/* ==========================================================================
   Leitor Interativo de Trechos & Degustação - John S. Meinlem
   ========================================================================== */

/* Botão de Degustação nas Páginas dos Livros */
.button-sample {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #38bdf8 !important;
  border: 1px solid #38bdf8;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.15);
  font-size: 1rem;
  margin-top: 0.5rem;
}

.button-sample:hover,
.button-sample:focus-visible {
  background: #38bdf8;
  color: #0f172a !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
  outline: none;
}

/* Modal Overlay */
.sample-reader-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sample-reader-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

/* Modal Container */
.sample-reader-modal {
  width: 100%;
  max-width: 820px;
  height: 90vh;
  max-height: 840px;
  display: flex;
  flex-direction: column;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.1);
  overflow: hidden;
  transform: scale(0.96) translateY(10px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sample-reader-overlay.is-active .sample-reader-modal {
  transform: scale(1) translateY(0);
}

/* Temas de Leitura */
/* 1. Tema Dark (Padrão) */
.sample-reader-modal.theme-dark {
  background: #0f172a;
  color: #e2e8f0;
  border: 1px solid #334155;
}
.sample-reader-modal.theme-dark .reader-header,
.sample-reader-modal.theme-dark .reader-footer {
  background: #090d16;
  border-color: #1e293b;
}
.sample-reader-modal.theme-dark .reader-content {
  background: #0f172a;
  color: #e2e8f0;
}
.sample-reader-modal.theme-dark .reader-tool-btn {
  background: #1e293b;
  color: #94a3b8;
  border-color: #334155;
}
.sample-reader-modal.theme-dark .reader-tool-btn:hover,
.sample-reader-modal.theme-dark .reader-tool-btn.is-active {
  background: #38bdf8;
  color: #0f172a;
  border-color: #38bdf8;
}

/* 2. Tema Sépia */
.sample-reader-modal.theme-sepia {
  background: #fbf0d9;
  color: #433422;
  border: 1px solid #e6d3af;
}
.sample-reader-modal.theme-sepia .reader-header,
.sample-reader-modal.theme-sepia .reader-footer {
  background: #f4e2bf;
  border-color: #dfcaa2;
}
.sample-reader-modal.theme-sepia .reader-content {
  background: #fbf0d9;
  color: #3f2f1d;
}
.sample-reader-modal.theme-sepia .reader-tool-btn {
  background: #ede0c4;
  color: #5c472d;
  border-color: #d8c49e;
}
.sample-reader-modal.theme-sepia .reader-tool-btn:hover,
.sample-reader-modal.theme-sepia .reader-tool-btn.is-active {
  background: #8b5cf6;
  color: #ffffff;
  border-color: #8b5cf6;
}

/* 3. Tema Claro */
.sample-reader-modal.theme-light {
  background: #ffffff;
  color: #1e293b;
  border: 1px solid #cbd5e1;
}
.sample-reader-modal.theme-light .reader-header,
.sample-reader-modal.theme-light .reader-footer {
  background: #f8fafc;
  border-color: #e2e8f0;
}
.sample-reader-modal.theme-light .reader-content {
  background: #ffffff;
  color: #1e293b;
}
.sample-reader-modal.theme-light .reader-tool-btn {
  background: #f1f5f9;
  color: #475569;
  border-color: #cbd5e1;
}
.sample-reader-modal.theme-light .reader-tool-btn:hover,
.sample-reader-modal.theme-light .reader-tool-btn.is-active {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

/* Header */
.reader-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid;
  gap: 1rem;
  flex-shrink: 0;
}

.reader-title-box {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.reader-book-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-book-subtitle {
  font-size: 0.8rem;
  opacity: 0.75;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.reader-tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid;
  cursor: pointer;
  transition: all 0.2s;
}

.reader-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  font-size: 1.25rem;
  cursor: pointer;
  transition: all 0.2s;
  margin-left: 0.25rem;
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
  touch-action: manipulation;
}

.reader-close-btn:hover {
  background: #ef4444;
  color: #ffffff;
}

/* Área de Leitura */
.reader-content {
  flex: 1;
  padding: 2.5rem 3rem;
  overflow-y: auto;
  font-family: 'Merriweather', Georgia, 'Times New Roman', serif;
  line-height: 1.85;
  scroll-behavior: smooth;
}

/* Tamanhos de Fonte */
.reader-content.font-sm { font-size: 0.95rem; }
.reader-content.font-md { font-size: 1.15rem; }
.reader-content.font-lg { font-size: 1.35rem; }
.reader-content.font-xl { font-size: 1.55rem; }

.reader-text-page {
  animation: fadeInText 0.3s ease forwards;
}

@keyframes fadeInText {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reader-text-page p {
  margin-bottom: 1.4em;
  text-indent: 1.5em;
  text-align: justify;
}

.reader-text-page p:first-of-type {
  text-indent: 0;
}

.reader-text-page p:first-of-type::first-letter {
  font-size: 2.5em;
  float: left;
  line-height: 0.85;
  margin: 0.1em 0.15em 0 0;
  font-weight: 700;
  font-family: inherit;
  color: #38bdf8;
}

.sample-reader-modal.theme-sepia .reader-text-page p:first-of-type::first-letter {
  color: #9333ea;
}

.sample-reader-modal.theme-light .reader-text-page p:first-of-type::first-letter {
  color: #2563eb;
}

/* Caixa de Fim da Amostra / CTA */
.reader-end-cta {
  margin-top: 2.5rem;
  padding: 1.5rem;
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px dashed rgba(56, 189, 248, 0.4);
  text-align: center;
}

.reader-end-cta h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
  font-family: system-ui, -apple-system, sans-serif;
}

.reader-end-cta p {
  text-indent: 0 !important;
  text-align: center !important;
  font-size: 0.95rem;
  opacity: 0.85;
  margin-bottom: 1.25rem;
  font-family: system-ui, -apple-system, sans-serif;
}

.reader-buy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #38bdf8;
  color: #0f172a !important;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  font-family: system-ui, -apple-system, sans-serif;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

.reader-buy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.5);
}

/* Footer & Navegação */
.reader-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid;
  flex-shrink: 0;
  gap: 1rem;
}

.reader-page-info {
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.8;
  font-family: system-ui, -apple-system, sans-serif;
}

.reader-nav-buttons {
  display: flex;
  gap: 0.5rem;
}

.reader-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid;
  touch-action: manipulation;
}

.reader-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Responsividade Mobile */
@media (max-width: 640px) {
  .sample-reader-overlay {
    padding: 0;
  }
  .sample-reader-modal {
    height: 100vh;
    max-height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
  }
  .reader-content {
    padding: 1.5rem 1.25rem;
  }
  .reader-header {
    padding: max(0.75rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) 0.75rem max(1rem, env(safe-area-inset-left));
  }
  .reader-book-subtitle {
    display: none;
  }
  .reader-footer {
    padding: 0.7rem max(0.85rem, env(safe-area-inset-right)) max(0.7rem, env(safe-area-inset-bottom)) max(0.85rem, env(safe-area-inset-left));
    gap: 0.55rem;
  }
  .reader-nav-buttons {
    gap: 0.35rem;
  }
  .reader-nav-btn {
    min-height: 44px;
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 380px) {
  .reader-toolbar {
    gap: 0.25rem;
  }
  .reader-tool-btn {
    min-width: 30px;
    padding-inline: 0.35rem;
  }
  .reader-page-info {
    font-size: 0.75rem;
  }
  .reader-nav-btn {
    padding-inline: 0.55rem;
    font-size: 0.78rem;
  }
}