:root {
  --bg: #f5efe3;
  --panel: rgba(255, 251, 245, 0.94);
  --panel-strong: #fffdf9;
  --ink: #2f271f;
  --muted: #77695a;
  --line: #d8cab8;
  --accent: #a14d2e;
  --accent-soft: #f4dfd3;
  --good: #21653e;
  --good-soft: #dff1e7;
  --bad: #9d2f2f;
  --bad-soft: #f8dfdf;
  --shadow: 0 20px 40px rgba(66, 45, 28, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(161, 77, 46, 0.14), transparent 28%),
    linear-gradient(180deg, #f7f2ea 0%, #eee2d1 100%);
}

.auth-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(47, 39, 31, 0.32);
  backdrop-filter: blur(8px);
  z-index: 20;
}

.auth-overlay.visible {
  display: grid;
}

.auth-card {
  width: min(92vw, 420px);
  padding: 1.4rem;
  border-radius: 24px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.auth-card h2 {
  margin: 0 0 0.5rem;
}

button,
input,
select {
  font: inherit;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: end;
  padding: 2.5rem clamp(1rem, 3vw, 2.5rem) 1.5rem;
}

.header-side {
  display: grid;
  gap: 0.85rem;
  justify-items: end;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: end;
  align-items: center;
}

.user-chip {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.language-toggle {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}

.site-header h1,
.sidebar h2,
.section-heading h2,
.hero h2 {
  margin: 0;
}

.eyebrow,
.section-label {
  margin: 0 0 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.header-copy,
.muted {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.header-copy {
  max-width: 38rem;
}

.layout {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: 1.25rem;
  padding: 0 clamp(1rem, 3vw, 2.5rem) 2rem;
}

.content,
.grid {
  display: grid;
  gap: 1.25rem;
}

.grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
}

.card {
  background: var(--panel);
  border: 1px solid rgba(216, 202, 184, 0.85);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.sidebar,
.hero,
.insights-card,
.controls-card,
.chapter-card {
  padding: 1.2rem;
}

.sidebar-heading,
.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
}

.chapter-list {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.chapter-button,
.secondary-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--ink);
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.chapter-button {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding: 0.75rem 1rem;
  text-align: left;
}

.chapter-button-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--fill-width, 0%);
  background: linear-gradient(90deg, rgba(194, 235, 205, 0.95), rgba(167, 224, 182, 0.95));
  pointer-events: none;
}

.chapter-button-content {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.chapter-button-meta {
  font-size: 0.88rem;
  color: var(--muted);
}

.chapter-button:hover,
.chapter-button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible,
.quiz-input:hover,
.quiz-input:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.chapter-button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff8f1;
}

.chapter-button.active .chapter-button-fill {
  background: linear-gradient(90deg, rgba(194, 235, 205, 0.24), rgba(167, 224, 182, 0.24));
}

.chapter-button.active .chapter-button-meta {
  color: rgba(255, 248, 241, 0.85);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.overall-progress {
  margin-top: 1rem;
}

.overall-progress-copy {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0.45rem;
  color: var(--muted);
}

.overall-progress-track {
  width: 100%;
  height: 16px;
  border-radius: 999px;
  background: rgba(216, 202, 184, 0.55);
  overflow: hidden;
}

.overall-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(194, 235, 205, 0.98), rgba(154, 220, 170, 0.98));
  transition: width 180ms ease;
}

.stat {
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.stat-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.recommendations {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.recommendation-item {
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.recommendation-item strong {
  display: block;
  margin-bottom: 0.3rem;
}

.field {
  display: grid;
  gap: 0.45rem;
  margin: 1rem 0;
}

.field span {
  color: var(--muted);
  font-size: 0.92rem;
}

.field input {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
}

.field select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
}

.secondary-button {
  padding: 0.8rem 1rem;
}

.toggle-button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff8f1;
}

.hero-actions {
  margin-top: 1rem;
}

.chapter-quiz {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.quiz-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.verse {
  padding: 0.95rem 1rem;
  border-radius: 20px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  line-height: 2.2;
}

.verse.hidden {
  display: none;
}

.verse-number {
  display: inline-block;
  min-width: 2rem;
  margin-right: 0.35rem;
  color: var(--accent);
  font-weight: 700;
}

.kept-word {
  color: var(--ink);
}

.quiz-word {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  vertical-align: middle;
}

.quiz-input {
  width: calc(var(--chars, 5) * 0.72rem + 1.25rem);
  min-width: 3.5rem;
  max-width: 10rem;
  padding: 0.38rem 0.5rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.quiz-input.correct {
  border-color: rgba(33, 101, 62, 0.45);
  background: var(--good-soft);
  color: var(--good);
}

.quiz-input.incorrect {
  border-color: rgba(157, 47, 47, 0.45);
  background: var(--bad-soft);
  color: var(--bad);
}

.answer-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

.answer-meta.correct {
  color: var(--good);
}

.answer-meta.incorrect {
  color: var(--bad);
}

.quiz-input:disabled {
  cursor: default;
  opacity: 1;
}

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.leaderboard-row.current-user {
  border-color: rgba(154, 220, 170, 0.75);
  background: linear-gradient(90deg, rgba(194, 235, 205, 0.72), rgba(167, 224, 182, 0.62));
}

.leaderboard-rank {
  color: var(--muted);
  font-size: 0.88rem;
}

.leaderboard-status {
  margin-left: 0.4rem;
}

@media (max-width: 960px) {
  .layout,
  .grid,
  .quiz-toolbar {
    grid-template-columns: 1fr;
  }

  .site-header {
    flex-direction: column;
    align-items: start;
  }

  .header-side {
    justify-items: start;
  }

  .header-actions,
  .language-toggle,
  .user-chip {
    justify-content: start;
  }
}