/* ==========================================================================
   TYPING TURBO — academy.css
   Keyboard Academy: lesson map, lesson stage, drills, rewards.
   ========================================================================== */

.academy-screen { background: radial-gradient(100% 80% at 50% 0%, #14183a 0%, #05060d 70%); }

.academy-scroll { flex: 1 1 auto; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 0 clamp(12px, 3vw, 28px) calc(24px + env(safe-area-inset-bottom)); }

/* ---------------------------------------------------------------- lesson groups */

.group { margin-top: 18px; }
.group__head {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(139, 107, 255, 0.22), transparent 70%);
  border: 1px solid var(--stroke);
  margin-bottom: 10px;
}
.group__icon { font-size: 1.4rem; }
.group__title { font-weight: 900; letter-spacing: 0.06em; text-transform: uppercase; font-size: 0.95rem; }
.group__desc { font-size: 0.76rem; color: var(--txt-dim); }

.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: 10px; }

.lesson-card {
  position: relative;
  padding: 12px;
  border-radius: var(--radius);
  border: 2px solid var(--stroke);
  background: rgba(255, 255, 255, 0.045);
  text-align: left;
  cursor: pointer;
  transition: transform 0.16s var(--ease-out), border-color 0.16s, box-shadow 0.16s;
  display: flex; flex-direction: column; gap: 6px;
}
.lesson-card:hover { transform: translateY(-3px); border-color: var(--stroke-strong); }
.lesson-card.is-locked { opacity: 0.5; cursor: not-allowed; filter: saturate(0.4); }
.lesson-card.is-locked:hover { transform: none; border-color: var(--stroke); }
.lesson-card.is-done { border-color: rgba(60, 233, 123, 0.45); }
.lesson-card.is-next { box-shadow: 0 0 0 3px rgba(34, 224, 255, 0.22), var(--shadow); border-color: var(--cyan); }
.lesson-card__no { font-size: 0.64rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--txt-faint); font-weight: 900; }
.lesson-card__name { font-weight: 900; font-size: 0.94rem; line-height: 1.15; }
.lesson-card__keys { display: flex; gap: 4px; flex-wrap: wrap; }
.lesson-key {
  min-width: 24px; padding: 2px 6px;
  border-radius: 6px; text-align: center;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--stroke);
  font-family: var(--mono); font-size: 0.76rem; font-weight: 800;
}
.lesson-card__foot { margin-top: auto; display: flex; align-items: center; gap: 8px; }
.lesson-card__lock { position: absolute; top: 10px; right: 10px; font-size: 1rem; opacity: 0.8; }

/* ---------------------------------------------------------------- lesson stage */

.lesson-stage {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(6px, 1.6vh, 16px);
  padding: clamp(6px, 1.6vh, 16px) 10px 6px;
  overflow: hidden;
}

.lesson-topbar {
  width: min(820px, 100%);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.lesson-topbar .grow { min-width: 60px; }

.drill-box {
  width: min(820px, 100%);
  padding: clamp(10px, 2vh, 20px);
  border-radius: var(--radius-lg);
  background: rgba(6, 8, 18, 0.78);
  border: 1px solid var(--stroke-strong);
  box-shadow: var(--shadow);
  text-align: center;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.drill-box.is-good { border-color: rgba(60, 233, 123, 0.75); box-shadow: 0 0 30px rgba(60, 233, 123, 0.28), var(--shadow); }
.drill-box.is-bad { border-color: rgba(255, 77, 94, 0.85); box-shadow: 0 0 30px rgba(255, 77, 94, 0.3), var(--shadow); animation: shake 0.3s; }

.drill-text {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 2px;
  font-family: var(--mono);
}
.drill-text .wchar { font-size: clamp(1.7rem, 7vw, 3.2rem); }

.drill-instruction {
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--txt-faint); font-weight: 900; margin-bottom: 8px;
}

.drill-tip {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--txt-dim);
  display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap;
}

/* feedback burst on correct key */
.drill-ring { position: absolute; inset: -6px; border-radius: var(--radius-lg); border: 2px solid var(--green); opacity: 0; pointer-events: none; }
.drill-box.is-good .drill-ring { animation: ringOut 0.5s var(--ease-out); }
@keyframes ringOut { 0% { opacity: 0.9; transform: scale(0.98); } 100% { opacity: 0; transform: scale(1.05); } }

.lesson-stats {
  width: min(820px, 100%);
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
}
.lesson-stats .hud-card { min-width: 84px; text-align: center; }
.lesson-stats .hud-card__value { font-size: 1.15rem; }

.academy-controls {
  width: min(860px, 100%);
  display: flex; flex-direction: column; gap: 8px; align-items: center;
}

/* Free practice / accuracy challenge banner */
.challenge-banner {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px; border-radius: 999px;
  background: rgba(255, 210, 63, 0.12);
  border: 1px solid rgba(255, 210, 63, 0.45);
  color: #ffe79a; font-size: 0.78rem; font-weight: 800;
}
.challenge-banner.is-ok { background: rgba(60, 233, 123, 0.12); border-color: rgba(60, 233, 123, 0.45); color: #b6ffd3; }

/* ---------------------------------------------------------------- lesson complete */

.reward-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 12px 0; }
.reward {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 10px 16px; border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--stroke);
  min-width: 92px;
}
.reward__icon { font-size: 1.5rem; }
.reward__val { font-weight: 900; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.reward__label { font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--txt-faint); font-weight: 800; }
.reward--gold { border-color: rgba(255, 210, 63, 0.5); background: rgba(255, 210, 63, 0.08); }

.finger-callout {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--stroke);
  font-size: 0.76rem; font-weight: 800;
}
.finger-callout i { width: 12px; height: 12px; border-radius: 50%; }

@media (max-width: 620px) {
  .lesson-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .hands svg { width: clamp(100px, 30vw, 150px); }
}
@media (max-height: 560px) {
  .hands { display: none; }
}