/* Lesson page */
.lesson-steps .lesson-step {
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-card, .exercise-card {
    border-radius: 0.75rem;
}

.exercise-card {
    border-left: 3px solid var(--teletraan-cyan);
}

.exercise-card.correct { border-left-color: #00c853; }
.exercise-card.incorrect { border-left-color: var(--autobot-red); }

/* Multiple choice */
.mc-option {
    border-radius: 0.5rem !important;
    padding: 0.6rem 1rem;
    transition: all 0.15s;
    border-color: var(--teletraan-border);
}
.mc-option:hover {
    border-color: var(--teletraan-cyan);
    background: rgba(43, 166, 179, 0.05);
}
.mc-option.selected {
    background: rgba(43, 166, 179, 0.12);
    border-color: var(--teletraan-cyan);
    color: var(--teletraan-cyan-bright);
}
.mc-option.correct-answer {
    background: rgba(0, 200, 83, 0.12) !important;
    border-color: #00c853 !important;
    color: #00c853 !important;
}
.mc-option.wrong-answer {
    background: rgba(229, 57, 53, 0.12) !important;
    border-color: var(--autobot-red) !important;
    color: var(--autobot-red) !important;
}
.mc-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--teletraan-surface);
    border: 1px solid var(--teletraan-border);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'Rajdhani', sans-serif;
}

/* Fill blank */
.fill-blank-input input:focus {
    border-color: var(--teletraan-cyan);
    box-shadow: 0 0 0 0.2rem rgba(43, 166, 179, 0.15);
}

/* Reorder */
.reorder-container {
    min-height: 50px;
}
.reorder-item {
    cursor: grab;
    transition: transform 0.15s, box-shadow 0.15s;
    user-select: none;
    border-color: var(--teletraan-border);
}
.reorder-item:active { cursor: grabbing; }
.reorder-item.dragging {
    opacity: 0.5;
    transform: scale(0.98);
}
.reorder-item.drag-over {
    border-top: 2px solid var(--teletraan-cyan);
}

/* Lesson number bubble */
.lesson-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

/* Lesson card styling */
.lesson-card {
    transition: all 0.15s;
    cursor: pointer;
}
.lesson-card:hover {
    transform: translateX(4px);
    border-color: var(--teletraan-cyan) !important;
}
.lesson-card.lesson-complete {
    opacity: 0.7;
    border-left: 3px solid var(--teletraan-cyan);
}

/* Boss battle */
.boss-header {
    animation: bossPulse 2s ease-in-out infinite;
}
@keyframes bossPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.01); }
}

.boss-battle-card {
    cursor: pointer;
    transition: all 0.15s;
    border-left: 3px solid var(--autobot-red) !important;
}
.boss-battle-card:hover {
    transform: translateX(4px);
    box-shadow: 0 0 20px rgba(229, 57, 53, 0.15);
}

/* Correct/incorrect feedback animations */
.feedback-correct {
    animation: correctBounce 0.4s ease;
}
@keyframes correctBounce {
    0% { transform: scale(0.9); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.feedback-incorrect {
    animation: incorrectShake 0.4s ease;
}
@keyframes incorrectShake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* CodeMirror overrides */
.CodeMirror {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    height: auto;
    min-height: 100px;
    border-radius: 0 0 0.375rem 0.375rem;
}

@media (max-width: 768px) {
    .lesson-nav { position: sticky; bottom: 0; padding: 0.75rem 0; background: var(--teletraan-bg); }
}