/* Lesson Card Component */
.lesson-card {
  position: relative;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing-smooth);
  transform-style: preserve-3d;
  overflow: hidden;
}

.lesson-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--easing-smooth);
  z-index: -1;
}

.lesson-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-glow);
}

.lesson-card:hover::before {
  opacity: 0.1;
}

.lesson-card:active {
  transform: translateY(-4px) scale(0.98);
}

.lesson-card__emoji {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.lesson-card__title {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.lesson-card__description {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.lesson-card__stats {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.lesson-card__stat {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
}

/* Progress Component */
.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress-bar__fill {
  height: 100%;
  background: var(--gradient-success);
  border-radius: 999px;
  transition: width var(--duration-slow) var(--easing-smooth);
  position: relative;
}

.progress-bar__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
  min-height: 44px;
  min-width: 44px;
  text-decoration: none;
  user-select: none;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-success {
  background: var(--gradient-success);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn-large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1.25rem;
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.badge-success {
  background: var(--color-success);
}

.badge-warning {
  background: #fbbf24;
}

/* Star Rating */
.stars {
  display: flex;
  gap: var(--space-sm);
}

.star {
  font-size: 2rem;
  opacity: 0;
  transform: scale(0) rotate(-180deg);
  animation: starAppear var(--duration-slow) var(--easing-spring) forwards;
}

.star:nth-child(1) {
  animation-delay: 0ms;
}
.star:nth-child(2) {
  animation-delay: 200ms;
}
.star:nth-child(3) {
  animation-delay: 400ms;
}

@keyframes starAppear {
  to {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

/* Phoneme Slot */
.phoneme-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  height: 80px;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 3px dashed rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.1);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  transition: all var(--duration-fast) var(--easing-smooth);
}

.phoneme-slot.filled {
  border-style: solid;
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.2);
}

.phoneme-slot.correct {
  border-color: var(--color-success);
  background: var(--gradient-success);
  animation: pulse var(--duration-slow) var(--easing-smooth);
}

.phoneme-slot.error {
  border-color: var(--color-error);
  background: var(--gradient-error);
  animation: shake var(--duration-slow) var(--easing-smooth);
}

/* Phoneme Button */
.phoneme-btn {
  min-width: 60px;
  height: 60px;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  border: none;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
  box-shadow: var(--shadow-sm);
}

.phoneme-btn:hover:not(:disabled) {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
  background: var(--color-white);
}

.phoneme-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.phoneme-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Word Display */
.word-display {
  text-align: center;
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  margin-bottom: var(--space-xl);
  position: relative;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.word-display__emoji {
  font-size: 6rem;
  display: block;
  margin-bottom: var(--space-md);
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.2));
  transform: translateZ(0); /* Hardware accel */
}

.word-display__translation {
  font-size: 2rem;
  color: var(--color-white);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.word-display__transcription {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  font-family: "Courier New", monospace;
  background: rgba(0, 0, 0, 0.2);
  display: inline-block;
  padding: 0.2rem 0.8rem;
  border-radius: var(--radius-sm);
}

/* Audio Button */
.btn-audio {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}

.btn-audio:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-audio:active {
  transform: scale(0.95);
}

/* Dashboard Stats */
.dashboard {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}

.dashboard__title {
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.dashboard__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-lg);
}

.stat-card {
  text-align: center;
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.stat-card__value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  display: block;
  margin-bottom: var(--space-sm);
}

.stat-card__label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

/* Results Page */
.results {
  text-align: center;
  padding: var(--space-2xl);
}

.results__score {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-white);
  margin: var(--space-xl) 0;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.results__message {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-xl);
}

.results__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-2xl);
}

/* Secrets Banner */
.secrets-banner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(255, 183, 77, 0.2) 0%,
    rgba(255, 111, 0, 0.2) 100%
  );
  border: 1px solid rgba(255, 183, 77, 0.3);
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing-smooth);
  margin-bottom: var(--space-xl);
  backdrop-filter: var(--backdrop-blur);
}

.secrets-banner:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(255, 152, 0, 0.3);
  background: linear-gradient(
    135deg,
    rgba(255, 183, 77, 0.3) 0%,
    rgba(255, 111, 0, 0.3) 100%
  );
}

.secrets-banner:active {
  transform: translateY(-2px) scale(0.98);
}

.secrets-banner__icon {
  font-size: 3rem;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.secrets-banner__content {
  flex: 1;
}

.secrets-banner__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.secrets-banner__subtitle {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.secrets-banner__arrow {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.6);
  transition: transform var(--duration-fast) var(--easing-smooth);
}

.secrets-banner:hover .secrets-banner__arrow {
  transform: translateX(4px);
  color: var(--color-white);
}

/* Secrets Page */
.secrets-page {
  padding: var(--space-xl) 0;
}

.secrets-page__header {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.secrets-page__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-white);
}

.secrets-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Secret Card Accordion */
.secret-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--easing-smooth);
  animation: fadeIn var(--duration-slow) var(--easing-smooth) both;
}

.secret-card:hover {
  box-shadow: var(--shadow-glow);
}

.secret-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  cursor: pointer;
  transition: background var(--duration-fast) var(--easing-smooth);
  user-select: none;
}

