/* ==========================================================================
   VISOR Y LECTOR DE LIBROS ELECTRÓNICOS - FIJATE TOOLS
   Estilos del Espacio de Lectura Inmersivo, Menús, Temas y Modos de Vista
   ========================================================================== */

/* Contenedor principal de la vista de lectura */
.reader-view {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  flex-direction: column;
  background-color: #0f1117;
  color: #e6edf3;
  overflow: hidden;
  user-select: text;
  transition: opacity 0.3s ease;
}

.reader-view.hidden {
  display: none;
  opacity: 0;
  pointer-events: none;
}

/* ==========================================================================
   TEMAS VISUALES DE LECTURA (APLICADOS AL CONTENEDOR Y AL CANVAS)
   ========================================================================== */

/* 1. Noche OLED */
.reader-view[data-theme="dark"] {
  background-color: #0f1117;
  color: #e6edf3;
  --reader-header-bg: rgba(15, 17, 23, 0.92);
  --reader-border: rgba(240, 246, 252, 0.1);
  --reader-control-bg: rgba(255, 255, 255, 0.08);
  --reader-control-hover: rgba(255, 255, 255, 0.16);
  --reader-text-muted: #8b949e;
  --reader-accent: #3b82f6;
}

/* 2. Sepia Cálido */
.reader-view[data-theme="sepia"] {
  background-color: #f5ecd7;
  color: #382a1d;
  --reader-header-bg: rgba(245, 236, 215, 0.94);
  --reader-border: rgba(56, 42, 29, 0.15);
  --reader-control-bg: rgba(56, 42, 29, 0.08);
  --reader-control-hover: rgba(56, 42, 29, 0.15);
  --reader-text-muted: #735a46;
  --reader-accent: #925828;
}

/* 3. Papel Crema / Novela */
.reader-view[data-theme="cream"] {
  background-color: #faf6eb;
  color: #2c2a29;
  --reader-header-bg: rgba(250, 246, 235, 0.94);
  --reader-border: rgba(44, 42, 41, 0.12);
  --reader-control-bg: rgba(44, 42, 41, 0.06);
  --reader-control-hover: rgba(44, 42, 41, 0.12);
  --reader-text-muted: #78716c;
  --reader-accent: #854d0e;
}

/* 4. Luz Minimal */
.reader-view[data-theme="light"] {
  background-color: #ffffff;
  color: #1a202c;
  --reader-header-bg: rgba(255, 255, 255, 0.95);
  --reader-border: rgba(0, 0, 0, 0.08);
  --reader-control-bg: rgba(0, 0, 0, 0.05);
  --reader-control-hover: rgba(0, 0, 0, 0.1);
  --reader-text-muted: #64748b;
  --reader-accent: #2563eb;
}

/* 5. Verde Menta / Forest */
.reader-view[data-theme="mint"] {
  background-color: #eaf4ec;
  color: #1b3824;
  --reader-header-bg: rgba(234, 244, 236, 0.94);
  --reader-border: rgba(27, 56, 36, 0.15);
  --reader-control-bg: rgba(27, 56, 36, 0.07);
  --reader-control-hover: rgba(27, 56, 36, 0.14);
  --reader-text-muted: #436b4e;
  --reader-accent: #15803d;
}

/* 6. Azul Nórdico */
.reader-view[data-theme="nordic"] {
  background-color: #182232;
  color: #dbe4ee;
  --reader-header-bg: rgba(24, 34, 50, 0.94);
  --reader-border: rgba(219, 228, 238, 0.12);
  --reader-control-bg: rgba(255, 255, 255, 0.08);
  --reader-control-hover: rgba(255, 255, 255, 0.15);
  --reader-text-muted: #8fa0b5;
  --reader-accent: #38bdf8;
}

/* ==========================================================================
   CABECERA FLOTANTE DEL LECTOR
   ========================================================================== */

.reader-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--reader-header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 600;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.reader-header.zen-hidden {
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
}

.reader-header-left {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
  flex: 1;
}

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

.reader-book-title {
  font-size: 0.92rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-chapter-title {
  font-size: 0.76rem;
  color: var(--reader-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.reader-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  border-radius: 8px;
  color: inherit;
  cursor: pointer;
  outline: none;
  transition: all 0.15s ease;
}

.reader-btn:hover {
  background: var(--reader-control-hover);
  transform: translateY(-1px);
}

.reader-btn.active {
  background: var(--reader-accent);
  color: #fff;
  border-color: var(--reader-accent);
}

