/* ============================================================
   BIBLIOTECA DEL TUBERO - Estilos del Visor
   ============================================================ */

/* ---- Layout del visor ---- */
body.viewer-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Header del visor */
.viewer-header {
  position: relative;
  z-index: 100;
  height: 64px;
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.viewer-header-inner {
  height: 100%;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Botón volver */
.btn-back {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--clr-border);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  flex-shrink: 0;
}
.btn-back svg { width: 16px; height: 16px; }
.btn-back:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.2);
}

/* Título del visor */
.viewer-title-group {
  flex: 1;
  min-width: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  margin-bottom: 2px;
}
.breadcrumb-link { transition: color var(--transition-fast); }
.breadcrumb-link:hover { color: var(--clr-primary); }
.breadcrumb-sep { opacity: 0.5; }
.breadcrumb-current { color: rgba(255,255,255,0.5); }

.viewer-title {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Acciones del visor */
.viewer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-viewer-action {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--clr-border);
  color: rgba(255,255,255,0.5);
  transition: all var(--transition-fast);
}
.btn-viewer-action svg { width: 18px; height: 18px; }
.btn-viewer-action:hover { color: #fff; background: rgba(255,255,255,0.1); }
.btn-viewer-action.active-fav { color: var(--clr-danger); border-color: rgba(255,71,87,0.3); }
.btn-viewer-action.active-fav .icon-heart-outline { display: none; }
.btn-viewer-action.active-fav .icon-heart-filled { display: block !important; }

.btn-download {
  font-size: 0.85rem;
  padding: 8px 16px;
}

/* ---- Main del visor ---- */
.viewer-main {
  flex: 1;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.viewer-main .state-panel {
  height: 100%;
  min-height: unset;
}

/* ---- Layout de contenido ---- */
.viewer-content {
  display: flex;
  height: 100%;
  overflow: hidden;
}
.viewer-content[hidden] { display: none; }

/* ============================================================
   PANEL DE INFO (columna izquierda)
============================================================ */
.manual-info-panel {
  width: 280px;
  flex-shrink: 0;
  height: 100%;
  overflow-y: auto;
  background: rgba(8,12,20,0.7);
  border-right: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-bottom: 24px;
}

/* Portada en panel de info */
.info-cover-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--clr-bg-2);
  overflow: hidden;
  flex-shrink: 0;
}

.info-cover-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.info-cover-placeholder svg {
  width: 100%;
  max-width: 140px;
  color: var(--clr-primary);
}

.info-cover-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--transition-med);
}
.info-cover-img.loaded { opacity: 1; }

/* Bloques de info */
.info-meta-block {
  padding: 16px;
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-meta-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 65px;
}

.info-meta-val {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}

.info-category-chip {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.info-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.35);
  font-weight: 600;
  margin-bottom: 8px;
}

.info-description-block {
  padding: 16px;
  border-bottom: 1px solid var(--clr-border);
}

.info-description-text {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}

.info-tags-block {
  padding: 16px;
  border-bottom: 1px solid var(--clr-border);
}

.info-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.info-tag {
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}

.info-actions {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

/* ============================================================
   PANEL DEL PDF (columna derecha)
============================================================ */
.pdf-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--clr-bg-2);
}

/* ---- Controles del PDF ---- */
.pdf-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  background: rgba(8,12,20,0.8);
  border-bottom: 1px solid var(--clr-border);
  flex-wrap: wrap;
  flex-shrink: 0;
}

.pdf-controls-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pdf-controls-sep {
  width: 1px;
  height: 28px;
  background: var(--clr-border);
  margin: 0 6px;
}

.pdf-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  color: rgba(255,255,255,0.6);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.pdf-btn svg { width: 16px; height: 16px; }
.pdf-btn:hover:not(:disabled) {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.15);
}
.pdf-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Número de página */
.pdf-page-display {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
}

.pdf-page-input {
  width: 48px;
  height: 30px;
  text-align: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.9);
  font-size: 0.85rem;
  font-weight: 500;
}
.pdf-page-input::-webkit-inner-spin-button,
.pdf-page-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.pdf-page-input:focus {
  outline: none;
  border-color: var(--clr-primary);
}

.pdf-page-sep { color: rgba(255,255,255,0.3); font-size: 0.85rem; }
.pdf-total-pages { color: rgba(255,255,255,0.4); font-size: 0.85rem; font-weight: 500; }

/* Zoom select */
.pdf-zoom-select {
  height: 30px;
  padding: 0 28px 0 8px;
  background: rgba(255,255,255,0.06) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 8px center;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.8);
  font-size: 0.82rem;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}
.pdf-zoom-select:focus { outline: none; border-color: var(--clr-primary); }
.pdf-zoom-select option { background: #0d1422; }

