/* Estilos específicos para Calculadora de Regra de Três e Porcentagens */

/* ==========================================================================
   Navegação por Abas
   ========================================================================== */

.tabs-container {
  display: flex;
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  border: 1px solid #333;
  border-radius: 12px;
  padding: 6px;
  margin-bottom: 30px;
  overflow-x: auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.tab-button {
  flex: 1;
  min-width: 140px;
  padding: 12px 16px;
  background: transparent;
  color: #a0a0a0;
  border: none;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.tab-button:hover {
  background: rgba(102, 126, 234, 0.1);
  color: #ffffff;
}

.tab-button.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ==========================================================================
   Seção da Calculadora
   ========================================================================== */

.calculator-section {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  border: 1px solid #333;
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.calculator-section h2 {
  color: #667eea;
  margin-bottom: 15px;
  font-size: 1.5rem;
  text-align: center;
}

.section-description {
  color: #a0a0a0;
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* ==========================================================================
   Regra de Três Visual
   ========================================================================== */

.regra-tres-visual {
  background: rgba(102, 126, 234, 0.05);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  padding: 30px;
  margin: 30px 0;
}

.proporcao {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
}

.proporcao-lado {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.proporcao-lado label {
  font-weight: 600;
  color: #667eea;
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.proporcao-lado input {
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #333;
  background: #1a1a1a;
  color: #ffffff;
  font-size: 1.1rem;
  text-align: center;
  transition: all 0.3s ease;
}

.proporcao-lado input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.proporcao-lado input.resultado {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-color: #667eea;
  font-weight: bold;
  color: #ffffff;
}

.proporcao-lado input.resultado::placeholder {
  color: #ffffff;
  opacity: 0.8;
}

.proporcao-separator {
  font-size: 0.9rem;
  color: #a0a0a0;
  text-align: center;
  font-style: italic;
  margin: 5px 0;
}

.proporcao-centro {
  display: flex;
  justify-content: center;
  align-items: center;
}

.equals {
  font-size: 2rem;
  font-weight: bold;
  color: #667eea;
  background: rgba(102, 126, 234, 0.1);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(102, 126, 234, 0.3);
}

/* ==========================================================================
   Cálculos de Porcentagem
   ========================================================================== */

.porcentagem-opcoes {
  display: grid;
  gap: 30px;
  margin: 30px 0;
}

.opcao-card {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  border: 1px solid #333;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.opcao-card h3 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: 1.3rem;
  text-align: center;
}

.input-group {
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #ffffff;
  font-size: 1rem;
}

.input-group input {
  width: 100%;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #333;
  background: #1a1a1a;
  color: #ffffff;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.input-group input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-with-toggle {
  display: flex;
  gap: 15px;
  align-items: flex-end;
}

.input-with-toggle input {
  flex: 1;
}

.toggle-buttons {
  display: flex;
  gap: 8px;
}

.toggle-btn {
  padding: 15px 20px;
  border: 1px solid #333;
  background: #1a1a1a;
  color: #a0a0a0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  font-weight: 500;
}

.toggle-btn:hover {
  border-color: #667eea;
  color: #ffffff;
}

.toggle-btn.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-color: #667eea;
  color: #ffffff;
}

.resultado-card {
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.3);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  margin-top: 20px;
}

.resultado-label {
  display: block;
  font-size: 0.9rem;
  color: #a0a0a0;
  margin-bottom: 10px;
}

.resultado-valor {
  font-size: 2rem;
  font-weight: bold;
  color: #667eea;
}

.resultado-detalhado {
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.3);
  border-radius: 12px;
  padding: 25px;
  margin-top: 20px;
}

.resultado-linha {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.resultado-linha:last-child {
  border-bottom: none;
}

.resultado-linha.total {
  font-weight: bold;
  font-size: 1.2rem;
  color: #667eea;
  border-top: 2px solid rgba(102, 126, 234, 0.3);
  margin-top: 10px;
  padding-top: 15px;
}

/* ==========================================================================
   Que % é de
   ========================================================================== */

.proporcao-calc {
  margin: 30px 0;
}

.input-group-horizontal {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  background: rgba(102, 126, 234, 0.05);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  padding: 30px;
  margin-bottom: 30px;
}

.input-group-horizontal .input-group {
  margin-bottom: 0;
  flex: 1;
}

.operador {
  color: #667eea;
  font-weight: bold;
  font-size: 1.1rem;
  white-space: nowrap;
  background: rgba(102, 126, 234, 0.1);
  padding: 15px 20px;
  border-radius: 8px;
  border: 1px solid rgba(102, 126, 234, 0.3);
  margin-bottom: 0;
  align-self: flex-end;
  height: fit-content;
}

.resultado-proporcao {
  text-align: center;
  margin: 30px 0;
}

.resultado-principal {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 16px;
  padding: 40px;
  margin-bottom: 20px;
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

.resultado-principal span {
  font-size: 3.5rem;
  font-weight: bold;
  color: #ffffff;
  display: block;
}

.resultado-explicacao {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.2rem;
  margin-top: 15px;
  font-style: italic;
}

.exemplos-praticos {
  background: rgba(102, 126, 234, 0.05);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  padding: 25px;
  margin-top: 30px;
}

.exemplos-praticos h3 {
  color: #667eea;
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.exemplos-praticos ul {
  list-style: none;
  padding: 0;
}

.exemplos-praticos li {
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #e0e0e0;
  line-height: 1.6;
}

.exemplos-praticos li:last-child {
  border-bottom: none;
}

.exemplos-praticos strong {
  color: #667eea;
}

/* ==========================================================================
   Seção de Informações
   ========================================================================== */

.calculation-info {
  background: rgba(102, 126, 234, 0.05);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  padding: 25px;
  margin-top: 30px;
}

.calculation-info h3 {
  color: #667eea;
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.calculation-info p {
  color: #e0e0e0;
  margin-bottom: 15px;
  line-height: 1.6;
}

.formula {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 20px;
  font-family: 'Courier New', monospace;
  border-left: 4px solid #667eea;
  margin-top: 15px;
}

.formula strong {
  color: #667eea;
}

/* ==========================================================================
   Responsividade
   ========================================================================== */

@media (max-width: 768px) {
  .tabs-container {
    margin: 0 -1rem 30px;
    border-radius: 0;
  }

  .calculator-section {
    padding: 20px;
  }

  .proporcao {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }

  .proporcao-centro {
    order: 2;
  }

  .equals {
    transform: rotate(90deg);
  }

  .input-group-horizontal {
    flex-direction: column;
    gap: 15px;
    padding: 20px;
  }

  .input-with-toggle {
    flex-direction: column;
    align-items: stretch;
  }

  .toggle-buttons {
    justify-content: center;
  }

  .resultado-principal span {
    font-size: 2.5rem;
  }

  .operador {
    order: 2;
    margin: 15px 0;
  }
}

@media (max-width: 480px) {
  .regra-tres-visual,
  .opcao-card,
  .input-group-horizontal {
    padding: 20px;
  }

  .tab-button {
    min-width: 120px;
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .resultado-principal {
    padding: 30px;
  }

  .resultado-principal span {
    font-size: 2rem;
  }
}