:root {
  --bg: #f7f4ee;
  --paper: #fffdf8;
  --ink: #1f2430;
  --muted: #6a6f7a;
  --line: #ded5c5;
  --accent: #9b5d22;
  --accent-soft: #f3e3d0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 10%, #fff6e8 0 18%, transparent 19%),
    radial-gradient(circle at 90% 90%, #f1efe8 0 20%, transparent 21%),
    var(--bg);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 86%, #ffffff 14%);
  backdrop-filter: blur(5px);
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
}

.subtitle {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.controls {
  display: flex;
  gap: 0.75rem;
  align-items: end;
}

label {
  display: grid;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.chapter-nav {
  display: flex;
  gap: 0.3rem;
  align-items: flex-end;
}

.nav-btn {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #fff;
  color: var(--accent);
  padding: 0.44rem 0.7rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.nav-btn:hover:not(:disabled) {
  background: var(--accent-soft);
}

.nav-btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.debug-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #fff;
  height: fit-content;
}

.debug-toggle input {
  margin: 0;
}

select {
  min-width: 9rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: #fff;
  padding: 0.45rem 0.5rem;
  color: var(--ink);
}

main {
  width: min(1250px, 96vw);
  margin: 1rem auto 2rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--paper);
  padding: 0.65rem 0.85rem;
  box-shadow: 0 4px 18px rgba(15, 20, 30, 0.04);
}

#statusText {
  margin: 0;
  color: var(--muted);
}

.viewer {
  margin-top: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--paper);
  padding: 0.9rem;
}

.chapter-title {
  margin: 0.25rem 0 1rem;
  color: var(--accent);
  font-size: 1.1rem;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 0.55rem;
}

.section-heading {
  margin: 1rem 0 0.5rem;
  padding: 0.35rem 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: #5a3a15;
  background: #f6ead9;
  border-left: 3px solid #c0884a;
  border-radius: 0.35rem;
}

.verse-row {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.7rem;
  margin-bottom: 0.55rem;
  align-items: start;
}

.verse-num {
  position: sticky;
  top: 4.6rem;
  text-align: right;
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 700;
  padding-top: 0.25rem;
}

.tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.24rem 0.34rem;
}

.token {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-width: 2.5ch;
  padding: 0.12rem 0.28rem;
  border-radius: 0.38rem;
}

.token:hover {
  background: var(--accent-soft);
}

.source {
  font-family: "Times New Roman", Georgia, serif;
  color: #2b5f8d;
  font-size: 1.15rem;
  line-height: 1.2;
}

.target {
  font-size: 1rem;
  line-height: 1.25;
}

.target-only {
  display: inline-flex;
  align-items: flex-end;
  margin: 0 0.08rem;
  color: #37414f;
}

body.hide-english .target,
body.hide-english .target-only {
  display: none;
}

body.hide-english .token {
  min-width: 0;
  padding: 0.08rem 0.16rem;
}

body.hide-english .source {
  font-size: 1.35rem;
  line-height: 1.25;
}

body.debug-mode .token[data-token-type="rb"] {
  outline: 1px dashed #2b5f8d;
  outline-offset: 1px;
}

body.debug-mode .target-only[data-token-type="txt"] {
  background: #ffe7cb;
  border: 1px solid #e5b178;
  border-radius: 0.33rem;
  padding: 0.08rem 0.24rem;
}

body.debug-mode .target-only[data-token-type="txt"]::before {
  content: "TXT";
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  margin-right: 0.22rem;
  color: #865118;
}

@media (max-width: 820px) {
  .topbar {
    align-items: stretch;
  }

  .controls {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .debug-toggle {
    grid-column: span 2;
    justify-content: center;
  }

  select {
    min-width: 0;
    width: 100%;
  }

  .verse-row {
    grid-template-columns: 2.2rem 1fr;
  }

  .target {
    font-size: 0.95rem;
  }
}