/* Búsqueda en PDF */
.pdf-search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.pdf-search-icon {
  position: absolute;
  left: 8px;
  width: 14px;
  height: 14px;
  color: rgba(255,255,255,0.35);
  pointer-events: none;
}
.pdf-search-input {
  height: 30px;
  padding: 0 10px 0 28px;
  width: 180px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.9);
  font-size: 0.82rem;
  transition: border-color var(--transition-fast), width var(--transition-med);
}
.pdf-search-input::placeholder { color: rgba(255,255,255,0.3); }
.pdf-search-input:focus {
  outline: none;
  border-color: var(--clr-primary);
  width: 220px;
}

.pdf-search-count {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  padding: 0 6px;
  white-space: nowrap;
}

/* ---- Área de renderizado ---- */
.pdf-viewport-wrapper {
  flex: 1;
  overflow: auto;
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(0,200,255,0.04) 0%, transparent 50%),
    var(--clr-bg);
}

/* Loader del PDF */
.pdf-loader {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--clr-bg);
  z-index: 10;
}
.pdf-loader p { color: rgba(255,255,255,0.4); font-size: 0.9rem; }
.pdf-loader[hidden] { display: none; }

.pdf-progress-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  overflow: hidden;
}
.pdf-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 99px;
  transition: width 0.3s ease;
}

/* Error del PDF */
.pdf-error {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 32px;
}
.pdf-error svg { width: 56px; height: 56px; color: var(--clr-danger); opacity: 0.7; }
.pdf-error h3 { color: rgba(255,255,255,0.8); }
.pdf-error p { color: rgba(255,255,255,0.4); font-size: 0.9rem; }
.pdf-error[hidden] { display: none; }

/* Canvas del PDF */
.pdf-canvas-container {
  position: relative;
  margin: 24px auto;
  box-shadow: 0 8px 48px rgba(0,0,0,0.8), 0 0 0 1px rgba(255,255,255,0.05);
  border-radius: 4px;
  overflow: hidden;
  transition: transform var(--transition-med);
}

#pdf-canvas {
  display: block;
  max-width: 100%;
}

/* Capa de texto para búsqueda */
.pdf-text-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.25;
  line-height: 1;
  pointer-events: none;
}

.pdf-text-layer span {
  color: transparent;
  position: absolute;
  white-space: pre;
  cursor: text;
  transform-origin: 0% 0%;
}

.pdf-text-layer .highlight {
  background: rgba(255, 220, 0, 0.4);
  border-radius: 2px;
}

/* iframe fallback */
.pdf-iframe-fallback {
  width: 100%;
  height: 100%;
  border: none;
}
.pdf-iframe-fallback[hidden] { display: none; }

/* ---- Navegación inferior (mobile) ---- */
.pdf-nav-bottom {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(8,12,20,0.9);
  border-top: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.pdf-btn-lg {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--clr-border);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.pdf-btn-lg svg { width: 16px; height: 16px; }
.pdf-btn-lg:hover { background: rgba(255,255,255,0.1); color: #fff; }
.pdf-btn-lg:disabled { opacity: 0.3; cursor: not-allowed; }

.pdf-page-indicator {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}

/* ============================================================
   RESPONSIVE VISOR
============================================================ */
@media (max-width: 900px) {
  .viewer-content {
    flex-direction: column;
  }

  .manual-info-panel {
    width: 100%;
    height: auto;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--clr-border);
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 0;
  }

  .info-cover-wrapper {
    width: 120px;
    aspect-ratio: unset;
    height: 160px;
    flex-shrink: 0;
  }

  .info-meta-block,
  .info-description-block,
  .info-tags-block {
    border-bottom: none;
    border-right: 1px solid var(--clr-border);
    flex-shrink: 0;
    width: 200px;
    overflow-y: auto;
    height: 160px;
  }

  .info-actions {
    flex-direction: row;
    padding: 12px;
    flex-shrink: 0;
    width: 200px;
    height: 160px;
    align-content: center;
  }

  .pdf-panel { min-height: 50vh; }
}

@media (max-width: 600px) {
  .viewer-header-inner { padding: 0 12px; gap: 8px; }
  .btn-back span { display: none; }
  .btn-download span { display: none; }

  .pdf-controls { padding: 6px 10px; }
  .pdf-search-group { display: none; }
  .pdf-controls-sep { margin: 0 4px; }

  .pdf-nav-bottom { display: flex; }
  .pdf-canvas-container { margin: 12px auto; }

  .manual-info-panel {
    display: none; /* En mobile muy pequeño se oculta el panel de info */
  }
  .pdf-panel { min-height: 100%; }
}