/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* 登录容器 */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.login-container:hover {
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
    font-size: 24px;
    font-weight: 600;
}

/* 表单样式 */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #4CAF50;
    color: white;
    width: 100%;
    margin-bottom: 10px;
}

.btn-primary:hover {
    background-color: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-secondary {
    background-color: #f1f1f1;
    color: #333;
    width: 100%;
}

.btn-secondary:hover {
    background-color: #e0e0e0;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 错误消息 */
.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
    border-left: 4px solid #c62828;
}

/* 导航栏 */
.navbar {
    background-color: #333;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .logo {
    font-size: 18px;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.navbar .nav-links {
    display: flex;
    gap: 20px;
}

.navbar .nav-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    padding: 5px 10px;
    border-radius: 4px;
}

.navbar .nav-links a:hover {
    color: #4CAF50;
    background-color: rgba(255, 255, 255, 0.1);
}

/* 侧边栏 */
.sidebar {
    width: 220px;
    background-color: white;
    height: calc(100vh - 60px);
    position: fixed;
    left: 0;
    top: 60px;
    padding: 20px;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    margin-bottom: 8px;
}

.sidebar ul li a {
    display: block;
    padding: 12px;
    color: #333;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-size: 14px;
}

.sidebar ul li a:hover {
    background-color: #f5f5f5;
    transform: translateX(5px);
}

.sidebar ul li a.active {
    background-color: #4CAF50;
    color: white;
    box-shadow: 0 2px 4px rgba(76, 175, 80, 0.3);
}

/* 主内容区 */
.main-content {
    margin-left: 220px;
    padding: 20px;
    min-height: calc(100vh - 60px);
    background-color: #f5f5f5;
    transition: all 0.3s ease;
}

/* 卡片样式 */
.card {
    background-color: white;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card h3 {
    margin-bottom: 15px;
    color: #333;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 2px solid #4CAF50;
    padding-bottom: 10px;
}

.card h4 {
    margin-bottom: 10px;
    color: #555;
    font-size: 16px;
    font-weight: 500;
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #555;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}

.table tr:hover {
    background-color: #f8f9fa;
}

.table tr:last-child td {
    border-bottom: none;
}

/* 表单容器 */
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #f1f1f1;
    border-radius: 10px;
    overflow: hidden;
    margin: 20px 0;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar .progress {
    height: 100%;
    background-color: #4CAF50;
    border-radius: 10px;
    transition: width 0.3s ease;
    background-image: linear-gradient(90deg, #4CAF50, #45a049);
}

/* 消息提示 */
.message {
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
    border-left: 4px solid;
}

.message.success {
    background-color: #e8f5e8;
    color: #2e7d32;
    border-left-color: #4CAF50;
}

.message.error {
    background-color: #ffebee;
    color: #c62828;
    border-left-color: #c62828;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        top: 0;
        margin-bottom: 20px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .login-container {
        margin: 50px auto;
        padding: 20px;
    }
    
    .navbar .nav-links {
        gap: 10px;
    }
    
    .navbar .nav-links a {
        font-size: 12px;
        padding: 3px 6px;
    }
}

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

.card {
    animation: fadeIn 0.5s ease;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(76, 175, 80, 0.3);
    border-radius: 50%;
    border-top-color: #4CAF50;
    animation: spin 1s ease-in-out infinite;
}

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

/* 页脚 */
.footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
    border-radius: 8px;
    font-size: 14px;
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* 表单提示 */
.form-hint {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: #666;
    font-style: italic;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 5px;
    margin-bottom: 5px;
}

.tag.success {
    background-color: #e8f5e8;
    color: #2e7d32;
}

.tag.error {
    background-color: #ffebee;
    color: #c62828;
}

.tag.info {
    background-color: #e3f2fd;
    color: #1565c0;
}