/* 
 * vidatransparente.com.br - Sistema de Design "Livro Aberto"
 * Estilo clássico inspirado em páginas de papel pólen com tipografia elegante e moderna.
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

:root {
  /* Cores do Tema */
  --bg-book: #fdfbf7;
  --bg-table: #f9f6f0;
  --color-text: #2d2a29;
  --color-text-muted: #5e5a58;
  --color-primary: #8b1e3f; /* Vinho Elegante */
  --color-primary-hover: #b22d56;
  --color-accent: #c49b5c; /* Sépia / Ouro */
  --color-border: #e7e2d7;
  --color-shadow: rgba(45, 42, 41, 0.08);
  --color-shadow-deep: rgba(45, 42, 41, 0.15);
  
  /* Fontes */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Espaçamento e Transições */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: all 0.15s ease;
}

/* Reset Geral & Acessibilidade */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: #f3efe6; /* Fundo sutil atrás do livro */
  background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 24px 24px;
  line-height: 1.6;
  min-block-size: 100dvb;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-block: var(--spacing-md);
  padding-inline: var(--spacing-sm);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Personalizada */
::-webkit-scrollbar {
  inline-size: 10px;
}
::-webkit-scrollbar-track {
  background: #f3efe6;
}
::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 5px;
  border: 2px solid #f3efe6;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Tipografia Avançada */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-weight: 700;
  text-wrap: balance; /* Baseline 2024 */
  line-height: 1.25;
  margin-block-end: var(--spacing-sm);
}

p, li, blockquote {
  text-wrap: pretty; /* Chrome/Safari 2025/2026 */
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-primary);
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  border-bottom: 1px solid var(--color-primary-hover);
}

/* Estrutura do Layout "Livro Aberto" */
.book-container {
  inline-size: 100%;
  max-inline-size: 1100px;
  background-color: var(--bg-book);
  border-radius: 12px;
  box-shadow: 0 15px 35px var(--color-shadow), 0 5px 15px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--color-border);
  min-block-size: calc(100dvb - 2 * var(--spacing-md));
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
  position: relative;
}

/* Divisória central simulando a dobra do livro (somente em telas grandes) */
@media (min-width: 900px) {
  .book-container::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    background: linear-gradient(to right, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.12) 50%, rgba(0,0,0,0.05) 100%);
    pointer-events: none;
    z-index: 10;
  }
}

/* Cabeçalho do Livro (Header) */
.book-header {
  padding-block: var(--spacing-md);
  padding-inline: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
  background-color: var(--bg-book);
  z-index: 15;
}

.logo-link {
  border-bottom: none;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-text span {
  color: var(--color-accent);
}

/* Menu de Navegação */
.nav-menu {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  padding-block: 4px;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
}

/* Conteúdo Principal (Duas Páginas / Grid) */
.book-body {
  display: grid;
  grid-template-columns: 1fr;
  padding: var(--spacing-lg);
  gap: var(--spacing-lg);
  background-color: var(--bg-book);
}

@media (min-width: 900px) {
  .book-body {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    padding-inline: var(--spacing-xl);
  }
}

/* Páginas Individuais (Esquerda / Direita) */
.book-page {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-page.left {
  border-right: none;
}

@media (min-width: 900px) {
  .book-page.left {
    padding-inline-end: var(--spacing-sm);
  }
  .book-page.right {
    padding-inline-start: var(--spacing-sm);
  }
}

/* Seção Hero / Capa Interna */
.hero-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  min-block-size: 300px;
}

.hero-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  font-weight: 600;
  margin-block-end: var(--spacing-xs);
}

.hero-title {
  font-size: clamp(2rem, 5cqi, 3.2rem);
  line-height: 1.1;
  color: var(--color-primary);
  margin-block-end: var(--spacing-md);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-text-muted);
  margin-block-end: var(--spacing-md);
}

/* Ilustrações de Capa e Poema */
.illustration-container {
  inline-size: 100%;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 20px var(--color-shadow);
  border: 1px solid var(--color-border);
  aspect-ratio: 3 / 2;
  position: relative;
  background-color: var(--bg-table);
}

