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

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

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

.header {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.nav {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.nav ul {
    list-style: none;
    display: flex;
    padding: 0;
}

.nav li {
    padding: 0;
}

.nav a {
    display: block;
    padding: 15px 25px;
    text-decoration: none;
    color: #666;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.nav a:hover, .nav a.active {
    color: #1890ff;
    border-bottom-color: #1890ff;
}

.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
    transition: background 0.3s;
}

.btn-primary {
    background: #1890ff;
    color: white;
}

.btn-primary:hover {
    background: #40a9ff;
}

.btn-success {
    background: #52c41a;
    color: white;
}

.btn-danger {
    background: #ff4d4f;
    color: white;
}

.btn-warning {
    background: #faad14;
    color: white;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

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

.table th {
    background: #fafafa;
    font-weight: bold;
}

.alert {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.alert-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #a8071a;
}

.alert-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #389e0d;
}

.alert-info {
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #0958d9;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.badge-success {
    background: #f6ffed;
    color: #52c41a;
    border: 1px solid #b7eb8f;
}

.badge-error {
    background: #fff2f0;
    color: #ff4d4f;
    border: 1px solid #ffccc7;
}

.badge-warning {
    background: #fffbe6;
    color: #faad14;
    border: 1px solid #ffe58f;
}