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

/* 浅色模式（默认） */
:root {
    --primary-color: #007AFF;
    --secondary-color: #5AC8FA;
    --text-color: #000000;
    --text-light: #6B6B6B;
    --bg-color: #FFFFFF;
    --bg-light: #F2F2F7;
    --bg-card: #FFFFFF;
    --border-color: #C6C6C8;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --accent-color: #FF9500;
    --success-color: #34C759;
    --gradient: linear-gradient(135deg, #007AFF 0%, #5AC8FA 100%);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --sidebar-bg: #F2F2F7;
    --sidebar-text: #000000;
    --main-bg: #FFFFFF;
    --card-bg: #FFFFFF;
    --modal-bg: rgba(0, 0, 0, 0.4);
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #0A84FF;
        --secondary-color: #64D2FF;
        --text-color: #FFFFFF;
        --text-light: #98989D;
        --bg-color: #000000;
        --bg-light: #1C1C1E;
        --bg-card: #1C1C1E;
        --border-color: #38383A;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
        --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
        --accent-color: #FF9F0A;
        --success-color: #30D158;
        --gradient: linear-gradient(135deg, #0A84FF 0%, #64D2FF 100%);
        --navbar-bg: rgba(28, 28, 30, 0.95);
        --sidebar-bg: #1C1C1E;
        --sidebar-text: #FFFFFF;
        --main-bg: #000000;
        --card-bg: #1C1C1E;
        --modal-bg: rgba(0, 0, 0, 0.7);
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: var(--bg-light);
    font-weight: 400;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 导航栏 */
.navbar {
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: rgba(0, 122, 255, 0.1);
}

.nav-menu a.active {
    font-weight: 600;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    min-height: 70vh;
}

.hero-content {
    max-width: 100%;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.avatar {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-hover);
    transition: transform 0.3s ease;
    border: 4px solid var(--bg-color);
}

.avatar:hover {
    transform: scale(1.05);
}

.hero-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: var(--gradient);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.1;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* 特色内容 */
.features {
    padding: 4rem 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
}

/* 最新动态 */
.latest-posts {
    padding: 4rem 0;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.post-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.post-date {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.post-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.post-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.read-more:hover {
    color: var(--secondary-color);
}

/* 关于我页面 */
.about-section {
    padding: 4rem 0;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 4rem;
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.about-text {
    flex: 1;
}

.about-text h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.intro-text {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* 技能部分 */
.skills-section,
.experience-section {
    margin-bottom: 4rem;
}

.skills-section h2,
.experience-section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-item h3 {
    margin-bottom: 0.5rem;
}

.skill-bar {
    width: 100%;
    height: 10px;
    background: var(--bg-light);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.skill-progress {
    height: 100%;
    background: var(--primary-color);
    border-radius: 5px;
    transition: width 1s ease;
}

.skill-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-year {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-light);
}

/* 仪表板布局 */
.dashboard-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: calc(100vh - 80px);
}

/* 左侧导航栏 */
.sidebar-nav {
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 0;
    min-width: 240px;
    overflow-x: hidden;
}

.nav-header {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.nav-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
    color: var(--sidebar-text);
}

.nav-menu {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.nav-item span {
    font-size: 0.9rem;
    display: block;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-light);
    color: var(--text-color);
    border-color: var(--border-color);
}

.nav-item.active {
    background: var(--primary-color);
    color: var(--bg-color);
    border-color: var(--primary-color);
}

.nav-item i {
    display: none;
}

/* 主内容区域 */
.main-content {
    background: var(--main-bg);
    padding: 2rem;
    overflow-y: auto;
}

/* 欢迎区域 */
.welcome-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.welcome-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.welcome-subtitle {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--bg-color);
}

.stat-icon.desktop {
    background: var(--primary-color);
}

.stat-icon.web {
    background: var(--success-color);
}

.stat-icon.management {
    background: #FF3B30;
}

.stat-icon.platform {
    background: var(--accent-color);
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* 快捷操作 */
.quick-actions {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.action-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.action-item:hover {
    background: var(--card-bg);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.action-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--bg-color);
    font-size: 1.2rem;
}

.action-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.action-desc {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.action-link {
    display: inline-block;
    background: var(--primary-color);
    color: var(--bg-color);
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    text-decoration: none;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.action-link:hover {
    background: var(--secondary-color);
}

/* 作品集页面 */
.portfolio-section {
    padding: 3rem 0;
}

.page-title {
    font-size: 1.5rem;
    text-align: left;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-color);
}

.page-subtitle {
    text-align: left;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

.portfolio-filters {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0;
}

.filter-btn {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
    text-align: left;
    color: var(--text-color);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--bg-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.portfolio-item {
    background: var(--bg-card);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    aspect-ratio: 3/4;
}

