/* 移动端优化样式 - 专业版 */

/* ==================== 移动端基础优化 ==================== */
@media screen and (max-width: 768px) {
    * {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
    }
    
    html {
        font-size: 14px;
        -webkit-text-size-adjust: 100%;
    }
    
    body {
        font-size: 14px;
        line-height: 1.5;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }
}

/* ==================== 头部导航移动端优化 ==================== */
@media screen and (max-width: 768px) {
    .header {
        padding: 4px 8px !important;
        min-height: 20px !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 1000 !important;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1) !important;
    }
    
    .marquee-container {
        height: 18px !important;
        overflow: hidden !important;
    }
    
    .marquee-text {
        font-size: 13px !important;
        font-weight: 500 !important;
        line-height: 18px !important;
        padding: 0 10px !important;
    }
}

/* ==================== 标签页移动端优化 ==================== */
@media screen and (max-width: 768px) {
    .tabs {
        padding: 5px !important;
        margin: 10px 15px !important;
        border-radius: 12px !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
    }
    
    .tabs::-webkit-scrollbar {
        display: none !important;
    }
    
    .tab {
        min-width: 80px !important;
        min-height: 18px !important;
        padding: 12px 16px !important;
        font-size: 13px !important;
        font-weight: 600 !important;
        border-radius: 8px !important;
        white-space: nowrap !important;
        text-align: center !important;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
        margin: 0 3px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    .tab.active {
        transform: scale(1.05) !important;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
    }
    
    .tab:active {
        transform: scale(0.98) !important;
    }
}

/* ==================== 网格布局移动端优化 ==================== */
@media screen and (max-width: 768px) {
    .grid {
        grid-template-columns: repeat(5, 1fr) !important;  /* 保持5列布局 */
        gap: 8px 4px !important;  /* 缩小间距适应小屏幕 */
        padding: 8px !important;
        margin: 0 5px !important;
    }
    
    .grid-card {
        border-radius: 12px !important;
        padding: 0 !important;
        overflow: hidden !important;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
        position: relative !important;
        will-change: transform !important;
    }
    
    .grid-card:active {
        transform: scale(0.98) !important;
        box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
    }
    
    .grid-img {
        width: 100% !important;
        height: auto !important;  /* 自动高度保持比例 */
        aspect-ratio: 1/1 !important;  /* 保持正方形 */
        object-fit: cover !important;
        border-radius: 8px 8px 0 0 !important;
    }
    
    .grid-content {
        padding: 12px !important;
    }
    
    .grid-title {
        font-size: 13px !important;
        font-weight: 600 !important;
        line-height: 1.3 !important;
        margin-bottom: 6px !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        display: -webkit-box !important;
        -webkit-line-clamp: 2 !important;
        -webkit-box-orient: vertical !important;
    }
    
    .grid-desc {
        font-size: 11px !important;
        opacity: 0.7 !important;
        margin-bottom: 8px !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }
    
    .grid-btn {
        width: 100% !important;
        min-height: 18px !important;
        padding: 2px 6px !important;
        font-size: 7px !important;
        font-weight: 600 !important;
        border-radius: 6px !important;
        border: none !important;
        cursor: pointer !important;
        transition: all 0.2s ease !important;
        text-transform: uppercase !important;
        letter-spacing: 0.5px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    .grid-btn:active {
        transform: scale(0.96) !important;
    }
}

/* ==================== 超小屏设备优化 ==================== */
@media screen and (max-width: 480px) {
    html {
        font-size: 13px !important;
    }
    
    .grid {
        grid-template-columns: repeat(5, 1fr) !important;  /* 保持5列布局 */
        gap: 5px 3px !important;  /* 进一步缩小间距 */
        padding: 5px !important;
    }
    
    /* .grid-img 使用上层定义的aspect-ratio，不需要额外设置 */
    
    .tab {
        min-width: 70px !important;
        padding: 10px 12px !important;
        font-size: 7px !important;
    }
}

/* ==================== 横屏模式优化 ==================== */
@media screen and (max-width: 768px) and (orientation: landscape) {
    .header {
        min-height: 16px !important;
        padding: 3px 6px !important;
    }
    
    .marquee-container {
        height: 14px !important;
    }
    
    .marquee-text {
        line-height: 14px !important;
        font-size: 7px !important;
    }
    
    .grid {
        grid-template-columns: repeat(5, 1fr) !important;  /* 横屏也保持5列 */
    }
}

/* ==================== 触摸反馈优化 ==================== */
@media screen and (max-width: 768px) {
    .touch-feedback {
        position: relative !important;
        overflow: hidden !important;
    }
    
    .touch-feedback::before {
        content: '' !important;
        position: absolute !important;
        top: 50% !important;
        left: 50% !important;
        width: 0 !important;
        height: 0 !important;
        border-radius: 50% !important;
        background: rgba(255,255,255,0.2) !important;
        transform: translate(-50%, -50%) !important;
        transition: width 0.3s, height 0.3s !important;
        pointer-events: none !important;
    }
    
    .touch-feedback:active::before {
        width: 100px !important;
        height: 100px !important;
    }
}

/* ==================== 可访问性增强 ==================== */
@media screen and (max-width: 768px) {
    button:focus, input:focus, select:focus {
        outline: 2px solid var(--accent, #19F980) !important;
        outline-offset: 2px !important;
    }
    
    @media (prefers-reduced-motion: reduce) {
        *, *::before, *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }
}