/* 智能助手页面样式 */
.ai-assistant-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
}

.ai-header {
    text-align: center;
    margin-bottom: 50px;
}

.ai-title {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.ai-search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto 40px;
}

.ai-search-input {
    width: 100%;
    padding: 20px 60px 20px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 50px;
    font-size: 16px;
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.ai-search-input:focus {
    outline: none;
    border-color: #4A90E2;
    box-shadow: 0 4px 25px rgba(74, 144, 226, 0.2);
}

.ai-search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    font-size: 18px;
}

.ai-search-btn:hover {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

.ai-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.ai-feature {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.ai-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.ai-feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: #4A90E2;
}

.ai-feature-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.ai-feature-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.ai-recent {
    margin-top: 50px;
}

.ai-recent-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.ai-recent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.ai-recent-item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 4px solid #4A90E2;
}

.ai-recent-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.ai-recent-icon {
    font-size: 24px;
    color: #4A90E2;
    margin-bottom: 15px;
}

.ai-recent-text {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.ai-recent-time {
    font-size: 12px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .ai-features {
        grid-template-columns: 1fr;
    }

    .ai-recent-grid {
        grid-template-columns: 1fr;
    }
}