/* Default look for the read-as-book viewer.
 *
 * Import once (`import "read-as-book/styles.css"`) or copy into your own
 * stylesheet. Everything is driven by the custom properties below, so a theme
 * is usually a few overrides on .rab-overlay rather than a fork. */

.rab-overlay {
  --rab-backdrop: rgba(0, 0, 0, 0.92);
  --rab-fg: rgba(255, 255, 255, 0.85);
  --rab-fg-muted: rgba(255, 255, 255, 0.6);
  --rab-fg-faint: rgba(255, 255, 255, 0.4);
  --rab-border: rgba(255, 255, 255, 0.25);
  --rab-border-hover: rgba(255, 255, 255, 0.6);
  --rab-z: 110;
  --rab-font: inherit;

  position: fixed;
  inset: 0;
  z-index: var(--rab-z);
  display: flex;
  flex-direction: column;
  background: var(--rab-backdrop);
  backdrop-filter: blur(4px);
  font-family: var(--rab-font);
  color: var(--rab-fg);
}

.rab-chrome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
}

.rab-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.rab-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.rab-counter {
  color: var(--rab-fg-muted);
  font-variant-numeric: tabular-nums;
}

.rab-btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--rab-border);
  border-radius: 999px;
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--rab-fg);
  background: transparent;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease;
}

.rab-btn:hover {
  border-color: var(--rab-border-hover);
}

.rab-stage {
  position: relative;
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 0.5rem;
}

.rab-book-wrap {
  max-width: 100%;
  max-height: 100%;
}

.rab-book {
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.rab-loading {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.rab-arrow {
  position: absolute;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--rab-border);
  border-radius: 999px;
  background: transparent;
  color: var(--rab-fg);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease;
}

.rab-arrow:hover {
  border-color: var(--rab-border-hover);
  background: rgba(255, 255, 255, 0.1);
}

.rab-arrow-prev { left: 0.5rem; }
.rab-arrow-next { right: 0.5rem; }

.rab-hint {
  padding-bottom: 0.75rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--rab-fg-faint);
}

/* Default trigger button for the React <ReadAsBook> component. It inherits the
 * host page's colours so it sits inside an existing design system. */
.rab-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

@media (min-width: 640px) {
  .rab-chrome { padding-left: 1.5rem; padding-right: 1.5rem; }
  .rab-stage { padding: 0 1.5rem; }
  .rab-arrow-prev { left: 1rem; }
  .rab-arrow-next { right: 1rem; }
}

@media (max-width: 639px) {
  .rab-download { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .rab-btn, .rab-arrow { transition: none; }
}