.pdf-reader {
  margin-top: 20px;
  padding: 18px;
  background: var(--color-surface-soft);
  border: 1px solid #303037;
  border-radius: 18px;
}

.pdf-reader__toolbar {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 46px;
  align-items: center;
  gap: 12px;
}

.pdf-reader__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  padding: 0;
  color: var(--color-text);
  background: #19191e;
  border: 1px solid #393941;
  border-radius: 14px;
  cursor: pointer;
  font-size: 22px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.pdf-reader__button:disabled,
.pdf-reader__page-input:disabled {
  cursor: default;
  opacity: .35;
}

.pdf-reader__pagination {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--color-muted);
  font-size: 13px;
  white-space: nowrap;
}

.pdf-reader__page-input {
  width: 68px;
  height: 42px;
  padding: 0 8px;
  color: var(--color-text);
  color-scheme: dark;
  text-align: center;
  background: #19191e;
  border: 1px solid #393941;
  border-radius: 11px;
}

.pdf-reader__status {
  display: flex;
  min-height: 48px;
  margin-top: 14px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-muted);
  font-size: 13px;
  text-align: center;
}

.pdf-reader[data-state="loading"] .pdf-reader__status::before,
.pdf-reader[data-state="rendering"] .pdf-reader__status::before {
  width: 16px;
  height: 16px;
  border: 2px solid #3b3b44;
  border-top-color: var(--color-text);
  border-radius: 50%;
  content: "";
  animation: pdf-reader-spin .8s linear infinite;
}

.pdf-reader[data-state="error"] .pdf-reader__status {
  padding: 12px 14px;
  color: #d6b7b7;
  background: rgba(80, 35, 35, .18);
  border: 1px solid rgba(161, 91, 91, .35);
  border-radius: 12px;
}

.pdf-reader__viewport {
  width: 100%;
  height: min(76svh, 860px);
  min-height: 380px;
  margin-top: 14px;
  overflow: auto;
  overscroll-behavior: contain;
  background:
    linear-gradient(45deg, rgba(255,255,255,.018) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.018) 75%),
    linear-gradient(45deg, rgba(255,255,255,.018) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.018) 75%),
    #0d0d10;
  background-position: 0 0, 12px 12px;
  background-size: 24px 24px;
  border: 1px solid #2d2d34;
  border-radius: 14px;
  scrollbar-color: #45454f #17171b;
  touch-action: pan-y pinch-zoom;
}

.pdf-reader__stage {
  display: flex;
  width: 100%;
  min-width: 0;
  min-height: 100%;
  padding: 16px;
  align-items: flex-start;
  justify-content: center;
}

.pdf-reader__canvas {
  display: block;
  max-width: 100%;
  background: #fff;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

.pdf-reader__status[hidden],
.pdf-reader__canvas[hidden] {
  display: none;
}

.pdf-reader__hint {
  margin-top: 12px;
  color: var(--color-subtle);
  font-size: 11px;
  line-height: 1.45;
  text-align: center;
}

.pdf-reader:focus-visible {
  outline: 2px solid var(--color-subtle);
  outline-offset: 3px;
}

@keyframes pdf-reader-spin {
  to { transform: rotate(360deg); }
}

@media (hover: hover) and (pointer: fine) {
  .pdf-reader__button:not(:disabled):hover {
    background: #202026;
    border-color: #555560;
  }
}

@media (max-width: 480px) {
  .pdf-reader {
    margin-top: 16px;
    padding: 13px;
    border-radius: 16px;
  }

  .pdf-reader__toolbar {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    gap: 8px;
  }

  .pdf-reader__button {
    width: 44px;
    height: 44px;
    border-radius: 13px;
  }

  .pdf-reader__pagination {
    gap: 5px;
    font-size: 12px;
  }

  .pdf-reader__page-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .pdf-reader__page-input {
    width: 58px;
    height: 40px;
  }

  .pdf-reader__viewport {
    height: 72svh;
    min-height: 360px;
    border-radius: 12px;
  }

  .pdf-reader__stage {
    padding: 8px;
  }
}

@media (max-width: 360px) {
  .pdf-reader {
    padding: 11px 9px;
  }

  .pdf-reader__toolbar {
    gap: 6px;
  }

  .pdf-reader__page-input {
    width: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .pdf-reader[data-state="loading"] .pdf-reader__status::before,
  .pdf-reader[data-state="rendering"] .pdf-reader__status::before {
    animation: none;
  }
}