html, body.reader-body { height: 100%; overflow: hidden; }

.reader-page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

/* ============ TOPBAR ============ */
.reader-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  padding-top: max(12px, env(safe-area-inset-top));
  padding-right: max(24px, env(safe-area-inset-right));
  padding-left: max(24px, env(safe-area-inset-left));
  background: var(--navy);
  flex: none;
}

.reader-back {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  flex: none;
  padding: 6px;
  margin: -6px;
  border-radius: 8px;
}
.reader-back:hover { color: var(--gold); }

.reader-book-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: center;
  min-width: 0;
}
.reader-mini-cover { width: 36px; height: 48px; object-fit: cover; border-radius: 4px; flex: none; }
.reader-book-info-text { min-width: 0; }
.reader-book-info strong {
  display: block;
  font-size: 14px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.reader-book-info span {
  display: block;
  font-size: 12px;
  color: #b9c4c2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.reader-actions { display: flex; gap: 8px; flex: none; }
.reader-action-btn {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: rgba(255,255,255,.08);
  font-size: 14px;
}
.reader-action-btn:hover { background: rgba(255,255,255,.18); }

/* ============ PDF VIEWER ============ */
.reader-frame-wrap {
  flex: 1;
  background: #525659;
  padding-bottom: env(safe-area-inset-bottom);
  min-height: 0;
}
.reader-frame { width: 100%; height: 100%; border: none; display: block; }
.reader-empty {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: #d7d9da;
  text-align: center;
}
.reader-empty i { font-size: 42px; opacity: .7; }
.reader-empty p { font-size: 15px; font-weight: 600; }

/* ============ MOBILE ============ */
@media (max-width: 640px) {
  .reader-topbar { padding: 10px 14px; gap: 8px; }
  .reader-topbar { padding-right: max(14px, env(safe-area-inset-right)); padding-left: max(14px, env(safe-area-inset-left)); }
  .reader-back span { display: none; }
  .reader-book-info span { display: none; }
  .reader-book-info { gap: 8px; }
  .reader-mini-cover { width: 30px; height: 40px; }

  /* Bigger, thumb-friendly tap targets */
  .reader-back { padding: 10px; margin: -10px; }
  .reader-action-btn { width: 42px; height: 42px; font-size: 15px; }
}

@media (max-width: 380px) {
  .reader-mini-cover { display: none; }
  .reader-book-info strong { font-size: 13px; }
}