/* VIP专属权益界面多端适配优化 */

/* ==========================================================================
   VIP界面核心响应式布局优化
   ========================================================================== */

/* 超大屏幕优化 (≥1400px) */
@media screen and (min-width: 1400px) {
    [data-anchor="Vip"] .container {
        max-width: 1320px;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 25px;
        max-width: 1200px;
        margin: 30px auto 0;
    }
    
    .privilege-item {
        height: 140px;
        padding: 25px 20px;
        border-radius: 18px;
    }
    
    .privilege-icon {
        font-size: 2.2rem;
        margin-bottom: 12px;
    }
    
    .privilege-item h5 {
        font-size: 1.1rem;
        font-weight: 700;
    }
    
    .privilege-item p {
        font-size: 0.75rem;
        padding: 18px 15px;
    }
}

/* 大屏幕优化 (1200px - 1399px) */
@media screen and (min-width: 1200px) and (max-width: 1399px) {
    .privilege-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 22px;
        margin-top: 28px;
    }
    
    .privilege-item {
        height: 130px;
        padding: 22px 18px;
        border-radius: 16px;
    }
    
    .privilege-icon {
        font-size: 2.1rem;
        margin-bottom: 11px;
    }
    
    .privilege-item h5 {
        font-size: 1.05rem;
        font-weight: 650;
    }
    
    .privilege-item p {
        font-size: 0.72rem;
        padding: 16px 14px;
    }
}

/* iPad Pro 横屏优化 (1024px - 1199px) */
@media screen and (min-width: 1024px) and (max-width: 1199px) and (orientation: landscape) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 60px 40px;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 18px;
        margin-top: 25px;
    }
    
    .privilege-item {
        height: 115px;
        padding: 18px 15px;
        border-radius: 14px;
    }
    
    .privilege-icon {
        font-size: 1.9rem;
        margin-bottom: 9px;
    }
    
    .privilege-item h5 {
        font-size: 0.98rem;
        font-weight: 600;
    }
    
    .privilege-item p {
        font-size: 0.68rem;
        padding: 14px 12px;
    }
}

/* iPad 标准尺寸优化 (768px - 1023px) */
@media screen and (min-width: 768px) and (max-width: 1023px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 50px 30px;
    }
    
    [data-anchor="Vip"] .vlt-section__title {
        font-size: 2.5rem;
        margin-bottom: 18px;
        text-align: center;
    }
    
    [data-anchor="Vip"] .vlt-section__subtitle {
        font-size: 1.1rem;
        margin-bottom: 28px;
        text-align: center;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        margin-top: 22px;
    }
    
    .privilege-item {
        height: 105px;
        padding: 16px 13px;
        border-radius: 13px;
        /* iPad触摸优化 */
        -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
        touch-action: manipulation;
    }
    
    .privilege-icon {
        font-size: 1.7rem;
        margin-bottom: 8px;
    }
    
    .privilege-item h5 {
        font-size: 0.92rem;
        font-weight: 600;
        line-height: 1.2;
    }
    
    .privilege-item p {
        font-size: 0.62rem;
        padding: 12px 10px;
        line-height: 1.3;
    }
    
    /* iPad触摸反馈优化 */
    .privilege-item:active {
        transform: scale(0.96);
        transition: transform 0.15s ease;
    }
}

/* 大屏手机横屏优化 (667px - 767px) */
@media screen and (min-width: 667px) and (max-width: 767px) and (orientation: landscape) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 40px 25px;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
        margin-top: 20px;
    }
    
    .privilege-item {
        height: 85px;
        padding: 12px 10px;
        border-radius: 11px;
    }
    
    .privilege-icon {
        font-size: 1.4rem;
        margin-bottom: 5px;
    }
    
    .privilege-item h5 {
        font-size: 0.8rem;
        font-weight: 600;
    }
    
    .privilege-item p {
        font-size: 0.55rem;
        padding: 8px 6px;
    }
}

/* 标准手机竖屏优化 (414px - 767px) */
@media screen and (min-width: 414px) and (max-width: 767px) and (orientation: portrait) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 35px 20px;
    }
    
    [data-anchor="Vip"] .vlt-section__title {
        font-size: 2.2rem;
        margin-bottom: 15px;
        text-align: center;
        line-height: 1.2;
    }
    
    [data-anchor="Vip"] .vlt-section__subtitle {
        font-size: 1rem;
        margin-bottom: 25px;
        text-align: center;
        opacity: 0.9;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
        margin-top: 20px;
        padding: 0 5px;
    }
    
    .privilege-item {
        height: 95px;
        padding: 14px 12px;
        border-radius: 12px;
        /* 移动端触摸优化 */
        -webkit-tap-highlight-color: rgba(102, 126, 234, 0.3);
        touch-action: manipulation;
        cursor: pointer;
    }
    
