:root {
  color-scheme: light;
  --accent: #3118be;
  --page-bg: #f3f3f3;
  --border: #dddddd;
  --text: #111111;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--page-bg);
  color: var(--text);
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: rgb(255 255 255 / 96%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

header h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.2;
  text-align: center;
}

header a {
  width: max-content;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--text);
  border-radius: 999px;
  background: #ffffff;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1;
  text-decoration: none;
}

header a:last-child {
  justify-self: end;
}

header a:hover,
header a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

#viewer {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 0.75rem 2rem;
}

.pdf-page {
  position: relative;
  max-width: 100%;
  margin: 0 auto 1rem;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 2px 12px rgb(0 0 0 / 16%);
}

.pdf-page canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.textLayer,
.manualLinkLayer {
  position: absolute;
  inset: 0;
}

.textLayer {
  z-index: 2;
}

.manualLinkLayer {
  z-index: 5;
  pointer-events: none;
}

.manualLinkLayer a {
  position: absolute;
  display: block;
  background: transparent;
  text-decoration: none;
  cursor: pointer;
  pointer-events: auto;
}

.manualLinkLayer a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#status {
  padding: 2rem 1rem;
  color: #444444;
  text-align: center;
}

#status a {
  color: inherit;
}

@media (max-width: 560px) {
  header {
    grid-template-columns: auto 1fr auto;
    gap: 0.55rem;
    padding-inline: 0.65rem;
  }

  header h1 {
    overflow: hidden;
    font-size: 0.9rem;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  header a {
    padding: 0.42rem 0.6rem;
    font-size: 0.82rem;
  }
}

@media print {
  header,
  #status {
    display: none;
  }

  body,
  #viewer {
    padding: 0;
    background: #ffffff;
  }

  .pdf-page {
    margin: 0;
    box-shadow: none;
    page-break-after: always;
  }
}