/* =========================================================
   REY FILÓSOFO · MI BIBLIOTECA
   Gestión de cursos y carpetas personales.
============================================================ */

.rfb-wrap,
#rf-biblioteca-root {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 4px 40px;
  font-family: 'IBM Plex Mono', monospace;
  color: var(--c-text, #e5e7eb);
}

/* ─── Estados ───────────────────────────────────────── */
.rfb-loading {
  padding: 40px 20px;
  text-align: center;
  color: var(--c-muted, #9ca3af);
  font-size: 0.9rem;
}

.rfb-error {
  padding: 14px 16px;
  border-left: 2px solid #f87171;
  background: rgba(248, 113, 113, 0.08);
  color: #f87171;
  border-radius: 0;
  font-size: 0.88rem;
}

.rfb-empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--c-muted, #9ca3af);
}
.rfb-empty p { margin: 8px 0; }
.rfb-empty-hint { font-size: 0.85rem; opacity: 0.75; }

/* ─── Header ────────────────────────────────────────── */
.rfb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(217, 119, 6, 0.15);
}

.rfb-count {
  font-size: 0.85rem;
  color: var(--c-muted, #9ca3af);
  letter-spacing: 0.04em;
}

/* ─── Secciones (carpeta / sin carpeta) ─────────────── */
.rfb-section {
  margin-bottom: 24px;
}
.rfb-section-title {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent, #d97706);
  margin: 0 0 10px;
  font-weight: 500;
}
.rfb-section-title--folder {
  color: var(--c-text, #e5e7eb);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  text-transform: none;
  margin: 0;
}

/* ─── Header de carpeta ─────────────────────────────── */
.rfb-folder {
  padding: 12px 14px;
  background: rgba(217, 119, 6, 0.04);
  border: 1px solid rgba(217, 119, 6, 0.15);
  border-radius: 0;
}
.rfb-folder-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.rfb-folder-actions {
  display: flex;
  gap: 4px;
}
.rfb-folder-empty {
  font-size: 0.82rem;
  color: var(--c-muted, #9ca3af);
  margin: 0;
  padding: 6px 0;
}

/* ─── Lista de cursos ───────────────────────────────── */
.rfb-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rfb-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: var(--p-panel, #111622);
  border: 1px solid rgba(217, 119, 6, 0.12);
  border-radius: 0;
  transition: border-color 0.15s;
}
.rfb-item:hover {
  border-color: rgba(217, 119, 6, 0.35);
}

.rfb-item-info {
  min-width: 0;
  flex: 1;
}
.rfb-item-title {
  font-size: 0.9rem;
  color: var(--c-text, #e5e7eb);
  margin-bottom: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rfb-item-meta {
  font-size: 0.72rem;
  color: var(--c-muted, #9ca3af);
  letter-spacing: 0.03em;
}

.rfb-item-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

/* ─── Select ────────────────────────────────────────── */
.rfb-select {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(217, 119, 6, 0.25);
  border-radius: 0;
  color: var(--c-text, #e5e7eb);
  font: inherit;
  font-size: 0.75rem;
  padding: 4px 6px;
  max-width: 140px;
  cursor: pointer;
}
.rfb-select:focus {
  outline: none;
  border-color: var(--accent, #d97706);
}

/* ─── Botones ───────────────────────────────────────── */
.rfb-btn {
  font: inherit;
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 0;
  cursor: pointer;
  transition: all 0.15s;
  border: 1px solid transparent;
}
.rfb-btn--ghost {
  background: transparent;
  color: var(--c-text, #e5e7eb);
  border-color: rgba(217, 119, 6, 0.3);
}
.rfb-btn--ghost:hover {
  border-color: var(--accent, #d97706);
  color: var(--accent, #d97706);
}

.rfb-icon-btn {
  background: transparent;
  border: 1px solid rgba(217, 119, 6, 0.2);
  border-radius: 0;
  color: var(--c-muted, #9ca3af);
  font: inherit;
  font-size: 0.8rem;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s;
  padding: 0;
}
.rfb-icon-btn:hover {
  border-color: var(--accent, #d97706);
  color: var(--accent, #d97706);
}
.rfb-icon-btn--danger:hover {
  border-color: #f87171;
  color: #f87171;
}

/* ─── Responsive ────────────────────────────────────── */
@media (max-width: 600px) {
  .rfb-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .rfb-item-actions {
    width: 100%;
    justify-content: flex-end;
  }
  .rfb-select {
    max-width: 100%;
    flex: 1;
  }
}


/* ─── Pantalla para invitado ─────────────────────── */
.rfb-guest {
  padding: 50px 20px;
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
}
.rfb-guest-mark {
  font-size: 3rem;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 14px rgba(217, 119, 6, 0.35));
}
.rfb-guest-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0 0 12px;
  color: var(--c-text, #e5e7eb);
}
.rfb-guest-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--c-muted, #9ca3af);
  margin: 0 0 24px;
}

.rfb-btn--primary {
  background: var(--accent, #d97706);
  color: #0a0e17;
  border-color: var(--accent, #d97706);
  font-weight: 500;
  padding: 10px 22px;
  font-size: 0.9rem;
}
.rfb-btn--primary:hover {
  background: #ea8c1c;
  border-color: #ea8c1c;
  box-shadow: 0 0 16px rgba(217, 119, 6, 0.4);
}

/* ─── Documentos dentro de un curso ─────────────── */
.rfb-docs {
  margin-top: 6px;
}
.rfb-docs-summary {
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--c-muted, #9ca3af);
  letter-spacing: 0.04em;
  user-select: none;
  list-style: none;
  padding: 2px 0;
}
.rfb-docs-summary::-webkit-details-marker { display: none; }
.rfb-docs[open] .rfb-docs-summary {
  color: var(--accent, #d97706);
}
.rfb-docs-list {
  list-style: none;
  padding: 6px 0 2px 12px;
  margin: 0;
  border-left: 1px solid rgba(217, 119, 6, 0.2);
  margin-left: 4px;
}
.rfb-doc-item {
  display: flex;
  gap: 8px;
  padding: 3px 0;
  font-size: 0.8rem;
  color: var(--c-text, #e5e7eb);
  line-height: 1.4;
}
.rfb-doc-order {
  color: var(--accent, #d97706);
  flex-shrink: 0;
  font-weight: 500;
  min-width: 16px;
}
.rfb-doc-title {
  color: rgba(229, 231, 235, 0.85);
}


/* ─── Acciones por documento ─────────────────────── */
.rfb-doc-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}
.rfb-doc-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rfb-doc-actions {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity 0.15s;
}
.rfb-doc-item:hover .rfb-doc-actions {
  opacity: 1;
}
.rfb-icon-btn--sm {
  width: 22px;
  height: 22px;
  font-size: 0.7rem;
}