    .privilege-icon {
        font-size: 1.5rem;
        margin-bottom: 6px;
    }
    
    .privilege-item h5 {
        font-size: 0.85rem;
        font-weight: 600;
        line-height: 1.2;
    }
    
    .privilege-item p {
        font-size: 0.58rem;
        padding: 10px 8px;
        line-height: 1.3;
    }
    
    /* 移动端交互优化 */
    .privilege-item:active {
        transform: scale(0.97);
        transition: transform 0.1s ease;
    }
}

/* 小屏手机优化 (375px - 413px) */
@media screen and (min-width: 375px) and (max-width: 413px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 30px 18px;
    }
    
    [data-anchor="Vip"] .vlt-section__title {
        font-size: 2rem;
        margin-bottom: 14px;
    }
    
    [data-anchor="Vip"] .vlt-section__subtitle {
        font-size: 0.95rem;
        margin-bottom: 22px;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-top: 18px;
        padding: 0 3px;
    }
    
    .privilege-item {
        height: 90px;
        padding: 12px 10px;
        border-radius: 11px;
    }
    
    .privilege-icon {
        font-size: 1.4rem;
        margin-bottom: 5px;
    }
    
    .privilege-item h5 {
        font-size: 0.8rem;
        line-height: 1.1;
    }
    
    .privilege-item p {
        font-size: 0.55rem;
        padding: 9px 7px;
    }
}

/* 超小屏手机优化 (320px - 374px) */
@media screen and (min-width: 320px) and (max-width: 374px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 25px 15px;
    }
    
    [data-anchor="Vip"] .vlt-section__title {
        font-size: 1.8rem;
        margin-bottom: 12px;
        line-height: 1.1;
    }
    
    [data-anchor="Vip"] .vlt-section__subtitle {
        font-size: 0.9rem;
        margin-bottom: 20px;
        line-height: 1.4;
    }
    
    .privilege-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-top: 16px;
        padding: 0 2px;
    }
    
    .privilege-item {
        height: 80px;
        padding: 10px 15px;
        border-radius: 10px;
        display: flex;
        align-items: center;
        text-align: left;
    }
    
    .privilege-icon {
        font-size: 1.6rem;
        margin-bottom: 0;
        margin-right: 15px;
        flex-shrink: 0;
    }
    
    .privilege-item h5 {
        font-size: 0.85rem;
        margin-bottom: 0;
        flex: 1;
        line-height: 1.2;
    }
    
    .privilege-item p {
        font-size: 0.6rem;
        padding: 10px 15px;
        left: 0;
        right: 0;
        text-align: center;
    }
}

/* 极小屏幕优化 (<320px) */
@media screen and (max-width: 319px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 20px 12px;
    }
    
    [data-anchor="Vip"] .vlt-section__title {
        font-size: 1.6rem;
        margin-bottom: 10px;
    }
    
    [data-anchor="Vip"] .vlt-section__subtitle {
        font-size: 0.85rem;
        margin-bottom: 18px;
    }
    
    .privilege-grid {
        grid-template-columns: 1fr;
        gap: 8px;
        margin-top: 14px;
    }
    
    .privilege-item {
        height: 75px;
        padding: 8px 12px;
        border-radius: 8px;
        display: flex;
        align-items: center;
        text-align: left;
    }
    
    .privilege-icon {
        font-size: 1.4rem;
        margin-right: 12px;
    }
    
    .privilege-item h5 {
        font-size: 0.8rem;
        flex: 1;
    }
    
    .privilege-item p {
        font-size: 0.55rem;
        padding: 8px 12px;
    }
}

/* ==========================================================================
   VIP界面特殊设备适配
   ========================================================================== */

/* iPhone 14 Pro Max / 15 Pro Max 优化 */
@media screen and (width: 430px) and (height: 932px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 40px 25px;
        padding-top: max(40px, env(safe-area-inset-top) + 20px);
    }
    
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .privilege-item {
        height: 100px;
        padding: 16px 14px;
    }
}

/* iPhone 14 Pro / 15 Pro 优化 */
@media screen and (width: 393px) and (height: 852px) {
    [data-anchor="Vip"] .vlt-section__content {
        padding: 35px 22px;
        padding-top: max(35px, env(safe-area-inset-top) + 15px);
    }
    
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    
    .privilege-item {
        height: 95px;
        padding: 14px 12px;
    }
}

/* iPhone SE 3rd Gen 优化 */
@media screen and (width: 375px) and (height: 667px) {
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .privilege-item {
        height: 85px;
        padding: 10px 8px;
    }
    
