/* 移动端优化样式 */

/* 基础响应式布局 */
@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.2rem;
        --spacing-sm: 0.4rem;
        --spacing-md: 0.8rem;
        --spacing-lg: 1.2rem;
        --spacing-xl: 1.6rem;
    }

    html {
        font-size: 14px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }
}

/* 移动导航栏 */
@media (max-width: 768px) {
    .navbar {
        height: 60px;
    }

    .navbar-container {
        height: 60px;
    }

    .nav-controls {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--background-light);
        padding: var(--spacing-sm);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        display: flex;
        justify-content: space-around;
        z-index: 1000;
    }

    .dark .nav-controls {
        background: var(--background-dark);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    }
}

/* 移动端英雄区域 */
@media (max-width: 768px) {
    .hero {
        min-height: 80vh;
        padding: 6rem 0 8rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-lg);
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-xl);
    }

    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-cta .btn {
        width: 100%;
    }
}

/* 移动端卡片网格 */
@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

    .card-icon {
        width: 40px;
        height: 40px;
    }

    .card .number {
        font-size: 3rem;
    }
}

/* 移动端统计部分 */
@media (max-width: 768px) {
    .stats-section {
        margin: var(--spacing-lg) calc(var(--spacing-md) * -1);
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .stat-item {
        padding: var(--spacing-md);
    }

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

    .stat-label {
        font-size: 0.9rem;
    }
}

/* 移动端页脚 */
@media (max-width: 768px) {
    .footer {
        padding: var(--spacing-xl) 0 calc(60px + var(--spacing-xl));
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-section h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-links {
        justify-content: center;
    }
}

/* 移动端手势支持 */
@media (max-width: 768px) {
    .card {
        cursor: pointer;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }

    .card:active {
        transform: scale(0.98);
    }

    .btn {
        -webkit-tap-highlight-color: transparent;
    }

    .btn:active {
        transform: scale(0.98);
    }
}

/* 移动端性能优化 */
@media (max-width: 768px) {
    * {
        -webkit-overflow-scrolling: touch;
    }

    .hero,
    .stats-section {
        background-attachment: scroll;
    }

    .card,
    .stat-item {
        will-change: transform;
    }
}

/* 移动端触摸反馈 */
@media (max-width: 768px) {
    .touch-feedback {
        position: relative;
        overflow: hidden;
    }

    .touch-feedback::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 100px;
        height: 100px;
        background: radial-gradient(circle, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0) 70%);
        transform: translate(-50%, -50%) scale(0);
        opacity: 0;
        transition: transform 0.3s ease-out, opacity 0.3s ease-out;
    }

    .touch-feedback:active::after {
        transform: translate(-50%, -50%) scale(2);
        opacity: 1;
    }
}

/* 移动端加载优化 */
@media (max-width: 768px) {
    .loading {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--background-light);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 9999;
    }

    .loading-spinner {
        width: 40px;
        height: 40px;
        border: 3px solid rgba(var(--primary-rgb), 0.1);
        border-top-color: var(--primary-color);
        border-radius: 50%;
        animation: spin 1s linear infinite;
    }
}

/* 移动端滚动优化 */
@media (max-width: 768px) {
    .smooth-scroll {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }

    .scroll-snap-container {
        scroll-snap-type: y mandatory;
        overflow-y: scroll;
        height: 100vh;
    }

    .scroll-snap-item {
        scroll-snap-align: start;
        height: 100vh;
    }
}

/* 移动端字体优化 */
@media (max-width: 768px) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
    }
}

/* 移动端深色模式优化 */
@media (max-width: 768px) and (prefers-color-scheme: dark) {
    .navbar,
    .nav-controls {
        background: rgba(15, 23, 42, 0.8);
    }

    .card {
        background: rgba(30, 41, 59, 0.8);
    }

    .touch-feedback::after {
        background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 70%);
    }
}