/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    overflow-x: hidden;
    background: #000;
}

/* 星光背景 */
.stars-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, #0a0a0a, #1a1a2e, #16213e, #0f3460);
}

.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #ddd, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 4s ease-in-out infinite;
}

.twinkling {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(1px 1px at 25px 5px, white, transparent),
        radial-gradient(1px 1px at 50px 25px, white, transparent),
        radial-gradient(1px 1px at 125px 20px, white, transparent),
        radial-gradient(1.5px 1.5px at 50px 75px, white, transparent),
        radial-gradient(1px 1px at 100px 50px, white, transparent),
        radial-gradient(1px 1px at 150px 75px, white, transparent),
        radial-gradient(1.5px 1.5px at 175px 25px, white, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* 页面切换 */
.page {
    min-height: 100vh;
    display: none;
    position: relative;
}

.page.active {
    display: block;
}

/* 引导页样式 */
#landing-page {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.landing-content {
    max-width: 800px;
    z-index: 1;
}

.personal-statement h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
}

.personal-statement p {
    font-size: 1.5rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    color: #e0e0e0;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.scroll-indicator:hover {
    transform: translateY(5px);
}

.scroll-indicator span {
    font-size: 1.1rem;
    color: #e0e0e0;
}

.scroll-indicator i {
    font-size: 1.5rem;
    color: #e0e0e0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* 动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease-out 1s forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 简历页样式 */
#resume-page {
    padding-top: 80px;
}

.fixed-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.header-left h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.header-left p {
    font-size: 0.9rem;
    color: #b0b0b0;
}

.header-nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #ffffff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #ffffff, #e0e0e0);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 主要内容区域 */
.resume-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

/* 内容卡片 */
.content-card {
    background: rgba(40, 40, 40, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.content-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-card h2 i {
    color: #e0e0e0;
}

.content-card p {
    color: #e0e0e0;
    line-height: 1.7;
}

/* 技能栈样式 */
.skill-category {
    margin-bottom: 2rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

.skill-name {
    font-weight: 500;
    color: #e0e0e0;
}

.skill-stars {
    display: flex;
    gap: 0.25rem;
}

.skill-stars i {
    color: #ffd700;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.skill-stars i:hover {
    transform: scale(1.2);
    color: #ffed4e;
}

/* 兴趣爱好样式 */
.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.interest-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.interest-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.interest-item i {
    font-size: 1.5rem;
    color: #e0e0e0;
}

.interest-item span {
    font-size: 0.9rem;
    color: #e0e0e0;
    text-align: center;
}

/* 教育背景样式 */
.education-item {
    margin-bottom: 1.5rem;
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.education-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
}

.education-year {
    font-size: 0.9rem;
    color: #b0b0b0;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
}

.education-school {
    font-weight: 500;
    color: #e0e0e0;
    margin-bottom: 0.5rem;
}

.education-details {
    color: #b0b0b0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 工作经历样式 */
.experience-item {
    margin-bottom: 1.5rem;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.experience-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
}

.experience-year {
    font-size: 0.9rem;
    color: #b0b0b0;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
}

.experience-company {
    font-weight: 500;
    color: #e0e0e0;
    margin-bottom: 1rem;
}

.experience-details {
    list-style: none;
    padding: 0;
}

.experience-details li {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.experience-details li::before {
    content: '•';
    color: #e0e0e0;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.experience-details strong {
    color: #ffffff;
}

/* 项目样式 */
.project-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.project-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
}

.project-links {
    display: flex;
    gap: 0.5rem;
}

.project-link {
    color: #e0e0e0;
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.05);
}

.project-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.project-screenshot {
    margin-bottom: 1rem;
}

.screenshot-container {
    position: relative;
    width: 100%;
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.screenshot-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
}

.project-image:hover {
    transform: scale(1.05);
}

.screenshot-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.1));
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.screenshot-placeholder:hover {
    border-color: rgba(255, 255, 255, 0.4);
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.15));
}

.screenshot-placeholder i {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.3);
}

.screenshot-placeholder span {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.project-description {
    color: #e0e0e0;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: rgba(255, 255, 255, 0.1);
    color: #e0e0e0;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-nav {
        gap: 1rem;
    }
    
    .personal-statement h1 {
        font-size: 2.5rem;
    }
    
    .personal-statement p {
        font-size: 1.2rem;
    }
    
    .resume-content {
        padding: 1rem;
    }
    
    .content-card {
        padding: 1.5rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}