/* InfiVisTech 统一多巴胺风格样式 - 简化版 */

/* CSS变量 - 简化的多巴胺配色 */
:root {
    /* 主色调 - 减少复杂变化 */
    --primary-color: #FF6B6B;           /* 珊瑚红 */
    --secondary-color: #4ECDC4;         /* 青绿色 */
    --accent-color: #45B7D1;            /* 天蓝色 */
    --success-color: #96CEB4;           /* 薄荷绿 */
    --warning-color: #FFEAA7;           /* 柠檬黄 */
    --danger-color: #FD79A8;            /* 粉红色 */
    --purple: #A29BFE;                  /* 薰衣草紫 */
    
    /* 简化的渐变色 - 减少动画 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    /* 文字和背景颜色 */
    --text-primary: #2D3436;
    --text-secondary: #636e72;
    --text-light: #ffffff;
    --text-muted: #95a5a6;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    /* 布局变量 */
    --container-max-width: 1200px;
    --sidebar-width: 250px;
    --navbar-height: 70px;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-colorful: 0 8px 32px rgba(255, 107, 107, 0.25);
}

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--gradient-primary);
    background-attachment: fixed;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 统一导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--spacing-sm) 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    border-bottom: 3px solid transparent;
    background-image: var(--gradient-primary);
    background-size: 100% 3px;
    background-repeat: no-repeat;
    background-position: bottom;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

.nav-logo img:hover {
    transform: scale(1.05);
}

.nav-logo h1, .nav-logo h2 {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.8rem;
    font-weight: 800;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
    font-weight: 600;
}

.nav-menu a:hover {
    background: var(--gradient-secondary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-colorful);
}

/* 统一按钮系统 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-colorful);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(245, 87, 108, 0.4);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.btn-secondary {
    background: var(--gradient-accent);
    color: white;
}

/* 统一卡片系统 */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.card-header {
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
}

.card-body {
    padding: var(--spacing-md);
}

.card-footer {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* 布局系统 - 双栏布局 */
.layout-wrapper {
    display: flex;
    min-height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
}

.sidebar {
    flex: 0 0 var(--sidebar-width);
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-md);
    height: fit-content;
    position: sticky;
    top: calc(var(--navbar-height) + var(--spacing-lg));
}

.sidebar-nav {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: var(--spacing-xs);
}

.sidebar-nav a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--gradient-primary);
    color: white;
    transform: translateX(5px);
}

.main-content {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

/* 表格系统 - 响应式优化 */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table th,
.table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.table th {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 12px;
}

.table tr:hover {
    background: rgba(255, 107, 107, 0.05);
}

/* 模态框系统 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-card);
    margin: 5% auto;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid transparent;
    background: var(--gradient-primary);
    background-size: 100% 2px;
    background-repeat: no-repeat;
    background-position: bottom;
}

.modal-header h2 {
    margin: 0;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.close {
    color: var(--text-secondary);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

/* 表单系统 */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    transition: border-color 0.3s ease;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-control:read-only {
    background-color: var(--bg-secondary);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* 文件上传区域 */
.file-upload-area {
    border: 2px dashed var(--primary-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    background: rgba(255, 107, 107, 0.05);
    transition: all 0.3s ease;
}

.file-upload-area:hover {
    background: rgba(255, 107, 107, 0.1);
    border-color: var(--secondary-color);
}

.file-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(0,0,0,0.1);
}

.file-item .file-name {
    flex: 1;
    margin: 0 var(--spacing-xs);
    font-size: 14px;
    color: var(--text-primary);
}

/* 加载动画 */
.spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    z-index: 3000;
    text-align: center;
}

.spinner-icon {
    border: 4px solid rgba(255, 107, 107, 0.2);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-sm);
}

.spinner-text {
    color: var(--primary-color);
    font-weight: 600;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 - 优化导航栏切换 */
@media (max-width: 992px) {
    :root {
        --sidebar-width: 200px;
        --spacing-lg: 16px;
        --spacing-md: 12px;
    }
    
    .layout-wrapper {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .sidebar {
        flex: none;
        position: static;
        width: 100%;
        margin-bottom: var(--spacing-md);
    }
}

