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

/* 根元素和字体设置 */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-dark: #2d3748;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    padding: 20px;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    overflow: hidden;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 头部样式 */
.header {
    text-align: center;
    padding: 60px 40px 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* 联系方式网格 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 40px;
    background: var(--bg-light);
}

/* 联系卡片样式 */
.contact-card {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.contact-card:hover::before {
    transform: scaleX(1);
}

/* 卡片图标 */
.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.contact-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

/* 特定卡片颜色 */

.qq-card .card-icon {
    background: linear-gradient(135deg, #4299e1, #3182ce);
}

.email-card .card-icon {
    background: linear-gradient(135deg, #ed8936, #dd6b20);
}

.github-card .card-icon {
    background: linear-gradient(135deg, #4a5568, #2d3748);
}

.address-card .card-icon {
    background: linear-gradient(135deg, #9f7aea, #805ad5);
}

.website-card .card-icon {
    background: linear-gradient(135deg, #38b2ac, #319795);
}

/* 卡片标题 */
.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

/* 卡片内容 */
.card-content {
    font-size: 1.1rem;
    margin-bottom: 12px;
    font-weight: 500;
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 联系链接样式 */
.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.contact-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

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

/* 二维码容器 */
.qr-code-container {
    margin-top: 20px;
}

.qr-toggle {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
}

.qr-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.qr-toggle i {
    margin-right: 8px;
}

/* 二维码样式 */
.qr-code {
    margin-top: 20px;
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.qr-code.show {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.qr-code svg {
    border-radius: 8px;
    box-shadow: var(--shadow-light);
}

/* 页脚样式 */
.footer {
    text-align: center;
    padding: 30px;
    background: var(--text-dark);
    color: white;
    font-size: 0.9rem;
}

/* 响应式设计 - 平板 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .header {
        padding: 40px 20px 30px;
    }
    
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .contact-nav {
        gap: 6px;
        margin: 20px 0 30px 0;
        padding: 0 10px;
    }
    
    .nav-item {
        min-width: 70px;
        padding: 12px 8px;
        gap: 6px;
    }
    
    .nav-icon {
        font-size: 20px;
    }
    
    .nav-text {
        font-size: 11px;
    }
    
    .contact-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 30px 20px;
    }
    
    .contact-card {
        padding: 25px 20px;
    }
    
    .card-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
}

/* 响应式设计 - 手机 */
@media (max-width: 480px) {
    body {
        padding: 5px;
    }
    
    .header {
        padding: 30px 15px 25px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .contact-nav {
        gap: 4px;
        margin: 15px 0 25px 0;
    }
    
    .nav-item {
        min-width: 60px;
        padding: 10px 6px;
        gap: 4px;
    }
    
    .nav-icon {
        font-size: 18px;
    }
    
    .nav-text {
        font-size: 10px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 20px 15px;
    }
    
    .contact-card {
        padding: 20px 15px;
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .card-title {
        font-size: 1.3rem;
    }
    
    .card-content {
        font-size: 1rem;
    }
    
    .qr-toggle {
        padding: 10px 20px;
        font-size: 0.8rem;
    }
}

/* 超小屏幕优化 */
@media (max-width: 320px) {
    .title {
        font-size: 1.8rem;
    }
    
    .contact-card {
        padding: 15px 10px;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #e2e8f0;
        --text-light: #a0aec0;
        --bg-light: #1a202c;
        --bg-white: #2d3748;
    }
}

/* 导航条样式 */
.contact-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 30px 0 40px 0;
    padding: 0 20px;
    flex-wrap: wrap;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    text-decoration: none;
    color: #333;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    min-width: 80px;
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-item:hover::before {
    left: 0;
}

.nav-item:hover {
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
    border-color: transparent;
}

.nav-icon {
    font-size: 24px;
    transition: transform 0.3s ease;
}

.nav-item:hover .nav-icon {
    transform: scale(1.2);
}

.nav-text {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.nav-item:hover .nav-text {
    font-weight: 700;
}

