@font-face {
  font-family: 'Gentium';
  src: url('fonts/Gentium-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Gentium';
  src: url('fonts/Gentium-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Gentium Book';
  src: url('fonts/GentiumBook-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Charis';
  src: url('fonts/Charis-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Doulos SIL';
  src: url('fonts/DoulosSIL-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Andika';
  src: url('fonts/Andika-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fbfaf7;
  --ink: #22201d;
  --accent: #9a4f28;
  --muted: #9b958c;
  --border: #e6e2da;
  --output-ink: #6b4b2e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1815;
    --ink: #eae5dc;
    --accent: #e0a271;
    --muted: #837c72;
    --border: #33302a;
    --output-ink: #d9bb95;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Gentium', Georgia, serif;
  line-height: 1.5;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  margin-bottom: 2rem;
}

h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--muted);
}

h1 abbr {
  text-decoration: none;
  cursor: help;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

select {
  font: inherit;
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 11rem;
  text-overflow: ellipsis;
  padding: 0.4rem 1.2em 0.4rem 0;
  border: none;
  background: transparent;
  cursor: pointer;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
                    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 0.45em top 55%, right 0.15em top 55%;
  background-size: 0.3em 0.3em;
  background-repeat: no-repeat;
}

select:hover,
select:focus {
  color: var(--accent);
  outline: none;
}

.options {
  position: relative;
  font-size: 0.9rem;
}

.options summary {
  color: var(--muted);
  cursor: pointer;
  padding: 0.4rem 0;
  list-style: none;
}

.options summary::-webkit-details-marker {
  display: none;
}

.options summary::after {
  content: "";
  display: inline-block;
  margin-left: 0.45em;
  border: 0.3em solid transparent;
  border-top-color: currentColor;
  transform: translateY(0.25em);
}

.options[open] summary,
.options summary:hover {
  color: var(--accent);
}

.panel {
  position: absolute;
  z-index: 10;
  top: 100%;
  right: 0;
  min-width: 15rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  box-shadow: 0 6px 24px rgb(0 0 0 / 0.09);
}

.panel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.2rem 0;
  color: var(--ink);
}

.panel-row select {
  color: var(--ink);
}

.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  color: var(--muted);
  cursor: pointer;
}

.check input {
  accent-color: var(--accent);
  margin: 0;
}

.check {
  margin-top: 0.5rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border);
}

.check.subsequent {
  padding-top: 0;
  border-top: none;
}

textarea {
  display: block;
  width: 100%;
  min-height: 3rem;
  overflow: hidden;
  resize: none;
  font: inherit;
  font-size: 1.15rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--ink);
}

textarea:focus {
  outline: none;
}

output {
  display: block;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--output-font, 'Gentium'), Georgia, serif;
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--output-ink);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

output b {
  font-weight: 400;
}

output span[title]:hover {
  color: var(--accent);
}

/* θ is drawn at ascender height and towers over neighbouring lowercase. Gentium's
   small-cap alternate is shorter but reshapes it into a capital-looking Θ, so scale
   the true glyph down instead. */
output .theta {
  font-size: 0.86em;
}

output .primary {
  color: var(--accent);
  font-weight: 700;
}

output .secondary {
  color: var(--accent);
  opacity: 0.55;
}

@media (max-width: 34rem) {
  main {
    padding: 2rem 1.1rem 3rem;
  }

  h1 {
    margin-bottom: 1.25rem;
  }

  .controls {
    gap: 0.15rem 1rem;
  }

  select {
    max-width: 9.5rem;
  }

  output {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
  }
}

.status,
.error {
  font-family: 'Gentium', Georgia, serif;
  font-size: 0.95rem;
  color: var(--muted);
}

.error {
  color: #b3403a;
}