/* 移动端导航菜单 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-card);
        backdrop-filter: blur(20px);
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        border-radius: 0 0 var(--border-radius) var(--border-radius);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        pointer-events: none;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu a {
        display: block;
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-sm);
        transition: all 0.3s ease;
        color: var(--text-primary);
        text-decoration: none;
    }
    
    .nav-menu a:hover {
        background: rgba(102, 126, 234, 0.1);
        transform: translateX(5px);
    }
}

/* 确保桌面端导航菜单始终可见 */
@media (min-width: 769px) {
    .nav-menu {
        display: flex !important;
        position: static !important;
        flex-direction: row !important;
        background: transparent !important;
        backdrop-filter: none !important;
        padding: 0 !important;
        box-shadow: none !important;
        opacity: 1 !important;
        transform: none !important;
        pointer-events: auto !important;
        z-index: auto !important;
    }
    
    .nav-menu li {
        width: auto !important;
        text-align: left !important;
    }
    
    .nav-menu a {
        padding: var(--spacing-sm) var(--spacing-md) !important;
        color: var(--text-primary) !important;
    }
}

/* 移动端菜单切换按钮 */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex !important;
        flex-direction: column;
        cursor: pointer;
        gap: 3px;
        padding: 8px;
        border-radius: 6px;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        z-index: 1000;
    }
    
    .mobile-menu-toggle span {
        width: 22px;
        height: 2px;
        background: white;
        border-radius: 1px;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
}

/* 移动端表格和模态框优化 */
@media (max-width: 768px) {
    .table-responsive {
        font-size: 14px;
    }
    
    .table th,
    .table td {
        padding: var(--spacing-xs);
    }
    
    .modal-content {
        margin: 10px;
        width: calc(100% - 20px);
        max-height: calc(100vh - 20px);
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .card-body,
    .main-content {
        padding: var(--spacing-md);
    }
    
    .form-control {
        padding: var(--spacing-xs);
    }
    
    .sidebar-nav a {
        padding: var(--spacing-xs);
        font-size: 14px;
    }
}

/* 桌面端隐藏移动端菜单切换按钮 */
@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none !important;
    }
}

/* 特殊效果 - 简化版 */
.bounce {
    animation: bounce 2s ease-in-out;
}

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

.glow {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 20px rgba(255, 107, 107, 0.3);
    }
    to {
        box-shadow: 0 0 30px rgba(78, 205, 196, 0.5);
    }
}

/* 辅助类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* ===== 完整的移动端响应式设计 ===== */

/* 大屏幕平板 (992px - 1200px) */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        max-width: 960px;
        padding: 0 var(--spacing-sm);
    }
    
    /* 调整网格布局 */
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        max-width: 720px;
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        max-width: 720px;
        padding: 0 var(--spacing-sm);
    }
    
    /* 导航栏调整 */
    .navbar {
        padding: var(--spacing-xs) 0;
    }
    
    .nav-logo img {
        height: 40px !important;
    }
    
    /* 网格布局调整 */
    .grid-2 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    /* 字体大小调整 */
    h1 { font-size: 2.5rem !important; }
    h2 { font-size: 2rem !important; }
    h3 { font-size: 1.5rem !important; }
    
    /* 按钮调整 */
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    /* 卡片间距调整 */
    .card {
        margin-bottom: var(--spacing-md);
    }
}

/* 移动设备 (576px - 767px) */
@media (max-width: 767px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }
    
    /* 导航栏完全重构 */
    .navbar {
        padding: var(--spacing-xs) 0;
        height: 60px;
    }
    
    .nav-logo img {
        height: 45px !important;
        width: auto !important;
        object-fit: contain !important;
        border-radius: 6px !important;
    }
    
    /* 移动端菜单切换按钮 */
    .mobile-menu-toggle {
        display: flex !important;
        flex-direction: column;
        cursor: pointer;
        gap: 3px;
        padding: 8px;
        border-radius: 6px;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
    }
    
    .mobile-menu-toggle span {
        width: 22px;
        height: 2px;
        background: white;
        border-radius: 1px;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    
    /* 移动端导航菜单 */
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        border-radius: 0 0 var(--border-radius) var(--border-radius);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        align-items: center;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu a {
        display: block;
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-sm);
        transition: all 0.3s ease;
    }
    
