/* ===================================
   企业官网样式 - 移动端优先
   =================================== */

/* --- 导航栏样式 --- */
.glass-nav {
    background: rgba(5, 10, 20, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* 菜单按钮 */
#menu-btn {
    transition: transform 0.3s ease;
}

#menu-btn:active {
    transform: scale(0.95);
}

/* 移动端全屏菜单 */
#mobile-menu {
    will-change: transform;
}

/* 菜单链接动画 */
.menu-link {
    position: relative;
    display: inline-block;
    transition: color 0.3s ease;
}

.menu-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #38bdf8;
    transition: width 0.3s ease;
}

.menu-link:hover::after {
    width: 100%;
}

/* 发光文字效果 */
.glow-text {
    text-shadow: 0 0 10px rgba(56, 189, 248, 0.5),
                 0 0 20px rgba(56, 189, 248, 0.3);
}

/* --- 官网容器布局 --- */
#website-container {
    scroll-behavior: smooth;
}

/* 页面内边距 */
.page-section {
    min-height: calc(100vh - 4rem);
    padding-bottom: 2rem;
}

/* 标题样式 */
.section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    border-left: 4px solid #38bdf8;
    padding-left: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: baseline;
}

/* --- 空状态占位 --- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding: 3rem 1rem;
    border: 1px dashed rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.empty-state i {
    opacity: 0.3;
}

/* --- 玻璃卡片效果 --- */
.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- 轮播图样式 --- */
.carousel-container {
    background: #000;
    position: relative;
    overflow: hidden;
}

#carousel-track {
    display: flex;
    transition: transform 0.5s ease-out;
}

/* 轮播项容器 */
.carousel-item {
    width: 100%;
    height: 100%;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.carousel-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 标题覆盖层 */
.carousel-title-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.6) 60%, transparent 100%);
    color: white;
    padding: 2rem 1.5rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    pointer-events: none;
}

@media (min-width: 768px) {
    .carousel-title-overlay {
        font-size: 1.25rem;
        padding: 3rem 2rem 1.5rem;
    }
}

/* 视频播放图标 */
.video-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(56, 189, 248, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.5);
}

.carousel-item:hover .video-play-icon {
    transform: translate(-50%, -50%) scale(1.1);
    background: rgba(56, 189, 248, 1);
}

/* 轮播图指示点 */
#carousel-dots {
    display: flex;
    gap: 8px;
    z-index: 10;
}

.dot {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: all 0.3s ease;
    cursor: pointer;
}

.dot.active {
    background: #38bdf8;
    width: 24px;
    border-radius: 4px;
}

/* --- 新闻列表卡片 --- */
.news-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.news-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateX(4px);
}

.news-date {
    color: #38bdf8;
    font-size: 0.75rem;
    margin-bottom: 0.25rem;
}

.news-title {
    color: white;
    font-weight: bold;
}

/* --- 视频播放模态窗口 --- */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-modal.active {
    opacity: 1;
}

.video-modal-content {
    width: 90%;
    max-width: 900px;
    background: rgba(5, 10, 20, 0.95);
    border-radius: 12px;
    border: 1px solid rgba(56, 189, 248, 0.3);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.video-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: rgba(56, 189, 248, 0.1);
    border-bottom: 1px solid rgba(56, 189, 248, 0.2);
}

.video-modal-header h3 {
    color: white;
    font-size: 1.125rem;
    margin: 0;
    flex: 1;
}

.video-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.video-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #38bdf8;
}

.video-modal-body {
    padding: 0;
}

.video-modal-body video {
    display: block;
    background: #000;
}

/* --- 响应式设计 --- */

/* 平板及以上 */
@media (min-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .carousel-container {
        border-radius: 16px;
    }

    /* 保持汉堡菜单在所有设备上可见 */
}

/* 桌面端 */
@media (min-width: 1024px) {
    .page-section {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

/* 超大屏幕 */
@media (min-width: 1280px) {
    #website-container {
        max-width: 1280px;
        margin: 0 auto;
    }
}

/* --- 动画性能优化 --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* --- 深色主题变量（可选，方便后续扩展） --- */
:root {
    --nav-bg: rgba(5, 10, 20, 0.8);
    --primary-color: #38bdf8;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
}