/* ==========================================================================
   ESPACIO DE LECTURA CENTRAL Y PAGINACIÓN
   ========================================================================== */

.reader-workspace {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0 54px;
  overflow: hidden;
}

.reader-container {
  width: 100%;
  height: 100%;
  max-width: 860px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

/* Iframe de ePub.js */
.reader-container iframe {
  border: none !important;
}

/* Flechas de cambio de página flotantes */
.nav-page-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 72px;
  background: var(--reader-control-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--reader-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  cursor: pointer;
  z-index: 550;
  opacity: 0.35;
  transition: all 0.2s ease;
}

.nav-page-btn:hover {
  opacity: 1;
  background: var(--reader-control-hover);
  transform: translateY(-50%) scale(1.05);
}

.nav-page-prev {
  left: 1rem;
}

.nav-page-next {
  right: 1rem;
}

.reader-view.zen-mode .nav-page-btn {
  opacity: 0;
}

.reader-view.zen-mode .nav-page-btn:hover {
  opacity: 0.8;
}

/* ==========================================================================
   BARRA DE PROGRESO INFERIOR
   ========================================================================== */

.reader-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 54px;
  background: var(--reader-header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--reader-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  gap: 1rem;
  z-index: 600;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.reader-footer.zen-hidden {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}

.reader-progress-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex: 1;
  max-width: 600px;
}

.reader-progress-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--reader-control-bg);
  outline: none;
  cursor: pointer;
  transition: opacity 0.15s;
}

.reader-progress-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--reader-accent);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: transform 0.1s ease;
}

.reader-progress-slider::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.reader-progress-percent {
  font-size: 0.82rem;
  font-weight: 700;
  min-width: 44px;
}

.reader-stats-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.78rem;
  color: var(--reader-text-muted);
}

/* ==========================================================================
   PANEL LATERAL DESLIZABLE (DRAWER: ÍNDICE, BÚSQUEDA, MARCADORES, NOTAS)
   ========================================================================== */

.reader-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.reader-drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.reader-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 380px;
  max-width: 90vw;
  background: var(--reader-header-bg);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--reader-border);
  z-index: 750;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.reader-drawer-overlay.open .reader-drawer {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--reader-border);
}

.drawer-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}

.drawer-tabs {
  display: flex;
  border-bottom: 1px solid var(--reader-border);
  padding: 0 0.5rem;
  background: var(--reader-control-bg);
}

.drawer-tab-btn {
  flex: 1;
  padding: 0.65rem 0.4rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--reader-text-muted);
  cursor: pointer;
  outline: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.15s ease;
}

.drawer-tab-btn:hover {
  color: inherit;
}

.drawer-tab-btn.active {
  color: var(--reader-accent);
  border-bottom-color: var(--reader-accent);
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}

/* Lista de Capítulos (TOC) */
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toc-item {
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  font-size: 0.86rem;
  cursor: pointer;
  transition: background 0.15s ease;
  line-height: 1.4;
}

.toc-item:hover {
  background: var(--reader-control-hover);
}

.toc-item.active {
  background: var(--reader-control-hover);
  color: var(--reader-accent);
  font-weight: 700;
}

.toc-item.depth-1 { padding-left: 1.75rem; font-size: 0.82rem; }
.toc-item.depth-2 { padding-left: 2.5rem; font-size: 0.78rem; }

/* Búsqueda en el libro */
.search-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.search-input {
  flex: 1;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  color: inherit;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  font-size: 0.85rem;
  outline: none;
}

.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.search-result-item {
  padding: 0.75rem;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.82rem;
  line-height: 1.45;
  transition: border-color 0.15s;
}

.search-result-item:hover {
  border-color: var(--reader-accent);
}

.search-result-item mark {
  background: rgba(246, 173, 85, 0.4);
  color: inherit;
  font-weight: 700;
  padding: 0 2px;
  border-radius: 2px;
}

/* Marcadores y Anotaciones */
.annotations-list, .bookmarks-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.annotation-card, .bookmark-card {
  padding: 0.75rem;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.45;
  position: relative;
}

.annotation-quote {
  font-style: italic;
  margin-bottom: 0.4rem;
  border-left: 3px solid var(--reader-accent);
  padding-left: 0.6rem;
}

.annotation-note {
  color: var(--reader-text-muted);
  font-size: 0.78rem;
  margin-top: 0.3rem;
}

.annotation-delete-btn, .bookmark-delete-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: transparent;
  border: none;
  color: var(--reader-text-muted);
  cursor: pointer;
}

