* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: #202124;
  background: #f5f5f2;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 72px;
  padding: 10px 18px;
  border-bottom: 1px solid #c8c7c1;
  background: #ffffff;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 20px;
  font-weight: 650;
}

header p {
  margin-top: 4px;
  color: #5f6368;
  font-size: 13px;
}

.toolbar {
  display: flex;
  gap: 6px;
}

button {
  min-height: 32px;
  border: 1px solid #b8b8b2;
  background: #fff;
  color: #202124;
  cursor: pointer;
}

button:hover {
  background: #ecece7;
}

main {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  height: calc(100vh - 72px);
}

aside {
  overflow: auto;
  border-right: 1px solid #c8c7c1;
  background: #ffffff;
  padding: 12px;
}

#filter {
  width: 100%;
  height: 34px;
  border: 1px solid #b8b8b2;
  padding: 0 10px;
  margin-bottom: 12px;
}

.issue {
  padding: 10px 0;
  border-bottom: 1px solid #e2e1dc;
}

.issue h2 {
  font-size: 14px;
  margin-bottom: 4px;
}

.issue-links {
  display: flex;
  gap: 10px;
  font-size: 12px;
  margin-bottom: 8px;
}

.issue-links a {
  color: #185abc;
  text-decoration: none;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}

.page-grid button {
  font-size: 12px;
  padding: 4px 0;
}

.page-grid button.selected {
  border-color: #185abc;
  background: #dbe8ff;
  font-weight: 650;
}

#viewer {
  min-width: 0;
  overflow: auto;
  padding: 14px;
}

#page-meta {
  background: #ffffff;
  border: 1px solid #d8d7d1;
  padding: 10px 12px;
  margin-bottom: 12px;
}

#page-meta h2 {
  font-size: 16px;
  margin-bottom: 8px;
}

dl {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 4px 10px;
  margin: 0;
  font-size: 12px;
}

dt {
  color: #5f6368;
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.artifact-link {
  min-height: 0;
  border: 0;
  padding: 0;
  background: transparent;
  color: #185abc;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}

.artifact-link:hover {
  background: transparent;
  text-decoration: underline;
}

code {
  color: #5f6368;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  overflow-wrap: anywhere;
}

.missing {
  color: #7b342f;
  font-weight: 600;
}

#page-surface {
  display: grid;
  grid-template-columns: minmax(420px, 1fr) minmax(320px, 520px);
  gap: 14px;
  align-items: start;
}

#image-wrap {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-width: 0;
  overflow: auto;
}

#page-image {
  max-width: none;
  height: auto;
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.22);
  background: #fff;
}

#ocr-panel {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  max-height: calc(100vh - 162px);
  border: 1px solid #d8d7d1;
  background: #ffffff;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid #e2e1dc;
}

.panel-heading h2 {
  font-size: 15px;
}

#ocr-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
}

#ocr-text {
  flex: 1;
  margin: 0;
  padding: 12px;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
}

.page-grid button.ocr-ready {
  border-bottom-color: #137333;
  border-bottom-width: 3px;
}

.page-grid button.corrected-ready {
  border-top-color: #b06000;
  border-top-width: 3px;
}

@media (max-width: 1100px) {
  main {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  #page-surface {
    grid-template-columns: minmax(0, 1fr);
  }

  #ocr-panel {
    max-height: 520px;
  }
}

@media (max-width: 760px) {
  header {
    height: auto;
    align-items: flex-start;
  }

  main {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
  }

  aside {
    max-height: 260px;
    border-right: 0;
    border-bottom: 1px solid #c8c7c1;
  }
}