/* 导航条按钮点击效果 */
.nav-item:active {
    transform: translateY(-2px) scale(0.98);
}

.nav-item {
    position: relative;
    overflow: hidden;
}

/* 波纹效果样式 */
.nav-item .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
    box-sizing: border-box;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 100%;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    transform: scale(0.8) translateY(50px);
    transition: all 0.3s ease;
    position: relative;
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0);
}

/* 小屏幕高度优化 */
@media (max-height: 600px) {
    .modal-overlay {
        align-items: flex-start;
        padding: 10px;
    }
    
    .modal-content {
        max-height: calc(100vh - 20px);
        margin-top: 10px;
    }
    
    .modal-header {
        padding: 15px 20px 10px;
    }
    
    .modal-body {
        padding: 10px 20px 20px;
    }
}

/* 超小屏幕高度优化 */
@media (max-height: 500px) {
    .modal-overlay {
        padding: 5px;
    }
    
    .modal-content {
        max-height: calc(100vh - 10px);
        border-radius: 15px;
    }
    
    .modal-header {
        padding: 10px 15px 5px;
    }
    
    .modal-body {
        padding: 5px 15px 15px;
    }
    
    .modal-contact-info {
        gap: 10px;
    }
    
    .modal-actions {
        gap: 8px;
    }
    
    .modal-action-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-body {
    padding: 30px;
}

/* 模态框内容样式 */
.modal-contact-info {
    text-align: center;
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: var(--shadow-medium);
}

/* 自定义模态框详情样式 */
.modal-details {
    margin: 20px 0;
}

.modal-details h4 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.contact-value {
    font-size: 1.1rem;
    font-weight: 500;
    margin: 15px 0;
    color: var(--primary-color);
    line-height: 1.5;
}

.contact-description {
    font-size: 0.95rem;
    color: var(--text-light);
    margin: 10px 0;
    line-height: 1.4;
}

.modal-contact-value {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 20px 0;
    color: var(--text-dark);
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 25px;
    flex-wrap: wrap;
}

.modal-action-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-light);
}

.modal-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.modal-action-btn.secondary {
    background: var(--bg-light);
    color: var(--text-dark);
}

.modal-qr-code {
    margin: 20px 0;
    text-align: center;
}

.modal-qr-code svg {
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    background: white;
    padding: 10px;
}

/* 卡片点击效果优化 */
.contact-card {
    cursor: pointer;
    user-select: none;
}

.contact-card:active {
    transform: translateY(-4px) scale(0.98);
}

/* 响应式优化 - 悬浮菜单 */
@media (max-width: 768px) {
    .floating-menu {
        top: 15px;
        right: 15px;
    }
    
    .menu-toggle {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .menu-items {
        min-width: 300px;
        padding: 8px;
    }
    
    .menu-item {
        padding: 10px 8px;
        font-size: 0.7rem;
        min-width: 40px;
    }
    
    .menu-item i {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .floating-menu {
        top: 10px;
        right: 10px;
    }
    
    .menu-toggle {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .menu-items {
        min-width: 250px;
        flex-direction: column;
        align-items: stretch;
        border-radius: 15px;
        padding: 10px;
        top: 55px;
        right: 0;
        transform: translateY(-100%);
    }
    
    .floating-menu.open .menu-items {
        transform: translateY(0);
    }
    
    .menu-item {
        flex-direction: row;
        justify-content: flex-start;
        padding: 12px 15px;
        border-radius: 10px;
        gap: 12px;
    }
    
    .menu-item i {
        margin-bottom: 0;
        font-size: 1.1rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 10px;
    }
    
    .modal-header {
        padding: 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .modal-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal-action-btn {
        justify-content: center;
    }
}

/* 动画优化 - 减少动画对于偏好减少动画的用户 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}