.todo-box {
    background: linear-gradient(135deg, #fff5f5 0%, #fff9f0 100%);
    border: 2px solid #ffd9d9;
    border-radius: 12px;
    padding: 20px 25px;
    margin-bottom: 25px;
}

.todo-box h5 {
    color: #c53030;
    margin-bottom: 15px;
    font-weight: 600;
}

.todo-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px dashed #ffd9d9;
}

.todo-item:last-child {
    border-bottom: none;
}

.todo-item a {
    color: #4a5568;
    font-weight: 500;
    transition: all 0.2s;
}

.todo-item a:hover {
    color: #667eea;
}

.d-grid {
    display: grid;
}

.gap-2 {
    gap: 10px;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
}

.badge-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.badge-danger {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
}

.badge-warning {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.text-muted {
    color: #868e96 !important;
}

.page-header {
    margin-bottom: 25px;
}

.page-header h2 {
    font-weight: 700;
    color: #495057;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .admin-nav .nav-link {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .admin-header {
        padding: 15px 0;
    }
    
    .admin-header h3 {
        font-size: 18px;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .page-header h2 {
        font-size: 22px;
    }
}

@media (max-width: 576px) {
    .admin-nav .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .admin-nav .nav-item {
        margin: 5px;
    }
    
    .admin-nav .nav-link {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .todo-box {
        padding: 15px;
    }
}