:root {
  --page-bg: #fffff8;
  --ink: #111;
  --muted: #6f6a60;
  --rule: #d8d1c3;
  --accent: #9f2f21;
  --accent-soft: #f8e6df;
  --mono: var(--font-family);
  --main-column: 55%;
  --note-offset: 110%;
  --note-width: 50%;
}

html {
  background-color: var(--page-bg);
  font-size: 15px;
}

.reader-app {
  box-sizing: content-box;
  display: block;
  width: 87.5%;
  max-width: 1400px;
  min-height: 100vh;
  margin: 0 auto;
  padding-left: 12.5%;
  overflow-x: hidden;
  background-color: var(--page-bg);
  color: var(--ink);
  font-family: var(--mono);
  line-height: 1.45;
  counter-reset: sidenote-counter;
}

.reader-app * {
  box-sizing: border-box;
  letter-spacing: 0;
}

.reader-app * + * {
  margin-top: 0;
}

.reader-app p {
  word-break: normal;
  hyphens: manual;
}

.topbar {
  position: relative;
  padding: 0 0 1rem;
}

.title-block {
  width: var(--main-column);
  min-width: 0;
}

.topbar h1 {
  margin-top: 4rem;
  margin-bottom: 1.5rem;
  font-size: 3.2rem;
  font-weight: 400;
  line-height: 1;
  overflow-wrap: anywhere;
}

.subtitle {
  display: block;
  margin-top: 1rem;
  margin-bottom: 1rem;
  font-size: 1.8rem;
  font-style: italic;
  line-height: 1;
}

.paper-author,
.paper-year,
.paper-url,
.paper-source {
  margin: 0.35rem 0;
  font-size: 1.1rem;
  line-height: 1.4;
}

.marginnote {
  position: relative;
  float: right;
  clear: right;
  width: var(--note-width);
  margin-top: 0.3rem;
  margin-right: -60%;
  margin-bottom: 0;
  font-size: 1.1rem;
  line-height: 1.3;
  vertical-align: baseline;
}

.paper-url {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.paper-url a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.12em;
}

input.margin-toggle {
  display: none;
}

label.margin-toggle:not(.sidenote-number) {
  display: none;
}

.margin-toggle[hidden] {
  display: none !important;
}

.subtitle[hidden],
.paper-author[hidden],
.paper-year[hidden],
.paper-url[hidden],
.paper-source[hidden],
.paper-intro[hidden] {
  display: none;
}

.paper-intro {
  margin-top: 2.1rem;
  margin-bottom: 1.4rem;
  font-size: 1.4rem;
  line-height: 2rem;
  overflow-wrap: anywhere;
}

.paper-intro p {
  margin-top: 1.4rem;
  margin-bottom: 1.4rem;
}

.toolbar {
  position: fixed;
  z-index: 10;
  top: 1rem;
  left: calc(12.5vw + (87.5vw * 0.605));
  display: flex;
  flex-wrap: wrap;
  width: calc(87.5vw * 0.275);
  max-width: 24rem;
  gap: 0.45rem;
  align-content: start;
  align-items: center;
  padding: 0.45rem 0;
  background: rgb(255 255 248 / 0.96);
  font-size: 0.78rem;
  line-height: 1.3;
}

button,
select,
input,
textarea {
  min-height: 2rem;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--page-bg);
  color: var(--ink);
  font: inherit;
}

button,
select {
  max-width: 100%;
  padding: 0 0.65rem;
}

button {
  cursor: pointer;
}

button:hover,
button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
}

button:disabled,
select:disabled {
  cursor: default;
  opacity: 0.45;
}

.text-button {
  border-color: transparent;
  color: var(--muted);
}

.mode-badge,
.note-total,
.page-left {
  color: var(--muted);
  font-size: 0.75rem;
}

.workspace {
  padding: 1rem 0 5rem;
}

.page-shell {
  position: relative;
  width: var(--main-column);
  margin: 0 0 3em;
  padding: 1rem 0;
}

.page-left {
  position: absolute;
  top: 1.25rem;
  right: calc(100% + 1.5rem);
  width: 4ch;
  font-size: 0.72rem;
  text-align: right;
  text-transform: uppercase;
}

.page-view {
  position: relative;
  width: fit-content;
  max-width: 100%;
  background: #fff;
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.16);
}

.page-view canvas {
  display: block;
  width: var(--page-width);
  max-width: 100%;
  height: auto;
}

.page-view.adding {
  cursor: crosshair;
}

.marker-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.marker,
.note-card strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-width: 1.5em;
  height: 1.5em;
  padding: 0 0.2em;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.7rem;
  line-height: 1;
}

