/* Number/Date Pronunciation Quiz Styles */

/* Hero gradient - indigo/purple for number/date theme */
.number-quiz-hero {
    background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
}

/* Play button - circular */
.play-btn {
    width: 5.5rem;
    height: 5.5rem;
    border-radius: 50%;
    font-size: 2rem;
    transition: all 0.3s ease;
    border: none;
}
.play-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}
.play-btn i {
    color: white !important;
}
.play-btn.playing {
    animation: pulse 1s ease-in-out infinite;
}
.play-btn:disabled {
    opacity: 0.5;
}

/* Answer option buttons */
.number-option-btn {
    min-width: 200px;
    min-height: 70px;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    border-width: 3px;
    border-radius: 12px;
    cursor: pointer;
}
.number-option-btn:hover:not(:disabled) {
    transform: scale(1.03);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.number-option-btn.correct {
    background-color: #198754 !important;
    border-color: #198754 !important;
    color: white !important;
}
.number-option-btn.incorrect {
    background-color: #dc3545 !important;
    border-color: #dc3545 !important;
    color: white !important;
}
.number-option-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Display areas inside option buttons */
.number-option-btn .option-chinese {
    font-size: 1.4rem;
    font-weight: bold;
    line-height: 1.2;
}
.number-option-btn .option-pinyin {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* Quiz card */
.quiz-card {
    min-height: 420px;
}

/* Pulse animation for playing state */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Score display */
.score-display {
    font-size: 2.5rem;
    font-weight: bold;
}

/* Difficulty badge */
.difficulty-badge {
    font-size: 0.85rem;
    padding: 0.35em 0.75em;
}

/* Panel header */
.panel-header {
    background: linear-gradient(135deg, #4f46e5, #3730a3);
    color: white;
}

/* Category accuracy cards in sidebar */
.category-accuracy-item {
    padding: 0.35rem 0;
    border-bottom: 1px solid #f0f0f0;
}
.category-accuracy-item:last-child {
    border-bottom: none;
}

/* Results card */
.results-card {
    border: none;
    border-radius: 12px;
}

/* Category label in question area */
.category-label {
    font-size: 0.85rem;
    padding: 0.35em 0.75em;
}