.secret-card__header:hover {
  background: rgba(255, 255, 255, 0.08);
}

.secret-card__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9800 0%, #ff6f00 100%);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.3);
}

.secret-card__emoji {
  font-size: 1.75rem;
  flex-shrink: 0;
}

.secret-card__title {
  flex: 1;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-white);
}

.secret-card__toggle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.5);
  transition: transform var(--duration-normal) var(--easing-smooth);
  flex-shrink: 0;
}

.secret-card.open .secret-card__toggle {
  transform: rotate(180deg);
  color: #ff9800;
}

.secret-card__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--easing-smooth),
              padding var(--duration-slow) var(--easing-smooth);
  padding: 0 var(--space-xl);
}

.secret-card.open .secret-card__body {
  max-height: 2000px;
  padding: 0 var(--space-xl) var(--space-xl);
}

/* Interactive Sound Badges - Always Visible Wrapper */
.secret-card__top {
  display: flex;
  flex-direction: column;
}

.secret-card__sounds {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: 0 var(--space-xl) var(--space-md);
}

.secret-card__sound {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 152, 0, 0.2) 0%, rgba(255, 111, 0, 0.3) 100%);
  border: 1px solid rgba(255, 152, 0, 0.4);
  color: #ffcc80;
  font-family: 'Courier New', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
  user-select: none;
}

.secret-card__sound:hover {
  background: linear-gradient(135deg, rgba(255, 152, 0, 0.4) 0%, rgba(255, 111, 0, 0.5) 100%);
  transform: scale(1.1);
  box-shadow: 0 0 16px rgba(255, 152, 0, 0.4);
  color: #fff;
}

.secret-card__sound:active {
  transform: scale(0.95);
}

.secret-card__sound.playing {
  animation: soundPulse 0.6s var(--easing-spring);
  background: linear-gradient(135deg, #ff9800 0%, #ff6f00 100%);
  color: #fff;
  box-shadow: 0 0 24px rgba(255, 152, 0, 0.6);
}

@keyframes soundPulse {
  0% { transform: scale(1); }
  30% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* Tip Block */
.secret-card__tip {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(76, 175, 80, 0.15);
  border: 1px solid rgba(76, 175, 80, 0.3);
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.5;
}

.secret-card__tip-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.secret-card__description {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-lg);
  white-space: pre-line;
}

/* Example Words */
.secret-card__examples-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.secret-card__examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.secret-card__word {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
}

.secret-card__word:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.secret-card__word:active {
  transform: scale(0.97);
}

.secret-card__word.playing {
  background: rgba(102, 126, 234, 0.25);
  border-color: rgba(102, 126, 234, 0.4);
  box-shadow: 0 0 12px rgba(102, 126, 234, 0.3);
}

.secret-card__word-play {
  font-size: 1rem;
  flex-shrink: 0;
}

.secret-card__word-text {
  font-weight: 600;
  color: var(--color-white);
  font-size: 0.95rem;
}

.secret-card__word-trans {
  font-family: 'Courier New', monospace;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.8rem;
}

.secret-card__word-meaning {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
}

/* Actions (Train Button) */
.secret-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.secret-card__train-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
  border: 1px solid rgba(102, 126, 234, 0.3);
  color: var(--color-white);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
}

.secret-card__train-btn:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.35) 0%, rgba(118, 75, 162, 0.35) 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.secret-card__train-btn:active {
  transform: scale(0.97);
}

/* Trainer Secret Link */
.trainer-secret-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: 999px;
  background: rgba(255, 152, 0, 0.15);
  border: 1px solid rgba(255, 152, 0, 0.3);
  color: #ffcc80;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
}

.trainer-secret-link:hover {
  background: rgba(255, 152, 0, 0.3);
  color: #fff;
  transform: scale(1.05);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .phoneme-slot {
    min-width: 50px;
    height: 70px;
    font-size: 1.5rem;
  }

  .phoneme-btn {
    min-width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }

  .word-display__emoji {
    font-size: 4rem;
  }

  .results__score {
    font-size: 3rem;
  }

  .secrets-banner {
    padding: var(--space-lg);
  }

  .secrets-banner__icon {
    font-size: 2.5rem;
  }

  .secret-card__header {
    padding: var(--space-md) var(--space-lg);
  }

  .secret-card__body {
    padding: 0 var(--space-lg);
  }

  .secret-card.open .secret-card__body {
    padding: 0 var(--space-lg) var(--space-lg);
  }

  .secrets-page__title {
    font-size: 1.35rem;
  }
}

/* Trainer Layout Fixes */
.trainer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 120px);
  padding: var(--space-md);
  gap: var(--space-lg);
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.phoneme-slot-container {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
  flex-wrap: wrap;
  width: 100%;
}

.phoneme-bank-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-md) 0;
  width: 100%;
}

/* Big Replay Button */
.btn-replay {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-smooth);
  margin-top: var(--space-md);
  backdrop-filter: blur(4px);
}

.btn-replay:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-replay:active {
  transform: scale(0.95);
}

.word-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-xl);
  width: 100%;
  max-width: 500px;
}