*{
  box-sizing:border-box;
}

:root {
  --petroleo: #34495e;
  --petroleo-dark: #2c3e50;
  --verde: #1abc9c;
  --cinza-claro: #f4f4f4;
}

body {
  font-family: 'Open Sans', sans-serif;
  background-color: var(--cinza-claro);
  margin: 0;
}

header {
  background-color: var(--petroleo-dark);
  color: white;
  padding: 20px 10px;
  text-align: center;
}

.header-top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.header-top h1 {
  grid-column: 2;
  justify-self: center;
  margin: 0;
}

.language-selector {
  grid-column: 3;
  justify-self: end;
  display: flex;
  gap: 0.5rem;
}

h1, h2, h3 {
  margin-bottom: 1rem;
  font-family: 'Montserrat', sans-serif;
}

nav {
  background-color: var(--petroleo);
}

.nav-button {
  color: white;
  padding: 15px 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 16px;
}

.nav-button:hover,
.nav-button.active {
  background-color: var(--verde);
}

.dropdown-menu {
  background-color: var(--petroleo);
  border: none;
}

.dropdown-item {
  color: white;
  padding: 12px 20px;
}

.dropdown-item:hover,
.dropdown-item.active {
  background-color: var(--verde);
  color: white;
}

.tab-content {
  display: none;
  padding: 40px 20px;
  text-align: justify;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

.sub-bullet {
  margin-left: 20px;
  list-style-type: circle;
}

.sub-bullet li {
  margin-bottom: 6px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

th, td {
  border: 1px solid #ccc;
  padding: 10px;
  vertical-align: middle;
}

th {
  background-color: #ecf0f1;
  text-align: center;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.download-btn {
  background-color: var(--petroleo);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  margin-top: 20px;
  cursor: pointer;
}

.download-btn:hover {
  background-color: var(--petroleo-dark);
}

.language-selector a {
  font-size: 1.2rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s ease-in-out;
}

.language-selector a:hover {
  transform: scale(1.1);
  text-decoration: none;
}

main{
  max-width:1200px;
  margin:0 auto;
  padding:40px 20px;
}

.simple-page main{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:60vh;
}

@media (max-width: 600px) {
  .header-top {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 8px;
  }

  .language-selector {
    grid-column: 1;
    justify-self: center;
    order: -1;   /* sobe acima do h1 */
  }

  .header-top h1 {
    grid-column: 1;
  }
}

footer {
  background-color: var(--petroleo-dark);
  color: white;
  padding: 10px 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  font-size: 0.9em;
}

.copyright {
  grid-column: 2;
  justify-self: center;
  white-space: nowrap;
}

.language {
  grid-column: 3;
  justify-self: end;
  white-space: nowrap;
}

@media (max-width: 600px) {
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 6px;
  }

  .copyright,
  .language {
    grid-column: 1;
    justify-self: center;
    white-space: normal;
  }
}

.contact-intro {
  width: 100%;
  margin-bottom: 20px;
  line-height: 1.7;
}

.contact-links {
  margin-bottom: 10px;
}

.contact-links p {
  margin-bottom: 10px;
}

.contact-links i {
  color: var(--petroleo-dark);
  margin-right: 8px;
  width: 20px;
  text-align: center;
}

.contact-form {
  max-width: 760px;
  margin: 40px auto;
  background-color: #ffffff;
  padding: 24px;
  border: 1px solid #dfe6e9;
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.05);
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 18px;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--petroleo-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: 'Open Sans', sans-serif;
  font-size: 15px;
  color: #2d3436;
  background-color: #fff;
  border: 1px solid #cfd8dc;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--verde);
  box-shadow: 0 0 0 3px rgba(26, 188, 156, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-button {
  background-color: var(--petroleo);
  color: white;
  border: none;
  padding: 12px 22px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.contact-button:hover {
  background-color: var(--petroleo-dark);
  transform: translateY(-1px);
}

.contact-button:active {
  transform: translateY(0);
}

.contact-actions{
  display:flex;
  justify-content:flex-end;
}

.thanks-card {
  width: 100%;
  max-width: 760px;
  background-color: var(--branco);
  border-radius: 14px;
  padding: 40px 32px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.success-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background-color: rgba(26, 188, 156, 0.14);
  color: var(--verde);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.thanks-card h2 {
  margin: 0 0 16px;
  font-family: 'Montserrat', sans-serif;
  font-size: 2rem;
  color: var(--petroleo-dark);
}

.thanks-card p {
  margin: 0 auto 14px;
  max-width: 560px;
  line-height: 1.8;
  font-size: 1rem;
}

.thanks-actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 8px;
  padding: 12px 22px;
  font-weight: 600;
  transition: 0.2s ease;
}

.btn-primary {
  background-color: var(--petroleo);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--petroleo-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--petroleo-dark);
  border: 1px solid #cfd8dc;
}

.btn-secondary:hover {
  background-color: #eef2f3;
}

@media (max-width: 600px) {
  .contact-form {
    padding: 18px;
  }

  .contact-button {
    width: 100%;
  }

  .thanks-card {
    padding: 28px 20px;
  }

  .thanks-card h2 {
    font-size: 1.55rem;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}