/* ============================================================
   Amigo Eletricista - Estilo das Páginas de Cálculos
   Calculadoras online
   Versão: 2.0
   ============================================================ */

/* ============================================================
   1. ESTRUTURA GERAL
   ============================================================ */
body {
  padding-top: 64px;
  background: var(--cinza-claro);
  min-height: 100vh;
}

/* ============================================================
   2. NAVEGAÇÃO RÁPIDA ENTRE CALCULADORAS
   ============================================================ */
.nav-calculadoras {
  position: sticky;
  top: 64px;
  z-index: 100;
  background: var(--azul-escuro);
  border-bottom: 3px solid var(--laranja);
  box-shadow: var(--shadow-md);
  padding: 0;
}

.nav-calc-lista {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-calc-lista::-webkit-scrollbar {
  display: none;
}

.nav-calc-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--branco);
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.nav-calc-item:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--amarelo);
  border-color: rgba(255, 222, 89, 0.3);
}

.nav-calc-item.nav-calc-ativo {
  background: var(--laranja);
  color: var(--branco);
  border-color: var(--laranja);
}

.nav-calc-item.nav-calc-ativo:hover {
  background: #e66a17;
  color: var(--branco);
}

/* ============================================================
   3. ESTRUTURA GERAL DAS CALCULADORAS
   ============================================================ */
.geral-calculadora {
  max-width: var(--max-width);
  margin: var(--spacing-lg) auto;
  padding: 0 var(--spacing-md);
}

/* ============================================================
   4. TÍTULO / ACCORDION HEADER
   ============================================================ */
.titulo-calculadora {
  background: linear-gradient(135deg, var(--azul-medio) 0%, var(--azul-escuro) 100%);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-mostrar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--branco);
  text-align: left;
  transition: all var(--transition-fast);
}

.btn-mostrar:hover {
  background: rgba(255, 255, 255, 0.08);
  padding-left: calc(var(--spacing-lg) + 8px);
}

/* ============================================================
   5. DESCRIÇÃO
   ============================================================ */
.descricao {
  background: var(--branco);
  border-left: 4px solid var(--laranja);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.descricao p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--texto-claro);
}

/* ============================================================
   6. QUADRO / CARD PRINCIPAL
   ============================================================ */
.quadro {
  background: var(--azul-escuro);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.quadro-header {
  background: rgba(0, 0, 0, 0.2);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.quadro-dados {
  padding: var(--spacing-lg);
}

/* ============================================================
   7. FORMULÁRIO
   ============================================================ */
.formulario {
  width: 100%;
}

.basico-avancado {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.basico,
.avancado {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

/* Labels */
.formulario label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.formulario label p {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--amarelo);
  margin: 0;
}

/* Inputs e Selects */
.formulario input[type="number"],
.formulario input[type="text"],
.formulario select {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--branco);
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  -moz-appearance: textfield;
}

.formulario input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.formulario input::-webkit-outer-spin-button,
.formulario input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.formulario input:hover,
.formulario select:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(0, 0, 0, 0.4);
}

.formulario input:focus,
.formulario select:focus {
  outline: none;
  border-color: var(--laranja);
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0 0 0 3px rgba(255, 117, 31, 0.25);
}

.formulario select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.formulario select option {
  background: var(--azul-escuro);
  color: var(--branco);
}

/* ============================================================
   8. BOTÃO CALCULAR
   ============================================================ */
.btn-calcular {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  width: 100%;
  max-width: 300px;
  margin: var(--spacing-md) auto 0;
  padding: 16px 32px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--branco);
  background: linear-gradient(135deg, var(--laranja) 0%, #e66a17 100%);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(255, 117, 31, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-calcular:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 117, 31, 0.5);
}

.btn-calcular:active {
  transform: translateY(0);
}

/* ============================================================
   9. QUADRO DE RESPOSTAS / TABELA
   ============================================================ */
.quadro-respostas {
  margin-top: var(--spacing-lg);
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.quadro-respostas table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.quadro-respostas caption {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--amarelo);
  padding: var(--spacing-md);
  text-align: left;
  background: rgba(0, 0, 0, 0.2);
}

.quadro-respostas thead {
  background: var(--azul-escuro);
}

.quadro-respostas th {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--branco);
  padding: 14px 16px;
  text-align: left;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.quadro-respostas td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--branco);
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.quadro-respostas tbody tr {
  transition: background var(--transition-fast);
}

.quadro-respostas tbody tr:hover {
  background: rgba(255, 117, 31, 0.1);
}

.quadro-respostas tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.03);
}

.quadro-respostas tbody tr:nth-child(even):hover {
  background: rgba(255, 117, 31, 0.1);
}

/* ============================================================
   10. LISTA DE RESULTADOS
   ============================================================ */
.ul-lista {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}

.ul-lista li {
  background: rgba(255, 117, 31, 0.15);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--amarelo);
  border: 1px solid rgba(255, 117, 31, 0.3);
}

/* ============================================================
   11. SEÇÕES NÍVEIS (Básico/Avançado)
   ============================================================ */
.btn-niveis {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--cinza-medio);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-niveis:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--branco);
}

.btn-niveis.active {
  background: var(--laranja);
  color: var(--branco);
}

/* ============================================================
   12. MENSAGENS DE ERRO / SUCESSO
   ============================================================ */
.mensagem-erro {
  background: rgba(229, 62, 62, 0.15);
  border-left: 4px solid var(--erro);
  color: #fc8181;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: var(--spacing-sm);
}

.mensagem-sucesso {
  background: rgba(56, 161, 105, 0.15);
  border-left: 4px solid var(--sucesso);
  color: #68d391;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: var(--spacing-sm);
}

/* ============================================================
   13. RESPONSIVO - CALCULADORAS
   ============================================================ */
@media (max-width: 768px) {
  .nav-calculadoras {
    display: none;
  }

  .nav-calc-lista {
    padding: var(--spacing-xs) 0;
    gap: var(--spacing-xs);
  }

  .nav-calc-item {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  .geral-calculadora {
    margin: var(--spacing-sm) auto;
    padding: 0 var(--spacing-sm);
  }

  .btn-mostrar {
    font-size: 1.0625rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .basico-avancado {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .quadro-dados {
    padding: var(--spacing-md);
  }

  .descricao {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .descricao p {
    font-size: 0.875rem;
  }

  .btn-calcular {
    max-width: 100%;
  }

  .quadro-respostas th,
  .quadro-respostas td {
    padding: 10px 12px;
    font-size: 0.8125rem;
  }

  .ul-lista {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .ul-lista li {
    font-size: 0.8125rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .nav-calc-item {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  .titulo-calculadora {
    border-radius: var(--radius-sm);
  }

  .btn-mostrar {
    font-size: 1rem;
  }

  .formulario input[type="number"],
  .formulario input[type="text"],
  .formulario select {
    font-size: 16px;
    padding: 12px 14px;
  }
}