/**
 * Zibll Login Content Protector - Frontend Styles
 * 
 * 为子比主题专门适配的前台样式表
 * 提供响应式设计和美观的视觉效果
 *
 * @package Zibll_Login_Content_Protector
 * @version 1.0.0
 */

/* ========================================
   基础容器样式
   ======================================== */

/**
 * 主容器样式
 * 确保在各种设备上都能正确显示
 */
.zlcp-container {
    width: 100%;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 15px;
    box-sizing: border-box;
}

/**
 * 保护内容的外包装
 */
.zlcp-protected-content {
    position: relative;
}

/* ========================================
   内容预览区域样式
   ======================================== */

/**
 * 预览区域容器
 * 使用模糊效果遮盖实际内容
 */
.zlcp-preview {
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    padding: 0;
    overflow: hidden;
}

/**
 * 预览内容样式
 * 通过模糊和透明度降低来隐藏实际内容
 */
.zlcp-preview-content {
    filter: blur(8px);
    opacity: 0.4;
    user-select: none;
    pointer-events: none;
    -webkit-user-select: none;
}

/* ========================================
   锁定卡片样式
   ======================================== */

/**
 * 锁定提示卡片主样式
 * 使用渐变背景增加视觉吸引力
 */
.zlcp-lock-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    color: #fff;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    margin: 30px 0;
    position: relative;
    overflow: hidden;
}

/**
 * 添加装饰性圆形背景
 */
.zlcp-lock-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    pointer-events: none;
}

/**
 * 锁定图标容器
 */
.zlcp-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
    animation: zlcp-float 3s ease-in-out infinite;
}

/**
 * 图标浮动动画
 */
@keyframes zlcp-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/**
 * 提示消息文本
 */
.zlcp-message {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 25px 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    line-height: 1.5;
}

/**
 * 登录按钮样式
 */
.zlcp-login-btn {
    display: inline-block;
    background: #fff;
    color: #667eea !important;
    padding: 14px 40px;
    border-radius: 50px;
    text-decoration: none !important;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}

/**
 * 登录按钮悬停效果
 */
.zlcp-login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    background: #f8f9fa;
}

/**
 * 登录按钮点击效果
 */
.zlcp-login-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* ========================================
   响应式设计
   ======================================== */

/**
 * 平板设备 (768px - 1024px)
 */
@media screen and (max-width: 1024px) {
    .zlcp-container {
        max-width: 90%;
    }
    
    .zlcp-lock-card {
        padding: 35px 25px;
    }
    
    .zlcp-message {
        font-size: 18px;
    }
}

/**
 * 大手机设备 (481px - 768px)
 */
@media screen and (max-width: 768px) {
    .zlcp-container {
        max-width: 95%;
        margin: 25px auto;
        padding: 0 10px;
    }
    
    .zlcp-lock-card {
        padding: 30px 20px;
        border-radius: 12px;
        margin: 20px 0;
    }
    
    .zlcp-icon {
        font-size: 40px;
        margin-bottom: 15px;
    }
    
    .zlcp-message {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .zlcp-login-btn {
        padding: 12px 30px;
        font-size: 15px;
    }
    
    .zlcp-preview {
        max-height: 250px;
    }
}

/**
 * 手机设备 (320px - 480px)
 */
@media screen and (max-width: 480px) {
    .zlcp-container {
        max-width: 100%;
        margin: 15px 0;
        padding: 0 10px;
    }
    
    .zlcp-lock-card {
        padding: 25px 15px;
        border-radius: 10px;
        margin: 15px 0;
    }
    
    .zlcp-icon {
        font-size: 36px;
        margin-bottom: 12px;
    }
    
    .zlcp-message {
        font-size: 15px;
        margin-bottom: 18px;
    }
    
    .zlcp-login-btn {
        padding: 10px 25px;
        font-size: 14px;
        width: 100%;
        max-width: 250px;
    }
    
    .zlcp-preview {
        max-height: 200px;
    }
    
    .zlcp-preview-content {
        filter: blur(6px);
    }
}

/**
 * 超小屏幕设备 (小于320px)
 */
@media screen and (max-width: 320px) {
    .zlcp-lock-card {
        padding: 20px 12px;
    }
    
    .zlcp-icon {
        font-size: 32px;
    }
    
    .zlcp-message {
        font-size: 14px;
    }
}

/* ========================================
   子比主题兼容性
   ======================================== */

/**
 * 子比主题文章内容区域适配
 */
.entry-content .zlcp-container,
.article-content .zlcp-container,
.post-content .zlcp-container {
    max-width: 100%;
}

/**
 * 子比主题容器内边距调整
 */
.zibll-post .zlcp-lock-card {
    margin-left: -15px;
    margin-right: -15px;
    border-radius: 0;
}

/**
 * 确保在子比主题的flex布局中正常显示
 */
.zlcp-lock-card {
    flex-shrink: 0;
}

/* ========================================
   动画效果
   ======================================== */

/**
 * 淡入动画
 */
@keyframes zlcp-fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.zlcp-container {
    animation: zlcp-fadeIn 0.5s ease-out;
}

/**
 * 脉冲动画
 */
@keyframes zlcp-pulse {
    0%, 100% {
        box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 10px 50px rgba(102, 126, 234, 0.5);
    }
}

.zlcp-lock-card {
    animation: zlcp-pulse 3s ease-in-out infinite;
}

/* ========================================
   打印样式
   ======================================== */

@media print {
    .zlcp-lock-card {
        background: #f0f0f0 !important;
        color: #333 !important;
        box-shadow: none;
        border: 2px solid #ccc;
    }
    
    .zlcp-lock-card::before {
        display: none;
    }
    
    .zlcp-login-btn {
        background: #f0f0f0 !important;
        color: #333 !important;
        box-shadow: none;
    }
    
    .zlcp-preview {
        display: none;
    }
}

/* ========================================
   辅助功能 - 减少动画
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .zlcp-icon,
    .zlcp-container,
    .zlcp-lock-card {
        animation: none;
    }
    
    .zlcp-login-btn:hover {
        transform: none;
    }
}

/* ========================================
   深色模式支持
   ======================================== */

@media (prefers-color-scheme: dark) {
    .zlcp-lock-card {
        background: linear-gradient(135deg, #4c5fd5 0%, #5a3d82 100%);
        box-shadow: 0 10px 40px rgba(76, 95, 213, 0.3);
    }
}

/* ========================================
   登录按钮焦点状态 (辅助功能)
   ======================================== */

.zlcp-login-btn:focus {
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 3px;
}

.zlcp-login-btn:focus:not(:focus-visible) {
    outline: none;
}

.zlcp-login-btn:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 3px;
}