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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0c0c0c 0%, #1a1a1a 100%);
    color: #ffffff;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 背景动画 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #00d4ff;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    opacity: 0.6;
}

.particle:nth-child(1) {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 2s;
}

.particle:nth-child(3) {
    top: 80%;
    left: 40%;
    animation-delay: 4s;
}

.particle:nth-child(4) {
    top: 40%;
    left: 60%;
    animation-delay: 1s;
}

.particle:nth-child(5) {
    top: 10%;
    left: 90%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-20px) scale(1.2);
        opacity: 1;
    }
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部区域 */
.header {
    text-align: center;
    margin-bottom: 3rem;
}

.profile-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.avatar-container {
    position: relative;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.avatar:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

.status-indicator {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 20px;
    height: 20px;
    background: #00ff88;
    border-radius: 50%;
    border: 3px solid #1a1a1a;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 255, 136, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 136, 0);
    }
}

.profile-info h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.profile-info .title {
    font-size: 1.2rem;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.profile-info .description {
    color: #cccccc;
    font-size: 1rem;
}

/* 导航区域 */
.navigation {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.nav-item:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 153, 204, 0.2) 100%);
    border-color: #00d4ff;
    color: #00d4ff;
}

.nav-item i {
    font-size: 1.1rem;
}

/* 内容区域 */
.content {
    flex: 1;
}

.content-section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 链接网格 */
.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.link-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

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

.link-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.link-icon {
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 1rem;
}

.link-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.link-card p {
    color: #cccccc;
    font-size: 0.9rem;
    line-height: 1.5;
}

.add-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    background: rgba(0, 212, 255, 0.1);
    border: 2px dashed rgba(0, 212, 255, 0.3);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #00d4ff;
    font-weight: 500;
}

.add-link-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: #00d4ff;
    transform: translateY(-2px);
}

/* 项目网格 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.project-icon {
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 1rem;
}

.project-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.project-card p {
    color: #cccccc;
    margin-bottom: 1rem;
    line-height: 1.5;
}

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

.tech-tag {
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 联系方式 */
.contact-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.contact-item:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateX(5px);
}

.contact-item i {
    font-size: 1.5rem;
    color: #00d4ff;
    width: 30px;
    text-align: center;
}

/* 关于我 */
.about-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #cccccc;
    margin-bottom: 2rem;
}

.skills h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #00d4ff;
}

.skill-tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
}

.skill-tag {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 153, 204, 0.2) 100%);
    color: #00d4ff;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3) 0%, rgba(0, 153, 204, 0.3) 100%);
    transform: translateY(-2px);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: rgba(26, 26, 26, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    backdrop-filter: blur(20px);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h3 {
    color: #00d4ff;
    font-size: 1.3rem;
}

.close-btn {
    background: none;
    border: none;
    color: #cccccc;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.modal-body {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #cccccc;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.05);
}

.modal-footer {
    display: flex;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    justify-content: flex-end;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #cccccc;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #ffffff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #00b8e6 0%, #0088bb 100%);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .profile-info h1 {
        font-size: 2rem;
    }
    
    .navigation {
        gap: 0.5rem;
    }
    
    .nav-item {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }
    
    .nav-item span {
        display: none;
    }
    
    .links-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .avatar {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }
    
    .profile-info h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .link-card,
    .project-card {
        padding: 1.5rem;
    }
}

/* 底部版权信息 */
.footer {
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content p {
    color: #888888;
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-content p:hover {
    opacity: 1;
}

.footer-content a {
    color: #00d4ff;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.footer-content a:hover {
    color: #00b8e6;
    border-bottom-color: #00b8e6;
}

/* 简历页面底部版权信息 */
.resume-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 0;
    background: rgba(12, 12, 12, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    z-index: 100;
}

.resume-footer .footer-content p {
    color: #888888;
    font-size: 0.8rem;
    margin: 0;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.resume-footer .footer-content p:hover {
    opacity: 1;
}

.resume-footer .footer-content a {
    color: #00d4ff;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.resume-footer .footer-content a:hover {
    color: #00b8e6;
    border-bottom-color: #00b8e6;
}

/* 响应式设计 - 底部版权信息 */
@media (max-width: 768px) {
    .footer {
        margin-top: 2rem;
        padding: 1.5rem 0;
    }
    
    .footer-content p {
        font-size: 0.8rem;
    }
    
    .resume-footer .footer-content p {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .footer-content p,
    .resume-footer .footer-content p {
        font-size: 0.7rem;
        padding: 0 1rem;
    }
}