:root {
  --viewer-border: #dee2e6;
  --viewer-bg: #f8f9fa;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: #fff;
}

.viewer-main {
  min-height: 100vh;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  gap: 0;
}

.viewer-toolbar {
  background-color: var(--viewer-bg);
  border-radius: 0;
  padding: 0.75rem 1rem;
  box-shadow: none;
  border-bottom: 1px solid var(--viewer-border);
}

.icon-btn {
  border: none;
  background-color: transparent;
  color: #495057;
  padding: 0  ;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-toolbar .icon-btn {
  padding-left: 1rem;
}

.page-control .icon-btn {
  padding: 0;
}

.viewer-toolbar .gap-2 {
  gap: 0.25rem;
}

.icon-btn .material-icons-outlined {
  font-size: 2rem;
  line-height: 1;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  background-color: transparent;
  color: #212529;
}

.icon-btn.active {
  color: #0b7285;
}

.viewer-canvas-wrapper {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  padding: 0;
  overflow: auto;
}

.viewer-canvas-wrapper canvas {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  background-color: #fff;
}

.drawing-layer {
  position: absolute;
  inset: 0;
  margin: auto;
  touch-action: none;
  pointer-events: none;
  z-index: 2;
}

.viewer-canvas-wrapper canvas.drawing-layer {
  background-color: transparent;
}

.viewer-overlay {
  position: absolute;
  inset: 0;
  background: rgb(255 255 255 / 0.85);
  z-index: 5;
  text-align: center;
}

.viewer-overlay.hidden {
  display: none !important;
}

.page-indicator input[type="number"]::-webkit-outer-spin-button,
.page-indicator input[type="number"]::-webkit-inner-spin-button {
  margin: 0;
}

.page-indicator input[type="number"] {
  appearance: textfield;
  width: 40px;
  text-align: right;
}

.draw-color-picker {
  position: relative;
  padding-left: 1rem;
}

.draw-color-toggle {
  cursor: pointer;
  border-radius: 999px;
  padding: 0.25rem;
}

.draw-color-toggle:focus-visible {
  outline: 2px solid #0b7285;
  outline-offset: 2px;
}

.draw-color-picker .draw-color-input {
  appearance: none;
  border: none;
  width: 1.4rem;
  height: 1.4rem;
  padding: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  pointer-events: none;
}

.draw-color-picker .draw-color-input::-webkit-color-swatch-wrapper {
  padding: 0;
  border-radius: 50%;
}

.draw-color-picker .draw-color-input::-webkit-color-swatch {
  border: none;
  border-radius: 50%;
}

.draw-color-picker .draw-color-input::-moz-color-swatch {
  border: none;
  border-radius: 50%;
}

.draw-color-menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  background: #fff;
  border: 1px solid var(--viewer-border);
  box-shadow: 0 12px 30px rgb(0 0 0 / 0.12);
  border-radius: 0.75rem;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 12;
}

.draw-color-menu.hidden {
  display: none;
}

.draw-color-option {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px #adb5bd;
  background: var(--swatch-color, #000);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.draw-color-option:hover {
  transform: translateY(-1px);
}

.draw-color-option:focus-visible,
.draw-color-palette-btn:focus-visible {
  outline: 2px solid #0b7285;
  outline-offset: 2px;
}

.draw-color-option.active {
  box-shadow: 0 0 0 2px #0b7285;
  transform: scale(1.05);
}

.draw-color-palette-btn {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 0.65rem;
  border: 1px solid #ced4da;
  background: #f8f9fa;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #212529;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.draw-color-palette-btn:hover {
  background: #e9ecef;
  transform: translateY(-1px);
}

.viewer-modal {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 1rem;
}

.viewer-modal.hidden {
  display: none !important;
}

.viewer-modal__dialog {
  background: #fff;
  border-radius: 0.5rem;
  box-shadow: 0 10px 30px rgb(0 0 0 / 0.15);
  max-width: 360px;
  width: 100%;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.viewer-modal__body {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.viewer-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.viewer-code-block {
  background: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 0.5rem;
  padding: 0.75rem;
  font-family: "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 240px;
  overflow: auto;
}

.viewer-code-block.hidden {
  display: none;
}