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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    margin-top: 50px;
}

h1, h2, h3 {
    margin-bottom: 20px;
    color: #444;
}

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

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

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-text {
    font-size: 12px;
    color: #666;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 16px;
}

.btn:hover {
    background-color: #0069d9;
}

.btn-primary {
    background-color: #007bff;
}

.btn-primary:hover {
    background-color: #0069d9;
}

.btn-danger {
    background-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-warning {
    background-color: #ffc107;
}

.btn-warning:hover {
    background-color: #e0a800;
}

.btn-success {
    background-color: #28a745;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 14px;
}

.btn-link {
    background: none;
    color: #007bff;
    padding: 0;
}

.btn-link:hover {
    text-decoration: underline;
    background: none;
}

/* 提示框 */
.alert {
    padding: 10px 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

/* 管理员后台样式 */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    background-color: #343a40;
    color: #fff;
    padding: 20px;
}

.admin-sidebar h2 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 20px;
}

.admin-sidebar ul {
    list-style: none;
}

.admin-sidebar li {
    margin-bottom: 10px;
}

.admin-sidebar a {
    color: #adb5bd;
    text-decoration: none;
    display: block;
    padding: 5px 0;
}

.admin-sidebar a:hover,
.admin-sidebar li.active a {
    color: #fff;
}

.admin-content {
    flex: 1;
    padding: 20px;
    background-color: #f8f9fa;
}

/* 统计卡片 */
.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    flex: 1;
    min-width: 200px;
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.stat-card h3 {
    font-size: 16px;
    color: #6c757d;
    margin-bottom: 10px;
}

.stat-card p {
    font-size: 24px;
    font-weight: bold;
    color: #007bff;
}

/* 表格样式 */
.user-table,
.whitelist-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

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

.user-table th,
.whitelist-table th {
    background-color: #f8f9fa;
    font-weight: bold;
}

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

.avatar-small {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.text-muted {
    color: #6c757d;
}

/* 表单内联样式 */
.form-inline {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.form-inline .form-group {
    margin-bottom: 0;
}

.form-inline input {
    width: auto;
}