/* 隐印 - 简化版样式 */

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
}

/* FAQ 手风琴 */
.faq-item.active .faq-answer {
    display: block !important;
}

.faq-item.active .fa-chevron-down {
    transform: rotate(180deg);
}

/* 代码样式 */
code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0A0F2C;
}

::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* 选中文字 */
::selection {
    background: rgba(6, 182, 212, 0.3);
    color: #fff;
}

/* 演示卡片样式 */
.demo-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.demo-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(6, 182, 212, 0.15);
}

/* ============================================
   视频预览组件 - 重构版
   ============================================ */

.video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 0.75rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.video-player {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
    display: block;
}

.video-player::-webkit-media-controls-panel {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
}

.video-player::-webkit-media-controls-play-button,
.video-player::-webkit-media-controls-mute-button,
.video-player::-webkit-media-controls-fullscreen-button {
    filter: invert(1) brightness(1.2);
    opacity: 0.9;
    transition: opacity 0.2s ease;
}

.video-player::-webkit-media-controls-play-button:hover,
.video-player::-webkit-media-controls-mute-button:hover,
.video-player::-webkit-media-controls-fullscreen-button:hover {
    opacity: 1;
    filter: invert(1) brightness(1.5);
}

.video-player::-webkit-media-controls-current-time-display,
.video-player::-webkit-media-controls-time-remaining-display {
    color: #fff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.video-player::-webkit-media-controls-timeline {
    filter: brightness(1.3);
}

.video-player::-webkit-media-controls-volume-slider {
    filter: brightness(1.2);
    background-color: rgba(255, 255, 255, 0.25) !important;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    cursor: pointer;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.video-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-wrapper.playing .video-overlay {
    opacity: 0;
    pointer-events: none;
}

.video-wrapper:not(.playing):hover .video-overlay {
    background: rgba(0, 0, 0, 0.15);
}

.play-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.play-btn i {
    margin-left: 4px;
}

.play-btn-cyan {
    background: rgba(6, 182, 212, 0.9);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
}

.play-btn-cyan:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(6, 182, 212, 0.5);
}

.play-btn-red {
    background: rgba(239, 68, 68, 0.9);
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
}

.play-btn-red:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(239, 68, 68, 0.5);
}

/* ============================================
   图片媒体容器
   ============================================ */

.media-container {
    position: relative;
    background: #000;
    border-radius: 0.75rem;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

.media-container img {
    transition: transform 0.3s ease;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.media-container:hover img {
    transform: scale(1.02);
}

/* 图片放大模态框 */
#image-modal {
    backdrop-filter: blur(8px);
    animation: fadeIn 0.2s ease;
}

#image-modal img {
    animation: zoomIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 红字水印标识动画 */
.demo-card .absolute span {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 0.9;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .demo-card {
        margin-bottom: 1rem;
    }
    
    .video-wrapper {
        aspect-ratio: 16/9;
    }
    
    .play-btn {
        width: 56px;
        height: 56px;
        font-size: 1.25rem;
    }
}

/* Firefox 视频控件样式 */
.video-player::-moz-media-controls-panel {
    background: rgba(0, 0, 0, 0.8);
}

.video-player::-moz-media-controls-play-button,
.video-player::-moz-media-controls-mute-button,
.video-player::-moz-media-controls-fullscreen-button {
    filter: invert(1) brightness(1.2);
}