/**
 * 海芯威视官网 - 样式修复文件
 * ========================
 * 修复图片加载错误和其他样式问题
 */

/* ========================
   图片错误处理
   ======================== */

/* 图片加载错误时的回退样式 - 仅针对特定区域的图片 */
.product-card__image img,
.news-card__image img,
.about-section__image img,
.about-intro__image img,
.activity-card__image img {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
}

/* 产品卡片图片容器 */
.product-card__image {
    background: var(--color-bg-secondary);
}

.product-card__image img {
    min-height: 200px;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

/* 新闻卡片图片容器 */
.news-card__image {
    background: var(--color-bg-secondary);
}

.news-card__image img {
    min-height: 200px;
    object-fit: cover;
}

/* 关于我们区域图片 */
.about-section__image {
    background: var(--color-bg-secondary);
}

.about-section__image img {
    min-height: 300px;
    object-fit: cover;
}

/* 产品图库图片 */
.product-gallery__main {
    background: var(--color-bg-secondary);
}

.product-gallery__main img {
    min-height: 300px;
    object-fit: cover;
}

/* 图库缩略图 */
.product-gallery__thumb {
    background: var(--color-bg-secondary);
}

/* ========================
   滚动条样式优化
   ======================== */

/* Webkit 浏览器滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}

/* Firefox 滚动条 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-text-tertiary) var(--color-bg-secondary);
}

/* ========================
   表单元素样式修复
   ======================== */

/* 输入框焦点样式 */
input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

/* 按钮焦点样式 */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================
   图片懒加载占位
   ======================== */

img[loading="lazy"] {
    background: linear-gradient(
        90deg,
        var(--color-bg-secondary) 25%,
        var(--color-bg-tertiary) 50%,
        var(--color-bg-secondary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

img[loading="lazy"].loaded {
    animation: none;
    background: none;
}

/* ========================
   响应式图片处理
   ======================== */

/* 确保图片不会溢出容器 */
img {
    max-width: 100%;
    height: auto;
}

/* ========================
   搜索框样式修复
   ======================== */

.search-box {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--space-4) 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.search-box--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.search-form {
    display: flex;
    gap: var(--space-3);
}

.search-form__input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: white;
}

.search-form__submit {
    padding: var(--space-3) var(--space-5);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-form__submit:hover {
    background: var(--color-primary-dark);
}

.search-close {
    position: absolute;
    top: 50%;
    right: var(--container-padding);
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: var(--text-2xl);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.search-close:hover {
    color: var(--color-text-primary);
}

/* ========================
   子菜单显示修复
   ======================== */

.nav-submenu {
    z-index: 1001;
}

/* 确保子菜单在移动设备上正确显示 */
@media (max-width: 768px) {
    .nav-submenu {
        z-index: auto;
    }
}

/* ========================
   打印样式优化
   ======================== */

@media print {
    img {
        break-inside: avoid;
    }
    
    .product-card__image,
    .news-card__image {
        min-height: auto;
    }
}

/* ========================
   高对比度模式支持
   ======================== */

@media (prefers-contrast: high) {
    .btn--primary {
        border: 2px solid currentColor;
    }
    
    .nav-menu__link--active {
        border: 2px solid var(--color-primary);
    }
}

/* ========================
   减少动画偏好支持
   ======================== */

@media (prefers-reduced-motion: reduce) {
    img[loading="lazy"] {
        animation: none;
    }
}