:root {
  color-scheme: light;
  --bg: #f7f4ee;
  --ink: #17201b;
  --muted: #637069;
  --panel: #fffdfa;
  --panel-strong: #ffffff;
  --line: #ddd7ca;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --accent-soft: #d8f3ee;
  --gloss: #6b4e16;
  --gloss-on-accent: #e9fffb;
  --shadow: 0 18px 44px rgb(23 32 27 / 12%);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

:root.dark {
  color-scheme: dark;
  --bg: #111816;
  --ink: #f3f0e9;
  --muted: #a8b3ad;
  --panel: #19231f;
  --panel-strong: #202d28;
  --line: #31413a;
  --accent: #5eead4;
  --accent-strong: #8cf4e4;
  --accent-soft: #153f3b;
  --gloss: #f6d884;
  --gloss-on-accent: #062521;
  --shadow: 0 18px 44px rgb(0 0 0 / 26%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

button {
  border: 0;
  color: inherit;
  font: inherit;
}

.app-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.topbar,
.lesson-meta,
.status-row,
.section-heading,
.lesson-nav,
.sentence-tools {
  display: flex;
  align-items: center;
}

.topbar {
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0 18px;
}

.eyebrow,
.level,
.source,
.status-label,
.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.eyebrow,
.level,
.status-label {
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 2px 0 0;
  font-size: clamp(1.55rem, 6vw, 2.35rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 4px 0 6px;
  font-size: 1.2rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.icon-button {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  cursor: pointer;
}

.lesson-meta {
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.source {
  line-height: 1.45;
}

.progress-ring {
  display: grid;
  width: 58px;
  height: 58px;
  flex: 0 0 58px;
  place-items: center;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--panel) 54%, transparent 55%),
    conic-gradient(var(--accent) var(--progress, 16.6%), var(--line) 0);
  color: var(--ink);
  font-weight: 800;
}

.practice-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.sentence-tools {
  gap: 8px;
  padding-bottom: 14px;
}

.tool-button {
  display: inline-flex;
  min-height: 42px;
  flex: 1 1 0;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
}

.tool-button.active {
  border-color: transparent;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 750;
}

.tool-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.speed-control {
  display: inline-grid;
  min-height: 42px;
  flex: 1 1 auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.speed-option {
  padding: 0 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 750;
}

.speed-option + .speed-option {
  border-left: 1px solid var(--line);
}

.speed-option.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.pause-control {
  display: grid;
  min-height: 42px;
  flex: 1 1 auto;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

.pause-control input {
  width: 100%;
  accent-color: var(--accent);
}

.pause-control strong {
  color: var(--accent-strong);
  font-size: 0.86rem;
}

.sentence-block {
  min-height: 280px;
  padding: 18px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--panel), color-mix(in srgb, var(--panel) 74%, var(--accent-soft)));
}

.french {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.35rem, 5vw, 2.05rem);
  line-height: 1.42;
}

.passage-line {
  margin: 0 0 14px;
}

.passage-line:last-child {
  margin-bottom: 0;
}

.phrase {
  display: inline-flex;
  min-height: 1.6em;
  flex-direction: column;
  justify-content: flex-start;
  margin: 0 0.06em 0.2em 0;
  padding: 0 0.1em;
  border-radius: 6px;
  cursor: pointer;
  scroll-margin-block: 120px;
  vertical-align: top;
  transition:
    background 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}

.phrase-text {
  display: block;
}

.phrase:hover .phrase-text {
  text-decoration: underline;
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.13em;
}

.phrase-gloss {
  display: none;
  max-width: 13rem;
  color: var(--gloss);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: 0.78rem;
  font-weight: 750;
  line-height: 1.18;
}

.phrase.speaking {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.phrase.speaking .phrase-gloss {
  color: var(--gloss-on-accent);
}

.phrase.repeat-target {
  background: var(--accent-soft);
  color: var(--accent-strong);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.phrase.speaking .phrase-gloss,
.phrase.repeat-target .phrase-gloss {
  display: block;
}

.quick-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding-top: 14px;
}

.status-row {
  justify-content: space-between;
  gap: 18px;
  padding-top: 14px;
}

.status-row p {
  margin: 2px 0 0;
}

.meter {
  width: 116px;
  height: 9px;
  flex: 0 0 116px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.meter span {
  display: block;
  width: 18%;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 220ms ease;
}

.lesson-nav {
  gap: 10px;
  margin: 14px 0 28px;
}

.primary-button,
.secondary-button {
  min-height: 48px;
  flex: 1 1 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 800;
}

.primary-button {
  background: var(--accent);
  color: #ffffff;
}

.secondary-button {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
}

.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.library {
  margin-top: 14px;
  padding-bottom: 18px;
}

.section-heading {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.library-list {
  display: grid;
  gap: 10px;
}

.library-item {
  display: grid;
  width: 100%;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  text-align: left;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.next-article-button {
  cursor: pointer;
}

.next-article-button:hover,
.next-article-button:focus-visible {
  border-color: var(--accent);
  outline: 0;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.library-item h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.library-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.tag {
  padding: 6px 8px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
}

@media (max-width: 430px) {
  .app-shell {
    padding-inline: 12px;
  }

  .lesson-meta {
    align-items: flex-start;
  }

  .sentence-block {
    min-height: 244px;
    padding: 16px;
  }

  .sentence-tools {
    display: grid;
    grid-template-columns: 1fr;
  }

  .quick-actions {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }
}