/* === Tipografia e Legibilidade === */
body {
  font-family: 'Segoe UI', 'Roboto', sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: #2c3e50;
  background: linear-gradient(to bottom, #f9f9f9, #eef2f5);
  margin: 0;
  padding: 0;
  transition: background 0.3s ease;
}

/* === Layout Centralizado === */
main, article, .content {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

/* === Títulos com Elegância === */
h1, h2, h3 {
  color: #1a1a1a;
  margin-top: 40px;
  margin-bottom: 20px;
  font-weight: 600;
  position: relative;
}
h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: #3498db;
  margin-top: 10px;
  border-radius: 2px;
}

/* === Links com efeito suave === */
a {
  color: #2980b9;
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: #1c5980;
  text-decoration: underline;
}

/* === Navegação === */
nav {
  background-color: #ffffff;
  border-bottom: 1px solid #ddd;
  padding: 10px 20px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
nav a {
  margin-right: 15px;
  color: #555;
}
nav a:hover {
  color: #000;
}

/* === Blocos de Destaque com leve animação === */
blockquote, .highlight {
  background-color: #eef6ff;
  border-left: 4px solid #3498db;
  padding: 15px 25px;
  margin: 30px 0;
  font-style: italic;
  font-size: 0.875em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease;
}
blockquote:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

/* === Listas com espaçamento elegante === */
ul, ol {
  padding-left: 25px;
  margin-bottom: 20px;
}
li {
  margin-bottom: 10px;
}


/* Estilos para a tabela responsiva */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin: 30px 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    border-radius: 6px;
}

.responsive-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px; /* Largura mínima antes de ativar a rolagem horizontal */
}

.responsive-table caption {
    font-size: 1.1em;
    font-weight: 600;
    text-align: left;
    margin-bottom: 10px;
    color: #2c3e50;
}

.responsive-table th,
.responsive-table td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

.responsive-table th {
    background-color: #eaeaea;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.responsive-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.responsive-table tr:hover {
    background-color: #f0f7ff;
}

.responsive-table a {
    color: #2980b9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.responsive-table a:hover {
    color: #1c5980;
    text-decoration: underline;
}

/* Colunas específicas com largura otimizada */
.year-col, .access-col, .citations-col {
    width: 80px;
}

.citations-col {
    text-align: center;
}

.table-footnotes {
    font-size: 0.9em;
    color: #666;
    margin-top: 10px;
    padding: 10px;
    border-top: 1px dashed #ddd;
   line-height: 1.4;      /* harmoniza leitura */

}

.table-footnotes p {
  font-size: inherit;    /* força herdar do contêiner */
  margin: 0;             /* evita espaçamento que parece “maior” */
}

/* Estilos para dispositivos móveis */
@media screen and (max-width: 768px) {
    .table-responsive {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .responsive-table {
        min-width: 100%;
    }
    
    .responsive-table thead {
        display: none; /* Oculta cabeçalho em telas pequenas */
    }
    
    .responsive-table tr {
        display: block;
        margin-bottom: 15px;
        border: 1px solid #ddd;
        border-radius: 6px;
        padding: 10px;
    }
    
    .responsive-table td {
        display: block;
        text-align: left;
        border: none;
        padding: 8px 10px;
        position: relative;
        padding-left: 50%;
    }
    
    .responsive-table td:before {
        content: attr(data-label);
        position: absolute;
        left: 10px;
        width: 45%;
        font-weight: 600;
        color: #2c3e50;
    }
    
    .responsive-table td:not(:last-child) {
        border-bottom: 1px dashed #eee;
    }
    
    /* Ajustes para colunas específicas em mobile */
    .year-col, .access-col, .citations-col {
        width: auto;
    }
    
    .citations-col {
        text-align: left;
    }
}

/* Estilos adicionais para o conteúdo de impacto */
.impact-content {
    font-size: 0.9em;
    line-height: 1.5;
}

