:root {
  --sheet: #fcfcfa;
  --text: #2b2b2e;
  --faint: #7a7a80;
  --line: #e2e2dc;
  --mark: #2f5d62;
  --tint: #f2f3ef;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sheet: #151618;
    --text: #e6e4df;
    --faint: #8e8c88;
    --line: #2c2e31;
    --mark: #7fb4b6;
    --tint: #1d1f21;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--sheet);
  color: var(--text);
  font-family: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  font-size: 17.5px;
  line-height: 1.7;
}

.sheet {
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 1.4rem;
}

/* шапка */

.masthead {
  padding: 2.4rem 0 1.4rem;
}

.masthead .sheet {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.8rem 1.6rem;
}

.sign {
  text-decoration: none;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}

.sign svg { display: block; flex: none; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: lowercase;
}

.tabs a {
  color: var(--faint);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

.tabs a:hover { color: var(--text); }
.tabs a.on { color: var(--text); border-bottom-color: var(--mark); }

.rule {
  height: 1px;
  background: var(--line);
  margin: 0 0 2.6rem;
}

/* текст */

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 1rem;
  font-weight: 600;
}

h2 {
  font-size: 1.25rem;
  margin: 2.8rem 0 0.8rem;
  font-weight: 600;
}

p { margin: 0 0 1.1rem; }

a { color: var(--mark); }

.opening {
  font-size: 1.14rem;
  color: var(--text);
  margin-bottom: 2rem;
}

.stamp {
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 0.5rem;
}

/* выписка */

.entry {
  border-left: 2px solid var(--line);
  padding: 0.1rem 0 0.1rem 1.5rem;
  margin: 0 0 2.6rem;
}

.entry .source {
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  color: var(--faint);
  margin-bottom: 0.7rem;
  letter-spacing: 0.02em;
}

.entry .quoted {
  font-size: 1.06rem;
  margin-bottom: 0.9rem;
}

.entry .mine {
  font-size: 0.97rem;
  color: var(--faint);
  margin-bottom: 0;
}

.entry:hover { border-left-color: var(--mark); }

/* полка */

.shelf {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}

.shelf li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.shelf .what { flex: 1 1 16rem; }

.shelf .state {
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  color: var(--faint);
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* прочее */

.aside {
  background: var(--tint);
  border-radius: 2px;
  padding: 1rem 1.2rem;
  font-size: 0.96rem;
  margin: 2.2rem 0;
}

.aside p:last-child { margin-bottom: 0; }

.pairs {
  margin: 1.6rem 0;
  font-size: 0.99rem;
}

.pairs div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.pairs dt {
  flex: 0 0 8.5rem;
  color: var(--faint);
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.84rem;
}

.pairs dd { margin: 0; flex: 1 1 14rem; }

.closing {
  margin-top: 4rem;
  padding: 1.4rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-family: system-ui, "Segoe UI", sans-serif;
  font-size: 0.82rem;
}

.closing p { margin: 0 0 0.35rem; }

.empty {
  padding: 3.5rem 0 2rem;
}

.empty svg { margin-bottom: 1.6rem; }

@media (max-width: 32rem) {
  body { font-size: 16.5px; }
  h1 { font-size: 1.7rem; }
  .pairs dt { flex: 1 1 100%; }
}