/* 题目导航指示器样式 */
.navigation-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.question-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #e1e5e9;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    flex-shrink: 0;
}

.question-nav-dot:hover {
    transform: scale(1.2);
    background-color: #d0d7e0;
}

.question-nav-dot.current {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: scale(1.4);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.question-nav-dot.correct {
    background-color: #28a745;
}

.question-nav-dot.wrong {
    background-color: #dc3545;
}

.question-nav-dot.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.question-nav-dot.tooltip::before {
    content: '';
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%);
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.question-nav-dot.tooltip:hover::after,
.question-nav-dot.tooltip:hover::before {
    opacity: 1;
    visibility: visible;
}

/* 上一题按钮样式 */
.prev-question-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.prev-question-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.prev-question-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* 移动端响应式调整 */
@media (max-width: 768px) {
    .navigation-indicator {
        gap: 5px;
        margin: 15px 0;
    }
    
    .question-nav-dot {
        width: 10px;
        height: 10px;
    }
    
    .question-nav-dot.current {
        transform: scale(1.3);
    }
    
    .prev-question-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

/* 导航指示器与按钮组合样式 */
.question-navigation {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin: 20px 0;
}

.nav-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* 题目历史位置指示器 */
.history-position {
    text-align: center;
    color: #667eea;
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

/* 动画效果 */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.question-nav-dot.pulse {
    animation: pulse 1.5s infinite;
}