.semantic-scholar-info {
    background-color: #f0f7ff;
    border-left: 3px solid #3498db;
    padding: 8px 12px;
    margin-top: 10px;
    font-size: 0.85em;
    border-radius: 0 4px 4px 0;
}

.semantic-scholar-info strong {
    color: #2c3e50;
}

/* Ajustes para mobile */
@media screen and (max-width: 768px) {
    .semantic-scholar-info {
        margin: 8px 0;
        padding: 6px 10px;
    }
    
    .impact-content p {
        margin-bottom: 8px;
    }
}

/* === Tabelas com estilo limpo === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
th, td {
  border: 1px solid #ccc;
  padding: 12px;
  text-align: left;
}
th {
  background-color: #eaeaea;
  font-weight: 600;
}

/* === Imagens centralizadas e suaves === */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

/* === Seções com respiro e destaque === */
section {
  margin-bottom: 50px;
  padding: 30px 40px;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: box-shadow 0.3s ease;
}
section:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* === Rodapé elegante === */
footer {
  text-align: center;
  font-size: 14px;
  color: #777;
  padding: 20px;
  border-top: 1px solid #ddd;
  margin-top: 60px;
  background-color: #f0f0f0;
}

.indice {
  margin: 40px 0;
  padding: 0;
  margin-left: 40px; /* recuo à esquerda */
}
.indice h2 {
  font-size: 22px;
  margin-bottom: 15px;
  color: #2c3e50;
}
.indice ul {
  list-style: none;
  padding-left: 0;
}
.indice li {
  margin-bottom: 10px;
}
.indice a {
  font-size: 18px;
  color: #2980b9;
  text-decoration: none;
  padding-left: 18px;
  position: relative;
}
.indice a::before {
  content: "➤";
  position: absolute;
  left: 0;
  color: #3498db;
  font-size: 14px;
}
.indice a:hover {
  text-decoration: underline;
  color: #1c5980;
}

.nota {
  float: right;
  width: 30%;
  background: #eef6ff;
  border: 1px solid #cce0ff;
  padding: 8px;
  margin: 0 0 1em 1em;
  font-size: 0.9em;
}

/* em telas menores: empilhar no fluxo do texto */
@media (max-width: 768px) {
  .nota {
    float: none;          /* remove o alinhamento lateral */
    width: 100%;          /* ocupa toda a largura */
    margin: 1em 0;        /* espaçamento acima/abaixo */
    padding: 0.5em 1em;   /* respiro interno */
    background: #eef6ff;  /* destaque leve */
    border-left: 3px solid #ccc; /* marcador visual */
  }
}

figure {
  text-align: center;       /* Centraliza imagem e legenda */
  margin: 20px auto;        /* Espaçamento e centralização */
  max-width: 80%;           /* Ajusta largura máxima */
}

figure img {
  max-width: 100%;          /* Imagem responsiva */
  height: auto;             /* Mantém proporção */
  border-radius: 8px;       /* Bordas arredondadas (opcional) */
}

figcaption {
  font-size: 0.9em;         /* Texto um pouco menor */
  color: #555;              /* Cor mais suave */
  margin-top: 8px;          /* Espaço entre imagem e legenda */
  font-style: italic;       /* Destaque sutil */
}

/* Estilo para notas em rodapé */
.footnotes {
      font-size: 0.85em;
      color: #444;
      border-top: 1px dashed #ccc;
      padding-top: 0.5em;
}

.footnotes li {
      margin-bottom: 0.3em;
 }

/* Estilos para a classe de fechamento/conclusão do artigo */
.closing {
    /* margem superior, zerando laterais e inferior */
    margin: 2rem 0 0; 
    
    /* preenchimento interno */
    padding: 1.25rem 1.5rem; 
    
    /* bordas superior e inferior */
    border-top: 2px solid #222; 
    border-bottom: 2px solid #222; 
    
    /* tipografia */
    font-size: 1.15rem; 
    line-height: 1.75; 
    letter-spacing: 0.2px;
}