/* 移动端优化样式 - Mobile Optimized Styles */

/* 移动端基础优化 */
@media (max-width: 768px) {
    /* 导航优化 */
    .header .container {
        padding: 0 15px;
    }
    
    .logo span {
        font-size: 16px;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block !important;
    }
    
    .header-actions {
        gap: 10px;
    }
    
    .search-box {
        display: none;
    }
    
    .search-box.mobile-visible {
        display: flex;
        position: absolute;
        top: 70px;
        left: 15px;
        right: 15px;
        background: white;
        padding: 10px;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        z-index: 1000;
    }

    /* Hero区域优化 */
    .hero-section {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .hero-title .title-sub {
        font-size: 18px;
    }
    
    .hero-title .title-main {
        font-size: 32px;
    }
    
    .hero-desc {
        font-size: 15px;
        padding: 0 10px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .hero-visual {
        display: none;
    }

    /* 功能卡片优化 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-card {
        padding: 20px;
    }

    /* 技术资料优化 */
    .tech-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .tech-tab {
        font-size: 13px;
        padding: 8px 12px;
    }
    
    .tech-filter-bar {
        flex-direction: column;
        gap: 10px;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-card {
        padding: 15px;
    }

    /* 供应商优化 */
    .supplier-filter {
        padding: 15px;
    }
    
    .filter-chips {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .chip {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    .supplier-grid {
        grid-template-columns: 1fr;
    }

    /* 视频区域优化 */
    .video-categories {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .video-cat {
        font-size: 13px;
        padding: 8px 12px;
    }
    
    .video-main {
        flex-direction: column;
    }
    
    .video-player-wrapper {
        width: 100%;
    }
    
    .video-chapters {
        width: 100%;
        max-height: 300px;
        overflow-y: auto;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }

    /* 测评页面优化 */
    .quiz-container {
        padding: 15px;
    }
    
    .question-options {
        grid-template-columns: 1fr;
    }
    
    .quiz-nav {
        flex-direction: column;
        gap: 15px;
    }
    
    .quiz-nav-buttons {
        display: flex;
        gap: 10px;
        justify-content: center;
    }

    /* 个人中心优化 */
    .profile-container {
        padding: 15px;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    
    .profile-tab {
        white-space: nowrap;
    }

    /* 认证页面优化 */
    .auth-container {
        padding: 20px 15px;
    }
    
    .auth-card {
        padding: 30px 20px;
    }

    /* 通用优化 */
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-desc {
        font-size: 14px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .btn-lg {
        padding: 12px 24px;
        font-size: 15px;
    }
}

/* 触摸优化 - Touch Optimization */
@media (hover: none) and (pointer: coarse) {
    /* 增加触摸目标大小 */
    button, 
    .btn, 
    a, 
    input[type="submit"],
    .nav-link,
    .mobile-nav-link {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* 移除悬停效果，改为激活效果 */
    .btn:hover {
        transform: none;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    /* 增加列表项触摸反馈 */
    .tech-card:active,
    .supplier-card:active,
    .video-card:active {
        background: #f0f9ff;
    }
}

/* 横屏优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero-section {
        padding: 80px 0 40px;
    }
    
    .hero-title .title-main {
        font-size: 28px;
    }
    
    .video-player-wrapper {
        max-height: 60vh;
    }
}

/* 平板优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .supplier-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动端滑动手势 */
.carousel-container {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.carousel-container::-webkit-scrollbar {
    display: none;
}

.carousel-item {
    scroll-snap-align: start;
    flex-shrink: 0;
}

/* 移动端底部导航栏（可选） */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 10px 0;
    padding-bottom: env(safe-area-inset-bottom);
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }
}

.mobile-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 11px;
    padding: 5px 10px;
}

.mobile-bottom-nav a.active {
    color: var(--primary);
}

.mobile-bottom-nav i {
    font-size: 20px;
}

/* 移动端下拉刷新效果 */
.pull-to-refresh {
    position: relative;
    overflow: hidden;
}

.pull-indicator {
    position: absolute;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: top 0.3s;
}

.pull-indicator.visible {
    top: 10px;
}

/* 移动端优化完成 */