    .privilege-icon {
        font-size: 1.3rem;
    }
    
    .privilege-item h5 {
        font-size: 0.75rem;
    }
}

/* 折叠屏设备优化 */
@media screen and (min-width: 768px) and (max-width: 1024px) and (min-aspect-ratio: 1/1) {
    .privilege-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        max-width: 900px;
        margin: 25px auto 0;
    }
    
    .privilege-item {
        height: 110px;
        padding: 18px 15px;
    }
}

/* ==========================================================================
   VIP界面性能与用户体验优化
   ========================================================================== */

/* 触摸设备专项优化 */
@media (hover: none) and (pointer: coarse) {
    .privilege-item {
        /* 增强触摸反馈 */
        -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
        touch-action: manipulation;
        user-select: none;
        -webkit-user-select: none;
        cursor: pointer;
        /* 确保点击区域足够大 */
        min-height: 48px;
        position: relative;
        z-index: 1;
    }
    
    .privilege-item:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
    
    /* 禁用悬停效果，使用点击激活 */
    .privilege-item:hover {
        transform: none;
    }
    
    .privilege-item:hover p {
        opacity: 0;
        visibility: hidden;
    }
    
    .privilege-item.active p {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        transition: all 0.3s ease;
    }
    
    /* 移动端激活状态样式增强 */
    .privilege-item.active {
        background: rgba(102, 126, 234, 0.1);
        border-color: rgba(102, 126, 234, 0.3);
        transform: scale(1.02);
    }
    
    .privilege-item.active .privilege-icon {
        transform: scale(1.1);
        color: #667eea;
    }
    
    .privilege-item.active h5 {
         color: #667eea;
     }
 }

/* 移动端交互类 - 通用样式 */
.privilege-item.mobile-interaction {
    cursor: pointer;
    -webkit-tap-highlight-color: rgba(102, 126, 234, 0.2);
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    min-height: 48px;
    position: relative;
    z-index: 1;
}

.privilege-item.mobile-interaction:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
}

.privilege-item.mobile-interaction.active {
    background: rgba(102, 126, 234, 0.1);
    border-color: rgba(102, 126, 234, 0.3);
    transform: scale(1.02);
}

.privilege-item.mobile-interaction.active .privilege-icon {
    transform: scale(1.1);
    color: #667eea;
}

.privilege-item.mobile-interaction.active h5 {
    color: #667eea;
}

.privilege-item.mobile-interaction.active p {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.3s ease;
}

/* 禁用移动端的悬停效果 */
.privilege-item.mobile-interaction:hover {
    transform: none;
}

.privilege-item.mobile-interaction:hover p {
    opacity: 0;
    visibility: hidden;
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .privilege-item {
        border-width: 0.5px;
    }
    
    .privilege-icon {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 深色模式适配 */
@media (prefers-color-scheme: dark) {
    .privilege-item {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .privilege-item:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.2);
    }
}

/* 减少动画偏好适配 */
@media (prefers-reduced-motion: reduce) {
    .privilege-item,
    .privilege-icon,
    .privilege-item h5,
    .privilege-item p {
        transition: none;
        animation: none;
    }
    
    .privilege-item:hover {
        transform: none;
    }
}

/* 低带宽设备优化 */
@media (prefers-reduced-data: reduce) {
    .privilege-item::before {
        display: none;
    }
    
    .privilege-item {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

/* ==========================================================================
   VIP界面可访问性优化
   ========================================================================== */

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .privilege-item {
        border-width: 2px;
        border-color: rgba(255, 255, 255, 0.8);
    }
    
    .privilege-item h5 {
        color: #ffffff;
        font-weight: 700;
    }
    
    .privilege-item p {
        color: rgba(255, 255, 255, 0.95);
        background: rgba(0, 0, 0, 0.9);
    }
}

/* 焦点可见性增强 */
.privilege-item:focus-visible {
    outline: 2px solid #667eea;
    outline-offset: 2px;
    border-color: #667eea;
}

/* 键盘导航支持 */
.privilege-item[tabindex] {
    cursor: pointer;
}

.privilege-item[tabindex]:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* ==========================================================================
   VIP界面打印样式优化
   ========================================================================== */

@media print {
    [data-anchor="Vip"] .vlt-section__projects-background {
        display: none;
    }
    
    .privilege-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        break-inside: avoid;
    }
    
    .privilege-item {
        background: white;
        border: 1px solid #ccc;
        color: black;
        height: auto;
        padding: 15px;
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .privilege-item h5 {
        color: black;
        font-weight: bold;
    }
    
    .privilege-item p {
        color: #333;
        position: static;
        opacity: 1;
        visibility: visible;
        background: none;
        padding: 5px 0;
        margin-top: 5px;
    }
    
    .privilege-icon {
        display: none;
    }
}