/* components — button, card, progress, dialog, reward, prompt. */

/* Button */
.btn {
  border: none;
  border-radius: var(--radius);
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: default; transform: none; }
.btn--primary { background: var(--c-primary); color: var(--c-primary-ink); box-shadow: var(--shadow); }
.btn--ghost { background: var(--c-surface); color: var(--c-ink); box-shadow: var(--shadow); }
.btn__icon { font-size: 1.1em; }

/* Card */
.card {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  position: relative;
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}
.card--clickable { cursor: pointer; }
.card--clickable:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(31,42,68,0.16); }
.card--locked { opacity: 0.55; }
.card--locked.card--clickable { cursor: default; }
.card__title { font-size: 1.1rem; }
.card__badge {
  position: absolute;
  top: 12px; right: 14px;
  background: var(--c-correct);
  color: #fff;
  border-radius: 999px;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  font-size: 0.9rem; font-weight: 800;
}
.chapter-card__sub { color: var(--c-ink-soft); font-size: 0.9rem; margin: 6px 0; }
.chapter-card__stars { font-size: 1.15rem; color: var(--c-accent); letter-spacing: 2px; }

/* Progress */
.progress {
  height: 14px;
  background: #e3e9f4;
  border-radius: 999px;
  overflow: hidden;
  max-width: 460px;
  margin: 0 auto;
}
.progress__fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-primary), var(--c-correct));
  border-radius: 999px;
  transition: width 0.25s ease;
}

/* Prompt (play area text) */
.prompt {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  max-width: 720px;
}
.prompt__char {
  display: inline-grid;
  place-items: center;
  min-width: 1.2em;
  padding: 4px 6px;
  border-radius: 8px;
  color: var(--c-ink-soft);
  background: transparent;
}
.prompt__char--space { min-width: 2em; }
.prompt__char.is-done { color: var(--c-correct); }
.prompt__char.is-active {
  color: var(--c-primary-ink);
  background: var(--c-primary);
  box-shadow: 0 4px 12px rgba(67,97,238,0.4);
}

/* Overlay + Dialog + Reward */
.overlay {
  position: fixed; inset: 0;
  background: rgba(31,42,68,0.45);
  display: grid; place-items: center;
  z-index: 100;
  padding: 20px;
}
.dialog, .reward {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  padding: 26px;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  text-align: center;
}
.dialog__title { margin-bottom: 12px; }
.dialog__actions, .reward__actions {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-top: 20px;
}

/* Settings */
.settings { display: flex; flex-direction: column; gap: 12px; text-align: left; }
.setting-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; background: var(--c-bg); border-radius: var(--radius);
  cursor: pointer;
}
.setting-row input { width: 22px; height: 22px; }

/* Reward */
.reward { position: relative; overflow: hidden; }
.reward__confetti { position: absolute; inset: 0; pointer-events: none; }
.reward__praise { color: var(--c-primary); font-size: 1.6rem; }
.reward__stars { font-size: 3rem; margin: 10px 0; letter-spacing: 8px; }
.reward__star { color: #d5dcec; }
.reward__star.is-on { color: var(--c-accent); }
.reward__stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 8px; margin: 16px 0;
}
.reward__stat { background: var(--c-bg); border-radius: var(--radius); padding: 10px 4px; }
.reward__stat-val { font-size: 1.3rem; font-weight: 800; color: var(--c-ink); }
.reward__stat-label { font-size: 0.75rem; color: var(--c-ink-soft); }