/* 模式 Tab */
.mode-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 24px;
}
.mode-tab {
    background: #fff;
    border: 2px solid #e2ecf6;
    border-radius: 18px;
    padding: 18px 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.mode-tab:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(66,165,245,0.15); }
.mode-tab.active {
    border-color: #42a5f5;
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    box-shadow: 0 6px 16px rgba(66,165,245,0.25);
}
.mode-tab .mt-emoji { font-size: 2rem; margin-bottom: 6px; }
.mode-tab .mt-name { font-size: 1rem; font-weight: 700; color: #0d2b3e; margin-bottom: 4px; }
.mode-tab .mt-desc { font-size: 0.78rem; color: #7a8ba0; }

/* 答题区 */
.play-area { padding: 1rem 0; }
.play-progress {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.95rem; color: #1e88e5; font-weight: 600; margin-bottom: 10px;
}
.play-correct-count b { color: #43a047; font-size: 1.1rem; }

.question-box {
    text-align: center;
    padding: 40px 20px;
    margin: 20px 0;
}
.question-prompt {
    font-size: 3rem;
    font-weight: 700;
    color: #0d2b3e;
    letter-spacing: 4px;
    line-height: 1.3;
}
.question-prompt.is-ciyu { font-size: 2.2rem; letter-spacing: 6px; }

.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin: 24px 0;
}
.option-btn {
    padding: 24px 12px;
    font-size: 1.8rem;
    font-weight: 700;
    color: #0d2b3e;
    background: #fff;
    border: 2px solid #e2ecf6;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}
.option-btn:hover:not(.disabled) {
    border-color: #42a5f5;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(66,165,245,0.2);
}
.option-btn.correct {
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    border-color: #43a047;
    color: #1b5e20;
}
.option-btn.wrong {
    background: linear-gradient(135deg, #ffebee, #ffcdd2);
    border-color: #ef5350;
    color: #b71c1c;
}
.option-btn.disabled { cursor: not-allowed; opacity: 0.5; }
.option-btn.excluded {
    text-decoration: line-through;
    opacity: 0.35;
    pointer-events: none;
}

.feedback {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
    min-height: 32px;
    margin: 12px 0;
}
.feedback.ok { color: #43a047; }
.feedback.err { color: #e53935; }

.play-actions { display: flex; justify-content: center; gap: 12px; margin-top: 16px; }
.hint-remaining { text-align: center; font-size: 0.85rem; color: #f39c12; margin-top: 8px; min-height: 20px; }

/* 结果区 */
.result-area { text-align: center; padding: 2rem 1rem; }
.result-emoji { font-size: 5rem; margin-bottom: 1rem; }
.result-title { font-size: 1.8rem; font-weight: 700; color: #0d2b3e; margin-bottom: 0.8rem; }
.result-desc { font-size: 1rem; color: #1e88e5; margin-bottom: 1.5rem; line-height: 1.8; }
.carrot-result { margin: 16px 0; }

/* 多音字显示 */
.question-prompt.multi-pinyin {
    font-size: 2.2rem;
    letter-spacing: 2px;
}

@media (max-width: 640px) {
    .mode-tabs { grid-template-columns: 1fr; }
    .options-grid { grid-template-columns: 1fr; }
    .option-btn { padding: 18px 8px; font-size: 1.5rem; }
    .question-prompt { font-size: 2.2rem; }
    .question-prompt.is-ciyu { font-size: 1.6rem; }
}