.illustration-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.illustration-container:hover .illustration-img {
  transform: scale(1.03);
}

/* Caixa de Busca Elegante */
.search-wrapper {
  inline-size: 100%;
  position: relative;
  margin-block-end: var(--spacing-md);
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  padding-inline-end: 45px;
  font-family: var(--font-sans);
  font-size: 1rem;
  background-color: var(--bg-table);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  outline: none;
  transition: var(--transition-smooth);
}

.search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(196, 155, 92, 0.15);
  background-color: var(--bg-book);
}

.search-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  pointer-events: none;
}

/* Grid de Poemas (Catálogo) */
.poems-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 600px) {
  .poems-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

.poem-card {
  background-color: var(--bg-table);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-block-size: 180px;
  cursor: pointer;
  position: relative;
}

.poem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--color-accent);
  border-radius: 8px 8px 0 0;
  opacity: 0;
  transition: var(--transition-fast);
}

.poem-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px var(--color-shadow);
  border-color: var(--color-accent);
  background-color: var(--bg-book);
}

.poem-card:hover::before {
  opacity: 1;
}

.card-title {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-block-end: var(--spacing-xs);
}

.card-excerpt {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-muted);
  margin-block-end: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-clamp: 3;
  overflow: clip;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 500;
  text-transform: uppercase;
}

/* Poemas Individuais (Layout de Leitura) */
.poem-view {
  margin-block-start: var(--spacing-sm);
}

.poem-title {
  font-size: 2.2rem;
  text-align: center;
  margin-block-end: var(--spacing-xs);
}

.poem-author {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  text-align: center;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
  margin-block-end: var(--spacing-lg);
}

.poem-verses {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.8;
  white-space: pre-wrap; /* Preserva quebras de linha de poesia */
  text-align: center;
  margin-inline: auto;
  max-inline-size: 450px;
  color: var(--color-text);
  padding-block: var(--spacing-md);
  border-block: 1px double var(--color-border);
  background-image: linear-gradient(var(--bg-table) 1px, transparent 1px);
  background-size: 100% 3.6em; /* Efeito suave de pauta */
}

/* Destacar o verso alvo da UFJF no Dueto da Noite */
.highlighted-verse {
  background-color: rgba(196, 155, 92, 0.12);
  border-inline-start: 3px solid var(--color-accent);
  padding-inline: var(--spacing-sm);
  margin-inline: -12px;
  font-weight: 600;
}

/* Seção de Links Semânticos (SEO) */
.seo-notes {
  background-color: var(--bg-table);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  margin-block-start: var(--spacing-lg);
}

.seo-notes h3 {
  font-size: 1.1rem;
  margin-block-end: var(--spacing-xs);
}

.seo-notes p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Rodapé do Livro (Footer) */
.book-footer {
  padding-block: var(--spacing-md);
  padding-inline: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background-color: var(--bg-book);
  z-index: 15;
}

.footer-nav {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--color-text-muted);
  border-bottom: none;
}

.footer-link:hover {
  color: var(--color-primary);
}

/* Páginas Especiais (História da Poesia) */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  position: relative;
  padding-inline-start: var(--spacing-md);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background-color: var(--color-accent);
}

.timeline-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 2px solid var(--bg-book);
}

.timeline-epoch {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
}

.timeline-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-block-end: 2px;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Grid de Autores */
.authors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

@media (min-width: 480px) {
  .authors-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.author-card {
  padding: var(--spacing-sm);
  background-color: var(--bg-table);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  transition: var(--transition-fast);
}

.author-card:hover {
  border-color: var(--color-accent);
  background-color: var(--bg-book);
}

.author-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-primary);
}

.author-dates {
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-block-end: 4px;
}

.author-bio {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Utilitários */
.text-center { text-align: center; }
.italic { font-style: italic; }
.mt-sm { margin-block-start: var(--spacing-sm); }
.mt-md { margin-block-start: var(--spacing-md); }
.mt-lg { margin-block-start: var(--spacing-lg); }

/* Animações e Transições de Visualização */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-element {
  animation: fadeIn 0.6s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}