/* 轻量化独居老人大数据监护助手项目 - 关于我们页面样式文件 */
/* 作者：XXX团队 创建时间：2026年 */

/* 团队介绍区域 */
.team-intro-section {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.intro-text h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.intro-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.visual-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.visual-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(26, 115, 232, 0.1), transparent);
    transition: var(--transition-slow);
}

.visual-card:hover::before {
    left: 100%;
}

.visual-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.visual-card i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    transition: var(--transition-normal);
}

.visual-card:hover i {
    transform: scale(1.1) rotate(5deg);
    color: var(--primary-purple);
}

.visual-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.visual-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* 核心技能区域 */
.core-skills-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.skill-category {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.skill-category h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.skill-name {
    min-width: 100px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.skill-bar {
    flex: 1;
    height: 8px;
    background: var(--border-light);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-tech);
    border-radius: 4px;
    transition: width 1s ease-in-out;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

.skill-percent {
    min-width: 40px;
    text-align: right;
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 0.9rem;
}

/* 面试测试要求区域 */
.interview-section {
    padding: 4rem 0;
    background: var(--bg-primary);
}

.interview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.requirements-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.requirements-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.requirements-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.requirement-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    transition: var(--transition-fast);
}

.requirement-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(5px);
}

.requirement-item i {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-top: 0.25rem;
}

.requirement-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.requirement-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
}

.download-section {
    text-align: center;
    padding: 2rem 0 0;
    border-top: 1px solid var(--border-light);
}

.download-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.download-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.download-btn:hover::before {
    left: 100%;
}

.download-btn:hover {
    background: var(--primary-purple);
    transform: translateY(-2px);
}

.process-timeline {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.process-timeline h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-light);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-marker {
    width: 60px;
    height: 60px;
    background: var(--gradient-tech);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    flex-shrink: 0;
    z-index: 1;
}

.timeline-content {
    flex: 1;
}

.timeline-content h5 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
}

/* 联系信息区域 */
.contact-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto 3rem;
}

.contact-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.contact-card i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.contact-card h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-card p {
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.9rem;
}

.contact-note {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 12px;
    border-left: 4px solid var(--primary-orange);
}

.contact-note p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.contact-note strong {
    color: var(--primary-orange);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .interview-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .team-intro-section,
    .core-skills-section,
    .interview-section,
    .contact-section {
        padding: 3rem 0;
    }
    
    .team-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-visual {
        grid-template-columns: 1fr;
    }
    
    .visual-card {
        padding: 1.5rem 1rem;
    }
    
    .requirements-card,
    .process-timeline {
        padding: 2rem 1.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 25px;
    }
    
    .timeline-marker {
        width: 50px;
        height: 50px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .team-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-category {
        padding: 1.5rem;
    }
    
    .skill-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .skill-name {
        min-width: auto;
    }
    
    .skill-bar {
        width: 100%;
    }
    
    .requirement-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .timeline-item {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .timeline::before {
        display: none;
    }
}

/* 特殊动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.visual-card,
.skill-category,
.requirement-item,
.timeline-item,
.contact-card {
    animation: fadeInUp 0.6s ease forwards;
}

/* 延迟加载动画 */
.visual-card:nth-child(1) { animation-delay: 0.1s; }
.visual-card:nth-child(2) { animation-delay: 0.2s; }
.visual-card:nth-child(3) { animation-delay: 0.3s; }
.visual-card:nth-child(4) { animation-delay: 0.4s; }

.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.2s; }
.skill-category:nth-child(3) { animation-delay: 0.3s; }
.skill-category:nth-child(4) { animation-delay: 0.4s; }

.requirement-item:nth-child(1) { animation-delay: 0.1s; }
.requirement-item:nth-child(2) { animation-delay: 0.2s; }
.requirement-item:nth-child(3) { animation-delay: 0.3s; }
.requirement-item:nth-child(4) { animation-delay: 0.4s; }

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.contact-card:nth-child(1) { animation-delay: 0.1s; }
.contact-card:nth-child(2) { animation-delay: 0.2s; }
.contact-card:nth-child(3) { animation-delay: 0.3s; }
.contact-card:nth-child(4) { animation-delay: 0.4s; }

/* 技能条动画 */
.skill-progress {
    animation: skillProgress 1.5s ease-in-out forwards;
}

@keyframes skillProgress {
    from { width: 0%; }
    to { width: attr(style); }
}

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-animate.animate {
    opacity: 1;
    transform: translateY(0);
}