:root {
  --bg: #f4efe6;
  --card: #fffdf8;
  --ink: #23201b;
  --ink-soft: #6b6357;
  --rule: #e3dccd;
  --accent: #8a5a2b;
  --accent-ink: #fff;
  --pop-bg: #2b2621;
  --pop-ink: #f6f1e7;
  --mark: #efe4cf;
  --measure: 38rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1714;
    --card: #221e1a;
    --ink: #ece5d8;
    --ink-soft: #a79c89;
    --rule: #352f28;
    --accent: #d69a5c;
    --accent-ink: #1a1714;
    --pop-bg: #f6f1e7;
    --pop-ink: #23201b;
    --mark: #3a3126;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  line-height: 1.75;
  font-size: 1.15rem;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.app-header {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.4rem 1.25rem 0.4rem;
}

.app-header h1 {
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  margin: 0;
}

.status {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-family: system-ui, sans-serif;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

.filters button {
  font: inherit;
  font-family: system-ui, sans-serif;
  font-size: 0.85rem;
  padding: 0.3rem 0.7rem;
  min-height: 40px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.filters button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.feed {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0.5rem 1.25rem 4rem;
}

.placeholder {
  color: var(--ink-soft);
  font-style: italic;
}

article.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1.3rem 1.35rem 1.5rem;
  margin: 1.5rem 0;
}

article.card h2 {
  font-size: 1.3rem;
  line-height: 1.35;
  margin: 0 0 0.35rem;
}

.card-meta {
  font-family: system-ui, sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin-bottom: 0.9rem;
}

.card-body {
  margin: 0;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.card-body .w {
  cursor: pointer;
  border-radius: 3px;
  transition: background-color 0.12s ease;
}

.card-body .w:hover { background: var(--mark); }
.card-body .w.active { background: var(--accent); color: var(--accent-ink); }

.popover {
  position: absolute;
  z-index: 20;
  max-width: min(20rem, 80vw);
  background: var(--pop-bg);
  color: var(--pop-ink);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  font-family: system-ui, sans-serif;
  font-size: 0.95rem;
  line-height: 1.4;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
}

.popover .term { font-weight: 600; }
.popover .base { display: block; margin-top: 0.15rem; font-size: 0.82rem; opacity: 0.75; }
.popover .miss { opacity: 0.7; font-style: italic; }

/* --- text-to-speech ------------------------------------------------- */

.reader-tempo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.7rem;
  font-family: system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.reader-tempo select {
  font: inherit;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--card);
  color: var(--ink);
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

button.speak,
button.speak-stop {
  font-family: system-ui, sans-serif;
  font-size: 0.82rem;
  padding: 0.4rem 0.9rem;
  min-height: 40px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

button.speak[data-state="playing"],
button.speak[data-state="paused"] {
  border-color: var(--accent);
  color: var(--accent);
}

button.speak-stop { padding: 0.4rem 0.7rem; }
button.speak[data-state="idle"] ~ button.speak-stop { display: none; }

.tts-hint {
  flex-basis: 100%;
  font-family: system-ui, sans-serif;
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.sent.speaking {
  background: var(--mark);
  border-radius: 2px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}