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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    min-height: 100vh;
}

/* 标题样式 */
h1 {
    color: #333;
    margin-bottom: 30px;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 2px solid #3498db;
}

h2 {
    color: #555;
    margin: 20px 0 15px;
    font-size: 1.5em;
}

h3 {
    color: #666;
    margin: 15px 0 10px;
    font-size: 1.2em;
}

/* 导航样式 */
.nav {
    margin-bottom: 30px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.nav span {
    font-weight: bold;
    color: #333;
    margin-right: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: #3498db;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    background-color: #2980b9;
}

.btn-primary {
    background-color: #27ae60;
}

.btn-primary:hover {
    background-color: #229954;
}

.btn-success {
    background-color: #27ae60;
}

.btn-success:hover {
    background-color: #229954;
}

.btn-warning {
    background-color: #f39c12;
}

.btn-warning:hover {
    background-color: #e67e22;
}

.btn-danger {
    background-color: #e74c3c;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
}

/* 表单样式 */
.form-container {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

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

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

.form-group input[type="text"],
.form-group input[type="number"],
.form-group textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

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

.form-group input[type="checkbox"] {
    margin-right: 5px;
}

/* 任务列表样式 */
.task-list {
    margin-top: 30px;
}

.task-section {
    margin-bottom: 30px;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

/* 表格样式 */
.task-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

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

.task-table th {
    background-color: #f2f2f2;
    font-weight: bold;
    color: #555;
}

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

.task-table tr.top {
    background-color: #e3f2fd;
}

.task-table tr.priority {
    background-color: #fff3e0;
}

/* 登录链接区域样式 */
.login-links {
    margin: 20px 0;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

.login-links h3 {
    margin-bottom: 15px;
}

/* 信息区域样式 */
.info {
    margin-top: 30px;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

.info ul {
    list-style-type: disc;
    margin-left: 20px;
    margin-top: 10px;
}

.info li {
    margin-bottom: 5px;
}

/* 响应式样式 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .nav {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .task-table {
        font-size: 12px;
    }
    
    .task-table th,
    .task-table td {
        padding: 8px;
    }
}