style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(https://s2.loli.net/2025/02/23/71FG6jSdPWXyEQR.png) center/cover no-repeat;
    z-index: -1;
}

header {
    position: relative;
    padding: 4rem 2rem;
    text-align: center;
    z-index: 2;
    backdrop-filter: blur(5px);
}

h1 {
    color: white;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 2rem;
    z-index: 1;
    position: relative;
}

.iframe-container {
    position: relative;
    width: 80%;
    max-width: 1200px;
    margin: 2rem auto;
    background: rgba(0,0,0,0.8);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    opacity: 1; /* 从 0 改为 1 */
    transition: transform 0.3s ease; /* 移除 opacity 过渡 */
}

.iframe-container.loading {
    opacity: 1; /* 保持加载时也不透明 */
    transform: scale(0.98);
}

.iframe-container::before {
    content: "";
    display: block;
    padding-top: 56.25%;
}

#resultFrame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.input-group {
    display: flex;
    gap: 1rem;
    max-width: 1200px;
    width: 80%;
    margin: 0 auto 2rem;
}

.line-select {
    position: relative;
    flex: 0 1 200px;
}

#lineBtn, #parseBtn, input {
    height: 50px;
    border: none;
    border-radius: 25px;
    padding: 0 1.5rem;
    font-size: 1rem;
    transition: all 0.3s;
}

#lineBtn {
    background: #4CAF50;
    color: white;
    width: 100%;
    cursor: pointer;
}

#videoUrl {
    flex: 1;
    background: rgba(255,255,255,0.9);
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

#parseBtn {
    background: #2196F3;
    color: white;
    padding: 0 2rem;
    cursor: pointer;
}

.line-options {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: none;
    z-index: 1;
    max-height: 300px;
    overflow-y: auto;
}

.line-option {
    padding: 1rem;
    cursor: pointer;
    transition:  0.3s;
}

.line-option:hover {
    background: #f5f5f5;
}

footer {
    margin-top: auto;
    text-align: center;
    padding: 1.5rem;
    color: rgba(255,255,255,0.8);
    width: 100%;
    position: relative;
    z-index: 2;
    backdrop-filter: blur(2px);
}

@media (max-width: 768px) {
    #videoUrl {
        background: rgba(255,255,255,0.9) !important; /* 强制保留背景 */
        box-shadow: 0 2px 6px rgba(0,0,0,0.1) !important; /* 强制保留阴影 */
        flex: none; /* 禁用flex属性 */
    }
    #parseBtn {
        display: block;
        flex: none; /* 防止flex布局压缩按钮 */
    }
    .line-select {
        flex: none; /* 禁用PC端的flex设置 */
    }
}
#parseBtn {
    background: #2196F3;
    color: white;
    padding: 0 2rem;
    cursor: pointer;
}

.line-options {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: none;
    z-index: 1;
    max-height: 300px;
    overflow-y: auto;
}

.line-option {
    padding: 1rem;
    cursor: pointer;
    transition:  0.3s;
}

.line-option:hover {
    background: #f5f5f5;
}

footer {
    margin-top: auto;
    text-align: center;
    padding: 1.5rem;
    color: rgba(255,255,255,0.8);
    width: 100%;
    position: relative;
    z-index: 2;
    backdrop-filter: blur(2px);
}
@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
        gap: 1.5rem;  /* 增加间距 */
    }
    
    /* 统一移动端输入元素样式 */
    .line-select, 
    #videoUrl, 
    #parseBtn {
        width: 100%;
        height: 50px;  /* 保持与PC一致的高度 */
        border-radius: 25px;  /* 保持圆角效果 */
    }
    
    /* 按钮样式增强 */
    #parseBtn {
        padding: 0 2rem;  /* 保持PC端的内边距 */
        font-size: 1.1rem;  /* 适当放大文字 */
    }
    
    /* 优化iframe容器显示 */
    .iframe-container {
        width: 100%;  /* 使用全宽显示 */
        margin: 1.5rem auto;
    }
    
    header {
        padding: 2rem 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
}