.portfolio-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.portfolio-image {
    width: 100%;
    height: 60%;
    overflow: hidden;
    background: var(--bg-light);
    position: relative;
    cursor: pointer;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    color: var(--bg-color);
    font-size: 1.2rem;
}

.portfolio-info {
    padding: 1rem;
    height: 40%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.portfolio-info h3 {
    margin-bottom: 0.25rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 1rem;
}

.portfolio-info p {
    color: var(--text-light);
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    line-height: 1.4;
    flex-grow: 1;
}

.portfolio-tags {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.tag {
    padding: 0.2rem 0.4rem;
    background: var(--bg-light);
    border-radius: 0.25rem;
    font-size: 0.7rem;
    color: var(--text-light);
    font-weight: 500;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    background: rgba(0, 122, 255, 0.1);
    border-radius: 0.25rem;
    transition: all 0.3s;
}

.portfolio-link:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: translateY(-1px);
}

/* 特色项目样式 */
.portfolio-item.featured {
    grid-column: span 2;
    background: var(--bg-light);
}

.project-preview {
    width: 100%;
    height: 250px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mock-windows {
    position: relative;
    width: 200px;
    height: 150px;
}

.mini-window {
    position: absolute;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 60px;
    height: 40px;
    animation: float 3s ease-in-out infinite;
}

.mini-window::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    width: 6px;
    height: 6px;
    background: #ff5f56;
    border-radius: 50%;
    box-shadow: 12px 0 0 #ffbd2e, 24px 0 0 #27ca3f;
}

.window-1 {
    top: 10px;
    left: 20px;
    background: linear-gradient(135deg, #e6e6fa, #f0f8ff);
    animation-delay: 0s;
}

.window-2 {
    top: 60px;
    right: 30px;
    background: linear-gradient(135deg, #fff0f5, #f8f8ff);
    animation-delay: 1s;
}

.window-3 {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f0fff0, #f5f5dc);
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* 项目链接样式 */
.portfolio-links {
    margin-top: 1rem;
}

.portfolio-link {
    display: inline-block;
    padding: 8px 16px;
    background: var(--primary-color);
    color: var(--bg-color);
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.portfolio-link:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* 项目统计区域 */
.portfolio-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-weight: 500;
}

/* 爱心动画预览样式 */
.heart-animation {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.animated-heart {
    font-size: 4rem;
    animation: heartbeat 1.5s ease-in-out infinite;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
}

@keyframes heartbeat {
    0%, 100% { 
        transform: scale(1); 
    }
    50% { 
        transform: scale(1.2); 
    }
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particles span {
    position: absolute;
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
    opacity: 0.8;
}

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

.particles span:nth-child(2) {
    top: 30%;
    right: 25%;
    animation-delay: 0.5s;
}

.particles span:nth-child(3) {
    bottom: 25%;
    left: 30%;
    animation-delay: 1s;
}

.particles span:nth-child(4) {
    bottom: 20%;
    right: 20%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
        opacity: 0.8;
    }
    50% { 
        transform: translateY(-15px) rotate(180deg); 
        opacity: 1;
    }
}

/* 图片放大模态框 */
.image-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-bg);
    animation: fadeIn 0.3s;
}

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

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    animation: zoomIn 0.3s;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: var(--text-color);
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--bg-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
    }
    to {
        transform: scale(1);
    }
}

/* 联系方式页面 */
.contact-section {
    padding: 4rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h2,
.contact-form-container h2 {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h3 {
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
}

.social-icons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-icon {
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    border-radius: 5px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s;
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--bg-color);
}

/* 表单样式 */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: var(--bg-light);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer p {
    color: var(--text-light);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.social-link:hover {
    color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--navbar-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
        border-radius: 0 0 0.5rem 0.5rem;
        gap: 0.5rem;
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem 1rem;
        gap: 2rem;
    }

    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .sidebar-nav {
        order: 2;
        position: relative;
    }

    .main-content {
        order: 1;
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }

    .actions-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 1rem;
    }

    .nav-menu {
        display: flex;
        overflow-x: auto;
        padding: 0.5rem;
    }

    .nav-item {
        white-space: nowrap;
        min-width: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .portfolio-item.featured {
        grid-column: span 1;
    }

    .portfolio-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-top: 2rem;
        padding: 2rem 0;
    }

    .stat-item {
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .features-grid,
    .posts-grid {
        grid-template-columns: 1fr;
    }

    .footer .container {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2rem;
    }

    .portfolio-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .mock-windows {
        width: 150px;
        height: 100px;
    }

    .mini-window {
        width: 45px;
        height: 30px;
    }
}