/* 基础样式 */
:root {
    --primary-color: #4a6cf7;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --background-color: #f8f9fa;
    --card-bg-color: #ffffff;
    --text-color: #343a40;
    --border-radius: 12px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --highlight-color: #ff3e3e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* 头部样式 */
header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    padding: 20px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, #4a6cf7 0%, #3a57d5 100%);
    box-shadow: var(--box-shadow);
    color: white;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    display: inline-block;
}

header h1::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 3px;
}

header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    white-space: pre-line; /* 保留换行符 */
    margin: 0 auto;
    max-width: 80%;
    line-height: 1.8;
}

/* 永久网址高亮 */
.permanent-url {
    font-weight: bold;
    color: #ffeb3b;
    font-size: 1.4rem;
    padding: 5px 10px;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    display: inline-block;
    margin: 10px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }
}

/* 过滤按钮 */
.filter-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.filter-btn {
    background-color: var(--card-bg-color);
    border: 1px solid #e0e0e0;
    color: var(--secondary-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.filter-btn:hover {
    background-color: #f0f0f0;
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 卡片容器 */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* 卡片样式 */
.card {
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.card-tag {
    background-color: #e9ecef;
    color: var(--secondary-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.qr-container {
    position: relative;
    align-self: center;
}

.qr-code {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    /* 微信长按识别优化 */
    -webkit-touch-callout: none; /* 禁止iOS弹出菜单 */
}

/* 微信二维码识别提示 */
.qr-code[data-wxqr="wxqr"]::after {
    content: "长按识别二维码";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    text-align: center;
    padding: 5px;
    font-size: 12px;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    opacity: 0;
    transition: opacity 0.3s;
}

.qr-container:hover .qr-code[data-wxqr="wxqr"]::after {
    opacity: 1;
}

.download-btn {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.download-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.card-description {
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.url-container {
    display: flex;
    align-items: center;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.url-input {
    flex: 1;
    padding: 8px 12px;
    border: none;
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: #f8f9fa;
}

.copy-btn {
    background-color: #f8f9fa;
    border: none;
    border-left: 1px solid #e0e0e0;
    padding: 8px 12px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--secondary-color);
}

.copy-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.update-time {
    font-size: 0.85rem;
    color: var(--secondary-color);
}

.visit-btn {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.visit-btn:hover {
    background-color: #3a57d5;
}

/* 没有结果时的样式 */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--secondary-color);
    font-size: 1.2rem;
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* 页脚样式 */
footer {
    margin-top: 50px;
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    header h1 {
        font-size: 2.2rem;
    }
    
    .permanent-url {
        font-size: 1.2rem;
    }
    
    .cards-container {
        grid-template-columns: 1fr;
    }
    
    .card-body {
        flex-direction: column;
    }
    
    .qr-container {
        margin-bottom: 15px;
    }
    
    .qr-code {
        width: 150px;
        height: 150px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeIn 0.5s ease forwards;
}

/* 复制成功提示 */
.copy-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(40, 167, 69, 0.9);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.copy-toast.show {
    opacity: 1;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #121212;
        --card-bg-color: #1e1e1e;
        --text-color: #e0e0e0;
        --secondary-color: #adb5bd;
        --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    
    header {
        background: linear-gradient(135deg, #3a57d5 0%, #2a3f9d 100%);
    }
    
    .filter-btn {
        background-color: #2a2a2a;
        border-color: #333;
    }
    
    .filter-btn:hover {
        background-color: #333;
    }
    
    .card-tag {
        background-color: #2a2a2a;
    }
    
    .url-input {
        background-color: #2a2a2a;
        color: var(--text-color);
    }
    
    .copy-btn {
        background-color: #2a2a2a;
    }
    
    .card-header, .card-footer {
        border-color: #333;
    }
}