/* 关于项目页面样式 */

/* 页面标题区域 */
.about-hero {
    background: linear-gradient(135deg, #660874 0%, #8B5A96 50%, #E6E6FA 100%);
    padding: 8rem 0 4rem;
    color: white;
    text-align: center;
}

.about-title {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.about-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 项目背景区域 */
.project-background {
    padding: 5rem 0;
    background: #f8f9fa;
}

.background-content h2 {
    color: #660874;
    font-weight: bold;
    margin-bottom: 2rem;
    font-size: 2.5rem;
}

.background-content p {
    color: #666;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.project-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    color: #8B0000;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.background-image {
    text-align: center;
}

.image-placeholder {
    background: linear-gradient(135deg, #660874, #8B5A96);
    border-radius: 15px;
    padding: 3rem;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #E6E6FA;
}

.image-placeholder p {
    font-size: 1.2rem;
    margin: 0;
}

/* 作者信息区域 */
.author-info {
    padding: 5rem 0;
    background: white;
}

.author-info h2 {
    color: #8B0000;
    font-weight: bold;
    margin-bottom: 1rem;
}

.author-info p {
    color: #666;
    font-size: 1.1rem;
}

.team-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 8, 116, 0.2);
    border-color: #8B5A96;
}

.team-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #660874, #8B5A96);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.team-card:hover .team-avatar {
    transform: scale(1.1);
    background: linear-gradient(135deg, #DC143C, #FFD700);
}

.team-avatar i {
    font-size: 2rem;
    color: white;
}

.team-card h3 {
    color: #8B0000;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.team-role {
    color: #DC143C;
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-desc {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.team-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.skill-tag {
    background: #f8f9fa;
    color: #8B0000;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e9ecef;
}

/* 项目时间线 */
.project-timeline {
    padding: 5rem 0;
    background: #f8f9fa;
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #8B0000, #DC143C, #FFD700);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin: 3rem 0;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-date {
    background: linear-gradient(135deg, #8B0000, #DC143C);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    font-size: 0.9rem;
    z-index: 2;
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.3);
    min-width: 120px;
    text-align: center;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(139, 0, 0, 0.2);
}

.timeline-content h4 {
    color: #8B0000;
    font-weight: bold;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* 联系方式 */
.contact-section {
    padding: 5rem 0;
    background: white;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    border: 2px solid transparent;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(102, 8, 116, 0.2);
    border-color: #8B5A96;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #8B0000, #DC143C);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.contact-card:hover .contact-icon {
    transform: scale(1.1);
    background: linear-gradient(135deg, #8B5A96, #E6E6FA);
}

.contact-icon i {
    font-size: 1.5rem;
    color: white;
}

.contact-card h4 {
    color: #8B0000;
    font-weight: bold;
    margin-bottom: 1rem;
}

.contact-card p {
    color: #666;
    margin: 0;
}

/* 技术栈 */
.tech-stack {
    padding: 5rem 0;
    background: #f8f9fa;
}

.tech-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(139, 0, 0, 0.2);
}

.tech-item i {
    font-size: 3rem;
    color: #8B0000;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.tech-item:hover i {
    color: #DC143C;
    transform: scale(1.1);
}

.tech-item span {
    display: block;
    color: #333;
    font-weight: 500;
    font-size: 1rem;
}

/* 版权信息 */
.copyright-section {
    padding: 3rem 0;
    background: #8B0000;
    color: white;
    text-align: center;
}

.copyright-text {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.copyright-subtext {
    font-size: 0.9rem;
    opacity: 0.7;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-title {
        font-size: 2rem;
    }
    
    .project-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        text-align: center;
    }
    
    .timeline-content {
        margin: 1rem 0 0 0;
        width: 100%;
    }
    
    .team-card {
        margin-bottom: 2rem;
    }
    
    .contact-card {
        margin-bottom: 2rem;
    }
}

@media (max-width: 576px) {
    .about-hero {
        padding: 6rem 0 3rem;
    }
    
    .about-title {
        font-size: 1.8rem;
    }
    
    .background-content h2 {
        font-size: 2rem;
    }
    
    .team-card {
        padding: 1.5rem;
    }
    
    .contact-card {
        padding: 1.5rem;
    }
    
    .tech-item {
        padding: 1.5rem;
    }
}