.marker {
  position: absolute;
  margin: 0;
  transform: translate(-50%, -50%);
  background: transparent;
  font-family: inherit;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  pointer-events: auto;
}

.marker:hover,
.marker:focus-visible {
  background: var(--accent);
  color: var(--page-bg);
}

.page-notes {
  position: absolute;
  top: 1rem;
  left: var(--note-offset);
  width: var(--note-width);
  min-height: var(--page-height);
}

.note-card {
  position: absolute;
  left: 0;
  width: 100%;
  transform: translateY(-0.4rem);
  color: var(--ink);
  font-size: 1.1rem;
  line-height: 1.3;
}

.note-card button {
  display: block;
  width: 100%;
  min-height: 0;
  border: 0;
  padding: 0;
  color: inherit;
  text-align: left;
}

.note-card strong {
  margin-right: 0.5rem;
  vertical-align: 0.05em;
  font-weight: 400;
}

.status {
  width: var(--main-column);
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
  color: var(--muted);
}

.gallery {
  width: min(60ch, 100%);
  padding: 4rem 0 6rem;
}

.gallery-toolbar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.gallery-title {
  margin: 0 0 0.75rem;
  font-size: 2.6rem;
  font-weight: 400;
  line-height: 1;
}

.gallery-desc {
  margin: 0 0 2.5rem;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1.5;
}

.gallery-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.gallery-item {
  border-top: 1px solid var(--rule);
}

.gallery-item:last-child {
  border-bottom: 1px solid var(--rule);
}

.gallery-item a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 0;
  color: var(--ink);
  text-decoration: none;
}

.gallery-item a:hover .gallery-item-title {
  color: var(--accent);
}

.gallery-item-title {
  font-size: 1.3rem;
}

.gallery-item-meta {
  flex: none;
  color: var(--muted);
  font-size: 1rem;
}

.gallery-link {
  margin-right: 0.5rem;
  color: var(--muted);
  text-decoration: none;
}

.gallery-link:hover {
  color: var(--accent);
}

.dialog {
  width: min(54ch, calc(100vw - 4ch));
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 1.2rem;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--mono);
}

.dialog::backdrop {
  background: rgb(255 255 248 / 0.78);
}

.dialog-head,
.dialog-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.dialog-head {
  margin-bottom: 1rem;
}

.dialog-head h2 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 400;
}

#note-form label,
.paper-fields label {
  color: var(--muted);
}

#note-text,
.paper-fields input,
.paper-fields textarea {
  width: 100%;
  font-family: var(--mono);
}

#note-text,
.paper-fields textarea {
  resize: vertical;
  padding: 0.65rem;
}

.paper-fields {
  display: grid;
  grid-template-columns: 10ch minmax(0, 1fr);
  gap: 0.6rem 1rem;
  align-items: center;
}

.paper-fields input {
  padding: 0 0.55rem;
}

.dialog-actions {
  margin-top: 1rem;
  justify-content: end;
}

@media (max-width: 760px) {
  .reader-app {
    width: 84%;
    padding-right: 8%;
    padding-left: 8%;
  }

  .topbar {
    display: flex;
    flex-direction: column;
  }

  .title-block,
  .paper-intro,
  .workspace,
  .page-shell,
  .status {
    width: 100%;
  }

  label.margin-toggle:not(.sidenote-number) {
    display: inline;
  }

  .marginnote {
    display: none;
  }

  .margin-toggle:checked + .marginnote {
    position: relative;
    left: 1rem;
    display: block;
    float: left;
    clear: both;
    width: 95%;
    margin: 1rem 2.5%;
    vertical-align: baseline;
  }

  .title-block {
    order: 1;
  }

  .toolbar {
    position: fixed;
    order: 2;
    z-index: 10;
    right: 8%;
    bottom: 1rem;
    left: 8%;
    display: grid;
    grid-template-columns: 1fr;
    width: auto;
    max-width: none;
    max-height: 38vh;
    margin-top: 0;
    overflow: auto;
    border-top: 1px solid var(--rule);
    padding: 0.75rem 0;
  }

  .toolbar select,
  .toolbar button {
    width: 100%;
  }

  .page-left {
    position: static;
    width: auto;
    text-align: left;
  }

  .page-notes {
    position: static;
    width: 95%;
    min-height: 0;
    margin: 1rem 2.5%;
  }

  .workspace {
    padding-bottom: 17rem;
  }

  .note-card {
    position: static;
    transform: none;
    margin-top: 1rem;
  }

  .paper-fields {
    grid-template-columns: 1fr;
  }
}