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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background-color: #fff;
    min-height: 100vh;
}

/* 头部样式 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 15px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
}

/* 搜索区域 */
.search-section {
    padding: 15px;
    background-color: #fff;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 100;
}

.search-box {
    display: flex;
    margin-bottom: 15px;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 25px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input:focus {
    border-color: #667eea;
}

.search-box button {
    padding: 12px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-box button:hover {
    background: #5a6fd8;
}

/* 筛选标签 */
.filter-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.filter-btn {
    padding: 8px 16px;
    background: #f8f9fa;
    border: 1px solid #e1e5e9;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s;
}

.filter-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.filter-btn:hover {
    background: #e8ecf4;
}

/* 招聘信息卡片 */
.jobs-container {
    padding: 15px;
}

.job-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    transition: transform 0.2s, box-shadow 0.2s;
}

.job-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.company-name {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.company-name::before {
    content: "🏢";
    font-size: 16px;
}

.job-title {
    font-size: 16px;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.job-title::before {
    content: "💼";
    font-size: 14px;
}

.job-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 15px;
}

.detail-item {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #666;
    gap: 5px;
}

.detail-item .icon {
    font-size: 12px;
    width: 16px;
    text-align: center;
}

.salary {
    color: #e74c3c;
    font-weight: 600;
}

.requirements {
    background: #f8f9fa;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 12px;
    font-size: 14px;
    line-height: 1.6;
}

.requirements strong {
    color: #2c3e50;
    display: block;
    margin-bottom: 5px;
}

.contact-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
    flex-wrap: wrap;
    gap: 10px;
}

.contact-phones {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.contact-person {
    font-size: 14px;
    color: #666;
}

.contact-phone {
    background: #667eea;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.3s;
    white-space: nowrap;
}

.contact-phone:hover {
    background: #5a6fd8;
}

.company-intro {
    margin-top: 15px;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 8px;
    font-size: 13px;
    color: #666;
    line-height: 1.5;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s;
    z-index: 1000;
    display: none;
}

.back-to-top:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

.back-to-top.show {
    display: block;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

.empty-state .icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #666;
}

.empty-state p {
    font-size: 14px;
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .header h1 {
        font-size: 20px;
    }
    
    .subtitle {
        font-size: 13px;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-box input {
        margin-bottom: 10px;
    }
    
    .job-details {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .contact-phones {
        width: 100%;
        justify-content: flex-start;
    }
    
    .contact-phone {
        flex: 1;
        text-align: center;
        min-width: 0;
    }
}

/* 加载动画 */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.loading::after {
    content: "";
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 隐藏类 */
.hidden {
    display: none !important;
}