/* 关于我页面专用样式 - 现代简约抽象 */

/* 页面头部样式 */
.about-header {
    padding: 6rem 0 4rem;
    background: var(--light-color);
    color: var(--dark-color);
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

/* 抽象几何背景 */
.about-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

.about-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(45deg, transparent 65%, rgba(0, 0, 0, 0.02) 65%),
        linear-gradient(-45deg, transparent 75%, rgba(0, 0, 0, 0.02) 75%);
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

.about-hero {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.about-profile {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: center;
}

.profile-image {
    position: relative;
}

.image-placeholder {
    width: 200px;
    height: 200px;
    background: transparent;
    border: 1px solid var(--gray-light);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: var(--dark-color);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 50%, rgba(0, 0, 0, 0.02) 50%),
        linear-gradient(-45deg, transparent 50%, rgba(0, 0, 0, 0.02) 50%);
}

.image-placeholder:hover {
    border-color: var(--dark-color);
    transform: scale(1.05);
}

.profile-tagline {
    font-size: 1.25rem;
    color: var(--gray-medium);
    margin-bottom: 2rem;
    max-width: 600px;
    line-height: 1.6;
    opacity: 0.9;
}

.profile-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 主要内容区域 */
.about-main {
    padding: var(--space-3xl) 0;
}

.about-section {
    margin-bottom: var(--space-3xl);
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-content {
    max-width: 800px;
    font-size: 1.125rem;
    line-height: 1.8;
}

.about-content p {
    margin-bottom: var(--space-lg);
}

/* 技术栈样式 */
.tech-stack {
    display: grid;
    gap: var(--space-2xl);
}

.tech-category {
    background-color: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.tech-category h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    color: var(--dark-color);
}

.tech-category h3 i {
    color: var(--primary-color);
}

.tech-items {
    display: grid;
    gap: var(--space-md);
}

.tech-item {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    align-items: center;
    gap: var(--space-lg);
}

.tech-name {
    font-weight: 500;
    color: var(--dark-color);
}

.tech-progress {
    height: 8px;
    background-color: var(--gray-light);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.tech-bar {
    height: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    transition: width 1s ease;
}

.tech-level {
    font-size: 0.875rem;
    color: var(--gray-color);
    min-width: 60px;
    text-align: right;
}

/* 时间线样式 */
.timeline {
    position: relative;
    max-width: 800px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--space-2xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-date {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
}

.timeline-content {
    background-color: white;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    color: var(--dark-color);
    margin-bottom: var(--space-sm);
}

.timeline-content p {
    color: var(--gray-color);
    margin-bottom: var(--space-md);
}

.timeline-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    list-style: none;
}

.timeline-skills li {
    background-color: var(--gray-light);
    color: var(--gray-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

/* 教育卡片样式 */
.education-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.education-card {
    background-color: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-lg);
    align-items: start;
    transition: all var(--transition-normal);
}

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

.edu-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.edu-content h3 {
    color: var(--dark-color);
    margin-bottom: var(--space-xs);
}

.edu-school {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.edu-content p {
    color: var(--gray-color);
    margin-bottom: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-profile {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-lg);
    }
    
    .image-placeholder {
        margin: 0 auto;
    }
    
    .profile-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--space-xl);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .tech-item {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .tech-level {
        text-align: left;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-date {
        width: 40px;
        font-size: 0.75rem;
    }
    
    .education-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .about-header {
        padding: var(--space-2xl) 0;
    }
    
    .image-placeholder {
        width: 150px;
        height: 150px;
        font-size: 3rem;
    }
    
    .profile-tagline {
        font-size: 1.125rem;
    }
    
    .profile-stats {
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .about-content {
        font-size: 1rem;
    }
    
    .tech-category {
        padding: var(--space-lg);
    }
    
    .timeline-content {
        padding: var(--space-md);
    }
}