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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* 头部样式 */
header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

header h1 {
    font-size: 1.8rem;
    margin: 0;
}

/* 底部样式 */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: absolute;
    bottom: 0;
    width: 100%;
    font-size: 0.9rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #555;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

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

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

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

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

.btn-warning {
    background-color: #ffc107;
    color: #212529;
}

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

/* 消息提示样式 */
.message {
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
    text-align: center;
}

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

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

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

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

.form-control {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

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

/* 登录页面样式 */
.login-container {
    max-width: 400px;
    margin: 50px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

/* 后台管理页面样式 */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.admin-header h2 {
    margin: 0;
}

/* 统计卡片样式 */
.stats-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.stats-card h3 {
    margin-bottom: 15px;
    color: #333;
}

.stats-grid {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.stat-item {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    flex: 1;
    min-width: 200px;
}

.stat-item strong {
    font-size: 1.2rem;
    color: #007bff;
}

/* 面板样式 */
.panel {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.panel h3 {
    margin-bottom: 15px;
    color: #333;
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.data-table th,
.data-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.data-table th {
    background-color: #f2f2f2;
    font-weight: bold;
    color: #333;
}

.data-table tr:hover {
    background-color: #f5f5f5;
}

/* 编辑页面样式 */
.edit-container {
    max-width: 600px;
    margin: 50px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.edit-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

/* 跳转页面样式 */
.redirect-container {
    text-align: center;
    margin-top: 50px;
    padding: 30px;
}

.redirect-container h2 {
    margin-bottom: 20px;
    color: #333;
}

.redirect-countdown {
    font-size: 1.2rem;
    font-weight: bold;
    color: #007bff;
    margin: 15px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .admin-header {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    
    .stats-grid {
        flex-direction: column;
    }
    
    .data-table {
        font-size: 0.9rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px;
    }
}