/* CSS变量 - 浅色模式 */
:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --text-primary: #333;
    --text-secondary: #666;
    --text-tertiary: #888;
    --border-color: #f0f0f0;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.12);
    --shadow-strong: rgba(0, 0, 0, 0.15);
}

/* 深色模式变量 */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --border-color: #404040;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --shadow-strong: rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    opacity: 0;
    animation: fadeIn 0.6s ease-in forwards;
}

/* 页面加载淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: clamp(20px, 5vw, 40px) clamp(16px, 4vw, 20px);
}

/* 个人信息区域 */
.hero-section {
    text-align: center;
    margin-bottom: clamp(40px, 8vw, 60px);
    background: var(--bg-secondary);
    padding: clamp(30px, 8vw, 60px) clamp(20px, 5vw, 40px);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.profile-image {
    margin-bottom: 24px;
}

.profile-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--border-color);
}

.name {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.subtitle {
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.description {
    font-size: clamp(0.9rem, 2vw, 1rem);
    color: var(--text-tertiary);
    max-width: 500px;
    margin: 0 auto;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 600;
    margin-bottom: clamp(24px, 5vw, 40px);
    color: var(--text-primary);
}

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

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

/* 关于我 - 卡片网格 */
.about-section {
    margin-bottom: 60px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.skill-card {
    background: var(--bg-secondary);
    padding: 32px 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
}

.skill-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 社交媒体 */
.social-section {
    margin-bottom: 60px;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.social-card {
    background: var(--bg-secondary);
    padding: 32px 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.social-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

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

.social-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px var(--shadow-strong);
}

.social-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.social-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.social-card p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* 最新发布 */
.blog-section {
    margin-bottom: 60px;
}

.blog-list {
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    overflow: hidden;
}

.blog-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.blog-item:last-child {
    border-bottom: none;
}

.blog-item:hover {
    background-color: #f8f9fa;
}

.blog-item h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.blog-date {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-left: 16px;
}

.show-more {
    text-align: center;
    margin-top: 24px;
}

/* 作品展示 */
.works-section {
    margin-bottom: 60px;
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 720px;
    margin: 0 auto;
}

.work-card {
    background: var(--bg-secondary);
    padding: 32px 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.work-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

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

.work-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px var(--shadow-strong);
}

.work-icon {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 2rem;
}

.work-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.work-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 付费产品 */
.products-section {
    margin-bottom: 60px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--bg-secondary);
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-3px);
}

.product-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.product-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    font-size: 1.3rem;
    color: var(--text-secondary);
}

.product-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.product-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.product-features {
    list-style: none;
    margin-bottom: 32px;
}

.product-features li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 6px 0;
    position: relative;
    padding-left: 20px;
}

.product-features li:before {
    content: "✓";
    color: #4caf50;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.product-price {
    margin-bottom: 24px;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.period {
    color: var(--text-tertiary);
    font-size: 1rem;
    margin-left: 4px;
}

/* 联系方式 */
.contact-section {
    margin-bottom: 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 720px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-secondary);
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

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

.contact-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px var(--shadow-strong);
}

.contact-icon {
    width: clamp(60px, 10vw, 80px);
    height: clamp(60px, 10vw, 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border-radius: 12px;
}

.work-icon {
    width: clamp(60px, 10vw, 80px);
    height: clamp(60px, 10vw, 80px);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: clamp(1.5rem, 3vw, 2rem);
}

.contact-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-email {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.contact-action {
    color: #007bff;
    font-size: 0.95rem;
    font-weight: 400;
    margin: 0;
}

/* 按钮样式 */
.btn-primary {
    background: #007bff;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
    width: 100%;
}

.btn-primary:hover {
    background: #0056b3;
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid #ddd;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-outline:hover {
    border-color: #007bff;
    color: #007bff;
}

/* 深色模式切换按钮 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--shadow-hover);
}

.theme-toggle:active {
    transform: scale(0.95);
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    border-top: 1px solid #eee;
    margin-top: 40px;
}

/* 响应式设计 */
@media (max-width: 320px) {
    .hero-section {
        padding: 24px 16px;
    }

    .skill-card,
    .social-card,
    .work-card,
    .contact-card {
        padding: 20px 16px;
    }

    .skill-card h3,
    .social-card h3,
    .work-card h3,
    .contact-card h3 {
        font-size: 1rem;
    }

    .skill-card p,
    .social-card p,
    .work-card p {
        font-size: 0.85rem;
    }

    .modal-content {
        width: 95%;
        height: auto;
        max-width: 280px;
        aspect-ratio: 3/4;
    }

    .qr-code {
        width: 180px;
        height: 180px;
    }

    .contact-icon {
        width: 60px;
        height: 60px;
    }

    .work-icon {
        width: 60px;
        height: 60px;
    }

    .blog-item h3 {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .skill-card,
    .social-card,
    .work-card,
    .contact-card {
        padding: 24px 20px;
    }

    .section-title {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .works-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .contact-email {
        font-size: 1rem;
    }

    .btn-outline,
    .btn-primary {
        padding: 10px 24px;
        font-size: 0.95rem;
    }
}
@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .blog-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .blog-date {
        margin-left: 0;
    }

    .modal-content {
        width: 85%;
        height: auto;
        max-width: 350px;
        aspect-ratio: 3/4;
    }

    .qr-code {
        width: 200px;
        height: 200px;
    }

    .works-grid,
    .contact-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
}

.gmail-icon {
    background: transparent;
}

.wechat-icon {
    background: transparent;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
    width: 350px;
    height: 520px;
    overflow: hidden;
    animation: modalFadeIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 30px 30px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(-20px);
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
        backdrop-filter: blur(10px);
    }
}

@keyframes modalFadeOut {
    from {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
    to {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
}

.modal-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 10px 0;
}

.modal-body {
    padding: 32px;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.qr-code {
    width: 240px;
    height: 240px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transition: transform 0.3s ease;
    margin: 0;
}

.qr-code:hover {
    transform: scale(1.02);
}

.qr-desc {
    color: var(--text-tertiary);
    font-size: 1rem;
    font-weight: 400;
    margin: 10px 0;
}

.modal-footer {
    padding: 20px 32px;
    text-align: center;
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.modal-close-btn {
    background: #1a1a1a;
    color: white;
    border: none;
    padding: 12px 40px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px 0 0 0;
}

.modal-close-btn:hover {
    background: #333;
    transform: translateY(-1px);
}