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

body {
  font-family: 'Inter', Arial, sans-serif;
  background-color: #f0f2f5;
  color: #333;
  line-height: 1.6;
}

/* -------- Header -------- */
header {
  background-color: #1e3a8a;
  color: white;
  text-align: center;
  padding: 20px 0;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
}

/* -------- Formulário -------- */
#formulario {
  max-width: 800px;
  margin: 30px auto;
  padding: 30px;
  background-color: #ffffff;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

fieldset {
  border: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

legend {
  font-size: 1.6rem;
  margin-bottom: 20px;
  font-weight: 700;
  color: #1e40af;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: #1f2937;
}

input, select {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-size: 1rem;
  background-color: #f9fafb;
  transition: all 0.3s ease-in-out;
}

input:focus, select:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 8px rgba(59,130,246,0.3);
  outline: none;
}

/* -------- Grupo de Taxa -------- */
.taxa-grupo {
  display: flex;
  align-items: center;
  width: 100%;
}

.taxa-grupo input {
  flex: 1;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-right: none;
  border-radius: 10px 0 0 10px;
  background-color: #f9fafb;
}

.taxa-grupo select {
  flex: 0 0 130px;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 0 10px 10px 0;
  background-color: #ffffff;
  font-size: 1rem;
  cursor: pointer;
}

/* Hover/focus para taxa-grupo */
.taxa-grupo input:focus,
.taxa-grupo select:focus,
.taxa-grupo input:hover,
.taxa-grupo select:hover {
  border-color: #3b82f6;
  box-shadow: 0 0 8px rgba(59,130,246,0.2);
  outline: none;
}

/* -------- Botão -------- */
form button {
  grid-column: 1 / -1;
  padding: 14px;
  font-size: 1.2rem;
  font-weight: 700;
  background-color: #3b82f6;
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

form button:hover {
  background-color: #2563eb;
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

/* -------- Gráfico -------- */
#grafico {
  max-width: 800px;
  margin: 30px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* -------- Resultados Finais -------- */
.resultados.finais {
  max-width: 800px;
  margin: 30px auto;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.resultados.finais p {
  font-size: 1.1rem;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
}

.resultados.finais span {
  font-weight: 600;
  color: #1e3a8a;
}

/* -------- Tabela -------- */
#tabela-resultados {
  max-width: 800px;
  margin: 30px auto;
  background-color: #fff;
  border-radius: 12px;
  overflow-x: auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 10px;
}

#tabela-resultados table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

#tabela-resultados th, #tabela-resultados td {
  padding: 12px 15px;
  text-align: center;
}

#tabela-resultados th {
  background-color: #3b82f6;
  color: white;
  font-weight: 600;
}

#tabela-resultados tbody tr:nth-child(even) {
  background-color: #f5f5f5;
}

#tabela-resultados tbody tr:hover {
  background-color: #e0e7ff;
}

/* -------- Footer -------- */
footer {
  background-color: #1e3a8a;
  color: white;
  text-align: center;
  padding: 20px 0;
  margin-top: 30px;
}

/* ----------------- ANÚNCIOS FIXOS ----------------- */
.ads-column.left,
.ads-column.right {
  position: fixed;
  top: 110px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 1000;
}

.ads-column.left {
  left: 0;
  width: 250px;
}

.ads-column.right {
  right: 0;
  width: 250px;
}

/* Ajusta margem do conteúdo para não sobrepor anúncios */
main {
  margin: 0 270px; /* 250px de anúncio + 20px de folga */
}

/* Card de anúncio */
.ad-250 {
  width: 100%;
  min-height: 150px;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #1f2937;
  padding: 10px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.ad-250:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* Rodapé horizontal */
.ads-horizontal {
  width: 100%;
  max-width: 900px;
  min-height: 125px;
  margin: 30px auto;
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #1f2937;
  padding: 10px;
}

/* ----------------- RESPONSIVIDADE ----------------- */
@media (max-width: 992px) {
  /* Esconde colunas laterais */
  .ads-column.left,
  .ads-column.right {
    display: none;
  }

  main {
    margin: 0 auto;
    max-width: 100%;
    padding: 20px;
  }

  /* Apenas o anúncio horizontal */
  .ads-horizontal {
    display: flex;
    max-width: 100%;
    margin: 20px auto;
  }
}

@media (max-width: 768px) {
  fieldset {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .taxa-grupo {
    flex-direction: column;
    gap: 10px;
  }

  .taxa-grupo select {
    flex: 1;
    border-radius: 0 0 8px 8px;
    border-top: none;
  }

  #graficoJuros {
    width: 100% !important;
    height: auto !important;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.4rem;
  }

  form button {
    font-size: 0.95rem;
    padding: 10px;
  }

  input, select {
    font-size: 0.95rem;
    padding: 8px;
  }

  #graficoJuros {
    height: 250px !important;
  }
}