .corpo { padding-left: 20px; padding-right: 20px; }
}