.pnet-pdf-flipbook {
  --pnet-fb-bg: linear-gradient(180deg, #f8f6f1 0%, #ece7dc 100%);
  --pnet-fb-surface: #fffef8;
  --pnet-fb-border: #d8d0bf;
  --pnet-fb-text: #2c2518;
  --pnet-fb-button: #3b5d4a;
  --pnet-fb-button-text: #ffffff;
  --pnet-fb-button-hover: #2f4a3b;
  --pnet-fb-button-exit: #8a2f2f;
  --pnet-fb-button-exit-hover: #6f2525;
  --pnet-fb-toolbar-overlay-opacity: 0.75;
  background: var(--pnet-fb-bg);
  border: 1px solid var(--pnet-fb-border);
  border-radius: 10px;
  padding: 12px;
  position: relative;
}

.pnet-pdf-flipbook-toolbar {
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  z-index: 30;
  margin-bottom: 0;
  padding: 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, var(--pnet-fb-toolbar-overlay-opacity));
}

/* Toolbar overlay senza sfondo pannello: solo bottoni visibili */
.pnet-pdf-flipbook--toolbar-overlay-nobg .pnet-pdf-flipbook-toolbar {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

.pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar button {
  background: var(--pnet-fb-button-overlay, var(--pnet-fb-button));
}

.pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar button:hover {
  background: var(--pnet-fb-button-overlay-hover, var(--pnet-fb-button-hover));
}

.pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar [data-action="exit"] {
  background: var(--pnet-fb-button-overlay-exit, var(--pnet-fb-button-exit));
}

.pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar [data-action="exit"]:hover {
  background: var(--pnet-fb-button-overlay-exit-hover, var(--pnet-fb-button-exit-hover));
}

.pnet-pdf-flipbook-toolbar button {
  background: var(--pnet-fb-button);
  color: var(--pnet-fb-button-text);
  border: 0;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pnet-pdf-flipbook-btn-icon {
  display: none;
  font-size: 16px;
  line-height: 1;
}

.pnet-pdf-flipbook--toolbar-icons .pnet-pdf-flipbook-btn-icon {
  display: inline-block;
}

.pnet-pdf-flipbook--toolbar-icons .pnet-pdf-flipbook-btn-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.pnet-pdf-flipbook--toolbar-icons .pnet-pdf-flipbook-toolbar button {
  min-width: 40px;
  justify-content: center;
}

.pnet-pdf-flipbook-toolbar button:hover {
  background: var(--pnet-fb-button-hover);
}

.pnet-pdf-flipbook-toolbar [data-action="exit"] {
  margin-left: auto;
  background: var(--pnet-fb-button-exit);
}

.pnet-pdf-flipbook-toolbar [data-action="exit"]:hover {
  background: var(--pnet-fb-button-exit-hover);
}

.pnet-pdf-flipbook .is-hidden {
  display: none;
}

.pnet-pdf-flipbook-stage {
  width: 100%;
  min-height: var(--pnet-fb-stage-height, 520px);
  height: var(--pnet-fb-stage-height, auto);
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--pnet-fb-surface);
  border-radius: 8px;
  overflow: hidden;
}

.pnet-pdf-flipbook.is-fullpage {
  position: fixed;
  inset: 0;
  z-index: 9999;
  margin: 0;
  border-radius: 0;
  padding: 10px;
  display: flex;
  flex-direction: column;
}

.pnet-pdf-flipbook.is-fullpage .pnet-pdf-flipbook-stage {
  flex: 1 1 auto;
  min-height: 0;
  height: calc(100vh - 72px);
}

.pnet-pdf-flipbook:fullscreen,
.pnet-pdf-flipbook:-webkit-full-screen {
  border-radius: 0;
  border: 0;
  padding: 10px;
  display: flex;
  flex-direction: column;
}

.pnet-pdf-flipbook:fullscreen .pnet-pdf-flipbook-stage,
.pnet-pdf-flipbook:-webkit-full-screen .pnet-pdf-flipbook-stage {
  flex: 1 1 auto;
  min-height: 0;
  height: calc(100vh - 72px);
}

body.pnet-fb-lock-scroll {
  overflow: hidden;
}

.pnet-pdf-flipbook-page {
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pnet-pdf-flipbook-page canvas {
  display: block;
  width: 100%;
  height: auto;
}

.pnet-pdf-flipbook-page-loading {
  color: var(--pnet-fb-text);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pnet-pdf-flipbook-page-loading-spinner {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 3px solid rgba(59, 93, 74, 0.25);
  border-top-color: var(--pnet-fb-button, #3b5d4a);
  border-radius: 50%;
  animation: pnet-fb-spin 0.75s linear infinite;
}

@keyframes pnet-fb-spin {
  to { transform: rotate(360deg); }
}

.pnet-pdf-flipbook-loading-overlay {
  width: 100%;
  height: 100%;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.pnet-pdf-flipbook-progress-wrap {
  width: 180px;
  height: 4px;
  background: rgba(59, 93, 74, 0.15);
  border-radius: 2px;
  overflow: hidden;
}

.pnet-pdf-flipbook-progress-bar {
  height: 100%;
  background: var(--pnet-fb-button, #3b5d4a);
  border-radius: 2px;
  transition: width 0.2s ease;
}

.pnet-pdf-flipbook-progress-text {
  color: var(--pnet-fb-text, #2c2518);
  font-size: 12px;
  opacity: 0.7;
}

.pnet-pdf-flipbook-error-overlay {
  width: 100%;
  height: 100%;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
}

.pnet-pdf-flipbook-error-msg {
  color: var(--pnet-fb-text);
  font-size: 14px;
  text-align: center;
}

.pnet-pdf-flipbook-retry-btn {
  background: var(--pnet-fb-button, #3b5d4a);
  color: var(--pnet-fb-button-text, #ffffff);
  border: 0;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
}

.pnet-pdf-flipbook-retry-btn:hover {
  background: var(--pnet-fb-button-hover, #2f4a3b);
}

@media (max-width: 768px) {
  .pnet-pdf-flipbook--toolbar-overlay .pnet-pdf-flipbook-toolbar {
    top: 8px;
    left: 8px;
    right: 8px;
  }

  .pnet-pdf-flipbook--toolbar-overlay-nobg .pnet-pdf-flipbook-toolbar {
    background: transparent;
    padding: 0;
  }

  .pnet-pdf-flipbook-stage {
    min-height: var(--pnet-fb-stage-height, 360px);
  }

  .pnet-pdf-flipbook.is-fullpage,
  .pnet-pdf-flipbook:fullscreen,
  .pnet-pdf-flipbook:-webkit-full-screen {
    padding: 8px;
  }

  .pnet-pdf-flipbook.is-fullpage .pnet-pdf-flipbook-stage,
  .pnet-pdf-flipbook:fullscreen .pnet-pdf-flipbook-stage,
  .pnet-pdf-flipbook:-webkit-full-screen .pnet-pdf-flipbook-stage {
    height: calc(100vh - 96px);
  }
}