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

body {
  font-family: 'Georgia', 'Times New Roman', serif;
  background: #fefaf5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Cabeçalho */
.header {
  text-align: center;
  padding: 20px;
  background: #2c2418;
  color: #f0e6d8;
  border-bottom: 3px solid #b59a6b;
}

.symbol {
  font-size: 48px;
  display: inline-block;
  transform: scaleY(-1);
  filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.3));
}

h1 {
  font-size: 1.8rem;
  letter-spacing: 3px;
  margin-top: 8px;
}

.tagline {
  font-size: 0.85rem;
  font-style: italic;
  color: #c4b59a;
  margin-top: 5px;
}

/* Darwin Digital */
.darwin-digital {
  background: #fff9f0;
  margin: 20px;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-left: 6px solid #b59a6b;
}

.darwin-digital h2 {
  color: #2c2418;
  font-size: 1.3rem;
  margin-bottom: 15px;
  border-bottom: 2px solid #e0d5c0;
  padding-bottom: 8px;
}

.raiz-lista {
  list-style: none;
  margin: 15px 0;
}

.raiz-lista li {
  padding: 12px 0;
  border-bottom: 1px dashed #e0d5c0;
}

.raiz-lista strong {
  color: #8b5e3c;
  font-size: 1.1rem;
}

.porcentagem {
  display: inline-block;
  background: #2c2418;
  color: #f0e6d8;
  font-size: 0.7rem;
  padding: 2px 10px;
  border-radius: 20px;
  margin-left: 10px;
}

.descricao {
  font-size: 0.85rem;
  color: #555;
  display: block;
  margin-top: 5px;
}

.button-group {
  display: flex;
  gap: 12px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  border: none;
  padding: 10px 24px;
  border-radius: 30px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.btn-primary {
  background: #b59a6b;
  color: white;
}

.btn-primary:hover {
  background: #8b5e3c;
}

.btn-secondary {
  background: #e0d5c0;
  color: #2c2418;
}

.btn-secondary:hover {
  background: #c4b59a;
}

.aviso {
  font-size: 0.7rem;
  color: #999;
  margin-top: 18px;
  font-style: italic;
}

/* Seletor de idioma */
.selector {
  text-align: center;
  padding: 12px;
  background: #e8dfd0;
  margin: 0 20px;
  border-radius: 50px;
}

.lang-btn {
  background: #2c2418;
  color: white;
  border: none;
  padding: 6px 18px;
  margin: 0 5px;
  border-radius: 30px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.8rem;
}

.lang-btn:hover {
  background: #5a4a3a;
}

/* Iframe */
.wiki-frame {
  flex: 1;
  margin: 20px;
  border: 1px solid #ccc;
  border-radius: 8px;
  overflow: hidden;
  background: white;
  min-height: 400px;
}

iframe {
  width: 100%;
  height: 100%;
  border: none;
  min-height: 400px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: #fff9f0;
  max-width: 500px;
  width: 90%;
  padding: 25px;
  border-radius: 16px;
  border-left: 6px solid #b59a6b;
  max-height: 80%;
  overflow-y: auto;
}

.modal-content h3 {
  color: #2c2418;
  margin-bottom: 15px;
}

.modal-content ul {
  margin: 15px 0;
  padding-left: 20px;
}

.modal-content li {
  margin: 10px 0;
}

.close-modal {
  float: right;
  font-size: 28px;
  cursor: pointer;
  color: #999;
}

.close-modal:hover {
  color: #333;
}

/* Responsivo */
@media (max-width: 768px) {
  h1 { font-size: 1.3rem; }
  .symbol { font-size: 36px; }
  .darwin-digital { margin: 15px; padding: 18px; }
  .button-group { flex-direction: column; }
  .btn-primary, .btn-secondary { text-align: center; }
  .selector { margin: 0 15px; }
  .wiki-frame { margin: 15px; min-height: 350px; }
}

@media (max-width: 480px) {
  .lang-btn { padding: 4px 12px; font-size: 0.7rem; }
  .raiz-lista li { padding: 8px 0; }
}