/* ==========================================================================
   RWA平台响应式设计优化
   适配PC、平板和移动设备
   ========================================================================== */

/* 基础响应式设置 */
* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    overflow-x: hidden;
}

/* 容器响应式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 图片响应式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 表格响应式 */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive table {
    min-width: 600px;
}

/* 导航栏优化 */
@media (max-width: 1024px) {
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
    
    .cta-button, .auth-button {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* 平板设备优化 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .container {
        padding: 0 30px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
}

/* 移动设备优化 (最大768px) */
@media (max-width: 768px) {
    /* 基础布局 */
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏移动端优化 */
    .header {
        padding: 0.5rem 0;
    }
    
    .nav {
        padding: 0.75rem 0;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 2rem 0;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.mobile-active {
        left: 0;
    }
    
    .nav-links li {
        width: 100%;
        text-align: center;
        margin-bottom: 0.5rem;
    }
    
    .nav-links a {
        display: block;
        font-size: 1.1rem;
        padding: 1rem 2rem;
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        transition: all 0.3s ease;
    }
    
    .nav-links a:hover {
        background: rgba(79, 70, 229, 0.1);
        transform: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: transparent;
        border: none;
        cursor: pointer;
        font-size: 1.2rem;
        color: #374151;
        transition: all 0.3s ease;
        border-radius: 8px;
    }
    
    .mobile-menu-btn:hover {
        background: rgba(79, 70, 229, 0.1);
        color: #4f46e5;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .wallet-button, .auth-button {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    /* Hero区域优化 */
    .hero {
        padding: 120px 0 80px;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }
    
    .hero p {
        font-size: 1rem;
        line-height: 1.6;
        margin-bottom: 2rem;
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 280px;
        padding: 1rem 2rem;
        font-size: 1rem;
        text-align: center;
    }
    
    /* 特性网格优化 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
        text-align: center;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin: 0 auto 1rem;
    }
    
    /* 统计数据优化 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-item {
        text-align: center;
        padding: 1rem;
    }
    
    .stat-item h3 {
        font-size: 1.8rem;
    }
    
    /* 表单优化 */
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
    
    .form-control {
        padding: 0.875rem;
        font-size: 1rem;
    }
    
    /* 模态框优化 */
    .modal-content {
        width: 95%;
        max-width: 400px;
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .modal-title {
        font-size: 1.5rem;
    }
    
    /* 卡片优化 */
    .card {
        margin-bottom: 1rem;
    }
    
    .asset-card {
        padding: 1rem;
    }
    
    /* 页脚优化 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    /* 标题优化 */
    .section-title {
        font-size: 1.8rem;
        text-align: center;
        margin-bottom: 2rem;
    }
    
    .cta-section h2 {
        font-size: 1.8rem;
    }
}

/* 小屏移动设备优化 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .hero p {
        font-size: 0.95rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .feature-card {
        padding: 1.25rem;
    }
    
    .feature-card h3 {
        font-size: 1.1rem;
    }
    
    .modal-content {
        width: 98%;
        padding: 1.25rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .nav-links a {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
    
    .wallet-button, .auth-button {
        padding: 0.5rem 0.875rem;
        font-size: 0.8rem;
    }
}

/* 超小屏设备优化 (最大360px) */
@media (max-width: 360px) {
    .container {
        padding: 0 10px;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .feature-card {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav-links {
        height: calc(100vh - 60px);
        top: 60px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn, .button, .cta-button, .auth-button {
        min-height: 44px;
        min-width: 44px;
    }
    
    .nav-links a {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-menu-btn {
        min-height: 44px;
        min-width: 44px;
    }
}

/* 高分辨率屏幕优化 */
@media (min-resolution: 2dppx) {
    .feature-icon, .stat-item h3 {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 打印样式 */
@media print {
    .header, .footer, .mobile-menu-btn, .nav-actions {
        display: none !important;
    }
    
    .hero {
        padding: 20px 0;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* 可访问性优化 */
@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) {
    .nav-links {
        background: rgba(17, 24, 39, 0.98);
        color: #f9fafb;
    }
    
    .nav-links a {
        color: #f9fafb;
        border-bottom-color: rgba(255, 255, 255, 0.1);
    }
    
    .nav-links a:hover {
        background: rgba(79, 70, 229, 0.2);
    }
}

/* 工具类 */
.hide-mobile {
    display: block;
}

.show-mobile {
    display: none;
}

@media (max-width: 768px) {
    .hide-mobile {
        display: none;
    }
    
    .show-mobile {
        display: block;
    }
}

.text-center-mobile {
    text-align: left;
}

@media (max-width: 768px) {
    .text-center-mobile {
        text-align: center;
    }
}

/* 性能优化 */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}

/* 滚动优化 */
.smooth-scroll {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}