.annotation-delete-btn:hover, .bookmark-delete-btn:hover {
  color: #f43f5e;
}

/* ==========================================================================
   PANEL FLOTANTE DE AJUSTES TIPOGRÁFICOS Y DE LECTURA
   ========================================================================== */

.reader-settings-panel {
  position: fixed;
  top: 70px;
  right: 1.25rem;
  width: 320px;
  background: var(--reader-header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--reader-border);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  z-index: 650;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.reader-settings-panel.hidden {
  display: none;
  opacity: 0;
  transform: translateY(-8px);
}

.setting-group-title {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--reader-text-muted);
  margin-bottom: 0.5rem;
}

/* Selector de temas (Círculos de color) */
.theme-selector-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.4rem;
}

.theme-swatch-btn {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.theme-swatch-btn:hover {
  transform: scale(1.15);
}

.theme-swatch-btn.active {
  border-color: var(--reader-accent);
  box-shadow: 0 0 0 2px var(--reader-accent);
}

/* Selector de Fuentes */
.font-selector-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.font-option-btn {
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  color: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.15s;
}

.font-option-btn:hover, .font-option-btn.active {
  background: var(--reader-control-hover);
  border-color: var(--reader-accent);
}

/* Controles de Tamaño de Fuente e Interlineado */
.setting-slider-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.setting-slider-row span {
  font-size: 0.85rem;
  min-width: 28px;
  text-align: center;
}

/* Modos de Maquetación */
.layout-mode-group {
  display: flex;
  gap: 0.5rem;
}

.layout-mode-btn {
  flex: 1;
  padding: 0.45rem;
  background: var(--reader-control-bg);
  border: 1px solid var(--reader-border);
  border-radius: 6px;
  color: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.layout-mode-btn.active {
  background: var(--reader-accent);
  color: #fff;
  border-color: var(--reader-accent);
}

/* ==========================================================================
   MENÚ FLOTANTE AL SELECCIONAR TEXTO (POPOVER)
   ========================================================================== */

.selection-popover {
  position: fixed;
  background: var(--reader-header-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--reader-border);
  border-radius: 10px;
  padding: 0.35rem 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 800;
  transform: translate(-50%, -100%);
  margin-top: -10px;
  transition: opacity 0.15s ease;
}

.selection-popover.hidden {
  display: none;
}

.hl-color-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: transform 0.1s;
}

.hl-color-dot:hover {
  transform: scale(1.2);
}

.hl-dot-yellow { background-color: #ffd54f; }
.hl-dot-green { background-color: #81c784; }
.hl-dot-blue { background-color: #64b5f6; }
.hl-dot-pink { background-color: #f48fb1; }

.popover-divider {
  width: 1px;
  height: 18px;
  background: var(--reader-border);
  margin: 0 0.2rem;
}

.popover-btn {
  background: transparent;
  border: none;
  color: inherit;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  font-size: 0.78rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.popover-btn:hover {
  background: var(--reader-control-hover);
}

/* ==========================================================================
   BARRA DE REPRODUCCIÓN TTS (LECTURA EN VOZ ALTA)
   ========================================================================== */

.tts-player-bar {
  position: fixed;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--reader-header-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--reader-border);
  border-radius: 9999px;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  z-index: 620;
  transition: all 0.25s ease;
}

.tts-player-bar.hidden {
  display: none;
}

.tts-btn {
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  transition: background 0.15s;
}

.tts-btn:hover {
  background: var(--reader-control-hover);
}

.tts-play-btn {
  background: var(--reader-accent);
  color: #fff;
  width: 36px;
  height: 36px;
}

.tts-play-btn:hover {
  filter: brightness(1.1);
  background: var(--reader-accent);
}

.tts-rate-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  background: var(--reader-control-bg);
  border-radius: 6px;
  cursor: pointer;
}

/* ==========================================================================
   VISOR DE CÓMICS Y MANGA (CBZ)
   ========================================================================== */

.comic-viewer-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
}

.comic-image-container img {
  max-width: 100%;
  max-height: calc(100vh - 130px);
  object-fit: contain;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

/* ==========================================================================
   VISOR DE TEXTO PLANO / MARKDOWN
   ========================================================================== */

.text-reader-wrapper {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 2rem 4%;
  box-sizing: border-box;
}

.text-reader-content {
  margin: 0 auto;
  max-width: 800px;
}

.text-reader-content h2 {
  font-size: 1.7em;
  margin-bottom: 1.2em;
  text-align: center;
}

.text-reader-content p {
  margin-bottom: 1.1em;
  text-indent: 1.5em;
}