/* 全局样式变量 */
:root {
    --primary-blue: #0052D9;
    --secondary-blue: #1E88E5;
    --light-blue: #E3F2FD;
    --dark-blue: #002F6C;
    --text-dark: #333333;
    --text-light: #FFFFFF;
    --border-color: #CCCCCC;
    --bg-color: #F5F7FA;
    --blue-100: #F0F7FF;
    --blue-50: #F8FAFF;
}

/* 文本颜色类 */
.text-yellow-500 {
    color: #FFD700;
}

.text-red-500 {
    color: #DC3545;
}

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

body {
    font-family: "Microsoft YaHei", "SimSun", "Arial", sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* 导航栏样式 */
#navbar {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

#navbar .navbar-brand {
    padding: 10px 0;
}

#navbar .nav-link {
    color: white;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

#navbar .nav-link:hover,
#navbar .nav-link.active {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

/* 搜索框模块样式 */
#search {
    background-color: var(--blue-100);
    padding: 30px 0;
    border-bottom: 1px solid #ddd;
}

#search .search-tabs .btn {
    margin-right: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
}

#search .search-tabs .btn-primary {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
}

#search .search-tabs .btn-outline-primary {
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

#search .search-tabs .btn-outline-primary:hover {
    background-color: var(--light-blue);
}

#search .search-box {
    margin-top: 10px;
}

#search .search-box input {
    height: 50px;
    font-size: 16px;
    border: 1px solid #ddd;
}

#search .search-box button {
    height: 50px;
    font-size: 16px;
    background-color: var(--primary-blue);
    border: none;
    padding: 0 30px;
}

#search .search-box button:hover {
    background-color: var(--dark-blue);
}

/* 数据统计模块样式 */
#statistics {
    padding: 40px 0;
    background-color: white;
}

#statistics .statistics-container {
    background-color: var(--blue-50);
    border: 1px solid var(--light-blue);
    border-radius: 8px;
}

#statistics h3 {
    color: var(--primary-blue);
    font-size: 20px;
    margin-bottom: 25px;
}

#statistics .stat-box {
    background-color: white;
    border-radius: 6px;
    border: 1px solid #eee;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#statistics .stat-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 82, 217, 0.15);
}

#statistics .stat-number {
    color: var(--primary-blue);
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 8px;
}

#statistics .stat-label {
    color: var(--dark-blue);
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

#statistics .stat-desc {
    color: #666;
    font-size: 14px;
}

/* 各模块通用样式 */
#demand, #achievements, #managers, #news, #trade {
    padding: 40px 0;
}

#achievements, #news {
    background-color: white;
}

#demand, #managers, #trade {
    background-color: var(--bg-color);
}

.section-header {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-blue);
}

.section-header h2 {
    color: var(--dark-blue);
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

.section-header a {
    color: var(--primary-blue);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.section-header a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

/* 卡片通用样式 */
.card {
    border-radius: 6px;
    border: 1px solid #eee;
    transition: all 0.3s ease;
    height: 100%;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 6px 16px rgba(0, 82, 217, 0.15);
    transform: translateY(-3px);
}

.card-header {
    background-color: var(--primary-blue);
    color: white;
    font-weight: bold;
}

.card-body {
    padding: 20px;
}

/* 底部样式 */
#footer {
    background-color: var(--dark-blue);
    color: white;
    padding: 40px 0 20px;
}

#footer h4 {
    color: white;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

#footer p {
    margin-bottom: 10px;
    color: white;
    font-size: 14px;
    opacity: 1;
}

#footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#footer ul li {
    margin-bottom: 10px;
}

#footer ul li a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 1;
    transition: color 0.3s ease;
}

#footer ul li a:hover {
    color: #E3F2FD;
    text-decoration: underline;
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--dark-blue);
    border-color: var(--dark-blue);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 82, 217, 0.2);
}

.btn-outline-primary {
    color: var(--primary-blue);
    border-color: var(--primary-blue);
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn-outline-primary:hover {
    background-color: var(--light-blue);
    color: var(--dark-blue);
    border-color: var(--dark-blue);
}

/* 响应式设计 */
@media (max-width: 768px) {
    #navbar .navbar-brand {
        padding: 8px 0;
    }
    
    #navbar .navbar-brand div:first-child {
        width: 40px;
        height: 40px;
    }
    
    #navbar .navbar-brand span {
        font-size: 20px;
    }
    
    #navbar .navbar-brand .font-bold {
        font-size: 14px;
    }
    
    #search .search-tabs .btn {
        margin-right: 5px;
        font-size: 12px;
        padding: 6px 12px;
    }
    
    #search .search-box input,
    #search .search-box button {
        height: 40px;
        font-size: 14px;
    }
    
    #statistics .stat-number {
        font-size: 28px;
    }
    
    #statistics .stat-label {
        font-size: 14px;
    }
    
    .section-header h2 {
        font-size: 20px;
    }
    
    section {
        padding: 25px 0;
    }
}

@media (max-width: 576px) {
    #statistics .row > div {
        margin-bottom: 15px;
    }
    
    #statistics .row > div:last-child {
        margin-bottom: 0;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start !important;
    }
    
    .section-header a {
        margin-top: 10px;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue);
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

section {
    animation: fadeIn 0.6s ease-out;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--light-blue);
    border-radius: 50%;
    border-top-color: var(--primary-blue);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}