    .nav-menu a:hover {
        background: rgba(102, 126, 234, 0.1);
        transform: translateX(5px);
    }
    
    /* 网格布局单列显示 */
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* 字体大小大幅调整 */
    h1 { font-size: 2rem !important; line-height: 1.2; }
    h2 { font-size: 1.6rem !important; line-height: 1.3; }
    h3 { font-size: 1.3rem !important; line-height: 1.4; }
    p { font-size: 14px !important; line-height: 1.5; }
    
    /* 按钮移动端优化 */
    .btn {
        padding: 10px 20px;
        font-size: 14px;
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xs);
    }
    
    /* 间距调整 */
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .card {
        margin-bottom: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    /* 表单移动端优化 */
    .form-control {
        padding: 12px;
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* 图片移动端优化 */
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* 轮播图移动端优化 */
    .carousel, .simple-carousel {
        height: 300px !important;
    }
    
    /* 移动端特殊布局调整 */
    .hero-section {
        padding: 80px 0 60px !important;
        margin-top: 60px !important;
    }
    
    .hero-section h1 {
        font-size: 2.2rem !important;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-section p {
        font-size: 16px !important;
        margin-bottom: var(--spacing-md);
    }
}

/* 小屏手机 (375px - 575px) */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .nav-container {
        padding: 0 var(--spacing-xs);
    }
    
    /* 导航栏进一步优化 */
    .navbar {
        height: 55px;
    }
    
    .nav-logo img {
        height: 40px !important;
        width: auto !important;
        object-fit: contain !important;
        border-radius: 4px !important;
    }
    
    /* 字体进一步缩小 */
    h1 { font-size: 1.8rem !important; }
    h2 { font-size: 1.4rem !important; }
    h3 { font-size: 1.2rem !important; }
    p { font-size: 13px !important; }
    
    /* 按钮进一步优化 */
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    /* 间距进一步缩小 */
    .section {
        padding: var(--spacing-md) 0;
    }
    
    .card {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    /* 移动端菜单进一步优化 */
    .nav-menu {
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }
    
    .nav-menu a {
        padding: var(--spacing-xs);
        font-size: 14px;
    }
}

/* 超小屏手机 (< 375px) */
@media (max-width: 374px) {
    .container {
        padding: 0 8px;
    }
    
    .nav-container {
        padding: 0 8px;
    }
    
    /* 导航栏最小化 */
    .navbar {
        height: 55px;
    }
    
    .nav-logo img {
        height: 35px !important;
        width: auto !important;
        object-fit: contain !important;
        border-radius: 3px !important;
    }
    
    /* 字体最小化 */
    h1 { font-size: 1.6rem !important; }
    h2 { font-size: 1.3rem !important; }
    h3 { font-size: 1.1rem !important; }
    p { font-size: 12px !important; }
    
    /* 按钮最小化 */
    .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* 间距最小化 */
    .section {
        padding: var(--spacing-sm) 0;
    }
    
    .card {
        padding: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .navbar {
        height: 50px;
    }
    
    .nav-logo img {
        height: 30px !important;
        width: auto !important;
        object-fit: contain !important;
        border-radius: 3px !important;
    }
    
    .hero-section {
        padding: 60px 0 40px !important;
        margin-top: 50px !important;
    }
    
    .hero-section h1 {
        font-size: 1.8rem !important;
    }
    
    .section {
        padding: var(--spacing-md) 0;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 触摸友好的按钮大小 */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* 触摸友好的链接 */
    a, button {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 触摸友好的表单控件 */
    .form-control, input, select, textarea {
        min-height: 44px;
        font-size: 16px;
    }
    
    /* 触摸友好的导航菜单 */
    .nav-menu a {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* 为高分辨率屏幕提供更清晰的图片 */
    img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 打印样式 */
@media print {
    .navbar, .footer, .btn, .mobile-menu-toggle {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .container {
        max-width: 100% !important;
        padding: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        break-inside: avoid;
    }
}

/* 无障碍优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-card: rgba(45, 45, 45, 0.95);
    }
    
    .navbar {
        background: rgba(26, 26, 26, 0.95);
    }
    
    .nav-menu {
        background: rgba(45, 45, 45, 0.95);
    }
}